/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2016 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2012, 2016 by Delphix. All rights reserved. */ /* * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T. * All Rights Reserved */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */ static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES; #define RFS4_LOCK_DELAY 10 /* Milliseconds */ static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY; extern struct svc_ops rdma_svc_ops; extern int nfs_loaned_buffers; /* End of Tunables */ static int rdma_setup_read_data4(READ4args *, READ4res *); /* * Used to bump the stateid4.seqid value and show changes in the stateid */ #define next_stateid(sp) (++(sp)->bits.chgseq) /* * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent. * This is used to return NFS4ERR_TOOSMALL when clients specify * maxcount that isn't large enough to hold the smallest possible * XDR encoded dirent. * * sizeof cookie (8 bytes) + * sizeof name_len (4 bytes) + * sizeof smallest (padded) name (4 bytes) + * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4 * sizeof attrlist4_len (4 bytes) + * sizeof next boolean (4 bytes) * * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing * the smallest possible entry4 (assumes no attrs requested). * sizeof nfsstat4 (4 bytes) + * sizeof verifier4 (8 bytes) + * sizeof entry4list bool (4 bytes) + * sizeof entry4 (36 bytes) + * sizeof eof bool (4 bytes) * * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to * VOP_READDIR. Its value is the size of the maximum possible dirent * for solaris. The DIRENT64_RECLEN macro returns the size of dirent * required for a given name length. MAXNAMELEN is the maximum * filename length allowed in Solaris. The first two DIRENT64_RECLEN() * macros are to allow for . and .. entries -- just a minor tweak to try * and guarantee that buffer we give to VOP_READDIR will be large enough * to hold ., .., and the largest possible solaris dirent64. */ #define RFS4_MINLEN_ENTRY4 36 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4) #define RFS4_MINLEN_RDDIR_BUF \ (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN)) /* * It would be better to pad to 4 bytes since that's what XDR would do, * but the dirents UFS gives us are already padded to 8, so just take * what we're given. Dircount is only a hint anyway. Currently the * solaris kernel is ASCII only, so there's no point in calling the * UTF8 functions. * * dirent64: named padded to provide 8 byte struct alignment * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad) * * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes * */ #define DIRENT64_TO_DIRCOUNT(dp) \ (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen)) time_t rfs4_start_time; /* Initialized in rfs4_srvrinit */ static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */ u_longlong_t nfs4_srv_caller_id; uint_t nfs4_srv_vkey = 0; verifier4 Write4verf; verifier4 Readdir4verf; void rfs4_init_compound_state(struct compound_state *); static void nullfree(caddr_t); static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_create_free(nfs_resop4 *resop); static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_getattr_free(nfs_resop4 *); static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_getfh_free(nfs_resop4 *); static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void lock_denied_free(nfs_resop4 *); static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs); static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_read_free(nfs_resop4 *); static void rfs4_op_readdir_free(nfs_resop4 *resop); static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_readlink_free(nfs_resop4 *); static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *, struct svc_req *req, struct compound_state *); static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *, struct compound_state *); static void rfs4_op_secinfo_free(nfs_resop4 *); static nfsstat4 check_open_access(uint32_t, struct compound_state *, struct svc_req *); nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *); void rfs4_ss_clid(rfs4_client_t *); /* * translation table for attrs */ struct nfs4_ntov_table { union nfs4_attr_u *na; uint8_t amap[NFS4_MAXNUM_ATTRS]; int attrcnt; bool_t vfsstat; }; static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp); static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, struct nfs4_svgetit_arg *sargp); static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd); fem_t *deleg_rdops; fem_t *deleg_wrops; rfs4_servinst_t *rfs4_cur_servinst = NULL; /* current server instance */ kmutex_t rfs4_servinst_lock; /* protects linked list */ int rfs4_seen_first_compound; /* set first time we see one */ /* * NFS4 op dispatch table */ struct rfsv4disp { void (*dis_proc)(); /* proc to call */ void (*dis_resfree)(); /* frees space allocated by proc */ int dis_flags; /* RPC_IDEMPOTENT, etc... */ }; static struct rfsv4disp rfsv4disptab[] = { /* * NFS VERSION 4 */ /* RFS_NULL = 0 */ {rfs4_op_illegal, nullfree, 0}, /* UNUSED = 1 */ {rfs4_op_illegal, nullfree, 0}, /* UNUSED = 2 */ {rfs4_op_illegal, nullfree, 0}, /* OP_ACCESS = 3 */ {rfs4_op_access, nullfree, RPC_IDEMPOTENT}, /* OP_CLOSE = 4 */ {rfs4_op_close, nullfree, 0}, /* OP_COMMIT = 5 */ {rfs4_op_commit, nullfree, RPC_IDEMPOTENT}, /* OP_CREATE = 6 */ {rfs4_op_create, nullfree, 0}, /* OP_DELEGPURGE = 7 */ {rfs4_op_delegpurge, nullfree, 0}, /* OP_DELEGRETURN = 8 */ {rfs4_op_delegreturn, nullfree, 0}, /* OP_GETATTR = 9 */ {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT}, /* OP_GETFH = 10 */ {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL}, /* OP_LINK = 11 */ {rfs4_op_link, nullfree, 0}, /* OP_LOCK = 12 */ {rfs4_op_lock, lock_denied_free, 0}, /* OP_LOCKT = 13 */ {rfs4_op_lockt, lock_denied_free, 0}, /* OP_LOCKU = 14 */ {rfs4_op_locku, nullfree, 0}, /* OP_LOOKUP = 15 */ {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, /* OP_LOOKUPP = 16 */ {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)}, /* OP_NVERIFY = 17 */ {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT}, /* OP_OPEN = 18 */ {rfs4_op_open, rfs4_free_reply, 0}, /* OP_OPENATTR = 19 */ {rfs4_op_openattr, nullfree, 0}, /* OP_OPEN_CONFIRM = 20 */ {rfs4_op_open_confirm, nullfree, 0}, /* OP_OPEN_DOWNGRADE = 21 */ {rfs4_op_open_downgrade, nullfree, 0}, /* OP_OPEN_PUTFH = 22 */ {rfs4_op_putfh, nullfree, RPC_ALL}, /* OP_PUTPUBFH = 23 */ {rfs4_op_putpubfh, nullfree, RPC_ALL}, /* OP_PUTROOTFH = 24 */ {rfs4_op_putrootfh, nullfree, RPC_ALL}, /* OP_READ = 25 */ {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT}, /* OP_READDIR = 26 */ {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT}, /* OP_READLINK = 27 */ {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT}, /* OP_REMOVE = 28 */ {rfs4_op_remove, nullfree, 0}, /* OP_RENAME = 29 */ {rfs4_op_rename, nullfree, 0}, /* OP_RENEW = 30 */ {rfs4_op_renew, nullfree, 0}, /* OP_RESTOREFH = 31 */ {rfs4_op_restorefh, nullfree, RPC_ALL}, /* OP_SAVEFH = 32 */ {rfs4_op_savefh, nullfree, RPC_ALL}, /* OP_SECINFO = 33 */ {rfs4_op_secinfo, rfs4_op_secinfo_free, 0}, /* OP_SETATTR = 34 */ {rfs4_op_setattr, nullfree, 0}, /* OP_SETCLIENTID = 35 */ {rfs4_op_setclientid, nullfree, 0}, /* OP_SETCLIENTID_CONFIRM = 36 */ {rfs4_op_setclientid_confirm, nullfree, 0}, /* OP_VERIFY = 37 */ {rfs4_op_verify, nullfree, RPC_IDEMPOTENT}, /* OP_WRITE = 38 */ {rfs4_op_write, nullfree, 0}, /* OP_RELEASE_LOCKOWNER = 39 */ {rfs4_op_release_lockowner, nullfree, 0}, }; static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]); #define OP_ILLEGAL_IDX (rfsv4disp_cnt) #ifdef DEBUG int rfs4_fillone_debug = 0; int rfs4_no_stub_access = 1; int rfs4_rddir_debug = 0; static char *rfs4_op_string[] = { "rfs4_op_null", "rfs4_op_1 unused", "rfs4_op_2 unused", "rfs4_op_access", "rfs4_op_close", "rfs4_op_commit", "rfs4_op_create", "rfs4_op_delegpurge", "rfs4_op_delegreturn", "rfs4_op_getattr", "rfs4_op_getfh", "rfs4_op_link", "rfs4_op_lock", "rfs4_op_lockt", "rfs4_op_locku", "rfs4_op_lookup", "rfs4_op_lookupp", "rfs4_op_nverify", "rfs4_op_open", "rfs4_op_openattr", "rfs4_op_open_confirm", "rfs4_op_open_downgrade", "rfs4_op_putfh", "rfs4_op_putpubfh", "rfs4_op_putrootfh", "rfs4_op_read", "rfs4_op_readdir", "rfs4_op_readlink", "rfs4_op_remove", "rfs4_op_rename", "rfs4_op_renew", "rfs4_op_restorefh", "rfs4_op_savefh", "rfs4_op_secinfo", "rfs4_op_setattr", "rfs4_op_setclientid", "rfs4_op_setclient_confirm", "rfs4_op_verify", "rfs4_op_write", "rfs4_op_release_lockowner", "rfs4_op_illegal" }; #endif void rfs4_ss_chkclid(rfs4_client_t *); extern size_t strlcpy(char *dst, const char *src, size_t dstsize); extern void rfs4_free_fs_locations4(fs_locations4 *); #ifdef nextdp #undef nextdp #endif #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen)) static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = { VOPNAME_OPEN, { .femop_open = deleg_rd_open }, VOPNAME_WRITE, { .femop_write = deleg_rd_write }, VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr }, VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock }, VOPNAME_SPACE, { .femop_space = deleg_rd_space }, VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr }, VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent }, NULL, NULL }; static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = { VOPNAME_OPEN, { .femop_open = deleg_wr_open }, VOPNAME_READ, { .femop_read = deleg_wr_read }, VOPNAME_WRITE, { .femop_write = deleg_wr_write }, VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr }, VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock }, VOPNAME_SPACE, { .femop_space = deleg_wr_space }, VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr }, VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent }, NULL, NULL }; int rfs4_srvrinit(void) { timespec32_t verf; int error; extern void rfs4_attr_init(); extern krwlock_t rfs4_deleg_policy_lock; /* * The following algorithm attempts to find a unique verifier * to be used as the write verifier returned from the server * to the client. It is important that this verifier change * whenever the server reboots. Of secondary importance, it * is important for the verifier to be unique between two * different servers. * * Thus, an attempt is made to use the system hostid and the * current time in seconds when the nfssrv kernel module is * loaded. It is assumed that an NFS server will not be able * to boot and then to reboot in less than a second. If the * hostid has not been set, then the current high resolution * time is used. This will ensure different verifiers each * time the server reboots and minimize the chances that two * different servers will have the same verifier. * XXX - this is broken on LP64 kernels. */ verf.tv_sec = (time_t)zone_get_hostid(NULL); if (verf.tv_sec != 0) { verf.tv_nsec = gethrestime_sec(); } else { timespec_t tverf; gethrestime(&tverf); verf.tv_sec = (time_t)tverf.tv_sec; verf.tv_nsec = tverf.tv_nsec; } Write4verf = *(uint64_t *)&verf; rfs4_attr_init(); mutex_init(&rfs4_deleg_lock, NULL, MUTEX_DEFAULT, NULL); /* Used to manage create/destroy of server state */ mutex_init(&rfs4_state_lock, NULL, MUTEX_DEFAULT, NULL); /* Used to manage access to server instance linked list */ mutex_init(&rfs4_servinst_lock, NULL, MUTEX_DEFAULT, NULL); /* Used to manage access to rfs4_deleg_policy */ rw_init(&rfs4_deleg_policy_lock, NULL, RW_DEFAULT, NULL); error = fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops); if (error != 0) { rfs4_disable_delegation(); } else { error = fem_create("deleg_wrops", nfs4_wr_deleg_tmpl, &deleg_wrops); if (error != 0) { rfs4_disable_delegation(); fem_free(deleg_rdops); } } nfs4_srv_caller_id = fs_new_caller_id(); lockt_sysid = lm_alloc_sysidt(); vsd_create(&nfs4_srv_vkey, NULL); return (0); } void rfs4_srvrfini(void) { extern krwlock_t rfs4_deleg_policy_lock; if (lockt_sysid != LM_NOSYSID) { lm_free_sysidt(lockt_sysid); lockt_sysid = LM_NOSYSID; } mutex_destroy(&rfs4_deleg_lock); mutex_destroy(&rfs4_state_lock); rw_destroy(&rfs4_deleg_policy_lock); fem_free(deleg_rdops); fem_free(deleg_wrops); } void rfs4_init_compound_state(struct compound_state *cs) { bzero(cs, sizeof (*cs)); cs->cont = TRUE; cs->access = CS_ACCESS_DENIED; cs->deleg = FALSE; cs->mandlock = FALSE; cs->fh.nfs_fh4_val = cs->fhbuf; } void rfs4_grace_start(rfs4_servinst_t *sip) { rw_enter(&sip->rwlock, RW_WRITER); sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt()); sip->grace_period = rfs4_grace_period; rw_exit(&sip->rwlock); } /* * returns true if the instance's grace period has never been started */ int rfs4_servinst_grace_new(rfs4_servinst_t *sip) { time_t start_time; rw_enter(&sip->rwlock, RW_READER); start_time = sip->start_time; rw_exit(&sip->rwlock); return (start_time == 0); } /* * Indicates if server instance is within the * grace period. */ int rfs4_servinst_in_grace(rfs4_servinst_t *sip) { time_t grace_expiry; rw_enter(&sip->rwlock, RW_READER); grace_expiry = sip->start_time + sip->grace_period; rw_exit(&sip->rwlock); return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry); } int rfs4_clnt_in_grace(rfs4_client_t *cp) { ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); return (rfs4_servinst_in_grace(cp->rc_server_instance)); } /* * reset all currently active grace periods */ void rfs4_grace_reset_all(void) { rfs4_servinst_t *sip; mutex_enter(&rfs4_servinst_lock); for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) if (rfs4_servinst_in_grace(sip)) rfs4_grace_start(sip); mutex_exit(&rfs4_servinst_lock); } /* * start any new instances' grace periods */ void rfs4_grace_start_new(void) { rfs4_servinst_t *sip; mutex_enter(&rfs4_servinst_lock); for (sip = rfs4_cur_servinst; sip != NULL; sip = sip->prev) if (rfs4_servinst_grace_new(sip)) rfs4_grace_start(sip); mutex_exit(&rfs4_servinst_lock); } static rfs4_dss_path_t * rfs4_dss_newpath(rfs4_servinst_t *sip, char *path, unsigned index) { size_t len; rfs4_dss_path_t *dss_path; dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP); /* * Take a copy of the string, since the original may be overwritten. * Sadly, no strdup() in the kernel. */ /* allow for NUL */ len = strlen(path) + 1; dss_path->path = kmem_alloc(len, KM_SLEEP); (void) strlcpy(dss_path->path, path, len); /* associate with servinst */ dss_path->sip = sip; dss_path->index = index; /* * Add to list of served paths. * No locking required, as we're only ever called at startup. */ if (rfs4_dss_pathlist == NULL) { /* this is the first dss_path_t */ /* needed for insque/remque */ dss_path->next = dss_path->prev = dss_path; rfs4_dss_pathlist = dss_path; } else { insque(dss_path, rfs4_dss_pathlist); } return (dss_path); } /* * Create a new server instance, and make it the currently active instance. * Note that starting the grace period too early will reduce the clients' * recovery window. */ void rfs4_servinst_create(int start_grace, int dss_npaths, char **dss_paths) { unsigned i; rfs4_servinst_t *sip; rfs4_oldstate_t *oldstate; sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP); rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL); sip->start_time = (time_t)0; sip->grace_period = (time_t)0; sip->next = NULL; sip->prev = NULL; rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL); /* * This initial dummy entry is required to setup for insque/remque. * It must be skipped over whenever the list is traversed. */ oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP); /* insque/remque require initial list entry to be self-terminated */ oldstate->next = oldstate; oldstate->prev = oldstate; sip->oldstate = oldstate; sip->dss_npaths = dss_npaths; sip->dss_paths = kmem_alloc(dss_npaths * sizeof (rfs4_dss_path_t *), KM_SLEEP); for (i = 0; i < dss_npaths; i++) { sip->dss_paths[i] = rfs4_dss_newpath(sip, dss_paths[i], i); } mutex_enter(&rfs4_servinst_lock); if (rfs4_cur_servinst != NULL) { /* add to linked list */ sip->prev = rfs4_cur_servinst; rfs4_cur_servinst->next = sip; } if (start_grace) rfs4_grace_start(sip); /* make the new instance "current" */ rfs4_cur_servinst = sip; mutex_exit(&rfs4_servinst_lock); } /* * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy * all instances directly. */ void rfs4_servinst_destroy_all(void) { rfs4_servinst_t *sip, *prev, *current; #ifdef DEBUG int n = 0; #endif mutex_enter(&rfs4_servinst_lock); ASSERT(rfs4_cur_servinst != NULL); current = rfs4_cur_servinst; rfs4_cur_servinst = NULL; for (sip = current; sip != NULL; sip = prev) { prev = sip->prev; rw_destroy(&sip->rwlock); if (sip->oldstate) kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t)); if (sip->dss_paths) kmem_free(sip->dss_paths, sip->dss_npaths * sizeof (rfs4_dss_path_t *)); kmem_free(sip, sizeof (rfs4_servinst_t)); #ifdef DEBUG n++; #endif } mutex_exit(&rfs4_servinst_lock); } /* * Assign the current server instance to a client_t. * Should be called with cp->rc_dbe held. */ void rfs4_servinst_assign(rfs4_client_t *cp, rfs4_servinst_t *sip) { ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); /* * The lock ensures that if the current instance is in the process * of changing, we will see the new one. */ mutex_enter(&rfs4_servinst_lock); cp->rc_server_instance = sip; mutex_exit(&rfs4_servinst_lock); } rfs4_servinst_t * rfs4_servinst(rfs4_client_t *cp) { ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0); return (cp->rc_server_instance); } /* ARGSUSED */ static void nullfree(caddr_t resop) { } /* * This is a fall-through for invalid or not implemented (yet) ops */ /* ARGSUSED */ static void rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL; } /* * Check if the security flavor, nfsnum, is in the flavor_list. */ bool_t in_flavor_list(int nfsnum, int *flavor_list, int count) { int i; for (i = 0; i < count; i++) { if (nfsnum == flavor_list[i]) return (TRUE); } return (FALSE); } /* * Used by rfs4_op_secinfo to get the security information from the * export structure associated with the component. */ /* ARGSUSED */ static nfsstat4 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp) { int error, different_export = 0; vnode_t *dvp, *vp; struct exportinfo *exi = NULL; fid_t fid; uint_t count, i; secinfo4 *resok_val; struct secinfo *secp; seconfig_t *si; bool_t did_traverse = FALSE; int dotdot, walk; dvp = cs->vp; dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); /* * If dotdotting, then need to check whether it's above the * root of a filesystem, or above an export point. */ if (dotdot) { /* * If dotdotting at the root of a filesystem, then * need to traverse back to the mounted-on filesystem * and do the dotdot lookup there. */ if (cs->vp->v_flag & VROOT) { /* * If at the system root, then can * go up no further. */ if (VN_CMP(dvp, rootdir)) return (puterrno4(ENOENT)); /* * Traverse back to the mounted-on filesystem */ dvp = untraverse(cs->vp); /* * Set the different_export flag so we remember * to pick up a new exportinfo entry for * this new filesystem. */ different_export = 1; } else { /* * If dotdotting above an export point then set * the different_export to get new export info. */ different_export = nfs_exported(cs->exi, cs->vp); } } /* * Get the vnode for the component "nm". */ error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr, NULL, NULL, NULL); if (error) return (puterrno4(error)); /* * If the vnode is in a pseudo filesystem, or if the security flavor * used in the request is valid but not an explicitly shared flavor, * or the access bit indicates that this is a limited access, * check whether this vnode is visible. */ if (!different_export && (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || cs->access & CS_ACCESS_LIMITED)) { if (! nfs_visible(cs->exi, vp, &different_export)) { VN_RELE(vp); return (puterrno4(ENOENT)); } } /* * If it's a mountpoint, then traverse it. */ if (vn_ismntpt(vp)) { if ((error = traverse(&vp)) != 0) { VN_RELE(vp); return (puterrno4(error)); } /* remember that we had to traverse mountpoint */ did_traverse = TRUE; different_export = 1; } else if (vp->v_vfsp != dvp->v_vfsp) { /* * If vp isn't a mountpoint and the vfs ptrs aren't the same, * then vp is probably an LOFS object. We don't need the * realvp, we just need to know that we might have crossed * a server fs boundary and need to call checkexport4. * (LOFS lookup hides server fs mountpoints, and actually calls * traverse) */ different_export = 1; } /* * Get the export information for it. */ if (different_export) { bzero(&fid, sizeof (fid)); fid.fid_len = MAXFIDSZ; error = vop_fid_pseudo(vp, &fid); if (error) { VN_RELE(vp); return (puterrno4(error)); } if (dotdot) exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); else exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); if (exi == NULL) { if (did_traverse == TRUE) { /* * If this vnode is a mounted-on vnode, * but the mounted-on file system is not * exported, send back the secinfo for * the exported node that the mounted-on * vnode lives in. */ exi = cs->exi; } else { VN_RELE(vp); return (puterrno4(EACCES)); } } } else { exi = cs->exi; } ASSERT(exi != NULL); /* * Create the secinfo result based on the security information * from the exportinfo structure (exi). * * Return all flavors for a pseudo node. * For a real export node, return the flavor that the client * has access with. */ ASSERT(RW_LOCK_HELD(&exported_lock)); if (PSEUDO(exi)) { count = exi->exi_export.ex_seccnt; /* total sec count */ resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP); secp = exi->exi_export.ex_secinfo; for (i = 0; i < count; i++) { si = &secp[i].s_secinfo; resok_val[i].flavor = si->sc_rpcnum; if (resok_val[i].flavor == RPCSEC_GSS) { rpcsec_gss_info *info; info = &resok_val[i].flavor_info; info->qop = si->sc_qop; info->service = (rpc_gss_svc_t)si->sc_service; /* get oid opaque data */ info->oid.sec_oid4_len = si->sc_gss_mech_type->length; info->oid.sec_oid4_val = kmem_alloc( si->sc_gss_mech_type->length, KM_SLEEP); bcopy( si->sc_gss_mech_type->elements, info->oid.sec_oid4_val, info->oid.sec_oid4_len); } } resp->SECINFO4resok_len = count; resp->SECINFO4resok_val = resok_val; } else { int ret_cnt = 0, k = 0; int *flavor_list; count = exi->exi_export.ex_seccnt; /* total sec count */ secp = exi->exi_export.ex_secinfo; flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP); /* find out which flavors to return */ for (i = 0; i < count; i ++) { int access, flavor, perm; flavor = secp[i].s_secinfo.sc_nfsnum; perm = secp[i].s_flags; access = nfsauth4_secinfo_access(exi, cs->req, flavor, perm, cs->basecr); if (! (access & NFSAUTH_DENIED) && ! (access & NFSAUTH_WRONGSEC)) { flavor_list[ret_cnt] = flavor; ret_cnt++; } } /* Create the returning SECINFO value */ resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP); for (i = 0; i < count; i++) { /* * If the flavor is in the flavor list, * fill in resok_val. */ si = &secp[i].s_secinfo; if (in_flavor_list(si->sc_nfsnum, flavor_list, ret_cnt)) { resok_val[k].flavor = si->sc_rpcnum; if (resok_val[k].flavor == RPCSEC_GSS) { rpcsec_gss_info *info; info = &resok_val[k].flavor_info; info->qop = si->sc_qop; info->service = (rpc_gss_svc_t) si->sc_service; /* get oid opaque data */ info->oid.sec_oid4_len = si->sc_gss_mech_type->length; info->oid.sec_oid4_val = kmem_alloc( si->sc_gss_mech_type->length, KM_SLEEP); bcopy(si->sc_gss_mech_type->elements, info->oid.sec_oid4_val, info->oid.sec_oid4_len); } k++; } if (k >= ret_cnt) break; } resp->SECINFO4resok_len = ret_cnt; resp->SECINFO4resok_val = resok_val; kmem_free(flavor_list, count * sizeof (int)); } VN_RELE(vp); return (NFS4_OK); } /* * SECINFO (Operation 33): Obtain required security information on * the component name in the format of (security-mechanism-oid, qop, service) * triplets. */ /* ARGSUSED */ static void rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo; SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; utf8string *utfnm = &args->name; uint_t len; char *nm; struct sockaddr *ca; char *name = NULL; nfsstat4 status = NFS4_OK; DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs, SECINFO4args *, args); /* * Current file handle (cfh) should have been set before getting * into this function. If not, return error. */ if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->vp->v_type != VDIR) { *cs->statusp = resp->status = NFS4ERR_NOTDIR; goto out; } /* * Verify the component name. If failed, error out, but * do not error out if the component name is a "..". * SECINFO will return its parents secinfo data for SECINFO "..". */ status = utf8_dir_verify(utfnm); if (status != NFS4_OK) { if (utfnm->utf8string_len != 2 || utfnm->utf8string_val[0] != '.' || utfnm->utf8string_val[1] != '.') { *cs->statusp = resp->status = status; goto out; } } nm = utf8_to_str(utfnm, &len, NULL); if (nm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } if (len > MAXNAMELEN) { *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; kmem_free(nm, len); goto out; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (name == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; kmem_free(nm, len); goto out; } *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp); if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); out: DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs, SECINFO4res *, resp); } /* * Free SECINFO result. */ /* ARGSUSED */ static void rfs4_op_secinfo_free(nfs_resop4 *resop) { SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo; int count, i; secinfo4 *resok_val; /* If this is not an Ok result, nothing to free. */ if (resp->status != NFS4_OK) { return; } count = resp->SECINFO4resok_len; resok_val = resp->SECINFO4resok_val; for (i = 0; i < count; i++) { if (resok_val[i].flavor == RPCSEC_GSS) { rpcsec_gss_info *info; info = &resok_val[i].flavor_info; kmem_free(info->oid.sec_oid4_val, info->oid.sec_oid4_len); } } kmem_free(resok_val, count * sizeof (secinfo4)); resp->SECINFO4resok_len = 0; resp->SECINFO4resok_val = NULL; } /* ARGSUSED */ static void rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { ACCESS4args *args = &argop->nfs_argop4_u.opaccess; ACCESS4res *resp = &resop->nfs_resop4_u.opaccess; int error; vnode_t *vp; struct vattr va; int checkwriteperm; cred_t *cr = cs->cr; bslabel_t *clabel, *slabel; ts_label_t *tslabel; boolean_t admin_low_client; DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs, ACCESS4args *, args); #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */ if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } #endif if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } ASSERT(cr != NULL); vp = cs->vp; /* * If the file system is exported read only, it is not appropriate * to check write permissions for regular files and directories. * Special files are interpreted by the client, so the underlying * permissions are sent back to the client for interpretation. */ if (rdonly4(req, cs) && (vp->v_type == VREG || vp->v_type == VDIR)) checkwriteperm = 0; else checkwriteperm = 1; /* * XXX * We need the mode so that we can correctly determine access * permissions relative to a mandatory lock file. Access to * mandatory lock files is denied on the server, so it might * as well be reflected to the server during the open. */ va.va_mask = AT_MODE; error = VOP_GETATTR(vp, &va, 0, cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } resp->access = 0; resp->supported = 0; if (is_system_labeled()) { ASSERT(req->rq_label != NULL); clabel = req->rq_label; DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *, "got client label from request(1)", struct svc_req *, req); if (!blequal(&l_admin_low->tsl_label, clabel)) { if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) { *cs->statusp = resp->status = puterrno4(EACCES); goto out; } slabel = label2bslabel(tslabel); DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel, char *, "got server label(1) for vp(2)", bslabel_t *, slabel, vnode_t *, vp); admin_low_client = B_FALSE; } else admin_low_client = B_TRUE; } if (args->access & ACCESS4_READ) { error = VOP_ACCESS(vp, VREAD, 0, cr, NULL); if (!error && !MANDLOCK(vp, va.va_mode) && (!is_system_labeled() || admin_low_client || bldominates(clabel, slabel))) resp->access |= ACCESS4_READ; resp->supported |= ACCESS4_READ; } if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) { error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); if (!error && (!is_system_labeled() || admin_low_client || bldominates(clabel, slabel))) resp->access |= ACCESS4_LOOKUP; resp->supported |= ACCESS4_LOOKUP; } if (checkwriteperm && (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) { error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); if (!error && !MANDLOCK(vp, va.va_mode) && (!is_system_labeled() || admin_low_client || blequal(clabel, slabel))) resp->access |= (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND)); resp->supported |= resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND); } if (checkwriteperm && (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) { error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); if (!error && (!is_system_labeled() || admin_low_client || blequal(clabel, slabel))) resp->access |= ACCESS4_DELETE; resp->supported |= ACCESS4_DELETE; } if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) { error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL); if (!error && !MANDLOCK(vp, va.va_mode) && (!is_system_labeled() || admin_low_client || bldominates(clabel, slabel))) resp->access |= ACCESS4_EXECUTE; resp->supported |= ACCESS4_EXECUTE; } if (is_system_labeled() && !admin_low_client) label_rele(tslabel); *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs, ACCESS4res *, resp); } /* ARGSUSED */ static void rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { COMMIT4args *args = &argop->nfs_argop4_u.opcommit; COMMIT4res *resp = &resop->nfs_resop4_u.opcommit; int error; vnode_t *vp = cs->vp; cred_t *cr = cs->cr; vattr_t va; DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs, COMMIT4args *, args); if (vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } if (args->offset + args->count < args->offset) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } va.va_mask = AT_UID; error = VOP_GETATTR(vp, &va, 0, cr, NULL); /* * If we can't get the attributes, then we can't do the * right access checking. So, we'll fail the request. */ if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } if (rdonly4(req, cs)) { *cs->statusp = resp->status = NFS4ERR_ROFS; goto out; } if (vp->v_type != VREG) { if (vp->v_type == VDIR) resp->status = NFS4ERR_ISDIR; else resp->status = NFS4ERR_INVAL; *cs->statusp = resp->status; goto out; } if (crgetuid(cr) != va.va_uid && (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) { *cs->statusp = resp->status = puterrno4(error); goto out; } error = VOP_FSYNC(vp, FSYNC, cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } *cs->statusp = resp->status = NFS4_OK; resp->writeverf = Write4verf; out: DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs, COMMIT4res *, resp); } /* * rfs4_op_mknod is called from rfs4_op_create after all initial verification * was completed. It does the nfsv4 create for special files. */ /* ARGSUSED */ static vnode_t * do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req, struct compound_state *cs, vattr_t *vap, char *nm) { int error; cred_t *cr = cs->cr; vnode_t *dvp = cs->vp; vnode_t *vp = NULL; int mode; enum vcexcl excl; switch (args->type) { case NF4CHR: case NF4BLK: if (secpolicy_sys_devices(cr) != 0) { *cs->statusp = resp->status = NFS4ERR_PERM; return (NULL); } if (args->type == NF4CHR) vap->va_type = VCHR; else vap->va_type = VBLK; vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1, args->ftype4_u.devdata.specdata2); vap->va_mask |= AT_RDEV; break; case NF4SOCK: vap->va_type = VSOCK; break; case NF4FIFO: vap->va_type = VFIFO; break; default: *cs->statusp = resp->status = NFS4ERR_BADTYPE; return (NULL); } /* * Must specify the mode. */ if (!(vap->va_mask & AT_MODE)) { *cs->statusp = resp->status = NFS4ERR_INVAL; return (NULL); } excl = EXCL; mode = 0; error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); return (NULL); } return (vp); } /* * nfsv4 create is used to create non-regular files. For regular files, * use nfsv4 open. */ /* ARGSUSED */ static void rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { CREATE4args *args = &argop->nfs_argop4_u.opcreate; CREATE4res *resp = &resop->nfs_resop4_u.opcreate; int error; struct vattr bva, iva, iva2, ava, *vap; cred_t *cr = cs->cr; vnode_t *dvp = cs->vp; vnode_t *vp = NULL; vnode_t *realvp; char *nm, *lnm; uint_t len, llen; int syncval = 0; struct nfs4_svgetit_arg sarg; struct nfs4_ntov_table ntov; struct statvfs64 sb; nfsstat4 status; struct sockaddr *ca; char *name = NULL; char *lname = NULL; DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs, CREATE4args *, args); resp->attrset = 0; if (dvp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } /* * If there is an unshared filesystem mounted on this vnode, * do not allow to create an object in this directory. */ if (vn_ismntpt(dvp)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* Verify that type is correct */ switch (args->type) { case NF4LNK: case NF4BLK: case NF4CHR: case NF4SOCK: case NF4FIFO: case NF4DIR: break; default: *cs->statusp = resp->status = NFS4ERR_BADTYPE; goto out; }; if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } if (dvp->v_type != VDIR) { *cs->statusp = resp->status = NFS4ERR_NOTDIR; goto out; } status = utf8_dir_verify(&args->objname); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } if (rdonly4(req, cs)) { *cs->statusp = resp->status = NFS4ERR_ROFS; goto out; } /* * Name of newly created object */ nm = utf8_to_fn(&args->objname, &len, NULL); if (nm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } if (len > MAXNAMELEN) { *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; kmem_free(nm, len); goto out; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (name == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; kmem_free(nm, len); goto out; } resp->attrset = 0; sarg.sbp = &sb; sarg.is_referral = B_FALSE; nfs4_ntov_table_init(&ntov); status = do_rfs4_set_attrs(&resp->attrset, &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); if (sarg.vap->va_mask == 0 && status == NFS4_OK) status = NFS4ERR_INVAL; if (status != NFS4_OK) { *cs->statusp = resp->status = status; if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); nfs4_ntov_table_free(&ntov, &sarg); resp->attrset = 0; goto out; } /* Get "before" change value */ bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE; error = VOP_GETATTR(dvp, &bva, 0, cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); nfs4_ntov_table_free(&ntov, &sarg); resp->attrset = 0; goto out; } NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime) vap = sarg.vap; /* * Set the default initial values for attributes when the parent * directory does not have the VSUID/VSGID bit set and they have * not been specified in createattrs. */ if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) { vap->va_uid = crgetuid(cr); vap->va_mask |= AT_UID; } if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) { vap->va_gid = crgetgid(cr); vap->va_mask |= AT_GID; } vap->va_mask |= AT_TYPE; switch (args->type) { case NF4DIR: vap->va_type = VDIR; if ((vap->va_mask & AT_MODE) == 0) { vap->va_mode = 0700; /* default: owner rwx only */ vap->va_mask |= AT_MODE; } error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL); if (error) break; /* * Get the initial "after" sequence number, if it fails, * set to zero */ iva.va_mask = AT_SEQ; if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) iva.va_seq = 0; break; case NF4LNK: vap->va_type = VLNK; if ((vap->va_mask & AT_MODE) == 0) { vap->va_mode = 0700; /* default: owner rwx only */ vap->va_mask |= AT_MODE; } /* * symlink names must be treated as data */ lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata, &llen, NULL); if (lnm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); nfs4_ntov_table_free(&ntov, &sarg); resp->attrset = 0; goto out; } if (llen > MAXPATHLEN) { *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); kmem_free(lnm, llen); nfs4_ntov_table_free(&ntov, &sarg); resp->attrset = 0; goto out; } lname = nfscmd_convname(ca, cs->exi, lnm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (lname == NULL) { *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); kmem_free(lnm, llen); nfs4_ntov_table_free(&ntov, &sarg); resp->attrset = 0; goto out; } error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0); if (lname != lnm) kmem_free(lname, MAXPATHLEN + 1); kmem_free(lnm, llen); if (error) break; /* * Get the initial "after" sequence number, if it fails, * set to zero */ iva.va_mask = AT_SEQ; if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) iva.va_seq = 0; error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr, NULL, NULL, NULL); if (error) break; /* * va_seq is not safe over VOP calls, check it again * if it has changed zero out iva to force atomic = FALSE. */ iva2.va_mask = AT_SEQ; if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) || iva2.va_seq != iva.va_seq) iva.va_seq = 0; break; default: /* * probably a special file. */ if ((vap->va_mask & AT_MODE) == 0) { vap->va_mode = 0600; /* default: owner rw only */ vap->va_mask |= AT_MODE; } syncval = FNODSYNC; /* * We know this will only generate one VOP call */ vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name); if (vp == NULL) { if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); nfs4_ntov_table_free(&ntov, &sarg); resp->attrset = 0; goto out; } /* * Get the initial "after" sequence number, if it fails, * set to zero */ iva.va_mask = AT_SEQ; if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) iva.va_seq = 0; break; } if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); if (error) { *cs->statusp = resp->status = puterrno4(error); } /* * Force modified data and metadata out to stable storage. */ (void) VOP_FSYNC(dvp, 0, cr, NULL); if (resp->status != NFS4_OK) { if (vp != NULL) VN_RELE(vp); nfs4_ntov_table_free(&ntov, &sarg); resp->attrset = 0; goto out; } /* * Finish setup of cinfo response, "before" value already set. * Get "after" change value, if it fails, simply return the * before value. */ ava.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) { ava.va_ctime = bva.va_ctime; ava.va_seq = 0; } NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime); /* * True verification that object was created with correct * attrs is impossible. The attrs could have been changed * immediately after object creation. If attributes did * not verify, the only recourse for the server is to * destroy the object. Maybe if some attrs (like gid) * are set incorrectly, the object should be destroyed; * however, seems bad as a default policy. Do we really * want to destroy an object over one of the times not * verifying correctly? For these reasons, the server * currently sets bits in attrset for createattrs * that were set; however, no verification is done. * * vmask_to_nmask accounts for vattr bits set on create * [do_rfs4_set_attrs() only sets resp bits for * non-vattr/vfs bits.] * Mask off any bits set by default so as not to return * more attrset bits than were requested in createattrs */ nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset); resp->attrset &= args->createattrs.attrmask; nfs4_ntov_table_free(&ntov, &sarg); error = makefh4(&cs->fh, vp, cs->exi); if (error) { *cs->statusp = resp->status = puterrno4(error); } /* * The cinfo.atomic = TRUE only if we got no errors, we have * non-zero va_seq's, and it has incremented by exactly one * during the creation and it didn't change during the VOP_LOOKUP * or VOP_FSYNC. */ if (!error && bva.va_seq && iva.va_seq && ava.va_seq && iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) resp->cinfo.atomic = TRUE; else resp->cinfo.atomic = FALSE; /* * Force modified metadata out to stable storage. * * if a underlying vp exists, pass it to VOP_FSYNC */ if (VOP_REALVP(vp, &realvp, NULL) == 0) (void) VOP_FSYNC(realvp, syncval, cr, NULL); else (void) VOP_FSYNC(vp, syncval, cr, NULL); if (resp->status != NFS4_OK) { VN_RELE(vp); goto out; } if (cs->vp) VN_RELE(cs->vp); cs->vp = vp; *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs, CREATE4res *, resp); } /*ARGSUSED*/ static void rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs, DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge); rfs4_op_inval(argop, resop, req, cs); DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs, DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge); } /*ARGSUSED*/ static void rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn; DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn; rfs4_deleg_state_t *dsp; nfsstat4 status; DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs, DELEGRETURN4args *, args); status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp); resp->status = *cs->statusp = status; if (status != NFS4_OK) goto out; /* Ensure specified filehandle matches */ if (cs->vp != dsp->rds_finfo->rf_vp) { resp->status = *cs->statusp = NFS4ERR_BAD_STATEID; } else rfs4_return_deleg(dsp, FALSE); rfs4_update_lease(dsp->rds_client); rfs4_deleg_state_rele(dsp); out: DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs, DELEGRETURN4res *, resp); } /* * Check to see if a given "flavor" is an explicitly shared flavor. * The assumption of this routine is the "flavor" is already a valid * flavor in the secinfo list of "exi". * * e.g. * # share -o sec=flavor1 /export * # share -o sec=flavor2 /export/home * * flavor2 is not an explicitly shared flavor for /export, * however it is in the secinfo list for /export thru the * server namespace setup. */ int is_exported_sec(int flavor, struct exportinfo *exi) { int i; struct secinfo *sp; sp = exi->exi_export.ex_secinfo; for (i = 0; i < exi->exi_export.ex_seccnt; i++) { if (flavor == sp[i].s_secinfo.sc_nfsnum || sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) { return (SEC_REF_EXPORTED(&sp[i])); } } /* Should not reach this point based on the assumption */ return (0); } /* * Check if the security flavor used in the request matches what is * required at the export point or at the root pseudo node (exi_root). * * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise. * */ static int secinfo_match_or_authnone(struct compound_state *cs) { int i; struct secinfo *sp; /* * Check cs->nfsflavor (from the request) against * the current export data in cs->exi. */ sp = cs->exi->exi_export.ex_secinfo; for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) { if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum || sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) return (1); } return (0); } /* * Check the access authority for the client and return the correct error. */ nfsstat4 call_checkauth4(struct compound_state *cs, struct svc_req *req) { int authres; /* * First, check if the security flavor used in the request * are among the flavors set in the server namespace. */ if (!secinfo_match_or_authnone(cs)) { *cs->statusp = NFS4ERR_WRONGSEC; return (*cs->statusp); } authres = checkauth4(cs, req); if (authres > 0) { *cs->statusp = NFS4_OK; if (! (cs->access & CS_ACCESS_LIMITED)) cs->access = CS_ACCESS_OK; } else if (authres == 0) { *cs->statusp = NFS4ERR_ACCESS; } else if (authres == -2) { *cs->statusp = NFS4ERR_WRONGSEC; } else { *cs->statusp = NFS4ERR_DELAY; } return (*cs->statusp); } /* * bitmap4_to_attrmask is called by getattr and readdir. * It sets up the vattr mask and determines whether vfsstat call is needed * based on the input bitmap. * Returns nfsv4 status. */ static nfsstat4 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp) { int i; uint_t va_mask; struct statvfs64 *sbp = sargp->sbp; sargp->sbp = NULL; sargp->flag = 0; sargp->rdattr_error = NFS4_OK; sargp->mntdfid_set = FALSE; if (sargp->cs->vp) sargp->xattr = get_fh4_flag(&sargp->cs->fh, FH4_ATTRDIR | FH4_NAMEDATTR); else sargp->xattr = 0; /* * Set rdattr_error_req to true if return error per * failed entry rather than fail the readdir. */ if (breq & FATTR4_RDATTR_ERROR_MASK) sargp->rdattr_error_req = 1; else sargp->rdattr_error_req = 0; /* * generate the va_mask * Handle the easy cases first */ switch (breq) { case NFS4_NTOV_ATTR_MASK: sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK; return (NFS4_OK); case NFS4_FS_ATTR_MASK: sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK; sargp->sbp = sbp; return (NFS4_OK); case NFS4_NTOV_ATTR_CACHE_MASK: sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK; return (NFS4_OK); case FATTR4_LEASE_TIME_MASK: sargp->vap->va_mask = 0; return (NFS4_OK); default: va_mask = 0; for (i = 0; i < nfs4_ntov_map_size; i++) { if ((breq & nfs4_ntov_map[i].fbit) && nfs4_ntov_map[i].vbit) va_mask |= nfs4_ntov_map[i].vbit; } /* * Check is vfsstat is needed */ if (breq & NFS4_FS_ATTR_MASK) sargp->sbp = sbp; sargp->vap->va_mask = va_mask; return (NFS4_OK); } /* NOTREACHED */ } /* * bitmap4_get_sysattrs is called by getattr and readdir. * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs. * Returns nfsv4 status. */ static nfsstat4 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp) { int error; struct compound_state *cs = sargp->cs; vnode_t *vp = cs->vp; if (sargp->sbp != NULL) { if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) { sargp->sbp = NULL; /* to identify error */ return (puterrno4(error)); } } return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr)); } static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp) { ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size, KM_SLEEP); ntovp->attrcnt = 0; ntovp->vfsstat = FALSE; } static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp, struct nfs4_svgetit_arg *sargp) { int i; union nfs4_attr_u *na; uint8_t *amap; /* * XXX Should do the same checks for whether the bit is set */ for (i = 0, na = ntovp->na, amap = ntovp->amap; i < ntovp->attrcnt; i++, na++, amap++) { (void) (*nfs4_ntov_map[*amap].sv_getit)( NFS4ATTR_FREEIT, sargp, na); } if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) { /* * xdr_free for getattr will be done later */ for (i = 0, na = ntovp->na, amap = ntovp->amap; i < ntovp->attrcnt; i++, na++, amap++) { xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na); } } kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size); } /* * do_rfs4_op_getattr gets the system attrs and converts into fattr4. */ static nfsstat4 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp, struct nfs4_svgetit_arg *sargp) { int error = 0; int i, k; struct nfs4_ntov_table ntov; XDR xdr; ulong_t xdr_size; char *xdr_attrs; nfsstat4 status = NFS4_OK; nfsstat4 prev_rdattr_error = sargp->rdattr_error; union nfs4_attr_u *na; uint8_t *amap; sargp->op = NFS4ATTR_GETIT; sargp->flag = 0; fattrp->attrmask = 0; /* if no bits requested, then return empty fattr4 */ if (breq == 0) { fattrp->attrlist4_len = 0; fattrp->attrlist4 = NULL; return (NFS4_OK); } /* * return NFS4ERR_INVAL when client requests write-only attrs */ if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK)) return (NFS4ERR_INVAL); nfs4_ntov_table_init(&ntov); na = ntov.na; amap = ntov.amap; /* * Now loop to get or verify the attrs */ for (i = 0; i < nfs4_ntov_map_size; i++) { if (breq & nfs4_ntov_map[i].fbit) { if ((*nfs4_ntov_map[i].sv_getit)( NFS4ATTR_SUPPORTED, sargp, NULL) == 0) { error = (*nfs4_ntov_map[i].sv_getit)( NFS4ATTR_GETIT, sargp, na); /* * Possible error values: * >0 if sv_getit failed to * get the attr; 0 if succeeded; * <0 if rdattr_error and the * attribute cannot be returned. */ if (error && !(sargp->rdattr_error_req)) goto done; /* * If error then just for entry */ if (error == 0) { fattrp->attrmask |= nfs4_ntov_map[i].fbit; *amap++ = (uint8_t)nfs4_ntov_map[i].nval; na++; (ntov.attrcnt)++; } else if ((error > 0) && (sargp->rdattr_error == NFS4_OK)) { sargp->rdattr_error = puterrno4(error); } error = 0; } } } /* * If rdattr_error was set after the return value for it was assigned, * update it. */ if (prev_rdattr_error != sargp->rdattr_error) { na = ntov.na; amap = ntov.amap; for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { k = *amap; if (k < FATTR4_RDATTR_ERROR) { continue; } if ((k == FATTR4_RDATTR_ERROR) && ((*nfs4_ntov_map[k].sv_getit)( NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) { (void) (*nfs4_ntov_map[k].sv_getit)( NFS4ATTR_GETIT, sargp, na); } break; } } xdr_size = 0; na = ntov.na; amap = ntov.amap; for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na); } fattrp->attrlist4_len = xdr_size; if (xdr_size) { /* freed by rfs4_op_getattr_free() */ fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP); xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE); na = ntov.na; amap = ntov.amap; for (i = 0; i < ntov.attrcnt; i++, na++, amap++) { if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) { DTRACE_PROBE1(nfss__e__getattr4_encfail, int, *amap); status = NFS4ERR_SERVERFAULT; break; } } /* xdrmem_destroy(&xdrs); */ /* NO-OP */ } else { fattrp->attrlist4 = NULL; } done: nfs4_ntov_table_free(&ntov, sargp); if (error != 0) status = puterrno4(error); return (status); } /* ARGSUSED */ static void rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { GETATTR4args *args = &argop->nfs_argop4_u.opgetattr; GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; struct nfs4_svgetit_arg sarg; struct statvfs64 sb; nfsstat4 status; DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs, GETATTR4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } sarg.sbp = &sb; sarg.cs = cs; sarg.is_referral = B_FALSE; status = bitmap4_to_attrmask(args->attr_request, &sarg); if (status == NFS4_OK) { status = bitmap4_get_sysattrs(&sarg); if (status == NFS4_OK) { /* Is this a referral? */ if (vn_is_nfs_reparse(cs->vp, cs->cr)) { /* Older V4 Solaris client sees a link */ if (client_is_downrev(req)) sarg.vap->va_type = VLNK; else sarg.is_referral = B_TRUE; } status = do_rfs4_op_getattr(args->attr_request, &resp->obj_attributes, &sarg); } } *cs->statusp = resp->status = status; out: DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs, GETATTR4res *, resp); } static void rfs4_op_getattr_free(nfs_resop4 *resop) { GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr; nfs4_fattr4_free(&resp->obj_attributes); } /* ARGSUSED */ static void rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* check for reparse point at the share point */ if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) { /* it's all bad */ cs->exi->exi_moved = 1; *cs->statusp = resp->status = NFS4ERR_MOVED; DTRACE_PROBE2(nfs4serv__func__referral__shared__moved, vnode_t *, cs->vp, char *, "rfs4_op_getfh"); return; } /* check for reparse point at vp */ if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) { /* it's not all bad */ *cs->statusp = resp->status = NFS4ERR_MOVED; DTRACE_PROBE2(nfs4serv__func__referral__moved, vnode_t *, cs->vp, char *, "rfs4_op_getfh"); return; } resp->object.nfs_fh4_val = kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP); nfs_fh4_copy(&cs->fh, &resp->object); *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs, GETFH4res *, resp); } static void rfs4_op_getfh_free(nfs_resop4 *resop) { GETFH4res *resp = &resop->nfs_resop4_u.opgetfh; if (resp->status == NFS4_OK && resp->object.nfs_fh4_val != NULL) { kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len); resp->object.nfs_fh4_val = NULL; resp->object.nfs_fh4_len = 0; } } /* * illegal: args: void * res : status (NFS4ERR_OP_ILLEGAL) */ /* ARGSUSED */ static void rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal; resop->resop = OP_ILLEGAL; *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL; } /* * link: args: SAVED_FH: file, CURRENT_FH: target directory * res: status. If success - CURRENT_FH unchanged, return change_info */ /* ARGSUSED */ static void rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { LINK4args *args = &argop->nfs_argop4_u.oplink; LINK4res *resp = &resop->nfs_resop4_u.oplink; int error; vnode_t *vp; vnode_t *dvp; struct vattr bdva, idva, adva; char *nm; uint_t len; struct sockaddr *ca; char *name = NULL; nfsstat4 status; DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs, LINK4args *, args); /* SAVED_FH: source object */ vp = cs->saved_vp; if (vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } /* CURRENT_FH: target directory */ dvp = cs->vp; if (dvp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } /* * If there is a non-shared filesystem mounted on this vnode, * do not allow to link any file in this directory. */ if (vn_ismntpt(dvp)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* Check source object's type validity */ if (vp->v_type == VDIR) { *cs->statusp = resp->status = NFS4ERR_ISDIR; goto out; } /* Check target directory's type */ if (dvp->v_type != VDIR) { *cs->statusp = resp->status = NFS4ERR_NOTDIR; goto out; } if (cs->saved_exi != cs->exi) { *cs->statusp = resp->status = NFS4ERR_XDEV; goto out; } status = utf8_dir_verify(&args->newname); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } nm = utf8_to_fn(&args->newname, &len, NULL); if (nm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } if (len > MAXNAMELEN) { *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; kmem_free(nm, len); goto out; } if (rdonly4(req, cs)) { *cs->statusp = resp->status = NFS4ERR_ROFS; kmem_free(nm, len); goto out; } /* Get "before" change value */ bdva.va_mask = AT_CTIME|AT_SEQ; error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); kmem_free(nm, len); goto out; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (name == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; kmem_free(nm, len); goto out; } NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0); if (nm != name) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); /* * Get the initial "after" sequence number, if it fails, set to zero */ idva.va_mask = AT_SEQ; if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) idva.va_seq = 0; /* * Force modified data and metadata out to stable storage. */ (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } /* * Get "after" change value, if it fails, simply return the * before value. */ adva.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { adva.va_ctime = bdva.va_ctime; adva.va_seq = 0; } NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) /* * The cinfo.atomic = TRUE only if we have * non-zero va_seq's, and it has incremented by exactly one * during the VOP_LINK and it didn't change during the VOP_FSYNC. */ if (bdva.va_seq && idva.va_seq && adva.va_seq && idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) resp->cinfo.atomic = TRUE; else resp->cinfo.atomic = FALSE; *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs, LINK4res *, resp); } /* * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work. */ /* ARGSUSED */ static nfsstat4 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs) { int error; int different_export = 0; vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL; struct exportinfo *exi = NULL, *pre_exi = NULL; nfsstat4 stat; fid_t fid; int attrdir, dotdot, walk; bool_t is_newvp = FALSE; if (cs->vp->v_flag & V_XATTRDIR) { attrdir = 1; ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR)); } else { attrdir = 0; ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR)); } dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0'); /* * If dotdotting, then need to check whether it's * above the root of a filesystem, or above an * export point. */ if (dotdot) { /* * If dotdotting at the root of a filesystem, then * need to traverse back to the mounted-on filesystem * and do the dotdot lookup there. */ if (cs->vp->v_flag & VROOT) { /* * If at the system root, then can * go up no further. */ if (VN_CMP(cs->vp, rootdir)) return (puterrno4(ENOENT)); /* * Traverse back to the mounted-on filesystem */ cs->vp = untraverse(cs->vp); /* * Set the different_export flag so we remember * to pick up a new exportinfo entry for * this new filesystem. */ different_export = 1; } else { /* * If dotdotting above an export point then set * the different_export to get new export info. */ different_export = nfs_exported(cs->exi, cs->vp); } } error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr, NULL, NULL, NULL); if (error) return (puterrno4(error)); /* * If the vnode is in a pseudo filesystem, check whether it is visible. * * XXX if the vnode is a symlink and it is not visible in * a pseudo filesystem, return ENOENT (not following symlink). * V4 client can not mount such symlink. This is a regression * from V2/V3. * * In the same exported filesystem, if the security flavor used * is not an explicitly shared flavor, limit the view to the visible * list entries only. This is not a WRONGSEC case because it's already * checked via PUTROOTFH/PUTPUBFH or PUTFH. */ if (!different_export && (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) || cs->access & CS_ACCESS_LIMITED)) { if (! nfs_visible(cs->exi, vp, &different_export)) { VN_RELE(vp); return (puterrno4(ENOENT)); } } /* * If it's a mountpoint, then traverse it. */ if (vn_ismntpt(vp)) { pre_exi = cs->exi; /* save pre-traversed exportinfo */ pre_tvp = vp; /* save pre-traversed vnode */ /* * hold pre_tvp to counteract rele by traverse. We will * need pre_tvp below if checkexport4 fails */ VN_HOLD(pre_tvp); if ((error = traverse(&vp)) != 0) { VN_RELE(vp); VN_RELE(pre_tvp); return (puterrno4(error)); } different_export = 1; } else if (vp->v_vfsp != cs->vp->v_vfsp) { /* * The vfsp comparison is to handle the case where * a LOFS mount is shared. lo_lookup traverses mount points, * and NFS is unaware of local fs transistions because * v_vfsmountedhere isn't set. For this special LOFS case, * the dir and the obj returned by lookup will have different * vfs ptrs. */ different_export = 1; } if (different_export) { bzero(&fid, sizeof (fid)); fid.fid_len = MAXFIDSZ; error = vop_fid_pseudo(vp, &fid); if (error) { VN_RELE(vp); if (pre_tvp) VN_RELE(pre_tvp); return (puterrno4(error)); } if (dotdot) exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE); else exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp); if (exi == NULL) { if (pre_tvp) { /* * If this vnode is a mounted-on vnode, * but the mounted-on file system is not * exported, send back the filehandle for * the mounted-on vnode, not the root of * the mounted-on file system. */ VN_RELE(vp); vp = pre_tvp; exi = pre_exi; } else { VN_RELE(vp); return (puterrno4(EACCES)); } } else if (pre_tvp) { /* we're done with pre_tvp now. release extra hold */ VN_RELE(pre_tvp); } cs->exi = exi; /* * Now we do a checkauth4. The reason is that * this client/user may not have access to the new * exported file system, and if they do, * the client/user may be mapped to a different uid. * * We start with a new cr, because the checkauth4 done * in the PUT*FH operation over wrote the cred's uid, * gid, etc, and we want the real thing before calling * checkauth4() */ crfree(cs->cr); cs->cr = crdup(cs->basecr); oldvp = cs->vp; cs->vp = vp; is_newvp = TRUE; stat = call_checkauth4(cs, req); if (stat != NFS4_OK) { VN_RELE(cs->vp); cs->vp = oldvp; return (stat); } } /* * After various NFS checks, do a label check on the path * component. The label on this path should either be the * global zone's label or a zone's label. We are only * interested in the zone's label because exported files * in global zone is accessible (though read-only) to * clients. The exportability/visibility check is already * done before reaching this code. */ if (is_system_labeled()) { bslabel_t *clabel; ASSERT(req->rq_label != NULL); clabel = req->rq_label; DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *, "got client label from request(1)", struct svc_req *, req); if (!blequal(&l_admin_low->tsl_label, clabel)) { if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, cs->exi)) { error = EACCES; goto err_out; } } else { /* * We grant access to admin_low label clients * only if the client is trusted, i.e. also * running Solaris Trusted Extension. */ struct sockaddr *ca; int addr_type; void *ipaddr; tsol_tpc_t *tp; ca = (struct sockaddr *)svc_getrpccaller( req->rq_xprt)->buf; if (ca->sa_family == AF_INET) { addr_type = IPV4_VERSION; ipaddr = &((struct sockaddr_in *)ca)->sin_addr; } else if (ca->sa_family == AF_INET6) { addr_type = IPV6_VERSION; ipaddr = &((struct sockaddr_in6 *) ca)->sin6_addr; } tp = find_tpc(ipaddr, addr_type, B_FALSE); if (tp == NULL || tp->tpc_tp.tp_doi != l_admin_low->tsl_doi || tp->tpc_tp.host_type != SUN_CIPSO) { if (tp != NULL) TPC_RELE(tp); error = EACCES; goto err_out; } TPC_RELE(tp); } } error = makefh4(&cs->fh, vp, cs->exi); err_out: if (error) { if (is_newvp) { VN_RELE(cs->vp); cs->vp = oldvp; } else VN_RELE(vp); return (puterrno4(error)); } if (!is_newvp) { if (cs->vp) VN_RELE(cs->vp); cs->vp = vp; } else if (oldvp) VN_RELE(oldvp); /* * if did lookup on attrdir and didn't lookup .., set named * attr fh flag */ if (attrdir && ! dotdot) set_fh4_flag(&cs->fh, FH4_NAMEDATTR); /* Assume false for now, open proc will set this */ cs->mandlock = FALSE; return (NFS4_OK); } /* ARGSUSED */ static void rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { LOOKUP4args *args = &argop->nfs_argop4_u.oplookup; LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup; char *nm; uint_t len; struct sockaddr *ca; char *name = NULL; nfsstat4 status; DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs, LOOKUP4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->vp->v_type == VLNK) { *cs->statusp = resp->status = NFS4ERR_SYMLINK; goto out; } if (cs->vp->v_type != VDIR) { *cs->statusp = resp->status = NFS4ERR_NOTDIR; goto out; } status = utf8_dir_verify(&args->objname); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } nm = utf8_to_str(&args->objname, &len, NULL); if (nm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } if (len > MAXNAMELEN) { *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; kmem_free(nm, len); goto out; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (name == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; kmem_free(nm, len); goto out; } *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs); if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); out: DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs, LOOKUP4res *, resp); } /* ARGSUSED */ static void rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp; DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->vp->v_type != VDIR) { *cs->statusp = resp->status = NFS4ERR_NOTDIR; goto out; } *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs); /* * From NFSV4 Specification, LOOKUPP should not check for * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead. */ if (resp->status == NFS4ERR_WRONGSEC) { *cs->statusp = resp->status = NFS4_OK; } out: DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs, LOOKUPP4res *, resp); } /*ARGSUSED2*/ static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr; OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr; vnode_t *avp = NULL; int lookup_flags = LOOKUP_XATTR, error; int exp_ro = 0; DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs, OPENATTR4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 && !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) { *cs->statusp = resp->status = puterrno4(ENOTSUP); goto out; } /* * If file system supports passing ACE mask to VOP_ACCESS then * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks */ if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS)) error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS, V_ACE_MASK, cs->cr, NULL); else error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) && (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) && (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0)); if (error) { *cs->statusp = resp->status = puterrno4(EACCES); goto out; } /* * The CREATE_XATTR_DIR VOP flag cannot be specified if * the file system is exported read-only -- regardless of * createdir flag. Otherwise the attrdir would be created * (assuming server fs isn't mounted readonly locally). If * VOP_LOOKUP returns ENOENT in this case, the error will * be translated into EROFS. ENOSYS is mapped to ENOTSUP * because specfs has no VOP_LOOKUP op, so the macro would * return ENOSYS. EINVAL is returned by all (current) * Solaris file system implementations when any of their * restrictions are violated (xattr(dir) can't have xattrdir). * Returning NOTSUPP is more appropriate in this case * because the object will never be able to have an attrdir. */ if (args->createdir && ! (exp_ro = rdonly4(req, cs))) lookup_flags |= CREATE_XATTR_DIR; error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr, NULL, NULL, NULL); if (error) { if (error == ENOENT && args->createdir && exp_ro) *cs->statusp = resp->status = puterrno4(EROFS); else if (error == EINVAL || error == ENOSYS) *cs->statusp = resp->status = puterrno4(ENOTSUP); else *cs->statusp = resp->status = puterrno4(error); goto out; } ASSERT(avp->v_flag & V_XATTRDIR); error = makefh4(&cs->fh, avp, cs->exi); if (error) { VN_RELE(avp); *cs->statusp = resp->status = puterrno4(error); goto out; } VN_RELE(cs->vp); cs->vp = avp; /* * There is no requirement for an attrdir fh flag * because the attrdir has a vnode flag to distinguish * it from regular (non-xattr) directories. The * FH4_ATTRDIR flag is set for future sanity checks. */ set_fh4_flag(&cs->fh, FH4_ATTRDIR); *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs, OPENATTR4res *, resp); } static int do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred, caller_context_t *ct) { int error; int i; clock_t delaytime; delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); /* * Don't block on mandatory locks. If this routine returns * EAGAIN, the caller should return NFS4ERR_LOCKED. */ uio->uio_fmode = FNONBLOCK; for (i = 0; i < rfs4_maxlock_tries; i++) { if (direction == FREAD) { (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct); error = VOP_READ(vp, uio, ioflag, cred, ct); VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct); } else { (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct); error = VOP_WRITE(vp, uio, ioflag, cred, ct); VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct); } if (error != EAGAIN) break; if (i < rfs4_maxlock_tries - 1) { delay(delaytime); delaytime *= 2; } } return (error); } /* ARGSUSED */ static void rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { READ4args *args = &argop->nfs_argop4_u.opread; READ4res *resp = &resop->nfs_resop4_u.opread; int error; int verror; vnode_t *vp; struct vattr va; struct iovec iov, *iovp = NULL; int iovcnt; struct uio uio; u_offset_t offset; bool_t *deleg = &cs->deleg; nfsstat4 stat; int in_crit = 0; mblk_t *mp = NULL; int alloc_err = 0; int rdma_used = 0; int loaned_buffers; caller_context_t ct; struct uio *uiop; DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs, READ4args, args); vp = cs->vp; if (vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE, deleg, TRUE, &ct)) != NFS4_OK) { *cs->statusp = resp->status = stat; goto out; } /* * Enter the critical region before calling VOP_RWLOCK * to avoid a deadlock with write requests. */ if (nbl_need_check(vp)) { nbl_start_crit(vp, RW_READER); in_crit = 1; if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0, &ct)) { *cs->statusp = resp->status = NFS4ERR_LOCKED; goto out; } } if (args->wlist) { if (args->count > clist_len(args->wlist)) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } rdma_used = 1; } /* use loaned buffers for TCP */ loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0; va.va_mask = AT_MODE|AT_SIZE|AT_UID; verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); /* * If we can't get the attributes, then we can't do the * right access checking. So, we'll fail the request. */ if (verror) { *cs->statusp = resp->status = puterrno4(verror); goto out; } if (vp->v_type != VREG) { *cs->statusp = resp->status = ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); goto out; } if (crgetuid(cs->cr) != va.va_uid && (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) && (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) { *cs->statusp = resp->status = puterrno4(error); goto out; } if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */ *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } offset = args->offset; if (offset >= va.va_size) { *cs->statusp = resp->status = NFS4_OK; resp->eof = TRUE; resp->data_len = 0; resp->data_val = NULL; resp->mblk = NULL; /* RDMA */ resp->wlist = args->wlist; resp->wlist_len = resp->data_len; *cs->statusp = resp->status = NFS4_OK; if (resp->wlist) clist_zero_len(resp->wlist); goto out; } if (args->count == 0) { *cs->statusp = resp->status = NFS4_OK; resp->eof = FALSE; resp->data_len = 0; resp->data_val = NULL; resp->mblk = NULL; /* RDMA */ resp->wlist = args->wlist; resp->wlist_len = resp->data_len; if (resp->wlist) clist_zero_len(resp->wlist); goto out; } /* * Do not allocate memory more than maximum allowed * transfer size */ if (args->count > rfs4_tsize(req)) args->count = rfs4_tsize(req); if (loaned_buffers) { uiop = (uio_t *)rfs_setup_xuio(vp); ASSERT(uiop != NULL); uiop->uio_segflg = UIO_SYSSPACE; uiop->uio_loffset = args->offset; uiop->uio_resid = args->count; /* Jump to do the read if successful */ if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) { /* * Need to hold the vnode until after VOP_RETZCBUF() * is called. */ VN_HOLD(vp); goto doio_read; } DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int, uiop->uio_loffset, int, uiop->uio_resid); uiop->uio_extflg = 0; /* failure to setup for zero copy */ rfs_free_xuio((void *)uiop); loaned_buffers = 0; } /* * If returning data via RDMA Write, then grab the chunk list. If we * aren't returning READ data w/RDMA_WRITE, then grab a mblk. */ if (rdma_used) { mp = NULL; (void) rdma_get_wchunk(req, &iov, args->wlist); uio.uio_iov = &iov; uio.uio_iovcnt = 1; } else { /* * mp will contain the data to be sent out in the read reply. * It will be freed after the reply has been sent. */ mp = rfs_read_alloc(args->count, &iovp, &iovcnt); ASSERT(mp != NULL); ASSERT(alloc_err == 0); uio.uio_iov = iovp; uio.uio_iovcnt = iovcnt; } uio.uio_segflg = UIO_SYSSPACE; uio.uio_extflg = UIO_COPY_CACHED; uio.uio_loffset = args->offset; uio.uio_resid = args->count; uiop = &uio; doio_read: error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct); va.va_mask = AT_SIZE; verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct); if (error) { if (mp) freemsg(mp); *cs->statusp = resp->status = puterrno4(error); goto out; } /* make mblk using zc buffers */ if (loaned_buffers) { mp = uio_to_mblk(uiop); ASSERT(mp != NULL); } *cs->statusp = resp->status = NFS4_OK; ASSERT(uiop->uio_resid >= 0); resp->data_len = args->count - uiop->uio_resid; if (mp) { resp->data_val = (char *)mp->b_datap->db_base; rfs_rndup_mblks(mp, resp->data_len, loaned_buffers); } else { resp->data_val = (caddr_t)iov.iov_base; } resp->mblk = mp; if (!verror && offset + resp->data_len == va.va_size) resp->eof = TRUE; else resp->eof = FALSE; if (rdma_used) { if (!rdma_setup_read_data4(args, resp)) { *cs->statusp = resp->status = NFS4ERR_INVAL; } } else { resp->wlist = NULL; } out: if (in_crit) nbl_end_crit(vp); if (iovp != NULL) kmem_free(iovp, iovcnt * sizeof (struct iovec)); DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs, READ4res *, resp); } static void rfs4_op_read_free(nfs_resop4 *resop) { READ4res *resp = &resop->nfs_resop4_u.opread; if (resp->status == NFS4_OK && resp->mblk != NULL) { freemsg(resp->mblk); resp->mblk = NULL; resp->data_val = NULL; resp->data_len = 0; } } static void rfs4_op_readdir_free(nfs_resop4 * resop) { READDIR4res *resp = &resop->nfs_resop4_u.opreaddir; if (resp->status == NFS4_OK && resp->mblk != NULL) { freeb(resp->mblk); resp->mblk = NULL; resp->data_len = 0; } } /* ARGSUSED */ static void rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh; int error; vnode_t *vp; struct exportinfo *exi, *sav_exi; nfs_fh4_fmt_t *fh_fmtp; DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs); if (cs->vp) { VN_RELE(cs->vp); cs->vp = NULL; } if (cs->cr) crfree(cs->cr); cs->cr = crdup(cs->basecr); vp = exi_public->exi_vp; if (vp == NULL) { *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; goto out; } error = makefh4(&cs->fh, vp, exi_public); if (error != 0) { *cs->statusp = resp->status = puterrno4(error); goto out; } sav_exi = cs->exi; if (exi_public == exi_root) { /* * No filesystem is actually shared public, so we default * to exi_root. In this case, we must check whether root * is exported. */ fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val; /* * if root filesystem is exported, the exportinfo struct that we * should use is what checkexport4 returns, because root_exi is * actually a mostly empty struct. */ exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, NULL); cs->exi = ((exi != NULL) ? exi : exi_public); } else { /* * it's a properly shared filesystem */ cs->exi = exi_public; } if (is_system_labeled()) { bslabel_t *clabel; ASSERT(req->rq_label != NULL); clabel = req->rq_label; DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *, "got client label from request(1)", struct svc_req *, req); if (!blequal(&l_admin_low->tsl_label, clabel)) { if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK, cs->exi)) { *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; goto out; } } } VN_HOLD(vp); cs->vp = vp; if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { VN_RELE(cs->vp); cs->vp = NULL; cs->exi = sav_exi; goto out; } *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs, PUTPUBFH4res *, resp); } /* * XXX - issue with put*fh operations. Suppose /export/home is exported. * Suppose an NFS client goes to mount /export/home/joe. If /export, home, * or joe have restrictive search permissions, then we shouldn't let * the client get a file handle. This is easy to enforce. However, we * don't know what security flavor should be used until we resolve the * path name. Another complication is uid mapping. If root is * the user, then it will be mapped to the anonymous user by default, * but we won't know that till we've resolved the path name. And we won't * know what the anonymous user is. * Luckily, SECINFO is specified to take a full filename. * So what we will have to in rfs4_op_lookup is check that flavor of * the target object matches that of the request, and if root was the * caller, check for the root= and anon= options, and if necessary, * repeat the lookup using the right cred_t. But that's not done yet. */ /* ARGSUSED */ static void rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { PUTFH4args *args = &argop->nfs_argop4_u.opputfh; PUTFH4res *resp = &resop->nfs_resop4_u.opputfh; nfs_fh4_fmt_t *fh_fmtp; DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs, PUTFH4args *, args); if (cs->vp) { VN_RELE(cs->vp); cs->vp = NULL; } if (cs->cr) { crfree(cs->cr); cs->cr = NULL; } if (args->object.nfs_fh4_len < NFS_FH4_LEN) { *cs->statusp = resp->status = NFS4ERR_BADHANDLE; goto out; } fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val; cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, NULL); if (cs->exi == NULL) { *cs->statusp = resp->status = NFS4ERR_STALE; goto out; } cs->cr = crdup(cs->basecr); ASSERT(cs->cr != NULL); if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) { *cs->statusp = resp->status; goto out; } if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { VN_RELE(cs->vp); cs->vp = NULL; goto out; } nfs_fh4_copy(&args->object, &cs->fh); *cs->statusp = resp->status = NFS4_OK; cs->deleg = FALSE; out: DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs, PUTFH4res *, resp); } /* ARGSUSED */ static void rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh; int error; fid_t fid; struct exportinfo *exi, *sav_exi; DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs); if (cs->vp) { VN_RELE(cs->vp); cs->vp = NULL; } if (cs->cr) crfree(cs->cr); cs->cr = crdup(cs->basecr); /* * Using rootdir, the system root vnode, * get its fid. */ bzero(&fid, sizeof (fid)); fid.fid_len = MAXFIDSZ; error = vop_fid_pseudo(rootdir, &fid); if (error != 0) { *cs->statusp = resp->status = puterrno4(error); goto out; } /* * Then use the root fsid & fid it to find out if it's exported * * If the server root isn't exported directly, then * it should at least be a pseudo export based on * one or more exports further down in the server's * file tree. */ exi = checkexport4(&rootdir->v_vfsp->vfs_fsid, &fid, NULL); if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) { NFS4_DEBUG(rfs4_debug, (CE_WARN, "rfs4_op_putrootfh: export check failure")); *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; goto out; } /* * Now make a filehandle based on the root * export and root vnode. */ error = makefh4(&cs->fh, rootdir, exi); if (error != 0) { *cs->statusp = resp->status = puterrno4(error); goto out; } sav_exi = cs->exi; cs->exi = exi; VN_HOLD(rootdir); cs->vp = rootdir; if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) { VN_RELE(rootdir); cs->vp = NULL; cs->exi = sav_exi; goto out; } *cs->statusp = resp->status = NFS4_OK; cs->deleg = FALSE; out: DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs, PUTROOTFH4res *, resp); } /* * set_rdattr_params sets up the variables used to manage what information * to get for each directory entry. */ static nfsstat4 set_rdattr_params(struct nfs4_svgetit_arg *sargp, bitmap4 attrs, bool_t *need_to_lookup) { uint_t va_mask; nfsstat4 status; bitmap4 objbits; status = bitmap4_to_attrmask(attrs, sargp); if (status != NFS4_OK) { /* * could not even figure attr mask */ return (status); } va_mask = sargp->vap->va_mask; /* * dirent's d_ino is always correct value for mounted_on_fileid. * mntdfid_set is set once here, but mounted_on_fileid is * set in main dirent processing loop for each dirent. * The mntdfid_set is a simple optimization that lets the * server attr code avoid work when caller is readdir. */ sargp->mntdfid_set = TRUE; /* * Lookup entry only if client asked for any of the following: * a) vattr attrs * b) vfs attrs * c) attrs w/per-object scope requested (change, filehandle, etc) * other than mounted_on_fileid (which we can take from dirent) */ objbits = attrs ? attrs & NFS4_VP_ATTR_MASK : 0; if (va_mask || sargp->sbp || (objbits & ~FATTR4_MOUNTED_ON_FILEID_MASK)) *need_to_lookup = TRUE; else *need_to_lookup = FALSE; if (sargp->sbp == NULL) return (NFS4_OK); /* * If filesystem attrs are requested, get them now from the * directory vp, as most entries will have same filesystem. The only * exception are mounted over entries but we handle * those as we go (XXX mounted over detection not yet implemented). */ sargp->vap->va_mask = 0; /* to avoid VOP_GETATTR */ status = bitmap4_get_sysattrs(sargp); sargp->vap->va_mask = va_mask; if ((status != NFS4_OK) && sargp->rdattr_error_req) { /* * Failed to get filesystem attributes. * Return a rdattr_error for each entry, but don't fail. * However, don't get any obj-dependent attrs. */ sargp->rdattr_error = status; /* for rdattr_error */ *need_to_lookup = FALSE; /* * At least get fileid for regular readdir output */ sargp->vap->va_mask &= AT_NODEID; status = NFS4_OK; } return (status); } /* * readlink: args: CURRENT_FH. * res: status. If success - CURRENT_FH unchanged, return linktext. */ /* ARGSUSED */ static void rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; int error; vnode_t *vp; struct iovec iov; struct vattr va; struct uio uio; char *data; struct sockaddr *ca; char *name = NULL; int is_referral; DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs); /* CURRENT_FH: directory */ vp = cs->vp; if (vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* Is it a referral? */ if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) { is_referral = 1; } else { is_referral = 0; if (vp->v_type == VDIR) { *cs->statusp = resp->status = NFS4ERR_ISDIR; goto out; } if (vp->v_type != VLNK) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } } va.va_mask = AT_MODE; error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } if (MANDLOCK(vp, va.va_mode)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP); if (is_referral) { char *s; size_t strsz; /* Get an artificial symlink based on a referral */ s = build_symlink(vp, cs->cr, &strsz); global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++; DTRACE_PROBE2(nfs4serv__func__referral__reflink, vnode_t *, vp, char *, s); if (s == NULL) error = EINVAL; else { error = 0; (void) strlcpy(data, s, MAXPATHLEN + 1); kmem_free(s, strsz); } } else { iov.iov_base = data; iov.iov_len = MAXPATHLEN; uio.uio_iov = &iov; uio.uio_iovcnt = 1; uio.uio_segflg = UIO_SYSSPACE; uio.uio_extflg = UIO_COPY_CACHED; uio.uio_loffset = 0; uio.uio_resid = MAXPATHLEN; error = VOP_READLINK(vp, &uio, cs->cr, NULL); if (!error) *(data + MAXPATHLEN - uio.uio_resid) = '\0'; } if (error) { kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); *cs->statusp = resp->status = puterrno4(error); goto out; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND, MAXPATHLEN + 1); if (name == NULL) { /* * Even though the conversion failed, we return * something. We just don't translate it. */ name = data; } /* * treat link name as data */ (void) str_to_utf8(name, (utf8string *)&resp->link); if (name != data) kmem_free(name, MAXPATHLEN + 1); kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1); *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs, READLINK4res *, resp); } static void rfs4_op_readlink_free(nfs_resop4 *resop) { READLINK4res *resp = &resop->nfs_resop4_u.opreadlink; utf8string *symlink = (utf8string *)&resp->link; if (symlink->utf8string_val) { UTF8STRING_FREE(*symlink) } } /* * release_lockowner: * Release any state associated with the supplied * lockowner. Note if any lo_state is holding locks we will not * rele that lo_state and thus the lockowner will not be destroyed. * A client using lock after the lock owner stateid has been released * will suffer the consequence of NFS4ERR_BAD_STATEID and would have * to reissue the lock with new_lock_owner set to TRUE. * args: lock_owner * res: status */ /* ARGSUSED */ static void rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner; RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner; rfs4_lockowner_t *lo; rfs4_openowner_t *oo; rfs4_state_t *sp; rfs4_lo_state_t *lsp; rfs4_client_t *cp; bool_t create = FALSE; locklist_t *llist; sysid_t sysid; DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *, cs, RELEASE_LOCKOWNER4args *, ap); /* Make sure there is a clientid around for this request */ cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE); if (cp == NULL) { *cs->statusp = resp->status = rfs4_check_clientid(&ap->lock_owner.clientid, 0); goto out; } rfs4_client_rele(cp); lo = rfs4_findlockowner(&ap->lock_owner, &create); if (lo == NULL) { *cs->statusp = resp->status = NFS4_OK; goto out; } ASSERT(lo->rl_client != NULL); /* * Check for EXPIRED client. If so will reap state with in a lease * period or on next set_clientid_confirm step */ if (rfs4_lease_expired(lo->rl_client)) { rfs4_lockowner_rele(lo); *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto out; } /* * If no sysid has been assigned, then no locks exist; just return. */ rfs4_dbe_lock(lo->rl_client->rc_dbe); if (lo->rl_client->rc_sysidt == LM_NOSYSID) { rfs4_lockowner_rele(lo); rfs4_dbe_unlock(lo->rl_client->rc_dbe); goto out; } sysid = lo->rl_client->rc_sysidt; rfs4_dbe_unlock(lo->rl_client->rc_dbe); /* * Mark the lockowner invalid. */ rfs4_dbe_hide(lo->rl_dbe); /* * sysid-pid pair should now not be used since the lockowner is * invalid. If the client were to instantiate the lockowner again * it would be assigned a new pid. Thus we can get the list of * current locks. */ llist = flk_get_active_locks(sysid, lo->rl_pid); /* If we are still holding locks fail */ if (llist != NULL) { *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD; flk_free_locklist(llist); /* * We need to unhide the lockowner so the client can * try it again. The bad thing here is if the client * has a logic error that took it here in the first place * they probably have lost accounting of the locks that it * is holding. So we may have dangling state until the * open owner state is reaped via close. One scenario * that could possibly occur is that the client has * sent the unlock request(s) in separate threads * and has not waited for the replies before sending the * RELEASE_LOCKOWNER request. Presumably, it would expect * and deal appropriately with NFS4ERR_LOCKS_HELD, by * reissuing the request. */ rfs4_dbe_unhide(lo->rl_dbe); rfs4_lockowner_rele(lo); goto out; } /* * For the corresponding client we need to check each open * owner for any opens that have lockowner state associated * with this lockowner. */ rfs4_dbe_lock(lo->rl_client->rc_dbe); for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL; oo = list_next(&lo->rl_client->rc_openownerlist, oo)) { rfs4_dbe_lock(oo->ro_dbe); for (sp = list_head(&oo->ro_statelist); sp != NULL; sp = list_next(&oo->ro_statelist, sp)) { rfs4_dbe_lock(sp->rs_dbe); for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; lsp = list_next(&sp->rs_lostatelist, lsp)) { if (lsp->rls_locker == lo) { rfs4_dbe_lock(lsp->rls_dbe); rfs4_dbe_invalidate(lsp->rls_dbe); rfs4_dbe_unlock(lsp->rls_dbe); } } rfs4_dbe_unlock(sp->rs_dbe); } rfs4_dbe_unlock(oo->ro_dbe); } rfs4_dbe_unlock(lo->rl_client->rc_dbe); rfs4_lockowner_rele(lo); *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *, cs, RELEASE_LOCKOWNER4res *, resp); } /* * short utility function to lookup a file and recall the delegation */ static rfs4_file_t * rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp, int *lkup_error, cred_t *cr) { vnode_t *vp; rfs4_file_t *fp = NULL; bool_t fcreate = FALSE; int error; if (vpp) *vpp = NULL; if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL, NULL)) == 0) { if (vp->v_type == VREG) fp = rfs4_findfile(vp, NULL, &fcreate); if (vpp) *vpp = vp; else VN_RELE(vp); } if (lkup_error) *lkup_error = error; return (fp); } /* * remove: args: CURRENT_FH: directory; name. * res: status. If success - CURRENT_FH unchanged, return change_info * for directory. */ /* ARGSUSED */ static void rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { REMOVE4args *args = &argop->nfs_argop4_u.opremove; REMOVE4res *resp = &resop->nfs_resop4_u.opremove; int error; vnode_t *dvp, *vp; struct vattr bdva, idva, adva; char *nm; uint_t len; rfs4_file_t *fp; int in_crit = 0; bslabel_t *clabel; struct sockaddr *ca; char *name = NULL; nfsstat4 status; DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs, REMOVE4args *, args); /* CURRENT_FH: directory */ dvp = cs->vp; if (dvp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* * If there is an unshared filesystem mounted on this vnode, * Do not allow to remove anything in this directory. */ if (vn_ismntpt(dvp)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } if (dvp->v_type != VDIR) { *cs->statusp = resp->status = NFS4ERR_NOTDIR; goto out; } status = utf8_dir_verify(&args->target); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } /* * Lookup the file so that we can check if it's a directory */ nm = utf8_to_fn(&args->target, &len, NULL); if (nm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } if (len > MAXNAMELEN) { *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; kmem_free(nm, len); goto out; } if (rdonly4(req, cs)) { *cs->statusp = resp->status = NFS4ERR_ROFS; kmem_free(nm, len); goto out; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (name == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; kmem_free(nm, len); goto out; } /* * Lookup the file to determine type and while we are see if * there is a file struct around and check for delegation. * We don't need to acquire va_seq before this lookup, if * it causes an update, cinfo.before will not match, which will * trigger a cache flush even if atomic is TRUE. */ if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) { if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, NULL)) { VN_RELE(vp); rfs4_file_rele(fp); *cs->statusp = resp->status = NFS4ERR_DELAY; if (nm != name) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); goto out; } } /* Didn't find anything to remove */ if (vp == NULL) { *cs->statusp = resp->status = error; if (nm != name) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); goto out; } if (nbl_need_check(vp)) { nbl_start_crit(vp, RW_READER); in_crit = 1; if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) { *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; if (nm != name) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); nbl_end_crit(vp); VN_RELE(vp); if (fp) { rfs4_clear_dont_grant(fp); rfs4_file_rele(fp); } goto out; } } /* check label before allowing removal */ if (is_system_labeled()) { ASSERT(req->rq_label != NULL); clabel = req->rq_label; DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, "got client label from request(1)", struct svc_req *, req); if (!blequal(&l_admin_low->tsl_label, clabel)) { if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK, cs->exi)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); if (in_crit) nbl_end_crit(vp); VN_RELE(vp); if (fp) { rfs4_clear_dont_grant(fp); rfs4_file_rele(fp); } goto out; } } } /* Get dir "before" change value */ bdva.va_mask = AT_CTIME|AT_SEQ; error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); if (nm != name) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); if (in_crit) nbl_end_crit(vp); VN_RELE(vp); if (fp) { rfs4_clear_dont_grant(fp); rfs4_file_rele(fp); } goto out; } NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime) /* Actually do the REMOVE operation */ if (vp->v_type == VDIR) { /* * Can't remove a directory that has a mounted-on filesystem. */ if (vn_ismntpt(vp)) { error = EACCES; } else { /* * System V defines rmdir to return EEXIST, * not ENOTEMPTY, if the directory is not * empty. A System V NFS server needs to map * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to * transmit over the wire. */ if ((error = VOP_RMDIR(dvp, name, rootdir, cs->cr, NULL, 0)) == EEXIST) error = ENOTEMPTY; } } else { if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 && fp != NULL) { struct vattr va; vnode_t *tvp; rfs4_dbe_lock(fp->rf_dbe); tvp = fp->rf_vp; if (tvp) VN_HOLD(tvp); rfs4_dbe_unlock(fp->rf_dbe); if (tvp) { /* * This is va_seq safe because we are not * manipulating dvp. */ va.va_mask = AT_NLINK; if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && va.va_nlink == 0) { /* Remove state on file remove */ if (in_crit) { nbl_end_crit(vp); in_crit = 0; } rfs4_close_all_state(fp); } VN_RELE(tvp); } } } if (in_crit) nbl_end_crit(vp); VN_RELE(vp); if (fp) { rfs4_clear_dont_grant(fp); rfs4_file_rele(fp); } if (nm != name) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } /* * Get the initial "after" sequence number, if it fails, set to zero */ idva.va_mask = AT_SEQ; if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL)) idva.va_seq = 0; /* * Force modified data and metadata out to stable storage. */ (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); /* * Get "after" change value, if it fails, simply return the * before value. */ adva.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) { adva.va_ctime = bdva.va_ctime; adva.va_seq = 0; } NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime) /* * The cinfo.atomic = TRUE only if we have * non-zero va_seq's, and it has incremented by exactly one * during the VOP_REMOVE/RMDIR and it didn't change during * the VOP_FSYNC. */ if (bdva.va_seq && idva.va_seq && adva.va_seq && idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq) resp->cinfo.atomic = TRUE; else resp->cinfo.atomic = FALSE; *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs, REMOVE4res *, resp); } /* * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory, * oldname and newname. * res: status. If success - CURRENT_FH unchanged, return change_info * for both from and target directories. */ /* ARGSUSED */ static void rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { RENAME4args *args = &argop->nfs_argop4_u.oprename; RENAME4res *resp = &resop->nfs_resop4_u.oprename; int error; vnode_t *odvp; vnode_t *ndvp; vnode_t *srcvp, *targvp; struct vattr obdva, oidva, oadva; struct vattr nbdva, nidva, nadva; char *onm, *nnm; uint_t olen, nlen; rfs4_file_t *fp, *sfp; int in_crit_src, in_crit_targ; int fp_rele_grant_hold, sfp_rele_grant_hold; bslabel_t *clabel; struct sockaddr *ca; char *converted_onm = NULL; char *converted_nnm = NULL; nfsstat4 status; DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs, RENAME4args *, args); fp = sfp = NULL; srcvp = targvp = NULL; in_crit_src = in_crit_targ = 0; fp_rele_grant_hold = sfp_rele_grant_hold = 0; /* CURRENT_FH: target directory */ ndvp = cs->vp; if (ndvp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } /* SAVED_FH: from directory */ odvp = cs->saved_vp; if (odvp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* * If there is an unshared filesystem mounted on this vnode, * do not allow to rename objects in this directory. */ if (vn_ismntpt(odvp)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* * If there is an unshared filesystem mounted on this vnode, * do not allow to rename to this directory. */ if (vn_ismntpt(ndvp)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } if (odvp->v_type != VDIR || ndvp->v_type != VDIR) { *cs->statusp = resp->status = NFS4ERR_NOTDIR; goto out; } if (cs->saved_exi != cs->exi) { *cs->statusp = resp->status = NFS4ERR_XDEV; goto out; } status = utf8_dir_verify(&args->oldname); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } status = utf8_dir_verify(&args->newname); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } onm = utf8_to_fn(&args->oldname, &olen, NULL); if (onm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; nlen = MAXPATHLEN + 1; converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND, nlen); if (converted_onm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; kmem_free(onm, olen); goto out; } nnm = utf8_to_fn(&args->newname, &nlen, NULL); if (nnm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; if (onm != converted_onm) kmem_free(converted_onm, MAXPATHLEN + 1); kmem_free(onm, olen); goto out; } converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (converted_nnm == NULL) { *cs->statusp = resp->status = NFS4ERR_INVAL; kmem_free(nnm, nlen); nnm = NULL; if (onm != converted_onm) kmem_free(converted_onm, MAXPATHLEN + 1); kmem_free(onm, olen); goto out; } if (olen > MAXNAMELEN || nlen > MAXNAMELEN) { *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG; kmem_free(onm, olen); kmem_free(nnm, nlen); goto out; } if (rdonly4(req, cs)) { *cs->statusp = resp->status = NFS4ERR_ROFS; if (onm != converted_onm) kmem_free(converted_onm, MAXPATHLEN + 1); kmem_free(onm, olen); if (nnm != converted_nnm) kmem_free(converted_nnm, MAXPATHLEN + 1); kmem_free(nnm, nlen); goto out; } /* check label of the target dir */ if (is_system_labeled()) { ASSERT(req->rq_label != NULL); clabel = req->rq_label; DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *, "got client label from request(1)", struct svc_req *, req); if (!blequal(&l_admin_low->tsl_label, clabel)) { if (!do_rfs_label_check(clabel, ndvp, EQUALITY_CHECK, cs->exi)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto err_out; } } } /* * Is the source a file and have a delegation? * We don't need to acquire va_seq before these lookups, if * it causes an update, cinfo.before will not match, which will * trigger a cache flush even if atomic is TRUE. */ if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp, &error, cs->cr)) { if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE, NULL)) { *cs->statusp = resp->status = NFS4ERR_DELAY; goto err_out; } } if (srcvp == NULL) { *cs->statusp = resp->status = puterrno4(error); if (onm != converted_onm) kmem_free(converted_onm, MAXPATHLEN + 1); kmem_free(onm, olen); if (nnm != converted_nnm) kmem_free(converted_nnm, MAXPATHLEN + 1); kmem_free(nnm, nlen); goto out; } sfp_rele_grant_hold = 1; /* Does the destination exist and a file and have a delegation? */ if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp, NULL, cs->cr)) { if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE, NULL)) { *cs->statusp = resp->status = NFS4ERR_DELAY; goto err_out; } } fp_rele_grant_hold = 1; /* Check for NBMAND lock on both source and target */ if (nbl_need_check(srcvp)) { nbl_start_crit(srcvp, RW_READER); in_crit_src = 1; if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) { *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; goto err_out; } } if (targvp && nbl_need_check(targvp)) { nbl_start_crit(targvp, RW_READER); in_crit_targ = 1; if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) { *cs->statusp = resp->status = NFS4ERR_FILE_OPEN; goto err_out; } } /* Get source "before" change value */ obdva.va_mask = AT_CTIME|AT_SEQ; error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL); if (!error) { nbdva.va_mask = AT_CTIME|AT_SEQ; error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL); } if (error) { *cs->statusp = resp->status = puterrno4(error); goto err_out; } NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime) NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime) if ((error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, cs->cr, NULL, 0)) == 0 && fp != NULL) { struct vattr va; vnode_t *tvp; rfs4_dbe_lock(fp->rf_dbe); tvp = fp->rf_vp; if (tvp) VN_HOLD(tvp); rfs4_dbe_unlock(fp->rf_dbe); if (tvp) { va.va_mask = AT_NLINK; if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) && va.va_nlink == 0) { /* The file is gone and so should the state */ if (in_crit_targ) { nbl_end_crit(targvp); in_crit_targ = 0; } rfs4_close_all_state(fp); } VN_RELE(tvp); } } if (error == 0) vn_renamepath(ndvp, srcvp, nnm, nlen - 1); if (in_crit_src) nbl_end_crit(srcvp); if (srcvp) VN_RELE(srcvp); if (in_crit_targ) nbl_end_crit(targvp); if (targvp) VN_RELE(targvp); if (sfp) { rfs4_clear_dont_grant(sfp); rfs4_file_rele(sfp); } if (fp) { rfs4_clear_dont_grant(fp); rfs4_file_rele(fp); } if (converted_onm != onm) kmem_free(converted_onm, MAXPATHLEN + 1); kmem_free(onm, olen); if (converted_nnm != nnm) kmem_free(converted_nnm, MAXPATHLEN + 1); kmem_free(nnm, nlen); /* * Get the initial "after" sequence number, if it fails, set to zero */ oidva.va_mask = AT_SEQ; if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL)) oidva.va_seq = 0; nidva.va_mask = AT_SEQ; if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL)) nidva.va_seq = 0; /* * Force modified data and metadata out to stable storage. */ (void) VOP_FSYNC(odvp, 0, cs->cr, NULL); (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL); if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } /* * Get "after" change values, if it fails, simply return the * before value. */ oadva.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) { oadva.va_ctime = obdva.va_ctime; oadva.va_seq = 0; } nadva.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) { nadva.va_ctime = nbdva.va_ctime; nadva.va_seq = 0; } NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime) NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime) /* * The cinfo.atomic = TRUE only if we have * non-zero va_seq's, and it has incremented by exactly one * during the VOP_RENAME and it didn't change during the VOP_FSYNC. */ if (obdva.va_seq && oidva.va_seq && oadva.va_seq && oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq) resp->source_cinfo.atomic = TRUE; else resp->source_cinfo.atomic = FALSE; if (nbdva.va_seq && nidva.va_seq && nadva.va_seq && nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq) resp->target_cinfo.atomic = TRUE; else resp->target_cinfo.atomic = FALSE; #ifdef VOLATILE_FH_TEST { extern void add_volrnm_fh(struct exportinfo *, vnode_t *); /* * Add the renamed file handle to the volatile rename list */ if (cs->exi->exi_export.ex_flags & EX_VOLRNM) { /* file handles may expire on rename */ vnode_t *vp; nnm = utf8_to_fn(&args->newname, &nlen, NULL); /* * Already know that nnm will be a valid string */ error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr, NULL, NULL, NULL); kmem_free(nnm, nlen); if (!error) { add_volrnm_fh(cs->exi, vp); VN_RELE(vp); } } } #endif /* VOLATILE_FH_TEST */ *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, RENAME4res *, resp); return; err_out: if (onm != converted_onm) kmem_free(converted_onm, MAXPATHLEN + 1); if (onm != NULL) kmem_free(onm, olen); if (nnm != converted_nnm) kmem_free(converted_nnm, MAXPATHLEN + 1); if (nnm != NULL) kmem_free(nnm, nlen); if (in_crit_src) nbl_end_crit(srcvp); if (in_crit_targ) nbl_end_crit(targvp); if (targvp) VN_RELE(targvp); if (srcvp) VN_RELE(srcvp); if (sfp) { if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp); rfs4_file_rele(sfp); } if (fp) { if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp); rfs4_file_rele(fp); } DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs, RENAME4res *, resp); } /* ARGSUSED */ static void rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { RENEW4args *args = &argop->nfs_argop4_u.oprenew; RENEW4res *resp = &resop->nfs_resop4_u.oprenew; rfs4_client_t *cp; DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs, RENEW4args *, args); if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) { *cs->statusp = resp->status = rfs4_check_clientid(&args->clientid, 0); goto out; } if (rfs4_lease_expired(cp)) { rfs4_client_rele(cp); *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto out; } rfs4_update_lease(cp); mutex_enter(cp->rc_cbinfo.cb_lock); if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) { cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE; *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN; } else { *cs->statusp = resp->status = NFS4_OK; } mutex_exit(cp->rc_cbinfo.cb_lock); rfs4_client_rele(cp); out: DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs, RENEW4res *, resp); } /* ARGSUSED */ static void rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh; DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs); /* No need to check cs->access - we are not accessing any object */ if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) { *cs->statusp = resp->status = NFS4ERR_RESTOREFH; goto out; } if (cs->vp != NULL) { VN_RELE(cs->vp); } cs->vp = cs->saved_vp; cs->saved_vp = NULL; cs->exi = cs->saved_exi; nfs_fh4_copy(&cs->saved_fh, &cs->fh); *cs->statusp = resp->status = NFS4_OK; cs->deleg = FALSE; out: DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs, RESTOREFH4res *, resp); } /* ARGSUSED */ static void rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh; DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs); /* No need to check cs->access - we are not accessing any object */ if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->saved_vp != NULL) { VN_RELE(cs->saved_vp); } cs->saved_vp = cs->vp; VN_HOLD(cs->saved_vp); cs->saved_exi = cs->exi; /* * since SAVEFH is fairly rare, don't alloc space for its fh * unless necessary. */ if (cs->saved_fh.nfs_fh4_val == NULL) { cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP); } nfs_fh4_copy(&cs->fh, &cs->saved_fh); *cs->statusp = resp->status = NFS4_OK; out: DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs, SAVEFH4res *, resp); } /* * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to * return the bitmap of attrs that were set successfully. It is also * called by Verify/Nverify to test the vattr/vfsstat attrs. It should * always be called only after rfs4_do_set_attrs(). * * Verify that the attributes are same as the expected ones. sargp->vap * and sargp->sbp contain the input attributes as translated from fattr4. * * This function verifies only the attrs that correspond to a vattr or * vfsstat struct. That is because of the extra step needed to get the * corresponding system structs. Other attributes have already been set or * verified by do_rfs4_set_attrs. * * Return 0 if all attrs match, -1 if some don't, error if error processing. */ static int rfs4_verify_attr(struct nfs4_svgetit_arg *sargp, bitmap4 *resp, struct nfs4_ntov_table *ntovp) { int error, ret_error = 0; int i, k; uint_t sva_mask = sargp->vap->va_mask; uint_t vbit; union nfs4_attr_u *na; uint8_t *amap; bool_t getsb = ntovp->vfsstat; if (sva_mask != 0) { /* * Okay to overwrite sargp->vap because we verify based * on the incoming values. */ ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0, sargp->cs->cr, NULL); if (ret_error) { if (resp == NULL) return (ret_error); /* * Must return bitmap of successful attrs */ sva_mask = 0; /* to prevent checking vap later */ } else { /* * Some file systems clobber va_mask. it is probably * wrong of them to do so, nonethless we practice * defensive coding. * See bug id 4276830. */ sargp->vap->va_mask = sva_mask; } } if (getsb) { /* * Now get the superblock and loop on the bitmap, as there is * no simple way of translating from superblock to bitmap4. */ ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp); if (ret_error) { if (resp == NULL) goto errout; getsb = FALSE; } } /* * Now loop and verify each attribute which getattr returned * whether it's the same as the input. */ if (resp == NULL && !getsb && (sva_mask == 0)) goto errout; na = ntovp->na; amap = ntovp->amap; k = 0; for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) { k = *amap; ASSERT(nfs4_ntov_map[k].nval == k); vbit = nfs4_ntov_map[k].vbit; /* * If vattr attribute but VOP_GETATTR failed, or it's * superblock attribute but VFS_STATVFS failed, skip */ if (vbit) { if ((vbit & sva_mask) == 0) continue; } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) { continue; } error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na); if (resp != NULL) { if (error) ret_error = -1; /* not all match */ else /* update response bitmap */ *resp |= nfs4_ntov_map[k].fbit; continue; } if (error) { ret_error = -1; /* not all match */ break; } } errout: return (ret_error); } /* * Decode the attribute to be set/verified. If the attr requires a sys op * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't * call the sv_getit function for it, because the sys op hasn't yet been done. * Return 0 for success, error code if failed. * * Note: the decoded arg is not freed here but in nfs4_ntov_table_free. */ static int decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp, int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap) { int error = 0; bool_t set_later; sargp->vap->va_mask |= nfs4_ntov_map[k].vbit; if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) { set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat; /* * don't verify yet if a vattr or sb dependent attr, * because we don't have their sys values yet. * Will be done later. */ if (! (set_later && (cmd == NFS4ATTR_VERIT))) { /* * ACLs are a special case, since setting the MODE * conflicts with setting the ACL. We delay setting * the ACL until all other attributes have been set. * The ACL gets set in do_rfs4_op_setattr(). */ if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) { error = (*nfs4_ntov_map[k].sv_getit)(cmd, sargp, nap); if (error) { xdr_free(nfs4_ntov_map[k].xfunc, (caddr_t)nap); } } } } else { #ifdef DEBUG cmn_err(CE_NOTE, "decode_fattr4_attr: error " "decoding attribute %d\n", k); #endif error = EINVAL; } if (!error && resp_bval && !set_later) { *resp_bval |= nfs4_ntov_map[k].fbit; } return (error); } /* * Set vattr based on incoming fattr4 attrs - used by setattr. * Set response mask. Ignore any values that are not writable vattr attrs. */ static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd) { int error = 0; int i; char *attrs = fattrp->attrlist4; uint32_t attrslen = fattrp->attrlist4_len; XDR xdr; nfsstat4 status = NFS4_OK; vnode_t *vp = cs->vp; union nfs4_attr_u *na; uint8_t *amap; #ifndef lint /* * Make sure that maximum attribute number can be expressed as an * 8 bit quantity. */ ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1)); #endif if (vp == NULL) { if (resp) *resp = 0; return (NFS4ERR_NOFILEHANDLE); } if (cs->access == CS_ACCESS_DENIED) { if (resp) *resp = 0; return (NFS4ERR_ACCESS); } sargp->op = cmd; sargp->cs = cs; sargp->flag = 0; /* may be set later */ sargp->vap->va_mask = 0; sargp->rdattr_error = NFS4_OK; sargp->rdattr_error_req = FALSE; /* sargp->sbp is set by the caller */ xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE); na = ntovp->na; amap = ntovp->amap; /* * The following loop iterates on the nfs4_ntov_map checking * if the fbit is set in the requested bitmap. * If set then we process the arguments using the * rfs4_fattr4 conversion functions to populate the setattr * vattr and va_mask. Any settable attrs that are not using vattr * will be set in this loop. */ for (i = 0; i < nfs4_ntov_map_size; i++) { if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) { continue; } /* * If setattr, must be a writable attr. * If verify/nverify, must be a readable attr. */ if ((error = (*nfs4_ntov_map[i].sv_getit)( NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) { /* * Client tries to set/verify an * unsupported attribute, tries to set * a read only attr or verify a write * only one - error! */ break; } /* * Decode the attribute to set/verify */ error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval, &xdr, resp ? resp : NULL, na); if (error) break; *amap++ = (uint8_t)nfs4_ntov_map[i].nval; na++; (ntovp->attrcnt)++; if (nfs4_ntov_map[i].vfsstat) ntovp->vfsstat = TRUE; } if (error != 0) status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP : puterrno4(error)); /* xdrmem_destroy(&xdrs); */ /* NO-OP */ return (status); } static nfsstat4 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs, stateid4 *stateid) { int error = 0; struct nfs4_svgetit_arg sarg; bool_t trunc; nfsstat4 status = NFS4_OK; cred_t *cr = cs->cr; vnode_t *vp = cs->vp; struct nfs4_ntov_table ntov; struct statvfs64 sb; struct vattr bva; struct flock64 bf; int in_crit = 0; uint_t saved_mask = 0; caller_context_t ct; *resp = 0; sarg.sbp = &sb; sarg.is_referral = B_FALSE; nfs4_ntov_table_init(&ntov); status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov, NFS4ATTR_SETIT); if (status != NFS4_OK) { /* * failed set attrs */ goto done; } if ((sarg.vap->va_mask == 0) && (! (fattrp->attrmask & FATTR4_ACL_MASK))) { /* * no further work to be done */ goto done; } /* * If we got a request to set the ACL and the MODE, only * allow changing VSUID, VSGID, and VSVTX. Attempting * to change any other bits, along with setting an ACL, * gives NFS4ERR_INVAL. */ if ((fattrp->attrmask & FATTR4_ACL_MASK) && (fattrp->attrmask & FATTR4_MODE_MASK)) { vattr_t va; va.va_mask = AT_MODE; error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL); if (error) { status = puterrno4(error); goto done; } if ((sarg.vap->va_mode ^ va.va_mode) & ~(VSUID | VSGID | VSVTX)) { status = NFS4ERR_INVAL; goto done; } } /* Check stateid only if size has been set */ if (sarg.vap->va_mask & AT_SIZE) { trunc = (sarg.vap->va_size == 0); status = rfs4_check_stateid(FWRITE, cs->vp, stateid, trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct); if (status != NFS4_OK) goto done; } else { ct.cc_sysid = 0; ct.cc_pid = 0; ct.cc_caller_id = nfs4_srv_caller_id; ct.cc_flags = CC_DONTBLOCK; } /* XXX start of possible race with delegations */ /* * We need to specially handle size changes because it is * possible for the client to create a file with read-only * modes, but with the file opened for writing. If the client * then tries to set the file size, e.g. ftruncate(3C), * fcntl(F_FREESP), the normal access checking done in * VOP_SETATTR would prevent the client from doing it even though * it should be allowed to do so. To get around this, we do the * access checking for ourselves and use VOP_SPACE which doesn't * do the access checking. * Also the client should not be allowed to change the file * size if there is a conflicting non-blocking mandatory lock in * the region of the change. */ if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) { u_offset_t offset; ssize_t length; /* * ufs_setattr clears AT_SIZE from vap->va_mask, but * before returning, sarg.vap->va_mask is used to * generate the setattr reply bitmap. We also clear * AT_SIZE below before calling VOP_SPACE. For both * of these cases, the va_mask needs to be saved here * and restored after calling VOP_SETATTR. */ saved_mask = sarg.vap->va_mask; /* * Check any possible conflict due to NBMAND locks. * Get into critical region before VOP_GETATTR, so the * size attribute is valid when checking conflicts. */ if (nbl_need_check(vp)) { nbl_start_crit(vp, RW_READER); in_crit = 1; } bva.va_mask = AT_UID|AT_SIZE; if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) { status = puterrno4(error); goto done; } if (in_crit) { if (sarg.vap->va_size < bva.va_size) { offset = sarg.vap->va_size; length = bva.va_size - sarg.vap->va_size; } else { offset = bva.va_size; length = sarg.vap->va_size - bva.va_size; } if (nbl_conflict(vp, NBL_WRITE, offset, length, 0, &ct)) { status = NFS4ERR_LOCKED; goto done; } } if (crgetuid(cr) == bva.va_uid) { sarg.vap->va_mask &= ~AT_SIZE; bf.l_type = F_WRLCK; bf.l_whence = 0; bf.l_start = (off64_t)sarg.vap->va_size; bf.l_len = 0; bf.l_sysid = 0; bf.l_pid = 0; error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE, (offset_t)sarg.vap->va_size, cr, &ct); } } if (!error && sarg.vap->va_mask != 0) error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct); /* restore va_mask -- ufs_setattr clears AT_SIZE */ if (saved_mask & AT_SIZE) sarg.vap->va_mask |= AT_SIZE; /* * If an ACL was being set, it has been delayed until now, * in order to set the mode (via the VOP_SETATTR() above) first. */ if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) { int i; for (i = 0; i < NFS4_MAXNUM_ATTRS; i++) if (ntov.amap[i] == FATTR4_ACL) break; if (i < NFS4_MAXNUM_ATTRS) { error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)( NFS4ATTR_SETIT, &sarg, &ntov.na[i]); if (error == 0) { *resp |= FATTR4_ACL_MASK; } else if (error == ENOTSUP) { (void) rfs4_verify_attr(&sarg, resp, &ntov); status = NFS4ERR_ATTRNOTSUPP; goto done; } } else { NFS4_DEBUG(rfs4_debug, (CE_NOTE, "do_rfs4_op_setattr: " "unable to find ACL in fattr4")); error = EINVAL; } } if (error) { /* check if a monitor detected a delegation conflict */ if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) status = NFS4ERR_DELAY; else status = puterrno4(error); /* * Set the response bitmap when setattr failed. * If VOP_SETATTR partially succeeded, test by doing a * VOP_GETATTR on the object and comparing the data * to the setattr arguments. */ (void) rfs4_verify_attr(&sarg, resp, &ntov); } else { /* * Force modified metadata out to stable storage. */ (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct); /* * Set response bitmap */ nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp); } /* Return early and already have a NFSv4 error */ done: /* * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr * conversion sets both readable and writeable NFS4 attrs * for AT_MTIME and AT_ATIME. The line below masks out * unrequested attrs from the setattr result bitmap. This * is placed after the done: label to catch the ATTRNOTSUP * case. */ *resp &= fattrp->attrmask; if (in_crit) nbl_end_crit(vp); nfs4_ntov_table_free(&ntov, &sarg); return (status); } /* ARGSUSED */ static void rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { SETATTR4args *args = &argop->nfs_argop4_u.opsetattr; SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr; bslabel_t *clabel; DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs, SETATTR4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } /* * If there is an unshared filesystem mounted on this vnode, * do not allow to setattr on this vnode. */ if (vn_ismntpt(cs->vp)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } resp->attrsset = 0; if (rdonly4(req, cs)) { *cs->statusp = resp->status = NFS4ERR_ROFS; goto out; } /* check label before setting attributes */ if (is_system_labeled()) { ASSERT(req->rq_label != NULL); clabel = req->rq_label; DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *, "got client label from request(1)", struct svc_req *, req); if (!blequal(&l_admin_low->tsl_label, clabel)) { if (!do_rfs_label_check(clabel, cs->vp, EQUALITY_CHECK, cs->exi)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } } } *cs->statusp = resp->status = do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs, &args->stateid); out: DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs, SETATTR4res *, resp); } /* ARGSUSED */ static void rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { /* * verify and nverify are exactly the same, except that nverify * succeeds when some argument changed, and verify succeeds when * when none changed. */ VERIFY4args *args = &argop->nfs_argop4_u.opverify; VERIFY4res *resp = &resop->nfs_resop4_u.opverify; int error; struct nfs4_svgetit_arg sarg; struct statvfs64 sb; struct nfs4_ntov_table ntov; DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs, VERIFY4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } sarg.sbp = &sb; sarg.is_referral = B_FALSE; nfs4_ntov_table_init(&ntov); resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, &sarg, &ntov, NFS4ATTR_VERIT); if (resp->status != NFS4_OK) { /* * do_rfs4_set_attrs will try to verify systemwide attrs, * so could return -1 for "no match". */ if (resp->status == -1) resp->status = NFS4ERR_NOT_SAME; goto done; } error = rfs4_verify_attr(&sarg, NULL, &ntov); switch (error) { case 0: resp->status = NFS4_OK; break; case -1: resp->status = NFS4ERR_NOT_SAME; break; default: resp->status = puterrno4(error); break; } done: *cs->statusp = resp->status; nfs4_ntov_table_free(&ntov, &sarg); out: DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs, VERIFY4res *, resp); } /* ARGSUSED */ static void rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { /* * verify and nverify are exactly the same, except that nverify * succeeds when some argument changed, and verify succeeds when * when none changed. */ NVERIFY4args *args = &argop->nfs_argop4_u.opnverify; NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify; int error; struct nfs4_svgetit_arg sarg; struct statvfs64 sb; struct nfs4_ntov_table ntov; DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs, NVERIFY4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, NVERIFY4res *, resp); return; } sarg.sbp = &sb; sarg.is_referral = B_FALSE; nfs4_ntov_table_init(&ntov); resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs, &sarg, &ntov, NFS4ATTR_VERIT); if (resp->status != NFS4_OK) { /* * do_rfs4_set_attrs will try to verify systemwide attrs, * so could return -1 for "no match". */ if (resp->status == -1) resp->status = NFS4_OK; goto done; } error = rfs4_verify_attr(&sarg, NULL, &ntov); switch (error) { case 0: resp->status = NFS4ERR_SAME; break; case -1: resp->status = NFS4_OK; break; default: resp->status = puterrno4(error); break; } done: *cs->statusp = resp->status; nfs4_ntov_table_free(&ntov, &sarg); DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs, NVERIFY4res *, resp); } /* * XXX - This should live in an NFS header file. */ #define MAX_IOVECS 12 /* ARGSUSED */ static void rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { WRITE4args *args = &argop->nfs_argop4_u.opwrite; WRITE4res *resp = &resop->nfs_resop4_u.opwrite; int error; vnode_t *vp; struct vattr bva; u_offset_t rlimit; struct uio uio; struct iovec iov[MAX_IOVECS]; struct iovec *iovp; int iovcnt; int ioflag; cred_t *savecred, *cr; bool_t *deleg = &cs->deleg; nfsstat4 stat; int in_crit = 0; caller_context_t ct; DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs, WRITE4args *, args); vp = cs->vp; if (vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->access == CS_ACCESS_DENIED) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } cr = cs->cr; if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE, deleg, TRUE, &ct)) != NFS4_OK) { *cs->statusp = resp->status = stat; goto out; } /* * We have to enter the critical region before calling VOP_RWLOCK * to avoid a deadlock with ufs. */ if (nbl_need_check(vp)) { nbl_start_crit(vp, RW_READER); in_crit = 1; if (nbl_conflict(vp, NBL_WRITE, args->offset, args->data_len, 0, &ct)) { *cs->statusp = resp->status = NFS4ERR_LOCKED; goto out; } } bva.va_mask = AT_MODE | AT_UID; error = VOP_GETATTR(vp, &bva, 0, cr, &ct); /* * If we can't get the attributes, then we can't do the * right access checking. So, we'll fail the request. */ if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } if (rdonly4(req, cs)) { *cs->statusp = resp->status = NFS4ERR_ROFS; goto out; } if (vp->v_type != VREG) { *cs->statusp = resp->status = ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL); goto out; } if (crgetuid(cr) != bva.va_uid && (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) { *cs->statusp = resp->status = puterrno4(error); goto out; } if (MANDLOCK(vp, bva.va_mode)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } if (args->data_len == 0) { *cs->statusp = resp->status = NFS4_OK; resp->count = 0; resp->committed = args->stable; resp->writeverf = Write4verf; goto out; } if (args->mblk != NULL) { mblk_t *m; uint_t bytes, round_len; iovcnt = 0; bytes = 0; round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT); for (m = args->mblk; m != NULL && bytes < round_len; m = m->b_cont) { iovcnt++; bytes += MBLKL(m); } #ifdef DEBUG /* should have ended on an mblk boundary */ if (bytes != round_len) { printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n", bytes, round_len, args->data_len); printf("args=%p, args->mblk=%p, m=%p", (void *)args, (void *)args->mblk, (void *)m); ASSERT(bytes == round_len); } #endif if (iovcnt <= MAX_IOVECS) { iovp = iov; } else { iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP); } mblk_to_iov(args->mblk, iovcnt, iovp); } else if (args->rlist != NULL) { iovcnt = 1; iovp = iov; iovp->iov_base = (char *)((args->rlist)->u.c_daddr3); iovp->iov_len = args->data_len; } else { iovcnt = 1; iovp = iov; iovp->iov_base = args->data_val; iovp->iov_len = args->data_len; } uio.uio_iov = iovp; uio.uio_iovcnt = iovcnt; uio.uio_segflg = UIO_SYSSPACE; uio.uio_extflg = UIO_COPY_DEFAULT; uio.uio_loffset = args->offset; uio.uio_resid = args->data_len; uio.uio_llimit = curproc->p_fsz_ctl; rlimit = uio.uio_llimit - args->offset; if (rlimit < (u_offset_t)uio.uio_resid) uio.uio_resid = (int)rlimit; if (args->stable == UNSTABLE4) ioflag = 0; else if (args->stable == FILE_SYNC4) ioflag = FSYNC; else if (args->stable == DATA_SYNC4) ioflag = FDSYNC; else { if (iovp != iov) kmem_free(iovp, sizeof (*iovp) * iovcnt); *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } /* * We're changing creds because VM may fault and we need * the cred of the current thread to be used if quota * checking is enabled. */ savecred = curthread->t_cred; curthread->t_cred = cr; error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct); curthread->t_cred = savecred; if (iovp != iov) kmem_free(iovp, sizeof (*iovp) * iovcnt); if (error) { *cs->statusp = resp->status = puterrno4(error); goto out; } *cs->statusp = resp->status = NFS4_OK; resp->count = args->data_len - uio.uio_resid; if (ioflag == 0) resp->committed = UNSTABLE4; else resp->committed = FILE_SYNC4; resp->writeverf = Write4verf; out: if (in_crit) nbl_end_crit(vp); DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs, WRITE4res *, resp); } /* XXX put in a header file */ extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *); void rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi, struct svc_req *req, cred_t *cr, int *rv) { uint_t i; struct compound_state cs; if (rv != NULL) *rv = 0; rfs4_init_compound_state(&cs); /* * Form a reply tag by copying over the reqeuest tag. */ resp->tag.utf8string_val = kmem_alloc(args->tag.utf8string_len, KM_SLEEP); resp->tag.utf8string_len = args->tag.utf8string_len; bcopy(args->tag.utf8string_val, resp->tag.utf8string_val, resp->tag.utf8string_len); cs.statusp = &resp->status; cs.req = req; resp->array = NULL; resp->array_len = 0; /* * XXX for now, minorversion should be zero */ if (args->minorversion != NFS4_MINORVERSION) { DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, COMPOUND4args *, args); resp->status = NFS4ERR_MINOR_VERS_MISMATCH; DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, COMPOUND4res *, resp); return; } if (args->array_len == 0) { resp->status = NFS4_OK; return; } ASSERT(exi == NULL); ASSERT(cr == NULL); cr = crget(); ASSERT(cr != NULL); if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) { DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, COMPOUND4args *, args); crfree(cr); DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, COMPOUND4res *, resp); svcerr_badcred(req->rq_xprt); if (rv != NULL) *rv = 1; return; } resp->array_len = args->array_len; resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4), KM_SLEEP); cs.basecr = cr; DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs, COMPOUND4args *, args); /* * For now, NFS4 compound processing must be protected by * exported_lock because it can access more than one exportinfo * per compound and share/unshare can now change multiple * exinfo structs. The NFS2/3 code only refs 1 exportinfo * per proc (excluding public exinfo), and exi_count design * is sufficient to protect concurrent execution of NFS2/3 * ops along with unexport. This lock will be removed as * part of the NFSv4 phase 2 namespace redesign work. */ rw_enter(&exported_lock, RW_READER); /* * If this is the first compound we've seen, we need to start all * new instances' grace periods. */ if (rfs4_seen_first_compound == 0) { rfs4_grace_start_new(); /* * This must be set after rfs4_grace_start_new(), otherwise * another thread could proceed past here before the former * is finished. */ rfs4_seen_first_compound = 1; } for (i = 0; i < args->array_len && cs.cont; i++) { nfs_argop4 *argop; nfs_resop4 *resop; uint_t op; argop = &args->array[i]; resop = &resp->array[i]; resop->resop = argop->argop; op = (uint_t)resop->resop; if (op < rfsv4disp_cnt) { /* * Count the individual ops here; NULL and COMPOUND * are counted in common_dispatch() */ rfsproccnt_v4_ptr[op].value.ui64++; NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "Executing %s", rfs4_op_string[op])); (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs); NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d", rfs4_op_string[op], *cs.statusp)); if (*cs.statusp != NFS4_OK) cs.cont = FALSE; } else { /* * This is effectively dead code since XDR code * will have already returned BADXDR if op doesn't * decode to legal value. This only done for a * day when XDR code doesn't verify v4 opcodes. */ op = OP_ILLEGAL; rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++; rfs4_op_illegal(argop, resop, req, &cs); cs.cont = FALSE; } /* * If not at last op, and if we are to stop, then * compact the results array. */ if ((i + 1) < args->array_len && !cs.cont) { nfs_resop4 *new_res = kmem_alloc( (i+1) * sizeof (nfs_resop4), KM_SLEEP); bcopy(resp->array, new_res, (i+1) * sizeof (nfs_resop4)); kmem_free(resp->array, args->array_len * sizeof (nfs_resop4)); resp->array_len = i + 1; resp->array = new_res; } } rw_exit(&exported_lock); DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs, COMPOUND4res *, resp); if (cs.vp) VN_RELE(cs.vp); if (cs.saved_vp) VN_RELE(cs.saved_vp); if (cs.saved_fh.nfs_fh4_val) kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE); if (cs.basecr) crfree(cs.basecr); if (cs.cr) crfree(cs.cr); /* * done with this compound request, free the label */ if (req->rq_label != NULL) { kmem_free(req->rq_label, sizeof (bslabel_t)); req->rq_label = NULL; } } /* * XXX because of what appears to be duplicate calls to rfs4_compound_free * XXX zero out the tag and array values. Need to investigate why the * XXX calls occur, but at least prevent the panic for now. */ void rfs4_compound_free(COMPOUND4res *resp) { uint_t i; if (resp->tag.utf8string_val) { UTF8STRING_FREE(resp->tag) } for (i = 0; i < resp->array_len; i++) { nfs_resop4 *resop; uint_t op; resop = &resp->array[i]; op = (uint_t)resop->resop; if (op < rfsv4disp_cnt) { (*rfsv4disptab[op].dis_resfree)(resop); } } if (resp->array != NULL) { kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4)); } } /* * Process the value of the compound request rpc flags, as a bit-AND * of the individual per-op flags (idempotent, allowork, publicfh_ok) */ void rfs4_compound_flagproc(COMPOUND4args *args, int *flagp) { int i; int flag = RPC_ALL; for (i = 0; flag && i < args->array_len; i++) { uint_t op; op = (uint_t)args->array[i].argop; if (op < rfsv4disp_cnt) flag &= rfsv4disptab[op].dis_flags; else flag = 0; } *flagp = flag; } nfsstat4 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp) { nfsstat4 e; rfs4_dbe_lock(cp->rc_dbe); if (cp->rc_sysidt != LM_NOSYSID) { *sp = cp->rc_sysidt; e = NFS4_OK; } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) { *sp = cp->rc_sysidt; e = NFS4_OK; NFS4_DEBUG(rfs4_debug, (CE_NOTE, "rfs4_client_sysid: allocated 0x%x\n", *sp)); } else e = NFS4ERR_DELAY; rfs4_dbe_unlock(cp->rc_dbe); return (e); } #if defined(DEBUG) && ! defined(lint) static void lock_print(char *str, int operation, struct flock64 *flk) { char *op, *type; switch (operation) { case F_GETLK: op = "F_GETLK"; break; case F_SETLK: op = "F_SETLK"; break; case F_SETLK_NBMAND: op = "F_SETLK_NBMAND"; break; default: op = "F_UNKNOWN"; break; } switch (flk->l_type) { case F_UNLCK: type = "F_UNLCK"; break; case F_RDLCK: type = "F_RDLCK"; break; case F_WRLCK: type = "F_WRLCK"; break; default: type = "F_UNKNOWN"; break; } ASSERT(flk->l_whence == 0); cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d", str, op, type, (longlong_t)flk->l_start, flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid); } #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f) #else #define LOCK_PRINT(d, s, t, f) #endif /*ARGSUSED*/ static bool_t creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs) { return (TRUE); } /* * Look up the pathname using the vp in cs as the directory vnode. * cs->vp will be the vnode for the file on success */ static nfsstat4 rfs4_lookup(component4 *component, struct svc_req *req, struct compound_state *cs) { char *nm; uint32_t len; nfsstat4 status; struct sockaddr *ca; char *name; if (cs->vp == NULL) { return (NFS4ERR_NOFILEHANDLE); } if (cs->vp->v_type != VDIR) { return (NFS4ERR_NOTDIR); } status = utf8_dir_verify(component); if (status != NFS4_OK) return (status); nm = utf8_to_fn(component, &len, NULL); if (nm == NULL) { return (NFS4ERR_INVAL); } if (len > MAXNAMELEN) { kmem_free(nm, len); return (NFS4ERR_NAMETOOLONG); } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (name == NULL) { kmem_free(nm, len); return (NFS4ERR_INVAL); } status = do_rfs4_op_lookup(name, req, cs); if (name != nm) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, len); return (status); } static nfsstat4 rfs4_lookupfile(component4 *component, struct svc_req *req, struct compound_state *cs, uint32_t access, change_info4 *cinfo) { nfsstat4 status; vnode_t *dvp = cs->vp; vattr_t bva, ava, fva; int error; /* Get "before" change value */ bva.va_mask = AT_CTIME|AT_SEQ; error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); if (error) return (puterrno4(error)); /* rfs4_lookup may VN_RELE directory */ VN_HOLD(dvp); status = rfs4_lookup(component, req, cs); if (status != NFS4_OK) { VN_RELE(dvp); return (status); } /* * Get "after" change value, if it fails, simply return the * before value. */ ava.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { ava.va_ctime = bva.va_ctime; ava.va_seq = 0; } VN_RELE(dvp); /* * Validate the file is a file */ fva.va_mask = AT_TYPE|AT_MODE; error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL); if (error) return (puterrno4(error)); if (fva.va_type != VREG) { if (fva.va_type == VDIR) return (NFS4ERR_ISDIR); if (fva.va_type == VLNK) return (NFS4ERR_SYMLINK); return (NFS4ERR_INVAL); } NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime); NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); /* * It is undefined if VOP_LOOKUP will change va_seq, so * cinfo.atomic = TRUE only if we have * non-zero va_seq's, and they have not changed. */ if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq) cinfo->atomic = TRUE; else cinfo->atomic = FALSE; /* Check for mandatory locking */ cs->mandlock = MANDLOCK(cs->vp, fva.va_mode); return (check_open_access(access, cs, req)); } static nfsstat4 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode, cred_t *cr, vnode_t **vpp, bool_t *created) { int error; nfsstat4 status = NFS4_OK; vattr_t va; tryagain: /* * The file open mode used is VWRITE. If the client needs * some other semantic, then it should do the access checking * itself. It would have been nice to have the file open mode * passed as part of the arguments. */ *created = TRUE; error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL); if (error) { *created = FALSE; /* * If we got something other than file already exists * then just return this error. Otherwise, we got * EEXIST. If we were doing a GUARDED create, then * just return this error. Otherwise, we need to * make sure that this wasn't a duplicate of an * exclusive create request. * * The assumption is made that a non-exclusive create * request will never return EEXIST. */ if (error != EEXIST || mode == GUARDED4) { status = puterrno4(error); return (status); } error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr, NULL, NULL, NULL); if (error) { /* * We couldn't find the file that we thought that * we just created. So, we'll just try creating * it again. */ if (error == ENOENT) goto tryagain; status = puterrno4(error); return (status); } if (mode == UNCHECKED4) { /* existing object must be regular file */ if ((*vpp)->v_type != VREG) { if ((*vpp)->v_type == VDIR) status = NFS4ERR_ISDIR; else if ((*vpp)->v_type == VLNK) status = NFS4ERR_SYMLINK; else status = NFS4ERR_INVAL; VN_RELE(*vpp); return (status); } return (NFS4_OK); } /* Check for duplicate request */ va.va_mask = AT_MTIME; error = VOP_GETATTR(*vpp, &va, 0, cr, NULL); if (!error) { /* We found the file */ const timestruc_t *mtime = &vap->va_mtime; if (va.va_mtime.tv_sec != mtime->tv_sec || va.va_mtime.tv_nsec != mtime->tv_nsec) { /* but its not our creation */ VN_RELE(*vpp); return (NFS4ERR_EXIST); } *created = TRUE; /* retrans of create == created */ return (NFS4_OK); } VN_RELE(*vpp); return (NFS4ERR_EXIST); } return (NFS4_OK); } static nfsstat4 check_open_access(uint32_t access, struct compound_state *cs, struct svc_req *req) { int error; vnode_t *vp; bool_t readonly; cred_t *cr = cs->cr; /* For now we don't allow mandatory locking as per V2/V3 */ if (cs->access == CS_ACCESS_DENIED || cs->mandlock) { return (NFS4ERR_ACCESS); } vp = cs->vp; ASSERT(cr != NULL && vp->v_type == VREG); /* * If the file system is exported read only and we are trying * to open for write, then return NFS4ERR_ROFS */ readonly = rdonly4(req, cs); if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly) return (NFS4ERR_ROFS); if (access & OPEN4_SHARE_ACCESS_READ) { if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) && (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) { return (NFS4ERR_ACCESS); } } if (access & OPEN4_SHARE_ACCESS_WRITE) { error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL); if (error) return (NFS4ERR_ACCESS); } return (NFS4_OK); } static nfsstat4 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs, change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid) { struct nfs4_svgetit_arg sarg; struct nfs4_ntov_table ntov; bool_t ntov_table_init = FALSE; struct statvfs64 sb; nfsstat4 status; vnode_t *vp; vattr_t bva, ava, iva, cva, *vap; vnode_t *dvp; timespec32_t *mtime; char *nm = NULL; uint_t buflen; bool_t created; bool_t setsize = FALSE; len_t reqsize; int error; bool_t trunc; caller_context_t ct; component4 *component; bslabel_t *clabel; struct sockaddr *ca; char *name = NULL; sarg.sbp = &sb; sarg.is_referral = B_FALSE; dvp = cs->vp; /* Check if the file system is read only */ if (rdonly4(req, cs)) return (NFS4ERR_ROFS); /* check the label of including directory */ if (is_system_labeled()) { ASSERT(req->rq_label != NULL); clabel = req->rq_label; DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *, "got client label from request(1)", struct svc_req *, req); if (!blequal(&l_admin_low->tsl_label, clabel)) { if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK, cs->exi)) { return (NFS4ERR_ACCESS); } } } /* * Get the last component of path name in nm. cs will reference * the including directory on success. */ component = &args->open_claim4_u.file; status = utf8_dir_verify(component); if (status != NFS4_OK) return (status); nm = utf8_to_fn(component, &buflen, NULL); if (nm == NULL) return (NFS4ERR_RESOURCE); if (buflen > MAXNAMELEN) { kmem_free(nm, buflen); return (NFS4ERR_NAMETOOLONG); } bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ; error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL); if (error) { kmem_free(nm, buflen); return (puterrno4(error)); } if (bva.va_type != VDIR) { kmem_free(nm, buflen); return (NFS4ERR_NOTDIR); } NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime) switch (args->mode) { case GUARDED4: /*FALLTHROUGH*/ case UNCHECKED4: nfs4_ntov_table_init(&ntov); ntov_table_init = TRUE; *attrset = 0; status = do_rfs4_set_attrs(attrset, &args->createhow4_u.createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT); if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) && sarg.vap->va_type != VREG) { if (sarg.vap->va_type == VDIR) status = NFS4ERR_ISDIR; else if (sarg.vap->va_type == VLNK) status = NFS4ERR_SYMLINK; else status = NFS4ERR_INVAL; } if (status != NFS4_OK) { kmem_free(nm, buflen); nfs4_ntov_table_free(&ntov, &sarg); *attrset = 0; return (status); } vap = sarg.vap; vap->va_type = VREG; vap->va_mask |= AT_TYPE; if ((vap->va_mask & AT_MODE) == 0) { vap->va_mask |= AT_MODE; vap->va_mode = (mode_t)0600; } if (vap->va_mask & AT_SIZE) { /* Disallow create with a non-zero size */ if ((reqsize = sarg.vap->va_size) != 0) { kmem_free(nm, buflen); nfs4_ntov_table_free(&ntov, &sarg); *attrset = 0; return (NFS4ERR_INVAL); } setsize = TRUE; } break; case EXCLUSIVE4: /* prohibit EXCL create of named attributes */ if (dvp->v_flag & V_XATTRDIR) { kmem_free(nm, buflen); *attrset = 0; return (NFS4ERR_INVAL); } cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE; cva.va_type = VREG; /* * Ensure no time overflows. Assumes underlying * filesystem supports at least 32 bits. * Truncate nsec to usec resolution to allow valid * compares even if the underlying filesystem truncates. */ mtime = (timespec32_t *)&args->createhow4_u.createverf; cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX; cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000; cva.va_mode = (mode_t)0; vap = &cva; /* * For EXCL create, attrset is set to the server attr * used to cache the client's verifier. */ *attrset = FATTR4_TIME_MODIFY_MASK; break; } ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND, MAXPATHLEN + 1); if (name == NULL) { kmem_free(nm, buflen); return (NFS4ERR_SERVERFAULT); } status = create_vnode(dvp, name, vap, args->mode, cs->cr, &vp, &created); if (nm != name) kmem_free(name, MAXPATHLEN + 1); kmem_free(nm, buflen); if (status != NFS4_OK) { if (ntov_table_init) nfs4_ntov_table_free(&ntov, &sarg); *attrset = 0; return (status); } trunc = (setsize && !created); if (args->mode != EXCLUSIVE4) { bitmap4 createmask = args->createhow4_u.createattrs.attrmask; /* * True verification that object was created with correct * attrs is impossible. The attrs could have been changed * immediately after object creation. If attributes did * not verify, the only recourse for the server is to * destroy the object. Maybe if some attrs (like gid) * are set incorrectly, the object should be destroyed; * however, seems bad as a default policy. Do we really * want to destroy an object over one of the times not * verifying correctly? For these reasons, the server * currently sets bits in attrset for createattrs * that were set; however, no verification is done. * * vmask_to_nmask accounts for vattr bits set on create * [do_rfs4_set_attrs() only sets resp bits for * non-vattr/vfs bits.] * Mask off any bits we set by default so as not to return * more attrset bits than were requested in createattrs */ if (created) { nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset); *attrset &= createmask; } else { /* * We did not create the vnode (we tried but it * already existed). In this case, the only createattr * that the spec allows the server to set is size, * and even then, it can only be set if it is 0. */ *attrset = 0; if (trunc) *attrset = FATTR4_SIZE_MASK; } } if (ntov_table_init) nfs4_ntov_table_free(&ntov, &sarg); /* * Get the initial "after" sequence number, if it fails, * set to zero, time to before. */ iva.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) { iva.va_seq = 0; iva.va_ctime = bva.va_ctime; } /* * create_vnode attempts to create the file exclusive, * if it already exists the VOP_CREATE will fail and * may not increase va_seq. It is atomic if * we haven't changed the directory, but if it has changed * we don't know what changed it. */ if (!created) { if (bva.va_seq && iva.va_seq && bva.va_seq == iva.va_seq) cinfo->atomic = TRUE; else cinfo->atomic = FALSE; NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime); } else { /* * The entry was created, we need to sync the * directory metadata. */ (void) VOP_FSYNC(dvp, 0, cs->cr, NULL); /* * Get "after" change value, if it fails, simply return the * before value. */ ava.va_mask = AT_CTIME|AT_SEQ; if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) { ava.va_ctime = bva.va_ctime; ava.va_seq = 0; } NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime); /* * The cinfo->atomic = TRUE only if we have * non-zero va_seq's, and it has incremented by exactly one * during the create_vnode and it didn't * change during the VOP_FSYNC. */ if (bva.va_seq && iva.va_seq && ava.va_seq && iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq) cinfo->atomic = TRUE; else cinfo->atomic = FALSE; } /* Check for mandatory locking and that the size gets set. */ cva.va_mask = AT_MODE; if (setsize) cva.va_mask |= AT_SIZE; /* Assume the worst */ cs->mandlock = TRUE; if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) { cs->mandlock = MANDLOCK(cs->vp, cva.va_mode); /* * Truncate the file if necessary; this would be * the case for create over an existing file. */ if (trunc) { int in_crit = 0; rfs4_file_t *fp; bool_t create = FALSE; /* * We are writing over an existing file. * Check to see if we need to recall a delegation. */ rfs4_hold_deleg_policy(); if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) { if (rfs4_check_delegated_byfp(FWRITE, fp, (reqsize == 0), FALSE, FALSE, &clientid)) { rfs4_file_rele(fp); rfs4_rele_deleg_policy(); VN_RELE(vp); *attrset = 0; return (NFS4ERR_DELAY); } rfs4_file_rele(fp); } rfs4_rele_deleg_policy(); if (nbl_need_check(vp)) { in_crit = 1; ASSERT(reqsize == 0); nbl_start_crit(vp, RW_READER); if (nbl_conflict(vp, NBL_WRITE, 0, cva.va_size, 0, NULL)) { in_crit = 0; nbl_end_crit(vp); VN_RELE(vp); *attrset = 0; return (NFS4ERR_ACCESS); } } ct.cc_sysid = 0; ct.cc_pid = 0; ct.cc_caller_id = nfs4_srv_caller_id; ct.cc_flags = CC_DONTBLOCK; cva.va_mask = AT_SIZE; cva.va_size = reqsize; (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct); if (in_crit) nbl_end_crit(vp); } } error = makefh4(&cs->fh, vp, cs->exi); /* * Force modified data and metadata out to stable storage. */ (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL); if (error) { VN_RELE(vp); *attrset = 0; return (puterrno4(error)); } /* if parent dir is attrdir, set namedattr fh flag */ if (dvp->v_flag & V_XATTRDIR) set_fh4_flag(&cs->fh, FH4_NAMEDATTR); if (cs->vp) VN_RELE(cs->vp); cs->vp = vp; /* * if we did not create the file, we will need to check * the access bits on the file */ if (!created) { if (setsize) args->share_access |= OPEN4_SHARE_ACCESS_WRITE; status = check_open_access(args->share_access, cs, req); if (status != NFS4_OK) *attrset = 0; } return (status); } /*ARGSUSED*/ static void rfs4_do_open(struct compound_state *cs, struct svc_req *req, rfs4_openowner_t *oo, delegreq_t deleg, uint32_t access, uint32_t deny, OPEN4res *resp, int deleg_cur) { /* XXX Currently not using req */ rfs4_state_t *sp; rfs4_file_t *fp; bool_t screate = TRUE; bool_t fcreate = TRUE; uint32_t open_a, share_a; uint32_t open_d, share_d; rfs4_deleg_state_t *dsp; sysid_t sysid; nfsstat4 status; caller_context_t ct; int fflags = 0; int recall = 0; int err; int first_open; /* get the file struct and hold a lock on it during initial open */ fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate); if (fp == NULL) { resp->status = NFS4ERR_RESOURCE; DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status); return; } sp = rfs4_findstate_by_owner_file(oo, fp, &screate); if (sp == NULL) { resp->status = NFS4ERR_RESOURCE; DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status); /* No need to keep any reference */ rw_exit(&fp->rf_file_rwlock); rfs4_file_rele(fp); return; } /* try to get the sysid before continuing */ if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) { resp->status = status; rfs4_file_rele(fp); /* Not a fully formed open; "close" it */ if (screate == TRUE) rfs4_state_close(sp, FALSE, FALSE, cs->cr); rfs4_state_rele(sp); return; } /* Calculate the fflags for this OPEN. */ if (access & OPEN4_SHARE_ACCESS_READ) fflags |= FREAD; if (access & OPEN4_SHARE_ACCESS_WRITE) fflags |= FWRITE; rfs4_dbe_lock(sp->rs_dbe); /* * Calculate the new deny and access mode that this open is adding to * the file for this open owner; */ open_d = (deny & ~sp->rs_open_deny); open_a = (access & ~sp->rs_open_access); /* * Calculate the new share access and share deny modes that this open * is adding to the file for this open owner; */ share_a = (access & ~sp->rs_share_access); share_d = (deny & ~sp->rs_share_deny); first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0; /* * Check to see the client has already sent an open for this * open owner on this file with the same share/deny modes. * If so, we don't need to check for a conflict and we don't * need to add another shrlock. If not, then we need to * check for conflicts in deny and access before checking for * conflicts in delegation. We don't want to recall a * delegation based on an open that will eventually fail based * on shares modes. */ if (share_a || share_d) { if ((err = rfs4_share(sp, access, deny)) != 0) { rfs4_dbe_unlock(sp->rs_dbe); resp->status = err; rfs4_file_rele(fp); /* Not a fully formed open; "close" it */ if (screate == TRUE) rfs4_state_close(sp, FALSE, FALSE, cs->cr); rfs4_state_rele(sp); return; } } rfs4_dbe_lock(fp->rf_dbe); /* * Check to see if this file is delegated and if so, if a * recall needs to be done. */ if (rfs4_check_recall(sp, access)) { rfs4_dbe_unlock(fp->rf_dbe); rfs4_dbe_unlock(sp->rs_dbe); rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client); delay(NFS4_DELEGATION_CONFLICT_DELAY); rfs4_dbe_lock(sp->rs_dbe); /* if state closed while lock was dropped */ if (sp->rs_closed) { if (share_a || share_d) (void) rfs4_unshare(sp); rfs4_dbe_unlock(sp->rs_dbe); rfs4_file_rele(fp); /* Not a fully formed open; "close" it */ if (screate == TRUE) rfs4_state_close(sp, FALSE, FALSE, cs->cr); rfs4_state_rele(sp); resp->status = NFS4ERR_OLD_STATEID; return; } rfs4_dbe_lock(fp->rf_dbe); /* Let's see if the delegation was returned */ if (rfs4_check_recall(sp, access)) { rfs4_dbe_unlock(fp->rf_dbe); if (share_a || share_d) (void) rfs4_unshare(sp); rfs4_dbe_unlock(sp->rs_dbe); rfs4_file_rele(fp); rfs4_update_lease(sp->rs_owner->ro_client); /* Not a fully formed open; "close" it */ if (screate == TRUE) rfs4_state_close(sp, FALSE, FALSE, cs->cr); rfs4_state_rele(sp); resp->status = NFS4ERR_DELAY; return; } } /* * the share check passed and any delegation conflict has been * taken care of, now call vop_open. * if this is the first open then call vop_open with fflags. * if not, call vn_open_upgrade with just the upgrade flags. * * if the file has been opened already, it will have the current * access mode in the state struct. if it has no share access, then * this is a new open. * * However, if this is open with CLAIM_DLEGATE_CUR, then don't * call VOP_OPEN(), just do the open upgrade. */ if (first_open && !deleg_cur) { ct.cc_sysid = sysid; ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); ct.cc_caller_id = nfs4_srv_caller_id; ct.cc_flags = CC_DONTBLOCK; err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct); if (err) { rfs4_dbe_unlock(fp->rf_dbe); if (share_a || share_d) (void) rfs4_unshare(sp); rfs4_dbe_unlock(sp->rs_dbe); rfs4_file_rele(fp); /* Not a fully formed open; "close" it */ if (screate == TRUE) rfs4_state_close(sp, FALSE, FALSE, cs->cr); rfs4_state_rele(sp); /* check if a monitor detected a delegation conflict */ if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK)) resp->status = NFS4ERR_DELAY; else resp->status = NFS4ERR_SERVERFAULT; return; } } else { /* open upgrade */ /* * calculate the fflags for the new mode that is being added * by this upgrade. */ fflags = 0; if (open_a & OPEN4_SHARE_ACCESS_READ) fflags |= FREAD; if (open_a & OPEN4_SHARE_ACCESS_WRITE) fflags |= FWRITE; vn_open_upgrade(cs->vp, fflags); } sp->rs_open_access |= access; sp->rs_open_deny |= deny; if (open_d & OPEN4_SHARE_DENY_READ) fp->rf_deny_read++; if (open_d & OPEN4_SHARE_DENY_WRITE) fp->rf_deny_write++; fp->rf_share_deny |= deny; if (open_a & OPEN4_SHARE_ACCESS_READ) fp->rf_access_read++; if (open_a & OPEN4_SHARE_ACCESS_WRITE) fp->rf_access_write++; fp->rf_share_access |= access; /* * Check for delegation here. if the deleg argument is not * DELEG_ANY, then this is a reclaim from a client and * we must honor the delegation requested. If necessary we can * set the recall flag. */ dsp = rfs4_grant_delegation(deleg, sp, &recall); cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE); next_stateid(&sp->rs_stateid); resp->stateid = sp->rs_stateid.stateid; rfs4_dbe_unlock(fp->rf_dbe); rfs4_dbe_unlock(sp->rs_dbe); if (dsp) { rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall); rfs4_deleg_state_rele(dsp); } rfs4_file_rele(fp); rfs4_state_rele(sp); resp->status = NFS4_OK; } /*ARGSUSED*/ static void rfs4_do_opennull(struct compound_state *cs, struct svc_req *req, OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) { change_info4 *cinfo = &resp->cinfo; bitmap4 *attrset = &resp->attrset; if (args->opentype == OPEN4_NOCREATE) resp->status = rfs4_lookupfile(&args->open_claim4_u.file, req, cs, args->share_access, cinfo); else { /* inhibit delegation grants during exclusive create */ if (args->mode == EXCLUSIVE4) rfs4_disable_delegation(); resp->status = rfs4_createfile(args, req, cs, cinfo, attrset, oo->ro_client->rc_clientid); } if (resp->status == NFS4_OK) { /* cs->vp cs->fh now reference the desired file */ rfs4_do_open(cs, req, oo, oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY, args->share_access, args->share_deny, resp, 0); /* * If rfs4_createfile set attrset, we must * clear this attrset before the response is copied. */ if (resp->status != NFS4_OK && resp->attrset) { resp->attrset = 0; } } else *cs->statusp = resp->status; if (args->mode == EXCLUSIVE4) rfs4_enable_delegation(); } /*ARGSUSED*/ static void rfs4_do_openprev(struct compound_state *cs, struct svc_req *req, OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) { change_info4 *cinfo = &resp->cinfo; vattr_t va; vtype_t v_type = cs->vp->v_type; int error = 0; /* Verify that we have a regular file */ if (v_type != VREG) { if (v_type == VDIR) resp->status = NFS4ERR_ISDIR; else if (v_type == VLNK) resp->status = NFS4ERR_SYMLINK; else resp->status = NFS4ERR_INVAL; return; } va.va_mask = AT_MODE|AT_UID; error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL); if (error) { resp->status = puterrno4(error); return; } cs->mandlock = MANDLOCK(cs->vp, va.va_mode); /* * Check if we have access to the file, Note the the file * could have originally been open UNCHECKED or GUARDED * with mode bits that will now fail, but there is nothing * we can really do about that except in the case that the * owner of the file is the one requesting the open. */ if (crgetuid(cs->cr) != va.va_uid) { resp->status = check_open_access(args->share_access, cs, req); if (resp->status != NFS4_OK) { return; } } /* * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero */ cinfo->before = 0; cinfo->after = 0; cinfo->atomic = FALSE; rfs4_do_open(cs, req, oo, NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type), args->share_access, args->share_deny, resp, 0); } static void rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req, OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) { int error; nfsstat4 status; stateid4 stateid = args->open_claim4_u.delegate_cur_info.delegate_stateid; rfs4_deleg_state_t *dsp; /* * Find the state info from the stateid and confirm that the * file is delegated. If the state openowner is the same as * the supplied openowner we're done. If not, get the file * info from the found state info. Use that file info to * create the state for this lock owner. Note solaris doen't * really need the pathname to find the file. We may want to * lookup the pathname and make sure that the vp exist and * matches the vp in the file structure. However it is * possible that the pathname nolonger exists (local process * unlinks the file), so this may not be that useful. */ status = rfs4_get_deleg_state(&stateid, &dsp); if (status != NFS4_OK) { resp->status = status; return; } ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE); /* * New lock owner, create state. Since this was probably called * in response to a CB_RECALL we set deleg to DELEG_NONE */ ASSERT(cs->vp != NULL); VN_RELE(cs->vp); VN_HOLD(dsp->rds_finfo->rf_vp); cs->vp = dsp->rds_finfo->rf_vp; if (error = makefh4(&cs->fh, cs->vp, cs->exi)) { rfs4_deleg_state_rele(dsp); *cs->statusp = resp->status = puterrno4(error); return; } /* Mark progress for delegation returns */ dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec(); rfs4_deleg_state_rele(dsp); rfs4_do_open(cs, req, oo, DELEG_NONE, args->share_access, args->share_deny, resp, 1); } /*ARGSUSED*/ static void rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req, OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp) { /* * Lookup the pathname, it must already exist since this file * was delegated. * * Find the file and state info for this vp and open owner pair. * check that they are in fact delegated. * check that the state access and deny modes are the same. * * Return the delgation possibly seting the recall flag. */ rfs4_file_t *fp; rfs4_state_t *sp; bool_t create = FALSE; bool_t dcreate = FALSE; rfs4_deleg_state_t *dsp; nfsace4 *ace; /* Note we ignore oflags */ resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev, req, cs, args->share_access, &resp->cinfo); if (resp->status != NFS4_OK) { return; } /* get the file struct and hold a lock on it during initial open */ fp = rfs4_findfile_withlock(cs->vp, NULL, &create); if (fp == NULL) { resp->status = NFS4ERR_RESOURCE; DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status); return; } sp = rfs4_findstate_by_owner_file(oo, fp, &create); if (sp == NULL) { resp->status = NFS4ERR_SERVERFAULT; DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status); rw_exit(&fp->rf_file_rwlock); rfs4_file_rele(fp); return; } rfs4_dbe_lock(sp->rs_dbe); rfs4_dbe_lock(fp->rf_dbe); if (args->share_access != sp->rs_share_access || args->share_deny != sp->rs_share_deny || sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) { NFS4_DEBUG(rfs4_debug, (CE_NOTE, "rfs4_do_opendelprev: state mixup")); rfs4_dbe_unlock(fp->rf_dbe); rfs4_dbe_unlock(sp->rs_dbe); rfs4_file_rele(fp); rfs4_state_rele(sp); resp->status = NFS4ERR_SERVERFAULT; return; } rfs4_dbe_unlock(fp->rf_dbe); rfs4_dbe_unlock(sp->rs_dbe); dsp = rfs4_finddeleg(sp, &dcreate); if (dsp == NULL) { rfs4_state_rele(sp); rfs4_file_rele(fp); resp->status = NFS4ERR_SERVERFAULT; return; } next_stateid(&sp->rs_stateid); resp->stateid = sp->rs_stateid.stateid; resp->delegation.delegation_type = dsp->rds_dtype; if (dsp->rds_dtype == OPEN_DELEGATE_READ) { open_read_delegation4 *rv = &resp->delegation.open_delegation4_u.read; rv->stateid = dsp->rds_delegid.stateid; rv->recall = FALSE; /* no policy in place to set to TRUE */ ace = &rv->permissions; } else { open_write_delegation4 *rv = &resp->delegation.open_delegation4_u.write; rv->stateid = dsp->rds_delegid.stateid; rv->recall = FALSE; /* no policy in place to set to TRUE */ ace = &rv->permissions; rv->space_limit.limitby = NFS_LIMIT_SIZE; rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX; } /* XXX For now */ ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE; ace->flag = 0; ace->access_mask = 0; ace->who.utf8string_len = 0; ace->who.utf8string_val = 0; rfs4_deleg_state_rele(dsp); rfs4_state_rele(sp); rfs4_file_rele(fp); } typedef enum { NFS4_CHKSEQ_OKAY = 0, NFS4_CHKSEQ_REPLAY = 1, NFS4_CHKSEQ_BAD = 2 } rfs4_chkseq_t; /* * Generic function for sequence number checks. */ static rfs4_chkseq_t rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop, seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres) { /* Same sequence ids and matching operations? */ if (seqid == rqst_seq && resop->resop == lastop->resop) { if (copyres == TRUE) { rfs4_free_reply(resop); rfs4_copy_reply(resop, lastop); } NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Replayed SEQID %d\n", seqid)); return (NFS4_CHKSEQ_REPLAY); } /* If the incoming sequence is not the next expected then it is bad */ if (rqst_seq != seqid + 1) { if (rqst_seq == seqid) { NFS4_DEBUG(rfs4_debug, (CE_NOTE, "BAD SEQID: Replayed sequence id " "but last op was %d current op is %d\n", lastop->resop, resop->resop)); return (NFS4_CHKSEQ_BAD); } NFS4_DEBUG(rfs4_debug, (CE_NOTE, "BAD SEQID: got %u expecting %u\n", rqst_seq, seqid)); return (NFS4_CHKSEQ_BAD); } /* Everything okay -- next expected */ return (NFS4_CHKSEQ_OKAY); } static rfs4_chkseq_t rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop) { rfs4_chkseq_t rc; rfs4_dbe_lock(op->ro_dbe); rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop, TRUE); rfs4_dbe_unlock(op->ro_dbe); if (rc == NFS4_CHKSEQ_OKAY) rfs4_update_lease(op->ro_client); return (rc); } static rfs4_chkseq_t rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop) { rfs4_chkseq_t rc; rfs4_dbe_lock(op->ro_dbe); rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, olo_seqid, resop, FALSE); rfs4_dbe_unlock(op->ro_dbe); return (rc); } static rfs4_chkseq_t rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop) { rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY; rfs4_dbe_lock(lsp->rls_dbe); if (!lsp->rls_skip_seqid_check) rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid, resop, TRUE); rfs4_dbe_unlock(lsp->rls_dbe); return (rc); } static void rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { OPEN4args *args = &argop->nfs_argop4_u.opopen; OPEN4res *resp = &resop->nfs_resop4_u.opopen; open_owner4 *owner = &args->owner; open_claim_type4 claim = args->claim; rfs4_client_t *cp; rfs4_openowner_t *oo; bool_t create; bool_t replay = FALSE; int can_reclaim; DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs, OPEN4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto end; } /* * Need to check clientid and lease expiration first based on * error ordering and incrementing sequence id. */ cp = rfs4_findclient_by_id(owner->clientid, FALSE); if (cp == NULL) { *cs->statusp = resp->status = rfs4_check_clientid(&owner->clientid, 0); goto end; } if (rfs4_lease_expired(cp)) { rfs4_client_close(cp); *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto end; } can_reclaim = cp->rc_can_reclaim; /* * Find the open_owner for use from this point forward. Take * care in updating the sequence id based on the type of error * being returned. */ retry: create = TRUE; oo = rfs4_findopenowner(owner, &create, args->seqid); if (oo == NULL) { *cs->statusp = resp->status = NFS4ERR_RESOURCE; rfs4_client_rele(cp); goto end; } /* Hold off access to the sequence space while the open is done */ rfs4_sw_enter(&oo->ro_sw); /* * If the open_owner existed before at the server, then check * the sequence id. */ if (!create && !oo->ro_postpone_confirm) { switch (rfs4_check_open_seqid(args->seqid, oo, resop)) { case NFS4_CHKSEQ_BAD: if ((args->seqid > oo->ro_open_seqid) && oo->ro_need_confirm) { rfs4_free_opens(oo, TRUE, FALSE); rfs4_sw_exit(&oo->ro_sw); rfs4_openowner_rele(oo); goto retry; } resp->status = NFS4ERR_BAD_SEQID; goto out; case NFS4_CHKSEQ_REPLAY: /* replay of previous request */ replay = TRUE; goto out; default: break; } /* * Sequence was ok and open owner exists * check to see if we have yet to see an * open_confirm. */ if (oo->ro_need_confirm) { rfs4_free_opens(oo, TRUE, FALSE); rfs4_sw_exit(&oo->ro_sw); rfs4_openowner_rele(oo); goto retry; } } /* Grace only applies to regular-type OPENs */ if (rfs4_clnt_in_grace(cp) && (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) { *cs->statusp = resp->status = NFS4ERR_GRACE; goto out; } /* * If previous state at the server existed then can_reclaim * will be set. If not reply NFS4ERR_NO_GRACE to the * client. */ if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) { *cs->statusp = resp->status = NFS4ERR_NO_GRACE; goto out; } /* * Reject the open if the client has missed the grace period */ if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) { *cs->statusp = resp->status = NFS4ERR_NO_GRACE; goto out; } /* Couple of up-front bookkeeping items */ if (oo->ro_need_confirm) { /* * If this is a reclaim OPEN then we should not ask * for a confirmation of the open_owner per the * protocol specification. */ if (claim == CLAIM_PREVIOUS) oo->ro_need_confirm = FALSE; else resp->rflags |= OPEN4_RESULT_CONFIRM; } resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX; /* * If there is an unshared filesystem mounted on this vnode, * do not allow to open/create in this directory. */ if (vn_ismntpt(cs->vp)) { *cs->statusp = resp->status = NFS4ERR_ACCESS; goto out; } /* * access must READ, WRITE, or BOTH. No access is invalid. * deny can be READ, WRITE, BOTH, or NONE. * bits not defined for access/deny are invalid. */ if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) || (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) || (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } /* * make sure attrset is zero before response is built. */ resp->attrset = 0; switch (claim) { case CLAIM_NULL: rfs4_do_opennull(cs, req, args, oo, resp); break; case CLAIM_PREVIOUS: rfs4_do_openprev(cs, req, args, oo, resp); break; case CLAIM_DELEGATE_CUR: rfs4_do_opendelcur(cs, req, args, oo, resp); break; case CLAIM_DELEGATE_PREV: rfs4_do_opendelprev(cs, req, args, oo, resp); break; default: resp->status = NFS4ERR_INVAL; break; } out: rfs4_client_rele(cp); /* Catch sequence id handling here to make it a little easier */ switch (resp->status) { case NFS4ERR_BADXDR: case NFS4ERR_BAD_SEQID: case NFS4ERR_BAD_STATEID: case NFS4ERR_NOFILEHANDLE: case NFS4ERR_RESOURCE: case NFS4ERR_STALE_CLIENTID: case NFS4ERR_STALE_STATEID: /* * The protocol states that if any of these errors are * being returned, the sequence id should not be * incremented. Any other return requires an * increment. */ break; default: /* Always update the lease in this case */ rfs4_update_lease(oo->ro_client); /* Regular response - copy the result */ if (!replay) rfs4_update_open_resp(oo, resop, &cs->fh); /* * REPLAY case: Only if the previous response was OK * do we copy the filehandle. If not OK, no * filehandle to copy. */ if (replay == TRUE && resp->status == NFS4_OK && oo->ro_reply_fh.nfs_fh4_val) { /* * If this is a replay, we must restore the * current filehandle/vp to that of what was * returned originally. Try our best to do * it. */ nfs_fh4_fmt_t *fh_fmtp = (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val; cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen, NULL); if (cs->exi == NULL) { resp->status = NFS4ERR_STALE; goto finish; } VN_RELE(cs->vp); cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi, &resp->status); if (cs->vp == NULL) goto finish; nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh); } /* * If this was a replay, no need to update the * sequence id. If the open_owner was not created on * this pass, then update. The first use of an * open_owner will not bump the sequence id. */ if (replay == FALSE && !create) rfs4_update_open_sequence(oo); /* * If the client is receiving an error and the * open_owner needs to be confirmed, there is no way * to notify the client of this fact ignoring the fact * that the server has no method of returning a * stateid to confirm. Therefore, the server needs to * mark this open_owner in a way as to avoid the * sequence id checking the next time the client uses * this open_owner. */ if (resp->status != NFS4_OK && oo->ro_need_confirm) oo->ro_postpone_confirm = TRUE; /* * If OK response then clear the postpone flag and * reset the sequence id to keep in sync with the * client. */ if (resp->status == NFS4_OK && oo->ro_postpone_confirm) { oo->ro_postpone_confirm = FALSE; oo->ro_open_seqid = args->seqid; } break; } finish: *cs->statusp = resp->status; rfs4_sw_exit(&oo->ro_sw); rfs4_openowner_rele(oo); end: DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs, OPEN4res *, resp); } /*ARGSUSED*/ void rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm; OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm; rfs4_state_t *sp; nfsstat4 status; DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs, OPEN_CONFIRM4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->vp->v_type != VREG) { *cs->statusp = resp->status = cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL; return; } status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } /* Ensure specified filehandle matches */ if (cs->vp != sp->rs_finfo->rf_vp) { rfs4_state_rele(sp); *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto out; } /* hold off other access to open_owner while we tinker */ rfs4_sw_enter(&sp->rs_owner->ro_sw); switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { case NFS4_CHECK_STATEID_OKAY: if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, resop) != 0) { *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; break; } /* * If it is the appropriate stateid and determined to * be "OKAY" then this means that the stateid does not * need to be confirmed and the client is in error for * sending an OPEN_CONFIRM. */ *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; break; case NFS4_CHECK_STATEID_OLD: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; break; case NFS4_CHECK_STATEID_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; break; case NFS4_CHECK_STATEID_EXPIRED: *cs->statusp = resp->status = NFS4ERR_EXPIRED; break; case NFS4_CHECK_STATEID_CLOSED: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; break; case NFS4_CHECK_STATEID_REPLAY: switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, resop)) { case NFS4_CHKSEQ_OKAY: /* * This is replayed stateid; if seqid matches * next expected, then client is using wrong seqid. */ /* fall through */ case NFS4_CHKSEQ_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; break; case NFS4_CHKSEQ_REPLAY: /* * Note this case is the duplicate case so * resp->status is already set. */ *cs->statusp = resp->status; rfs4_update_lease(sp->rs_owner->ro_client); break; } break; case NFS4_CHECK_STATEID_UNCONFIRMED: if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, resop) != NFS4_CHKSEQ_OKAY) { *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; break; } *cs->statusp = resp->status = NFS4_OK; next_stateid(&sp->rs_stateid); resp->open_stateid = sp->rs_stateid.stateid; sp->rs_owner->ro_need_confirm = FALSE; rfs4_update_lease(sp->rs_owner->ro_client); rfs4_update_open_sequence(sp->rs_owner); rfs4_update_open_resp(sp->rs_owner, resop, NULL); break; default: ASSERT(FALSE); *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; break; } rfs4_sw_exit(&sp->rs_owner->ro_sw); rfs4_state_rele(sp); out: DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs, OPEN_CONFIRM4res *, resp); } /*ARGSUSED*/ void rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade; OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade; uint32_t access = args->share_access; uint32_t deny = args->share_deny; nfsstat4 status; rfs4_state_t *sp; rfs4_file_t *fp; int fflags = 0; DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs, OPEN_DOWNGRADE4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } if (cs->vp->v_type != VREG) { *cs->statusp = resp->status = NFS4ERR_INVAL; return; } status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } /* Ensure specified filehandle matches */ if (cs->vp != sp->rs_finfo->rf_vp) { rfs4_state_rele(sp); *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto out; } /* hold off other access to open_owner while we tinker */ rfs4_sw_enter(&sp->rs_owner->ro_sw); switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { case NFS4_CHECK_STATEID_OKAY: if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, resop) != NFS4_CHKSEQ_OKAY) { *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; } break; case NFS4_CHECK_STATEID_OLD: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_EXPIRED: *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto end; case NFS4_CHECK_STATEID_CLOSED: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_UNCONFIRMED: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_REPLAY: /* Check the sequence id for the open owner */ switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, resop)) { case NFS4_CHKSEQ_OKAY: /* * This is replayed stateid; if seqid matches * next expected, then client is using wrong seqid. */ /* fall through */ case NFS4_CHKSEQ_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; case NFS4_CHKSEQ_REPLAY: /* * Note this case is the duplicate case so * resp->status is already set. */ *cs->statusp = resp->status; rfs4_update_lease(sp->rs_owner->ro_client); goto end; } break; default: ASSERT(FALSE); break; } rfs4_dbe_lock(sp->rs_dbe); /* * Check that the new access modes and deny modes are valid. * Check that no invalid bits are set. */ if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) || (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) { *cs->statusp = resp->status = NFS4ERR_INVAL; rfs4_update_open_sequence(sp->rs_owner); rfs4_dbe_unlock(sp->rs_dbe); goto end; } /* * The new modes must be a subset of the current modes and * the access must specify at least one mode. To test that * the new mode is a subset of the current modes we bitwise * AND them together and check that the result equals the new * mode. For example: * New mode, access == R and current mode, sp->rs_open_access == RW * access & sp->rs_open_access == R == access, so the new access mode * is valid. Consider access == RW, sp->rs_open_access = R * access & sp->rs_open_access == R != access, so the new access mode * is invalid. */ if ((access & sp->rs_open_access) != access || (deny & sp->rs_open_deny) != deny || (access & (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) { *cs->statusp = resp->status = NFS4ERR_INVAL; rfs4_update_open_sequence(sp->rs_owner); rfs4_dbe_unlock(sp->rs_dbe); goto end; } /* * Release any share locks associated with this stateID. * Strictly speaking, this violates the spec because the * spec effectively requires that open downgrade be atomic. * At present, fs_shrlock does not have this capability. */ (void) rfs4_unshare(sp); status = rfs4_share(sp, access, deny); if (status != NFS4_OK) { *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; rfs4_update_open_sequence(sp->rs_owner); rfs4_dbe_unlock(sp->rs_dbe); goto end; } fp = sp->rs_finfo; rfs4_dbe_lock(fp->rf_dbe); /* * If the current mode has deny read and the new mode * does not, decrement the number of deny read mode bits * and if it goes to zero turn off the deny read bit * on the file. */ if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) && (deny & OPEN4_SHARE_DENY_READ) == 0) { fp->rf_deny_read--; if (fp->rf_deny_read == 0) fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; } /* * If the current mode has deny write and the new mode * does not, decrement the number of deny write mode bits * and if it goes to zero turn off the deny write bit * on the file. */ if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) && (deny & OPEN4_SHARE_DENY_WRITE) == 0) { fp->rf_deny_write--; if (fp->rf_deny_write == 0) fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; } /* * If the current mode has access read and the new mode * does not, decrement the number of access read mode bits * and if it goes to zero turn off the access read bit * on the file. set fflags to FREAD for the call to * vn_open_downgrade(). */ if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) && (access & OPEN4_SHARE_ACCESS_READ) == 0) { fp->rf_access_read--; if (fp->rf_access_read == 0) fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; fflags |= FREAD; } /* * If the current mode has access write and the new mode * does not, decrement the number of access write mode bits * and if it goes to zero turn off the access write bit * on the file. set fflags to FWRITE for the call to * vn_open_downgrade(). */ if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) && (access & OPEN4_SHARE_ACCESS_WRITE) == 0) { fp->rf_access_write--; if (fp->rf_access_write == 0) fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE; fflags |= FWRITE; } /* Check that the file is still accessible */ ASSERT(fp->rf_share_access); rfs4_dbe_unlock(fp->rf_dbe); /* now set the new open access and deny modes */ sp->rs_open_access = access; sp->rs_open_deny = deny; /* * we successfully downgraded the share lock, now we need to downgrade * the open. it is possible that the downgrade was only for a deny * mode and we have nothing else to do. */ if ((fflags & (FREAD|FWRITE)) != 0) vn_open_downgrade(cs->vp, fflags); /* Update the stateid */ next_stateid(&sp->rs_stateid); resp->open_stateid = sp->rs_stateid.stateid; rfs4_dbe_unlock(sp->rs_dbe); *cs->statusp = resp->status = NFS4_OK; /* Update the lease */ rfs4_update_lease(sp->rs_owner->ro_client); /* And the sequence */ rfs4_update_open_sequence(sp->rs_owner); rfs4_update_open_resp(sp->rs_owner, resop, NULL); end: rfs4_sw_exit(&sp->rs_owner->ro_sw); rfs4_state_rele(sp); out: DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs, OPEN_DOWNGRADE4res *, resp); } static void * memstr(const void *s1, const char *s2, size_t n) { size_t l = strlen(s2); char *p = (char *)s1; while (n >= l) { if (bcmp(p, s2, l) == 0) return (p); p++; n--; } return (NULL); } /* * The logic behind this function is detailed in the NFSv4 RFC in the * SETCLIENTID operation description under IMPLEMENTATION. Refer to * that section for explicit guidance to server behavior for * SETCLIENTID. */ void rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid; SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid; rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed; rfs4_clntip_t *ci; bool_t create; char *addr, *netid; int len; DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs, SETCLIENTID4args *, args); retry: newcp = cp_confirmed = cp_unconfirmed = NULL; /* * Save the caller's IP address */ args->client.cl_addr = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; /* * Record if it is a Solaris client that cannot handle referrals. */ if (memstr(args->client.id_val, "Solaris", args->client.id_len) && !memstr(args->client.id_val, "+referrals", args->client.id_len)) { /* Add a "yes, it's downrev" record */ create = TRUE; ci = rfs4_find_clntip(args->client.cl_addr, &create); ASSERT(ci != NULL); rfs4_dbe_rele(ci->ri_dbe); } else { /* Remove any previous record */ rfs4_invalidate_clntip(args->client.cl_addr); } /* * In search of an EXISTING client matching the incoming * request to establish a new client identifier at the server */ create = TRUE; cp = rfs4_findclient(&args->client, &create, NULL); /* Should never happen */ ASSERT(cp != NULL); if (cp == NULL) { *cs->statusp = res->status = NFS4ERR_SERVERFAULT; goto out; } /* * Easiest case. Client identifier is newly created and is * unconfirmed. Also note that for this case, no other * entries exist for the client identifier. Nothing else to * check. Just setup the response and respond. */ if (create) { *cs->statusp = res->status = NFS4_OK; res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid; res->SETCLIENTID4res_u.resok4.setclientid_confirm = cp->rc_confirm_verf; /* Setup callback information; CB_NULL confirmation later */ rfs4_client_setcb(cp, &args->callback, args->callback_ident); rfs4_client_rele(cp); goto out; } /* * An existing, confirmed client may exist but it may not have * been active for at least one lease period. If so, then * "close" the client and create a new client identifier */ if (rfs4_lease_expired(cp)) { rfs4_client_close(cp); goto retry; } if (cp->rc_need_confirm == TRUE) cp_unconfirmed = cp; else cp_confirmed = cp; cp = NULL; /* * We have a confirmed client, now check for an * unconfimred entry */ if (cp_confirmed) { /* If creds don't match then client identifier is inuse */ if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) { rfs4_cbinfo_t *cbp; /* * Some one else has established this client * id. Try and say * who they are. We will use * the call back address supplied by * the * first client. */ *cs->statusp = res->status = NFS4ERR_CLID_INUSE; addr = netid = NULL; cbp = &cp_confirmed->rc_cbinfo; if (cbp->cb_callback.cb_location.r_addr && cbp->cb_callback.cb_location.r_netid) { cb_client4 *cbcp = &cbp->cb_callback; len = strlen(cbcp->cb_location.r_addr)+1; addr = kmem_alloc(len, KM_SLEEP); bcopy(cbcp->cb_location.r_addr, addr, len); len = strlen(cbcp->cb_location.r_netid)+1; netid = kmem_alloc(len, KM_SLEEP); bcopy(cbcp->cb_location.r_netid, netid, len); } res->SETCLIENTID4res_u.client_using.r_addr = addr; res->SETCLIENTID4res_u.client_using.r_netid = netid; rfs4_client_rele(cp_confirmed); } /* * Confirmed, creds match, and verifier matches; must * be an update of the callback info */ if (cp_confirmed->rc_nfs_client.verifier == args->client.verifier) { /* Setup callback information */ rfs4_client_setcb(cp_confirmed, &args->callback, args->callback_ident); /* everything okay -- move ahead */ *cs->statusp = res->status = NFS4_OK; res->SETCLIENTID4res_u.resok4.clientid = cp_confirmed->rc_clientid; /* update the confirm_verifier and return it */ rfs4_client_scv_next(cp_confirmed); res->SETCLIENTID4res_u.resok4.setclientid_confirm = cp_confirmed->rc_confirm_verf; rfs4_client_rele(cp_confirmed); goto out; } /* * Creds match but the verifier doesn't. Must search * for an unconfirmed client that would be replaced by * this request. */ create = FALSE; cp_unconfirmed = rfs4_findclient(&args->client, &create, cp_confirmed); } /* * At this point, we have taken care of the brand new client * struct, INUSE case, update of an existing, and confirmed * client struct. */ /* * check to see if things have changed while we originally * picked up the client struct. If they have, then return and * retry the processing of this SETCLIENTID request. */ if (cp_unconfirmed) { rfs4_dbe_lock(cp_unconfirmed->rc_dbe); if (!cp_unconfirmed->rc_need_confirm) { rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); rfs4_client_rele(cp_unconfirmed); if (cp_confirmed) rfs4_client_rele(cp_confirmed); goto retry; } /* do away with the old unconfirmed one */ rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe); rfs4_dbe_unlock(cp_unconfirmed->rc_dbe); rfs4_client_rele(cp_unconfirmed); cp_unconfirmed = NULL; } /* * This search will temporarily hide the confirmed client * struct while a new client struct is created as the * unconfirmed one. */ create = TRUE; newcp = rfs4_findclient(&args->client, &create, cp_confirmed); ASSERT(newcp != NULL); if (newcp == NULL) { *cs->statusp = res->status = NFS4ERR_SERVERFAULT; rfs4_client_rele(cp_confirmed); goto out; } /* * If one was not created, then a similar request must be in * process so release and start over with this one */ if (create != TRUE) { rfs4_client_rele(newcp); if (cp_confirmed) rfs4_client_rele(cp_confirmed); goto retry; } *cs->statusp = res->status = NFS4_OK; res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid; res->SETCLIENTID4res_u.resok4.setclientid_confirm = newcp->rc_confirm_verf; /* Setup callback information; CB_NULL confirmation later */ rfs4_client_setcb(newcp, &args->callback, args->callback_ident); newcp->rc_cp_confirmed = cp_confirmed; rfs4_client_rele(newcp); out: DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs, SETCLIENTID4res *, res); } /*ARGSUSED*/ void rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { SETCLIENTID_CONFIRM4args *args = &argop->nfs_argop4_u.opsetclientid_confirm; SETCLIENTID_CONFIRM4res *res = &resop->nfs_resop4_u.opsetclientid_confirm; rfs4_client_t *cp, *cptoclose = NULL; DTRACE_NFSV4_2(op__setclientid__confirm__start, struct compound_state *, cs, SETCLIENTID_CONFIRM4args *, args); *cs->statusp = res->status = NFS4_OK; cp = rfs4_findclient_by_id(args->clientid, TRUE); if (cp == NULL) { *cs->statusp = res->status = rfs4_check_clientid(&args->clientid, 1); goto out; } if (!creds_ok(cp, req, cs)) { *cs->statusp = res->status = NFS4ERR_CLID_INUSE; rfs4_client_rele(cp); goto out; } /* If the verifier doesn't match, the record doesn't match */ if (cp->rc_confirm_verf != args->setclientid_confirm) { *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID; rfs4_client_rele(cp); goto out; } rfs4_dbe_lock(cp->rc_dbe); cp->rc_need_confirm = FALSE; if (cp->rc_cp_confirmed) { cptoclose = cp->rc_cp_confirmed; cptoclose->rc_ss_remove = 1; cp->rc_cp_confirmed = NULL; } /* * Update the client's associated server instance, if it's changed * since the client was created. */ if (rfs4_servinst(cp) != rfs4_cur_servinst) rfs4_servinst_assign(cp, rfs4_cur_servinst); /* * Record clientid in stable storage. * Must be done after server instance has been assigned. */ rfs4_ss_clid(cp); rfs4_dbe_unlock(cp->rc_dbe); if (cptoclose) /* don't need to rele, client_close does it */ rfs4_client_close(cptoclose); /* If needed, initiate CB_NULL call for callback path */ rfs4_deleg_cb_check(cp); rfs4_update_lease(cp); /* * Check to see if client can perform reclaims */ rfs4_ss_chkclid(cp); rfs4_client_rele(cp); out: DTRACE_NFSV4_2(op__setclientid__confirm__done, struct compound_state *, cs, SETCLIENTID_CONFIRM4 *, res); } /*ARGSUSED*/ void rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { CLOSE4args *args = &argop->nfs_argop4_u.opclose; CLOSE4res *resp = &resop->nfs_resop4_u.opclose; rfs4_state_t *sp; nfsstat4 status; DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs, CLOSE4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID); if (status != NFS4_OK) { *cs->statusp = resp->status = status; goto out; } /* Ensure specified filehandle matches */ if (cs->vp != sp->rs_finfo->rf_vp) { rfs4_state_rele(sp); *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto out; } /* hold off other access to open_owner while we tinker */ rfs4_sw_enter(&sp->rs_owner->ro_sw); switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) { case NFS4_CHECK_STATEID_OKAY: if (rfs4_check_open_seqid(args->seqid, sp->rs_owner, resop) != NFS4_CHKSEQ_OKAY) { *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; } break; case NFS4_CHECK_STATEID_OLD: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_EXPIRED: *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto end; case NFS4_CHECK_STATEID_CLOSED: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_UNCONFIRMED: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_REPLAY: /* Check the sequence id for the open owner */ switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner, resop)) { case NFS4_CHKSEQ_OKAY: /* * This is replayed stateid; if seqid matches * next expected, then client is using wrong seqid. */ /* FALL THROUGH */ case NFS4_CHKSEQ_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; case NFS4_CHKSEQ_REPLAY: /* * Note this case is the duplicate case so * resp->status is already set. */ *cs->statusp = resp->status; rfs4_update_lease(sp->rs_owner->ro_client); goto end; } break; default: ASSERT(FALSE); break; } rfs4_dbe_lock(sp->rs_dbe); /* Update the stateid. */ next_stateid(&sp->rs_stateid); resp->open_stateid = sp->rs_stateid.stateid; rfs4_dbe_unlock(sp->rs_dbe); rfs4_update_lease(sp->rs_owner->ro_client); rfs4_update_open_sequence(sp->rs_owner); rfs4_update_open_resp(sp->rs_owner, resop, NULL); rfs4_state_close(sp, FALSE, FALSE, cs->cr); *cs->statusp = resp->status = status; end: rfs4_sw_exit(&sp->rs_owner->ro_sw); rfs4_state_rele(sp); out: DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs, CLOSE4res *, resp); } /* * Manage the counts on the file struct and close all file locks */ /*ARGSUSED*/ void rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr, bool_t close_of_client) { rfs4_file_t *fp = sp->rs_finfo; rfs4_lo_state_t *lsp; int fflags = 0; /* * If this call is part of the larger closing down of client * state then it is just easier to release all locks * associated with this client instead of going through each * individual file and cleaning locks there. */ if (close_of_client) { if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE && !list_is_empty(&sp->rs_lostatelist) && sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) { /* Is the PxFS kernel module loaded? */ if (lm_remove_file_locks != NULL) { int new_sysid; /* Encode the cluster nodeid in new sysid */ new_sysid = sp->rs_owner->ro_client->rc_sysidt; lm_set_nlmid_flk(&new_sysid); /* * This PxFS routine removes file locks for a * client over all nodes of a cluster. */ NFS4_DEBUG(rfs4_debug, (CE_NOTE, "lm_remove_file_locks(sysid=0x%x)\n", new_sysid)); (*lm_remove_file_locks)(new_sysid); } else { struct flock64 flk; /* Release all locks for this client */ flk.l_type = F_UNLKSYS; flk.l_whence = 0; flk.l_start = 0; flk.l_len = 0; flk.l_sysid = sp->rs_owner->ro_client->rc_sysidt; flk.l_pid = 0; (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK, &flk, F_REMOTELOCK | FREAD | FWRITE, (u_offset_t)0, NULL, CRED(), NULL); } sp->rs_owner->ro_client->rc_unlksys_completed = TRUE; } } /* * Release all locks on this file by this lock owner or at * least mark the locks as having been released */ for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL; lsp = list_next(&sp->rs_lostatelist, lsp)) { lsp->rls_locks_cleaned = TRUE; /* Was this already taken care of above? */ if (!close_of_client && sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) (void) cleanlocks(sp->rs_finfo->rf_vp, lsp->rls_locker->rl_pid, lsp->rls_locker->rl_client->rc_sysidt); } /* * Release any shrlocks associated with this open state ID. * This must be done before the rfs4_state gets marked closed. */ if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) (void) rfs4_unshare(sp); if (sp->rs_open_access) { rfs4_dbe_lock(fp->rf_dbe); /* * Decrement the count for each access and deny bit that this * state has contributed to the file. * If the file counts go to zero * clear the appropriate bit in the appropriate mask. */ if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) { fp->rf_access_read--; fflags |= FREAD; if (fp->rf_access_read == 0) fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ; } if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) { fp->rf_access_write--; fflags |= FWRITE; if (fp->rf_access_write == 0) fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_WRITE; } if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) { fp->rf_deny_read--; if (fp->rf_deny_read == 0) fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ; } if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) { fp->rf_deny_write--; if (fp->rf_deny_write == 0) fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE; } (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL); rfs4_dbe_unlock(fp->rf_dbe); sp->rs_open_access = 0; sp->rs_open_deny = 0; } } /* * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure. */ static nfsstat4 lock_denied(LOCK4denied *dp, struct flock64 *flk) { rfs4_lockowner_t *lo; rfs4_client_t *cp; uint32_t len; lo = rfs4_findlockowner_by_pid(flk->l_pid); if (lo != NULL) { cp = lo->rl_client; if (rfs4_lease_expired(cp)) { rfs4_lockowner_rele(lo); rfs4_dbe_hold(cp->rc_dbe); rfs4_client_close(cp); return (NFS4ERR_EXPIRED); } dp->owner.clientid = lo->rl_owner.clientid; len = lo->rl_owner.owner_len; dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len); dp->owner.owner_len = len; rfs4_lockowner_rele(lo); goto finish; } /* * Its not a NFS4 lock. We take advantage that the upper 32 bits * of the client id contain the boot time for a NFS4 lock. So we * fabricate and identity by setting clientid to the sysid, and * the lock owner to the pid. */ dp->owner.clientid = flk->l_sysid; len = sizeof (pid_t); dp->owner.owner_len = len; dp->owner.owner_val = kmem_alloc(len, KM_SLEEP); bcopy(&flk->l_pid, dp->owner.owner_val, len); finish: dp->offset = flk->l_start; dp->length = flk->l_len; if (flk->l_type == F_RDLCK) dp->locktype = READ_LT; else if (flk->l_type == F_WRLCK) dp->locktype = WRITE_LT; else return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */ return (NFS4_OK); } /* * The NFSv4.0 LOCK operation does not support the blocking lock (at the * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared * for that (obviously); they are sending the LOCK requests with some delays * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the * locking and delay implementation at the client side. * * To make the life of the clients easier, the NFSv4.0 server tries to do some * fast retries on its own (the for loop below) in a hope the lock will be * available soon. And if not, the client won't need to resend the LOCK * requests so fast to check the lock availability. This basically saves some * network traffic and tries to make sure the client gets the lock ASAP. */ static int setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred) { int error; struct flock64 flk; int i; clock_t delaytime; int cmd; int spin_cnt = 0; cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; retry: delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay); for (i = 0; i < rfs4_maxlock_tries; i++) { LOCK_PRINT(rfs4_debug, "setlock", cmd, flock); error = VOP_FRLOCK(vp, cmd, flock, flag, (u_offset_t)0, NULL, cred, NULL); if (error != EAGAIN && error != EACCES) break; if (i < rfs4_maxlock_tries - 1) { delay(delaytime); delaytime *= 2; } } if (error == EAGAIN || error == EACCES) { /* Get the owner of the lock */ flk = *flock; LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk); if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred, NULL) == 0) { /* * There's a race inherent in the current VOP_FRLOCK * design where: * a: "other guy" takes a lock that conflicts with a * lock we want * b: we attempt to take our lock (non-blocking) and * the attempt fails. * c: "other guy" releases the conflicting lock * d: we ask what lock conflicts with the lock we want, * getting F_UNLCK (no lock blocks us) * * If we retry the non-blocking lock attempt in this * case (restart at step 'b') there's some possibility * that many such attempts might fail. However a test * designed to actually provoke this race shows that * the vast majority of cases require no retry, and * only a few took as many as three retries. Here's * the test outcome: * * number of retries how many times we needed * that many retries * 0 79461 * 1 862 * 2 49 * 3 5 * * Given those empirical results, we arbitrarily limit * the retry count to ten. * * If we actually make to ten retries and give up, * nothing catastrophic happens, but we're unable to * return the information about the conflicting lock to * the NFS client. That's an acceptable trade off vs. * letting this retry loop run forever. */ if (flk.l_type == F_UNLCK) { if (spin_cnt++ < 10) { /* No longer locked, retry */ goto retry; } } else { *flock = flk; LOCK_PRINT(rfs4_debug, "setlock(blocking lock)", F_GETLK, &flk); } } } return (error); } /*ARGSUSED*/ static nfsstat4 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype, offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop) { nfsstat4 status; rfs4_lockowner_t *lo = lsp->rls_locker; rfs4_state_t *sp = lsp->rls_state; struct flock64 flock; int16_t ltype; int flag; int error; sysid_t sysid; LOCK4res *lres; vnode_t *vp; if (rfs4_lease_expired(lo->rl_client)) { return (NFS4ERR_EXPIRED); } if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) return (status); /* Check for zero length. To lock to end of file use all ones for V4 */ if (length == 0) return (NFS4ERR_INVAL); else if (length == (length4)(~0)) length = 0; /* Posix to end of file */ retry: rfs4_dbe_lock(sp->rs_dbe); if (sp->rs_closed == TRUE) { rfs4_dbe_unlock(sp->rs_dbe); return (NFS4ERR_OLD_STATEID); } if (resop->resop != OP_LOCKU) { switch (locktype) { case READ_LT: case READW_LT: if ((sp->rs_share_access & OPEN4_SHARE_ACCESS_READ) == 0) { rfs4_dbe_unlock(sp->rs_dbe); return (NFS4ERR_OPENMODE); } ltype = F_RDLCK; break; case WRITE_LT: case WRITEW_LT: if ((sp->rs_share_access & OPEN4_SHARE_ACCESS_WRITE) == 0) { rfs4_dbe_unlock(sp->rs_dbe); return (NFS4ERR_OPENMODE); } ltype = F_WRLCK; break; } } else ltype = F_UNLCK; flock.l_type = ltype; flock.l_whence = 0; /* SEEK_SET */ flock.l_start = offset; flock.l_len = length; flock.l_sysid = sysid; flock.l_pid = lsp->rls_locker->rl_pid; /* Note that length4 is uint64_t but l_len and l_start are off64_t */ if (flock.l_len < 0 || flock.l_start < 0) { rfs4_dbe_unlock(sp->rs_dbe); return (NFS4ERR_INVAL); } /* * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE. */ flag = (int)sp->rs_share_access | F_REMOTELOCK; vp = sp->rs_finfo->rf_vp; VN_HOLD(vp); /* * We need to unlock sp before we call the underlying filesystem to * acquire the file lock. */ rfs4_dbe_unlock(sp->rs_dbe); error = setlock(vp, &flock, flag, cred); /* * Make sure the file is still open. In a case the file was closed in * the meantime, clean the lock we acquired using the setlock() call * above, and return the appropriate error. */ rfs4_dbe_lock(sp->rs_dbe); if (sp->rs_closed == TRUE) { cleanlocks(vp, lsp->rls_locker->rl_pid, sysid); rfs4_dbe_unlock(sp->rs_dbe); VN_RELE(vp); return (NFS4ERR_OLD_STATEID); } rfs4_dbe_unlock(sp->rs_dbe); VN_RELE(vp); if (error == 0) { rfs4_dbe_lock(lsp->rls_dbe); next_stateid(&lsp->rls_lockid); rfs4_dbe_unlock(lsp->rls_dbe); } /* * N.B. We map error values to nfsv4 errors. This is differrent * than puterrno4 routine. */ switch (error) { case 0: status = NFS4_OK; break; case EAGAIN: case EACCES: /* Old value */ /* Can only get here if op is OP_LOCK */ ASSERT(resop->resop == OP_LOCK); lres = &resop->nfs_resop4_u.oplock; status = NFS4ERR_DENIED; if (lock_denied(&lres->LOCK4res_u.denied, &flock) == NFS4ERR_EXPIRED) goto retry; break; case ENOLCK: status = NFS4ERR_DELAY; break; case EOVERFLOW: status = NFS4ERR_INVAL; break; case EINVAL: status = NFS4ERR_NOTSUPP; break; default: status = NFS4ERR_SERVERFAULT; break; } return (status); } /*ARGSUSED*/ void rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { LOCK4args *args = &argop->nfs_argop4_u.oplock; LOCK4res *resp = &resop->nfs_resop4_u.oplock; nfsstat4 status; stateid4 *stateid; rfs4_lockowner_t *lo; rfs4_client_t *cp; rfs4_state_t *sp = NULL; rfs4_lo_state_t *lsp = NULL; bool_t ls_sw_held = FALSE; bool_t create = TRUE; bool_t lcreate = TRUE; bool_t dup_lock = FALSE; int rc; DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs, LOCK4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, LOCK4res *, resp); return; } if (args->locker.new_lock_owner) { /* Create a new lockowner for this instance */ open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner; NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner")); stateid = &olo->open_stateid; status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID); if (status != NFS4_OK) { NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Get state failed in lock %d", status)); *cs->statusp = resp->status = status; DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, LOCK4res *, resp); return; } /* Ensure specified filehandle matches */ if (cs->vp != sp->rs_finfo->rf_vp) { rfs4_state_rele(sp); *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, LOCK4res *, resp); return; } /* hold off other access to open_owner while we tinker */ rfs4_sw_enter(&sp->rs_owner->ro_sw); switch (rc = rfs4_check_stateid_seqid(sp, stateid)) { case NFS4_CHECK_STATEID_OLD: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_EXPIRED: *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto end; case NFS4_CHECK_STATEID_UNCONFIRMED: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_CLOSED: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_OKAY: case NFS4_CHECK_STATEID_REPLAY: switch (rfs4_check_olo_seqid(olo->open_seqid, sp->rs_owner, resop)) { case NFS4_CHKSEQ_OKAY: if (rc == NFS4_CHECK_STATEID_OKAY) break; /* * This is replayed stateid; if seqid * matches next expected, then client * is using wrong seqid. */ /* FALLTHROUGH */ case NFS4_CHKSEQ_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; case NFS4_CHKSEQ_REPLAY: /* This is a duplicate LOCK request */ dup_lock = TRUE; /* * For a duplicate we do not want to * create a new lockowner as it should * already exist. * Turn off the lockowner create flag. */ lcreate = FALSE; } break; } lo = rfs4_findlockowner(&olo->lock_owner, &lcreate); if (lo == NULL) { NFS4_DEBUG(rfs4_debug, (CE_NOTE, "rfs4_op_lock: no lock owner")); *cs->statusp = resp->status = NFS4ERR_RESOURCE; goto end; } lsp = rfs4_findlo_state_by_owner(lo, sp, &create); if (lsp == NULL) { rfs4_update_lease(sp->rs_owner->ro_client); /* * Only update theh open_seqid if this is not * a duplicate request */ if (dup_lock == FALSE) { rfs4_update_open_sequence(sp->rs_owner); } NFS4_DEBUG(rfs4_debug, (CE_NOTE, "rfs4_op_lock: no state")); *cs->statusp = resp->status = NFS4ERR_SERVERFAULT; rfs4_update_open_resp(sp->rs_owner, resop, NULL); rfs4_lockowner_rele(lo); goto end; } /* * This is the new_lock_owner branch and the client is * supposed to be associating a new lock_owner with * the open file at this point. If we find that a * lock_owner/state association already exists and a * successful LOCK request was returned to the client, * an error is returned to the client since this is * not appropriate. The client should be using the * existing lock_owner branch. */ if (dup_lock == FALSE && create == FALSE) { if (lsp->rls_lock_completed == TRUE) { *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; rfs4_lockowner_rele(lo); goto end; } } rfs4_update_lease(sp->rs_owner->ro_client); /* * Only update theh open_seqid if this is not * a duplicate request */ if (dup_lock == FALSE) { rfs4_update_open_sequence(sp->rs_owner); } /* * If this is a duplicate lock request, just copy the * previously saved reply and return. */ if (dup_lock == TRUE) { /* verify that lock_seqid's match */ if (lsp->rls_seqid != olo->lock_seqid) { NFS4_DEBUG(rfs4_debug, (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad" "lsp->seqid=%d old->seqid=%d", lsp->rls_seqid, olo->lock_seqid)); *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; } else { rfs4_copy_reply(resop, &lsp->rls_reply); /* * Make sure to copy the just * retrieved reply status into the * overall compound status */ *cs->statusp = resp->status; } rfs4_lockowner_rele(lo); goto end; } rfs4_dbe_lock(lsp->rls_dbe); /* Make sure to update the lock sequence id */ lsp->rls_seqid = olo->lock_seqid; NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid)); /* * This is used to signify the newly created lockowner * stateid and its sequence number. The checks for * sequence number and increment don't occur on the * very first lock request for a lockowner. */ lsp->rls_skip_seqid_check = TRUE; /* hold off other access to lsp while we tinker */ rfs4_sw_enter(&lsp->rls_sw); ls_sw_held = TRUE; rfs4_dbe_unlock(lsp->rls_dbe); rfs4_lockowner_rele(lo); } else { stateid = &args->locker.locker4_u.lock_owner.lock_stateid; /* get lsp and hold the lock on the underlying file struct */ if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { *cs->statusp = resp->status = status; DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, LOCK4res *, resp); return; } create = FALSE; /* We didn't create lsp */ /* Ensure specified filehandle matches */ if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { rfs4_lo_state_rele(lsp, TRUE); *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, LOCK4res *, resp); return; } /* hold off other access to lsp while we tinker */ rfs4_sw_enter(&lsp->rls_sw); ls_sw_held = TRUE; switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { /* * The stateid looks like it was okay (expected to be * the next one) */ case NFS4_CHECK_STATEID_OKAY: /* * The sequence id is now checked. Determine * if this is a replay or if it is in the * expected (next) sequence. In the case of a * replay, there are two replay conditions * that may occur. The first is the normal * condition where a LOCK is done with a * NFS4_OK response and the stateid is * updated. That case is handled below when * the stateid is identified as a REPLAY. The * second is the case where an error is * returned, like NFS4ERR_DENIED, and the * sequence number is updated but the stateid * is not updated. This second case is dealt * with here. So it may seem odd that the * stateid is okay but the sequence id is a * replay but it is okay. */ switch (rfs4_check_lock_seqid( args->locker.locker4_u.lock_owner.lock_seqid, lsp, resop)) { case NFS4_CHKSEQ_REPLAY: if (resp->status != NFS4_OK) { /* * Here is our replay and need * to verify that the last * response was an error. */ *cs->statusp = resp->status; goto end; } /* * This is done since the sequence id * looked like a replay but it didn't * pass our check so a BAD_SEQID is * returned as a result. */ /*FALLTHROUGH*/ case NFS4_CHKSEQ_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; case NFS4_CHKSEQ_OKAY: /* Everything looks okay move ahead */ break; } break; case NFS4_CHECK_STATEID_OLD: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_EXPIRED: *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto end; case NFS4_CHECK_STATEID_CLOSED: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_REPLAY: switch (rfs4_check_lock_seqid( args->locker.locker4_u.lock_owner.lock_seqid, lsp, resop)) { case NFS4_CHKSEQ_OKAY: /* * This is a replayed stateid; if * seqid matches the next expected, * then client is using wrong seqid. */ case NFS4_CHKSEQ_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; case NFS4_CHKSEQ_REPLAY: rfs4_update_lease(lsp->rls_locker->rl_client); *cs->statusp = status = resp->status; goto end; } break; default: ASSERT(FALSE); break; } rfs4_update_lock_sequence(lsp); rfs4_update_lease(lsp->rls_locker->rl_client); } /* * NFS4 only allows locking on regular files, so * verify type of object. */ if (cs->vp->v_type != VREG) { if (cs->vp->v_type == VDIR) status = NFS4ERR_ISDIR; else status = NFS4ERR_INVAL; goto out; } cp = lsp->rls_state->rs_owner->ro_client; if (rfs4_clnt_in_grace(cp) && !args->reclaim) { status = NFS4ERR_GRACE; goto out; } if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) { status = NFS4ERR_NO_GRACE; goto out; } if (!rfs4_clnt_in_grace(cp) && args->reclaim) { status = NFS4ERR_NO_GRACE; goto out; } if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE) cs->deleg = TRUE; status = rfs4_do_lock(lsp, args->locktype, args->offset, args->length, cs->cr, resop); out: lsp->rls_skip_seqid_check = FALSE; *cs->statusp = resp->status = status; if (status == NFS4_OK) { resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid; lsp->rls_lock_completed = TRUE; } /* * Only update the "OPEN" response here if this was a new * lock_owner */ if (sp) rfs4_update_open_resp(sp->rs_owner, resop, NULL); rfs4_update_lock_resp(lsp, resop); end: if (lsp) { if (ls_sw_held) rfs4_sw_exit(&lsp->rls_sw); /* * If an sp obtained, then the lsp does not represent * a lock on the file struct. */ if (sp != NULL) rfs4_lo_state_rele(lsp, FALSE); else rfs4_lo_state_rele(lsp, TRUE); } if (sp) { rfs4_sw_exit(&sp->rs_owner->ro_sw); rfs4_state_rele(sp); } DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs, LOCK4res *, resp); } /* free function for LOCK/LOCKT */ static void lock_denied_free(nfs_resop4 *resop) { LOCK4denied *dp = NULL; switch (resop->resop) { case OP_LOCK: if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED) dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied; break; case OP_LOCKT: if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED) dp = &resop->nfs_resop4_u.oplockt.denied; break; default: break; } if (dp) kmem_free(dp->owner.owner_val, dp->owner.owner_len); } /*ARGSUSED*/ void rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { LOCKU4args *args = &argop->nfs_argop4_u.oplocku; LOCKU4res *resp = &resop->nfs_resop4_u.oplocku; nfsstat4 status; stateid4 *stateid = &args->lock_stateid; rfs4_lo_state_t *lsp; DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs, LOCKU4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, LOCKU4res *, resp); return; } if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) { *cs->statusp = resp->status = status; DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, LOCKU4res *, resp); return; } /* Ensure specified filehandle matches */ if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) { rfs4_lo_state_rele(lsp, TRUE); *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, LOCKU4res *, resp); return; } /* hold off other access to lsp while we tinker */ rfs4_sw_enter(&lsp->rls_sw); switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) { case NFS4_CHECK_STATEID_OKAY: if (rfs4_check_lock_seqid(args->seqid, lsp, resop) != NFS4_CHKSEQ_OKAY) { *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; } break; case NFS4_CHECK_STATEID_OLD: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_STATEID; goto end; case NFS4_CHECK_STATEID_EXPIRED: *cs->statusp = resp->status = NFS4ERR_EXPIRED; goto end; case NFS4_CHECK_STATEID_CLOSED: *cs->statusp = resp->status = NFS4ERR_OLD_STATEID; goto end; case NFS4_CHECK_STATEID_REPLAY: switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) { case NFS4_CHKSEQ_OKAY: /* * This is a replayed stateid; if * seqid matches the next expected, * then client is using wrong seqid. */ case NFS4_CHKSEQ_BAD: *cs->statusp = resp->status = NFS4ERR_BAD_SEQID; goto end; case NFS4_CHKSEQ_REPLAY: rfs4_update_lease(lsp->rls_locker->rl_client); *cs->statusp = status = resp->status; goto end; } break; default: ASSERT(FALSE); break; } rfs4_update_lock_sequence(lsp); rfs4_update_lease(lsp->rls_locker->rl_client); /* * NFS4 only allows locking on regular files, so * verify type of object. */ if (cs->vp->v_type != VREG) { if (cs->vp->v_type == VDIR) status = NFS4ERR_ISDIR; else status = NFS4ERR_INVAL; goto out; } if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) { status = NFS4ERR_GRACE; goto out; } status = rfs4_do_lock(lsp, args->locktype, args->offset, args->length, cs->cr, resop); out: *cs->statusp = resp->status = status; if (status == NFS4_OK) resp->lock_stateid = lsp->rls_lockid.stateid; rfs4_update_lock_resp(lsp, resop); end: rfs4_sw_exit(&lsp->rls_sw); rfs4_lo_state_rele(lsp, TRUE); DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs, LOCKU4res *, resp); } /* * LOCKT is a best effort routine, the client can not be guaranteed that * the status return is still in effect by the time the reply is received. * They are numerous race conditions in this routine, but we are not required * and can not be accurate. */ /*ARGSUSED*/ void rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req, struct compound_state *cs) { LOCKT4args *args = &argop->nfs_argop4_u.oplockt; LOCKT4res *resp = &resop->nfs_resop4_u.oplockt; rfs4_lockowner_t *lo; rfs4_client_t *cp; bool_t create = FALSE; struct flock64 flk; int error; int flag = FREAD | FWRITE; int ltype; length4 posix_length; sysid_t sysid; pid_t pid; DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs, LOCKT4args *, args); if (cs->vp == NULL) { *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE; goto out; } /* * NFS4 only allows locking on regular files, so * verify type of object. */ if (cs->vp->v_type != VREG) { if (cs->vp->v_type == VDIR) *cs->statusp = resp->status = NFS4ERR_ISDIR; else *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } /* * Check out the clientid to ensure the server knows about it * so that we correctly inform the client of a server reboot. */ if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE)) == NULL) { *cs->statusp = resp->status = rfs4_check_clientid(&args->owner.clientid, 0); goto out; } if (rfs4_lease_expired(cp)) { rfs4_client_close(cp); /* * Protocol doesn't allow returning NFS4ERR_STALE as * other operations do on this check so STALE_CLIENTID * is returned instead */ *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID; goto out; } if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) { *cs->statusp = resp->status = NFS4ERR_GRACE; rfs4_client_rele(cp); goto out; } rfs4_client_rele(cp); resp->status = NFS4_OK; switch (args->locktype) { case READ_LT: case READW_LT: ltype = F_RDLCK; break; case WRITE_LT: case WRITEW_LT: ltype = F_WRLCK; break; } posix_length = args->length; /* Check for zero length. To lock to end of file use all ones for V4 */ if (posix_length == 0) { *cs->statusp = resp->status = NFS4ERR_INVAL; goto out; } else if (posix_length == (length4)(~0)) { posix_length = 0; /* Posix to end of file */ } /* Find or create a lockowner */ lo = rfs4_findlockowner(&args->owner, &create); if (lo) { pid = lo->rl_pid; if ((resp->status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK) goto err; } else { pid = 0; sysid = lockt_sysid; } retry: flk.l_type = ltype; flk.l_whence = 0; /* SEEK_SET */ flk.l_start = args->offset; flk.l_len = posix_length; flk.l_sysid = sysid; flk.l_pid = pid; flag |= F_REMOTELOCK; LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk); /* Note that length4 is uint64_t but l_len and l_start are off64_t */ if (flk.l_len < 0 || flk.l_start < 0) { resp->status = NFS4ERR_INVAL; goto err; } error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0, NULL, cs->cr, NULL); /* * N.B. We map error values to nfsv4 errors. This is differrent * than puterrno4 routine. */ switch (error) { case 0: if (flk.l_type == F_UNLCK) resp->status = NFS4_OK; else { if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED) goto retry; resp->status = NFS4ERR_DENIED; } break; case EOVERFLOW: resp->status = NFS4ERR_INVAL; break; case EINVAL: resp->status = NFS4ERR_NOTSUPP; break; default: cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)", error); resp->status = NFS4ERR_SERVERFAULT; break; } err: if (lo) rfs4_lockowner_rele(lo); *cs->statusp = resp->status; out: DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs, LOCKT4res *, resp); } int rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny) { int err; int cmd; vnode_t *vp; struct shrlock shr; struct shr_locowner shr_loco; int fflags = 0; ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); if (sp->rs_closed) return (NFS4ERR_OLD_STATEID); vp = sp->rs_finfo->rf_vp; ASSERT(vp); shr.s_access = shr.s_deny = 0; if (access & OPEN4_SHARE_ACCESS_READ) { fflags |= FREAD; shr.s_access |= F_RDACC; } if (access & OPEN4_SHARE_ACCESS_WRITE) { fflags |= FWRITE; shr.s_access |= F_WRACC; } ASSERT(shr.s_access); if (deny & OPEN4_SHARE_DENY_READ) shr.s_deny |= F_RDDNY; if (deny & OPEN4_SHARE_DENY_WRITE) shr.s_deny |= F_WRDNY; shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; shr_loco.sl_pid = shr.s_pid; shr_loco.sl_id = shr.s_sysid; shr.s_owner = (caddr_t)&shr_loco; shr.s_own_len = sizeof (shr_loco); cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE; err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL); if (err != 0) { if (err == EAGAIN) err = NFS4ERR_SHARE_DENIED; else err = puterrno4(err); return (err); } sp->rs_share_access |= access; sp->rs_share_deny |= deny; return (0); } int rfs4_unshare(rfs4_state_t *sp) { int err; struct shrlock shr; struct shr_locowner shr_loco; ASSERT(rfs4_dbe_islocked(sp->rs_dbe)); if (sp->rs_closed || sp->rs_share_access == 0) return (0); ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID); ASSERT(sp->rs_finfo->rf_vp); shr.s_access = shr.s_deny = 0; shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe); shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt; shr_loco.sl_pid = shr.s_pid; shr_loco.sl_id = shr.s_sysid; shr.s_owner = (caddr_t)&shr_loco; shr.s_own_len = sizeof (shr_loco); err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(), NULL); if (err != 0) { err = puterrno4(err); return (err); } sp->rs_share_access = 0; sp->rs_share_deny = 0; return (0); } static int rdma_setup_read_data4(READ4args *args, READ4res *rok) { struct clist *wcl; count4 count = rok->data_len; int wlist_len; wcl = args->wlist; if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) { return (FALSE); } wcl = args->wlist; rok->wlist_len = wlist_len; rok->wlist = wcl; return (TRUE); } /* tunable to disable server referrals */ int rfs4_no_referrals = 0; /* * Find an NFS record in reparse point data. * Returns 0 for success and <0 or an errno value on failure. */ int vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap) { int err; char *stype, *val; nvlist_t *nvl; nvpair_t *curr; if ((nvl = reparse_init()) == NULL) return (-1); if ((err = reparse_vnode_parse(vp, nvl)) != 0) { reparse_free(nvl); return (err); } curr = NULL; while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) { if ((stype = nvpair_name(curr)) == NULL) { reparse_free(nvl); return (-2); } if (strncasecmp(stype, "NFS", 3) == 0) break; } if ((curr == NULL) || (nvpair_value_string(curr, &val))) { reparse_free(nvl); return (-3); } *nvlp = nvl; *svcp = stype; *datap = val; return (0); } int vn_is_nfs_reparse(vnode_t *vp, cred_t *cr) { nvlist_t *nvl; char *s, *d; if (rfs4_no_referrals != 0) return (B_FALSE); if (vn_is_reparse(vp, cr, NULL) == B_FALSE) return (B_FALSE); if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0) return (B_FALSE); reparse_free(nvl); return (B_TRUE); } /* * There is a user-level copy of this routine in ref_subr.c. * Changes should be kept in sync. */ static int nfs4_create_components(char *path, component4 *comp4) { int slen, plen, ncomp; char *ori_path, *nxtc, buf[MAXNAMELEN]; if (path == NULL) return (0); plen = strlen(path) + 1; /* include the terminator */ ori_path = path; ncomp = 0; /* count number of components in the path */ for (nxtc = path; nxtc < ori_path + plen; nxtc++) { if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') { if ((slen = nxtc - path) == 0) { path = nxtc + 1; continue; } if (comp4 != NULL) { bcopy(path, buf, slen); buf[slen] = '\0'; (void) str_to_utf8(buf, &comp4[ncomp]); } ncomp++; /* 1 valid component */ path = nxtc + 1; } if (*nxtc == '\0' || *nxtc == '\n') break; } return (ncomp); } /* * There is a user-level copy of this routine in ref_subr.c. * Changes should be kept in sync. */ static int make_pathname4(char *path, pathname4 *pathname) { int ncomp; component4 *comp4; if (pathname == NULL) return (0); if (path == NULL) { pathname->pathname4_val = NULL; pathname->pathname4_len = 0; return (0); } /* count number of components to alloc buffer */ if ((ncomp = nfs4_create_components(path, NULL)) == 0) { pathname->pathname4_val = NULL; pathname->pathname4_len = 0; return (0); } comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP); /* copy components into allocated buffer */ ncomp = nfs4_create_components(path, comp4); pathname->pathname4_val = comp4; pathname->pathname4_len = ncomp; return (ncomp); } #define xdr_fs_locations4 xdr_fattr4_fs_locations fs_locations4 * fetch_referral(vnode_t *vp, cred_t *cr) { nvlist_t *nvl; char *stype, *sdata; fs_locations4 *result; char buf[1024]; size_t bufsize; XDR xdr; int err; /* * Check attrs to ensure it's a reparse point */ if (vn_is_reparse(vp, cr, NULL) == B_FALSE) return (NULL); /* * Look for an NFS record and get the type and data */ if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0) return (NULL); /* * With the type and data, upcall to get the referral */ bufsize = sizeof (buf); bzero(buf, sizeof (buf)); err = reparse_kderef((const char *)stype, (const char *)sdata, buf, &bufsize); reparse_free(nvl); DTRACE_PROBE4(nfs4serv__func__referral__upcall, char *, stype, char *, sdata, char *, buf, int, err); if (err) { cmn_err(CE_NOTE, "reparsed daemon not running: unable to get referral (%d)", err); return (NULL); } /* * We get an XDR'ed record back from the kderef call */ xdrmem_create(&xdr, buf, bufsize, XDR_DECODE); result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP); err = xdr_fs_locations4(&xdr, result); XDR_DESTROY(&xdr); if (err != TRUE) { DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail, int, err); return (NULL); } /* * Look at path to recover fs_root, ignoring the leading '/' */ (void) make_pathname4(vp->v_path, &result->fs_root); return (result); } char * build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz) { fs_locations4 *fsl; fs_location4 *fs; char *server, *path, *symbuf; static char *prefix = "/net/"; int i, size, npaths; uint_t len; /* Get the referral */ if ((fsl = fetch_referral(vp, cr)) == NULL) return (NULL); /* Deal with only the first location and first server */ fs = &fsl->locations_val[0]; server = utf8_to_str(&fs->server_val[0], &len, NULL); if (server == NULL) { rfs4_free_fs_locations4(fsl); kmem_free(fsl, sizeof (fs_locations4)); return (NULL); } /* Figure out size for "/net/" + host + /path/path/path + NULL */ size = strlen(prefix) + len; for (i = 0; i < fs->rootpath.pathname4_len; i++) size += fs->rootpath.pathname4_val[i].utf8string_len + 1; /* Allocate the symlink buffer and fill it */ symbuf = kmem_zalloc(size, KM_SLEEP); (void) strcat(symbuf, prefix); (void) strcat(symbuf, server); kmem_free(server, len); npaths = 0; for (i = 0; i < fs->rootpath.pathname4_len; i++) { path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL); if (path == NULL) continue; (void) strcat(symbuf, "/"); (void) strcat(symbuf, path); npaths++; kmem_free(path, len); } rfs4_free_fs_locations4(fsl); kmem_free(fsl, sizeof (fs_locations4)); if (strsz != NULL) *strsz = size; return (symbuf); } /* * Check to see if we have a downrev Solaris client, so that we * can send it a symlink instead of a referral. */ int client_is_downrev(struct svc_req *req) { struct sockaddr *ca; rfs4_clntip_t *ci; bool_t create = FALSE; int is_downrev; ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf; ASSERT(ca); ci = rfs4_find_clntip(ca, &create); if (ci == NULL) return (0); is_downrev = ci->ri_no_referrals; rfs4_dbe_rele(ci->ri_dbe); return (is_downrev); }