/* * 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 (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2016 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2017 by Delphix. All rights reserved. */ /* * General Structures Layout * ------------------------- * * This is a simplified diagram showing the relationship between most of the * main structures. * * +-------------------+ * | SMB_SERVER | * +-------------------+ * | * | * v * +-------------------+ +-------------------+ +-------------------+ * | SESSION |<----->| SESSION |......| SESSION | * +-------------------+ +-------------------+ +-------------------+ * | * | * v * +-------------------+ +-------------------+ +-------------------+ * | USER |<----->| USER |......| USER | * +-------------------+ +-------------------+ +-------------------+ * | * | * v * +-------------------+ +-------------------+ +-------------------+ * | TREE |<----->| TREE |......| TREE | * +-------------------+ +-------------------+ +-------------------+ * | | * | | * | v * | +-------+ +-------+ +-------+ * | | OFILE |<----->| OFILE |......| OFILE | * | +-------+ +-------+ +-------+ * | * | * v * +-------+ +------+ +------+ * | ODIR |<----->| ODIR |......| ODIR | * +-------+ +------+ +------+ * * * Module Interface Overview * ------------------------- * * * +===================================+ * | smbd daemon | * +===================================+ * | | ^ * | | | * User | | | * -----------|--------------|----------------|-------------------------------- * Kernel | | | * | | | * | | | * +=========|==============|================|=================+ * | v v | | * | +-----------+ +--------------------+ +------------------+ | * | | IO | | Kernel Door Server | | User Door Servers| | * | | Interface | | Interface | | Interface | | * | +-----------+ +--------------------+ +------------------+ | * | | | ^ ^ | * | v v | | | +=========+ * | +-----------------------------------+ | | | | * | + SMB Server Management (this file) |<------------------| ZFS | * | +-----------------------------------+ | | | | * | | | | Module | * | +-----------------------------------+ | | | | * | + SMB Server Internal Layers |------+ | +=========+ * | +-----------------------------------+ | * | | * | | * +===========================================================+ * * * Server State Machine * -------------------- * | * | T0 * | * v * +-----------------------------+ * | SMB_SERVER_STATE_CREATED | * +-----------------------------+ * | * | T1 * | * v * +-----------------------------+ * | SMB_SERVER_STATE_CONFIGURED | * +-----------------------------+ * | * | T2 * | * v * +-----------------------------+ * | SMB_SERVER_STATE_RUNNING / | * | SMB_SERVER_STATE_STOPPING | * +-----------------------------+ * | * | T3 * | * v * +-----------------------------+ * | SMB_SERVER_STATE_DELETING | * +-----------------------------+ * | * | * | * v * * States * ------ * * SMB_SERVER_STATE_CREATED * * This is the state of the server just after creation. * * SMB_SERVER_STATE_CONFIGURED * * The server has been configured. * * SMB_SERVER_STATE_RUNNING * * The server has been started. While in this state the threads listening on * the sockets are started. * * When a client establishes a connection the thread listening dispatches * a task with the new session as an argument. If the dispatch fails the new * session context is destroyed. * * SMB_SERVER_STATE_STOPPING * * The threads listening on the NBT and TCP sockets are being terminated. * * * Transitions * ----------- * * Transition T0 * * The daemon smbd triggers its creation by opening the smbsrv device. If * the zone where the daemon lives doesn't have an smb server yet it is * created. * * smb_drv_open() --> smb_server_create() * * Transition T1 * * This transition occurs in smb_server_configure(). It is triggered by the * daemon through an Ioctl. * * smb_drv_ioctl(SMB_IOC_CONFIG) --> smb_server_configure() * * Transition T2 * * This transition occurs in smb_server_start(). It is triggered by the * daemon through an Ioctl. * * smb_drv_ioctl(SMB_IOC_START) --> smb_server_start() * * Transition T3 * * This transition occurs in smb_server_delete(). It is triggered by the * daemon when closing the smbsrv device * * smb_drv_close() --> smb_server_delete() * * Comments * -------- * * This files assumes that there will one SMB server per zone. For now the * smb server works only in global zone. There's nothing in this file preventing * an smb server from being created in a non global zone. That limitation is * enforced in user space. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void smb_server_kstat_init(smb_server_t *); static void smb_server_kstat_fini(smb_server_t *); static void smb_server_timers(smb_thread_t *, void *); static void smb_server_store_cfg(smb_server_t *, smb_ioc_cfg_t *); static void smb_server_shutdown(smb_server_t *); static int smb_server_fsop_start(smb_server_t *); static void smb_server_fsop_stop(smb_server_t *); static void smb_event_cancel(smb_server_t *, uint32_t); static uint32_t smb_event_alloc_txid(void); static void smb_server_disconnect_share(smb_llist_t *, const char *); static void smb_server_enum_users(smb_llist_t *, smb_svcenum_t *); static void smb_server_enum_trees(smb_llist_t *, smb_svcenum_t *); static int smb_server_session_disconnect(smb_llist_t *, const char *, const char *); static int smb_server_fclose(smb_llist_t *, uint32_t); static int smb_server_kstat_update(kstat_t *, int); static int smb_server_legacy_kstat_update(kstat_t *, int); static void smb_server_listener_init(smb_server_t *, smb_listener_daemon_t *, char *, in_port_t, int); static void smb_server_listener_destroy(smb_listener_daemon_t *); static int smb_server_listener_start(smb_listener_daemon_t *); static void smb_server_listener_stop(smb_listener_daemon_t *); static void smb_server_listener(smb_thread_t *, void *); static void smb_server_receiver(void *); static void smb_server_create_session(smb_listener_daemon_t *, ksocket_t); static void smb_server_destroy_session(smb_session_t *); static uint16_t smb_spool_get_fid(smb_server_t *); static boolean_t smb_spool_lookup_doc_byfid(smb_server_t *, uint16_t, smb_kspooldoc_t *); /* * How many "buckets" should our hash tables use? On a "real" server, * make them much larger than the number of CPUs we're likely to have. * On "fksmbd" make it smaller so dtrace logs are shorter. * These must be powers of two. */ #ifdef _KERNEL #define DEFAULT_HASH_NBUCKETS 256 /* real server */ #else #define DEFAULT_HASH_NBUCKETS 16 /* for "fksmbd" */ #endif uint32_t SMB_OFILE_HASH_NBUCKETS = DEFAULT_HASH_NBUCKETS; uint32_t SMB_LEASE_HASH_NBUCKETS = DEFAULT_HASH_NBUCKETS; int smb_event_debug = 0; static smb_llist_t smb_servers; kmem_cache_t *smb_cache_request; kmem_cache_t *smb_cache_session; kmem_cache_t *smb_cache_user; kmem_cache_t *smb_cache_tree; kmem_cache_t *smb_cache_ofile; kmem_cache_t *smb_cache_odir; kmem_cache_t *smb_cache_opipe; kmem_cache_t *smb_cache_event; kmem_cache_t *smb_cache_lock; /* * ***************************************************************************** * **************** Functions called from the device interface ***************** * ***************************************************************************** * * These functions typically have to determine the relevant smb server * to which the call applies. */ /* * How many zones have an SMB server active? */ int smb_server_get_count(void) { return (smb_llist_get_count(&smb_servers)); } /* * smb_server_g_init * * This function must be called from smb_drv_attach(). */ int smb_server_g_init(void) { int rc; if ((rc = smb_vop_init()) != 0) goto errout; if ((rc = smb_fem_init()) != 0) goto errout; smb_kshare_g_init(); smb_codepage_init(); smb_mbc_init(); /* smb_mbc_cache */ smb_node_init(); /* smb_node_cache, lists */ smb2_lease_init(); smb_cache_request = kmem_cache_create("smb_request_cache", sizeof (smb_request_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_session = kmem_cache_create("smb_session_cache", sizeof (smb_session_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_user = kmem_cache_create("smb_user_cache", sizeof (smb_user_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_tree = kmem_cache_create("smb_tree_cache", sizeof (smb_tree_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_ofile = kmem_cache_create("smb_ofile_cache", sizeof (smb_ofile_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_odir = kmem_cache_create("smb_odir_cache", sizeof (smb_odir_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_opipe = kmem_cache_create("smb_opipe_cache", sizeof (smb_opipe_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_event = kmem_cache_create("smb_event_cache", sizeof (smb_event_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_cache_lock = kmem_cache_create("smb_lock_cache", sizeof (smb_lock_t), 8, NULL, NULL, NULL, NULL, NULL, 0); smb_llist_init(); smb_llist_constructor(&smb_servers, sizeof (smb_server_t), offsetof(smb_server_t, sv_lnd)); return (0); errout: smb_fem_fini(); smb_vop_fini(); return (rc); } /* * smb_server_g_fini * * This function must called from smb_drv_detach(). It will fail if servers * still exist. */ void smb_server_g_fini(void) { ASSERT(smb_llist_get_count(&smb_servers) == 0); smb_llist_fini(); kmem_cache_destroy(smb_cache_request); kmem_cache_destroy(smb_cache_session); kmem_cache_destroy(smb_cache_user); kmem_cache_destroy(smb_cache_tree); kmem_cache_destroy(smb_cache_ofile); kmem_cache_destroy(smb_cache_odir); kmem_cache_destroy(smb_cache_opipe); kmem_cache_destroy(smb_cache_event); kmem_cache_destroy(smb_cache_lock); smb2_lease_fini(); smb_node_fini(); smb_mbc_fini(); smb_codepage_fini(); smb_kshare_g_fini(); smb_fem_fini(); smb_vop_fini(); smb_llist_destructor(&smb_servers); } /* * smb_server_create * * This function will fail if there's already a server associated with the * caller's zone. */ int smb_server_create(void) { zoneid_t zid; smb_server_t *sv; zid = getzoneid(); smb_llist_enter(&smb_servers, RW_WRITER); sv = smb_llist_head(&smb_servers); while (sv) { SMB_SERVER_VALID(sv); if (sv->sv_zid == zid) { smb_llist_exit(&smb_servers); return (EPERM); } sv = smb_llist_next(&smb_servers, sv); } sv = kmem_zalloc(sizeof (smb_server_t), KM_SLEEP); sv->sv_magic = SMB_SERVER_MAGIC; sv->sv_state = SMB_SERVER_STATE_CREATED; sv->sv_zid = zid; sv->sv_pid = ddi_get_pid(); mutex_init(&sv->sv_mutex, NULL, MUTEX_DEFAULT, NULL); cv_init(&sv->sv_cv, NULL, CV_DEFAULT, NULL); cv_init(&sv->sp_info.sp_cv, NULL, CV_DEFAULT, NULL); sv->sv_persistid_ht = smb_hash_create(sizeof (smb_ofile_t), offsetof(smb_ofile_t, f_dh_lnd), SMB_OFILE_HASH_NBUCKETS); sv->sv_lease_ht = smb_hash_create(sizeof (smb_lease_t), offsetof(smb_lease_t, ls_lnd), SMB_LEASE_HASH_NBUCKETS); smb_llist_constructor(&sv->sv_session_list, sizeof (smb_session_t), offsetof(smb_session_t, s_lnd)); smb_llist_constructor(&sv->sv_event_list, sizeof (smb_event_t), offsetof(smb_event_t, se_lnd)); smb_llist_constructor(&sv->sp_info.sp_list, sizeof (smb_kspooldoc_t), offsetof(smb_kspooldoc_t, sd_lnd)); smb_llist_constructor(&sv->sp_info.sp_fidlist, sizeof (smb_spoolfid_t), offsetof(smb_spoolfid_t, sf_lnd)); sv->sv_disp_stats1 = kmem_zalloc(SMB_COM_NUM * sizeof (smb_disp_stats_t), KM_SLEEP); sv->sv_disp_stats2 = kmem_zalloc(SMB2__NCMDS * sizeof (smb_disp_stats_t), KM_SLEEP); smb_thread_init(&sv->si_thread_timers, "smb_timers", smb_server_timers, sv, smbsrv_timer_pri); smb_srqueue_init(&sv->sv_srqueue); smb_kdoor_init(sv); smb_kshare_init(sv); smb_server_kstat_init(sv); smb_threshold_init(&sv->sv_ssetup_ct, SMB_SSETUP_CMD, smb_ssetup_threshold, smb_ssetup_timeout); smb_threshold_init(&sv->sv_tcon_ct, SMB_TCON_CMD, smb_tcon_threshold, smb_tcon_timeout); smb_threshold_init(&sv->sv_opipe_ct, SMB_OPIPE_CMD, smb_opipe_threshold, smb_opipe_timeout); smb_llist_insert_tail(&smb_servers, sv); smb_llist_exit(&smb_servers); return (0); } /* * smb_server_delete * * This function will delete the server passed in. It will make sure that all * activity associated that server has ceased before destroying it. */ int smb_server_delete(void) { smb_server_t *sv; int rc; rc = smb_server_lookup(&sv); if (rc != 0) return (rc); mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_RUNNING: sv->sv_state = SMB_SERVER_STATE_STOPPING; mutex_exit(&sv->sv_mutex); smb_server_shutdown(sv); mutex_enter(&sv->sv_mutex); cv_broadcast(&sv->sp_info.sp_cv); sv->sv_state = SMB_SERVER_STATE_DELETING; break; case SMB_SERVER_STATE_STOPPING: sv->sv_state = SMB_SERVER_STATE_DELETING; break; case SMB_SERVER_STATE_CONFIGURED: case SMB_SERVER_STATE_CREATED: sv->sv_state = SMB_SERVER_STATE_DELETING; break; default: SMB_SERVER_STATE_VALID(sv->sv_state); mutex_exit(&sv->sv_mutex); smb_server_release(sv); return (ENOTTY); } ASSERT(sv->sv_state == SMB_SERVER_STATE_DELETING); sv->sv_refcnt--; while (sv->sv_refcnt) cv_wait(&sv->sv_cv, &sv->sv_mutex); mutex_exit(&sv->sv_mutex); smb_llist_enter(&smb_servers, RW_WRITER); smb_llist_remove(&smb_servers, sv); smb_llist_exit(&smb_servers); smb_threshold_fini(&sv->sv_ssetup_ct); smb_threshold_fini(&sv->sv_tcon_ct); smb_threshold_fini(&sv->sv_opipe_ct); smb_server_listener_destroy(&sv->sv_nbt_daemon); smb_server_listener_destroy(&sv->sv_tcp_daemon); rw_destroy(&sv->sv_cfg_lock); smb_server_kstat_fini(sv); smb_kshare_fini(sv); smb_kdoor_fini(sv); smb_llist_destructor(&sv->sv_event_list); smb_llist_destructor(&sv->sv_session_list); kmem_free(sv->sv_disp_stats1, SMB_COM_NUM * sizeof (smb_disp_stats_t)); kmem_free(sv->sv_disp_stats2, SMB2__NCMDS * sizeof (smb_disp_stats_t)); smb_srqueue_destroy(&sv->sv_srqueue); smb_thread_destroy(&sv->si_thread_timers); mutex_destroy(&sv->sv_mutex); smb_hash_destroy(sv->sv_lease_ht); smb_hash_destroy(sv->sv_persistid_ht); cv_destroy(&sv->sv_cv); sv->sv_magic = 0; kmem_free(sv, sizeof (smb_server_t)); return (0); } /* * smb_server_configure */ int smb_server_configure(smb_ioc_cfg_t *ioc) { int rc = 0; smb_server_t *sv; /* * Reality check negotiation token length vs. #define'd maximum. */ if (ioc->negtok_len > SMB_PI_MAX_NEGTOK) return (EINVAL); rc = smb_server_lookup(&sv); if (rc) return (rc); mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_CREATED: smb_server_store_cfg(sv, ioc); sv->sv_state = SMB_SERVER_STATE_CONFIGURED; break; case SMB_SERVER_STATE_CONFIGURED: smb_server_store_cfg(sv, ioc); break; case SMB_SERVER_STATE_RUNNING: case SMB_SERVER_STATE_STOPPING: rw_enter(&sv->sv_cfg_lock, RW_WRITER); smb_server_store_cfg(sv, ioc); rw_exit(&sv->sv_cfg_lock); break; default: SMB_SERVER_STATE_VALID(sv->sv_state); rc = EFAULT; break; } mutex_exit(&sv->sv_mutex); smb_server_release(sv); return (rc); } /* * smb_server_start */ int smb_server_start(smb_ioc_start_t *ioc) { int rc = 0; int family; smb_server_t *sv; rc = smb_server_lookup(&sv); if (rc) return (rc); mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_CONFIGURED: if ((rc = smb_server_fsop_start(sv)) != 0) break; if ((rc = smb_kshare_start(sv)) != 0) break; /* * NB: the proc passed here has to be a "system" one. * Normally that's p0, or the NGZ eqivalent. */ sv->sv_worker_pool = taskq_create_proc("smb_workers", sv->sv_cfg.skc_maxworkers, smbsrv_worker_pri, sv->sv_cfg.skc_maxworkers, INT_MAX, curzone->zone_zsched, TASKQ_DYNAMIC); sv->sv_receiver_pool = taskq_create_proc("smb_receivers", sv->sv_cfg.skc_maxconnections, smbsrv_receive_pri, sv->sv_cfg.skc_maxconnections, INT_MAX, curzone->zone_zsched, TASKQ_DYNAMIC); sv->sv_session = smb_session_create(NULL, 0, sv, 0); if (sv->sv_worker_pool == NULL || sv->sv_session == NULL) { rc = ENOMEM; break; } #ifdef _KERNEL ASSERT(sv->sv_lmshrd == NULL); sv->sv_lmshrd = smb_kshare_door_init(ioc->lmshrd); if (sv->sv_lmshrd == NULL) break; if ((rc = smb_kdoor_open(sv, ioc->udoor)) != 0) { cmn_err(CE_WARN, "Cannot open smbd door"); break; } #else /* _KERNEL */ /* Fake kernel does not use the kshare_door */ fksmb_kdoor_open(sv, ioc->udoor_func); #endif /* _KERNEL */ if ((rc = smb_thread_start(&sv->si_thread_timers)) != 0) break; family = AF_INET; smb_server_listener_init(sv, &sv->sv_nbt_daemon, "smb_nbt_listener", IPPORT_NETBIOS_SSN, family); if (sv->sv_cfg.skc_ipv6_enable) family = AF_INET6; smb_server_listener_init(sv, &sv->sv_tcp_daemon, "smb_tcp_listener", IPPORT_SMB, family); rc = smb_server_listener_start(&sv->sv_tcp_daemon); if (rc != 0) break; if (sv->sv_cfg.skc_netbios_enable) (void) smb_server_listener_start(&sv->sv_nbt_daemon); sv->sv_state = SMB_SERVER_STATE_RUNNING; sv->sv_start_time = gethrtime(); mutex_exit(&sv->sv_mutex); smb_server_release(sv); smb_export_start(sv); return (0); default: SMB_SERVER_STATE_VALID(sv->sv_state); mutex_exit(&sv->sv_mutex); smb_server_release(sv); return (ENOTTY); } mutex_exit(&sv->sv_mutex); smb_server_shutdown(sv); smb_server_release(sv); return (rc); } /* * An smbd is shutting down. */ int smb_server_stop(void) { smb_server_t *sv; int rc; if ((rc = smb_server_lookup(&sv)) != 0) return (rc); mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_RUNNING: sv->sv_state = SMB_SERVER_STATE_STOPPING; mutex_exit(&sv->sv_mutex); smb_server_shutdown(sv); mutex_enter(&sv->sv_mutex); cv_broadcast(&sv->sp_info.sp_cv); break; default: SMB_SERVER_STATE_VALID(sv->sv_state); break; } mutex_exit(&sv->sv_mutex); smb_server_release(sv); return (0); } boolean_t smb_server_is_stopping(smb_server_t *sv) { boolean_t status; SMB_SERVER_VALID(sv); mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_STOPPING: case SMB_SERVER_STATE_DELETING: status = B_TRUE; break; default: status = B_FALSE; break; } mutex_exit(&sv->sv_mutex); return (status); } void smb_server_cancel_event(smb_server_t *sv, uint32_t txid) { smb_event_cancel(sv, txid); } int smb_server_notify_event(smb_ioc_event_t *ioc) { smb_server_t *sv; int rc; if ((rc = smb_server_lookup(&sv)) == 0) { smb_event_notify(sv, ioc->txid); smb_server_release(sv); } return (rc); } /* * smb_server_spooldoc * * Waits for print file close broadcast. * Gets the head of the fid list, * then searches the spooldoc list and returns * this info via the ioctl to user land. * * rc - 0 success */ int smb_server_spooldoc(smb_ioc_spooldoc_t *ioc) { smb_server_t *sv; int rc; smb_kspooldoc_t *spdoc; uint16_t fid; if ((rc = smb_server_lookup(&sv)) != 0) return (rc); if (sv->sv_cfg.skc_print_enable == 0) { rc = ENOTTY; goto out; } mutex_enter(&sv->sv_mutex); for (;;) { if (sv->sv_state != SMB_SERVER_STATE_RUNNING) { rc = ECANCELED; break; } if ((fid = smb_spool_get_fid(sv)) != 0) { rc = 0; break; } if (cv_wait_sig(&sv->sp_info.sp_cv, &sv->sv_mutex) == 0) { rc = EINTR; break; } } mutex_exit(&sv->sv_mutex); if (rc != 0) goto out; spdoc = kmem_zalloc(sizeof (*spdoc), KM_SLEEP); if (smb_spool_lookup_doc_byfid(sv, fid, spdoc)) { ioc->spool_num = spdoc->sd_spool_num; ioc->ipaddr = spdoc->sd_ipaddr; (void) strlcpy(ioc->path, spdoc->sd_path, MAXPATHLEN); (void) strlcpy(ioc->username, spdoc->sd_username, MAXNAMELEN); } else { /* Did not find that print job. */ rc = EAGAIN; } kmem_free(spdoc, sizeof (*spdoc)); out: smb_server_release(sv); return (rc); } int smb_server_set_gmtoff(smb_ioc_gmt_t *ioc) { int rc; smb_server_t *sv; if ((rc = smb_server_lookup(&sv)) == 0) { sv->si_gmtoff = ioc->offset; smb_server_release(sv); } return (rc); } int smb_server_numopen(smb_ioc_opennum_t *ioc) { smb_server_t *sv; int rc; if ((rc = smb_server_lookup(&sv)) == 0) { ioc->open_users = sv->sv_users; ioc->open_trees = sv->sv_trees; ioc->open_files = sv->sv_files + sv->sv_pipes; smb_server_release(sv); } return (rc); } /* * Enumerate objects within the server. The svcenum provides the * enumeration context, i.e. what the caller want to get back. */ int smb_server_enum(smb_ioc_svcenum_t *ioc) { smb_svcenum_t *svcenum = &ioc->svcenum; smb_server_t *sv; int rc; /* * Reality check that the buffer-length insize the enum doesn't * overrun the ioctl's total length. */ if (svcenum->se_buflen + sizeof (*ioc) > ioc->hdr.len) return (EINVAL); if ((rc = smb_server_lookup(&sv)) != 0) return (rc); svcenum->se_bavail = svcenum->se_buflen; svcenum->se_bused = 0; svcenum->se_nitems = 0; switch (svcenum->se_type) { case SMB_SVCENUM_TYPE_USER: smb_server_enum_users(&sv->sv_session_list, svcenum); break; case SMB_SVCENUM_TYPE_TREE: case SMB_SVCENUM_TYPE_FILE: smb_server_enum_trees(&sv->sv_session_list, svcenum); break; default: rc = EINVAL; } smb_server_release(sv); return (rc); } /* * Look for sessions to disconnect by client and user name. */ int smb_server_session_close(smb_ioc_session_t *ioc) { smb_llist_t *ll; smb_server_t *sv; int cnt; int rc; if ((rc = smb_server_lookup(&sv)) != 0) return (rc); ll = &sv->sv_session_list; cnt = smb_server_session_disconnect(ll, ioc->client, ioc->username); smb_server_release(sv); if (cnt == 0) return (ENOENT); return (0); } /* * Close a file by uniqid. */ int smb_server_file_close(smb_ioc_fileid_t *ioc) { uint32_t uniqid = ioc->uniqid; smb_llist_t *ll; smb_server_t *sv; int rc; if ((rc = smb_server_lookup(&sv)) != 0) return (rc); ll = &sv->sv_session_list; rc = smb_server_fclose(ll, uniqid); smb_server_release(sv); return (rc); } /* * These functions determine the relevant smb server to which the call apply. */ uint32_t smb_server_get_session_count(smb_server_t *sv) { uint32_t counter = 0; counter = smb_llist_get_count(&sv->sv_session_list); return (counter); } /* * Gets the vnode of the specified share path. * * A hold on the returned vnode pointer is taken so the caller * must call VN_RELE. */ int smb_server_sharevp(smb_server_t *sv, const char *shr_path, vnode_t **vp) { smb_request_t *sr; smb_node_t *fnode = NULL; smb_node_t *dnode; char last_comp[MAXNAMELEN]; int rc = 0; ASSERT(shr_path); mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_RUNNING: break; default: mutex_exit(&sv->sv_mutex); return (ENOTACTIVE); } mutex_exit(&sv->sv_mutex); if ((sr = smb_request_alloc(sv->sv_session, 0)) == NULL) { return (ENOTCONN); } sr->user_cr = zone_kcred(); rc = smb_pathname_reduce(sr, sr->user_cr, shr_path, NULL, NULL, &dnode, last_comp); if (rc == 0) { rc = smb_fsop_lookup(sr, sr->user_cr, SMB_FOLLOW_LINKS, sv->si_root_smb_node, dnode, last_comp, &fnode); smb_node_release(dnode); } smb_request_free(sr); if (rc != 0) return (rc); ASSERT(fnode->vp && fnode->vp->v_vfsp); VN_HOLD(fnode->vp); *vp = fnode->vp; smb_node_release(fnode); return (0); } #ifdef _KERNEL /* * This is a special interface that will be utilized by ZFS to cause a share to * be added/removed. * * arg is either a lmshare_info_t or share_name from userspace. * It will need to be copied into the kernel. It is lmshare_info_t * for add operations and share_name for delete operations. */ int smb_server_share(void *arg, boolean_t add_share) { smb_server_t *sv; int rc; if ((rc = smb_server_lookup(&sv)) == 0) { mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_RUNNING: mutex_exit(&sv->sv_mutex); (void) smb_kshare_upcall(sv->sv_lmshrd, arg, add_share); break; default: mutex_exit(&sv->sv_mutex); break; } smb_server_release(sv); } return (rc); } #endif /* _KERNEL */ int smb_server_unshare(const char *sharename) { smb_server_t *sv; smb_llist_t *ll; int rc; if ((rc = smb_server_lookup(&sv))) return (rc); mutex_enter(&sv->sv_mutex); switch (sv->sv_state) { case SMB_SERVER_STATE_RUNNING: case SMB_SERVER_STATE_STOPPING: break; default: mutex_exit(&sv->sv_mutex); smb_server_release(sv); return (ENOTACTIVE); } mutex_exit(&sv->sv_mutex); ll = &sv->sv_session_list; smb_server_disconnect_share(ll, sharename); smb_server_release(sv); return (0); } /* * Disconnect the specified share. * Typically called when a share has been removed. */ static void smb_server_disconnect_share(smb_llist_t *ll, const char *sharename) { smb_session_t *session; smb_llist_enter(ll, RW_READER); session = smb_llist_head(ll); while (session) { SMB_SESSION_VALID(session); smb_rwx_rwenter(&session->s_lock, RW_READER); switch (session->s_state) { case SMB_SESSION_STATE_NEGOTIATED: smb_rwx_rwexit(&session->s_lock); smb_session_disconnect_share(session, sharename); break; default: smb_rwx_rwexit(&session->s_lock); break; } session = smb_llist_next(ll, session); } smb_llist_exit(ll); } /* * ***************************************************************************** * **************** Functions called from the internal layers ****************** * ***************************************************************************** * * These functions are provided the relevant smb server by the caller. */ void smb_server_get_cfg(smb_server_t *sv, smb_kmod_cfg_t *cfg) { rw_enter(&sv->sv_cfg_lock, RW_READER); bcopy(&sv->sv_cfg, cfg, sizeof (*cfg)); rw_exit(&sv->sv_cfg_lock); } /* * */ void smb_server_inc_nbt_sess(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_inc_32(&sv->sv_nbt_sess); } void smb_server_dec_nbt_sess(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_dec_32(&sv->sv_nbt_sess); } void smb_server_inc_tcp_sess(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_inc_32(&sv->sv_tcp_sess); } void smb_server_dec_tcp_sess(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_dec_32(&sv->sv_tcp_sess); } void smb_server_inc_users(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_inc_32(&sv->sv_users); } void smb_server_dec_users(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_dec_32(&sv->sv_users); } void smb_server_inc_trees(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_inc_32(&sv->sv_trees); } void smb_server_dec_trees(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_dec_32(&sv->sv_trees); } void smb_server_inc_files(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_inc_32(&sv->sv_files); } void smb_server_dec_files(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_dec_32(&sv->sv_files); } void smb_server_inc_pipes(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_inc_32(&sv->sv_pipes); } void smb_server_dec_pipes(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_dec_32(&sv->sv_pipes); } void smb_server_add_rxb(smb_server_t *sv, int64_t value) { SMB_SERVER_VALID(sv); atomic_add_64(&sv->sv_rxb, value); } void smb_server_add_txb(smb_server_t *sv, int64_t value) { SMB_SERVER_VALID(sv); atomic_add_64(&sv->sv_txb, value); } void smb_server_inc_req(smb_server_t *sv) { SMB_SERVER_VALID(sv); atomic_inc_64(&sv->sv_nreq); } /* * ***************************************************************************** * *************************** Static Functions ******************************** * ***************************************************************************** */ static void smb_server_timers(smb_thread_t *thread, void *arg) { smb_server_t *sv = (smb_server_t *)arg; ASSERT(sv != NULL); /* * This kills old inactive sessions and expired durable * handles. The session code expects one call per minute. */ while (smb_thread_continue_timedwait(thread, 60 /* Seconds */)) { if (sv->sv_cfg.skc_keepalive != 0) smb_session_timers(sv); smb2_durable_timers(sv); } } /* * smb_server_kstat_init */ static void smb_server_kstat_init(smb_server_t *sv) { sv->sv_ksp = kstat_create_zone(SMBSRV_KSTAT_MODULE, 0, SMBSRV_KSTAT_STATISTICS, SMBSRV_KSTAT_CLASS, KSTAT_TYPE_RAW, sizeof (smbsrv_kstats_t), 0, sv->sv_zid); if (sv->sv_ksp != NULL) { sv->sv_ksp->ks_update = smb_server_kstat_update; sv->sv_ksp->ks_private = sv; ((smbsrv_kstats_t *)sv->sv_ksp->ks_data)->ks_start_time = sv->sv_start_time; smb_dispatch_stats_init(sv); smb2_dispatch_stats_init(sv); kstat_install(sv->sv_ksp); } else { cmn_err(CE_WARN, "SMB Server: Statistics unavailable"); } sv->sv_legacy_ksp = kstat_create_zone(SMBSRV_KSTAT_MODULE, 0, SMBSRV_KSTAT_NAME, SMBSRV_KSTAT_CLASS, KSTAT_TYPE_NAMED, sizeof (smb_server_legacy_kstat_t) / sizeof (kstat_named_t), 0, sv->sv_zid); if (sv->sv_legacy_ksp != NULL) { smb_server_legacy_kstat_t *ksd; ksd = sv->sv_legacy_ksp->ks_data; (void) strlcpy(ksd->ls_files.name, "open_files", sizeof (ksd->ls_files.name)); ksd->ls_files.data_type = KSTAT_DATA_UINT32; (void) strlcpy(ksd->ls_trees.name, "connections", sizeof (ksd->ls_trees.name)); ksd->ls_trees.data_type = KSTAT_DATA_UINT32; (void) strlcpy(ksd->ls_users.name, "connections", sizeof (ksd->ls_users.name)); ksd->ls_users.data_type = KSTAT_DATA_UINT32; mutex_init(&sv->sv_legacy_ksmtx, NULL, MUTEX_DEFAULT, NULL); sv->sv_legacy_ksp->ks_lock = &sv->sv_legacy_ksmtx; sv->sv_legacy_ksp->ks_update = smb_server_legacy_kstat_update; kstat_install(sv->sv_legacy_ksp); } } /* * smb_server_kstat_fini */ static void smb_server_kstat_fini(smb_server_t *sv) { if (sv->sv_legacy_ksp != NULL) { kstat_delete(sv->sv_legacy_ksp); mutex_destroy(&sv->sv_legacy_ksmtx); sv->sv_legacy_ksp = NULL; } if (sv->sv_ksp != NULL) { kstat_delete(sv->sv_ksp); sv->sv_ksp = NULL; smb_dispatch_stats_fini(sv); smb2_dispatch_stats_fini(sv); } } /* * smb_server_kstat_update */ static int smb_server_kstat_update(kstat_t *ksp, int rw) { smb_server_t *sv; smbsrv_kstats_t *ksd; if (rw == KSTAT_READ) { sv = ksp->ks_private; SMB_SERVER_VALID(sv); ksd = (smbsrv_kstats_t *)ksp->ks_data; /* * Counters */ ksd->ks_nbt_sess = sv->sv_nbt_sess; ksd->ks_tcp_sess = sv->sv_tcp_sess; ksd->ks_users = sv->sv_users; ksd->ks_trees = sv->sv_trees; ksd->ks_files = sv->sv_files; ksd->ks_pipes = sv->sv_pipes; /* * Throughput */ ksd->ks_txb = sv->sv_txb; ksd->ks_rxb = sv->sv_rxb; ksd->ks_nreq = sv->sv_nreq; /* * Busyness */ ksd->ks_maxreqs = sv->sv_cfg.skc_maxworkers; smb_srqueue_update(&sv->sv_srqueue, &ksd->ks_utilization); /* * Latency & Throughput of the requests */ smb_dispatch_stats_update(sv, ksd->ks_reqs1, 0, SMB_COM_NUM); smb2_dispatch_stats_update(sv, ksd->ks_reqs2, 0, SMB2__NCMDS); return (0); } if (rw == KSTAT_WRITE) return (EACCES); return (EIO); } static int smb_server_legacy_kstat_update(kstat_t *ksp, int rw) { smb_server_t *sv; smb_server_legacy_kstat_t *ksd; int rc; switch (rw) { case KSTAT_WRITE: rc = EACCES; break; case KSTAT_READ: if (!smb_server_lookup(&sv)) { ASSERT(MUTEX_HELD(ksp->ks_lock)); ASSERT(sv->sv_legacy_ksp == ksp); ksd = (smb_server_legacy_kstat_t *)ksp->ks_data; ksd->ls_files.value.ui32 = sv->sv_files + sv->sv_pipes; ksd->ls_trees.value.ui32 = sv->sv_trees; ksd->ls_users.value.ui32 = sv->sv_users; smb_server_release(sv); rc = 0; break; } /* FALLTHROUGH */ default: rc = EIO; break; } return (rc); } /* * smb_server_shutdown */ static void smb_server_shutdown(smb_server_t *sv) { smb_llist_t *sl = &sv->sv_session_list; smb_session_t *session; clock_t time; SMB_SERVER_VALID(sv); /* * Stop the listeners first, so we don't get any more * new work while we're trying to shut down. */ smb_server_listener_stop(&sv->sv_nbt_daemon); smb_server_listener_stop(&sv->sv_tcp_daemon); smb_thread_stop(&sv->si_thread_timers); /* Disconnect all of the sessions */ smb_llist_enter(sl, RW_READER); session = smb_llist_head(sl); while (session != NULL) { smb_session_disconnect(session); session = smb_llist_next(sl, session); } smb_llist_exit(sl); /* * Wake up any threads we might have blocked. * Must precede kdoor_close etc. because those will * wait for such threads to get out. */ smb_event_cancel(sv, 0); smb_threshold_wake_all(&sv->sv_ssetup_ct); smb_threshold_wake_all(&sv->sv_tcon_ct); smb_threshold_wake_all(&sv->sv_opipe_ct); /* * Wait for the session list to empty. * (cv_signal in smb_server_destroy_session) * * This should not take long, but if there are any leaked * references to ofiles, trees, or users, there could be a * session hanging around. If that happens, the ll_count * never gets to zero and we'll never get the sv_signal. * Defend against that problem using timed wait, then * complain if we find sessions left over and continue * with shutdown in spite of any leaked sessions. * That's better than a server that won't reboot. */ time = SEC_TO_TICK(10) + ddi_get_lbolt(); mutex_enter(&sv->sv_mutex); while (sv->sv_session_list.ll_count != 0) { if (cv_timedwait(&sv->sv_cv, &sv->sv_mutex, time) < 0) break; } mutex_exit(&sv->sv_mutex); #ifdef DEBUG if (sv->sv_session_list.ll_count != 0) { cmn_err(CE_NOTE, "shutdown leaked sessions"); debug_enter("shutdown leaked sessions"); } #endif /* * Clean out any durable handles. After this we should * have no ofiles remaining (and no more oplock breaks). */ smb2_dh_shutdown(sv); smb_kdoor_close(sv); #ifdef _KERNEL smb_kshare_door_fini(sv->sv_lmshrd); #endif /* _KERNEL */ sv->sv_lmshrd = NULL; smb_export_stop(sv); smb_kshare_stop(sv); /* * Both kshare and the oplock break sub-systems may have * taskq jobs on the spcial "server" session, until we've * closed all ofiles and stopped the kshare exporter. * Now it's safe to destroy the server session, but first * wait for any requests on it to finish. Note that for * normal sessions, this happens in smb_session_cancel, * but that's not called for the server session. */ if (sv->sv_session != NULL) { smb_slist_wait_for_empty(&sv->sv_session->s_req_list); smb_session_delete(sv->sv_session); sv->sv_session = NULL; } if (sv->sv_receiver_pool != NULL) { taskq_destroy(sv->sv_receiver_pool); sv->sv_receiver_pool = NULL; } if (sv->sv_worker_pool != NULL) { taskq_destroy(sv->sv_worker_pool); sv->sv_worker_pool = NULL; } smb_server_fsop_stop(sv); } /* * smb_server_listener_init * * Initializes listener contexts. */ static void smb_server_listener_init( smb_server_t *sv, smb_listener_daemon_t *ld, char *name, in_port_t port, int family) { ASSERT(ld->ld_magic != SMB_LISTENER_MAGIC); bzero(ld, sizeof (*ld)); ld->ld_sv = sv; ld->ld_family = family; ld->ld_port = port; if (family == AF_INET) { ld->ld_sin.sin_family = (uint32_t)family; ld->ld_sin.sin_port = htons(port); ld->ld_sin.sin_addr.s_addr = htonl(INADDR_ANY); } else { ld->ld_sin6.sin6_family = (uint32_t)family; ld->ld_sin6.sin6_port = htons(port); (void) memset(&ld->ld_sin6.sin6_addr.s6_addr, 0, sizeof (ld->ld_sin6.sin6_addr.s6_addr)); } smb_thread_init(&ld->ld_thread, name, smb_server_listener, ld, smbsrv_listen_pri); ld->ld_magic = SMB_LISTENER_MAGIC; } /* * smb_server_listener_destroy * * Destroyes listener contexts. */ static void smb_server_listener_destroy(smb_listener_daemon_t *ld) { /* * Note that if startup fails early, we can legitimately * get here with an all-zeros object. */ if (ld->ld_magic == 0) return; SMB_LISTENER_VALID(ld); ASSERT(ld->ld_so == NULL); smb_thread_destroy(&ld->ld_thread); ld->ld_magic = 0; } /* * smb_server_listener_start * * Starts the listener associated with the context passed in. * * Return: 0 Success * not 0 Failure */ static int smb_server_listener_start(smb_listener_daemon_t *ld) { int rc; uint32_t on; uint32_t off; SMB_LISTENER_VALID(ld); if (ld->ld_so != NULL) return (EINVAL); ld->ld_so = smb_socreate(ld->ld_family, SOCK_STREAM, 0); if (ld->ld_so == NULL) { cmn_err(CE_WARN, "port %d: socket create failed", ld->ld_port); return (ENOMEM); } off = 0; (void) ksocket_setsockopt(ld->ld_so, SOL_SOCKET, SO_MAC_EXEMPT, &off, sizeof (off), CRED()); on = 1; (void) ksocket_setsockopt(ld->ld_so, SOL_SOCKET, SO_REUSEADDR, &on, sizeof (on), CRED()); if (ld->ld_family == AF_INET) { rc = ksocket_bind(ld->ld_so, (struct sockaddr *)&ld->ld_sin, sizeof (ld->ld_sin), CRED()); } else { rc = ksocket_bind(ld->ld_so, (struct sockaddr *)&ld->ld_sin6, sizeof (ld->ld_sin6), CRED()); } if (rc != 0) { cmn_err(CE_WARN, "port %d: bind failed", ld->ld_port); return (rc); } rc = ksocket_listen(ld->ld_so, 20, CRED()); if (rc < 0) { cmn_err(CE_WARN, "port %d: listen failed", ld->ld_port); return (rc); } ksocket_hold(ld->ld_so); rc = smb_thread_start(&ld->ld_thread); if (rc != 0) { ksocket_rele(ld->ld_so); cmn_err(CE_WARN, "port %d: listener failed to start", ld->ld_port); return (rc); } return (0); } /* * smb_server_listener_stop * * Stops the listener associated with the context passed in. */ static void smb_server_listener_stop(smb_listener_daemon_t *ld) { SMB_LISTENER_VALID(ld); if (ld->ld_so != NULL) { smb_soshutdown(ld->ld_so); smb_sodestroy(ld->ld_so); smb_thread_stop(&ld->ld_thread); ld->ld_so = NULL; } } /* * smb_server_listener * * Entry point of the listeners. */ static void smb_server_listener(smb_thread_t *thread, void *arg) { _NOTE(ARGUNUSED(thread)) smb_listener_daemon_t *ld; ksocket_t s_so; int on; int txbuf_size; ld = (smb_listener_daemon_t *)arg; SMB_LISTENER_VALID(ld); DTRACE_PROBE1(so__wait__accept, struct sonode *, ld->ld_so); for (;;) { int ret = ksocket_accept(ld->ld_so, NULL, NULL, &s_so, CRED()); switch (ret) { case 0: break; case ECONNABORTED: continue; case EINTR: case EBADF: /* libfakekernel */ goto out; default: cmn_err(CE_WARN, "smb_server_listener: ksocket_accept(%d)", ret); goto out; } DTRACE_PROBE1(so__accept, struct sonode *, s_so); on = 1; (void) ksocket_setsockopt(s_so, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on), CRED()); on = 1; (void) ksocket_setsockopt(s_so, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof (on), CRED()); txbuf_size = 128*1024; (void) ksocket_setsockopt(s_so, SOL_SOCKET, SO_SNDBUF, (const void *)&txbuf_size, sizeof (txbuf_size), CRED()); /* * Create a session for this connection. */ smb_server_create_session(ld, s_so); } out: ksocket_rele(ld->ld_so); } /* * smb_server_receiver * * Entry point of the receiver threads. * Also does cleanup when socket disconnected. */ static void smb_server_receiver(void *arg) { smb_session_t *session; session = (smb_session_t *)arg; /* We stay in here until socket disconnect. */ smb_session_receiver(session); ASSERT(session->s_state == SMB_SESSION_STATE_SHUTDOWN); smb_server_destroy_session(session); } /* * smb_server_lookup * * This function finds the server associated with the zone of the * caller. Note: requires a fix in the dynamic taskq code: * 1501 taskq_create_proc ... TQ_DYNAMIC puts tasks in p0 */ int smb_server_lookup(smb_server_t **psv) { zoneid_t zid; smb_server_t *sv; zid = getzoneid(); smb_llist_enter(&smb_servers, RW_READER); sv = smb_llist_head(&smb_servers); while (sv) { SMB_SERVER_VALID(sv); if (sv->sv_zid == zid) { mutex_enter(&sv->sv_mutex); if (sv->sv_state != SMB_SERVER_STATE_DELETING) { sv->sv_refcnt++; mutex_exit(&sv->sv_mutex); smb_llist_exit(&smb_servers); *psv = sv; return (0); } mutex_exit(&sv->sv_mutex); break; } sv = smb_llist_next(&smb_servers, sv); } smb_llist_exit(&smb_servers); return (EPERM); } /* * smb_server_release * * This function decrements the reference count of the server and signals its * condition variable if the state of the server is SMB_SERVER_STATE_DELETING. */ void smb_server_release(smb_server_t *sv) { SMB_SERVER_VALID(sv); mutex_enter(&sv->sv_mutex); ASSERT(sv->sv_refcnt); sv->sv_refcnt--; if ((sv->sv_refcnt == 0) && (sv->sv_state == SMB_SERVER_STATE_DELETING)) cv_signal(&sv->sv_cv); mutex_exit(&sv->sv_mutex); } /* * Enumerate the users associated with a session list. */ static void smb_server_enum_users(smb_llist_t *ll, smb_svcenum_t *svcenum) { smb_session_t *sn; smb_llist_t *ulist; smb_user_t *user; int rc = 0; smb_llist_enter(ll, RW_READER); sn = smb_llist_head(ll); while (sn != NULL) { SMB_SESSION_VALID(sn); ulist = &sn->s_user_list; smb_llist_enter(ulist, RW_READER); user = smb_llist_head(ulist); while (user != NULL) { if (smb_user_hold(user)) { rc = smb_user_enum(user, svcenum); smb_user_release(user); if (rc != 0) break; } user = smb_llist_next(ulist, user); } smb_llist_exit(ulist); if (rc != 0) break; sn = smb_llist_next(ll, sn); } smb_llist_exit(ll); } /* * Enumerate the trees/files associated with a session list. */ static void smb_server_enum_trees(smb_llist_t *ll, smb_svcenum_t *svcenum) { smb_session_t *sn; smb_llist_t *tlist; smb_tree_t *tree; int rc = 0; smb_llist_enter(ll, RW_READER); sn = smb_llist_head(ll); while (sn != NULL) { SMB_SESSION_VALID(sn); tlist = &sn->s_tree_list; smb_llist_enter(tlist, RW_READER); tree = smb_llist_head(tlist); while (tree != NULL) { if (smb_tree_hold(tree)) { rc = smb_tree_enum(tree, svcenum); smb_tree_release(tree); if (rc != 0) break; } tree = smb_llist_next(tlist, tree); } smb_llist_exit(tlist); if (rc != 0) break; sn = smb_llist_next(ll, sn); } smb_llist_exit(ll); } /* * Disconnect sessions associated with the specified client and username. * Empty strings are treated as wildcards. */ static int smb_server_session_disconnect(smb_llist_t *ll, const char *client, const char *name) { smb_session_t *sn; smb_llist_t *ulist; smb_user_t *user; int count = 0; smb_llist_enter(ll, RW_READER); for (sn = smb_llist_head(ll); sn != NULL; sn = smb_llist_next(ll, sn)) { SMB_SESSION_VALID(sn); if (*client != '\0' && !smb_session_isclient(sn, client)) continue; ulist = &sn->s_user_list; smb_llist_enter(ulist, RW_READER); for (user = smb_llist_head(ulist); user != NULL; user = smb_llist_next(ulist, user)) { SMB_USER_VALID(user); if (*name != '\0' && !smb_user_namecmp(user, name)) continue; if (smb_user_hold(user)) { smb_user_logoff(user); smb_user_release(user); count++; } } smb_llist_exit(ulist); } smb_llist_exit(ll); return (count); } /* * Close a file by its unique id. */ static int smb_server_fclose(smb_llist_t *ll, uint32_t uniqid) { smb_session_t *sn; smb_llist_t *tlist; smb_tree_t *tree; int rc = ENOENT; smb_llist_enter(ll, RW_READER); sn = smb_llist_head(ll); while ((sn != NULL) && (rc == ENOENT)) { SMB_SESSION_VALID(sn); tlist = &sn->s_tree_list; smb_llist_enter(tlist, RW_READER); tree = smb_llist_head(tlist); while ((tree != NULL) && (rc == ENOENT)) { if (smb_tree_hold(tree)) { rc = smb_tree_fclose(tree, uniqid); smb_tree_release(tree); } tree = smb_llist_next(tlist, tree); } smb_llist_exit(tlist); sn = smb_llist_next(ll, sn); } smb_llist_exit(ll); return (rc); } /* * This is used by SMB2 session setup to logoff a previous session, * so it can force a logoff that we haven't noticed yet. * This is not called frequently, so we just walk the list of * connections searching for the user. */ void smb_server_logoff_ssnid(smb_request_t *sr, uint64_t ssnid) { smb_server_t *sv = sr->sr_server; smb_llist_t *sess_list; smb_session_t *sess; if (sv->sv_state != SMB_SERVER_STATE_RUNNING) return; sess_list = &sv->sv_session_list; smb_llist_enter(sess_list, RW_READER); for (sess = smb_llist_head(sess_list); sess != NULL; sess = smb_llist_next(sess_list, sess)) { smb_user_t *user; SMB_SESSION_VALID(sess); if (sess->dialect < SMB_VERS_2_BASE) continue; if (sess->s_state != SMB_SESSION_STATE_NEGOTIATED) continue; user = smb_session_lookup_ssnid(sess, ssnid); if (user == NULL) continue; if (!smb_is_same_user(user->u_cred, sr->user_cr)) { smb_user_release(user); continue; } /* Treat this as if we lost the connection */ user->preserve_opens = SMB2_DH_PRESERVE_SOME; smb_user_logoff(user); smb_user_release(user); /* * The above may have left work on the delete queues */ smb_llist_flush(&sess->s_tree_list); smb_llist_flush(&sess->s_user_list); } smb_llist_exit(sess_list); } /* See also: libsmb smb_kmod_setcfg */ static void smb_server_store_cfg(smb_server_t *sv, smb_ioc_cfg_t *ioc) { if (ioc->maxconnections == 0) ioc->maxconnections = 0xFFFFFFFF; if (ioc->encrypt == SMB_CONFIG_REQUIRED && ioc->max_protocol < SMB_VERS_3_0) { cmn_err(CE_WARN, "Server set to require encryption; " "forcing max_protocol to 3.0"); ioc->max_protocol = SMB_VERS_3_0; } sv->sv_cfg.skc_maxworkers = ioc->maxworkers; sv->sv_cfg.skc_maxconnections = ioc->maxconnections; sv->sv_cfg.skc_keepalive = ioc->keepalive; sv->sv_cfg.skc_restrict_anon = ioc->restrict_anon; sv->sv_cfg.skc_signing_enable = ioc->signing_enable; sv->sv_cfg.skc_signing_required = ioc->signing_required; sv->sv_cfg.skc_oplock_enable = ioc->oplock_enable; sv->sv_cfg.skc_sync_enable = ioc->sync_enable; sv->sv_cfg.skc_secmode = ioc->secmode; sv->sv_cfg.skc_netbios_enable = ioc->netbios_enable; sv->sv_cfg.skc_ipv6_enable = ioc->ipv6_enable; sv->sv_cfg.skc_print_enable = ioc->print_enable; sv->sv_cfg.skc_traverse_mounts = ioc->traverse_mounts; sv->sv_cfg.skc_max_protocol = ioc->max_protocol; sv->sv_cfg.skc_encrypt = ioc->encrypt; sv->sv_cfg.skc_execflags = ioc->exec_flags; sv->sv_cfg.skc_negtok_len = ioc->negtok_len; sv->sv_cfg.skc_version = ioc->version; sv->sv_cfg.skc_initial_credits = ioc->initial_credits; sv->sv_cfg.skc_maximum_credits = ioc->maximum_credits; (void) memcpy(sv->sv_cfg.skc_machine_uuid, ioc->machine_uuid, sizeof (uuid_t)); (void) memcpy(sv->sv_cfg.skc_negtok, ioc->negtok, sizeof (sv->sv_cfg.skc_negtok)); (void) memcpy(sv->sv_cfg.skc_native_os, ioc->native_os, sizeof (sv->sv_cfg.skc_native_os)); (void) memcpy(sv->sv_cfg.skc_native_lm, ioc->native_lm, sizeof (sv->sv_cfg.skc_native_lm)); (void) strlcpy(sv->sv_cfg.skc_nbdomain, ioc->nbdomain, sizeof (sv->sv_cfg.skc_nbdomain)); (void) strlcpy(sv->sv_cfg.skc_fqdn, ioc->fqdn, sizeof (sv->sv_cfg.skc_fqdn)); (void) strlcpy(sv->sv_cfg.skc_hostname, ioc->hostname, sizeof (sv->sv_cfg.skc_hostname)); (void) strlcpy(sv->sv_cfg.skc_system_comment, ioc->system_comment, sizeof (sv->sv_cfg.skc_system_comment)); } static int smb_server_fsop_start(smb_server_t *sv) { int error; error = smb_node_root_init(sv, &sv->si_root_smb_node); if (error != 0) sv->si_root_smb_node = NULL; return (error); } static void smb_server_fsop_stop(smb_server_t *sv) { if (sv->si_root_smb_node != NULL) { smb_node_release(sv->si_root_smb_node); sv->si_root_smb_node = NULL; } } smb_event_t * smb_event_create(smb_server_t *sv, int timeout) { smb_event_t *event; if (smb_server_is_stopping(sv)) return (NULL); event = kmem_cache_alloc(smb_cache_event, KM_SLEEP); bzero(event, sizeof (smb_event_t)); mutex_init(&event->se_mutex, NULL, MUTEX_DEFAULT, NULL); cv_init(&event->se_cv, NULL, CV_DEFAULT, NULL); event->se_magic = SMB_EVENT_MAGIC; event->se_txid = smb_event_alloc_txid(); event->se_server = sv; event->se_timeout = timeout; smb_llist_enter(&sv->sv_event_list, RW_WRITER); smb_llist_insert_tail(&sv->sv_event_list, event); smb_llist_exit(&sv->sv_event_list); return (event); } void smb_event_destroy(smb_event_t *event) { smb_server_t *sv; if (event == NULL) return; SMB_EVENT_VALID(event); ASSERT(event->se_waittime == 0); sv = event->se_server; SMB_SERVER_VALID(sv); smb_llist_enter(&sv->sv_event_list, RW_WRITER); smb_llist_remove(&sv->sv_event_list, event); smb_llist_exit(&sv->sv_event_list); event->se_magic = (uint32_t)~SMB_EVENT_MAGIC; cv_destroy(&event->se_cv); mutex_destroy(&event->se_mutex); kmem_cache_free(smb_cache_event, event); } /* * Get the txid for the specified event. */ uint32_t smb_event_txid(smb_event_t *event) { if (event != NULL) { SMB_EVENT_VALID(event); return (event->se_txid); } cmn_err(CE_NOTE, "smb_event_txid failed"); return ((uint32_t)-1); } /* * Wait for event notification. */ int smb_event_wait(smb_event_t *event) { int seconds = 1; int ticks; int err; if (event == NULL) return (EINVAL); SMB_EVENT_VALID(event); mutex_enter(&event->se_mutex); event->se_waittime = 1; event->se_errno = 0; while (!(event->se_notified)) { if (smb_event_debug && ((event->se_waittime % 30) == 0)) cmn_err(CE_NOTE, "smb_event_wait[%d] (%d sec)", event->se_txid, event->se_waittime); if (event->se_errno != 0) break; if (event->se_waittime > event->se_timeout) { event->se_errno = ETIME; break; } ticks = SEC_TO_TICK(seconds); (void) cv_reltimedwait(&event->se_cv, &event->se_mutex, (clock_t)ticks, TR_CLOCK_TICK); ++event->se_waittime; } err = event->se_errno; event->se_waittime = 0; event->se_notified = B_FALSE; cv_signal(&event->se_cv); mutex_exit(&event->se_mutex); return (err); } /* * If txid is non-zero, cancel the specified event. * Otherwise, cancel all events. */ static void smb_event_cancel(smb_server_t *sv, uint32_t txid) { smb_event_t *event; smb_llist_t *event_list; SMB_SERVER_VALID(sv); event_list = &sv->sv_event_list; smb_llist_enter(event_list, RW_WRITER); event = smb_llist_head(event_list); while (event) { SMB_EVENT_VALID(event); if (txid == 0 || event->se_txid == txid) { mutex_enter(&event->se_mutex); event->se_errno = ECANCELED; event->se_notified = B_TRUE; cv_signal(&event->se_cv); mutex_exit(&event->se_mutex); if (txid != 0) break; } event = smb_llist_next(event_list, event); } smb_llist_exit(event_list); } /* * If txid is non-zero, notify the specified event. * Otherwise, notify all events. */ void smb_event_notify(smb_server_t *sv, uint32_t txid) { smb_event_t *event; smb_llist_t *event_list; SMB_SERVER_VALID(sv); event_list = &sv->sv_event_list; smb_llist_enter(event_list, RW_READER); event = smb_llist_head(event_list); while (event) { SMB_EVENT_VALID(event); if (txid == 0 || event->se_txid == txid) { mutex_enter(&event->se_mutex); event->se_notified = B_TRUE; cv_signal(&event->se_cv); mutex_exit(&event->se_mutex); if (txid != 0) break; } event = smb_llist_next(event_list, event); } smb_llist_exit(event_list); } /* * Allocate a new transaction id (txid). * * 0 or -1 are not assigned because they are used to detect invalid * conditions or to indicate all open id's. */ static uint32_t smb_event_alloc_txid(void) { static kmutex_t txmutex; static uint32_t txid; uint32_t txid_ret; mutex_enter(&txmutex); if (txid == 0) txid = ddi_get_lbolt() << 11; do { ++txid; } while (txid == 0 || txid == (uint32_t)-1); txid_ret = txid; mutex_exit(&txmutex); return (txid_ret); } /* * Called by the ioctl to find the corresponding * spooldoc node. removes node on success * * Return values * rc * B_FALSE - not found * B_TRUE - found * */ static boolean_t smb_spool_lookup_doc_byfid(smb_server_t *sv, uint16_t fid, smb_kspooldoc_t *spdoc) { smb_kspooldoc_t *sp; smb_llist_t *splist; splist = &sv->sp_info.sp_list; smb_llist_enter(splist, RW_WRITER); sp = smb_llist_head(splist); while (sp != NULL) { /* * check for a matching fid */ if (sp->sd_fid == fid) { *spdoc = *sp; smb_llist_remove(splist, sp); smb_llist_exit(splist); kmem_free(sp, sizeof (smb_kspooldoc_t)); return (B_TRUE); } sp = smb_llist_next(splist, sp); } cmn_err(CE_WARN, "smb_spool_lookup_user_byfid: no fid:%d", fid); smb_llist_exit(splist); return (B_FALSE); } /* * Adds the spool fid to a linked list to be used * as a search key in the spooldoc queue * * Return values * rc non-zero error * rc zero success * */ void smb_spool_add_fid(smb_server_t *sv, uint16_t fid) { smb_llist_t *fidlist; smb_spoolfid_t *sf; if (sv->sv_cfg.skc_print_enable == 0) return; sf = kmem_zalloc(sizeof (smb_spoolfid_t), KM_SLEEP); fidlist = &sv->sp_info.sp_fidlist; smb_llist_enter(fidlist, RW_WRITER); sf->sf_fid = fid; smb_llist_insert_tail(fidlist, sf); smb_llist_exit(fidlist); cv_broadcast(&sv->sp_info.sp_cv); } /* * Called by the ioctl to get and remove the head of the fid list * * Return values * int fd * greater than 0 success * 0 - error * */ static uint16_t smb_spool_get_fid(smb_server_t *sv) { smb_spoolfid_t *spfid; smb_llist_t *splist; uint16_t fid; splist = &sv->sp_info.sp_fidlist; smb_llist_enter(splist, RW_WRITER); spfid = smb_llist_head(splist); if (spfid != NULL) { fid = spfid->sf_fid; smb_llist_remove(&sv->sp_info.sp_fidlist, spfid); kmem_free(spfid, sizeof (smb_spoolfid_t)); } else { fid = 0; } smb_llist_exit(splist); return (fid); } /* * Adds the spooldoc to the tail of the spooldoc list * * Return values * rc non-zero error * rc zero success */ int smb_spool_add_doc(smb_tree_t *tree, smb_kspooldoc_t *sp) { smb_llist_t *splist; smb_server_t *sv = tree->t_server; int rc = 0; splist = &sv->sp_info.sp_list; smb_llist_enter(splist, RW_WRITER); sp->sd_spool_num = atomic_inc_32_nv(&sv->sp_info.sp_cnt); smb_llist_insert_tail(splist, sp); smb_llist_exit(splist); return (rc); } /* * smb_server_create_session */ static void smb_server_create_session(smb_listener_daemon_t *ld, ksocket_t s_so) { smb_session_t *session; taskqid_t tqid; smb_llist_t *sl; smb_server_t *sv = ld->ld_sv; session = smb_session_create(s_so, ld->ld_port, sv, ld->ld_family); if (session == NULL) { smb_soshutdown(s_so); smb_sodestroy(s_so); cmn_err(CE_WARN, "SMB Session: alloc failed"); return; } sl = &sv->sv_session_list; smb_llist_enter(sl, RW_WRITER); smb_llist_insert_tail(sl, session); smb_llist_exit(sl); /* * These taskq entries must run independently of one another, * so TQ_NOQUEUE. TQ_SLEEP (==0) just for clarity. */ tqid = taskq_dispatch(sv->sv_receiver_pool, smb_server_receiver, session, TQ_NOQUEUE | TQ_SLEEP); if (tqid == TASKQID_INVALID) { smb_session_disconnect(session); smb_server_destroy_session(session); cmn_err(CE_WARN, "SMB Session: taskq_dispatch failed"); return; } /* handy for debugging */ session->s_receiver_tqid = tqid; } static void smb_server_destroy_session(smb_session_t *session) { smb_server_t *sv; smb_llist_t *ll; uint32_t count; ASSERT(session->s_server != NULL); sv = session->s_server; ll = &sv->sv_session_list; smb_llist_flush(&session->s_tree_list); smb_llist_flush(&session->s_user_list); /* * The user and tree lists should be empty now. */ #ifdef DEBUG if (session->s_user_list.ll_count != 0) { cmn_err(CE_WARN, "user list not empty?"); debug_enter("s_user_list"); } if (session->s_tree_list.ll_count != 0) { cmn_err(CE_WARN, "tree list not empty?"); debug_enter("s_tree_list"); } #endif smb_llist_enter(ll, RW_WRITER); smb_llist_remove(ll, session); count = ll->ll_count; smb_llist_exit(ll); smb_session_delete(session); if (count == 0) { /* See smb_server_shutdown */ cv_signal(&sv->sv_cv); } }