/* * 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 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * University Copyright- Copyright (c) 1982, 1986, 1988 * The Regents of the University of California * All Rights Reserved * * University Acknowledgment- Portions of this document are derived from * software developed by the University of California, Berkeley, and its * contributors. */ #ifndef _SYS_SOCKETVAR_H #define _SYS_SOCKETVAR_H #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef __cplusplus extern "C" { #endif /* * Internal representation of the address used to represent addresses * in the loopback transport for AF_UNIX. While the sockaddr_un is used * as the sockfs layer address for AF_UNIX the pathnames contained in * these addresses are not unique (due to relative pathnames) thus can not * be used in the transport. * * The transport level address consists of a magic number (used to separate the * name space for specific and implicit binds). For a specific bind * this is followed by a "vnode *" which ensures that all specific binds * have a unique transport level address. For implicit binds the latter * part of the address is a byte string (of the same length as a pointer) * that is assigned by the loopback transport. * * The uniqueness assumes that the loopback transport has a separate namespace * for sockets in order to avoid name conflicts with e.g. TLI use of the * same transport. */ struct so_ux_addr { void *soua_vp; /* vnode pointer or assigned by tl */ uint_t soua_magic; /* See below */ }; #define SOU_MAGIC_EXPLICIT 0x75787670 /* "uxvp" */ #define SOU_MAGIC_IMPLICIT 0x616e6f6e /* "anon" */ struct sockaddr_ux { sa_family_t sou_family; /* AF_UNIX */ struct so_ux_addr sou_addr; }; #if defined(_KERNEL) || defined(_KMEMUSER) #include typedef struct sonodeops sonodeops_t; typedef struct sonode sonode_t; /* * The sonode represents a socket. A sonode never exist in the file system * name space and can not be opened using open() - only the socket, socketpair * and accept calls create sonodes. * * The locking of sockfs uses the so_lock mutex plus the SOLOCKED and * SOREADLOCKED flags in so_flag. The mutex protects all the state in the * sonode. It is expected that the underlying transport protocol serializes * socket operations, so sockfs will not normally not single-thread * operations. However, certain sockets, including TPI based ones, can only * handle one control operation at a time. The SOLOCKED flag is used to * single-thread operations from sockfs users to prevent e.g. multiple bind() * calls to operate on the same sonode concurrently. The SOREADLOCKED flag is * used to ensure that only one thread sleeps in kstrgetmsg for a given * sonode. This is needed to ensure atomic operation for things like * MSG_WAITALL. * * The so_fallback_rwlock is used to ensure that for sockets that can * fall back to TPI, the fallback is not initiated until all pending * operations have completed. * * Note that so_lock is sometimes held across calls that might go to sleep * (kmem_alloc and soallocproto*). This implies that no other lock in * the system should be held when calling into sockfs; from the system call * side or from strrput (in case of TPI based sockets). If locks are held * while calling into sockfs the system might hang when running low on memory. */ struct sonode { struct vnode *so_vnode; /* vnode associated with this sonode */ sonodeops_t *so_ops; /* operations vector for this sonode */ void *so_priv; /* sonode private data */ krwlock_t so_fallback_rwlock; kmutex_t so_lock; /* protects sonode fields */ kcondvar_t so_state_cv; /* synchronize state changes */ kcondvar_t so_want_cv; /* wait due to SOLOCKED */ /* These fields are protected by so_lock */ uint_t so_state; /* internal state flags SS_*, below */ uint_t so_mode; /* characteristics on socket. SM_* */ ushort_t so_flag; /* flags, see below */ int so_count; /* count of opened references */ sock_connid_t so_proto_connid; /* protocol generation number */ ushort_t so_error; /* error affecting connection */ struct sockparams *so_sockparams; /* vnode or socket module */ /* Needed to recreate the same socket for accept */ short so_family; short so_type; short so_protocol; short so_version; /* From so_socket call */ /* Accept queue */ kmutex_t so_acceptq_lock; /* protects accept queue */ struct sonode *so_acceptq_next; /* acceptq list node */ struct sonode *so_acceptq_head; struct sonode **so_acceptq_tail; unsigned int so_acceptq_len; unsigned int so_backlog; /* Listen backlog */ kcondvar_t so_acceptq_cv; /* wait for new conn. */ /* Options */ short so_options; /* From socket call, see socket.h */ struct linger so_linger; /* SO_LINGER value */ #define so_sndbuf so_proto_props.sopp_txhiwat /* SO_SNDBUF value */ #define so_sndlowat so_proto_props.sopp_txlowat /* tx low water mark */ #define so_rcvbuf so_proto_props.sopp_rxhiwat /* SO_RCVBUF value */ #define so_rcvlowat so_proto_props.sopp_rxlowat /* rx low water mark */ #define so_max_addr_len so_proto_props.sopp_maxaddrlen #define so_minpsz so_proto_props.sopp_minpsz #define so_maxpsz so_proto_props.sopp_maxpsz clock_t so_sndtimeo; /* send timeout */ clock_t so_rcvtimeo; /* recv timeout */ mblk_t *so_oobmsg; /* outofline oob data */ ssize_t so_oobmark; /* offset of the oob data */ pid_t so_pgrp; /* pgrp for signals */ cred_t *so_peercred; /* connected socket peer cred */ pid_t so_cpid; /* connected socket peer cached pid */ zoneid_t so_zoneid; /* opener's zoneid */ struct pollhead so_poll_list; /* common pollhead */ short so_pollev; /* events that should be generated */ /* Receive */ unsigned int so_rcv_queued; mblk_t *so_rcv_q_head; mblk_t *so_rcv_q_last_head; mblk_t *so_rcv_head; /* 1st mblk in the list */ mblk_t *so_rcv_last_head; /* last mblk in b_next chain */ kcondvar_t so_rcv_cv; uint_t so_rcv_wanted; /* # of bytes wanted by app */ timeout_id_t so_rcv_timer_tid; #define so_rcv_thresh so_proto_props.sopp_rcvthresh #define so_rcv_timer_interval so_proto_props.sopp_rcvtimer kcondvar_t so_snd_cv; uint32_t so_snd_qfull: 1, /* Transmit full */ so_rcv_wakeup: 1, so_snd_wakeup: 1, so_not_str: 1, /* B_TRUE if not streams based socket */ so_pad_to_bit_31: 28; /* Communication channel with protocol */ sock_lower_handle_t so_proto_handle; sock_downcalls_t *so_downcalls; struct sock_proto_props so_proto_props; /* protocol settings */ boolean_t so_flowctrld; /* Flow controlled */ uint_t so_copyflag; /* Copy related flag */ kcondvar_t so_copy_cv; /* Copy cond variable */ /* kernel sockets */ ksocket_callbacks_t so_ksock_callbacks; void *so_ksock_cb_arg; /* callback argument */ kcondvar_t so_closing_cv; /* != NULL for sodirect_t enabled socket */ sodirect_t *so_direct; }; /* * We do an initial check for events without holding locks. However, * if there are no event available, then we redo the check for POLLIN * events under the lock. */ #define SO_HAVE_DATA(so) \ ((so)->so_rcv_timer_tid == 0 && (so->so_rcv_queued > 0)) || \ ((so)->so_rcv_queued > (so)->so_rcv_thresh) || \ ((so)->so_state & SS_CANTRCVMORE) /* * Events handled by the protocol (in case sd_poll is set) */ #define SO_PROTO_POLLEV (POLLIN|POLLRDNORM|POLLRDBAND) #endif /* _KERNEL || _KMEMUSER */ /* flags */ #define SOMOD 0x0001 /* update socket modification time */ #define SOACC 0x0002 /* update socket access time */ #define SOLOCKED 0x0010 /* use to serialize open/closes */ #define SOREADLOCKED 0x0020 /* serialize kstrgetmsg calls */ #define SOWANT 0x0040 /* some process waiting on lock */ #define SOCLONE 0x0080 /* child of clone driver */ #define SOASYNC_UNBIND 0x0100 /* wait for ACK of async unbind */ #define SOCK_IS_NONSTR(so) ((so)->so_not_str) /* * Socket state bits. */ #define SS_ISCONNECTED 0x00000001 /* socket connected to a peer */ #define SS_ISCONNECTING 0x00000002 /* in process, connecting to peer */ #define SS_ISDISCONNECTING 0x00000004 /* in process of disconnecting */ #define SS_CANTSENDMORE 0x00000008 /* can't send more data to peer */ #define SS_CANTRCVMORE 0x00000010 /* can't receive more data */ #define SS_ISBOUND 0x00000020 /* socket is bound */ #define SS_NDELAY 0x00000040 /* FNDELAY non-blocking */ #define SS_NONBLOCK 0x00000080 /* O_NONBLOCK non-blocking */ #define SS_ASYNC 0x00000100 /* async i/o notify */ #define SS_ACCEPTCONN 0x00000200 /* listen done */ /* unused 0x00000400 */ /* was SS_HASCONNIND */ #define SS_SAVEDEOR 0x00000800 /* Saved MSG_EOR rcv side state */ #define SS_RCVATMARK 0x00001000 /* at mark on input */ #define SS_OOBPEND 0x00002000 /* OOB pending or present - poll */ #define SS_HAVEOOBDATA 0x00004000 /* OOB data present */ #define SS_HADOOBDATA 0x00008000 /* OOB data consumed */ #define SS_CLOSING 0x00010000 /* in process of closing */ /* unused 0x00020000 */ /* was SS_FADDR_NOXLATE */ /* unused 0x00040000 */ /* was SS_HASDATA */ /* unused 0x00080000 */ /* was SS_DONEREAD */ /* unused 0x00100000 */ /* was SS_MOREDATA */ /* unused 0x00200000 */ /* was SS_DIRECT */ #define SS_SODIRECT 0x00400000 /* transport supports sodirect */ /* unused 0x01000000 */ /* was SS_LADDR_VALID */ /* unused 0x02000000 */ /* was SS_FADDR_VALID */ #define SS_SENTLASTREADSIG 0x10000000 /* last rx signal has been sent */ #define SS_SENTLASTWRITESIG 0x20000000 /* last tx signal has been sent */ #define SS_FALLBACK_PENDING 0x40000000 #define SS_FALLBACK_COMP 0x80000000 /* Set of states when the socket can't be rebound */ #define SS_CANTREBIND (SS_ISCONNECTED|SS_ISCONNECTING|SS_ISDISCONNECTING|\ SS_CANTSENDMORE|SS_CANTRCVMORE|SS_ACCEPTCONN) /* * Sockets that can fall back to TPI must ensure that fall back is not * initiated while a thread is using a socket. */ #define SO_BLOCK_FALLBACK(so, fn) { \ ASSERT(MUTEX_NOT_HELD(&(so)->so_lock)); \ rw_enter(&(so)->so_fallback_rwlock, RW_READER); \ if ((so)->so_state & SS_FALLBACK_COMP) { \ rw_exit(&(so)->so_fallback_rwlock); \ return (fn); \ } \ } #define SO_UNBLOCK_FALLBACK(so) { \ rw_exit(&(so)->so_fallback_rwlock); \ } /* Poll events */ #define SO_POLLEV_IN 0x1 /* POLLIN wakeup needed */ #define SO_POLLEV_ALWAYS 0x2 /* wakeups */ /* * Characteristics of sockets. Not changed after the socket is created. */ #define SM_PRIV 0x001 /* privileged for broadcast, raw... */ #define SM_ATOMIC 0x002 /* atomic data transmission */ #define SM_ADDR 0x004 /* addresses given with messages */ #define SM_CONNREQUIRED 0x008 /* connection required by protocol */ #define SM_FDPASSING 0x010 /* passes file descriptors */ #define SM_EXDATA 0x020 /* Can handle T_EXDATA_REQ */ #define SM_OPTDATA 0x040 /* Can handle T_OPTDATA_REQ */ #define SM_BYTESTREAM 0x080 /* Byte stream - can use M_DATA */ #define SM_ACCEPTOR_ID 0x100 /* so_acceptor_id is valid */ #define SM_KERNEL 0x200 /* kernel socket */ /* The modes below are only for non-streams sockets */ #define SM_ACCEPTSUPP 0x400 /* can handle accept() */ #define SM_SENDFILESUPP 0x800 /* Private: proto supp sendfile */ /* * Socket versions. Used by the socket library when calling _so_socket(). */ #define SOV_STREAM 0 /* Not a socket - just a stream */ #define SOV_DEFAULT 1 /* Select based on so_default_version */ #define SOV_SOCKSTREAM 2 /* Socket plus streams operations */ #define SOV_SOCKBSD 3 /* Socket with no streams operations */ #define SOV_XPG4_2 4 /* Xnet socket */ #if defined(_KERNEL) || defined(_KMEMUSER) /* * sonode create and destroy functions. */ typedef struct sonode *(*so_create_func_t)(struct sockparams *, int, int, int, int, int, int *, cred_t *); typedef void (*so_destroy_func_t)(struct sonode *); /* STREAM device information */ typedef struct sdev_info { char *sd_devpath; int sd_devpathlen; /* Is 0 if sp_devpath is a static string */ vnode_t *sd_vnode; } sdev_info_t; #define SOCKMOD_VERSION 1 /* name of the TPI pseudo socket module */ #define SOTPI_SMOD_NAME "socktpi" typedef struct __smod_priv_s { so_create_func_t smodp_sock_create_func; so_destroy_func_t smodp_sock_destroy_func; so_proto_fallback_func_t smodp_proto_fallback_func; } __smod_priv_t; /* * Socket module register information */ typedef struct smod_reg_s { int smod_version; char *smod_name; size_t smod_uc_version; size_t smod_dc_version; so_proto_create_func_t smod_proto_create_func; /* __smod_priv_data must be NULL */ __smod_priv_t *__smod_priv; } smod_reg_t; /* * Socket module information */ typedef struct smod_info { int smod_version; char *smod_name; uint_t smod_refcnt; /* # of entries */ size_t smod_uc_version; /* upcall version */ size_t smod_dc_version; /* down call version */ so_proto_create_func_t smod_proto_create_func; so_proto_fallback_func_t smod_proto_fallback_func; so_create_func_t smod_sock_create_func; so_destroy_func_t smod_sock_destroy_func; list_node_t smod_node; } smod_info_t; /* * sockparams * * Used for mapping family/type/protocol to module */ struct sockparams { /* * The family, type, protocol, sdev_info and smod_info are * set when the entry is created, and they will never change * thereafter. */ int sp_family; int sp_type; int sp_protocol; sdev_info_t sp_sdev_info; /* STREAM device */ char *sp_smod_name; /* socket module name */ smod_info_t *sp_smod_info; /* socket module */ kmutex_t sp_lock; /* lock for refcnt */ uint64_t sp_refcnt; /* entry reference count */ /* * The entries below are only modified while holding * splist_lock as a writer. */ int sp_flags; /* see below */ list_node_t sp_node; }; /* * sockparams flags */ #define SOCKPARAMS_EPHEMERAL 0x1 /* temp. entry, not on global list */ extern void sockparams_init(void); extern struct sockparams *sockparams_hold_ephemeral_bydev(int, int, int, const char *, int, int *); extern struct sockparams *sockparams_hold_ephemeral_bymod(int, int, int, const char *, int, int *); extern void sockparams_ephemeral_drop_last_ref(struct sockparams *); extern void smod_init(void); extern void smod_add(smod_info_t *); extern int smod_register(const smod_reg_t *); extern int smod_unregister(const char *); extern smod_info_t *smod_lookup_byname(const char *); #define SOCKPARAMS_HAS_DEVICE(sp) \ ((sp)->sp_sdev_info.sd_devpath != NULL) /* Increase the smod_info_t reference count */ #define SMOD_INC_REF(smodp) { \ ASSERT((smodp) != NULL); \ DTRACE_PROBE1(smodinfo__inc__ref, struct smod_info *, (smodp)); \ atomic_inc_uint(&(smodp)->smod_refcnt); \ } /* * Decreace the socket module entry reference count. * When no one mapping to the entry, we try to unload the module from the * kernel. If the module can't unload, just leave the module entry with * a zero refcnt. */ #define SMOD_DEC_REF(sp, smodp) { \ ASSERT((smodp) != NULL); \ ASSERT((smodp)->smod_refcnt != 0); \ atomic_dec_uint(&(smodp)->smod_refcnt); \ /* \ * No need to atomically check the return value because the \ * socket module framework will verify that no one is using \ * the module before unloading. Worst thing that can happen \ * here is multiple calls to mod_remove_by_name(), which is OK. \ */ \ if ((smodp)->smod_refcnt == 0) \ (void) mod_remove_by_name((sp)->sp_smod_name); \ } /* Increase the reference count */ #define SOCKPARAMS_INC_REF(sp) { \ ASSERT((sp) != NULL); \ DTRACE_PROBE1(sockparams__inc__ref, struct sockparams *, (sp)); \ mutex_enter(&(sp)->sp_lock); \ (sp)->sp_refcnt++; \ ASSERT((sp)->sp_refcnt != 0); \ mutex_exit(&(sp)->sp_lock); \ } /* * Decrease the reference count. * * If the sockparams is ephemeral, then the thread dropping the last ref * count will destroy the entry. */ #define SOCKPARAMS_DEC_REF(sp) { \ ASSERT((sp) != NULL); \ DTRACE_PROBE1(sockparams__dec__ref, struct sockparams *, (sp)); \ mutex_enter(&(sp)->sp_lock); \ ASSERT((sp)->sp_refcnt > 0); \ if ((sp)->sp_refcnt == 1) { \ if ((sp)->sp_flags & SOCKPARAMS_EPHEMERAL) { \ mutex_exit(&(sp)->sp_lock); \ sockparams_ephemeral_drop_last_ref((sp)); \ } else { \ (sp)->sp_refcnt--; \ if ((sp)->sp_smod_info != NULL) \ SMOD_DEC_REF(sp, (sp)->sp_smod_info); \ (sp)->sp_smod_info = NULL; \ mutex_exit(&(sp)->sp_lock); \ } \ } else { \ (sp)->sp_refcnt--; \ mutex_exit(&(sp)->sp_lock); \ } \ } /* * Used to traverse the list of AF_UNIX sockets to construct the kstat * for netstat(1m). */ struct socklist { kmutex_t sl_lock; struct sonode *sl_list; }; extern struct socklist socklist; /* * ss_full_waits is the number of times the reader thread * waits when the queue is full and ss_empty_waits is the number * of times the consumer thread waits when the queue is empty. * No locks for these as they are just indicators of whether * disk or network or both is slow or fast. */ struct sendfile_stats { uint32_t ss_file_cached; uint32_t ss_file_not_cached; uint32_t ss_full_waits; uint32_t ss_empty_waits; uint32_t ss_file_segmap; }; /* * A single sendfile request is represented by snf_req. */ typedef struct snf_req { struct snf_req *sr_next; mblk_t *sr_mp_head; mblk_t *sr_mp_tail; kmutex_t sr_lock; kcondvar_t sr_cv; uint_t sr_qlen; int sr_hiwat; int sr_lowat; int sr_operation; struct vnode *sr_vp; file_t *sr_fp; ssize_t sr_maxpsz; u_offset_t sr_file_off; u_offset_t sr_file_size; #define SR_READ_DONE 0x80000000 int sr_read_error; int sr_write_error; } snf_req_t; /* A queue of sendfile requests */ struct sendfile_queue { snf_req_t *snfq_req_head; snf_req_t *snfq_req_tail; kmutex_t snfq_lock; kcondvar_t snfq_cv; int snfq_svc_threads; /* # of service threads */ int snfq_idle_cnt; /* # of idling threads */ int snfq_max_threads; int snfq_req_cnt; /* Number of requests */ }; #define READ_OP 1 #define SNFQ_TIMEOUT (60 * 5 * hz) /* 5 minutes */ /* Socket network operations switch */ struct sonodeops { int (*sop_init)(struct sonode *, struct sonode *, cred_t *, int); int (*sop_accept)(struct sonode *, int, cred_t *, struct sonode **); int (*sop_bind)(struct sonode *, struct sockaddr *, socklen_t, int, cred_t *); int (*sop_listen)(struct sonode *, int, cred_t *); int (*sop_connect)(struct sonode *, const struct sockaddr *, socklen_t, int, int, cred_t *); int (*sop_recvmsg)(struct sonode *, struct msghdr *, struct uio *, cred_t *); int (*sop_sendmsg)(struct sonode *, struct msghdr *, struct uio *, cred_t *); int (*sop_sendmblk)(struct sonode *, struct msghdr *, int, cred_t *, mblk_t **); int (*sop_getpeername)(struct sonode *, struct sockaddr *, socklen_t *, boolean_t, cred_t *); int (*sop_getsockname)(struct sonode *, struct sockaddr *, socklen_t *, cred_t *); int (*sop_shutdown)(struct sonode *, int, cred_t *); int (*sop_getsockopt)(struct sonode *, int, int, void *, socklen_t *, int, cred_t *); int (*sop_setsockopt)(struct sonode *, int, int, const void *, socklen_t, cred_t *); int (*sop_ioctl)(struct sonode *, int, intptr_t, int, cred_t *, int32_t *); int (*sop_poll)(struct sonode *, short, int, short *, struct pollhead **); int (*sop_close)(struct sonode *, int, cred_t *); }; #define SOP_INIT(so, flag, cr, flags) \ ((so)->so_ops->sop_init((so), (flag), (cr), (flags))) #define SOP_ACCEPT(so, fflag, cr, nsop) \ ((so)->so_ops->sop_accept((so), (fflag), (cr), (nsop))) #define SOP_BIND(so, name, namelen, flags, cr) \ ((so)->so_ops->sop_bind((so), (name), (namelen), (flags), (cr))) #define SOP_LISTEN(so, backlog, cr) \ ((so)->so_ops->sop_listen((so), (backlog), (cr))) #define SOP_CONNECT(so, name, namelen, fflag, flags, cr) \ ((so)->so_ops->sop_connect((so), (name), (namelen), (fflag), (flags), \ (cr))) #define SOP_RECVMSG(so, msg, uiop, cr) \ ((so)->so_ops->sop_recvmsg((so), (msg), (uiop), (cr))) #define SOP_SENDMSG(so, msg, uiop, cr) \ ((so)->so_ops->sop_sendmsg((so), (msg), (uiop), (cr))) #define SOP_SENDMBLK(so, msg, size, cr, mpp) \ ((so)->so_ops->sop_sendmblk((so), (msg), (size), (cr), (mpp))) #define SOP_GETPEERNAME(so, addr, addrlen, accept, cr) \ ((so)->so_ops->sop_getpeername((so), (addr), (addrlen), (accept), (cr))) #define SOP_GETSOCKNAME(so, addr, addrlen, cr) \ ((so)->so_ops->sop_getsockname((so), (addr), (addrlen), (cr))) #define SOP_SHUTDOWN(so, how, cr) \ ((so)->so_ops->sop_shutdown((so), (how), (cr))) #define SOP_GETSOCKOPT(so, level, optionname, optval, optlenp, flags, cr) \ ((so)->so_ops->sop_getsockopt((so), (level), (optionname), \ (optval), (optlenp), (flags), (cr))) #define SOP_SETSOCKOPT(so, level, optionname, optval, optlen, cr) \ ((so)->so_ops->sop_setsockopt((so), (level), (optionname), \ (optval), (optlen), (cr))) #define SOP_IOCTL(so, cmd, arg, mode, cr, rvalp) \ ((so)->so_ops->sop_ioctl((so), (cmd), (arg), (mode), (cr), (rvalp))) #define SOP_POLL(so, events, anyyet, reventsp, phpp) \ ((so)->so_ops->sop_poll((so), (events), (anyyet), (reventsp), (phpp))) #define SOP_CLOSE(so, flag, cr) \ ((so)->so_ops->sop_close((so), (flag), (cr))) #endif /* defined(_KERNEL) || defined(_KMEMUSER) */ #ifdef _KERNEL #define ISALIGNED_cmsghdr(addr) \ (((uintptr_t)(addr) & (_CMSG_HDR_ALIGNMENT - 1)) == 0) #define ROUNDUP_cmsglen(len) \ (((len) + _CMSG_HDR_ALIGNMENT - 1) & ~(_CMSG_HDR_ALIGNMENT - 1)) #define IS_NON_STREAM_SOCK(vp) \ ((vp)->v_type == VSOCK && (vp)->v_stream == NULL) /* * Macros that operate on struct cmsghdr. * Used in parsing msg_control. * The CMSG_VALID macro does not assume that the last option buffer is padded. */ #define CMSG_NEXT(cmsg) \ (struct cmsghdr *)((uintptr_t)(cmsg) + \ ROUNDUP_cmsglen((cmsg)->cmsg_len)) #define CMSG_CONTENT(cmsg) (&((cmsg)[1])) #define CMSG_CONTENTLEN(cmsg) ((cmsg)->cmsg_len - sizeof (struct cmsghdr)) #define CMSG_VALID(cmsg, start, end) \ (ISALIGNED_cmsghdr(cmsg) && \ ((uintptr_t)(cmsg) >= (uintptr_t)(start)) && \ ((uintptr_t)(cmsg) < (uintptr_t)(end)) && \ ((ssize_t)(cmsg)->cmsg_len >= sizeof (struct cmsghdr)) && \ ((uintptr_t)(cmsg) + (cmsg)->cmsg_len <= (uintptr_t)(end))) /* * Maximum size of any argument that is copied in (addresses, options, * access rights). MUST be at least MAXPATHLEN + 3. * BSD and SunOS 4.X limited this to MLEN or MCLBYTES. */ #define SO_MAXARGSIZE 8192 /* * Convert between vnode and sonode */ #define VTOSO(vp) ((struct sonode *)((vp)->v_data)) #define SOTOV(sp) ((sp)->so_vnode) /* * Internal flags for sobind() */ #define _SOBIND_REBIND 0x01 /* Bind to existing local address */ #define _SOBIND_UNSPEC 0x02 /* Bind to unspecified address */ #define _SOBIND_LOCK_HELD 0x04 /* so_excl_lock held by caller */ #define _SOBIND_NOXLATE 0x08 /* No addr translation for AF_UNIX */ #define _SOBIND_XPG4_2 0x10 /* xpg4.2 semantics */ #define _SOBIND_SOCKBSD 0x20 /* BSD semantics */ #define _SOBIND_LISTEN 0x40 /* Make into SS_ACCEPTCONN */ #define _SOBIND_SOCKETPAIR 0x80 /* Internal flag for so_socketpair() */ /* to enable listen with backlog = 1 */ /* * Internal flags for sounbind() */ #define _SOUNBIND_REBIND 0x01 /* Don't clear fields - will rebind */ /* * Internal flags for soconnect() */ #define _SOCONNECT_NOXLATE 0x01 /* No addr translation for AF_UNIX */ #define _SOCONNECT_DID_BIND 0x02 /* Unbind when connect fails */ #define _SOCONNECT_XPG4_2 0x04 /* xpg4.2 semantics */ /* * Internal flags for sodisconnect() */ #define _SODISCONNECT_LOCK_HELD 0x01 /* so_excl_lock held by caller */ /* * Internal flags for sotpi_getsockopt(). */ #define _SOGETSOCKOPT_XPG4_2 0x01 /* xpg4.2 semantics */ /* * Internal flags for soallocproto*() */ #define _ALLOC_NOSLEEP 0 /* Don't sleep for memory */ #define _ALLOC_INTR 1 /* Sleep until interrupt */ #define _ALLOC_SLEEP 2 /* Sleep forever */ /* * Internal structure for handling AF_UNIX file descriptor passing */ struct fdbuf { int fd_size; /* In bytes, for kmem_free */ int fd_numfd; /* Number of elements below */ char *fd_ebuf; /* Extra buffer to free */ int fd_ebuflen; frtn_t fd_frtn; struct file *fd_fds[1]; /* One or more */ }; #define FDBUF_HDRSIZE (sizeof (struct fdbuf) - sizeof (struct file *)) /* * Variable that can be patched to set what version of socket socket() * will create. */ extern int so_default_version; #ifdef DEBUG /* Turn on extra testing capabilities */ #define SOCK_TEST #endif /* DEBUG */ #ifdef DEBUG char *pr_state(uint_t, uint_t); char *pr_addr(int, struct sockaddr *, t_uscalar_t); int so_verify_oobstate(struct sonode *); #endif /* DEBUG */ /* * DEBUG macros */ #if defined(DEBUG) #define SOCK_DEBUG extern int sockdebug; extern int sockprinterr; #define eprint(args) printf args #define eprintso(so, args) \ { if (sockprinterr && ((so)->so_options & SO_DEBUG)) printf args; } #define eprintline(error) \ { \ if (error != EINTR && (sockprinterr || sockdebug > 0)) \ printf("socket error %d: line %d file %s\n", \ (error), __LINE__, __FILE__); \ } #define eprintsoline(so, error) \ { if (sockprinterr && ((so)->so_options & SO_DEBUG)) \ printf("socket(%p) error %d: line %d file %s\n", \ (void *)(so), (error), __LINE__, __FILE__); \ } #define dprint(level, args) { if (sockdebug > (level)) printf args; } #define dprintso(so, level, args) \ { if (sockdebug > (level) && ((so)->so_options & SO_DEBUG)) printf args; } #else /* define(DEBUG) */ #define eprint(args) {} #define eprintso(so, args) {} #define eprintline(error) {} #define eprintsoline(so, error) {} #define dprint(level, args) {} #define dprintso(so, level, args) {} #endif /* defined(DEBUG) */ extern struct vfsops sock_vfsops; extern struct vnodeops *socket_vnodeops; extern const struct fs_operation_def socket_vnodeops_template[]; extern dev_t sockdev; /* * sockfs functions */ extern int sock_getmsg(vnode_t *, struct strbuf *, struct strbuf *, uchar_t *, int *, int, rval_t *); extern int sock_putmsg(vnode_t *, struct strbuf *, struct strbuf *, uchar_t, int, int); extern int sogetvp(char *, vnode_t **, int); extern int sockinit(int, char *); extern int soconfig(int, int, int, char *, int, char *); extern int solookup(int, int, int, struct sockparams **); extern void so_lock_single(struct sonode *); extern void so_unlock_single(struct sonode *, int); extern int so_lock_read(struct sonode *, int); extern int so_lock_read_intr(struct sonode *, int); extern void so_unlock_read(struct sonode *); extern void *sogetoff(mblk_t *, t_uscalar_t, t_uscalar_t, uint_t); extern void so_getopt_srcaddr(void *, t_uscalar_t, void **, t_uscalar_t *); extern int so_getopt_unix_close(void *, t_uscalar_t); extern void fdbuf_free(struct fdbuf *); extern mblk_t *fdbuf_allocmsg(int, struct fdbuf *); extern int fdbuf_create(void *, int, struct fdbuf **); extern void so_closefds(void *, t_uscalar_t, int, int); extern int so_getfdopt(void *, t_uscalar_t, int, void **, int *); t_uscalar_t so_optlen(void *, t_uscalar_t, int); extern void so_cmsg2opt(void *, t_uscalar_t, int, mblk_t *); extern t_uscalar_t so_cmsglen(mblk_t *, void *, t_uscalar_t, int); extern int so_opt2cmsg(mblk_t *, void *, t_uscalar_t, int, void *, t_uscalar_t); extern void soisconnecting(struct sonode *); extern void soisconnected(struct sonode *); extern void soisdisconnected(struct sonode *, int); extern void socantsendmore(struct sonode *); extern void socantrcvmore(struct sonode *); extern void soseterror(struct sonode *, int); extern int sogeterr(struct sonode *, boolean_t); extern int sowaitconnected(struct sonode *, int, int); extern ssize_t soreadfile(file_t *, uchar_t *, u_offset_t, int *, size_t); extern void *sock_kstat_init(zoneid_t); extern void sock_kstat_fini(zoneid_t, void *); extern struct sonode *getsonode(int, int *, file_t **); /* * Function wrappers (mostly around the sonode switch) for * backward compatibility. */ extern int soaccept(struct sonode *, int, struct sonode **); extern int sobind(struct sonode *, struct sockaddr *, socklen_t, int, int); extern int solisten(struct sonode *, int); extern int soconnect(struct sonode *, const struct sockaddr *, socklen_t, int, int); extern int sorecvmsg(struct sonode *, struct nmsghdr *, struct uio *); extern int sosendmsg(struct sonode *, struct nmsghdr *, struct uio *); extern int soshutdown(struct sonode *, int); extern int sogetsockopt(struct sonode *, int, int, void *, socklen_t *, int); extern int sosetsockopt(struct sonode *, int, int, const void *, t_uscalar_t); extern struct sonode *socreate(struct sockparams *, int, int, int, int, int *); extern int so_copyin(const void *, void *, size_t, int); extern int so_copyout(const void *, void *, size_t, int); #endif /* * Internal structure for obtaining sonode information from the socklist. * These types match those corresponding in the sonode structure. * This is not a published interface, and may change at any time. */ struct sockinfo { uint_t si_size; /* real length of this struct */ short si_family; short si_type; ushort_t si_flag; uint_t si_state; uint_t si_ux_laddr_sou_magic; uint_t si_ux_faddr_sou_magic; t_scalar_t si_serv_type; t_uscalar_t si_laddr_soa_len; t_uscalar_t si_faddr_soa_len; uint16_t si_laddr_family; uint16_t si_faddr_family; char si_laddr_sun_path[MAXPATHLEN + 1]; /* NULL terminated */ char si_faddr_sun_path[MAXPATHLEN + 1]; boolean_t si_faddr_noxlate; zoneid_t si_szoneid; }; #define SOCKMOD_PATH "socketmod" /* dir where sockmods are stored */ #ifdef __cplusplus } #endif #endif /* _SYS_SOCKETVAR_H */