Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1 | /* |
| 2 | * CDDL HEADER START |
| 3 | * |
| 4 | * The contents of this file are subject to the terms of the |
| 5 | * Common Development and Distribution License (the "License"). |
| 6 | * You may not use this file except in compliance with the License. |
| 7 | * |
| 8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| 9 | * or http://www.opensolaris.org/os/licensing. |
| 10 | * See the License for the specific language governing permissions |
| 11 | * and limitations under the License. |
| 12 | * |
| 13 | * When distributing Covered Code, include this CDDL HEADER in each |
| 14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| 15 | * If applicable, add the following below this CDDL HEADER, with the |
| 16 | * fields enclosed by brackets "[]" replaced with your own identifying |
| 17 | * information: Portions Copyright [yyyy] [name of copyright owner] |
| 18 | * |
| 19 | * CDDL HEADER END |
| 20 | */ |
| 21 | |
| 22 | /* |
Eiji Ota | c0dd49b | 2010-04-21 07:25:52 -0700 | [diff] [blame] | 23 | * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 24 | */ |
| 25 | |
Bryan Cantrill | 68846fd | 2014-02-24 17:05:14 +0000 | [diff] [blame] | 26 | /* |
Robert Mustacchi | 907c282 | 2021-02-01 13:50:02 +0000 | [diff] [blame] | 27 | * Copyright (c) 2015, Joyent, Inc. All rights reserved. |
Andy Fiddaman | 78a2e11 | 2019-08-22 14:59:11 +0000 | [diff] [blame] | 28 | * Copyright 2019 OmniOS Community Edition (OmniOSce) Association. |
Garrett D'Amore | 15f90b0 | 2022-07-03 19:05:50 -0700 | [diff] [blame] | 29 | * Copyright 2022 Garrett D'Amore |
Bryan Cantrill | 68846fd | 2014-02-24 17:05:14 +0000 | [diff] [blame] | 30 | */ |
| 31 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 32 | #include <sys/types.h> |
| 33 | #include <sys/param.h> |
| 34 | #include <sys/systm.h> |
| 35 | #include <sys/sysmacros.h> |
| 36 | #include <sys/debug.h> |
| 37 | #include <sys/cmn_err.h> |
| 38 | |
| 39 | #include <sys/stropts.h> |
| 40 | #include <sys/socket.h> |
| 41 | #include <sys/socketvar.h> |
| 42 | |
| 43 | #define _SUN_TPI_VERSION 2 |
| 44 | #include <sys/tihdr.h> |
| 45 | #include <sys/sockio.h> |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 46 | #include <sys/kmem_impl.h> |
| 47 | |
| 48 | #include <sys/strsubr.h> |
| 49 | #include <sys/strsun.h> |
| 50 | #include <sys/ddi.h> |
| 51 | #include <netinet/in.h> |
| 52 | #include <inet/ip.h> |
| 53 | |
| 54 | #include <fs/sockfs/sockcommon.h> |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 55 | #include <fs/sockfs/sockfilter_impl.h> |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 56 | |
| 57 | #include <sys/socket_proto.h> |
| 58 | |
| 59 | #include <fs/sockfs/socktpi_impl.h> |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 60 | #include <fs/sockfs/sodirect.h> |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 61 | #include <sys/tihdr.h> |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 62 | |
| 63 | extern int xnet_skip_checks; |
| 64 | extern int xnet_check_print; |
| 65 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 66 | static void so_queue_oob(struct sonode *, mblk_t *, size_t); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 67 | |
| 68 | |
| 69 | /*ARGSUSED*/ |
| 70 | int |
| 71 | so_accept_notsupp(struct sonode *lso, int fflag, |
| 72 | struct cred *cr, struct sonode **nsop) |
| 73 | { |
| 74 | return (EOPNOTSUPP); |
| 75 | } |
| 76 | |
| 77 | /*ARGSUSED*/ |
| 78 | int |
| 79 | so_listen_notsupp(struct sonode *so, int backlog, struct cred *cr) |
| 80 | { |
| 81 | return (EOPNOTSUPP); |
| 82 | } |
| 83 | |
| 84 | /*ARGSUSED*/ |
| 85 | int |
| 86 | so_getsockname_notsupp(struct sonode *so, struct sockaddr *sa, |
| 87 | socklen_t *len, struct cred *cr) |
| 88 | { |
| 89 | return (EOPNOTSUPP); |
| 90 | } |
| 91 | |
| 92 | /*ARGSUSED*/ |
| 93 | int |
| 94 | so_getpeername_notsupp(struct sonode *so, struct sockaddr *addr, |
| 95 | socklen_t *addrlen, boolean_t accept, struct cred *cr) |
| 96 | { |
| 97 | return (EOPNOTSUPP); |
| 98 | } |
| 99 | |
| 100 | /*ARGSUSED*/ |
| 101 | int |
| 102 | so_shutdown_notsupp(struct sonode *so, int how, struct cred *cr) |
| 103 | { |
| 104 | return (EOPNOTSUPP); |
| 105 | } |
| 106 | |
| 107 | /*ARGSUSED*/ |
| 108 | int |
| 109 | so_sendmblk_notsupp(struct sonode *so, struct msghdr *msg, int fflag, |
| 110 | struct cred *cr, mblk_t **mpp) |
| 111 | { |
| 112 | return (EOPNOTSUPP); |
| 113 | } |
| 114 | |
| 115 | /* |
| 116 | * Generic Socket Ops |
| 117 | */ |
| 118 | |
| 119 | /* ARGSUSED */ |
| 120 | int |
| 121 | so_init(struct sonode *so, struct sonode *pso, struct cred *cr, int flags) |
| 122 | { |
| 123 | return (socket_init_common(so, pso, flags, cr)); |
| 124 | } |
| 125 | |
| 126 | int |
| 127 | so_bind(struct sonode *so, struct sockaddr *name, socklen_t namelen, |
| 128 | int flags, struct cred *cr) |
| 129 | { |
| 130 | int error; |
| 131 | |
| 132 | SO_BLOCK_FALLBACK(so, SOP_BIND(so, name, namelen, flags, cr)); |
| 133 | |
| 134 | ASSERT(flags == _SOBIND_XPG4_2 || flags == _SOBIND_SOCKBSD); |
| 135 | |
| 136 | /* X/Open requires this check */ |
| 137 | if ((so->so_state & SS_CANTSENDMORE) && !xnet_skip_checks) { |
| 138 | if (xnet_check_print) { |
| 139 | printf("sockfs: X/Open bind state check " |
| 140 | "caused EINVAL\n"); |
| 141 | } |
| 142 | error = EINVAL; |
| 143 | goto done; |
| 144 | } |
| 145 | |
| 146 | /* |
| 147 | * a bind to a NULL address is interpreted as unbind. So just |
| 148 | * do the downcall. |
| 149 | */ |
| 150 | if (name == NULL) |
| 151 | goto dobind; |
| 152 | |
| 153 | switch (so->so_family) { |
| 154 | case AF_INET: |
| 155 | if ((size_t)namelen != sizeof (sin_t)) { |
| 156 | error = name->sa_family != so->so_family ? |
| 157 | EAFNOSUPPORT : EINVAL; |
| 158 | eprintsoline(so, error); |
| 159 | goto done; |
| 160 | } |
| 161 | |
| 162 | if ((flags & _SOBIND_XPG4_2) && |
| 163 | (name->sa_family != so->so_family)) { |
| 164 | /* |
| 165 | * This check has to be made for X/Open |
| 166 | * sockets however application failures have |
| 167 | * been observed when it is applied to |
| 168 | * all sockets. |
| 169 | */ |
| 170 | error = EAFNOSUPPORT; |
| 171 | eprintsoline(so, error); |
| 172 | goto done; |
| 173 | } |
| 174 | /* |
| 175 | * Force a zero sa_family to match so_family. |
| 176 | * |
Richard Lowe | bbf2155 | 2022-02-26 16:40:47 -0600 | [diff] [blame] | 177 | * Some programs like inetd(8) don't set the |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 178 | * family field. Other programs leave |
| 179 | * sin_family set to garbage - SunOS 4.X does |
| 180 | * not check the family field on a bind. |
| 181 | * We use the family field that |
| 182 | * was passed in to the socket() call. |
| 183 | */ |
| 184 | name->sa_family = so->so_family; |
| 185 | break; |
| 186 | |
| 187 | case AF_INET6: { |
| 188 | #ifdef DEBUG |
| 189 | sin6_t *sin6 = (sin6_t *)name; |
| 190 | #endif |
| 191 | if ((size_t)namelen != sizeof (sin6_t)) { |
| 192 | error = name->sa_family != so->so_family ? |
| 193 | EAFNOSUPPORT : EINVAL; |
| 194 | eprintsoline(so, error); |
| 195 | goto done; |
| 196 | } |
| 197 | |
| 198 | if (name->sa_family != so->so_family) { |
| 199 | /* |
| 200 | * With IPv6 we require the family to match |
| 201 | * unlike in IPv4. |
| 202 | */ |
| 203 | error = EAFNOSUPPORT; |
| 204 | eprintsoline(so, error); |
| 205 | goto done; |
| 206 | } |
| 207 | #ifdef DEBUG |
| 208 | /* |
| 209 | * Verify that apps don't forget to clear |
| 210 | * sin6_scope_id etc |
| 211 | */ |
| 212 | if (sin6->sin6_scope_id != 0 && |
| 213 | !IN6_IS_ADDR_LINKSCOPE(&sin6->sin6_addr)) { |
| 214 | zcmn_err(getzoneid(), CE_WARN, |
| 215 | "bind with uninitialized sin6_scope_id " |
| 216 | "(%d) on socket. Pid = %d\n", |
| 217 | (int)sin6->sin6_scope_id, |
| 218 | (int)curproc->p_pid); |
| 219 | } |
| 220 | if (sin6->__sin6_src_id != 0) { |
| 221 | zcmn_err(getzoneid(), CE_WARN, |
| 222 | "bind with uninitialized __sin6_src_id " |
| 223 | "(%d) on socket. Pid = %d\n", |
| 224 | (int)sin6->__sin6_src_id, |
| 225 | (int)curproc->p_pid); |
| 226 | } |
| 227 | #endif /* DEBUG */ |
| 228 | |
| 229 | break; |
| 230 | } |
| 231 | default: |
| 232 | /* Just pass the request to the protocol */ |
| 233 | goto dobind; |
| 234 | } |
| 235 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 236 | dobind: |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 237 | if (so->so_filter_active == 0 || |
| 238 | (error = sof_filter_bind(so, name, &namelen, cr)) < 0) { |
| 239 | error = (*so->so_downcalls->sd_bind) |
| 240 | (so->so_proto_handle, name, namelen, cr); |
| 241 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 242 | done: |
| 243 | SO_UNBLOCK_FALLBACK(so); |
| 244 | |
| 245 | return (error); |
| 246 | } |
| 247 | |
| 248 | int |
| 249 | so_listen(struct sonode *so, int backlog, struct cred *cr) |
| 250 | { |
| 251 | int error = 0; |
| 252 | |
| 253 | ASSERT(MUTEX_NOT_HELD(&so->so_lock)); |
| 254 | SO_BLOCK_FALLBACK(so, SOP_LISTEN(so, backlog, cr)); |
| 255 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 256 | if ((so)->so_filter_active == 0 || |
| 257 | (error = sof_filter_listen(so, &backlog, cr)) < 0) |
| 258 | error = (*so->so_downcalls->sd_listen)(so->so_proto_handle, |
| 259 | backlog, cr); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 260 | |
| 261 | SO_UNBLOCK_FALLBACK(so); |
| 262 | |
| 263 | return (error); |
| 264 | } |
| 265 | |
| 266 | |
| 267 | int |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 268 | so_connect(struct sonode *so, struct sockaddr *name, |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 269 | socklen_t namelen, int fflag, int flags, struct cred *cr) |
| 270 | { |
| 271 | int error = 0; |
| 272 | sock_connid_t id; |
| 273 | |
| 274 | ASSERT(MUTEX_NOT_HELD(&so->so_lock)); |
| 275 | SO_BLOCK_FALLBACK(so, SOP_CONNECT(so, name, namelen, fflag, flags, cr)); |
| 276 | |
| 277 | /* |
| 278 | * If there is a pending error, return error |
| 279 | * This can happen if a non blocking operation caused an error. |
| 280 | */ |
| 281 | |
| 282 | if (so->so_error != 0) { |
| 283 | mutex_enter(&so->so_lock); |
| 284 | error = sogeterr(so, B_TRUE); |
| 285 | mutex_exit(&so->so_lock); |
| 286 | if (error != 0) |
| 287 | goto done; |
| 288 | } |
| 289 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 290 | if (so->so_filter_active == 0 || |
| 291 | (error = sof_filter_connect(so, (struct sockaddr *)name, |
| 292 | &namelen, cr)) < 0) { |
| 293 | error = (*so->so_downcalls->sd_connect)(so->so_proto_handle, |
| 294 | name, namelen, &id, cr); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 295 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 296 | if (error == EINPROGRESS) |
| 297 | error = so_wait_connected(so, |
| 298 | fflag & (FNONBLOCK|FNDELAY), id); |
| 299 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 300 | done: |
| 301 | SO_UNBLOCK_FALLBACK(so); |
| 302 | return (error); |
| 303 | } |
| 304 | |
| 305 | /*ARGSUSED*/ |
| 306 | int |
| 307 | so_accept(struct sonode *so, int fflag, struct cred *cr, struct sonode **nsop) |
| 308 | { |
| 309 | int error = 0; |
| 310 | struct sonode *nso; |
| 311 | |
| 312 | *nsop = NULL; |
| 313 | |
| 314 | SO_BLOCK_FALLBACK(so, SOP_ACCEPT(so, fflag, cr, nsop)); |
| 315 | if ((so->so_state & SS_ACCEPTCONN) == 0) { |
| 316 | SO_UNBLOCK_FALLBACK(so); |
| 317 | return ((so->so_type == SOCK_DGRAM || so->so_type == SOCK_RAW) ? |
| 318 | EOPNOTSUPP : EINVAL); |
| 319 | } |
| 320 | |
| 321 | if ((error = so_acceptq_dequeue(so, (fflag & (FNONBLOCK|FNDELAY)), |
| 322 | &nso)) == 0) { |
| 323 | ASSERT(nso != NULL); |
| 324 | |
| 325 | /* finish the accept */ |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 326 | if ((so->so_filter_active > 0 && |
| 327 | (error = sof_filter_accept(nso, cr)) > 0) || |
| 328 | (error = (*so->so_downcalls->sd_accept)(so->so_proto_handle, |
| 329 | nso->so_proto_handle, (sock_upper_handle_t)nso, cr)) != 0) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 330 | (void) socket_close(nso, 0, cr); |
| 331 | socket_destroy(nso); |
| 332 | } else { |
| 333 | *nsop = nso; |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | SO_UNBLOCK_FALLBACK(so); |
| 338 | return (error); |
| 339 | } |
| 340 | |
| 341 | int |
| 342 | so_sendmsg(struct sonode *so, struct nmsghdr *msg, struct uio *uiop, |
| 343 | struct cred *cr) |
| 344 | { |
| 345 | int error, flags; |
| 346 | boolean_t dontblock; |
| 347 | ssize_t orig_resid; |
| 348 | mblk_t *mp; |
| 349 | |
| 350 | SO_BLOCK_FALLBACK(so, SOP_SENDMSG(so, msg, uiop, cr)); |
| 351 | |
| 352 | flags = msg->msg_flags; |
| 353 | error = 0; |
| 354 | dontblock = (flags & MSG_DONTWAIT) || |
| 355 | (uiop->uio_fmode & (FNONBLOCK|FNDELAY)); |
| 356 | |
| 357 | if (!(flags & MSG_XPG4_2) && msg->msg_controllen != 0) { |
| 358 | /* |
| 359 | * Old way of passing fd's is not supported |
| 360 | */ |
| 361 | SO_UNBLOCK_FALLBACK(so); |
| 362 | return (EOPNOTSUPP); |
| 363 | } |
| 364 | |
| 365 | if ((so->so_mode & SM_ATOMIC) && |
| 366 | uiop->uio_resid > so->so_proto_props.sopp_maxpsz && |
| 367 | so->so_proto_props.sopp_maxpsz != -1) { |
| 368 | SO_UNBLOCK_FALLBACK(so); |
| 369 | return (EMSGSIZE); |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * For atomic sends we will only do one iteration. |
| 374 | */ |
| 375 | do { |
| 376 | if (so->so_state & SS_CANTSENDMORE) { |
| 377 | error = EPIPE; |
| 378 | break; |
| 379 | } |
| 380 | |
| 381 | if (so->so_error != 0) { |
| 382 | mutex_enter(&so->so_lock); |
| 383 | error = sogeterr(so, B_TRUE); |
| 384 | mutex_exit(&so->so_lock); |
| 385 | if (error != 0) |
| 386 | break; |
| 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Send down OOB messages even if the send path is being |
| 391 | * flow controlled (assuming the protocol supports OOB data). |
| 392 | */ |
| 393 | if (flags & MSG_OOB) { |
| 394 | if ((so->so_mode & SM_EXDATA) == 0) { |
| 395 | error = EOPNOTSUPP; |
| 396 | break; |
| 397 | } |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 398 | } else if (SO_SND_FLOWCTRLD(so)) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 399 | /* |
| 400 | * Need to wait until the protocol is ready to receive |
| 401 | * more data for transmission. |
| 402 | */ |
| 403 | if ((error = so_snd_wait_qnotfull(so, dontblock)) != 0) |
| 404 | break; |
| 405 | } |
| 406 | |
| 407 | /* |
| 408 | * Time to send data to the protocol. We either copy the |
| 409 | * data into mblks or pass the uio directly to the protocol. |
| 410 | * We decide what to do based on the available down calls. |
| 411 | */ |
| 412 | if (so->so_downcalls->sd_send_uio != NULL) { |
| 413 | error = (*so->so_downcalls->sd_send_uio) |
| 414 | (so->so_proto_handle, uiop, msg, cr); |
| 415 | if (error != 0) |
| 416 | break; |
| 417 | } else { |
| 418 | /* save the resid in case of failure */ |
| 419 | orig_resid = uiop->uio_resid; |
| 420 | |
| 421 | if ((mp = socopyinuio(uiop, |
| 422 | so->so_proto_props.sopp_maxpsz, |
| 423 | so->so_proto_props.sopp_wroff, |
| 424 | so->so_proto_props.sopp_maxblk, |
Erik Nordmark | bd670b3 | 2009-11-11 11:49:49 -0800 | [diff] [blame] | 425 | so->so_proto_props.sopp_tail, &error)) == NULL) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 426 | break; |
| 427 | } |
| 428 | ASSERT(uiop->uio_resid >= 0); |
| 429 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 430 | if (so->so_filter_active > 0 && |
| 431 | ((mp = SOF_FILTER_DATA_OUT(so, mp, msg, cr, |
| 432 | &error)) == NULL)) { |
| 433 | if (error != 0) |
| 434 | break; |
| 435 | continue; |
| 436 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 437 | error = (*so->so_downcalls->sd_send) |
| 438 | (so->so_proto_handle, mp, msg, cr); |
| 439 | if (error != 0) { |
| 440 | /* |
| 441 | * The send failed. We do not have to free the |
| 442 | * mblks, because that is the protocol's |
| 443 | * responsibility. However, uio_resid must |
| 444 | * remain accurate, so adjust that here. |
| 445 | */ |
| 446 | uiop->uio_resid = orig_resid; |
| 447 | break; |
| 448 | } |
| 449 | } |
| 450 | } while (uiop->uio_resid > 0); |
| 451 | |
| 452 | SO_UNBLOCK_FALLBACK(so); |
| 453 | |
| 454 | return (error); |
| 455 | } |
| 456 | |
| 457 | int |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 458 | so_sendmblk_impl(struct sonode *so, struct nmsghdr *msg, int fflag, |
| 459 | struct cred *cr, mblk_t **mpp, sof_instance_t *fil, |
| 460 | boolean_t fil_inject) |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 461 | { |
| 462 | int error; |
| 463 | boolean_t dontblock; |
| 464 | size_t size; |
| 465 | mblk_t *mp = *mpp; |
| 466 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 467 | if (so->so_downcalls->sd_send == NULL) |
| 468 | return (EOPNOTSUPP); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 469 | |
| 470 | error = 0; |
| 471 | dontblock = (msg->msg_flags & MSG_DONTWAIT) || |
| 472 | (fflag & (FNONBLOCK|FNDELAY)); |
| 473 | size = msgdsize(mp); |
| 474 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 475 | if ((so->so_mode & SM_ATOMIC) && |
| 476 | size > so->so_proto_props.sopp_maxpsz && |
| 477 | so->so_proto_props.sopp_maxpsz != -1) { |
| 478 | SO_UNBLOCK_FALLBACK(so); |
| 479 | return (EMSGSIZE); |
| 480 | } |
| 481 | |
| 482 | while (mp != NULL) { |
| 483 | mblk_t *nmp, *last_mblk; |
| 484 | size_t mlen; |
| 485 | |
| 486 | if (so->so_state & SS_CANTSENDMORE) { |
| 487 | error = EPIPE; |
| 488 | break; |
| 489 | } |
| 490 | if (so->so_error != 0) { |
| 491 | mutex_enter(&so->so_lock); |
| 492 | error = sogeterr(so, B_TRUE); |
| 493 | mutex_exit(&so->so_lock); |
| 494 | if (error != 0) |
| 495 | break; |
| 496 | } |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 497 | /* Socket filters are not flow controlled */ |
| 498 | if (SO_SND_FLOWCTRLD(so) && !fil_inject) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 499 | /* |
| 500 | * Need to wait until the protocol is ready to receive |
| 501 | * more data for transmission. |
| 502 | */ |
| 503 | if ((error = so_snd_wait_qnotfull(so, dontblock)) != 0) |
| 504 | break; |
| 505 | } |
| 506 | |
| 507 | /* |
| 508 | * We only allow so_maxpsz of data to be sent down to |
| 509 | * the protocol at time. |
| 510 | */ |
| 511 | mlen = MBLKL(mp); |
| 512 | nmp = mp->b_cont; |
| 513 | last_mblk = mp; |
| 514 | while (nmp != NULL) { |
| 515 | mlen += MBLKL(nmp); |
| 516 | if (mlen > so->so_proto_props.sopp_maxpsz) { |
| 517 | last_mblk->b_cont = NULL; |
| 518 | break; |
| 519 | } |
| 520 | last_mblk = nmp; |
| 521 | nmp = nmp->b_cont; |
| 522 | } |
| 523 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 524 | if (so->so_filter_active > 0 && |
| 525 | (mp = SOF_FILTER_DATA_OUT_FROM(so, fil, mp, msg, |
| 526 | cr, &error)) == NULL) { |
| 527 | *mpp = mp = nmp; |
| 528 | if (error != 0) |
| 529 | break; |
| 530 | continue; |
| 531 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 532 | error = (*so->so_downcalls->sd_send) |
| 533 | (so->so_proto_handle, mp, msg, cr); |
| 534 | if (error != 0) { |
| 535 | /* |
| 536 | * The send failed. The protocol will free the mblks |
| 537 | * that were sent down. Let the caller deal with the |
| 538 | * rest. |
| 539 | */ |
| 540 | *mpp = nmp; |
| 541 | break; |
| 542 | } |
| 543 | |
| 544 | *mpp = mp = nmp; |
| 545 | } |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 546 | /* Let the filter know whether the protocol is flow controlled */ |
| 547 | if (fil_inject && error == 0 && SO_SND_FLOWCTRLD(so)) |
| 548 | error = ENOSPC; |
| 549 | |
| 550 | return (error); |
| 551 | } |
| 552 | |
| 553 | #pragma inline(so_sendmblk_impl) |
| 554 | |
| 555 | int |
| 556 | so_sendmblk(struct sonode *so, struct nmsghdr *msg, int fflag, |
| 557 | struct cred *cr, mblk_t **mpp) |
| 558 | { |
| 559 | int error; |
| 560 | |
| 561 | SO_BLOCK_FALLBACK(so, SOP_SENDMBLK(so, msg, fflag, cr, mpp)); |
| 562 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 563 | error = so_sendmblk_impl(so, msg, fflag, cr, mpp, so->so_filter_top, |
| 564 | B_FALSE); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 565 | |
| 566 | SO_UNBLOCK_FALLBACK(so); |
| 567 | |
| 568 | return (error); |
| 569 | } |
| 570 | |
| 571 | int |
| 572 | so_shutdown(struct sonode *so, int how, struct cred *cr) |
| 573 | { |
| 574 | int error; |
| 575 | |
| 576 | SO_BLOCK_FALLBACK(so, SOP_SHUTDOWN(so, how, cr)); |
| 577 | |
| 578 | /* |
| 579 | * SunOS 4.X has no check for datagram sockets. |
| 580 | * 5.X checks that it is connected (ENOTCONN) |
| 581 | * X/Open requires that we check the connected state. |
| 582 | */ |
| 583 | if (!(so->so_state & SS_ISCONNECTED)) { |
| 584 | if (!xnet_skip_checks) { |
| 585 | error = ENOTCONN; |
| 586 | if (xnet_check_print) { |
| 587 | printf("sockfs: X/Open shutdown check " |
| 588 | "caused ENOTCONN\n"); |
| 589 | } |
| 590 | } |
| 591 | goto done; |
| 592 | } |
| 593 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 594 | if (so->so_filter_active == 0 || |
| 595 | (error = sof_filter_shutdown(so, &how, cr)) < 0) |
| 596 | error = ((*so->so_downcalls->sd_shutdown)(so->so_proto_handle, |
| 597 | how, cr)); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 598 | |
| 599 | /* |
| 600 | * Protocol agreed to shutdown. We need to flush the |
| 601 | * receive buffer if the receive side is being shutdown. |
| 602 | */ |
| 603 | if (error == 0 && how != SHUT_WR) { |
| 604 | mutex_enter(&so->so_lock); |
| 605 | /* wait for active reader to finish */ |
| 606 | (void) so_lock_read(so, 0); |
| 607 | |
| 608 | so_rcv_flush(so); |
| 609 | |
| 610 | so_unlock_read(so); |
| 611 | mutex_exit(&so->so_lock); |
| 612 | } |
| 613 | |
| 614 | done: |
| 615 | SO_UNBLOCK_FALLBACK(so); |
| 616 | return (error); |
| 617 | } |
| 618 | |
| 619 | int |
| 620 | so_getsockname(struct sonode *so, struct sockaddr *addr, |
| 621 | socklen_t *addrlen, struct cred *cr) |
| 622 | { |
| 623 | int error; |
| 624 | |
| 625 | SO_BLOCK_FALLBACK(so, SOP_GETSOCKNAME(so, addr, addrlen, cr)); |
| 626 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 627 | if (so->so_filter_active == 0 || |
| 628 | (error = sof_filter_getsockname(so, addr, addrlen, cr)) < 0) |
| 629 | error = (*so->so_downcalls->sd_getsockname) |
| 630 | (so->so_proto_handle, addr, addrlen, cr); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 631 | |
| 632 | SO_UNBLOCK_FALLBACK(so); |
| 633 | return (error); |
| 634 | } |
| 635 | |
| 636 | int |
| 637 | so_getpeername(struct sonode *so, struct sockaddr *addr, |
| 638 | socklen_t *addrlen, boolean_t accept, struct cred *cr) |
| 639 | { |
| 640 | int error; |
| 641 | |
| 642 | SO_BLOCK_FALLBACK(so, SOP_GETPEERNAME(so, addr, addrlen, accept, cr)); |
| 643 | |
| 644 | if (accept) { |
| 645 | error = (*so->so_downcalls->sd_getpeername) |
| 646 | (so->so_proto_handle, addr, addrlen, cr); |
| 647 | } else if (!(so->so_state & SS_ISCONNECTED)) { |
| 648 | error = ENOTCONN; |
| 649 | } else if ((so->so_state & SS_CANTSENDMORE) && !xnet_skip_checks) { |
| 650 | /* Added this check for X/Open */ |
| 651 | error = EINVAL; |
| 652 | if (xnet_check_print) { |
| 653 | printf("sockfs: X/Open getpeername check => EINVAL\n"); |
| 654 | } |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 655 | } else if (so->so_filter_active == 0 || |
| 656 | (error = sof_filter_getpeername(so, addr, addrlen, cr)) < 0) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 657 | error = (*so->so_downcalls->sd_getpeername) |
| 658 | (so->so_proto_handle, addr, addrlen, cr); |
| 659 | } |
| 660 | |
| 661 | SO_UNBLOCK_FALLBACK(so); |
| 662 | return (error); |
| 663 | } |
| 664 | |
| 665 | int |
| 666 | so_getsockopt(struct sonode *so, int level, int option_name, |
| 667 | void *optval, socklen_t *optlenp, int flags, struct cred *cr) |
| 668 | { |
| 669 | int error = 0; |
| 670 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 671 | if (level == SOL_FILTER) |
| 672 | return (sof_getsockopt(so, option_name, optval, optlenp, cr)); |
| 673 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 674 | SO_BLOCK_FALLBACK(so, |
| 675 | SOP_GETSOCKOPT(so, level, option_name, optval, optlenp, flags, cr)); |
| 676 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 677 | if ((so->so_filter_active == 0 || |
| 678 | (error = sof_filter_getsockopt(so, level, option_name, optval, |
| 679 | optlenp, cr)) < 0) && |
| 680 | (error = socket_getopt_common(so, level, option_name, optval, |
| 681 | optlenp, flags)) < 0) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 682 | error = (*so->so_downcalls->sd_getsockopt) |
| 683 | (so->so_proto_handle, level, option_name, optval, optlenp, |
| 684 | cr); |
| 685 | if (error == ENOPROTOOPT) { |
| 686 | if (level == SOL_SOCKET) { |
| 687 | /* |
| 688 | * If a protocol does not support a particular |
| 689 | * socket option, set can fail (not allowed) |
| 690 | * but get can not fail. This is the previous |
| 691 | * sockfs bahvior. |
| 692 | */ |
| 693 | switch (option_name) { |
| 694 | case SO_LINGER: |
| 695 | if (*optlenp < (t_uscalar_t) |
| 696 | sizeof (struct linger)) { |
| 697 | error = EINVAL; |
| 698 | break; |
| 699 | } |
| 700 | error = 0; |
| 701 | bzero(optval, sizeof (struct linger)); |
| 702 | *optlenp = sizeof (struct linger); |
| 703 | break; |
| 704 | case SO_RCVTIMEO: |
| 705 | case SO_SNDTIMEO: |
| 706 | if (*optlenp < (t_uscalar_t) |
| 707 | sizeof (struct timeval)) { |
| 708 | error = EINVAL; |
| 709 | break; |
| 710 | } |
| 711 | error = 0; |
| 712 | bzero(optval, sizeof (struct timeval)); |
| 713 | *optlenp = sizeof (struct timeval); |
| 714 | break; |
| 715 | case SO_SND_BUFINFO: |
| 716 | if (*optlenp < (t_uscalar_t) |
| 717 | sizeof (struct so_snd_bufinfo)) { |
| 718 | error = EINVAL; |
| 719 | break; |
| 720 | } |
| 721 | error = 0; |
| 722 | bzero(optval, |
| 723 | sizeof (struct so_snd_bufinfo)); |
| 724 | *optlenp = |
| 725 | sizeof (struct so_snd_bufinfo); |
| 726 | break; |
| 727 | case SO_DEBUG: |
| 728 | case SO_REUSEADDR: |
| 729 | case SO_KEEPALIVE: |
| 730 | case SO_DONTROUTE: |
| 731 | case SO_BROADCAST: |
| 732 | case SO_USELOOPBACK: |
| 733 | case SO_OOBINLINE: |
| 734 | case SO_DGRAM_ERRIND: |
| 735 | case SO_SNDBUF: |
| 736 | case SO_RCVBUF: |
| 737 | error = 0; |
| 738 | *((int32_t *)optval) = 0; |
| 739 | *optlenp = sizeof (int32_t); |
| 740 | break; |
| 741 | default: |
| 742 | break; |
| 743 | } |
| 744 | } |
| 745 | } |
| 746 | } |
| 747 | |
| 748 | SO_UNBLOCK_FALLBACK(so); |
| 749 | return (error); |
| 750 | } |
| 751 | |
| 752 | int |
| 753 | so_setsockopt(struct sonode *so, int level, int option_name, |
| 754 | const void *optval, socklen_t optlen, struct cred *cr) |
| 755 | { |
| 756 | int error = 0; |
anders | 3986c91 | 2009-01-23 16:32:20 -0800 | [diff] [blame] | 757 | struct timeval tl; |
| 758 | const void *opt = optval; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 759 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 760 | if (level == SOL_FILTER) |
| 761 | return (sof_setsockopt(so, option_name, optval, optlen, cr)); |
| 762 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 763 | SO_BLOCK_FALLBACK(so, |
| 764 | SOP_SETSOCKOPT(so, level, option_name, optval, optlen, cr)); |
| 765 | |
| 766 | /* X/Open requires this check */ |
| 767 | if (so->so_state & SS_CANTSENDMORE && !xnet_skip_checks) { |
| 768 | SO_UNBLOCK_FALLBACK(so); |
| 769 | if (xnet_check_print) |
| 770 | printf("sockfs: X/Open setsockopt check => EINVAL\n"); |
| 771 | return (EINVAL); |
| 772 | } |
| 773 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 774 | if (so->so_filter_active > 0 && |
| 775 | (error = sof_filter_setsockopt(so, level, option_name, |
| 776 | (void *)optval, &optlen, cr)) >= 0) |
| 777 | goto done; |
| 778 | |
Yu Xiangning | a5adac4 | 2008-12-29 13:56:29 +0800 | [diff] [blame] | 779 | if (level == SOL_SOCKET) { |
| 780 | switch (option_name) { |
| 781 | case SO_RCVTIMEO: |
| 782 | case SO_SNDTIMEO: { |
shenjian | 34dfe68 | 2009-01-21 10:04:42 +0800 | [diff] [blame] | 783 | /* |
| 784 | * We pass down these two options to protocol in order |
| 785 | * to support some third part protocols which need to |
| 786 | * know them. For those protocols which don't care |
| 787 | * these two options, simply return 0. |
| 788 | */ |
Yu Xiangning | a5adac4 | 2008-12-29 13:56:29 +0800 | [diff] [blame] | 789 | clock_t t_usec; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 790 | |
shenjian | e5083e8 | 2009-01-20 14:46:11 +0800 | [diff] [blame] | 791 | if (get_udatamodel() == DATAMODEL_NONE || |
| 792 | get_udatamodel() == DATAMODEL_NATIVE) { |
shenjian | 22238f7 | 2009-01-07 13:45:08 +0800 | [diff] [blame] | 793 | if (optlen != sizeof (struct timeval)) { |
| 794 | error = EINVAL; |
| 795 | goto done; |
| 796 | } |
| 797 | bcopy((struct timeval *)optval, &tl, |
| 798 | sizeof (struct timeval)); |
| 799 | } else { |
| 800 | if (optlen != sizeof (struct timeval32)) { |
| 801 | error = EINVAL; |
| 802 | goto done; |
| 803 | } |
| 804 | TIMEVAL32_TO_TIMEVAL(&tl, |
| 805 | (struct timeval32 *)optval); |
Yu Xiangning | a5adac4 | 2008-12-29 13:56:29 +0800 | [diff] [blame] | 806 | } |
anders | 3986c91 | 2009-01-23 16:32:20 -0800 | [diff] [blame] | 807 | opt = &tl; |
| 808 | optlen = sizeof (tl); |
shenjian | 22238f7 | 2009-01-07 13:45:08 +0800 | [diff] [blame] | 809 | t_usec = tl.tv_sec * 1000 * 1000 + tl.tv_usec; |
Yu Xiangning | a5adac4 | 2008-12-29 13:56:29 +0800 | [diff] [blame] | 810 | mutex_enter(&so->so_lock); |
| 811 | if (option_name == SO_RCVTIMEO) |
| 812 | so->so_rcvtimeo = drv_usectohz(t_usec); |
| 813 | else |
| 814 | so->so_sndtimeo = drv_usectohz(t_usec); |
| 815 | mutex_exit(&so->so_lock); |
shenjian | 34dfe68 | 2009-01-21 10:04:42 +0800 | [diff] [blame] | 816 | break; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 817 | } |
Yu Xiangning | a5adac4 | 2008-12-29 13:56:29 +0800 | [diff] [blame] | 818 | case SO_RCVBUF: |
| 819 | /* |
| 820 | * XXX XPG 4.2 applications retrieve SO_RCVBUF from |
| 821 | * sockfs since the transport might adjust the value |
| 822 | * and not return exactly what was set by the |
| 823 | * application. |
| 824 | */ |
| 825 | so->so_xpg_rcvbuf = *(int32_t *)optval; |
| 826 | break; |
| 827 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 828 | } |
| 829 | error = (*so->so_downcalls->sd_setsockopt) |
anders | 3986c91 | 2009-01-23 16:32:20 -0800 | [diff] [blame] | 830 | (so->so_proto_handle, level, option_name, opt, optlen, cr); |
shenjian | 22238f7 | 2009-01-07 13:45:08 +0800 | [diff] [blame] | 831 | done: |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 832 | SO_UNBLOCK_FALLBACK(so); |
| 833 | return (error); |
| 834 | } |
| 835 | |
| 836 | int |
| 837 | so_ioctl(struct sonode *so, int cmd, intptr_t arg, int mode, |
| 838 | struct cred *cr, int32_t *rvalp) |
| 839 | { |
| 840 | int error = 0; |
| 841 | |
| 842 | SO_BLOCK_FALLBACK(so, SOP_IOCTL(so, cmd, arg, mode, cr, rvalp)); |
| 843 | |
| 844 | /* |
| 845 | * If there is a pending error, return error |
| 846 | * This can happen if a non blocking operation caused an error. |
| 847 | */ |
| 848 | if (so->so_error != 0) { |
| 849 | mutex_enter(&so->so_lock); |
| 850 | error = sogeterr(so, B_TRUE); |
| 851 | mutex_exit(&so->so_lock); |
| 852 | if (error != 0) |
| 853 | goto done; |
| 854 | } |
| 855 | |
| 856 | /* |
| 857 | * calling strioc can result in the socket falling back to TPI, |
| 858 | * if that is supported. |
| 859 | */ |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 860 | if ((so->so_filter_active == 0 || |
| 861 | (error = sof_filter_ioctl(so, cmd, arg, mode, |
| 862 | rvalp, cr)) < 0) && |
| 863 | (error = socket_ioctl_common(so, cmd, arg, mode, cr, rvalp)) < 0 && |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 864 | (error = socket_strioc_common(so, cmd, arg, mode, cr, rvalp)) < 0) { |
| 865 | error = (*so->so_downcalls->sd_ioctl)(so->so_proto_handle, |
| 866 | cmd, arg, mode, rvalp, cr); |
| 867 | } |
| 868 | |
| 869 | done: |
| 870 | SO_UNBLOCK_FALLBACK(so); |
| 871 | |
| 872 | return (error); |
| 873 | } |
| 874 | |
| 875 | int |
| 876 | so_poll(struct sonode *so, short events, int anyyet, short *reventsp, |
| 877 | struct pollhead **phpp) |
| 878 | { |
Bryan Cantrill | 68846fd | 2014-02-24 17:05:14 +0000 | [diff] [blame] | 879 | int state = so->so_state, mask; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 880 | *reventsp = 0; |
| 881 | |
Rao Shoaib | af89d82 | 2009-02-19 14:26:35 -0800 | [diff] [blame] | 882 | /* |
| 883 | * In sockets the errors are represented as input/output events |
| 884 | */ |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 885 | if (so->so_error != 0 && |
Rao Shoaib | af89d82 | 2009-02-19 14:26:35 -0800 | [diff] [blame] | 886 | ((POLLIN|POLLRDNORM|POLLOUT) & events) != 0) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 887 | *reventsp = (POLLIN|POLLRDNORM|POLLOUT) & events; |
| 888 | return (0); |
| 889 | } |
| 890 | |
| 891 | /* |
Rao Shoaib | af89d82 | 2009-02-19 14:26:35 -0800 | [diff] [blame] | 892 | * If the socket is in a state where it can send data |
| 893 | * turn on POLLWRBAND and POLLOUT events. |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 894 | */ |
Rao Shoaib | af89d82 | 2009-02-19 14:26:35 -0800 | [diff] [blame] | 895 | if ((so->so_mode & SM_CONNREQUIRED) == 0 || (state & SS_ISCONNECTED)) { |
| 896 | /* |
| 897 | * out of band data is allowed even if the connection |
| 898 | * is flow controlled |
| 899 | */ |
| 900 | *reventsp |= POLLWRBAND & events; |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 901 | if (!SO_SND_FLOWCTRLD(so)) { |
Rao Shoaib | af89d82 | 2009-02-19 14:26:35 -0800 | [diff] [blame] | 902 | /* |
| 903 | * As long as there is buffer to send data |
| 904 | * turn on POLLOUT events |
| 905 | */ |
| 906 | *reventsp |= POLLOUT & events; |
| 907 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | /* |
| 911 | * Turn on POLLIN whenever there is data on the receive queue, |
| 912 | * or the socket is in a state where no more data will be received. |
| 913 | * Also, if the socket is accepting connections, flip the bit if |
| 914 | * there is something on the queue. |
anders | f026758 | 2008-12-20 22:46:32 -0800 | [diff] [blame] | 915 | * |
| 916 | * We do an initial check for events without holding locks. However, |
| 917 | * if there are no event available, then we redo the check for POLLIN |
| 918 | * events under the lock. |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 919 | */ |
| 920 | |
| 921 | /* Pending connections */ |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 922 | if (!list_is_empty(&so->so_acceptq_list)) |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 923 | *reventsp |= (POLLIN|POLLRDNORM) & events; |
| 924 | |
Bryan Cantrill | a5eb710 | 2015-02-14 16:55:35 -0800 | [diff] [blame] | 925 | /* |
| 926 | * If we're looking for POLLRDHUP, indicate it if we have sent the |
| 927 | * last rx signal for the socket. |
| 928 | */ |
| 929 | if ((events & POLLRDHUP) && (state & SS_SENTLASTREADSIG)) |
| 930 | *reventsp |= POLLRDHUP; |
| 931 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 932 | /* Data */ |
| 933 | /* so_downcalls is null for sctp */ |
| 934 | if (so->so_downcalls != NULL && so->so_downcalls->sd_poll != NULL) { |
| 935 | *reventsp |= (*so->so_downcalls->sd_poll) |
| 936 | (so->so_proto_handle, events & SO_PROTO_POLLEV, anyyet, |
| 937 | CRED()) & events; |
| 938 | ASSERT((*reventsp & ~events) == 0); |
| 939 | /* do not recheck events */ |
| 940 | events &= ~SO_PROTO_POLLEV; |
| 941 | } else { |
| 942 | if (SO_HAVE_DATA(so)) |
| 943 | *reventsp |= (POLLIN|POLLRDNORM) & events; |
| 944 | |
| 945 | /* Urgent data */ |
Rao Shoaib | af89d82 | 2009-02-19 14:26:35 -0800 | [diff] [blame] | 946 | if ((state & SS_OOBPEND) != 0) { |
| 947 | *reventsp |= (POLLRDBAND | POLLPRI) & events; |
| 948 | } |
Bryan Cantrill | 68846fd | 2014-02-24 17:05:14 +0000 | [diff] [blame] | 949 | |
| 950 | /* |
| 951 | * If the socket has become disconnected, we set POLLHUP. |
| 952 | * Note that if we are in this state, we will have set POLLIN |
| 953 | * (SO_HAVE_DATA() is true on a disconnected socket), but not |
| 954 | * POLLOUT (SS_ISCONNECTED is false). This is in keeping with |
| 955 | * the semantics of POLLHUP, which is defined to be mutually |
| 956 | * exclusive with respect to POLLOUT but not POLLIN. We are |
| 957 | * therefore setting POLLHUP primarily for the benefit of |
| 958 | * those not polling on POLLIN, as they have no other way of |
| 959 | * knowing that the socket has been disconnected. |
| 960 | */ |
| 961 | mask = SS_SENTLASTREADSIG | SS_SENTLASTWRITESIG; |
| 962 | |
| 963 | if ((state & (mask | SS_ISCONNECTED)) == mask) |
| 964 | *reventsp |= POLLHUP; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 965 | } |
| 966 | |
Bryan Cantrill | a5eb710 | 2015-02-14 16:55:35 -0800 | [diff] [blame] | 967 | if ((!*reventsp && !anyyet) || (events & POLLET)) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 968 | /* Check for read events again, but this time under lock */ |
| 969 | if (events & (POLLIN|POLLRDNORM)) { |
| 970 | mutex_enter(&so->so_lock); |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 971 | if (SO_HAVE_DATA(so) || |
| 972 | !list_is_empty(&so->so_acceptq_list)) { |
Bryan Cantrill | a5eb710 | 2015-02-14 16:55:35 -0800 | [diff] [blame] | 973 | if (events & POLLET) { |
| 974 | so->so_pollev |= SO_POLLEV_IN; |
| 975 | *phpp = &so->so_poll_list; |
| 976 | } |
| 977 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 978 | mutex_exit(&so->so_lock); |
| 979 | *reventsp |= (POLLIN|POLLRDNORM) & events; |
Bryan Cantrill | a5eb710 | 2015-02-14 16:55:35 -0800 | [diff] [blame] | 980 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 981 | return (0); |
| 982 | } else { |
| 983 | so->so_pollev |= SO_POLLEV_IN; |
| 984 | mutex_exit(&so->so_lock); |
| 985 | } |
| 986 | } |
| 987 | *phpp = &so->so_poll_list; |
| 988 | } |
| 989 | return (0); |
| 990 | } |
| 991 | |
| 992 | /* |
| 993 | * Generic Upcalls |
| 994 | */ |
| 995 | void |
| 996 | so_connected(sock_upper_handle_t sock_handle, sock_connid_t id, |
| 997 | cred_t *peer_cred, pid_t peer_cpid) |
| 998 | { |
| 999 | struct sonode *so = (struct sonode *)sock_handle; |
| 1000 | |
| 1001 | mutex_enter(&so->so_lock); |
| 1002 | ASSERT(so->so_proto_handle != NULL); |
| 1003 | |
| 1004 | if (peer_cred != NULL) { |
| 1005 | if (so->so_peercred != NULL) |
| 1006 | crfree(so->so_peercred); |
| 1007 | crhold(peer_cred); |
| 1008 | so->so_peercred = peer_cred; |
| 1009 | so->so_cpid = peer_cpid; |
| 1010 | } |
| 1011 | |
| 1012 | so->so_proto_connid = id; |
| 1013 | soisconnected(so); |
| 1014 | /* |
| 1015 | * Wake ones who're waiting for conn to become established. |
| 1016 | */ |
| 1017 | so_notify_connected(so); |
| 1018 | } |
| 1019 | |
| 1020 | int |
| 1021 | so_disconnected(sock_upper_handle_t sock_handle, sock_connid_t id, int error) |
| 1022 | { |
| 1023 | struct sonode *so = (struct sonode *)sock_handle; |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1024 | boolean_t connect_failed; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1025 | |
| 1026 | mutex_enter(&so->so_lock); |
Bryan Cantrill | 68846fd | 2014-02-24 17:05:14 +0000 | [diff] [blame] | 1027 | |
| 1028 | /* |
| 1029 | * If we aren't currently connected, then this isn't a disconnect but |
| 1030 | * rather a failure to connect. |
| 1031 | */ |
| 1032 | connect_failed = !(so->so_state & SS_ISCONNECTED); |
| 1033 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1034 | so->so_proto_connid = id; |
| 1035 | soisdisconnected(so, error); |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1036 | so_notify_disconnected(so, connect_failed, error); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1037 | |
| 1038 | return (0); |
| 1039 | } |
| 1040 | |
| 1041 | void |
| 1042 | so_opctl(sock_upper_handle_t sock_handle, sock_opctl_action_t action, |
| 1043 | uintptr_t arg) |
| 1044 | { |
| 1045 | struct sonode *so = (struct sonode *)sock_handle; |
| 1046 | |
| 1047 | switch (action) { |
| 1048 | case SOCK_OPCTL_SHUT_SEND: |
| 1049 | mutex_enter(&so->so_lock); |
| 1050 | socantsendmore(so); |
| 1051 | so_notify_disconnecting(so); |
| 1052 | break; |
| 1053 | case SOCK_OPCTL_SHUT_RECV: { |
| 1054 | mutex_enter(&so->so_lock); |
| 1055 | socantrcvmore(so); |
| 1056 | so_notify_eof(so); |
| 1057 | break; |
| 1058 | } |
| 1059 | case SOCK_OPCTL_ENAB_ACCEPT: |
| 1060 | mutex_enter(&so->so_lock); |
| 1061 | so->so_state |= SS_ACCEPTCONN; |
| 1062 | so->so_backlog = (unsigned int)arg; |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1063 | /* |
| 1064 | * The protocol can stop generating newconn upcalls when |
| 1065 | * the backlog is full, so to make sure the listener does |
| 1066 | * not end up with a queue full of deferred connections |
| 1067 | * we reduce the backlog by one. Thus the listener will |
| 1068 | * start closing deferred connections before the backlog |
| 1069 | * is full. |
| 1070 | */ |
| 1071 | if (so->so_filter_active > 0) |
| 1072 | so->so_backlog = MAX(1, so->so_backlog - 1); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1073 | mutex_exit(&so->so_lock); |
| 1074 | break; |
| 1075 | default: |
| 1076 | ASSERT(0); |
| 1077 | break; |
| 1078 | } |
| 1079 | } |
| 1080 | |
| 1081 | void |
| 1082 | so_txq_full(sock_upper_handle_t sock_handle, boolean_t qfull) |
| 1083 | { |
| 1084 | struct sonode *so = (struct sonode *)sock_handle; |
| 1085 | |
| 1086 | if (qfull) { |
| 1087 | so_snd_qfull(so); |
| 1088 | } else { |
| 1089 | so_snd_qnotfull(so); |
| 1090 | mutex_enter(&so->so_lock); |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1091 | /* so_notify_writable drops so_lock */ |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1092 | so_notify_writable(so); |
| 1093 | } |
| 1094 | } |
| 1095 | |
| 1096 | sock_upper_handle_t |
| 1097 | so_newconn(sock_upper_handle_t parenthandle, |
| 1098 | sock_lower_handle_t proto_handle, sock_downcalls_t *sock_downcalls, |
| 1099 | struct cred *peer_cred, pid_t peer_cpid, sock_upcalls_t **sock_upcallsp) |
| 1100 | { |
| 1101 | struct sonode *so = (struct sonode *)parenthandle; |
| 1102 | struct sonode *nso; |
| 1103 | int error; |
| 1104 | |
| 1105 | ASSERT(proto_handle != NULL); |
| 1106 | |
| 1107 | if ((so->so_state & SS_ACCEPTCONN) == 0 || |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1108 | (so->so_acceptq_len >= so->so_backlog && |
| 1109 | (so->so_filter_active == 0 || !sof_sonode_drop_deferred(so)))) { |
| 1110 | return (NULL); |
| 1111 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1112 | |
| 1113 | nso = socket_newconn(so, proto_handle, sock_downcalls, SOCKET_NOSLEEP, |
| 1114 | &error); |
| 1115 | if (nso == NULL) |
| 1116 | return (NULL); |
| 1117 | |
| 1118 | if (peer_cred != NULL) { |
| 1119 | crhold(peer_cred); |
| 1120 | nso->so_peercred = peer_cred; |
| 1121 | nso->so_cpid = peer_cpid; |
| 1122 | } |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1123 | nso->so_listener = so; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1124 | |
Anders Persson | d68ef20 | 2009-02-13 18:28:50 -0800 | [diff] [blame] | 1125 | /* |
| 1126 | * The new socket (nso), proto_handle and sock_upcallsp are all |
| 1127 | * valid at this point. But as soon as nso is placed in the accept |
| 1128 | * queue that can no longer be assumed (since an accept() thread may |
| 1129 | * pull it off the queue and close the socket). |
| 1130 | */ |
| 1131 | *sock_upcallsp = &so_upcalls; |
| 1132 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1133 | mutex_enter(&so->so_acceptq_lock); |
| 1134 | if (so->so_state & (SS_CLOSING|SS_FALLBACK_PENDING|SS_FALLBACK_COMP)) { |
| 1135 | mutex_exit(&so->so_acceptq_lock); |
| 1136 | ASSERT(nso->so_count == 1); |
| 1137 | nso->so_count--; |
Anders Persson | b1cd787 | 2010-07-15 21:01:20 -0700 | [diff] [blame] | 1138 | nso->so_listener = NULL; |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1139 | /* drop proto ref */ |
| 1140 | VN_RELE(SOTOV(nso)); |
| 1141 | socket_destroy(nso); |
| 1142 | return (NULL); |
| 1143 | } else { |
| 1144 | so->so_acceptq_len++; |
| 1145 | if (nso->so_state & SS_FIL_DEFER) { |
| 1146 | list_insert_tail(&so->so_acceptq_defer, nso); |
| 1147 | mutex_exit(&so->so_acceptq_lock); |
| 1148 | } else { |
| 1149 | list_insert_tail(&so->so_acceptq_list, nso); |
| 1150 | cv_signal(&so->so_acceptq_cv); |
| 1151 | mutex_exit(&so->so_acceptq_lock); |
| 1152 | mutex_enter(&so->so_lock); |
| 1153 | so_notify_newconn(so); |
| 1154 | } |
Anders Persson | d68ef20 | 2009-02-13 18:28:50 -0800 | [diff] [blame] | 1155 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1156 | return ((sock_upper_handle_t)nso); |
| 1157 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1158 | } |
| 1159 | |
| 1160 | void |
| 1161 | so_set_prop(sock_upper_handle_t sock_handle, struct sock_proto_props *soppp) |
| 1162 | { |
| 1163 | struct sonode *so; |
| 1164 | |
| 1165 | so = (struct sonode *)sock_handle; |
| 1166 | |
| 1167 | mutex_enter(&so->so_lock); |
| 1168 | |
| 1169 | if (soppp->sopp_flags & SOCKOPT_MAXBLK) |
| 1170 | so->so_proto_props.sopp_maxblk = soppp->sopp_maxblk; |
| 1171 | if (soppp->sopp_flags & SOCKOPT_WROFF) |
| 1172 | so->so_proto_props.sopp_wroff = soppp->sopp_wroff; |
| 1173 | if (soppp->sopp_flags & SOCKOPT_TAIL) |
| 1174 | so->so_proto_props.sopp_tail = soppp->sopp_tail; |
| 1175 | if (soppp->sopp_flags & SOCKOPT_RCVHIWAT) |
| 1176 | so->so_proto_props.sopp_rxhiwat = soppp->sopp_rxhiwat; |
| 1177 | if (soppp->sopp_flags & SOCKOPT_RCVLOWAT) |
| 1178 | so->so_proto_props.sopp_rxlowat = soppp->sopp_rxlowat; |
| 1179 | if (soppp->sopp_flags & SOCKOPT_MAXPSZ) |
| 1180 | so->so_proto_props.sopp_maxpsz = soppp->sopp_maxpsz; |
| 1181 | if (soppp->sopp_flags & SOCKOPT_MINPSZ) |
| 1182 | so->so_proto_props.sopp_minpsz = soppp->sopp_minpsz; |
| 1183 | if (soppp->sopp_flags & SOCKOPT_ZCOPY) { |
| 1184 | if (soppp->sopp_zcopyflag & ZCVMSAFE) { |
| 1185 | so->so_proto_props.sopp_zcopyflag |= STZCVMSAFE; |
| 1186 | so->so_proto_props.sopp_zcopyflag &= ~STZCVMUNSAFE; |
| 1187 | } else if (soppp->sopp_zcopyflag & ZCVMUNSAFE) { |
| 1188 | so->so_proto_props.sopp_zcopyflag |= STZCVMUNSAFE; |
| 1189 | so->so_proto_props.sopp_zcopyflag &= ~STZCVMSAFE; |
| 1190 | } |
| 1191 | |
| 1192 | if (soppp->sopp_zcopyflag & COPYCACHED) { |
| 1193 | so->so_proto_props.sopp_zcopyflag |= STRCOPYCACHED; |
| 1194 | } |
| 1195 | } |
| 1196 | if (soppp->sopp_flags & SOCKOPT_OOBINLINE) |
| 1197 | so->so_proto_props.sopp_oobinline = soppp->sopp_oobinline; |
| 1198 | if (soppp->sopp_flags & SOCKOPT_RCVTIMER) |
| 1199 | so->so_proto_props.sopp_rcvtimer = soppp->sopp_rcvtimer; |
| 1200 | if (soppp->sopp_flags & SOCKOPT_RCVTHRESH) |
| 1201 | so->so_proto_props.sopp_rcvthresh = soppp->sopp_rcvthresh; |
| 1202 | if (soppp->sopp_flags & SOCKOPT_MAXADDRLEN) |
| 1203 | so->so_proto_props.sopp_maxaddrlen = soppp->sopp_maxaddrlen; |
Anders Persson | 081c0aa | 2009-07-09 15:48:00 -0700 | [diff] [blame] | 1204 | if (soppp->sopp_flags & SOCKOPT_LOOPBACK) |
| 1205 | so->so_proto_props.sopp_loopback = soppp->sopp_loopback; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1206 | |
| 1207 | mutex_exit(&so->so_lock); |
| 1208 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1209 | if (so->so_filter_active > 0) { |
| 1210 | sof_instance_t *inst; |
| 1211 | ssize_t maxblk; |
| 1212 | ushort_t wroff, tail; |
| 1213 | maxblk = so->so_proto_props.sopp_maxblk; |
| 1214 | wroff = so->so_proto_props.sopp_wroff; |
| 1215 | tail = so->so_proto_props.sopp_tail; |
| 1216 | for (inst = so->so_filter_bottom; inst != NULL; |
| 1217 | inst = inst->sofi_prev) { |
| 1218 | if (SOF_INTERESTED(inst, mblk_prop)) { |
| 1219 | (*inst->sofi_ops->sofop_mblk_prop)( |
| 1220 | (sof_handle_t)inst, inst->sofi_cookie, |
| 1221 | &maxblk, &wroff, &tail); |
| 1222 | } |
| 1223 | } |
| 1224 | mutex_enter(&so->so_lock); |
| 1225 | so->so_proto_props.sopp_maxblk = maxblk; |
| 1226 | so->so_proto_props.sopp_wroff = wroff; |
| 1227 | so->so_proto_props.sopp_tail = tail; |
| 1228 | mutex_exit(&so->so_lock); |
| 1229 | } |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1230 | #ifdef DEBUG |
| 1231 | soppp->sopp_flags &= ~(SOCKOPT_MAXBLK | SOCKOPT_WROFF | SOCKOPT_TAIL | |
| 1232 | SOCKOPT_RCVHIWAT | SOCKOPT_RCVLOWAT | SOCKOPT_MAXPSZ | |
| 1233 | SOCKOPT_ZCOPY | SOCKOPT_OOBINLINE | SOCKOPT_RCVTIMER | |
Anders Persson | 081c0aa | 2009-07-09 15:48:00 -0700 | [diff] [blame] | 1234 | SOCKOPT_RCVTHRESH | SOCKOPT_MAXADDRLEN | SOCKOPT_MINPSZ | |
| 1235 | SOCKOPT_LOOPBACK); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1236 | ASSERT(soppp->sopp_flags == 0); |
| 1237 | #endif |
| 1238 | } |
| 1239 | |
| 1240 | /* ARGSUSED */ |
| 1241 | ssize_t |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1242 | so_queue_msg_impl(struct sonode *so, mblk_t *mp, |
| 1243 | size_t msg_size, int flags, int *errorp, boolean_t *force_pushp, |
| 1244 | sof_instance_t *filter) |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1245 | { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1246 | boolean_t force_push = B_TRUE; |
| 1247 | int space_left; |
| 1248 | sodirect_t *sodp = so->so_direct; |
| 1249 | |
| 1250 | ASSERT(errorp != NULL); |
| 1251 | *errorp = 0; |
| 1252 | if (mp == NULL) { |
Eiji Ota | c0dd49b | 2010-04-21 07:25:52 -0700 | [diff] [blame] | 1253 | if (so->so_downcalls->sd_recv_uio != NULL) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1254 | mutex_enter(&so->so_lock); |
| 1255 | /* the notify functions will drop the lock */ |
| 1256 | if (flags & MSG_OOB) |
| 1257 | so_notify_oobdata(so, IS_SO_OOB_INLINE(so)); |
| 1258 | else |
| 1259 | so_notify_data(so, msg_size); |
| 1260 | return (0); |
| 1261 | } |
Eiji Ota | c0dd49b | 2010-04-21 07:25:52 -0700 | [diff] [blame] | 1262 | ASSERT(msg_size == 0); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1263 | mutex_enter(&so->so_lock); |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1264 | goto space_check; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1265 | } |
| 1266 | |
| 1267 | ASSERT(mp->b_next == NULL); |
| 1268 | ASSERT(DB_TYPE(mp) == M_DATA || DB_TYPE(mp) == M_PROTO); |
| 1269 | ASSERT(msg_size == msgdsize(mp)); |
| 1270 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1271 | if (DB_TYPE(mp) == M_PROTO && !__TPI_PRIM_ISALIGNED(mp->b_rptr)) { |
| 1272 | /* The read pointer is not aligned correctly for TPI */ |
| 1273 | zcmn_err(getzoneid(), CE_WARN, |
| 1274 | "sockfs: Unaligned TPI message received. rptr = %p\n", |
| 1275 | (void *)mp->b_rptr); |
| 1276 | freemsg(mp); |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1277 | mutex_enter(&so->so_lock); |
| 1278 | if (sodp != NULL) |
| 1279 | SOD_UIOAFINI(sodp); |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1280 | goto space_check; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1281 | } |
| 1282 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1283 | if (so->so_filter_active > 0) { |
| 1284 | for (; filter != NULL; filter = filter->sofi_prev) { |
| 1285 | if (!SOF_INTERESTED(filter, data_in)) |
| 1286 | continue; |
| 1287 | mp = (*filter->sofi_ops->sofop_data_in)( |
| 1288 | (sof_handle_t)filter, filter->sofi_cookie, mp, |
| 1289 | flags, &msg_size); |
| 1290 | ASSERT(msgdsize(mp) == msg_size); |
| 1291 | DTRACE_PROBE2(filter__data, (sof_instance_t), filter, |
| 1292 | (mblk_t *), mp); |
| 1293 | /* Data was consumed/dropped, just do space check */ |
| 1294 | if (msg_size == 0) { |
| 1295 | mutex_enter(&so->so_lock); |
| 1296 | goto space_check; |
| 1297 | } |
| 1298 | } |
| 1299 | } |
| 1300 | |
Robert Mustacchi | 907c282 | 2021-02-01 13:50:02 +0000 | [diff] [blame] | 1301 | mutex_enter(&so->so_lock); |
| 1302 | if (so->so_krecv_cb != NULL) { |
| 1303 | boolean_t cont; |
| 1304 | so_krecv_f func = so->so_krecv_cb; |
| 1305 | void *arg = so->so_krecv_arg; |
| 1306 | |
| 1307 | mutex_exit(&so->so_lock); |
| 1308 | cont = func(so, mp, msg_size, flags & MSG_OOB, arg); |
| 1309 | mutex_enter(&so->so_lock); |
| 1310 | if (cont == B_TRUE) { |
| 1311 | space_left = so->so_rcvbuf; |
| 1312 | } else { |
| 1313 | so->so_rcv_queued = so->so_rcvlowat; |
| 1314 | *errorp = ENOSPC; |
| 1315 | space_left = -1; |
| 1316 | } |
| 1317 | goto done_unlock; |
| 1318 | } |
| 1319 | mutex_exit(&so->so_lock); |
| 1320 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1321 | if (flags & MSG_OOB) { |
| 1322 | so_queue_oob(so, mp, msg_size); |
| 1323 | mutex_enter(&so->so_lock); |
| 1324 | goto space_check; |
| 1325 | } |
| 1326 | |
| 1327 | if (force_pushp != NULL) |
| 1328 | force_push = *force_pushp; |
| 1329 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1330 | mutex_enter(&so->so_lock); |
Anders Persson | 4117443 | 2009-02-12 17:35:05 -0800 | [diff] [blame] | 1331 | if (so->so_state & (SS_FALLBACK_DRAIN | SS_FALLBACK_COMP)) { |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1332 | if (sodp != NULL) |
| 1333 | SOD_DISABLE(sodp); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1334 | mutex_exit(&so->so_lock); |
| 1335 | *errorp = EOPNOTSUPP; |
| 1336 | return (-1); |
| 1337 | } |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1338 | if (so->so_state & (SS_CANTRCVMORE | SS_CLOSING)) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1339 | freemsg(mp); |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1340 | if (sodp != NULL) |
| 1341 | SOD_DISABLE(sodp); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1342 | mutex_exit(&so->so_lock); |
| 1343 | return (0); |
| 1344 | } |
| 1345 | |
| 1346 | /* process the mblk via I/OAT if capable */ |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1347 | if (sodp != NULL && sodp->sod_enabled) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1348 | if (DB_TYPE(mp) == M_DATA) { |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1349 | sod_uioa_mblk_init(sodp, mp, msg_size); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1350 | } else { |
| 1351 | SOD_UIOAFINI(sodp); |
| 1352 | } |
| 1353 | } |
| 1354 | |
| 1355 | if (mp->b_next == NULL) { |
| 1356 | so_enqueue_msg(so, mp, msg_size); |
| 1357 | } else { |
| 1358 | do { |
| 1359 | mblk_t *nmp; |
| 1360 | |
| 1361 | if ((nmp = mp->b_next) != NULL) { |
| 1362 | mp->b_next = NULL; |
| 1363 | } |
| 1364 | so_enqueue_msg(so, mp, msgdsize(mp)); |
| 1365 | mp = nmp; |
| 1366 | } while (mp != NULL); |
| 1367 | } |
| 1368 | |
| 1369 | space_left = so->so_rcvbuf - so->so_rcv_queued; |
| 1370 | if (space_left <= 0) { |
| 1371 | so->so_flowctrld = B_TRUE; |
| 1372 | *errorp = ENOSPC; |
| 1373 | space_left = -1; |
| 1374 | } |
| 1375 | |
| 1376 | if (force_push || so->so_rcv_queued >= so->so_rcv_thresh || |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1377 | so->so_rcv_queued >= so->so_rcv_wanted) { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1378 | SOCKET_TIMER_CANCEL(so); |
| 1379 | /* |
| 1380 | * so_notify_data will release the lock |
| 1381 | */ |
| 1382 | so_notify_data(so, so->so_rcv_queued); |
| 1383 | |
| 1384 | if (force_pushp != NULL) |
| 1385 | *force_pushp = B_TRUE; |
| 1386 | goto done; |
| 1387 | } else if (so->so_rcv_timer_tid == 0) { |
| 1388 | /* Make sure the recv push timer is running */ |
| 1389 | SOCKET_TIMER_START(so); |
| 1390 | } |
| 1391 | |
| 1392 | done_unlock: |
| 1393 | mutex_exit(&so->so_lock); |
| 1394 | done: |
| 1395 | return (space_left); |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1396 | |
| 1397 | space_check: |
| 1398 | space_left = so->so_rcvbuf - so->so_rcv_queued; |
| 1399 | if (space_left <= 0) { |
| 1400 | so->so_flowctrld = B_TRUE; |
| 1401 | *errorp = ENOSPC; |
| 1402 | space_left = -1; |
| 1403 | } |
| 1404 | goto done_unlock; |
| 1405 | } |
| 1406 | |
| 1407 | #pragma inline(so_queue_msg_impl) |
| 1408 | |
| 1409 | ssize_t |
| 1410 | so_queue_msg(sock_upper_handle_t sock_handle, mblk_t *mp, |
| 1411 | size_t msg_size, int flags, int *errorp, boolean_t *force_pushp) |
| 1412 | { |
| 1413 | struct sonode *so = (struct sonode *)sock_handle; |
| 1414 | |
| 1415 | return (so_queue_msg_impl(so, mp, msg_size, flags, errorp, force_pushp, |
| 1416 | so->so_filter_bottom)); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1417 | } |
| 1418 | |
| 1419 | /* |
| 1420 | * Set the offset of where the oob data is relative to the bytes in |
| 1421 | * queued. Also generate SIGURG |
| 1422 | */ |
| 1423 | void |
| 1424 | so_signal_oob(sock_upper_handle_t sock_handle, ssize_t offset) |
| 1425 | { |
| 1426 | struct sonode *so; |
| 1427 | |
| 1428 | ASSERT(offset >= 0); |
| 1429 | so = (struct sonode *)sock_handle; |
| 1430 | mutex_enter(&so->so_lock); |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1431 | if (so->so_direct != NULL) |
| 1432 | SOD_UIOAFINI(so->so_direct); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1433 | |
| 1434 | /* |
| 1435 | * New urgent data on the way so forget about any old |
| 1436 | * urgent data. |
| 1437 | */ |
| 1438 | so->so_state &= ~(SS_HAVEOOBDATA|SS_HADOOBDATA); |
| 1439 | |
| 1440 | /* |
| 1441 | * Record that urgent data is pending. |
| 1442 | */ |
| 1443 | so->so_state |= SS_OOBPEND; |
| 1444 | |
| 1445 | if (so->so_oobmsg != NULL) { |
| 1446 | dprintso(so, 1, ("sock: discarding old oob\n")); |
| 1447 | freemsg(so->so_oobmsg); |
| 1448 | so->so_oobmsg = NULL; |
| 1449 | } |
| 1450 | |
| 1451 | /* |
| 1452 | * set the offset where the urgent byte is |
| 1453 | */ |
| 1454 | so->so_oobmark = so->so_rcv_queued + offset; |
| 1455 | if (so->so_oobmark == 0) |
| 1456 | so->so_state |= SS_RCVATMARK; |
| 1457 | else |
| 1458 | so->so_state &= ~SS_RCVATMARK; |
| 1459 | |
| 1460 | so_notify_oobsig(so); |
| 1461 | } |
| 1462 | |
| 1463 | /* |
| 1464 | * Queue the OOB byte |
| 1465 | */ |
| 1466 | static void |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1467 | so_queue_oob(struct sonode *so, mblk_t *mp, size_t len) |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1468 | { |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1469 | mutex_enter(&so->so_lock); |
Anders Persson | bbc000e | 2009-04-28 12:10:59 -0700 | [diff] [blame] | 1470 | if (so->so_direct != NULL) |
| 1471 | SOD_UIOAFINI(so->so_direct); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1472 | |
| 1473 | ASSERT(mp != NULL); |
| 1474 | if (!IS_SO_OOB_INLINE(so)) { |
| 1475 | so->so_oobmsg = mp; |
| 1476 | so->so_state |= SS_HAVEOOBDATA; |
| 1477 | } else { |
| 1478 | so_enqueue_msg(so, mp, len); |
| 1479 | } |
| 1480 | |
| 1481 | so_notify_oobdata(so, IS_SO_OOB_INLINE(so)); |
| 1482 | } |
| 1483 | |
| 1484 | int |
| 1485 | so_close(struct sonode *so, int flag, struct cred *cr) |
| 1486 | { |
| 1487 | int error; |
| 1488 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1489 | /* |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1490 | * No new data will be enqueued once the CLOSING flag is set. |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1491 | */ |
| 1492 | mutex_enter(&so->so_lock); |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1493 | so->so_state |= SS_CLOSING; |
Rao Shoaib | d36be52 | 2008-12-17 13:09:55 -0800 | [diff] [blame] | 1494 | ASSERT(so_verify_oobstate(so)); |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1495 | so_rcv_flush(so); |
| 1496 | mutex_exit(&so->so_lock); |
| 1497 | |
Anders Persson | e82bc0b | 2010-08-10 15:52:26 -0700 | [diff] [blame] | 1498 | if (so->so_filter_active > 0) |
| 1499 | sof_sonode_closing(so); |
| 1500 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1501 | if (so->so_state & SS_ACCEPTCONN) { |
| 1502 | /* |
| 1503 | * We grab and release the accept lock to ensure that any |
| 1504 | * thread about to insert a socket in so_newconn completes |
| 1505 | * before we flush the queue. Any thread calling so_newconn |
| 1506 | * after we drop the lock will observe the SS_CLOSING flag, |
| 1507 | * which will stop it from inserting the socket in the queue. |
| 1508 | */ |
| 1509 | mutex_enter(&so->so_acceptq_lock); |
| 1510 | mutex_exit(&so->so_acceptq_lock); |
| 1511 | |
| 1512 | so_acceptq_flush(so, B_TRUE); |
| 1513 | } |
| 1514 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1515 | error = (*so->so_downcalls->sd_close)(so->so_proto_handle, flag, cr); |
| 1516 | switch (error) { |
| 1517 | default: |
| 1518 | /* Protocol made a synchronous close; remove proto ref */ |
| 1519 | VN_RELE(SOTOV(so)); |
| 1520 | break; |
| 1521 | case EINPROGRESS: |
| 1522 | /* |
| 1523 | * Protocol is in the process of closing, it will make a |
| 1524 | * 'closed' upcall to remove the reference. |
| 1525 | */ |
| 1526 | error = 0; |
| 1527 | break; |
| 1528 | } |
| 1529 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1530 | return (error); |
| 1531 | } |
| 1532 | |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1533 | /* |
| 1534 | * Upcall made by the protocol when it's doing an asynchronous close. It |
| 1535 | * will drop the protocol's reference on the socket. |
| 1536 | */ |
| 1537 | void |
| 1538 | so_closed(sock_upper_handle_t sock_handle) |
| 1539 | { |
| 1540 | struct sonode *so = (struct sonode *)sock_handle; |
| 1541 | |
| 1542 | VN_RELE(SOTOV(so)); |
| 1543 | } |
| 1544 | |
Andy Fiddaman | 78a2e11 | 2019-08-22 14:59:11 +0000 | [diff] [blame] | 1545 | vnode_t * |
| 1546 | so_get_vnode(sock_upper_handle_t sock_handle) |
| 1547 | { |
| 1548 | sonode_t *so = (sonode_t *)sock_handle; |
| 1549 | vnode_t *vn; |
| 1550 | |
| 1551 | vn = SOTOV(so); |
| 1552 | VN_HOLD(vn); |
| 1553 | |
| 1554 | return (vn); |
| 1555 | } |
| 1556 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1557 | void |
| 1558 | so_zcopy_notify(sock_upper_handle_t sock_handle) |
| 1559 | { |
| 1560 | struct sonode *so = (struct sonode *)sock_handle; |
| 1561 | |
| 1562 | mutex_enter(&so->so_lock); |
| 1563 | so->so_copyflag |= STZCNOTIFY; |
| 1564 | cv_broadcast(&so->so_copy_cv); |
| 1565 | mutex_exit(&so->so_lock); |
| 1566 | } |
| 1567 | |
| 1568 | void |
| 1569 | so_set_error(sock_upper_handle_t sock_handle, int error) |
| 1570 | { |
| 1571 | struct sonode *so = (struct sonode *)sock_handle; |
| 1572 | |
| 1573 | mutex_enter(&so->so_lock); |
| 1574 | |
| 1575 | soseterror(so, error); |
| 1576 | |
| 1577 | so_notify_error(so); |
| 1578 | } |
| 1579 | |
| 1580 | /* |
| 1581 | * so_recvmsg - read data from the socket |
| 1582 | * |
| 1583 | * There are two ways of obtaining data; either we ask the protocol to |
| 1584 | * copy directly into the supplied buffer, or we copy data from the |
| 1585 | * sonode's receive queue. The decision which one to use depends on |
| 1586 | * whether the protocol has a sd_recv_uio down call. |
| 1587 | */ |
| 1588 | int |
| 1589 | so_recvmsg(struct sonode *so, struct nmsghdr *msg, struct uio *uiop, |
| 1590 | struct cred *cr) |
| 1591 | { |
Andy Fiddaman | 78a2e11 | 2019-08-22 14:59:11 +0000 | [diff] [blame] | 1592 | rval_t rval; |
| 1593 | int flags = 0; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1594 | t_uscalar_t controllen, namelen; |
Andy Fiddaman | 78a2e11 | 2019-08-22 14:59:11 +0000 | [diff] [blame] | 1595 | int error = 0; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1596 | int ret; |
| 1597 | mblk_t *mctlp = NULL; |
| 1598 | union T_primitives *tpr; |
| 1599 | void *control; |
| 1600 | ssize_t saved_resid; |
| 1601 | struct uio *suiop; |
| 1602 | |
| 1603 | SO_BLOCK_FALLBACK(so, SOP_RECVMSG(so, msg, uiop, cr)); |
| 1604 | |
| 1605 | if ((so->so_state & (SS_ISCONNECTED|SS_CANTRCVMORE)) == 0 && |
| 1606 | (so->so_mode & SM_CONNREQUIRED)) { |
| 1607 | SO_UNBLOCK_FALLBACK(so); |
| 1608 | return (ENOTCONN); |
| 1609 | } |
| 1610 | |
Robert Mustacchi | 907c282 | 2021-02-01 13:50:02 +0000 | [diff] [blame] | 1611 | mutex_enter(&so->so_lock); |
| 1612 | if (so->so_krecv_cb != NULL) { |
| 1613 | mutex_exit(&so->so_lock); |
| 1614 | return (EOPNOTSUPP); |
| 1615 | } |
| 1616 | mutex_exit(&so->so_lock); |
| 1617 | |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1618 | if (msg->msg_flags & MSG_PEEK) |
| 1619 | msg->msg_flags &= ~MSG_WAITALL; |
| 1620 | |
| 1621 | if (so->so_mode & SM_ATOMIC) |
| 1622 | msg->msg_flags |= MSG_TRUNC; |
| 1623 | |
| 1624 | if (msg->msg_flags & MSG_OOB) { |
| 1625 | if ((so->so_mode & SM_EXDATA) == 0) { |
| 1626 | error = EOPNOTSUPP; |
| 1627 | } else if (so->so_downcalls->sd_recv_uio != NULL) { |
| 1628 | error = (*so->so_downcalls->sd_recv_uio) |
| 1629 | (so->so_proto_handle, uiop, msg, cr); |
| 1630 | } else { |
| 1631 | error = sorecvoob(so, msg, uiop, msg->msg_flags, |
| 1632 | IS_SO_OOB_INLINE(so)); |
| 1633 | } |
| 1634 | SO_UNBLOCK_FALLBACK(so); |
| 1635 | return (error); |
| 1636 | } |
| 1637 | |
| 1638 | /* |
| 1639 | * If the protocol has the recv down call, then pass the request |
| 1640 | * down. |
| 1641 | */ |
| 1642 | if (so->so_downcalls->sd_recv_uio != NULL) { |
| 1643 | error = (*so->so_downcalls->sd_recv_uio) |
| 1644 | (so->so_proto_handle, uiop, msg, cr); |
| 1645 | SO_UNBLOCK_FALLBACK(so); |
| 1646 | return (error); |
| 1647 | } |
| 1648 | |
| 1649 | /* |
| 1650 | * Reading data from the socket buffer |
| 1651 | */ |
| 1652 | flags = msg->msg_flags; |
| 1653 | msg->msg_flags = 0; |
| 1654 | |
| 1655 | /* |
| 1656 | * Set msg_controllen and msg_namelen to zero here to make it |
| 1657 | * simpler in the cases that no control or name is returned. |
| 1658 | */ |
| 1659 | controllen = msg->msg_controllen; |
| 1660 | namelen = msg->msg_namelen; |
| 1661 | msg->msg_controllen = 0; |
| 1662 | msg->msg_namelen = 0; |
| 1663 | |
| 1664 | mutex_enter(&so->so_lock); |
| 1665 | /* Set SOREADLOCKED */ |
| 1666 | error = so_lock_read_intr(so, |
| 1667 | uiop->uio_fmode | ((flags & MSG_DONTWAIT) ? FNONBLOCK : 0)); |
| 1668 | mutex_exit(&so->so_lock); |
| 1669 | if (error) { |
| 1670 | SO_UNBLOCK_FALLBACK(so); |
| 1671 | return (error); |
| 1672 | } |
| 1673 | |
| 1674 | suiop = sod_rcv_init(so, flags, &uiop); |
| 1675 | retry: |
| 1676 | saved_resid = uiop->uio_resid; |
| 1677 | error = so_dequeue_msg(so, &mctlp, uiop, &rval, flags); |
| 1678 | if (error != 0) { |
| 1679 | goto out; |
| 1680 | } |
| 1681 | /* |
| 1682 | * For datagrams the MOREDATA flag is used to set MSG_TRUNC. |
| 1683 | * For non-datagrams MOREDATA is used to set MSG_EOR. |
| 1684 | */ |
| 1685 | ASSERT(!(rval.r_val1 & MORECTL)); |
| 1686 | if ((rval.r_val1 & MOREDATA) && (so->so_mode & SM_ATOMIC)) |
| 1687 | msg->msg_flags |= MSG_TRUNC; |
| 1688 | if (mctlp == NULL) { |
| 1689 | dprintso(so, 1, ("so_recvmsg: got M_DATA\n")); |
| 1690 | |
| 1691 | mutex_enter(&so->so_lock); |
| 1692 | /* Set MSG_EOR based on MOREDATA */ |
| 1693 | if (!(rval.r_val1 & MOREDATA)) { |
| 1694 | if (so->so_state & SS_SAVEDEOR) { |
| 1695 | msg->msg_flags |= MSG_EOR; |
| 1696 | so->so_state &= ~SS_SAVEDEOR; |
| 1697 | } |
| 1698 | } |
| 1699 | /* |
| 1700 | * If some data was received (i.e. not EOF) and the |
| 1701 | * read/recv* has not been satisfied wait for some more. |
| 1702 | */ |
| 1703 | if ((flags & MSG_WAITALL) && !(msg->msg_flags & MSG_EOR) && |
| 1704 | uiop->uio_resid != saved_resid && uiop->uio_resid > 0) { |
| 1705 | mutex_exit(&so->so_lock); |
Anders Persson | 8591a19 | 2009-05-29 09:33:18 -0700 | [diff] [blame] | 1706 | flags |= MSG_NOMARK; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1707 | goto retry; |
| 1708 | } |
| 1709 | |
| 1710 | goto out_locked; |
| 1711 | } |
Anders Persson | 8591a19 | 2009-05-29 09:33:18 -0700 | [diff] [blame] | 1712 | /* so_queue_msg has already verified length and alignment */ |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1713 | tpr = (union T_primitives *)mctlp->b_rptr; |
| 1714 | dprintso(so, 1, ("so_recvmsg: type %d\n", tpr->type)); |
| 1715 | switch (tpr->type) { |
| 1716 | case T_DATA_IND: { |
| 1717 | /* |
| 1718 | * Set msg_flags to MSG_EOR based on |
| 1719 | * MORE_flag and MOREDATA. |
| 1720 | */ |
| 1721 | mutex_enter(&so->so_lock); |
| 1722 | so->so_state &= ~SS_SAVEDEOR; |
| 1723 | if (!(tpr->data_ind.MORE_flag & 1)) { |
| 1724 | if (!(rval.r_val1 & MOREDATA)) |
| 1725 | msg->msg_flags |= MSG_EOR; |
| 1726 | else |
| 1727 | so->so_state |= SS_SAVEDEOR; |
| 1728 | } |
| 1729 | freemsg(mctlp); |
| 1730 | /* |
| 1731 | * If some data was received (i.e. not EOF) and the |
| 1732 | * read/recv* has not been satisfied wait for some more. |
| 1733 | */ |
| 1734 | if ((flags & MSG_WAITALL) && !(msg->msg_flags & MSG_EOR) && |
| 1735 | uiop->uio_resid != saved_resid && uiop->uio_resid > 0) { |
| 1736 | mutex_exit(&so->so_lock); |
Anders Persson | 8591a19 | 2009-05-29 09:33:18 -0700 | [diff] [blame] | 1737 | flags |= MSG_NOMARK; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1738 | goto retry; |
| 1739 | } |
| 1740 | goto out_locked; |
| 1741 | } |
| 1742 | case T_UNITDATA_IND: { |
| 1743 | void *addr; |
| 1744 | t_uscalar_t addrlen; |
| 1745 | void *abuf; |
| 1746 | t_uscalar_t optlen; |
| 1747 | void *opt; |
| 1748 | |
| 1749 | if (namelen != 0) { |
| 1750 | /* Caller wants source address */ |
| 1751 | addrlen = tpr->unitdata_ind.SRC_length; |
| 1752 | addr = sogetoff(mctlp, tpr->unitdata_ind.SRC_offset, |
| 1753 | addrlen, 1); |
| 1754 | if (addr == NULL) { |
| 1755 | freemsg(mctlp); |
| 1756 | error = EPROTO; |
| 1757 | eprintsoline(so, error); |
| 1758 | goto out; |
| 1759 | } |
| 1760 | ASSERT(so->so_family != AF_UNIX); |
| 1761 | } |
| 1762 | optlen = tpr->unitdata_ind.OPT_length; |
| 1763 | if (optlen != 0) { |
| 1764 | t_uscalar_t ncontrollen; |
| 1765 | |
| 1766 | /* |
| 1767 | * Extract any source address option. |
| 1768 | * Determine how large cmsg buffer is needed. |
| 1769 | */ |
| 1770 | opt = sogetoff(mctlp, tpr->unitdata_ind.OPT_offset, |
| 1771 | optlen, __TPI_ALIGN_SIZE); |
| 1772 | |
| 1773 | if (opt == NULL) { |
| 1774 | freemsg(mctlp); |
| 1775 | error = EPROTO; |
| 1776 | eprintsoline(so, error); |
| 1777 | goto out; |
| 1778 | } |
| 1779 | if (so->so_family == AF_UNIX) |
| 1780 | so_getopt_srcaddr(opt, optlen, &addr, &addrlen); |
| 1781 | ncontrollen = so_cmsglen(mctlp, opt, optlen, |
| 1782 | !(flags & MSG_XPG4_2)); |
| 1783 | if (controllen != 0) |
| 1784 | controllen = ncontrollen; |
| 1785 | else if (ncontrollen != 0) |
| 1786 | msg->msg_flags |= MSG_CTRUNC; |
| 1787 | } else { |
| 1788 | controllen = 0; |
| 1789 | } |
| 1790 | |
| 1791 | if (namelen != 0) { |
| 1792 | /* |
| 1793 | * Return address to caller. |
| 1794 | * Caller handles truncation if length |
| 1795 | * exceeds msg_namelen. |
| 1796 | * NOTE: AF_UNIX NUL termination is ensured by |
| 1797 | * the sender's copyin_name(). |
| 1798 | */ |
| 1799 | abuf = kmem_alloc(addrlen, KM_SLEEP); |
| 1800 | |
| 1801 | bcopy(addr, abuf, addrlen); |
| 1802 | msg->msg_name = abuf; |
| 1803 | msg->msg_namelen = addrlen; |
| 1804 | } |
| 1805 | |
| 1806 | if (controllen != 0) { |
| 1807 | /* |
| 1808 | * Return control msg to caller. |
| 1809 | * Caller handles truncation if length |
| 1810 | * exceeds msg_controllen. |
| 1811 | */ |
| 1812 | control = kmem_zalloc(controllen, KM_SLEEP); |
| 1813 | |
| 1814 | error = so_opt2cmsg(mctlp, opt, optlen, |
| 1815 | !(flags & MSG_XPG4_2), control, controllen); |
| 1816 | if (error) { |
| 1817 | freemsg(mctlp); |
| 1818 | if (msg->msg_namelen != 0) |
| 1819 | kmem_free(msg->msg_name, |
| 1820 | msg->msg_namelen); |
| 1821 | kmem_free(control, controllen); |
| 1822 | eprintsoline(so, error); |
| 1823 | goto out; |
| 1824 | } |
| 1825 | msg->msg_control = control; |
| 1826 | msg->msg_controllen = controllen; |
| 1827 | } |
| 1828 | |
| 1829 | freemsg(mctlp); |
| 1830 | goto out; |
| 1831 | } |
| 1832 | case T_OPTDATA_IND: { |
| 1833 | struct T_optdata_req *tdr; |
| 1834 | void *opt; |
| 1835 | t_uscalar_t optlen; |
| 1836 | |
| 1837 | tdr = (struct T_optdata_req *)mctlp->b_rptr; |
| 1838 | optlen = tdr->OPT_length; |
| 1839 | if (optlen != 0) { |
| 1840 | t_uscalar_t ncontrollen; |
| 1841 | /* |
| 1842 | * Determine how large cmsg buffer is needed. |
| 1843 | */ |
| 1844 | opt = sogetoff(mctlp, |
| 1845 | tpr->optdata_ind.OPT_offset, optlen, |
| 1846 | __TPI_ALIGN_SIZE); |
| 1847 | |
| 1848 | if (opt == NULL) { |
| 1849 | freemsg(mctlp); |
| 1850 | error = EPROTO; |
| 1851 | eprintsoline(so, error); |
| 1852 | goto out; |
| 1853 | } |
| 1854 | |
| 1855 | ncontrollen = so_cmsglen(mctlp, opt, optlen, |
| 1856 | !(flags & MSG_XPG4_2)); |
| 1857 | if (controllen != 0) |
| 1858 | controllen = ncontrollen; |
| 1859 | else if (ncontrollen != 0) |
| 1860 | msg->msg_flags |= MSG_CTRUNC; |
| 1861 | } else { |
| 1862 | controllen = 0; |
| 1863 | } |
| 1864 | |
| 1865 | if (controllen != 0) { |
| 1866 | /* |
| 1867 | * Return control msg to caller. |
| 1868 | * Caller handles truncation if length |
| 1869 | * exceeds msg_controllen. |
| 1870 | */ |
| 1871 | control = kmem_zalloc(controllen, KM_SLEEP); |
| 1872 | |
| 1873 | error = so_opt2cmsg(mctlp, opt, optlen, |
| 1874 | !(flags & MSG_XPG4_2), control, controllen); |
| 1875 | if (error) { |
| 1876 | freemsg(mctlp); |
| 1877 | kmem_free(control, controllen); |
| 1878 | eprintsoline(so, error); |
| 1879 | goto out; |
| 1880 | } |
| 1881 | msg->msg_control = control; |
| 1882 | msg->msg_controllen = controllen; |
| 1883 | } |
| 1884 | |
| 1885 | /* |
| 1886 | * Set msg_flags to MSG_EOR based on |
| 1887 | * DATA_flag and MOREDATA. |
| 1888 | */ |
| 1889 | mutex_enter(&so->so_lock); |
| 1890 | so->so_state &= ~SS_SAVEDEOR; |
| 1891 | if (!(tpr->data_ind.MORE_flag & 1)) { |
| 1892 | if (!(rval.r_val1 & MOREDATA)) |
| 1893 | msg->msg_flags |= MSG_EOR; |
| 1894 | else |
| 1895 | so->so_state |= SS_SAVEDEOR; |
| 1896 | } |
| 1897 | freemsg(mctlp); |
| 1898 | /* |
| 1899 | * If some data was received (i.e. not EOF) and the |
| 1900 | * read/recv* has not been satisfied wait for some more. |
| 1901 | * Not possible to wait if control info was received. |
| 1902 | */ |
| 1903 | if ((flags & MSG_WAITALL) && !(msg->msg_flags & MSG_EOR) && |
| 1904 | controllen == 0 && |
| 1905 | uiop->uio_resid != saved_resid && uiop->uio_resid > 0) { |
| 1906 | mutex_exit(&so->so_lock); |
Anders Persson | 8591a19 | 2009-05-29 09:33:18 -0700 | [diff] [blame] | 1907 | flags |= MSG_NOMARK; |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1908 | goto retry; |
| 1909 | } |
| 1910 | goto out_locked; |
| 1911 | } |
| 1912 | default: |
| 1913 | cmn_err(CE_CONT, "so_recvmsg bad type %x \n", |
| 1914 | tpr->type); |
| 1915 | freemsg(mctlp); |
| 1916 | error = EPROTO; |
| 1917 | ASSERT(0); |
| 1918 | } |
| 1919 | out: |
| 1920 | mutex_enter(&so->so_lock); |
| 1921 | out_locked: |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1922 | ret = sod_rcv_done(so, suiop, uiop); |
| 1923 | if (ret != 0 && error == 0) |
| 1924 | error = ret; |
| 1925 | |
| 1926 | so_unlock_read(so); /* Clear SOREADLOCKED */ |
| 1927 | mutex_exit(&so->so_lock); |
| 1928 | |
| 1929 | SO_UNBLOCK_FALLBACK(so); |
| 1930 | |
| 1931 | return (error); |
| 1932 | } |
| 1933 | |
| 1934 | sonodeops_t so_sonodeops = { |
| 1935 | so_init, /* sop_init */ |
| 1936 | so_accept, /* sop_accept */ |
| 1937 | so_bind, /* sop_bind */ |
| 1938 | so_listen, /* sop_listen */ |
| 1939 | so_connect, /* sop_connect */ |
| 1940 | so_recvmsg, /* sop_recvmsg */ |
| 1941 | so_sendmsg, /* sop_sendmsg */ |
| 1942 | so_sendmblk, /* sop_sendmblk */ |
| 1943 | so_getpeername, /* sop_getpeername */ |
| 1944 | so_getsockname, /* sop_getsockname */ |
| 1945 | so_shutdown, /* sop_shutdown */ |
| 1946 | so_getsockopt, /* sop_getsockopt */ |
| 1947 | so_setsockopt, /* sop_setsockopt */ |
| 1948 | so_ioctl, /* sop_ioctl */ |
| 1949 | so_poll, /* sop_poll */ |
| 1950 | so_close, /* sop_close */ |
| 1951 | }; |
| 1952 | |
| 1953 | sock_upcalls_t so_upcalls = { |
| 1954 | so_newconn, |
| 1955 | so_connected, |
| 1956 | so_disconnected, |
| 1957 | so_opctl, |
| 1958 | so_queue_msg, |
| 1959 | so_set_prop, |
| 1960 | so_txq_full, |
| 1961 | so_signal_oob, |
| 1962 | so_zcopy_notify, |
Anders Persson | 3e95bd4 | 2010-06-17 17:22:09 -0700 | [diff] [blame] | 1963 | so_set_error, |
Andy Fiddaman | 78a2e11 | 2019-08-22 14:59:11 +0000 | [diff] [blame] | 1964 | so_closed, |
| 1965 | so_get_vnode |
Yu Xiangning | 0f1702c | 2008-12-11 20:04:13 -0800 | [diff] [blame] | 1966 | }; |