| 1 | /* |
| 2 | * Copyright (c) 1982, 1986, 1989, 1990 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | * |
| 33 | * from: @(#)uipc_syscalls.c 7.24 (Berkeley) 6/3/91 |
| 34 | * $Id: uipc_syscalls.c,v 1.5 1993/11/25 01:33:36 wollman Exp $ |
| 35 | */ |
| 36 | |
| 37 | #include "param.h" |
| 38 | #include "systm.h" |
| 39 | #include "filedesc.h" |
| 40 | #include "proc.h" |
| 41 | #include "file.h" |
| 42 | #include "buf.h" |
| 43 | #include "malloc.h" |
| 44 | #include "mbuf.h" |
| 45 | #include "protosw.h" |
| 46 | #include "socket.h" |
| 47 | #include "socketvar.h" |
| 48 | #ifdef KTRACE |
| 49 | #include "ktrace.h" |
| 50 | #endif |
| 51 | |
| 52 | /* First two also used by NFS, boooo, hiss! */ |
| 53 | int getsock(struct filedesc *, int, struct file **); |
| 54 | int sockargs(struct mbuf **, caddr_t, int, int); |
| 55 | static int sendit(struct proc *, int, struct msghdr *, int, int *); |
| 56 | static int recvit(struct proc *, int, struct msghdr *, caddr_t, int *); |
| 57 | |
| 58 | /* |
| 59 | * System call interface to the socket abstraction. |
| 60 | */ |
| 61 | |
| 62 | extern struct fileops socketops; |
| 63 | |
| 64 | struct socket_args { |
| 65 | int domain; |
| 66 | int type; |
| 67 | int protocol; |
| 68 | }; |
| 69 | |
| 70 | int |
| 71 | socket(p, uap, retval) |
| 72 | struct proc *p; |
| 73 | register struct socket_args *uap; |
| 74 | int *retval; |
| 75 | { |
| 76 | struct filedesc *fdp = p->p_fd; |
| 77 | struct socket *so; |
| 78 | struct file *fp; |
| 79 | int fd, error; |
| 80 | |
| 81 | if (error = falloc(p, &fp, &fd)) |
| 82 | return (error); |
| 83 | fp->f_flag = FREAD|FWRITE; |
| 84 | fp->f_type = DTYPE_SOCKET; |
| 85 | fp->f_ops = &socketops; |
| 86 | if (error = socreate(uap->domain, &so, uap->type, uap->protocol)) { |
| 87 | fdp->fd_ofiles[fd] = 0; |
| 88 | ffree(fp); |
| 89 | } else { |
| 90 | fp->f_data = (caddr_t)so; |
| 91 | *retval = fd; |
| 92 | } |
| 93 | return (error); |
| 94 | } |
| 95 | |
| 96 | struct bind_args { |
| 97 | int s; |
| 98 | caddr_t name; |
| 99 | int namelen; |
| 100 | }; |
| 101 | |
| 102 | /* ARGSUSED */ |
| 103 | int |
| 104 | bind(p, uap, retval) |
| 105 | struct proc *p; |
| 106 | register struct bind_args *uap; |
| 107 | int *retval; |
| 108 | { |
| 109 | struct file *fp; |
| 110 | struct mbuf *nam; |
| 111 | int error; |
| 112 | |
| 113 | if (error = getsock(p->p_fd, uap->s, &fp)) |
| 114 | return (error); |
| 115 | if (error = sockargs(&nam, uap->name, uap->namelen, MT_SONAME)) |
| 116 | return (error); |
| 117 | error = sobind((struct socket *)fp->f_data, nam); |
| 118 | m_freem(nam); |
| 119 | return (error); |
| 120 | } |
| 121 | |
| 122 | struct listen_args { |
| 123 | int s; |
| 124 | int backlog; |
| 125 | }; |
| 126 | |
| 127 | /* ARGSUSED */ |
| 128 | int |
| 129 | listen(p, uap, retval) |
| 130 | struct proc *p; |
| 131 | register struct listen_args *uap; |
| 132 | int *retval; |
| 133 | { |
| 134 | struct file *fp; |
| 135 | int error; |
| 136 | |
| 137 | if (error = getsock(p->p_fd, uap->s, &fp)) |
| 138 | return (error); |
| 139 | return (solisten((struct socket *)fp->f_data, uap->backlog)); |
| 140 | } |
| 141 | |
| 142 | struct accept1_args { |
| 143 | int s; |
| 144 | caddr_t name; |
| 145 | int *anamelen; |
| 146 | #ifdef COMPAT_43 |
| 147 | int compat_43; |
| 148 | #endif |
| 149 | }; |
| 150 | |
| 151 | #ifdef COMPAT_43 |
| 152 | |
| 153 | int accept1(struct proc *, struct accept1_args *, int *); |
| 154 | |
| 155 | struct accept_args { |
| 156 | int s; |
| 157 | caddr_t name; |
| 158 | int *anamelen; |
| 159 | int compat_43; |
| 160 | }; |
| 161 | |
| 162 | int |
| 163 | accept(p, uap, retval) |
| 164 | struct proc *p; |
| 165 | struct accept_args *uap; |
| 166 | int *retval; |
| 167 | { |
| 168 | |
| 169 | uap->compat_43 = 0; |
| 170 | return (accept1(p, (struct accept1_args *)uap, retval)); |
| 171 | } |
| 172 | |
| 173 | struct oaccept_args { |
| 174 | int s; |
| 175 | caddr_t name; |
| 176 | int *anamelen; |
| 177 | int compat_43; |
| 178 | }; |
| 179 | |
| 180 | int |
| 181 | oaccept(p, uap, retval) |
| 182 | struct proc *p; |
| 183 | struct oaccept_args *uap; |
| 184 | int *retval; |
| 185 | { |
| 186 | |
| 187 | uap->compat_43 = 1; |
| 188 | return (accept1(p, (struct accept1_args *)uap, retval)); |
| 189 | } |
| 190 | #else /* COMPAT_43 */ |
| 191 | |
| 192 | #define accept1 accept |
| 193 | #endif |
| 194 | |
| 195 | int |
| 196 | accept1(p, uap, retval) |
| 197 | struct proc *p; |
| 198 | register struct accept1_args *uap; |
| 199 | int *retval; |
| 200 | { |
| 201 | struct file *fp; |
| 202 | struct mbuf *nam; |
| 203 | int namelen, error, s; |
| 204 | register struct socket *so; |
| 205 | |
| 206 | if (uap->name && (error = copyin((caddr_t)uap->anamelen, |
| 207 | (caddr_t)&namelen, sizeof (namelen)))) |
| 208 | return (error); |
| 209 | if (error = getsock(p->p_fd, uap->s, &fp)) |
| 210 | return (error); |
| 211 | s = splnet(); |
| 212 | so = (struct socket *)fp->f_data; |
| 213 | if ((so->so_options & SO_ACCEPTCONN) == 0) { |
| 214 | splx(s); |
| 215 | return (EINVAL); |
| 216 | } |
| 217 | if ((so->so_state & SS_NBIO) && so->so_qlen == 0) { |
| 218 | splx(s); |
| 219 | return (EWOULDBLOCK); |
| 220 | } |
| 221 | while (so->so_qlen == 0 && so->so_error == 0) { |
| 222 | if (so->so_state & SS_CANTRCVMORE) { |
| 223 | so->so_error = ECONNABORTED; |
| 224 | break; |
| 225 | } |
| 226 | if (error = tsleep((caddr_t)&so->so_timeo, PSOCK | PCATCH, |
| 227 | netcon, 0)) { |
| 228 | splx(s); |
| 229 | return (error); |
| 230 | } |
| 231 | } |
| 232 | if (so->so_error) { |
| 233 | error = so->so_error; |
| 234 | so->so_error = 0; |
| 235 | splx(s); |
| 236 | return (error); |
| 237 | } |
| 238 | if (error = falloc(p, &fp, retval)) { |
| 239 | splx(s); |
| 240 | return (error); |
| 241 | } |
| 242 | { struct socket *aso = so->so_q; |
| 243 | if (soqremque(aso, 1) == 0) |
| 244 | panic("accept"); |
| 245 | so = aso; |
| 246 | } |
| 247 | fp->f_type = DTYPE_SOCKET; |
| 248 | fp->f_flag = FREAD|FWRITE; |
| 249 | fp->f_ops = &socketops; |
| 250 | fp->f_data = (caddr_t)so; |
| 251 | nam = m_get(M_WAIT, MT_SONAME); |
| 252 | (void) soaccept(so, nam); |
| 253 | if (uap->name) { |
| 254 | #ifdef COMPAT_43 |
| 255 | if (uap->compat_43) |
| 256 | mtod(nam, struct osockaddr *)->sa_family = |
| 257 | mtod(nam, struct sockaddr *)->sa_family; |
| 258 | #endif |
| 259 | if (namelen > nam->m_len) |
| 260 | namelen = nam->m_len; |
| 261 | /* SHOULD COPY OUT A CHAIN HERE */ |
| 262 | if ((error = copyout(mtod(nam, caddr_t), (caddr_t)uap->name, |
| 263 | (u_int)namelen)) == 0) |
| 264 | error = copyout((caddr_t)&namelen, |
| 265 | (caddr_t)uap->anamelen, sizeof (*uap->anamelen)); |
| 266 | } |
| 267 | m_freem(nam); |
| 268 | splx(s); |
| 269 | return (error); |
| 270 | } |
| 271 | |
| 272 | struct connect_args { |
| 273 | int s; |
| 274 | caddr_t name; |
| 275 | int namelen; |
| 276 | }; |
| 277 | |
| 278 | /* ARGSUSED */ |
| 279 | int |
| 280 | connect(p, uap, retval) |
| 281 | struct proc *p; |
| 282 | register struct connect_args *uap; |
| 283 | int *retval; |
| 284 | { |
| 285 | struct file *fp; |
| 286 | register struct socket *so; |
| 287 | struct mbuf *nam; |
| 288 | int error, s; |
| 289 | |
| 290 | if (error = getsock(p->p_fd, uap->s, &fp)) |
| 291 | return (error); |
| 292 | so = (struct socket *)fp->f_data; |
| 293 | if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) |
| 294 | return (EALREADY); |
| 295 | if (error = sockargs(&nam, uap->name, uap->namelen, MT_SONAME)) |
| 296 | return (error); |
| 297 | error = soconnect(so, nam); |
| 298 | if (error) |
| 299 | goto bad; |
| 300 | if ((so->so_state & SS_NBIO) && (so->so_state & SS_ISCONNECTING)) { |
| 301 | m_freem(nam); |
| 302 | return (EINPROGRESS); |
| 303 | } |
| 304 | s = splnet(); |
| 305 | while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) |
| 306 | if (error = tsleep((caddr_t)&so->so_timeo, PSOCK | PCATCH, |
| 307 | netcon, 0)) |
| 308 | break; |
| 309 | if (error == 0) { |
| 310 | error = so->so_error; |
| 311 | so->so_error = 0; |
| 312 | } |
| 313 | splx(s); |
| 314 | bad: |
| 315 | so->so_state &= ~SS_ISCONNECTING; |
| 316 | m_freem(nam); |
| 317 | if (error == ERESTART) |
| 318 | error = EINTR; |
| 319 | return (error); |
| 320 | } |
| 321 | |
| 322 | struct socketpair_args { |
| 323 | int domain; |
| 324 | int type; |
| 325 | int protocol; |
| 326 | int *rsv; |
| 327 | }; |
| 328 | |
| 329 | int |
| 330 | socketpair(p, uap, retval) |
| 331 | struct proc *p; |
| 332 | register struct socketpair_args *uap; |
| 333 | int retval[]; |
| 334 | { |
| 335 | register struct filedesc *fdp = p->p_fd; |
| 336 | struct file *fp1, *fp2; |
| 337 | struct socket *so1, *so2; |
| 338 | int fd, error, sv[2]; |
| 339 | |
| 340 | if (error = socreate(uap->domain, &so1, uap->type, uap->protocol)) |
| 341 | return (error); |
| 342 | if (error = socreate(uap->domain, &so2, uap->type, uap->protocol)) |
| 343 | goto free1; |
| 344 | if (error = falloc(p, &fp1, &fd)) |
| 345 | goto free2; |
| 346 | sv[0] = fd; |
| 347 | fp1->f_flag = FREAD|FWRITE; |
| 348 | fp1->f_type = DTYPE_SOCKET; |
| 349 | fp1->f_ops = &socketops; |
| 350 | fp1->f_data = (caddr_t)so1; |
| 351 | if (error = falloc(p, &fp2, &fd)) |
| 352 | goto free3; |
| 353 | fp2->f_flag = FREAD|FWRITE; |
| 354 | fp2->f_type = DTYPE_SOCKET; |
| 355 | fp2->f_ops = &socketops; |
| 356 | fp2->f_data = (caddr_t)so2; |
| 357 | sv[1] = fd; |
| 358 | if (error = soconnect2(so1, so2)) |
| 359 | goto free4; |
| 360 | if (uap->type == SOCK_DGRAM) { |
| 361 | /* |
| 362 | * Datagram socket connection is asymmetric. |
| 363 | */ |
| 364 | if (error = soconnect2(so2, so1)) |
| 365 | goto free4; |
| 366 | } |
| 367 | error = copyout((caddr_t)sv, (caddr_t)uap->rsv, 2 * sizeof (int)); |
| 368 | retval[0] = sv[0]; /* XXX ??? */ |
| 369 | retval[1] = sv[1]; /* XXX ??? */ |
| 370 | return (error); |
| 371 | free4: |
| 372 | ffree(fp2); |
| 373 | fdp->fd_ofiles[sv[1]] = 0; |
| 374 | free3: |
| 375 | ffree(fp1); |
| 376 | fdp->fd_ofiles[sv[0]] = 0; |
| 377 | free2: |
| 378 | (void)soclose(so2); |
| 379 | free1: |
| 380 | (void)soclose(so1); |
| 381 | return (error); |
| 382 | } |
| 383 | |
| 384 | struct sendto_args { |
| 385 | int s; |
| 386 | caddr_t buf; |
| 387 | int len; |
| 388 | int flags; |
| 389 | caddr_t to; |
| 390 | int tolen; |
| 391 | }; |
| 392 | |
| 393 | int |
| 394 | sendto(p, uap, retval) |
| 395 | struct proc *p; |
| 396 | register struct sendto_args *uap; |
| 397 | int *retval; |
| 398 | { |
| 399 | struct msghdr msg; |
| 400 | struct iovec aiov; |
| 401 | int error; |
| 402 | |
| 403 | msg.msg_name = uap->to; |
| 404 | msg.msg_namelen = uap->tolen; |
| 405 | msg.msg_iov = &aiov; |
| 406 | msg.msg_iovlen = 1; |
| 407 | msg.msg_control = 0; |
| 408 | #ifdef COMPAT_43 |
| 409 | msg.msg_flags = 0; |
| 410 | #endif |
| 411 | aiov.iov_base = uap->buf; |
| 412 | aiov.iov_len = uap->len; |
| 413 | return (sendit(p, uap->s, &msg, uap->flags, retval)); |
| 414 | } |
| 415 | |
| 416 | #ifdef COMPAT_43 |
| 417 | |
| 418 | struct osend_args { |
| 419 | int s; |
| 420 | caddr_t buf; |
| 421 | int len; |
| 422 | int flags; |
| 423 | }; |
| 424 | |
| 425 | int |
| 426 | osend(p, uap, retval) |
| 427 | struct proc *p; |
| 428 | register struct osend_args *uap; |
| 429 | int *retval; |
| 430 | { |
| 431 | struct msghdr msg; |
| 432 | struct iovec aiov; |
| 433 | |
| 434 | msg.msg_name = 0; |
| 435 | msg.msg_namelen = 0; |
| 436 | msg.msg_iov = &aiov; |
| 437 | msg.msg_iovlen = 1; |
| 438 | aiov.iov_base = uap->buf; |
| 439 | aiov.iov_len = uap->len; |
| 440 | msg.msg_control = 0; |
| 441 | msg.msg_flags = 0; |
| 442 | return (sendit(p, uap->s, &msg, uap->flags, retval)); |
| 443 | } |
| 444 | |
| 445 | #define MSG_COMPAT 0x8000 |
| 446 | |
| 447 | struct osendmsg_args { |
| 448 | int s; |
| 449 | caddr_t msg; |
| 450 | int flags; |
| 451 | }; |
| 452 | |
| 453 | int |
| 454 | osendmsg(p, uap, retval) |
| 455 | struct proc *p; |
| 456 | register struct osendmsg_args *uap; |
| 457 | int *retval; |
| 458 | { |
| 459 | struct msghdr msg; |
| 460 | struct iovec aiov[UIO_SMALLIOV], *iov; |
| 461 | int error; |
| 462 | |
| 463 | if (error = copyin(uap->msg, (caddr_t)&msg, sizeof (struct omsghdr))) |
| 464 | return (error); |
| 465 | if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) { |
| 466 | if ((u_int)msg.msg_iovlen >= UIO_MAXIOV) |
| 467 | return (EMSGSIZE); |
| 468 | MALLOC(iov, struct iovec *, |
| 469 | sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV, |
| 470 | M_WAITOK); |
| 471 | } else |
| 472 | iov = aiov; |
| 473 | if (error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov, |
| 474 | (unsigned)(msg.msg_iovlen * sizeof (struct iovec)))) |
| 475 | goto done; |
| 476 | msg.msg_flags = MSG_COMPAT; |
| 477 | msg.msg_iov = iov; |
| 478 | error = sendit(p, uap->s, &msg, uap->flags, retval); |
| 479 | done: |
| 480 | if (iov != aiov) |
| 481 | FREE(iov, M_IOV); |
| 482 | return (error); |
| 483 | } |
| 484 | #endif |
| 485 | |
| 486 | struct sendmsg_args { |
| 487 | int s; |
| 488 | caddr_t msg; |
| 489 | int flags; |
| 490 | }; |
| 491 | |
| 492 | int |
| 493 | sendmsg(p, uap, retval) |
| 494 | struct proc *p; |
| 495 | register struct sendmsg_args *uap; |
| 496 | int *retval; |
| 497 | { |
| 498 | struct msghdr msg; |
| 499 | struct iovec aiov[UIO_SMALLIOV], *iov; |
| 500 | int error; |
| 501 | |
| 502 | if (error = copyin(uap->msg, (caddr_t)&msg, sizeof (msg))) |
| 503 | return (error); |
| 504 | if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) { |
| 505 | if ((u_int)msg.msg_iovlen >= UIO_MAXIOV) |
| 506 | return (EMSGSIZE); |
| 507 | MALLOC(iov, struct iovec *, |
| 508 | sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV, |
| 509 | M_WAITOK); |
| 510 | } else |
| 511 | iov = aiov; |
| 512 | if (msg.msg_iovlen && |
| 513 | (error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov, |
| 514 | (unsigned)(msg.msg_iovlen * sizeof (struct iovec))))) |
| 515 | goto done; |
| 516 | msg.msg_iov = iov; |
| 517 | #ifdef COMPAT_43 |
| 518 | msg.msg_flags = 0; |
| 519 | #endif |
| 520 | error = sendit(p, uap->s, &msg, uap->flags, retval); |
| 521 | done: |
| 522 | if (iov != aiov) |
| 523 | FREE(iov, M_IOV); |
| 524 | return (error); |
| 525 | } |
| 526 | |
| 527 | static int |
| 528 | sendit(p, s, mp, flags, retsize) |
| 529 | register struct proc *p; |
| 530 | int s; |
| 531 | register struct msghdr *mp; |
| 532 | int flags, *retsize; |
| 533 | { |
| 534 | struct file *fp; |
| 535 | struct uio auio; |
| 536 | register struct iovec *iov; |
| 537 | register int i; |
| 538 | struct mbuf *to, *control; |
| 539 | int len, error; |
| 540 | #ifdef KTRACE |
| 541 | struct iovec *ktriov = NULL; |
| 542 | #endif |
| 543 | |
| 544 | if (error = getsock(p->p_fd, s, &fp)) |
| 545 | return (error); |
| 546 | auio.uio_iov = mp->msg_iov; |
| 547 | auio.uio_iovcnt = mp->msg_iovlen; |
| 548 | auio.uio_segflg = UIO_USERSPACE; |
| 549 | auio.uio_rw = UIO_WRITE; |
| 550 | auio.uio_procp = p; |
| 551 | auio.uio_offset = 0; /* XXX */ |
| 552 | auio.uio_resid = 0; |
| 553 | iov = mp->msg_iov; |
| 554 | for (i = 0; i < mp->msg_iovlen; i++, iov++) { |
| 555 | if (iov->iov_len < 0) |
| 556 | return (EINVAL); |
| 557 | if ((auio.uio_resid += iov->iov_len) < 0) |
| 558 | return (EINVAL); |
| 559 | } |
| 560 | if (mp->msg_name) { |
| 561 | if (error = sockargs(&to, mp->msg_name, mp->msg_namelen, |
| 562 | MT_SONAME)) |
| 563 | return (error); |
| 564 | } else |
| 565 | to = 0; |
| 566 | if (mp->msg_control) { |
| 567 | if (mp->msg_controllen < sizeof(struct cmsghdr) |
| 568 | #ifdef COMPAT_43 |
| 569 | && mp->msg_flags != MSG_COMPAT |
| 570 | #endif |
| 571 | ) { |
| 572 | error = EINVAL; |
| 573 | goto bad; |
| 574 | } |
| 575 | if (error = sockargs(&control, mp->msg_control, |
| 576 | mp->msg_controllen, MT_CONTROL)) |
| 577 | goto bad; |
| 578 | #ifdef COMPAT_43 |
| 579 | if (mp->msg_flags == MSG_COMPAT) { |
| 580 | register struct cmsghdr *cm; |
| 581 | |
| 582 | M_PREPEND(control, sizeof(*cm), M_WAIT); |
| 583 | if (control == 0) { |
| 584 | error = ENOBUFS; |
| 585 | goto bad; |
| 586 | } else { |
| 587 | cm = mtod(control, struct cmsghdr *); |
| 588 | cm->cmsg_len = control->m_len; |
| 589 | cm->cmsg_level = SOL_SOCKET; |
| 590 | cm->cmsg_type = SCM_RIGHTS; |
| 591 | } |
| 592 | } |
| 593 | #endif |
| 594 | } else |
| 595 | control = 0; |
| 596 | #ifdef KTRACE |
| 597 | if (KTRPOINT(p, KTR_GENIO)) { |
| 598 | int iovlen = auio.uio_iovcnt * sizeof (struct iovec); |
| 599 | |
| 600 | MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK); |
| 601 | bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen); |
| 602 | } |
| 603 | #endif |
| 604 | len = auio.uio_resid; |
| 605 | if (error = sosend((struct socket *)fp->f_data, to, &auio, |
| 606 | (struct mbuf *)0, control, flags)) { |
| 607 | if (auio.uio_resid != len && (error == ERESTART || |
| 608 | error == EINTR || error == EWOULDBLOCK)) |
| 609 | error = 0; |
| 610 | if (error == EPIPE) |
| 611 | psignal(p, SIGPIPE); |
| 612 | } |
| 613 | if (error == 0) |
| 614 | *retsize = len - auio.uio_resid; |
| 615 | #ifdef KTRACE |
| 616 | if (ktriov != NULL) { |
| 617 | if (error == 0) |
| 618 | ktrgenio(p->p_tracep, s, UIO_WRITE, |
| 619 | ktriov, *retsize, error); |
| 620 | FREE(ktriov, M_TEMP); |
| 621 | } |
| 622 | #endif |
| 623 | bad: |
| 624 | if (to) |
| 625 | m_freem(to); |
| 626 | return (error); |
| 627 | } |
| 628 | |
| 629 | #ifdef COMPAT_43 |
| 630 | |
| 631 | struct orecvfrom_args { |
| 632 | int s; |
| 633 | caddr_t buf; |
| 634 | int len; |
| 635 | int flags; |
| 636 | caddr_t from; |
| 637 | int *fromlenaddr; |
| 638 | }; |
| 639 | |
| 640 | int |
| 641 | orecvfrom(p, uap, retval) |
| 642 | struct proc *p; |
| 643 | struct orecvfrom_args *uap; |
| 644 | int *retval; |
| 645 | { |
| 646 | |
| 647 | uap->flags |= MSG_COMPAT; |
| 648 | return (recvfrom(p, uap, retval)); |
| 649 | } |
| 650 | #endif |
| 651 | |
| 652 | struct recvfrom_args { |
| 653 | int s; |
| 654 | caddr_t buf; |
| 655 | int len; |
| 656 | int flags; |
| 657 | caddr_t from; |
| 658 | int *fromlenaddr; |
| 659 | }; |
| 660 | |
| 661 | int |
| 662 | recvfrom(p, uap, retval) |
| 663 | struct proc *p; |
| 664 | register struct recvfrom_args *uap; |
| 665 | int *retval; |
| 666 | { |
| 667 | struct msghdr msg; |
| 668 | struct iovec aiov; |
| 669 | int error; |
| 670 | |
| 671 | if (uap->fromlenaddr) { |
| 672 | if (error = copyin((caddr_t)uap->fromlenaddr, |
| 673 | (caddr_t)&msg.msg_namelen, sizeof (msg.msg_namelen))) |
| 674 | return (error); |
| 675 | } else |
| 676 | msg.msg_namelen = 0; |
| 677 | msg.msg_name = uap->from; |
| 678 | msg.msg_iov = &aiov; |
| 679 | msg.msg_iovlen = 1; |
| 680 | aiov.iov_base = uap->buf; |
| 681 | aiov.iov_len = uap->len; |
| 682 | msg.msg_control = 0; |
| 683 | msg.msg_flags = uap->flags; |
| 684 | return (recvit(p, uap->s, &msg, (caddr_t)uap->fromlenaddr, retval)); |
| 685 | } |
| 686 | |
| 687 | #ifdef COMPAT_43 |
| 688 | |
| 689 | struct orecv_args { |
| 690 | int s; |
| 691 | caddr_t buf; |
| 692 | int len; |
| 693 | int flags; |
| 694 | }; |
| 695 | |
| 696 | int |
| 697 | orecv(p, uap, retval) |
| 698 | struct proc *p; |
| 699 | register struct orecv_args *uap; |
| 700 | int *retval; |
| 701 | { |
| 702 | struct msghdr msg; |
| 703 | struct iovec aiov; |
| 704 | |
| 705 | msg.msg_name = 0; |
| 706 | msg.msg_namelen = 0; |
| 707 | msg.msg_iov = &aiov; |
| 708 | msg.msg_iovlen = 1; |
| 709 | aiov.iov_base = uap->buf; |
| 710 | aiov.iov_len = uap->len; |
| 711 | msg.msg_control = 0; |
| 712 | msg.msg_flags = uap->flags; |
| 713 | return (recvit(p, uap->s, &msg, (caddr_t)0, retval)); |
| 714 | } |
| 715 | |
| 716 | /* |
| 717 | * Old recvmsg. This code takes advantage of the fact that the old msghdr |
| 718 | * overlays the new one, missing only the flags, and with the (old) access |
| 719 | * rights where the control fields are now. |
| 720 | */ |
| 721 | |
| 722 | struct orecvmsg_args { |
| 723 | int s; |
| 724 | struct omsghdr *msg; |
| 725 | int flags; |
| 726 | }; |
| 727 | |
| 728 | int |
| 729 | orecvmsg(p, uap, retval) |
| 730 | struct proc *p; |
| 731 | register struct orecvmsg_args *uap; |
| 732 | int *retval; |
| 733 | { |
| 734 | struct msghdr msg; |
| 735 | struct iovec aiov[UIO_SMALLIOV], *iov; |
| 736 | int error; |
| 737 | |
| 738 | if (error = copyin((caddr_t)uap->msg, (caddr_t)&msg, |
| 739 | sizeof (struct omsghdr))) |
| 740 | return (error); |
| 741 | if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) { |
| 742 | if ((u_int)msg.msg_iovlen >= UIO_MAXIOV) |
| 743 | return (EMSGSIZE); |
| 744 | MALLOC(iov, struct iovec *, |
| 745 | sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV, |
| 746 | M_WAITOK); |
| 747 | } else |
| 748 | iov = aiov; |
| 749 | msg.msg_flags = uap->flags | MSG_COMPAT; |
| 750 | if (error = copyin((caddr_t)msg.msg_iov, (caddr_t)iov, |
| 751 | (unsigned)(msg.msg_iovlen * sizeof (struct iovec)))) |
| 752 | goto done; |
| 753 | msg.msg_iov = iov; |
| 754 | error = recvit(p, uap->s, &msg, (caddr_t)&uap->msg->msg_namelen, retval); |
| 755 | |
| 756 | if (msg.msg_controllen && error == 0) |
| 757 | error = copyout((caddr_t)&msg.msg_controllen, |
| 758 | (caddr_t)&uap->msg->msg_accrightslen, sizeof (int)); |
| 759 | done: |
| 760 | if (iov != aiov) |
| 761 | FREE(iov, M_IOV); |
| 762 | return (error); |
| 763 | } |
| 764 | #endif |
| 765 | |
| 766 | struct recvmsg_args { |
| 767 | int s; |
| 768 | struct msghdr *msg; |
| 769 | int flags; |
| 770 | }; |
| 771 | |
| 772 | int |
| 773 | recvmsg(p, uap, retval) |
| 774 | struct proc *p; |
| 775 | register struct recvmsg_args *uap; |
| 776 | int *retval; |
| 777 | { |
| 778 | struct msghdr msg; |
| 779 | struct iovec aiov[UIO_SMALLIOV], *uiov, *iov; |
| 780 | register int error; |
| 781 | |
| 782 | if (error = copyin((caddr_t)uap->msg, (caddr_t)&msg, sizeof (msg))) |
| 783 | return (error); |
| 784 | if ((u_int)msg.msg_iovlen >= UIO_SMALLIOV) { |
| 785 | if ((u_int)msg.msg_iovlen >= UIO_MAXIOV) |
| 786 | return (EMSGSIZE); |
| 787 | MALLOC(iov, struct iovec *, |
| 788 | sizeof(struct iovec) * (u_int)msg.msg_iovlen, M_IOV, |
| 789 | M_WAITOK); |
| 790 | } else |
| 791 | iov = aiov; |
| 792 | #ifdef COMPAT_43 |
| 793 | msg.msg_flags = uap->flags &~ MSG_COMPAT; |
| 794 | #else |
| 795 | msg.msg_flags = uap->flags; |
| 796 | #endif |
| 797 | uiov = msg.msg_iov; |
| 798 | msg.msg_iov = iov; |
| 799 | if (error = copyin((caddr_t)uiov, (caddr_t)iov, |
| 800 | (unsigned)(msg.msg_iovlen * sizeof (struct iovec)))) |
| 801 | goto done; |
| 802 | if ((error = recvit(p, uap->s, &msg, (caddr_t)0, retval)) == 0) { |
| 803 | msg.msg_iov = uiov; |
| 804 | error = copyout((caddr_t)&msg, (caddr_t)uap->msg, sizeof(msg)); |
| 805 | } |
| 806 | done: |
| 807 | if (iov != aiov) |
| 808 | FREE(iov, M_IOV); |
| 809 | return (error); |
| 810 | } |
| 811 | |
| 812 | int |
| 813 | recvit(p, s, mp, namelenp, retsize) |
| 814 | register struct proc *p; |
| 815 | int s; |
| 816 | register struct msghdr *mp; |
| 817 | caddr_t namelenp; |
| 818 | int *retsize; |
| 819 | { |
| 820 | struct file *fp; |
| 821 | struct uio auio; |
| 822 | register struct iovec *iov; |
| 823 | register int i; |
| 824 | int len, error; |
| 825 | struct mbuf *from = 0, *control = 0; |
| 826 | #ifdef KTRACE |
| 827 | struct iovec *ktriov = NULL; |
| 828 | #endif |
| 829 | |
| 830 | if (error = getsock(p->p_fd, s, &fp)) |
| 831 | return (error); |
| 832 | auio.uio_iov = mp->msg_iov; |
| 833 | auio.uio_iovcnt = mp->msg_iovlen; |
| 834 | auio.uio_segflg = UIO_USERSPACE; |
| 835 | auio.uio_rw = UIO_READ; |
| 836 | auio.uio_procp = p; |
| 837 | auio.uio_offset = 0; /* XXX */ |
| 838 | auio.uio_resid = 0; |
| 839 | iov = mp->msg_iov; |
| 840 | for (i = 0; i < mp->msg_iovlen; i++, iov++) { |
| 841 | if (iov->iov_len < 0) |
| 842 | return (EINVAL); |
| 843 | if ((auio.uio_resid += iov->iov_len) < 0) |
| 844 | return (EINVAL); |
| 845 | } |
| 846 | #ifdef KTRACE |
| 847 | if (KTRPOINT(p, KTR_GENIO)) { |
| 848 | int iovlen = auio.uio_iovcnt * sizeof (struct iovec); |
| 849 | |
| 850 | MALLOC(ktriov, struct iovec *, iovlen, M_TEMP, M_WAITOK); |
| 851 | bcopy((caddr_t)auio.uio_iov, (caddr_t)ktriov, iovlen); |
| 852 | } |
| 853 | #endif |
| 854 | len = auio.uio_resid; |
| 855 | if (error = soreceive((struct socket *)fp->f_data, &from, &auio, |
| 856 | (struct mbuf **)0, mp->msg_control ? &control : (struct mbuf **)0, |
| 857 | &mp->msg_flags)) { |
| 858 | if (auio.uio_resid != len && (error == ERESTART || |
| 859 | error == EINTR || error == EWOULDBLOCK)) |
| 860 | error = 0; |
| 861 | } |
| 862 | #ifdef KTRACE |
| 863 | if (ktriov != NULL) { |
| 864 | if (error == 0) |
| 865 | ktrgenio(p->p_tracep, s, UIO_READ, |
| 866 | ktriov, len - auio.uio_resid, error); |
| 867 | FREE(ktriov, M_TEMP); |
| 868 | } |
| 869 | #endif |
| 870 | if (error) |
| 871 | goto out; |
| 872 | *retsize = len - auio.uio_resid; |
| 873 | if (mp->msg_name) { |
| 874 | len = mp->msg_namelen; |
| 875 | if (len <= 0 || from == 0) |
| 876 | len = 0; |
| 877 | else { |
| 878 | #ifdef COMPAT_43 |
| 879 | if (mp->msg_flags & MSG_COMPAT) |
| 880 | mtod(from, struct osockaddr *)->sa_family = |
| 881 | mtod(from, struct sockaddr *)->sa_family; |
| 882 | #endif |
| 883 | if (len > from->m_len) |
| 884 | len = from->m_len; |
| 885 | /* else if len < from->m_len ??? */ |
| 886 | if (error = copyout(mtod(from, caddr_t), |
| 887 | (caddr_t)mp->msg_name, (unsigned)len)) |
| 888 | goto out; |
| 889 | } |
| 890 | mp->msg_namelen = len; |
| 891 | if (namelenp && |
| 892 | (error = copyout((caddr_t)&len, namelenp, sizeof (int)))) { |
| 893 | #ifdef COMPAT_43 |
| 894 | if (mp->msg_flags & MSG_COMPAT) |
| 895 | error = 0; /* old recvfrom didn't check */ |
| 896 | else |
| 897 | #endif |
| 898 | goto out; |
| 899 | } |
| 900 | } |
| 901 | if (mp->msg_control) { |
| 902 | #ifdef COMPAT_43 |
| 903 | /* |
| 904 | * We assume that old recvmsg calls won't receive access |
| 905 | * rights and other control info, esp. as control info |
| 906 | * is always optional and those options didn't exist in 4.3. |
| 907 | * If we receive rights, trim the cmsghdr; anything else |
| 908 | * is tossed. |
| 909 | */ |
| 910 | if (control && mp->msg_flags & MSG_COMPAT) { |
| 911 | if (mtod(control, struct cmsghdr *)->cmsg_level != |
| 912 | SOL_SOCKET || |
| 913 | mtod(control, struct cmsghdr *)->cmsg_type != |
| 914 | SCM_RIGHTS) { |
| 915 | mp->msg_controllen = 0; |
| 916 | goto out; |
| 917 | } |
| 918 | control->m_len -= sizeof (struct cmsghdr); |
| 919 | control->m_data += sizeof (struct cmsghdr); |
| 920 | } |
| 921 | #endif |
| 922 | len = mp->msg_controllen; |
| 923 | if (len <= 0 || control == 0) |
| 924 | len = 0; |
| 925 | else { |
| 926 | if (len >= control->m_len) |
| 927 | len = control->m_len; |
| 928 | else |
| 929 | mp->msg_flags |= MSG_CTRUNC; |
| 930 | error = copyout((caddr_t)mtod(control, caddr_t), |
| 931 | (caddr_t)mp->msg_control, (unsigned)len); |
| 932 | } |
| 933 | mp->msg_controllen = len; |
| 934 | } |
| 935 | out: |
| 936 | if (from) |
| 937 | m_freem(from); |
| 938 | if (control) |
| 939 | m_freem(control); |
| 940 | return (error); |
| 941 | } |
| 942 | |
| 943 | struct shutdown_args { |
| 944 | int s; |
| 945 | int how; |
| 946 | }; |
| 947 | |
| 948 | /* ARGSUSED */ |
| 949 | int |
| 950 | shutdown(p, uap, retval) |
| 951 | struct proc *p; |
| 952 | register struct shutdown_args *uap; |
| 953 | int *retval; |
| 954 | { |
| 955 | struct file *fp; |
| 956 | int error; |
| 957 | |
| 958 | if (error = getsock(p->p_fd, uap->s, &fp)) |
| 959 | return (error); |
| 960 | return (soshutdown((struct socket *)fp->f_data, uap->how)); |
| 961 | } |
| 962 | |
| 963 | struct setsocketopt_args { |
| 964 | int s; |
| 965 | int level; |
| 966 | int name; |
| 967 | caddr_t val; |
| 968 | int valsize; |
| 969 | }; |
| 970 | |
| 971 | /* ARGSUSED */ |
| 972 | int |
| 973 | setsockopt(p, uap, retval) |
| 974 | struct proc *p; |
| 975 | register struct setsocketopt_args *uap; |
| 976 | int *retval; |
| 977 | { |
| 978 | struct file *fp; |
| 979 | struct mbuf *m = NULL; |
| 980 | int error; |
| 981 | |
| 982 | if (error = getsock(p->p_fd, uap->s, &fp)) |
| 983 | return (error); |
| 984 | if (uap->valsize > MLEN) |
| 985 | return (EINVAL); |
| 986 | if (uap->val) { |
| 987 | m = m_get(M_WAIT, MT_SOOPTS); |
| 988 | if (m == NULL) |
| 989 | return (ENOBUFS); |
| 990 | if (error = copyin(uap->val, mtod(m, caddr_t), |
| 991 | (u_int)uap->valsize)) { |
| 992 | (void) m_free(m); |
| 993 | return (error); |
| 994 | } |
| 995 | m->m_len = uap->valsize; |
| 996 | } |
| 997 | return (sosetopt((struct socket *)fp->f_data, uap->level, |
| 998 | uap->name, m)); |
| 999 | } |
| 1000 | |
| 1001 | struct getsockopt_args { |
| 1002 | int s; |
| 1003 | int level; |
| 1004 | int name; |
| 1005 | caddr_t val; |
| 1006 | int *avalsize; |
| 1007 | }; |
| 1008 | |
| 1009 | /* ARGSUSED */ |
| 1010 | int |
| 1011 | getsockopt(p, uap, retval) |
| 1012 | struct proc *p; |
| 1013 | register struct getsockopt_args *uap; |
| 1014 | int *retval; |
| 1015 | { |
| 1016 | struct file *fp; |
| 1017 | struct mbuf *m = NULL; |
| 1018 | int valsize, error; |
| 1019 | |
| 1020 | if (error = getsock(p->p_fd, uap->s, &fp)) |
| 1021 | return (error); |
| 1022 | if (uap->val) { |
| 1023 | if (error = copyin((caddr_t)uap->avalsize, (caddr_t)&valsize, |
| 1024 | sizeof (valsize))) |
| 1025 | return (error); |
| 1026 | } else |
| 1027 | valsize = 0; |
| 1028 | if ((error = sogetopt((struct socket *)fp->f_data, uap->level, |
| 1029 | uap->name, &m)) == 0 && uap->val && valsize && m != NULL) { |
| 1030 | if (valsize > m->m_len) |
| 1031 | valsize = m->m_len; |
| 1032 | error = copyout(mtod(m, caddr_t), uap->val, (u_int)valsize); |
| 1033 | if (error == 0) |
| 1034 | error = copyout((caddr_t)&valsize, |
| 1035 | (caddr_t)uap->avalsize, sizeof (valsize)); |
| 1036 | } |
| 1037 | if (m != NULL) |
| 1038 | (void) m_free(m); |
| 1039 | return (error); |
| 1040 | } |
| 1041 | |
| 1042 | /* ARGSUSED */ |
| 1043 | int |
| 1044 | pipe(p, uap, retval) |
| 1045 | struct proc *p; |
| 1046 | struct args *uap; |
| 1047 | int retval[]; |
| 1048 | { |
| 1049 | register struct filedesc *fdp = p->p_fd; |
| 1050 | struct file *rf, *wf; |
| 1051 | struct socket *rso, *wso; |
| 1052 | int fd, error; |
| 1053 | |
| 1054 | if (error = socreate(AF_UNIX, &rso, SOCK_STREAM, 0)) |
| 1055 | return (error); |
| 1056 | if (error = socreate(AF_UNIX, &wso, SOCK_STREAM, 0)) |
| 1057 | goto free1; |
| 1058 | if (error = falloc(p, &rf, &fd)) |
| 1059 | goto free2; |
| 1060 | retval[0] = fd; |
| 1061 | rf->f_flag = FREAD; |
| 1062 | rf->f_type = DTYPE_SOCKET; |
| 1063 | rf->f_ops = &socketops; |
| 1064 | rf->f_data = (caddr_t)rso; |
| 1065 | if (error = falloc(p, &wf, &fd)) |
| 1066 | goto free3; |
| 1067 | wf->f_flag = FWRITE; |
| 1068 | wf->f_type = DTYPE_SOCKET; |
| 1069 | wf->f_ops = &socketops; |
| 1070 | wf->f_data = (caddr_t)wso; |
| 1071 | retval[1] = fd; |
| 1072 | if (error = unp_connect2(wso, rso)) |
| 1073 | goto free4; |
| 1074 | return (0); |
| 1075 | free4: |
| 1076 | ffree(wf); |
| 1077 | fdp->fd_ofiles[retval[1]] = 0; |
| 1078 | free3: |
| 1079 | ffree(rf); |
| 1080 | fdp->fd_ofiles[retval[0]] = 0; |
| 1081 | free2: |
| 1082 | (void)soclose(wso); |
| 1083 | free1: |
| 1084 | (void)soclose(rso); |
| 1085 | return (error); |
| 1086 | } |
| 1087 | |
| 1088 | /* |
| 1089 | * Get socket name. |
| 1090 | */ |
| 1091 | struct getsockname1_args { |
| 1092 | int fdes; |
| 1093 | caddr_t asa; |
| 1094 | int *alen; |
| 1095 | #ifdef COMPAT_43 |
| 1096 | int compat_43; |
| 1097 | #endif |
| 1098 | }; |
| 1099 | |
| 1100 | #ifdef COMPAT_43 |
| 1101 | |
| 1102 | int getsockname1(struct proc *, struct getsockname1_args *, int *); |
| 1103 | |
| 1104 | struct getsockname_args { |
| 1105 | int fdes; |
| 1106 | caddr_t asa; |
| 1107 | int *alen; |
| 1108 | int compat_43; |
| 1109 | }; |
| 1110 | |
| 1111 | int |
| 1112 | getsockname(p, uap, retval) |
| 1113 | struct proc *p; |
| 1114 | struct getsockname_args *uap; |
| 1115 | int *retval; |
| 1116 | { |
| 1117 | |
| 1118 | uap->compat_43 = 0; |
| 1119 | return (getsockname1(p, (struct getsockname1_args *)uap, retval)); |
| 1120 | } |
| 1121 | |
| 1122 | struct ogetsockname_args { |
| 1123 | int fdes; |
| 1124 | caddr_t asa; |
| 1125 | int *alen; |
| 1126 | int compat_43; |
| 1127 | }; |
| 1128 | |
| 1129 | int |
| 1130 | ogetsockname(p, uap, retval) |
| 1131 | struct proc *p; |
| 1132 | struct ogetsockname_args *uap; |
| 1133 | int *retval; |
| 1134 | { |
| 1135 | |
| 1136 | uap->compat_43 = 1; |
| 1137 | return (getsockname1(p, (struct getsockname1_args *)uap, retval)); |
| 1138 | } |
| 1139 | #else /* COMPAT_43 */ |
| 1140 | |
| 1141 | #define getsockname1 getsockname |
| 1142 | #endif |
| 1143 | |
| 1144 | /* ARGSUSED */ |
| 1145 | int |
| 1146 | getsockname1(p, uap, retval) |
| 1147 | struct proc *p; |
| 1148 | register struct getsockname1_args *uap; |
| 1149 | int *retval; |
| 1150 | { |
| 1151 | struct file *fp; |
| 1152 | register struct socket *so; |
| 1153 | struct mbuf *m; |
| 1154 | int len, error; |
| 1155 | |
| 1156 | if (error = getsock(p->p_fd, uap->fdes, &fp)) |
| 1157 | return (error); |
| 1158 | if (error = copyin((caddr_t)uap->alen, (caddr_t)&len, sizeof (len))) |
| 1159 | return (error); |
| 1160 | so = (struct socket *)fp->f_data; |
| 1161 | m = m_getclr(M_WAIT, MT_SONAME); |
| 1162 | if (m == NULL) |
| 1163 | return (ENOBUFS); |
| 1164 | if (error = (*so->so_proto->pr_usrreq)(so, PRU_SOCKADDR, 0, m, 0, 0)) |
| 1165 | goto bad; |
| 1166 | if (len > m->m_len) |
| 1167 | len = m->m_len; |
| 1168 | #ifdef COMPAT_43 |
| 1169 | if (uap->compat_43) |
| 1170 | mtod(m, struct osockaddr *)->sa_family = |
| 1171 | mtod(m, struct sockaddr *)->sa_family; |
| 1172 | #endif |
| 1173 | error = copyout(mtod(m, caddr_t), (caddr_t)uap->asa, (u_int)len); |
| 1174 | if (error == 0) |
| 1175 | error = copyout((caddr_t)&len, (caddr_t)uap->alen, |
| 1176 | sizeof (len)); |
| 1177 | bad: |
| 1178 | m_freem(m); |
| 1179 | return (error); |
| 1180 | } |
| 1181 | |
| 1182 | /* |
| 1183 | * Get name of peer for connected socket. |
| 1184 | */ |
| 1185 | struct getpeername1_args { |
| 1186 | int fdes; |
| 1187 | caddr_t asa; |
| 1188 | int *alen; |
| 1189 | #ifdef COMPAT_43 |
| 1190 | int compat_43; |
| 1191 | #endif |
| 1192 | }; |
| 1193 | |
| 1194 | #ifdef COMPAT_43 |
| 1195 | |
| 1196 | int getpeername1(struct proc *, struct getpeername1_args *, int *); |
| 1197 | |
| 1198 | struct getpeername_args { |
| 1199 | int fdes; |
| 1200 | caddr_t asa; |
| 1201 | int *alen; |
| 1202 | int compat_43; |
| 1203 | }; |
| 1204 | |
| 1205 | int |
| 1206 | getpeername(p, uap, retval) |
| 1207 | struct proc *p; |
| 1208 | struct getpeername_args *uap; |
| 1209 | int *retval; |
| 1210 | { |
| 1211 | |
| 1212 | uap->compat_43 = 0; |
| 1213 | return (getpeername1(p, (struct getpeername1_args *)uap, retval)); |
| 1214 | } |
| 1215 | |
| 1216 | struct ogetpeername_args { |
| 1217 | int fdes; |
| 1218 | caddr_t asa; |
| 1219 | int *alen; |
| 1220 | int compat_43; |
| 1221 | }; |
| 1222 | |
| 1223 | int |
| 1224 | ogetpeername(p, uap, retval) |
| 1225 | struct proc *p; |
| 1226 | struct ogetpeername_args *uap; |
| 1227 | int *retval; |
| 1228 | { |
| 1229 | |
| 1230 | uap->compat_43 = 1; |
| 1231 | return (getpeername1(p, (struct getpeername1_args *)uap, retval)); |
| 1232 | } |
| 1233 | #else /* COMPAT_43 */ |
| 1234 | |
| 1235 | #define getpeername1 getpeername |
| 1236 | #endif |
| 1237 | |
| 1238 | /* ARGSUSED */ |
| 1239 | int |
| 1240 | getpeername1(p, uap, retval) |
| 1241 | struct proc *p; |
| 1242 | register struct getpeername1_args *uap; |
| 1243 | int *retval; |
| 1244 | { |
| 1245 | struct file *fp; |
| 1246 | register struct socket *so; |
| 1247 | struct mbuf *m; |
| 1248 | int len, error; |
| 1249 | |
| 1250 | if (error = getsock(p->p_fd, uap->fdes, &fp)) |
| 1251 | return (error); |
| 1252 | so = (struct socket *)fp->f_data; |
| 1253 | if ((so->so_state & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0) |
| 1254 | return (ENOTCONN); |
| 1255 | m = m_getclr(M_WAIT, MT_SONAME); |
| 1256 | if (m == NULL) |
| 1257 | return (ENOBUFS); |
| 1258 | if (error = copyin((caddr_t)uap->alen, (caddr_t)&len, sizeof (len))) |
| 1259 | return (error); |
| 1260 | if (error = (*so->so_proto->pr_usrreq)(so, PRU_PEERADDR, 0, m, 0, 0)) |
| 1261 | goto bad; |
| 1262 | if (len > m->m_len) |
| 1263 | len = m->m_len; |
| 1264 | #ifdef COMPAT_43 |
| 1265 | if (uap->compat_43) |
| 1266 | mtod(m, struct osockaddr *)->sa_family = |
| 1267 | mtod(m, struct sockaddr *)->sa_family; |
| 1268 | #endif |
| 1269 | if (error = copyout(mtod(m, caddr_t), (caddr_t)uap->asa, (u_int)len)) |
| 1270 | goto bad; |
| 1271 | error = copyout((caddr_t)&len, (caddr_t)uap->alen, sizeof (len)); |
| 1272 | bad: |
| 1273 | m_freem(m); |
| 1274 | return (error); |
| 1275 | } |
| 1276 | |
| 1277 | int |
| 1278 | sockargs(mp, buf, buflen, type) |
| 1279 | struct mbuf **mp; |
| 1280 | caddr_t buf; |
| 1281 | int buflen, type; |
| 1282 | { |
| 1283 | register struct mbuf *m; |
| 1284 | int error; |
| 1285 | |
| 1286 | if ((u_int)buflen > MLEN) { |
| 1287 | #ifdef COMPAT_43 |
| 1288 | if (type == MT_SONAME && (u_int)buflen <= 112) |
| 1289 | buflen = MLEN; /* unix domain compat. hack */ |
| 1290 | else |
| 1291 | #endif |
| 1292 | return (EINVAL); |
| 1293 | } |
| 1294 | m = m_get(M_WAIT, type); |
| 1295 | if (m == NULL) |
| 1296 | return (ENOBUFS); |
| 1297 | m->m_len = buflen; |
| 1298 | error = copyin(buf, mtod(m, caddr_t), (u_int)buflen); |
| 1299 | if (error) { |
| 1300 | (void) m_free(m); |
| 1301 | return(error); |
| 1302 | } |
| 1303 | *mp = m; |
| 1304 | if (type == MT_SONAME) { |
| 1305 | register struct sockaddr *sa = mtod(m, struct sockaddr *); |
| 1306 | |
| 1307 | #if defined(COMPAT_43) && BYTE_ORDER != BIG_ENDIAN |
| 1308 | if (sa->sa_family == 0 && sa->sa_len < AF_MAX) |
| 1309 | sa->sa_family = sa->sa_len; |
| 1310 | #endif |
| 1311 | sa->sa_len = buflen; |
| 1312 | } |
| 1313 | return (0); |
| 1314 | } |
| 1315 | |
| 1316 | int |
| 1317 | getsock(fdp, fdes, fpp) |
| 1318 | struct filedesc *fdp; |
| 1319 | int fdes; |
| 1320 | struct file **fpp; |
| 1321 | { |
| 1322 | register struct file *fp; |
| 1323 | |
| 1324 | if ((unsigned)fdes >= fdp->fd_nfiles || |
| 1325 | (fp = fdp->fd_ofiles[fdes]) == NULL) |
| 1326 | return (EBADF); |
| 1327 | if (fp->f_type != DTYPE_SOCKET) |
| 1328 | return (ENOTSOCK); |
| 1329 | *fpp = fp; |
| 1330 | return (0); |
| 1331 | } |