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