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1.1 ! root 1: /* ! 2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights ! 7: * Reserved. This file contains Original Code and/or Modifications of ! 8: * Original Code as defined in and that are subject to the Apple Public ! 9: * Source License Version 1.1 (the "License"). You may not use this file ! 10: * except in compliance with the License. Please obtain a copy of the ! 11: * License at http://www.apple.com/publicsource and read it before using ! 12: * this file. ! 13: * ! 14: * The Original Code and all software distributed under the License are ! 15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 19: * License for the specific language governing rights and limitations ! 20: * under the License. ! 21: * ! 22: * @APPLE_LICENSE_HEADER_END@ ! 23: */ ! 24: ! 25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ ! 26: /* ! 27: * Copyright (c) 1982, 1986, 1988, 1990, 1993 ! 28: * The Regents of the University of California. All rights reserved. ! 29: * ! 30: * Redistribution and use in source and binary forms, with or without ! 31: * modification, are permitted provided that the following conditions ! 32: * are met: ! 33: * 1. Redistributions of source code must retain the above copyright ! 34: * notice, this list of conditions and the following disclaimer. ! 35: * 2. Redistributions in binary form must reproduce the above copyright ! 36: * notice, this list of conditions and the following disclaimer in the ! 37: * documentation and/or other materials provided with the distribution. ! 38: * 3. All advertising materials mentioning features or use of this software ! 39: * must display the following acknowledgement: ! 40: * This product includes software developed by the University of ! 41: * California, Berkeley and its contributors. ! 42: * 4. Neither the name of the University nor the names of its contributors ! 43: * may be used to endorse or promote products derived from this software ! 44: * without specific prior written permission. ! 45: * ! 46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ! 47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ! 48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ! 49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE ! 50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ! 51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ! 52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ! 53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ! 54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ! 55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ! 56: * SUCH DAMAGE. ! 57: * ! 58: * @(#)uipc_socket.c 8.6 (Berkeley) 5/2/95 ! 59: */ ! 60: ! 61: #include <sys/param.h> ! 62: #include <sys/systm.h> ! 63: #include <sys/proc.h> ! 64: #include <sys/file.h> ! 65: #include <sys/malloc.h> ! 66: #include <sys/mbuf.h> ! 67: #include <sys/domain.h> ! 68: #include <sys/time.h> ! 69: #include <sys/kernel.h> ! 70: #include <sys/protosw.h> ! 71: #include <sys/socket.h> ! 72: #include <sys/socketvar.h> ! 73: #include <sys/resourcevar.h> ! 74: #include <net/route.h> ! 75: #include <net/if.h> ! 76: #include <netinet/in.h> ! 77: #include <netinet/in_systm.h> ! 78: #include <netinet/ip.h> ! 79: #include <netinet/in_pcb.h> ! 80: #include <machine/spl.h> ! 81: ! 82: #if NEXT ! 83: #import <kern/kdebug.h> ! 84: ! 85: #if KDEBUG ! 86: ! 87: #define DBG_LAYER_IN_BEG NETDBG_CODE(DBG_NETSOCK, 0) ! 88: #define DBG_LAYER_IN_END NETDBG_CODE(DBG_NETSOCK, 2) ! 89: #define DBG_LAYER_OUT_BEG NETDBG_CODE(DBG_NETSOCK, 1) ! 90: #define DBG_LAYER_OUT_END NETDBG_CODE(DBG_NETSOCK, 3) ! 91: #define DBG_FNC_SOSEND NETDBG_CODE(DBG_NETSOCK, (4 << 8) | 1) ! 92: #define DBG_FNC_SORECEIVE NETDBG_CODE(DBG_NETSOCK, (8 << 8)) ! 93: ! 94: #endif ! 95: #endif ! 96: ! 97: ! 98: int so_cache_hw = 0; ! 99: int so_cache_timeouts = 0; ! 100: int so_cache_max_freed = 0; ! 101: int cached_sock_count = 0; ! 102: struct socket *socket_cache_head = 0; ! 103: struct socket *socket_cache_tail = 0; ! 104: u_long so_cache_time = 0; ! 105: int so_cache_init_done = 0; ! 106: struct zone *so_cache_zone; ! 107: extern int get_inpcb_str_size(); ! 108: extern int get_tcp_str_size(); ! 109: ! 110: void so_cache_timer(); ! 111: ! 112: /* ! 113: * Socket operation routines. ! 114: * These routines are called by the routines in ! 115: * sys_socket.c or from a system process, and ! 116: * implement the semantics of socket operations by ! 117: * switching out to the protocol specific routines. ! 118: */ ! 119: /*ARGSUSED*/ ! 120: ! 121: ! 122: void socketinit() ! 123: { ! 124: vm_size_t str_size; ! 125: ! 126: so_cache_init_done = 1; ! 127: ! 128: timeout(so_cache_timer, NULL, (SO_CACHE_FLUSH_INTERVAL * hz)); ! 129: str_size = (vm_size_t)( sizeof(struct socket) + 4 + ! 130: get_inpcb_str_size() + 4 + ! 131: get_tcp_str_size()); ! 132: so_cache_zone = zinit (str_size, 120000*str_size, 8192, FALSE, "socache zone"); ! 133: #if TEMPDEBUG ! 134: kprintf("cached_sock_alloc -- so_cache_zone size is %x\n", str_size); ! 135: #endif ! 136: ! 137: } ! 138: ! 139: ! 140: void cached_sock_alloc(so) ! 141: struct socket **so; ! 142: { ! 143: caddr_t temp; ! 144: int s; ! 145: register u_long offset; ! 146: ! 147: ! 148: s = splnet(); ! 149: if (cached_sock_count) { ! 150: cached_sock_count--; ! 151: *so = socket_cache_head; ! 152: if (*so == 0) ! 153: panic("cached_sock_alloc: cached sock is null"); ! 154: ! 155: socket_cache_head = socket_cache_head->cache_next; ! 156: if (socket_cache_head) ! 157: socket_cache_head->cache_prev = 0; ! 158: else ! 159: socket_cache_tail = 0; ! 160: splx(s); ! 161: ! 162: temp = (*so)->so_saved_pcb; ! 163: bzero((caddr_t)*so, sizeof(struct socket)); ! 164: #if TEMPDEBUG ! 165: kprintf("cached_sock_alloc - retreiving cached sock %x - count == %d\n", *so, ! 166: cached_sock_count); ! 167: #endif ! 168: (*so)->so_saved_pcb = temp; ! 169: } ! 170: else { ! 171: #if TEMPDEBUG ! 172: kprintf("Allocating cached sock %x from memory\n", *so); ! 173: #endif ! 174: ! 175: splx(s); ! 176: *so = (caddr_t) zalloc(so_cache_zone); ! 177: if (*so == 0) ! 178: panic("cached_sock_alloc -- Out of zone space"); ! 179: ! 180: bzero((caddr_t)*so, sizeof(struct socket)); ! 181: ! 182: /* ! 183: * Define offsets for extra structures into our single block of ! 184: * memory. Align extra structures on longword boundaries. ! 185: */ ! 186: ! 187: ! 188: offset = *so; ! 189: offset += sizeof(struct socket); ! 190: if (offset & 0x3) { ! 191: offset += 4; ! 192: offset &= 0xfffffffc; ! 193: } ! 194: (*so)->so_saved_pcb = offset; ! 195: offset += get_inpcb_str_size(); ! 196: if (offset & 0x3) { ! 197: offset += 4; ! 198: offset &= 0xfffffffc; ! 199: } ! 200: ! 201: ((struct inpcb *) (*so)->so_saved_pcb)->inp_saved_ppcb = offset; ! 202: #if TEMPDEBUG ! 203: kprintf("Allocating cached socket - %x, pcb=%x tcpcb=%x\n", *so, ! 204: (*so)->so_saved_pcb, ! 205: ((struct inpcb *)(*so)->so_saved_pcb)->inp_saved_ppcb); ! 206: #endif ! 207: } ! 208: ! 209: (*so)->cached_in_sock_layer = 1; ! 210: } ! 211: ! 212: ! 213: void cached_sock_free(so) ! 214: struct socket *so; ! 215: { ! 216: int s; ! 217: ! 218: ! 219: s = splnet(); ! 220: if (++cached_sock_count > MAX_CACHED_SOCKETS) { ! 221: --cached_sock_count; ! 222: splx(s); ! 223: #if TEMPDEBUG ! 224: kprintf("Freeing overflowed cached socket %x\n", so); ! 225: #endif ! 226: zfree(so_cache_zone, (vm_offset_t) so); ! 227: } ! 228: else { ! 229: #if TEMPDEBUG ! 230: kprintf("Freeing socket %x into cache\n", so); ! 231: #endif ! 232: if (so_cache_hw < cached_sock_count) ! 233: so_cache_hw = cached_sock_count; ! 234: ! 235: so->cache_next = socket_cache_head; ! 236: so->cache_prev = 0; ! 237: if (socket_cache_head) ! 238: socket_cache_head->cache_prev = so; ! 239: else ! 240: socket_cache_tail = so; ! 241: ! 242: so->cache_timestamp = so_cache_time; ! 243: socket_cache_head = so; ! 244: splx(s); ! 245: } ! 246: ! 247: #if TEMPDEBUG ! 248: kprintf("Freed cached sock %x into cache - count is %d\n", so, cached_sock_count); ! 249: #endif ! 250: ! 251: ! 252: } ! 253: ! 254: ! 255: void so_cache_timer() ! 256: { ! 257: register struct socket *p; ! 258: register int s; ! 259: register int n_freed = 0; ! 260: ! 261: ! 262: ++so_cache_time; ! 263: ! 264: s = splnet(); ! 265: ! 266: while (p = socket_cache_tail) ! 267: { ! 268: if ((so_cache_time - p->cache_timestamp) < SO_CACHE_TIME_LIMIT) ! 269: break; ! 270: ! 271: so_cache_timeouts++; ! 272: ! 273: if (socket_cache_tail = p->cache_prev) ! 274: p->cache_prev->cache_next = 0; ! 275: if (--cached_sock_count == 0) ! 276: socket_cache_head = 0; ! 277: ! 278: splx(s); ! 279: ! 280: zfree(so_cache_zone, (vm_offset_t) p); ! 281: ! 282: splnet(); ! 283: if (++n_freed >= SO_CACHE_MAX_FREE_BATCH) ! 284: { ! 285: so_cache_max_freed++; ! 286: break; ! 287: } ! 288: } ! 289: splx(s); ! 290: ! 291: timeout(so_cache_timer, NULL, (SO_CACHE_FLUSH_INTERVAL * hz)); ! 292: } ! 293: ! 294: ! 295: ! 296: int ! 297: socreate(dom, aso, type, proto) ! 298: int dom; ! 299: struct socket **aso; ! 300: register int type; ! 301: int proto; ! 302: { ! 303: struct proc *p = current_proc(); /* XXX */ ! 304: register struct protosw *prp; ! 305: register struct socket *so; ! 306: register int error; ! 307: ! 308: if (proto) ! 309: prp = pffindproto(dom, proto, type); ! 310: else ! 311: prp = pffindtype(dom, type); ! 312: if (prp == 0 || prp->pr_usrreq == 0) ! 313: return (EPROTONOSUPPORT); ! 314: if (prp->pr_type != type) ! 315: return (EPROTOTYPE); ! 316: ! 317: #ifdef SOCKET_CACHE_ON ! 318: if ((dom == PF_INET) && (type == SOCK_STREAM)) ! 319: cached_sock_alloc(&so); ! 320: else ! 321: #endif ! 322: { ! 323: MALLOC_ZONE(so, struct socket *, sizeof(*so), M_SOCKET, M_WAITOK); ! 324: bzero((caddr_t)so, sizeof(*so)); ! 325: } ! 326: ! 327: so->so_type = type; ! 328: if (p->p_ucred->cr_uid == 0) ! 329: so->so_state = SS_PRIV; ! 330: so->so_proto = prp; ! 331: error = ! 332: (*prp->pr_usrreq)(so, PRU_ATTACH, (struct mbuf *)0, ! 333: (struct mbuf *)(long)proto, (struct mbuf *)0); ! 334: if (error) { ! 335: #if TEMPDEBUG ! 336: kprintf("SOCREATE - error on PRU_ATTACH for socket %x\n", so); ! 337: #endif ! 338: so->so_state |= SS_NOFDREF; ! 339: sofree(so); ! 340: return (error); ! 341: } ! 342: so->so_rcv.sb_flags |= SB_RECV; ! 343: so->so_rcv.sb_so = so->so_snd.sb_so = so; ! 344: TAILQ_INIT(&so->so_evlist); ! 345: *aso = so; ! 346: return (0); ! 347: } ! 348: ! 349: int ! 350: sobind(so, nam) ! 351: struct socket *so; ! 352: struct mbuf *nam; ! 353: { ! 354: int s = splnet(); ! 355: int error; ! 356: ! 357: error = ! 358: (*so->so_proto->pr_usrreq)(so, PRU_BIND, ! 359: (struct mbuf *)0, nam, (struct mbuf *)0); ! 360: splx(s); ! 361: return (error); ! 362: } ! 363: ! 364: int ! 365: solisten(so, backlog) ! 366: register struct socket *so; ! 367: int backlog; ! 368: { ! 369: int s = splnet(), error; ! 370: ! 371: error = ! 372: (*so->so_proto->pr_usrreq)(so, PRU_LISTEN, ! 373: (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0); ! 374: if (error) { ! 375: splx(s); ! 376: return (error); ! 377: } ! 378: if (so->so_q == 0) ! 379: so->so_options |= SO_ACCEPTCONN; ! 380: if (backlog < 0) ! 381: backlog = 0; ! 382: so->so_qlimit = min(backlog, SOMAXCONN); ! 383: splx(s); ! 384: return (0); ! 385: } ! 386: ! 387: int ! 388: sofree(so) ! 389: register struct socket *so; ! 390: { ! 391: ! 392: if (so->so_pcb || (so->so_state & SS_NOFDREF) == 0) ! 393: return; ! 394: if (so->so_head) { ! 395: if (!soqremque(so, 0) && !soqremque(so, 1)) ! 396: panic("sofree dq"); ! 397: so->so_head = 0; ! 398: } ! 399: sbrelease(&so->so_snd); ! 400: sorflush(so); ! 401: ! 402: if (so->cached_in_sock_layer == 1) ! 403: cached_sock_free(so); ! 404: else ! 405: FREE_ZONE(so, sizeof *so, M_SOCKET); ! 406: } ! 407: ! 408: /* ! 409: * Close a socket on last file table reference removal. ! 410: * Initiate disconnect if connected. ! 411: * Free socket when disconnect complete. ! 412: */ ! 413: int ! 414: soclose(so) ! 415: register struct socket *so; ! 416: { ! 417: int s = splnet(); /* conservative */ ! 418: int error = 0; ! 419: ! 420: if (so->so_options & SO_ACCEPTCONN) { ! 421: while (so->so_q0) ! 422: (void) soabort(so->so_q0); ! 423: while (so->so_q) ! 424: (void) soabort(so->so_q); ! 425: } ! 426: if (so->so_pcb == 0) ! 427: goto discard; ! 428: if (so->so_state & SS_ISCONNECTED) { ! 429: if ((so->so_state & SS_ISDISCONNECTING) == 0) { ! 430: error = sodisconnect(so); ! 431: if (error) ! 432: goto drop; ! 433: } ! 434: if (so->so_options & SO_LINGER) { ! 435: if ((so->so_state & SS_ISDISCONNECTING) && ! 436: (so->so_state & SS_NBIO)) ! 437: goto drop; ! 438: while (so->so_state & SS_ISCONNECTED) ! 439: if (error = tsleep((caddr_t)&so->so_timeo, ! 440: PSOCK | PCATCH, netcls, so->so_linger)) ! 441: break; ! 442: } ! 443: } ! 444: drop: ! 445: if (so->so_pcb) { ! 446: int error2 = ! 447: (*so->so_proto->pr_usrreq)(so, PRU_DETACH, ! 448: (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0); ! 449: if (error == 0) ! 450: error = error2; ! 451: } ! 452: discard: ! 453: ! 454: if (so->so_state & SS_NOFDREF) ! 455: panic("soclose: NOFDREF"); ! 456: so->so_state |= SS_NOFDREF; ! 457: evsofree(so); ! 458: sofree(so); ! 459: splx(s); ! 460: return (error); ! 461: } ! 462: ! 463: /* ! 464: * Must be called at splnet... ! 465: */ ! 466: int ! 467: soabort(so) ! 468: struct socket *so; ! 469: { ! 470: ! 471: return ( ! 472: (*so->so_proto->pr_usrreq)(so, PRU_ABORT, ! 473: (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0)); ! 474: } ! 475: ! 476: int ! 477: soaccept(so, nam) ! 478: register struct socket *so; ! 479: struct mbuf *nam; ! 480: { ! 481: int s = splnet(); ! 482: int error; ! 483: ! 484: if ((so->so_state & SS_NOFDREF) == 0) ! 485: panic("soaccept: !NOFDREF"); ! 486: so->so_state &= ~SS_NOFDREF; ! 487: error = (*so->so_proto->pr_usrreq)(so, PRU_ACCEPT, ! 488: (struct mbuf *)0, nam, (struct mbuf *)0); ! 489: splx(s); ! 490: return (error); ! 491: } ! 492: ! 493: int ! 494: soconnect(so, nam) ! 495: register struct socket *so; ! 496: struct mbuf *nam; ! 497: { ! 498: int s; ! 499: int error; ! 500: ! 501: if (so->so_options & SO_ACCEPTCONN) ! 502: return (EOPNOTSUPP); ! 503: s = splnet(); ! 504: /* ! 505: * If protocol is connection-based, can only connect once. ! 506: * Otherwise, if connected, try to disconnect first. ! 507: * This allows user to disconnect by connecting to, e.g., ! 508: * a null address. ! 509: */ ! 510: if (so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING) && ! 511: ((so->so_proto->pr_flags & PR_CONNREQUIRED) || ! 512: (error = sodisconnect(so)))) ! 513: error = EISCONN; ! 514: else ! 515: error = (*so->so_proto->pr_usrreq)(so, PRU_CONNECT, ! 516: (struct mbuf *)0, nam, (struct mbuf *)0); ! 517: splx(s); ! 518: return (error); ! 519: } ! 520: ! 521: int ! 522: soconnect2(so1, so2) ! 523: register struct socket *so1; ! 524: struct socket *so2; ! 525: { ! 526: int s = splnet(); ! 527: int error; ! 528: ! 529: error = (*so1->so_proto->pr_usrreq)(so1, PRU_CONNECT2, ! 530: (struct mbuf *)0, (struct mbuf *)so2, (struct mbuf *)0); ! 531: splx(s); ! 532: return (error); ! 533: } ! 534: ! 535: int ! 536: sodisconnect(so) ! 537: register struct socket *so; ! 538: { ! 539: int s = splnet(); ! 540: int error; ! 541: ! 542: if ((so->so_state & SS_ISCONNECTED) == 0) { ! 543: error = ENOTCONN; ! 544: goto bad; ! 545: } ! 546: if (so->so_state & SS_ISDISCONNECTING) { ! 547: error = EALREADY; ! 548: goto bad; ! 549: } ! 550: error = (*so->so_proto->pr_usrreq)(so, PRU_DISCONNECT, ! 551: (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0); ! 552: bad: ! 553: splx(s); ! 554: return (error); ! 555: } ! 556: ! 557: #define SBLOCKWAIT(f) (((f) & MSG_DONTWAIT) ? M_DONTWAIT : M_WAIT) ! 558: /* ! 559: * Send on a socket. ! 560: * If send must go all at once and message is larger than ! 561: * send buffering, then hard error. ! 562: * Lock against other senders. ! 563: * If must go all at once and not enough room now, then ! 564: * inform user that this would block and do nothing. ! 565: * Otherwise, if nonblocking, send as much as possible. ! 566: * The data to be sent is described by "uio" if nonzero, ! 567: * otherwise by the mbuf chain "top" (which must be null ! 568: * if uio is not). Data provided in mbuf chain must be small ! 569: * enough to send all at once. ! 570: * ! 571: * Returns nonzero on error, timeout or signal; callers ! 572: * must check for short counts if EINTR/ERESTART are returned. ! 573: * Data and control buffers are freed on return. ! 574: */ ! 575: int ! 576: sosend(so, addr, uio, top, control, flags) ! 577: register struct socket *so; ! 578: struct mbuf *addr; ! 579: struct uio *uio; ! 580: struct mbuf *top; ! 581: struct mbuf *control; ! 582: int flags; ! 583: { ! 584: ! 585: ! 586: struct proc *p = current_proc(); /* XXX */ ! 587: struct mbuf **mp; ! 588: register struct mbuf *m; ! 589: register long space, len, resid; ! 590: int clen = 0, error, s, dontroute, mlen; ! 591: int atomic = sosendallatonce(so) || top; ! 592: ! 593: if (uio) ! 594: resid = uio->uio_resid; ! 595: else ! 596: resid = top->m_pkthdr.len; ! 597: ! 598: KERNEL_DEBUG(DBG_FNC_SOSEND | DBG_FUNC_START, ! 599: so, ! 600: resid, ! 601: so->so_snd.sb_cc, ! 602: so->so_snd.sb_lowat, ! 603: so->so_snd.sb_hiwat); ! 604: ! 605: /* ! 606: * In theory resid should be unsigned. ! 607: * However, space must be signed, as it might be less than 0 ! 608: * if we over-committed, and we must use a signed comparison ! 609: * of space and resid. On the other hand, a negative resid ! 610: * causes us to loop sending 0-length segments to the protocol. ! 611: */ ! 612: if (resid < 0) ! 613: { ! 614: KERNEL_DEBUG(DBG_FNC_SOSEND | DBG_FUNC_END, EINVAL,0,0,0,0); ! 615: return (EINVAL); ! 616: } ! 617: ! 618: dontroute = ! 619: (flags & MSG_DONTROUTE) && (so->so_options & SO_DONTROUTE) == 0 && ! 620: (so->so_proto->pr_flags & PR_ATOMIC); ! 621: p->p_stats->p_ru.ru_msgsnd++; ! 622: if (control) ! 623: clen = control->m_len; ! 624: #define snderr(errno) { error = errno; splx(s); goto release; } ! 625: ! 626: restart: ! 627: if (error = sblock(&so->so_snd, SBLOCKWAIT(flags))) ! 628: goto out; ! 629: do { ! 630: s = splnet(); ! 631: if (so->so_state & SS_CANTSENDMORE) ! 632: snderr(EPIPE); ! 633: if (so->so_error) ! 634: snderr(so->so_error); ! 635: if ((so->so_state & SS_ISCONNECTED) == 0) { ! 636: if (so->so_proto->pr_flags & PR_CONNREQUIRED) { ! 637: if ((so->so_state & SS_ISCONFIRMING) == 0 && ! 638: !(resid == 0 && clen != 0)) ! 639: snderr(ENOTCONN); ! 640: } else if (addr == 0) ! 641: snderr(EDESTADDRREQ); ! 642: } ! 643: space = sbspace(&so->so_snd); ! 644: if (flags & MSG_OOB) ! 645: space += 1024; ! 646: if (atomic && resid > so->so_snd.sb_hiwat || ! 647: clen > so->so_snd.sb_hiwat) ! 648: snderr(EMSGSIZE); ! 649: if (space < resid + clen && uio && ! 650: (atomic || space < so->so_snd.sb_lowat || space < clen)) { ! 651: if (so->so_state & SS_NBIO) ! 652: snderr(EWOULDBLOCK); ! 653: sbunlock(&so->so_snd); ! 654: error = sbwait(&so->so_snd); ! 655: splx(s); ! 656: if (error) ! 657: goto out; ! 658: goto restart; ! 659: } ! 660: splx(s); ! 661: mp = ⊤ ! 662: space -= clen; ! 663: do { ! 664: if (uio == NULL) { ! 665: /* ! 666: * Data is prepackaged in "top". ! 667: */ ! 668: resid = 0; ! 669: if (flags & MSG_EOR) ! 670: top->m_flags |= M_EOR; ! 671: } else do { ! 672: if (top == 0) { ! 673: MGETHDR(m, M_WAIT, MT_DATA); ! 674: mlen = MHLEN; ! 675: m->m_pkthdr.len = 0; ! 676: m->m_pkthdr.rcvif = (struct ifnet *)0; ! 677: } else { ! 678: MGET(m, M_WAIT, MT_DATA); ! 679: mlen = MLEN; ! 680: } ! 681: if (resid >= MINCLSIZE) { ! 682: MCLGET(m, M_WAIT); ! 683: if ((m->m_flags & M_EXT) == 0) ! 684: goto nopages; ! 685: mlen = MCLBYTES; ! 686: len = min(min(mlen, resid), space); ! 687: } else { ! 688: nopages: ! 689: len = min(min(mlen, resid), space); ! 690: /* ! 691: * For datagram protocols, leave room ! 692: * for protocol headers in first mbuf. ! 693: */ ! 694: if (atomic && top == 0 && len < mlen) ! 695: MH_ALIGN(m, len); ! 696: } ! 697: space -= len; ! 698: error = uiomove(mtod(m, caddr_t), (int)len, uio); ! 699: resid = uio->uio_resid; ! 700: ! 701: m->m_len = len; ! 702: *mp = m; ! 703: top->m_pkthdr.len += len; ! 704: if (error) ! 705: goto release; ! 706: mp = &m->m_next; ! 707: if (resid <= 0) { ! 708: if (flags & MSG_EOR) ! 709: top->m_flags |= M_EOR; ! 710: break; ! 711: } ! 712: } while (space > 0 && (atomic || resid < MINCLSIZE)); ! 713: ! 714: if (dontroute) ! 715: so->so_options |= SO_DONTROUTE; ! 716: if (resid > 0) ! 717: so->so_state |= SS_MORETOCOME; ! 718: s = splnet(); /* XXX */ ! 719: error = (*so->so_proto->pr_usrreq)(so, ! 720: (flags & MSG_OOB) ? PRU_SENDOOB : PRU_SEND, ! 721: top, addr, control); ! 722: splx(s); ! 723: if (dontroute) ! 724: so->so_options &= ~SO_DONTROUTE; ! 725: so->so_state &= ~SS_MORETOCOME; ! 726: clen = 0; ! 727: control = 0; ! 728: top = 0; ! 729: mp = ⊤ ! 730: if (error) ! 731: goto release; ! 732: } while (resid && space > 0); ! 733: } while (resid); ! 734: ! 735: release: ! 736: sbunlock(&so->so_snd); ! 737: out: ! 738: if (top) ! 739: m_freem(top); ! 740: if (control) ! 741: m_freem(control); ! 742: ! 743: KERNEL_DEBUG(DBG_FNC_SOSEND | DBG_FUNC_END, ! 744: so, ! 745: resid, ! 746: so->so_snd.sb_cc, ! 747: space, ! 748: error); ! 749: ! 750: return (error); ! 751: } ! 752: ! 753: /* ! 754: * Implement receive operations on a socket. ! 755: * We depend on the way that records are added to the sockbuf ! 756: * by sbappend*. In particular, each record (mbufs linked through m_next) ! 757: * must begin with an address if the protocol so specifies, ! 758: * followed by an optional mbuf or mbufs containing ancillary data, ! 759: * and then zero or more mbufs of data. ! 760: * In order to avoid blocking network interrupts for the entire time here, ! 761: * we splx() while doing the actual copy to user space. ! 762: * Although the sockbuf is locked, new data may still be appended, ! 763: * and thus we must maintain consistency of the sockbuf during that time. ! 764: * ! 765: * The caller may receive the data as a single mbuf chain by supplying ! 766: * an mbuf **mp0 for use in returning the chain. The uio is then used ! 767: * only for the count in uio_resid. ! 768: */ ! 769: int ! 770: soreceive(so, paddr, uio, mp0, controlp, flagsp) ! 771: register struct socket *so; ! 772: struct mbuf **paddr; ! 773: struct uio *uio; ! 774: struct mbuf **mp0; ! 775: struct mbuf **controlp; ! 776: int *flagsp; ! 777: { ! 778: register struct mbuf *m, **mp; ! 779: register int flags, len, error, s, offset; ! 780: struct protosw *pr = so->so_proto; ! 781: struct mbuf *nextrecord; ! 782: int moff, type; ! 783: int orig_resid = uio->uio_resid; ! 784: ! 785: ! 786: KERNEL_DEBUG(DBG_FNC_SORECEIVE | DBG_FUNC_START, ! 787: so, ! 788: uio->uio_resid, ! 789: so->so_rcv.sb_cc, ! 790: so->so_rcv.sb_lowat, ! 791: so->so_rcv.sb_hiwat); ! 792: mp = mp0; ! 793: if (paddr) ! 794: *paddr = 0; ! 795: if (controlp) ! 796: *controlp = 0; ! 797: if (flagsp) ! 798: flags = *flagsp &~ MSG_EOR; ! 799: else ! 800: flags = 0; ! 801: if (flags & MSG_OOB) { ! 802: m = m_get(M_WAIT, MT_DATA); ! 803: error = (*pr->pr_usrreq)(so, PRU_RCVOOB, m, ! 804: (struct mbuf *)(long)(flags & MSG_PEEK), (struct mbuf *)0); ! 805: if (error) ! 806: goto bad; ! 807: do { ! 808: error = uiomove(mtod(m, caddr_t), ! 809: (int) min(uio->uio_resid, m->m_len), uio); ! 810: m = m_free(m); ! 811: } while (uio->uio_resid && error == 0 && m); ! 812: bad: ! 813: if (m) ! 814: m_freem(m); ! 815: ! 816: KERNEL_DEBUG(DBG_FNC_SORECEIVE | DBG_FUNC_END, error,0,0,0,0); ! 817: return (error); ! 818: } ! 819: if (mp) ! 820: *mp = (struct mbuf *)0; ! 821: if (so->so_state & SS_ISCONFIRMING && uio->uio_resid) ! 822: (*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0, ! 823: (struct mbuf *)0, (struct mbuf *)0); ! 824: ! 825: restart: ! 826: if (error = sblock(&so->so_rcv, SBLOCKWAIT(flags))) ! 827: { ! 828: KERNEL_DEBUG(DBG_FNC_SORECEIVE | DBG_FUNC_END, error,0,0,0,0); ! 829: return (error); ! 830: } ! 831: s = splnet(); ! 832: ! 833: m = so->so_rcv.sb_mb; ! 834: /* ! 835: * If we have less data than requested, block awaiting more ! 836: * (subject to any timeout) if: ! 837: * 1. the current count is less than the low water mark, ! 838: * 2. MSG_WAITALL is set, and it is possible to do the entire ! 839: * receive operation at once if we block (resid <= hiwat), or ! 840: * 3. MSG_DONTWAIT is not set. ! 841: * If MSG_WAITALL is set but resid is larger than the receive buffer, ! 842: * we have to do the receive in sections, and thus risk returning ! 843: * a short count if a timeout or signal occurs after we start. ! 844: */ ! 845: if (m == 0 || ((flags & MSG_DONTWAIT) == 0 && ! 846: so->so_rcv.sb_cc < uio->uio_resid) && ! 847: (so->so_rcv.sb_cc < so->so_rcv.sb_lowat || ! 848: ((flags & MSG_WAITALL) && uio->uio_resid <= so->so_rcv.sb_hiwat)) && ! 849: m->m_nextpkt == 0 && (pr->pr_flags & PR_ATOMIC) == 0) { ! 850: #if DIAGNOSTIC ! 851: if (m == 0 && so->so_rcv.sb_cc) ! 852: panic("receive 1"); ! 853: #endif ! 854: if (so->so_error) { ! 855: if (m) ! 856: goto dontblock; ! 857: error = so->so_error; ! 858: if ((flags & MSG_PEEK) == 0) ! 859: so->so_error = 0; ! 860: goto release; ! 861: } ! 862: if (so->so_state & SS_CANTRCVMORE) { ! 863: if (m) ! 864: goto dontblock; ! 865: else ! 866: goto release; ! 867: } ! 868: for (; m; m = m->m_next) ! 869: if (m->m_type == MT_OOBDATA || (m->m_flags & M_EOR)) { ! 870: m = so->so_rcv.sb_mb; ! 871: goto dontblock; ! 872: } ! 873: if ((so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) == 0 && ! 874: (so->so_proto->pr_flags & PR_CONNREQUIRED)) { ! 875: error = ENOTCONN; ! 876: goto release; ! 877: } ! 878: if (uio->uio_resid == 0) ! 879: goto release; ! 880: if ((so->so_state & SS_NBIO) || (flags & MSG_DONTWAIT)) { ! 881: error = EWOULDBLOCK; ! 882: goto release; ! 883: } ! 884: sbunlock(&so->so_rcv); ! 885: error = sbwait(&so->so_rcv); ! 886: splx(s); ! 887: if (error) ! 888: { ! 889: KERNEL_DEBUG(DBG_FNC_SORECEIVE | DBG_FUNC_END, error,0,0,0,0); ! 890: return (error); ! 891: } ! 892: goto restart; ! 893: } ! 894: dontblock: ! 895: #ifdef notyet /* XXXX */ ! 896: if (uio->uio_procp) ! 897: uio->uio_procp->p_stats->p_ru.ru_msgrcv++; ! 898: #endif ! 899: nextrecord = m->m_nextpkt; ! 900: if (pr->pr_flags & PR_ADDR) { ! 901: #if DIAGNOSTIC ! 902: if (m->m_type != MT_SONAME) ! 903: panic("receive 1a"); ! 904: #endif ! 905: orig_resid = 0; ! 906: if (flags & MSG_PEEK) { ! 907: if (paddr) ! 908: *paddr = m_copy(m, 0, m->m_len); ! 909: m = m->m_next; ! 910: } else { ! 911: sbfree(&so->so_rcv, m); ! 912: if (paddr) { ! 913: *paddr = m; ! 914: so->so_rcv.sb_mb = m->m_next; ! 915: m->m_next = 0; ! 916: m = so->so_rcv.sb_mb; ! 917: } else { ! 918: MFREE(m, so->so_rcv.sb_mb); ! 919: m = so->so_rcv.sb_mb; ! 920: } ! 921: } ! 922: } ! 923: while (m && m->m_type == MT_CONTROL && error == 0) { ! 924: if (flags & MSG_PEEK) { ! 925: if (controlp) ! 926: *controlp = m_copy(m, 0, m->m_len); ! 927: m = m->m_next; ! 928: } else { ! 929: sbfree(&so->so_rcv, m); ! 930: if (controlp) { ! 931: if (pr->pr_domain->dom_externalize && ! 932: mtod(m, struct cmsghdr *)->cmsg_type == ! 933: SCM_RIGHTS) ! 934: error = (*pr->pr_domain->dom_externalize)(m); ! 935: *controlp = m; ! 936: so->so_rcv.sb_mb = m->m_next; ! 937: m->m_next = 0; ! 938: m = so->so_rcv.sb_mb; ! 939: } else { ! 940: MFREE(m, so->so_rcv.sb_mb); ! 941: m = so->so_rcv.sb_mb; ! 942: } ! 943: } ! 944: if (controlp) { ! 945: orig_resid = 0; ! 946: controlp = &(*controlp)->m_next; ! 947: } ! 948: } ! 949: if (m) { ! 950: if ((flags & MSG_PEEK) == 0) ! 951: m->m_nextpkt = nextrecord; ! 952: type = m->m_type; ! 953: if (type == MT_OOBDATA) ! 954: flags |= MSG_OOB; ! 955: } ! 956: moff = 0; ! 957: offset = 0; ! 958: while (m && uio->uio_resid > 0 && error == 0) { ! 959: if (m->m_type == MT_OOBDATA) { ! 960: if (type != MT_OOBDATA) ! 961: break; ! 962: } else if (type == MT_OOBDATA) ! 963: break; ! 964: #if 0 ! 965: /* ! 966: * This assertion needs rework. The trouble is Appletalk is uses many ! 967: * mbuf types (NOT listed in mbuf.h!) which will trigger this panic. ! 968: * For now just remove the assertion... CSM 9/98 ! 969: */ ! 970: #if DIAGNOSTIC ! 971: else if (m->m_type != MT_DATA && m->m_type != MT_HEADER) ! 972: panic("receive 3"); ! 973: #endif ! 974: #endif ! 975: so->so_state &= ~SS_RCVATMARK; ! 976: len = uio->uio_resid; ! 977: if (so->so_oobmark && len > so->so_oobmark - offset) ! 978: len = so->so_oobmark - offset; ! 979: if (len > m->m_len - moff) ! 980: len = m->m_len - moff; ! 981: /* ! 982: * If mp is set, just pass back the mbufs. ! 983: * Otherwise copy them out via the uio, then free. ! 984: * Sockbuf must be consistent here (points to current mbuf, ! 985: * it points to next record) when we drop priority; ! 986: * we must note any additions to the sockbuf when we ! 987: * block interrupts again. ! 988: */ ! 989: if (mp == 0) { ! 990: splx(s); ! 991: error = uiomove(mtod(m, caddr_t) + moff, (int)len, uio); ! 992: s = splnet(); ! 993: } else ! 994: uio->uio_resid -= len; ! 995: if (len == m->m_len - moff) { ! 996: if (m->m_flags & M_EOR) ! 997: flags |= MSG_EOR; ! 998: if (flags & MSG_PEEK) { ! 999: m = m->m_next; ! 1000: moff = 0; ! 1001: } else { ! 1002: nextrecord = m->m_nextpkt; ! 1003: sbfree(&so->so_rcv, m); ! 1004: if (mp) { ! 1005: *mp = m; ! 1006: mp = &m->m_next; ! 1007: so->so_rcv.sb_mb = m = m->m_next; ! 1008: *mp = (struct mbuf *)0; ! 1009: } else { ! 1010: MFREE(m, so->so_rcv.sb_mb); ! 1011: m = so->so_rcv.sb_mb; ! 1012: } ! 1013: if (m) ! 1014: m->m_nextpkt = nextrecord; ! 1015: } ! 1016: } else { ! 1017: if (flags & MSG_PEEK) ! 1018: moff += len; ! 1019: else { ! 1020: if (mp) ! 1021: *mp = m_copym(m, 0, len, M_WAIT); ! 1022: m->m_data += len; ! 1023: m->m_len -= len; ! 1024: so->so_rcv.sb_cc -= len; ! 1025: } ! 1026: } ! 1027: if (so->so_oobmark) { ! 1028: if ((flags & MSG_PEEK) == 0) { ! 1029: so->so_oobmark -= len; ! 1030: if (so->so_oobmark == 0) { ! 1031: so->so_state |= SS_RCVATMARK; ! 1032: postevent(so, 0, EV_OOB); ! 1033: break; ! 1034: } ! 1035: } else { ! 1036: offset += len; ! 1037: if (offset == so->so_oobmark) ! 1038: break; ! 1039: } ! 1040: } ! 1041: if (flags & MSG_EOR) ! 1042: break; ! 1043: /* ! 1044: * If the MSG_WAITALL flag is set (for non-atomic socket), ! 1045: * we must not quit until "uio->uio_resid == 0" or an error ! 1046: * termination. If a signal/timeout occurs, return ! 1047: * with a short count but without error. ! 1048: * Keep sockbuf locked against other readers. ! 1049: */ ! 1050: while (flags & MSG_WAITALL && m == 0 && uio->uio_resid > 0 && ! 1051: !sosendallatonce(so) && !nextrecord) { ! 1052: if (so->so_error || so->so_state & SS_CANTRCVMORE) ! 1053: break; ! 1054: error = sbwait(&so->so_rcv); ! 1055: if (error) { ! 1056: sbunlock(&so->so_rcv); ! 1057: splx(s); ! 1058: KERNEL_DEBUG(DBG_FNC_SORECEIVE | DBG_FUNC_END, 0,0,0,0,0); ! 1059: return (0); ! 1060: } ! 1061: if (m = so->so_rcv.sb_mb) ! 1062: nextrecord = m->m_nextpkt; ! 1063: } ! 1064: } ! 1065: ! 1066: if (m && pr->pr_flags & PR_ATOMIC) { ! 1067: flags |= MSG_TRUNC; ! 1068: if ((flags & MSG_PEEK) == 0) ! 1069: (void) sbdroprecord(&so->so_rcv); ! 1070: } ! 1071: if ((flags & MSG_PEEK) == 0) { ! 1072: if (m == 0) ! 1073: so->so_rcv.sb_mb = nextrecord; ! 1074: if (pr->pr_flags & PR_WANTRCVD && so->so_pcb) ! 1075: (*pr->pr_usrreq)(so, PRU_RCVD, (struct mbuf *)0, ! 1076: (struct mbuf *)(long)flags, (struct mbuf *)0, ! 1077: (struct mbuf *)0); ! 1078: } ! 1079: if (orig_resid == uio->uio_resid && orig_resid && ! 1080: (flags & MSG_EOR) == 0 && (so->so_state & SS_CANTRCVMORE) == 0) { ! 1081: sbunlock(&so->so_rcv); ! 1082: splx(s); ! 1083: goto restart; ! 1084: } ! 1085: ! 1086: if (flagsp) ! 1087: *flagsp |= flags; ! 1088: release: ! 1089: sbunlock(&so->so_rcv); ! 1090: splx(s); ! 1091: ! 1092: KERNEL_DEBUG(DBG_FNC_SORECEIVE | DBG_FUNC_END, ! 1093: so, ! 1094: uio->uio_resid, ! 1095: so->so_rcv.sb_cc, ! 1096: 0, ! 1097: error); ! 1098: ! 1099: return (error); ! 1100: } ! 1101: ! 1102: int ! 1103: soshutdown(so, how) ! 1104: register struct socket *so; ! 1105: register int how; ! 1106: { ! 1107: register struct protosw *pr = so->so_proto; ! 1108: ! 1109: how++; ! 1110: if (how & FREAD) { ! 1111: sorflush(so); ! 1112: postevent(so, 0, EV_RCLOSED); ! 1113: } ! 1114: if (how & FWRITE) { ! 1115: int ret = ((*pr->pr_usrreq)(so, PRU_SHUTDOWN, ! 1116: (struct mbuf *)0, (struct mbuf *)0, (struct mbuf *)0)); ! 1117: postevent(so, 0, EV_WCLOSED); ! 1118: return(ret); ! 1119: } ! 1120: return (0); ! 1121: } ! 1122: ! 1123: void ! 1124: sorflush(so) ! 1125: register struct socket *so; ! 1126: { ! 1127: register struct sockbuf *sb = &so->so_rcv; ! 1128: register struct protosw *pr = so->so_proto; ! 1129: register int s; ! 1130: struct sockbuf asb; ! 1131: ! 1132: sb->sb_flags |= SB_NOINTR; ! 1133: (void) sblock(sb, M_WAIT); ! 1134: s = splimp(); ! 1135: socantrcvmore(so); ! 1136: sbunlock(sb); ! 1137: asb = *sb; ! 1138: bzero((caddr_t)sb, sizeof (*sb)); ! 1139: splx(s); ! 1140: if (pr->pr_flags & PR_RIGHTS && pr->pr_domain->dom_dispose) ! 1141: (*pr->pr_domain->dom_dispose)(asb.sb_mb); ! 1142: sbrelease(&asb); ! 1143: } ! 1144: ! 1145: int ! 1146: sosetopt(so, level, optname, m0) ! 1147: register struct socket *so; ! 1148: int level, optname; ! 1149: struct mbuf *m0; ! 1150: { ! 1151: int error = 0; ! 1152: register struct mbuf *m = m0; ! 1153: ! 1154: if (level != SOL_SOCKET) { ! 1155: if (so->so_proto && so->so_proto->pr_ctloutput) ! 1156: return ((*so->so_proto->pr_ctloutput) ! 1157: (PRCO_SETOPT, so, level, optname, &m0)); ! 1158: error = ENOPROTOOPT; ! 1159: } else { ! 1160: switch (optname) { ! 1161: ! 1162: case SO_LINGER: ! 1163: if (m == NULL || m->m_len != sizeof (struct linger)) { ! 1164: error = EINVAL; ! 1165: goto bad; ! 1166: } ! 1167: so->so_linger = mtod(m, struct linger *)->l_linger; ! 1168: /* fall thru... */ ! 1169: ! 1170: case SO_DEBUG: ! 1171: case SO_KEEPALIVE: ! 1172: case SO_DONTROUTE: ! 1173: case SO_USELOOPBACK: ! 1174: case SO_BROADCAST: ! 1175: case SO_REUSEADDR: ! 1176: case SO_REUSEPORT: ! 1177: case SO_OOBINLINE: ! 1178: case SO_RCVIF: ! 1179: if (m == NULL || m->m_len < sizeof (int)) { ! 1180: error = EINVAL; ! 1181: goto bad; ! 1182: } ! 1183: if (*mtod(m, int *)) ! 1184: so->so_options |= optname; ! 1185: else ! 1186: so->so_options &= ~optname; ! 1187: break; ! 1188: ! 1189: case SO_SNDBUF: ! 1190: case SO_RCVBUF: ! 1191: case SO_SNDLOWAT: ! 1192: case SO_RCVLOWAT: ! 1193: if (m == NULL || m->m_len < sizeof (int)) { ! 1194: error = EINVAL; ! 1195: goto bad; ! 1196: } ! 1197: switch (optname) { ! 1198: ! 1199: case SO_SNDBUF: ! 1200: case SO_RCVBUF: ! 1201: if (sbreserve(optname == SO_SNDBUF ? ! 1202: &so->so_snd : &so->so_rcv, ! 1203: (u_long) *mtod(m, int *)) == 0) { ! 1204: error = ENOBUFS; ! 1205: goto bad; ! 1206: } ! 1207: break; ! 1208: ! 1209: case SO_SNDLOWAT: ! 1210: so->so_snd.sb_lowat = *mtod(m, int *); ! 1211: break; ! 1212: case SO_RCVLOWAT: ! 1213: so->so_rcv.sb_lowat = *mtod(m, int *); ! 1214: break; ! 1215: } ! 1216: break; ! 1217: ! 1218: case SO_SNDTIMEO: ! 1219: case SO_RCVTIMEO: ! 1220: { ! 1221: struct timeval *tv; ! 1222: short val; ! 1223: ! 1224: if (m == NULL || m->m_len < sizeof (*tv)) { ! 1225: error = EINVAL; ! 1226: goto bad; ! 1227: } ! 1228: tv = mtod(m, struct timeval *); ! 1229: #define MAX_TICKS_PER_SHORT_IN_SEC ((SHRT_MAX - hz) / hz) ! 1230: if (tv->tv_sec > MAX_TICKS_PER_SHORT_IN_SEC) { ! 1231: /* was (SHRT_MAX / hz - hz) */ ! 1232: error = EDOM; ! 1233: goto bad; ! 1234: } ! 1235: val = tv->tv_sec * hz + tv->tv_usec / tick; ! 1236: ! 1237: switch (optname) { ! 1238: ! 1239: case SO_SNDTIMEO: ! 1240: so->so_snd.sb_timeo = val; ! 1241: break; ! 1242: case SO_RCVTIMEO: ! 1243: so->so_rcv.sb_timeo = val; ! 1244: break; ! 1245: } ! 1246: break; ! 1247: } ! 1248: ! 1249: default: ! 1250: error = ENOPROTOOPT; ! 1251: break; ! 1252: } ! 1253: if (error == 0 && so->so_proto && so->so_proto->pr_ctloutput) { ! 1254: (void) ((*so->so_proto->pr_ctloutput) ! 1255: (PRCO_SETOPT, so, level, optname, &m0)); ! 1256: m = NULL; /* freed by protocol */ ! 1257: } ! 1258: } ! 1259: bad: ! 1260: if (m) ! 1261: (void) m_free(m); ! 1262: return (error); ! 1263: } ! 1264: ! 1265: int ! 1266: sogetopt(so, level, optname, mp) ! 1267: register struct socket *so; ! 1268: int level, optname; ! 1269: struct mbuf **mp; ! 1270: { ! 1271: register struct mbuf *m; ! 1272: ! 1273: if (level != SOL_SOCKET) { ! 1274: if (so->so_proto && so->so_proto->pr_ctloutput) { ! 1275: return ((*so->so_proto->pr_ctloutput) ! 1276: (PRCO_GETOPT, so, level, optname, mp)); ! 1277: } else ! 1278: return (ENOPROTOOPT); ! 1279: } else { ! 1280: m = m_get(M_WAIT, MT_SOOPTS); ! 1281: m->m_len = sizeof (int); ! 1282: ! 1283: switch (optname) { ! 1284: ! 1285: case SO_LINGER: ! 1286: m->m_len = sizeof (struct linger); ! 1287: mtod(m, struct linger *)->l_onoff = ! 1288: so->so_options & SO_LINGER; ! 1289: mtod(m, struct linger *)->l_linger = so->so_linger; ! 1290: break; ! 1291: ! 1292: case SO_USELOOPBACK: ! 1293: case SO_DONTROUTE: ! 1294: case SO_DEBUG: ! 1295: case SO_KEEPALIVE: ! 1296: case SO_REUSEADDR: ! 1297: case SO_REUSEPORT: ! 1298: case SO_BROADCAST: ! 1299: case SO_OOBINLINE: ! 1300: *mtod(m, int *) = so->so_options & optname; ! 1301: break; ! 1302: ! 1303: case SO_TYPE: ! 1304: *mtod(m, int *) = so->so_type; ! 1305: break; ! 1306: ! 1307: case SO_ERROR: ! 1308: *mtod(m, int *) = so->so_error; ! 1309: so->so_error = 0; ! 1310: break; ! 1311: ! 1312: case SO_SNDBUF: ! 1313: *mtod(m, int *) = so->so_snd.sb_hiwat; ! 1314: break; ! 1315: ! 1316: case SO_RCVBUF: ! 1317: *mtod(m, int *) = so->so_rcv.sb_hiwat; ! 1318: break; ! 1319: ! 1320: case SO_SNDLOWAT: ! 1321: *mtod(m, int *) = so->so_snd.sb_lowat; ! 1322: break; ! 1323: ! 1324: case SO_RCVLOWAT: ! 1325: *mtod(m, int *) = so->so_rcv.sb_lowat; ! 1326: break; ! 1327: ! 1328: case SO_SNDTIMEO: ! 1329: case SO_RCVTIMEO: ! 1330: { ! 1331: int val = (optname == SO_SNDTIMEO ? ! 1332: so->so_snd.sb_timeo : so->so_rcv.sb_timeo); ! 1333: ! 1334: m->m_len = sizeof(struct timeval); ! 1335: mtod(m, struct timeval *)->tv_sec = val / hz; ! 1336: mtod(m, struct timeval *)->tv_usec = ! 1337: (val % hz) / tick; ! 1338: break; ! 1339: } ! 1340: ! 1341: default: ! 1342: (void)m_free(m); ! 1343: return (ENOPROTOOPT); ! 1344: } ! 1345: *mp = m; ! 1346: return (0); ! 1347: } ! 1348: } ! 1349: ! 1350: void ! 1351: sohasoutofband(so) ! 1352: register struct socket *so; ! 1353: { ! 1354: struct proc *p; ! 1355: ! 1356: if (so->so_pgid < 0) ! 1357: gsignal(-so->so_pgid, SIGURG); ! 1358: else if (so->so_pgid > 0 && (p = pfind(so->so_pgid)) != 0) ! 1359: psignal(p, SIGURG); ! 1360: selwakeup(&so->so_rcv.sb_sel); ! 1361: }
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