thr_syscalls.c revision 144518
1/* 2 * Copyright (C) 2005 David Xu <davidxu@freebsd.org>. 3 * Copyright (c) 2003 Daniel Eischen <deischen@freebsd.org>. 4 * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice(s), this list of conditions and the following disclaimer as 12 * the first lines of this file unmodified other than the possible 13 * addition of one or more copyright notices. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice(s), this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY 20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 26 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 28 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 29 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $FreeBSD: head/lib/libthr/thread/thr_syscalls.c 144518 2005-04-02 01:20:00Z davidxu $ 32 */ 33 34/* 35 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by John Birrell. 49 * 4. Neither the name of the author nor the names of any co-contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 */ 66 67#include <sys/types.h> 68#include <sys/mman.h> 69#include <sys/param.h> 70#include <sys/select.h> 71#include <sys/signalvar.h> 72#include <sys/socket.h> 73#include <sys/stat.h> 74#include <sys/time.h> 75#include <sys/uio.h> 76#include <sys/wait.h> 77#include <aio.h> 78#include <dirent.h> 79#include <errno.h> 80#include <fcntl.h> 81#include <poll.h> 82#include <signal.h> 83#include <stdarg.h> 84#include <stdio.h> 85#include <stdlib.h> 86#include <string.h> 87#include <termios.h> 88#include <unistd.h> 89#include <pthread.h> 90 91#include "thr_private.h" 92 93extern int __creat(const char *, mode_t); 94extern int __pause(void); 95extern int __pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 96 const struct timespec *timo, const sigset_t *mask); 97extern unsigned int __sleep(unsigned int); 98extern int __system(const char *); 99extern int __tcdrain(int); 100extern pid_t __wait(int *); 101extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 102extern pid_t __waitpid(pid_t, int *, int); 103 104__weak_reference(__accept, accept); 105int 106__accept(int s, struct sockaddr *addr, socklen_t *addrlen) 107{ 108 struct pthread *curthread; 109 int oldcancel; 110 int ret; 111 112 curthread = _get_curthread(); 113 oldcancel = _thr_cancel_enter(curthread); 114 ret = __sys_accept(s, addr, addrlen); 115 _thr_cancel_leave(curthread, oldcancel); 116 117 return (ret); 118} 119 120__weak_reference(_aio_suspend, aio_suspend); 121 122int 123_aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 124 timespec *timeout) 125{ 126 struct pthread *curthread = _get_curthread(); 127 int oldcancel; 128 int ret; 129 130 oldcancel = _thr_cancel_enter(curthread); 131 ret = __sys_aio_suspend(iocbs, niocb, timeout); 132 _thr_cancel_leave(curthread, oldcancel); 133 134 return (ret); 135} 136 137__weak_reference(__close, close); 138 139int 140__close(int fd) 141{ 142 struct pthread *curthread = _get_curthread(); 143 int oldcancel; 144 int ret; 145 146 oldcancel = _thr_cancel_enter(curthread); 147 ret = __sys_close(fd); 148 _thr_cancel_leave(curthread, oldcancel); 149 150 return (ret); 151} 152 153__weak_reference(__connect, connect); 154 155int 156__connect(int fd, const struct sockaddr *name, socklen_t namelen) 157{ 158 struct pthread *curthread = _get_curthread(); 159 int oldcancel; 160 int ret; 161 162 curthread = _get_curthread(); 163 oldcancel = _thr_cancel_enter(curthread); 164 ret = __sys_connect(fd, name, namelen); 165 _thr_cancel_leave(curthread, oldcancel); 166 167 return (ret); 168} 169 170__weak_reference(___creat, creat); 171 172int 173___creat(const char *path, mode_t mode) 174{ 175 struct pthread *curthread = _get_curthread(); 176 int oldcancel; 177 int ret; 178 179 oldcancel = _thr_cancel_enter(curthread); 180 ret = __creat(path, mode); 181 _thr_cancel_leave(curthread, oldcancel); 182 183 return ret; 184} 185 186__weak_reference(__fcntl, fcntl); 187 188int 189__fcntl(int fd, int cmd,...) 190{ 191 struct pthread *curthread = _get_curthread(); 192 int oldcancel; 193 int ret; 194 va_list ap; 195 196 oldcancel = _thr_cancel_enter(curthread); 197 198 va_start(ap, cmd); 199 switch (cmd) { 200 case F_DUPFD: 201 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 202 break; 203 case F_SETFD: 204 case F_SETFL: 205 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 206 break; 207 case F_GETFD: 208 case F_GETFL: 209 ret = __sys_fcntl(fd, cmd); 210 break; 211 default: 212 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 213 } 214 va_end(ap); 215 216 _thr_cancel_leave(curthread, oldcancel); 217 218 return (ret); 219} 220 221__weak_reference(__fsync, fsync); 222 223int 224__fsync(int fd) 225{ 226 struct pthread *curthread = _get_curthread(); 227 int oldcancel; 228 int ret; 229 230 oldcancel = _thr_cancel_enter(curthread); 231 ret = __sys_fsync(fd); 232 _thr_cancel_leave(curthread, oldcancel); 233 234 return (ret); 235} 236 237__weak_reference(__msync, msync); 238 239int 240__msync(void *addr, size_t len, int flags) 241{ 242 struct pthread *curthread = _get_curthread(); 243 int oldcancel; 244 int ret; 245 246 oldcancel = _thr_cancel_enter(curthread); 247 ret = __sys_msync(addr, len, flags); 248 _thr_cancel_leave(curthread, oldcancel); 249 250 return ret; 251} 252 253__weak_reference(__nanosleep, nanosleep); 254 255int 256__nanosleep(const struct timespec *time_to_sleep, 257 struct timespec *time_remaining) 258{ 259 struct pthread *curthread = _get_curthread(); 260 int oldcancel; 261 int ret; 262 263 oldcancel = _thr_cancel_enter(curthread); 264 ret = __sys_nanosleep(time_to_sleep, time_remaining); 265 _thr_cancel_leave(curthread, oldcancel); 266 267 return (ret); 268} 269 270__weak_reference(__open, open); 271 272int 273__open(const char *path, int flags,...) 274{ 275 struct pthread *curthread = _get_curthread(); 276 int oldcancel; 277 int ret; 278 int mode = 0; 279 va_list ap; 280 281 oldcancel = _thr_cancel_enter(curthread); 282 283 /* Check if the file is being created: */ 284 if (flags & O_CREAT) { 285 /* Get the creation mode: */ 286 va_start(ap, flags); 287 mode = va_arg(ap, int); 288 va_end(ap); 289 } 290 291 ret = __sys_open(path, flags, mode); 292 293 _thr_cancel_leave(curthread, oldcancel); 294 295 return ret; 296} 297 298__weak_reference(_pause, pause); 299 300int 301_pause(void) 302{ 303 struct pthread *curthread = _get_curthread(); 304 int oldcancel; 305 int ret; 306 307 oldcancel = _thr_cancel_enter(curthread); 308 ret = __pause(); 309 _thr_cancel_leave(curthread, oldcancel); 310 311 return ret; 312} 313 314__weak_reference(__poll, poll); 315 316int 317__poll(struct pollfd *fds, unsigned int nfds, int timeout) 318{ 319 struct pthread *curthread = _get_curthread(); 320 int oldcancel; 321 int ret; 322 323 oldcancel = _thr_cancel_enter(curthread); 324 ret = __sys_poll(fds, nfds, timeout); 325 _thr_cancel_leave(curthread, oldcancel); 326 327 return ret; 328} 329 330__weak_reference(_pselect, pselect); 331 332int 333_pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 334 const struct timespec *timo, const sigset_t *mask) 335{ 336 struct pthread *curthread = _get_curthread(); 337 int oldcancel; 338 int ret; 339 340 oldcancel = _thr_cancel_enter(curthread); 341 ret = __pselect(count, rfds, wfds, efds, timo, mask); 342 _thr_cancel_leave(curthread, oldcancel); 343 344 return (ret); 345} 346 347__weak_reference(_raise, raise); 348 349int 350_raise(int sig) 351{ 352 int ret; 353 354 if (!_thr_isthreaded()) 355 ret = kill(getpid(), sig); 356 else { 357 ret = pthread_kill(pthread_self(), sig); 358 if (ret != 0) { 359 errno = ret; 360 ret = -1; 361 } 362 } 363 return (ret); 364} 365 366__weak_reference(__read, read); 367 368ssize_t 369__read(int fd, void *buf, size_t nbytes) 370{ 371 struct pthread *curthread = _get_curthread(); 372 int oldcancel; 373 ssize_t ret; 374 375 oldcancel = _thr_cancel_enter(curthread); 376 ret = __sys_read(fd, buf, nbytes); 377 _thr_cancel_leave(curthread, oldcancel); 378 379 return ret; 380} 381 382__weak_reference(__readv, readv); 383 384ssize_t 385__readv(int fd, const struct iovec *iov, int iovcnt) 386{ 387 struct pthread *curthread = _get_curthread(); 388 int oldcancel; 389 ssize_t ret; 390 391 oldcancel = _thr_cancel_enter(curthread); 392 ret = __sys_readv(fd, iov, iovcnt); 393 _thr_cancel_leave(curthread, oldcancel); 394 395 return ret; 396} 397 398__weak_reference(__recvfrom, recvfrom); 399 400ssize_t 401__recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 402 socklen_t *fl) 403{ 404 struct pthread *curthread = _get_curthread(); 405 int oldcancel; 406 ssize_t ret; 407 408 oldcancel = _thr_cancel_enter(curthread); 409 ret = __sys_recvfrom(s, b, l, f, from, fl); 410 _thr_cancel_leave(curthread, oldcancel); 411 return (ret); 412} 413 414__weak_reference(__recvmsg, recvmsg); 415 416ssize_t 417__recvmsg(int s, struct msghdr *m, int f) 418{ 419 struct pthread *curthread = _get_curthread(); 420 ssize_t ret; 421 int oldcancel; 422 423 oldcancel = _thr_cancel_enter(curthread); 424 ret = __sys_recvmsg(s, m, f); 425 _thr_cancel_leave(curthread, oldcancel); 426 return (ret); 427} 428 429__weak_reference(__select, select); 430 431int 432__select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 433 struct timeval *timeout) 434{ 435 struct pthread *curthread = _get_curthread(); 436 int oldcancel; 437 int ret; 438 439 oldcancel = _thr_cancel_enter(curthread); 440 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 441 _thr_cancel_leave(curthread, oldcancel); 442 return ret; 443} 444 445__weak_reference(__sendmsg, sendmsg); 446 447ssize_t 448__sendmsg(int s, const struct msghdr *m, int f) 449{ 450 struct pthread *curthread = _get_curthread(); 451 ssize_t ret; 452 int oldcancel; 453 454 oldcancel = _thr_cancel_enter(curthread); 455 ret = __sys_sendmsg(s, m, f); 456 _thr_cancel_leave(curthread, oldcancel); 457 return (ret); 458} 459 460__weak_reference(__sendto, sendto); 461 462ssize_t 463__sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 464 socklen_t tl) 465{ 466 struct pthread *curthread = _get_curthread(); 467 ssize_t ret; 468 int oldcancel; 469 470 oldcancel = _thr_cancel_enter(curthread); 471 ret = __sys_sendto(s, m, l, f, t, tl); 472 _thr_cancel_leave(curthread, oldcancel); 473 return (ret); 474} 475 476unsigned int 477_sleep(unsigned int seconds) 478{ 479 struct pthread *curthread = _get_curthread(); 480 int oldcancel; 481 unsigned int ret; 482 483 oldcancel = _thr_cancel_enter(curthread); 484 ret = __sleep(seconds); 485 _thr_cancel_leave(curthread, oldcancel); 486 487 return (ret); 488} 489 490__weak_reference(_system, system); 491 492int 493_system(const char *string) 494{ 495 struct pthread *curthread = _get_curthread(); 496 int oldcancel; 497 int ret; 498 499 oldcancel = _thr_cancel_enter(curthread); 500 ret = __system(string); 501 _thr_cancel_leave(curthread, oldcancel); 502 503 return ret; 504} 505 506__weak_reference(_tcdrain, tcdrain); 507 508int 509_tcdrain(int fd) 510{ 511 struct pthread *curthread = _get_curthread(); 512 int oldcancel; 513 int ret; 514 515 oldcancel = _thr_cancel_enter(curthread); 516 ret = __tcdrain(fd); 517 _thr_cancel_leave(curthread, oldcancel); 518 519 return (ret); 520} 521 522__weak_reference(_vfork, vfork); 523 524int 525_vfork(void) 526{ 527 return (fork()); 528} 529 530__weak_reference(_wait, wait); 531 532pid_t 533_wait(int *istat) 534{ 535 struct pthread *curthread = _get_curthread(); 536 int oldcancel; 537 pid_t ret; 538 539 oldcancel = _thr_cancel_enter(curthread); 540 ret = __wait(istat); 541 _thr_cancel_leave(curthread, oldcancel); 542 543 return ret; 544} 545 546__weak_reference(__wait4, wait4); 547 548pid_t 549__wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 550{ 551 struct pthread *curthread = _get_curthread(); 552 int oldcancel; 553 pid_t ret; 554 555 oldcancel = _thr_cancel_enter(curthread); 556 ret = __sys_wait4(pid, istat, options, rusage); 557 _thr_cancel_leave(curthread, oldcancel); 558 559 return ret; 560} 561 562__weak_reference(_waitpid, waitpid); 563 564pid_t 565_waitpid(pid_t wpid, int *status, int options) 566{ 567 struct pthread *curthread = _get_curthread(); 568 int oldcancel; 569 pid_t ret; 570 571 oldcancel = _thr_cancel_enter(curthread); 572 ret = __waitpid(wpid, status, options); 573 _thr_cancel_leave(curthread, oldcancel); 574 575 return ret; 576} 577 578__weak_reference(__write, write); 579 580ssize_t 581__write(int fd, const void *buf, size_t nbytes) 582{ 583 struct pthread *curthread = _get_curthread(); 584 int oldcancel; 585 ssize_t ret; 586 587 oldcancel = _thr_cancel_enter(curthread); 588 ret = __sys_write(fd, buf, nbytes); 589 _thr_cancel_leave(curthread, oldcancel); 590 591 return ret; 592} 593 594__weak_reference(__writev, writev); 595 596ssize_t 597__writev(int fd, const struct iovec *iov, int iovcnt) 598{ 599 struct pthread *curthread = _get_curthread(); 600 int oldcancel; 601 ssize_t ret; 602 603 oldcancel = _thr_cancel_enter(curthread); 604 ret = __sys_writev(fd, iov, iovcnt); 605 _thr_cancel_leave(curthread, oldcancel); 606 607 return ret; 608} 609