thr_syscalls.c revision 211522
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 211522 2010-08-20 04:15:05Z 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. Neither the name of the author nor the names of any co-contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 */ 63 64#include "namespace.h" 65#include <sys/types.h> 66#include <sys/mman.h> 67#include <sys/param.h> 68#include <sys/select.h> 69#include <sys/signalvar.h> 70#include <sys/socket.h> 71#include <sys/stat.h> 72#include <sys/time.h> 73#include <sys/uio.h> 74#include <sys/wait.h> 75#include <aio.h> 76#include <dirent.h> 77#include <errno.h> 78#include <fcntl.h> 79#include <poll.h> 80#include <signal.h> 81#include <stdarg.h> 82#include <stdio.h> 83#include <stdlib.h> 84#include <string.h> 85#include <termios.h> 86#include <unistd.h> 87#include <pthread.h> 88#include "un-namespace.h" 89 90#include "thr_private.h" 91 92extern int __creat(const char *, mode_t); 93extern int __pselect(int, fd_set *, fd_set *, fd_set *, 94 const struct timespec *, const sigset_t *); 95extern unsigned __sleep(unsigned int); 96extern int __system(const char *); 97extern int __tcdrain(int); 98extern int __usleep(useconds_t); 99extern pid_t __wait(int *); 100extern pid_t __waitpid(pid_t, int *, int); 101extern int __sys_aio_suspend(const struct aiocb * const[], int, 102 const struct timespec *); 103extern int __sys_accept(int, struct sockaddr *, socklen_t *); 104extern int __sys_connect(int, const struct sockaddr *, socklen_t); 105extern int __sys_fsync(int); 106extern int __sys_msync(void *, size_t, int); 107extern int __sys_pselect(int, fd_set *, fd_set *, fd_set *, 108 const struct timespec *, const sigset_t *); 109extern int __sys_poll(struct pollfd *, unsigned, int); 110extern ssize_t __sys_recv(int, void *, size_t, int); 111extern ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 112extern ssize_t __sys_recvmsg(int, struct msghdr *, int); 113extern int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 114extern int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 115 off_t *, int); 116extern ssize_t __sys_sendmsg(int, const struct msghdr *, int); 117extern ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 118extern ssize_t __sys_readv(int, const struct iovec *, int); 119extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 120extern ssize_t __sys_writev(int, const struct iovec *, int); 121 122int ___creat(const char *, mode_t); 123int ___pselect(int, fd_set *, fd_set *, fd_set *, 124 const struct timespec *, const sigset_t *); 125unsigned ___sleep(unsigned); 126int ___system(const char *); 127int ___tcdrain(int); 128int ___usleep(useconds_t useconds); 129pid_t ___wait(int *); 130pid_t ___waitpid(pid_t, int *, int); 131int __accept(int, struct sockaddr *, socklen_t *); 132int __aio_suspend(const struct aiocb * const iocbs[], int, 133 const struct timespec *); 134int __close(int); 135int __connect(int, const struct sockaddr *, socklen_t); 136int __fcntl(int, int,...); 137#ifdef SYSCALL_COMPAT 138extern int __fcntl_compat(int, int,...); 139#endif 140int __fsync(int); 141int __msync(void *, size_t, int); 142int __nanosleep(const struct timespec *, struct timespec *); 143int __open(const char *, int,...); 144int __openat(int, const char *, int,...); 145int __poll(struct pollfd *, unsigned int, int); 146ssize_t __read(int, void *buf, size_t); 147ssize_t __readv(int, const struct iovec *, int); 148ssize_t __recvfrom(int, void *, size_t, int f, struct sockaddr *, socklen_t *); 149ssize_t __recvmsg(int, struct msghdr *, int); 150int __select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 151ssize_t __sendmsg(int, const struct msghdr *, int); 152ssize_t __sendto(int, const void *, size_t, int, 153 const struct sockaddr *, socklen_t); 154pid_t __wait3(int *, int, struct rusage *); 155pid_t __wait4(pid_t, int *, int, struct rusage *); 156ssize_t __write(int, const void *, size_t); 157ssize_t __writev(int, const struct iovec *, int); 158 159__weak_reference(__accept, accept); 160 161int 162__accept(int s, struct sockaddr *addr, socklen_t *addrlen) 163{ 164 struct pthread *curthread; 165 int ret; 166 167 curthread = _get_curthread(); 168 _thr_cancel_enter(curthread); 169 ret = __sys_accept(s, addr, addrlen); 170 _thr_cancel_leave(curthread); 171 172 return (ret); 173} 174 175__weak_reference(__aio_suspend, aio_suspend); 176 177int 178__aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 179 timespec *timeout) 180{ 181 struct pthread *curthread = _get_curthread(); 182 int ret; 183 184 _thr_cancel_enter(curthread); 185 ret = __sys_aio_suspend(iocbs, niocb, timeout); 186 _thr_cancel_leave(curthread); 187 188 return (ret); 189} 190 191__weak_reference(__close, close); 192 193int 194__close(int fd) 195{ 196 struct pthread *curthread = _get_curthread(); 197 int ret; 198 199 _thr_cancel_enter(curthread); 200 ret = __sys_close(fd); 201 _thr_cancel_leave(curthread); 202 203 return (ret); 204} 205 206__weak_reference(__connect, connect); 207 208int 209__connect(int fd, const struct sockaddr *name, socklen_t namelen) 210{ 211 struct pthread *curthread = _get_curthread(); 212 int ret; 213 214 _thr_cancel_enter(curthread); 215 ret = __sys_connect(fd, name, namelen); 216 _thr_cancel_leave(curthread); 217 218 return (ret); 219} 220 221__weak_reference(___creat, creat); 222 223int 224___creat(const char *path, mode_t mode) 225{ 226 struct pthread *curthread = _get_curthread(); 227 int ret; 228 229 _thr_cancel_enter(curthread); 230 ret = __creat(path, mode); 231 _thr_cancel_leave(curthread); 232 233 return ret; 234} 235 236__weak_reference(__fcntl, fcntl); 237 238int 239__fcntl(int fd, int cmd,...) 240{ 241 struct pthread *curthread = _get_curthread(); 242 int ret; 243 va_list ap; 244 245 va_start(ap, cmd); 246 switch (cmd) { 247 case F_DUPFD: 248 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 249 break; 250 case F_SETFD: 251 case F_SETFL: 252 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 253 break; 254 case F_GETFD: 255 case F_GETFL: 256 ret = __sys_fcntl(fd, cmd); 257 break; 258 259 case F_OSETLKW: 260 case F_SETLKW: 261 _thr_cancel_enter(curthread); 262#ifdef SYSCALL_COMPAT 263 ret = __fcntl_compat(fd, cmd, va_arg(ap, void *)); 264#else 265 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 266#endif 267 _thr_cancel_leave(curthread); 268 break; 269 default: 270#ifdef SYSCALL_COMPAT 271 ret = __fcntl_compat(fd, cmd, va_arg(ap, void *)); 272#else 273 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 274#endif 275 } 276 va_end(ap); 277 278 return (ret); 279} 280 281__weak_reference(__fsync, fsync); 282 283int 284__fsync(int fd) 285{ 286 struct pthread *curthread = _get_curthread(); 287 int ret; 288 289 _thr_cancel_enter(curthread); 290 ret = __sys_fsync(fd); 291 _thr_cancel_leave(curthread); 292 293 return (ret); 294} 295 296__weak_reference(__msync, msync); 297 298int 299__msync(void *addr, size_t len, int flags) 300{ 301 struct pthread *curthread = _get_curthread(); 302 int ret; 303 304 _thr_cancel_enter(curthread); 305 ret = __sys_msync(addr, len, flags); 306 _thr_cancel_leave(curthread); 307 308 return ret; 309} 310 311__weak_reference(__nanosleep, nanosleep); 312 313int 314__nanosleep(const struct timespec *time_to_sleep, 315 struct timespec *time_remaining) 316{ 317 struct pthread *curthread = _get_curthread(); 318 int ret; 319 320 _thr_cancel_enter(curthread); 321 ret = __sys_nanosleep(time_to_sleep, time_remaining); 322 _thr_cancel_leave(curthread); 323 324 return (ret); 325} 326 327__weak_reference(__open, open); 328 329int 330__open(const char *path, int flags,...) 331{ 332 struct pthread *curthread = _get_curthread(); 333 int ret; 334 int mode = 0; 335 va_list ap; 336 337 _thr_cancel_enter(curthread); 338 339 /* Check if the file is being created: */ 340 if (flags & O_CREAT) { 341 /* Get the creation mode: */ 342 va_start(ap, flags); 343 mode = va_arg(ap, int); 344 va_end(ap); 345 } 346 347 ret = __sys_open(path, flags, mode); 348 349 _thr_cancel_leave(curthread); 350 351 return ret; 352} 353 354__weak_reference(__openat, openat); 355 356int 357__openat(int fd, const char *path, int flags, ...) 358{ 359 struct pthread *curthread = _get_curthread(); 360 int ret; 361 int mode = 0; 362 va_list ap; 363 364 _thr_cancel_enter(curthread); 365 366 /* Check if the file is being created: */ 367 if (flags & O_CREAT) { 368 /* Get the creation mode: */ 369 va_start(ap, flags); 370 mode = va_arg(ap, int); 371 va_end(ap); 372 } 373 374 ret = __sys_openat(fd, path, flags, mode); 375 376 _thr_cancel_leave(curthread); 377 378 return ret; 379} 380 381__weak_reference(__poll, poll); 382 383int 384__poll(struct pollfd *fds, unsigned int nfds, int timeout) 385{ 386 struct pthread *curthread = _get_curthread(); 387 int ret; 388 389 _thr_cancel_enter(curthread); 390 ret = __sys_poll(fds, nfds, timeout); 391 _thr_cancel_leave(curthread); 392 393 return ret; 394} 395 396__weak_reference(___pselect, pselect); 397 398int 399___pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 400 const struct timespec *timo, const sigset_t *mask) 401{ 402 struct pthread *curthread = _get_curthread(); 403 int ret; 404 405 _thr_cancel_enter(curthread); 406 ret = __sys_pselect(count, rfds, wfds, efds, timo, mask); 407 _thr_cancel_leave(curthread); 408 409 return (ret); 410} 411 412__weak_reference(__read, read); 413 414ssize_t 415__read(int fd, void *buf, size_t nbytes) 416{ 417 struct pthread *curthread = _get_curthread(); 418 ssize_t ret; 419 420 _thr_cancel_enter(curthread); 421 ret = __sys_read(fd, buf, nbytes); 422 _thr_cancel_leave(curthread); 423 424 return ret; 425} 426 427__weak_reference(__readv, readv); 428 429ssize_t 430__readv(int fd, const struct iovec *iov, int iovcnt) 431{ 432 struct pthread *curthread = _get_curthread(); 433 ssize_t ret; 434 435 _thr_cancel_enter(curthread); 436 ret = __sys_readv(fd, iov, iovcnt); 437 _thr_cancel_leave(curthread); 438 439 return ret; 440} 441 442__weak_reference(__recvfrom, recvfrom); 443 444ssize_t 445__recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 446 socklen_t *fl) 447{ 448 struct pthread *curthread = _get_curthread(); 449 ssize_t ret; 450 451 _thr_cancel_enter(curthread); 452 ret = __sys_recvfrom(s, b, l, f, from, fl); 453 _thr_cancel_leave(curthread); 454 return (ret); 455} 456 457__weak_reference(__recvmsg, recvmsg); 458 459ssize_t 460__recvmsg(int s, struct msghdr *m, int f) 461{ 462 struct pthread *curthread = _get_curthread(); 463 ssize_t ret; 464 465 _thr_cancel_enter(curthread); 466 ret = __sys_recvmsg(s, m, f); 467 _thr_cancel_leave(curthread); 468 return (ret); 469} 470 471__weak_reference(__select, select); 472 473int 474__select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 475 struct timeval *timeout) 476{ 477 struct pthread *curthread = _get_curthread(); 478 int ret; 479 480 _thr_cancel_enter(curthread); 481 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 482 _thr_cancel_leave(curthread); 483 return ret; 484} 485 486__weak_reference(__sendmsg, sendmsg); 487 488ssize_t 489__sendmsg(int s, const struct msghdr *m, int f) 490{ 491 struct pthread *curthread = _get_curthread(); 492 ssize_t ret; 493 494 _thr_cancel_enter(curthread); 495 ret = __sys_sendmsg(s, m, f); 496 _thr_cancel_leave(curthread); 497 return (ret); 498} 499 500__weak_reference(__sendto, sendto); 501 502ssize_t 503__sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 504 socklen_t tl) 505{ 506 struct pthread *curthread = _get_curthread(); 507 ssize_t ret; 508 509 _thr_cancel_enter(curthread); 510 ret = __sys_sendto(s, m, l, f, t, tl); 511 _thr_cancel_leave(curthread); 512 return (ret); 513} 514 515__weak_reference(___sleep, sleep); 516 517unsigned int 518___sleep(unsigned int seconds) 519{ 520 struct pthread *curthread = _get_curthread(); 521 unsigned int ret; 522 523 _thr_cancel_enter(curthread); 524 ret = __sleep(seconds); 525 _thr_cancel_leave(curthread); 526 527 return (ret); 528} 529 530__weak_reference(___system, system); 531 532int 533___system(const char *string) 534{ 535 struct pthread *curthread = _get_curthread(); 536 int ret; 537 538 _thr_cancel_enter(curthread); 539 ret = __system(string); 540 _thr_cancel_leave(curthread); 541 542 return ret; 543} 544 545__weak_reference(___tcdrain, tcdrain); 546 547int 548___tcdrain(int fd) 549{ 550 struct pthread *curthread = _get_curthread(); 551 int ret; 552 553 _thr_cancel_enter(curthread); 554 ret = __tcdrain(fd); 555 _thr_cancel_leave(curthread); 556 557 return (ret); 558} 559 560__weak_reference(___usleep, usleep); 561 562int 563___usleep(useconds_t useconds) 564{ 565 struct pthread *curthread = _get_curthread(); 566 int ret; 567 568 _thr_cancel_enter(curthread); 569 ret = __usleep(useconds); 570 _thr_cancel_leave(curthread); 571 572 return (ret); 573} 574 575__weak_reference(___wait, wait); 576 577pid_t 578___wait(int *istat) 579{ 580 struct pthread *curthread = _get_curthread(); 581 pid_t ret; 582 583 _thr_cancel_enter(curthread); 584 ret = __wait(istat); 585 _thr_cancel_leave(curthread); 586 587 return ret; 588} 589 590__weak_reference(__wait3, wait3); 591 592pid_t 593__wait3(int *status, int options, struct rusage *rusage) 594{ 595 struct pthread *curthread = _get_curthread(); 596 pid_t ret; 597 598 _thr_cancel_enter(curthread); 599 ret = _wait4(WAIT_ANY, status, options, rusage); 600 _thr_cancel_leave(curthread); 601 602 return (ret); 603} 604 605__weak_reference(__wait4, wait4); 606 607pid_t 608__wait4(pid_t pid, int *status, int options, struct rusage *rusage) 609{ 610 struct pthread *curthread = _get_curthread(); 611 pid_t ret; 612 613 _thr_cancel_enter(curthread); 614 ret = __sys_wait4(pid, status, options, rusage); 615 _thr_cancel_leave(curthread); 616 617 return ret; 618} 619 620__weak_reference(___waitpid, waitpid); 621 622pid_t 623___waitpid(pid_t wpid, int *status, int options) 624{ 625 struct pthread *curthread = _get_curthread(); 626 pid_t ret; 627 628 _thr_cancel_enter(curthread); 629 ret = __waitpid(wpid, status, options); 630 _thr_cancel_leave(curthread); 631 632 return ret; 633} 634 635__weak_reference(__write, write); 636 637ssize_t 638__write(int fd, const void *buf, size_t nbytes) 639{ 640 struct pthread *curthread = _get_curthread(); 641 ssize_t ret; 642 643 _thr_cancel_enter(curthread); 644 ret = __sys_write(fd, buf, nbytes); 645 _thr_cancel_leave(curthread); 646 647 return ret; 648} 649 650__weak_reference(__writev, writev); 651 652ssize_t 653__writev(int fd, const struct iovec *iov, int iovcnt) 654{ 655 struct pthread *curthread = _get_curthread(); 656 ssize_t ret; 657 658 _thr_cancel_enter(curthread); 659 ret = __sys_writev(fd, iov, iovcnt); 660 _thr_cancel_leave(curthread); 661 662 return ret; 663} 664