thr_syscalls.c revision 157457
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 157457 2006-04-04 02:57:49Z 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 "namespace.h" 68#include <sys/types.h> 69#include <sys/mman.h> 70#include <sys/param.h> 71#include <sys/select.h> 72#include <sys/signalvar.h> 73#include <sys/socket.h> 74#include <sys/stat.h> 75#include <sys/time.h> 76#include <sys/uio.h> 77#include <sys/wait.h> 78#include <aio.h> 79#include <dirent.h> 80#include <errno.h> 81#include <fcntl.h> 82#include <poll.h> 83#include <signal.h> 84#include <stdarg.h> 85#include <stdio.h> 86#include <stdlib.h> 87#include <string.h> 88#include <termios.h> 89#include <unistd.h> 90#include <pthread.h> 91#include "un-namespace.h" 92 93#include "thr_private.h" 94 95extern int __creat(const char *, mode_t); 96extern int __pause(void); 97extern int __pselect(int, fd_set *, fd_set *, fd_set *, 98 const struct timespec *, const sigset_t *); 99extern unsigned __sleep(unsigned int); 100extern int __system(const char *); 101extern int __tcdrain(int); 102extern int __usleep(useconds_t); 103extern pid_t __wait(int *); 104extern pid_t __waitpid(pid_t, int *, int); 105extern int __sys_aio_suspend(const struct aiocb * const[], int, 106 const struct timespec *); 107extern int __sys_accept(int, struct sockaddr *, socklen_t *); 108extern int __sys_connect(int, const struct sockaddr *, socklen_t); 109extern int __sys_fsync(int); 110extern int __sys_msync(void *, size_t, int); 111extern int __sys_poll(struct pollfd *, unsigned, int); 112extern ssize_t __sys_recv(int, void *, size_t, int); 113extern ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 114extern ssize_t __sys_recvmsg(int, struct msghdr *, int); 115extern int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 116extern int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 117 off_t *, int); 118extern ssize_t __sys_sendmsg(int, const struct msghdr *, int); 119extern ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 120extern ssize_t __sys_readv(int, const struct iovec *, int); 121extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 122extern ssize_t __sys_writev(int, const struct iovec *, int); 123 124int ___creat(const char *, mode_t); 125int __accept(int, struct sockaddr *, socklen_t *); 126int __close(int); 127int __connect(int, const struct sockaddr *, socklen_t); 128int __fcntl(int, int,...); 129int __fsync(int); 130int __msync(void *, size_t, int); 131int __nanosleep(const struct timespec *, struct timespec *); 132int __open(const char *, int,...); 133int __poll(struct pollfd *, unsigned int, int); 134ssize_t __read(int, void *buf, size_t); 135ssize_t __readv(int, const struct iovec *, int); 136ssize_t __recvfrom(int, void *, size_t, int f, struct sockaddr *, socklen_t *); 137ssize_t __recvmsg(int, struct msghdr *, int); 138int __select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 139ssize_t __sendmsg(int, const struct msghdr *, int); 140ssize_t __sendto(int, const void *, size_t, int, 141 const struct sockaddr *, socklen_t); 142pid_t __wait4(pid_t, int *, int, struct rusage *); 143ssize_t __write(int, const void *, size_t); 144ssize_t __writev(int, const struct iovec *, int); 145int _aio_suspend(const struct aiocb * const iocbs[], int, 146 const struct timespec *); 147int _pause(void); 148int _pselect(int, fd_set *, fd_set *, fd_set *, 149 const struct timespec *, const sigset_t *); 150int _raise(int); 151unsigned _sleep(unsigned); 152int _system(const char *); 153int _tcdrain(int); 154int _vfork(void); 155pid_t _wait(int *); 156 157 158__weak_reference(__accept, accept); 159 160int 161__accept(int s, struct sockaddr *addr, socklen_t *addrlen) 162{ 163 struct pthread *curthread; 164 int oldcancel; 165 int ret; 166 167 curthread = _get_curthread(); 168 oldcancel = _thr_cancel_enter(curthread); 169 ret = __sys_accept(s, addr, addrlen); 170 _thr_cancel_leave(curthread, oldcancel); 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 oldcancel; 183 int ret; 184 185 oldcancel = _thr_cancel_enter(curthread); 186 ret = __sys_aio_suspend(iocbs, niocb, timeout); 187 _thr_cancel_leave(curthread, oldcancel); 188 189 return (ret); 190} 191 192__weak_reference(__close, close); 193 194int 195__close(int fd) 196{ 197 struct pthread *curthread = _get_curthread(); 198 int oldcancel; 199 int ret; 200 201 oldcancel = _thr_cancel_enter(curthread); 202 ret = __sys_close(fd); 203 _thr_cancel_leave(curthread, oldcancel); 204 205 return (ret); 206} 207 208__weak_reference(__connect, connect); 209 210int 211__connect(int fd, const struct sockaddr *name, socklen_t namelen) 212{ 213 struct pthread *curthread = _get_curthread(); 214 int oldcancel; 215 int ret; 216 217 oldcancel = _thr_cancel_enter(curthread); 218 ret = __sys_connect(fd, name, namelen); 219 _thr_cancel_leave(curthread, oldcancel); 220 221 return (ret); 222} 223 224__weak_reference(___creat, creat); 225 226int 227___creat(const char *path, mode_t mode) 228{ 229 struct pthread *curthread = _get_curthread(); 230 int oldcancel; 231 int ret; 232 233 oldcancel = _thr_cancel_enter(curthread); 234 ret = __creat(path, mode); 235 _thr_cancel_leave(curthread, oldcancel); 236 237 return ret; 238} 239 240__weak_reference(__fcntl, fcntl); 241 242int 243__fcntl(int fd, int cmd,...) 244{ 245 struct pthread *curthread = _get_curthread(); 246 int oldcancel; 247 int ret; 248 va_list ap; 249 250 oldcancel = _thr_cancel_enter(curthread); 251 252 va_start(ap, cmd); 253 switch (cmd) { 254 case F_DUPFD: 255 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 256 break; 257 case F_SETFD: 258 case F_SETFL: 259 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 260 break; 261 case F_GETFD: 262 case F_GETFL: 263 ret = __sys_fcntl(fd, cmd); 264 break; 265 default: 266 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 267 } 268 va_end(ap); 269 270 _thr_cancel_leave(curthread, oldcancel); 271 272 return (ret); 273} 274 275__weak_reference(__fsync, fsync); 276 277int 278__fsync(int fd) 279{ 280 struct pthread *curthread = _get_curthread(); 281 int oldcancel; 282 int ret; 283 284 oldcancel = _thr_cancel_enter(curthread); 285 ret = __sys_fsync(fd); 286 _thr_cancel_leave(curthread, oldcancel); 287 288 return (ret); 289} 290 291__weak_reference(__msync, msync); 292 293int 294__msync(void *addr, size_t len, int flags) 295{ 296 struct pthread *curthread = _get_curthread(); 297 int oldcancel; 298 int ret; 299 300 oldcancel = _thr_cancel_enter(curthread); 301 ret = __sys_msync(addr, len, flags); 302 _thr_cancel_leave(curthread, oldcancel); 303 304 return ret; 305} 306 307__weak_reference(__nanosleep, nanosleep); 308 309int 310__nanosleep(const struct timespec *time_to_sleep, 311 struct timespec *time_remaining) 312{ 313 struct pthread *curthread = _get_curthread(); 314 int oldcancel; 315 int ret; 316 317 oldcancel = _thr_cancel_enter(curthread); 318 ret = __sys_nanosleep(time_to_sleep, time_remaining); 319 _thr_cancel_leave(curthread, oldcancel); 320 321 return (ret); 322} 323 324__weak_reference(__open, open); 325 326int 327__open(const char *path, int flags,...) 328{ 329 struct pthread *curthread = _get_curthread(); 330 int oldcancel; 331 int ret; 332 int mode = 0; 333 va_list ap; 334 335 oldcancel = _thr_cancel_enter(curthread); 336 337 /* Check if the file is being created: */ 338 if (flags & O_CREAT) { 339 /* Get the creation mode: */ 340 va_start(ap, flags); 341 mode = va_arg(ap, int); 342 va_end(ap); 343 } 344 345 ret = __sys_open(path, flags, mode); 346 347 _thr_cancel_leave(curthread, oldcancel); 348 349 return ret; 350} 351 352__weak_reference(_pause, pause); 353 354int 355_pause(void) 356{ 357 struct pthread *curthread = _get_curthread(); 358 int oldcancel; 359 int ret; 360 361 oldcancel = _thr_cancel_enter(curthread); 362 ret = __pause(); 363 _thr_cancel_leave(curthread, oldcancel); 364 365 return ret; 366} 367 368__weak_reference(__poll, poll); 369 370int 371__poll(struct pollfd *fds, unsigned int nfds, int timeout) 372{ 373 struct pthread *curthread = _get_curthread(); 374 int oldcancel; 375 int ret; 376 377 oldcancel = _thr_cancel_enter(curthread); 378 ret = __sys_poll(fds, nfds, timeout); 379 _thr_cancel_leave(curthread, oldcancel); 380 381 return ret; 382} 383 384__weak_reference(_pselect, pselect); 385 386int 387_pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 388 const struct timespec *timo, const sigset_t *mask) 389{ 390 struct pthread *curthread = _get_curthread(); 391 int oldcancel; 392 int ret; 393 394 oldcancel = _thr_cancel_enter(curthread); 395 ret = __pselect(count, rfds, wfds, efds, timo, mask); 396 _thr_cancel_leave(curthread, oldcancel); 397 398 return (ret); 399} 400 401__weak_reference(_raise, raise); 402 403int 404_raise(int sig) 405{ 406 int ret; 407 408 if (!_thr_isthreaded()) 409 ret = kill(getpid(), sig); 410 else 411 ret = _thr_send_sig(_get_curthread(), sig); 412 return (ret); 413} 414 415__weak_reference(__read, read); 416 417ssize_t 418__read(int fd, void *buf, size_t nbytes) 419{ 420 struct pthread *curthread = _get_curthread(); 421 int oldcancel; 422 ssize_t ret; 423 424 oldcancel = _thr_cancel_enter(curthread); 425 ret = __sys_read(fd, buf, nbytes); 426 _thr_cancel_leave(curthread, oldcancel); 427 428 return ret; 429} 430 431__weak_reference(__readv, readv); 432 433ssize_t 434__readv(int fd, const struct iovec *iov, int iovcnt) 435{ 436 struct pthread *curthread = _get_curthread(); 437 int oldcancel; 438 ssize_t ret; 439 440 oldcancel = _thr_cancel_enter(curthread); 441 ret = __sys_readv(fd, iov, iovcnt); 442 _thr_cancel_leave(curthread, oldcancel); 443 444 return ret; 445} 446 447__weak_reference(__recvfrom, recvfrom); 448 449ssize_t 450__recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 451 socklen_t *fl) 452{ 453 struct pthread *curthread = _get_curthread(); 454 int oldcancel; 455 ssize_t ret; 456 457 oldcancel = _thr_cancel_enter(curthread); 458 ret = __sys_recvfrom(s, b, l, f, from, fl); 459 _thr_cancel_leave(curthread, oldcancel); 460 return (ret); 461} 462 463__weak_reference(__recvmsg, recvmsg); 464 465ssize_t 466__recvmsg(int s, struct msghdr *m, int f) 467{ 468 struct pthread *curthread = _get_curthread(); 469 ssize_t ret; 470 int oldcancel; 471 472 oldcancel = _thr_cancel_enter(curthread); 473 ret = __sys_recvmsg(s, m, f); 474 _thr_cancel_leave(curthread, oldcancel); 475 return (ret); 476} 477 478__weak_reference(__select, select); 479 480int 481__select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 482 struct timeval *timeout) 483{ 484 struct pthread *curthread = _get_curthread(); 485 int oldcancel; 486 int ret; 487 488 oldcancel = _thr_cancel_enter(curthread); 489 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 490 _thr_cancel_leave(curthread, oldcancel); 491 return ret; 492} 493 494__weak_reference(__sendmsg, sendmsg); 495 496ssize_t 497__sendmsg(int s, const struct msghdr *m, int f) 498{ 499 struct pthread *curthread = _get_curthread(); 500 ssize_t ret; 501 int oldcancel; 502 503 oldcancel = _thr_cancel_enter(curthread); 504 ret = __sys_sendmsg(s, m, f); 505 _thr_cancel_leave(curthread, oldcancel); 506 return (ret); 507} 508 509__weak_reference(__sendto, sendto); 510 511ssize_t 512__sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 513 socklen_t tl) 514{ 515 struct pthread *curthread = _get_curthread(); 516 ssize_t ret; 517 int oldcancel; 518 519 oldcancel = _thr_cancel_enter(curthread); 520 ret = __sys_sendto(s, m, l, f, t, tl); 521 _thr_cancel_leave(curthread, oldcancel); 522 return (ret); 523} 524 525__weak_reference(_sleep, sleep); 526 527unsigned int 528_sleep(unsigned int seconds) 529{ 530 struct pthread *curthread = _get_curthread(); 531 int oldcancel; 532 unsigned int ret; 533 534 oldcancel = _thr_cancel_enter(curthread); 535 ret = __sleep(seconds); 536 _thr_cancel_leave(curthread, oldcancel); 537 538 return (ret); 539} 540 541__weak_reference(_system, system); 542 543int 544_system(const char *string) 545{ 546 struct pthread *curthread = _get_curthread(); 547 int oldcancel; 548 int ret; 549 550 oldcancel = _thr_cancel_enter(curthread); 551 ret = __system(string); 552 _thr_cancel_leave(curthread, oldcancel); 553 554 return ret; 555} 556 557__weak_reference(_tcdrain, tcdrain); 558 559int 560_tcdrain(int fd) 561{ 562 struct pthread *curthread = _get_curthread(); 563 int oldcancel; 564 int ret; 565 566 oldcancel = _thr_cancel_enter(curthread); 567 ret = __tcdrain(fd); 568 _thr_cancel_leave(curthread, oldcancel); 569 570 return (ret); 571} 572 573__weak_reference(_usleep, usleep); 574 575int 576_usleep(useconds_t useconds) 577{ 578 struct pthread *curthread = _get_curthread(); 579 int oldcancel; 580 int ret; 581 582 oldcancel = _thr_cancel_enter(curthread); 583 ret = __usleep(useconds); 584 _thr_cancel_leave(curthread, oldcancel); 585 586 return (ret); 587} 588 589__weak_reference(_vfork, vfork); 590 591int 592_vfork(void) 593{ 594 return (fork()); 595} 596 597__weak_reference(_wait, wait); 598 599pid_t 600_wait(int *istat) 601{ 602 struct pthread *curthread = _get_curthread(); 603 int oldcancel; 604 pid_t ret; 605 606 oldcancel = _thr_cancel_enter(curthread); 607 ret = __wait(istat); 608 _thr_cancel_leave(curthread, oldcancel); 609 610 return ret; 611} 612 613__weak_reference(__wait4, wait4); 614 615pid_t 616__wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 617{ 618 struct pthread *curthread = _get_curthread(); 619 int oldcancel; 620 pid_t ret; 621 622 oldcancel = _thr_cancel_enter(curthread); 623 ret = __sys_wait4(pid, istat, options, rusage); 624 _thr_cancel_leave(curthread, oldcancel); 625 626 return ret; 627} 628 629__weak_reference(_waitpid, waitpid); 630 631pid_t 632_waitpid(pid_t wpid, int *status, int options) 633{ 634 struct pthread *curthread = _get_curthread(); 635 int oldcancel; 636 pid_t ret; 637 638 oldcancel = _thr_cancel_enter(curthread); 639 ret = __waitpid(wpid, status, options); 640 _thr_cancel_leave(curthread, oldcancel); 641 642 return ret; 643} 644 645__weak_reference(__write, write); 646 647ssize_t 648__write(int fd, const void *buf, size_t nbytes) 649{ 650 struct pthread *curthread = _get_curthread(); 651 int oldcancel; 652 ssize_t ret; 653 654 oldcancel = _thr_cancel_enter(curthread); 655 ret = __sys_write(fd, buf, nbytes); 656 _thr_cancel_leave(curthread, oldcancel); 657 658 return ret; 659} 660 661__weak_reference(__writev, writev); 662 663ssize_t 664__writev(int fd, const struct iovec *iov, int iovcnt) 665{ 666 struct pthread *curthread = _get_curthread(); 667 int oldcancel; 668 ssize_t ret; 669 670 oldcancel = _thr_cancel_enter(curthread); 671 ret = __sys_writev(fd, iov, iovcnt); 672 _thr_cancel_leave(curthread, oldcancel); 673 674 return ret; 675} 676