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 * $FreeBSD$ 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 93 extern int __creat(const char *, mode_t); 94 extern int __pause(void); 95 extern int __pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 96 const struct timespec *timo, const sigset_t *mask); 97 extern unsigned int __sleep(unsigned int); 98 extern int __system(const char *); 99 extern int __tcdrain(int); 100 extern int __usleep(useconds_t); 101 extern pid_t __wait(int *); 102 extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 103 extern pid_t __waitpid(pid_t, int *, int); 104 105 __weak_reference(__accept, accept); 106 int 107 __accept(int s, struct sockaddr *addr, socklen_t *addrlen) 108 { 109 struct pthread *curthread; 110 int oldcancel; 111 int ret; 112 113 curthread = _get_curthread(); 114 oldcancel = _thr_cancel_enter(curthread); 115 ret = __sys_accept(s, addr, addrlen); 116 _thr_cancel_leave(curthread, oldcancel); 117 118 return (ret); 119 } 120 121 __weak_reference(_aio_suspend, aio_suspend); 122 123 int 124 _aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 125 timespec *timeout) 126 { 127 struct pthread *curthread = _get_curthread(); 128 int oldcancel; 129 int ret; 130 131 oldcancel = _thr_cancel_enter(curthread); 132 ret = __sys_aio_suspend(iocbs, niocb, timeout); 133 _thr_cancel_leave(curthread, oldcancel); 134 135 return (ret); 136 } 137 138 __weak_reference(__close, close); 139 140 int 141 __close(int fd) 142 { 143 struct pthread *curthread = _get_curthread(); 144 int oldcancel; 145 int ret; 146 147 oldcancel = _thr_cancel_enter(curthread); 148 ret = __sys_close(fd); 149 _thr_cancel_leave(curthread, oldcancel); 150 151 return (ret); 152 } 153 154 __weak_reference(__connect, connect); 155 156 int 157 __connect(int fd, const struct sockaddr *name, socklen_t namelen) 158 { 159 struct pthread *curthread = _get_curthread(); 160 int oldcancel; 161 int ret; 162 163 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); 171 172 int 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); 187 188 int 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); 222 223 int 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); 238 239 int 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); 254 255 int 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); 271 272 int 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); 299 300 int 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); 315 316 int 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); 331 332 int 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); 348 349 int 350 _raise(int sig) 351 { 352 int ret; 353 354 if (!_thr_isthreaded()) 355 ret = kill(getpid(), sig); 356 else 357 ret = _thr_send_sig(_get_curthread(), sig); 358 return (ret); 359 } 360 361 __weak_reference(__read, read); 362 363 ssize_t 364 __read(int fd, void *buf, size_t nbytes) 365 { 366 struct pthread *curthread = _get_curthread(); 367 int oldcancel; 368 ssize_t ret; 369 370 oldcancel = _thr_cancel_enter(curthread); 371 ret = __sys_read(fd, buf, nbytes); 372 _thr_cancel_leave(curthread, oldcancel); 373 374 return ret; 375 } 376 377 __weak_reference(__readv, readv); 378 379 ssize_t 380 __readv(int fd, const struct iovec *iov, int iovcnt) 381 { 382 struct pthread *curthread = _get_curthread(); 383 int oldcancel; 384 ssize_t ret; 385 386 oldcancel = _thr_cancel_enter(curthread); 387 ret = __sys_readv(fd, iov, iovcnt); 388 _thr_cancel_leave(curthread, oldcancel); 389 390 return ret; 391 } 392 393 __weak_reference(__recvfrom, recvfrom); 394 395 ssize_t 396 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 397 socklen_t *fl) 398 { 399 struct pthread *curthread = _get_curthread(); 400 int oldcancel; 401 ssize_t ret; 402 403 oldcancel = _thr_cancel_enter(curthread); 404 ret = __sys_recvfrom(s, b, l, f, from, fl); 405 _thr_cancel_leave(curthread, oldcancel); 406 return (ret); 407 } 408 409 __weak_reference(__recvmsg, recvmsg); 410 411 ssize_t 412 __recvmsg(int s, struct msghdr *m, int f) 413 { 414 struct pthread *curthread = _get_curthread(); 415 ssize_t ret; 416 int oldcancel; 417 418 oldcancel = _thr_cancel_enter(curthread); 419 ret = __sys_recvmsg(s, m, f); 420 _thr_cancel_leave(curthread, oldcancel); 421 return (ret); 422 } 423 424 __weak_reference(__select, select); 425 426 int 427 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 428 struct timeval *timeout) 429 { 430 struct pthread *curthread = _get_curthread(); 431 int oldcancel; 432 int ret; 433 434 oldcancel = _thr_cancel_enter(curthread); 435 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 436 _thr_cancel_leave(curthread, oldcancel); 437 return ret; 438 } 439 440 __weak_reference(__sendmsg, sendmsg); 441 442 ssize_t 443 __sendmsg(int s, const struct msghdr *m, int f) 444 { 445 struct pthread *curthread = _get_curthread(); 446 ssize_t ret; 447 int oldcancel; 448 449 oldcancel = _thr_cancel_enter(curthread); 450 ret = __sys_sendmsg(s, m, f); 451 _thr_cancel_leave(curthread, oldcancel); 452 return (ret); 453 } 454 455 __weak_reference(__sendto, sendto); 456 457 ssize_t 458 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 459 socklen_t tl) 460 { 461 struct pthread *curthread = _get_curthread(); 462 ssize_t ret; 463 int oldcancel; 464 465 oldcancel = _thr_cancel_enter(curthread); 466 ret = __sys_sendto(s, m, l, f, t, tl); 467 _thr_cancel_leave(curthread, oldcancel); 468 return (ret); 469 } 470 471 __weak_reference(_sleep, sleep); 472 473 unsigned int 474 _sleep(unsigned int seconds) 475 { 476 struct pthread *curthread = _get_curthread(); 477 int oldcancel; 478 unsigned int ret; 479 480 oldcancel = _thr_cancel_enter(curthread); 481 ret = __sleep(seconds); 482 _thr_cancel_leave(curthread, oldcancel); 483 484 return (ret); 485 } 486 487 __weak_reference(_system, system); 488 489 int 490 _system(const char *string) 491 { 492 struct pthread *curthread = _get_curthread(); 493 int oldcancel; 494 int ret; 495 496 oldcancel = _thr_cancel_enter(curthread); 497 ret = __system(string); 498 _thr_cancel_leave(curthread, oldcancel); 499 500 return ret; 501 } 502 503 __weak_reference(_tcdrain, tcdrain); 504 505 int 506 _tcdrain(int fd) 507 { 508 struct pthread *curthread = _get_curthread(); 509 int oldcancel; 510 int ret; 511 512 oldcancel = _thr_cancel_enter(curthread); 513 ret = __tcdrain(fd); 514 _thr_cancel_leave(curthread, oldcancel); 515 516 return (ret); 517 } 518 519 __weak_reference(_usleep, usleep); 520 521 int 522 _usleep(useconds_t useconds) 523 { 524 struct pthread *curthread = _get_curthread(); 525 int oldcancel; 526 int ret; 527 528 oldcancel = _thr_cancel_enter(curthread); 529 ret = __usleep(useconds); 530 _thr_cancel_leave(curthread, oldcancel); 531 532 return (ret); 533 } 534 535 __weak_reference(_vfork, vfork); 536 537 int 538 _vfork(void) 539 { 540 return (fork()); 541 } 542 543 __weak_reference(_wait, wait); 544 545 pid_t 546 _wait(int *istat) 547 { 548 struct pthread *curthread = _get_curthread(); 549 int oldcancel; 550 pid_t ret; 551 552 oldcancel = _thr_cancel_enter(curthread); 553 ret = __wait(istat); 554 _thr_cancel_leave(curthread, oldcancel); 555 556 return ret; 557 } 558 559 __weak_reference(__wait4, wait4); 560 561 pid_t 562 __wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 563 { 564 struct pthread *curthread = _get_curthread(); 565 int oldcancel; 566 pid_t ret; 567 568 oldcancel = _thr_cancel_enter(curthread); 569 ret = __sys_wait4(pid, istat, options, rusage); 570 _thr_cancel_leave(curthread, oldcancel); 571 572 return ret; 573 } 574 575 __weak_reference(_waitpid, waitpid); 576 577 pid_t 578 _waitpid(pid_t wpid, int *status, int options) 579 { 580 struct pthread *curthread = _get_curthread(); 581 int oldcancel; 582 pid_t ret; 583 584 oldcancel = _thr_cancel_enter(curthread); 585 ret = __waitpid(wpid, status, options); 586 _thr_cancel_leave(curthread, oldcancel); 587 588 return ret; 589 } 590 591 __weak_reference(__write, write); 592 593 ssize_t 594 __write(int fd, const void *buf, size_t nbytes) 595 { 596 struct pthread *curthread = _get_curthread(); 597 int oldcancel; 598 ssize_t ret; 599 600 oldcancel = _thr_cancel_enter(curthread); 601 ret = __sys_write(fd, buf, nbytes); 602 _thr_cancel_leave(curthread, oldcancel); 603 604 return ret; 605 } 606 607 __weak_reference(__writev, writev); 608 609 ssize_t 610 __writev(int fd, const struct iovec *iov, int iovcnt) 611 { 612 struct pthread *curthread = _get_curthread(); 613 int oldcancel; 614 ssize_t ret; 615 616 oldcancel = _thr_cancel_enter(curthread); 617 ret = __sys_writev(fd, iov, iovcnt); 618 _thr_cancel_leave(curthread, oldcancel); 619 620 return ret; 621 } 622