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 "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 95 extern int __creat(const char *, mode_t); 96 extern int __pselect(int, fd_set *, fd_set *, fd_set *, 97 const struct timespec *, const sigset_t *); 98 extern unsigned __sleep(unsigned int); 99 extern int __system(const char *); 100 extern int __tcdrain(int); 101 extern int __usleep(useconds_t); 102 extern pid_t __wait(int *); 103 extern pid_t __waitpid(pid_t, int *, int); 104 extern int __sys_aio_suspend(const struct aiocb * const[], int, 105 const struct timespec *); 106 extern int __sys_accept(int, struct sockaddr *, socklen_t *); 107 extern int __sys_connect(int, const struct sockaddr *, socklen_t); 108 extern int __sys_fsync(int); 109 extern int __sys_msync(void *, size_t, int); 110 extern int __sys_poll(struct pollfd *, unsigned, int); 111 extern ssize_t __sys_recv(int, void *, size_t, int); 112 extern ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 113 extern ssize_t __sys_recvmsg(int, struct msghdr *, int); 114 extern int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 115 extern int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 116 off_t *, int); 117 extern ssize_t __sys_sendmsg(int, const struct msghdr *, int); 118 extern ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 119 extern ssize_t __sys_readv(int, const struct iovec *, int); 120 extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 121 extern ssize_t __sys_writev(int, const struct iovec *, int); 122 123 int ___creat(const char *, mode_t); 124 int ___pselect(int, fd_set *, fd_set *, fd_set *, 125 const struct timespec *, const sigset_t *); 126 unsigned ___sleep(unsigned); 127 int ___system(const char *); 128 int ___tcdrain(int); 129 int ___usleep(useconds_t useconds); 130 pid_t ___wait(int *); 131 pid_t ___waitpid(pid_t, int *, int); 132 int __accept(int, struct sockaddr *, socklen_t *); 133 int __aio_suspend(const struct aiocb * const iocbs[], int, 134 const struct timespec *); 135 int __close(int); 136 int __connect(int, const struct sockaddr *, socklen_t); 137 int __fcntl(int, int,...); 138 int __fsync(int); 139 int __msync(void *, size_t, int); 140 int __nanosleep(const struct timespec *, struct timespec *); 141 int __open(const char *, int,...); 142 int __poll(struct pollfd *, unsigned int, int); 143 ssize_t __read(int, void *buf, size_t); 144 ssize_t __readv(int, const struct iovec *, int); 145 ssize_t __recvfrom(int, void *, size_t, int f, struct sockaddr *, socklen_t *); 146 ssize_t __recvmsg(int, struct msghdr *, int); 147 int __select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 148 ssize_t __sendmsg(int, const struct msghdr *, int); 149 ssize_t __sendto(int, const void *, size_t, int, 150 const struct sockaddr *, socklen_t); 151 pid_t __wait3(int *, int, struct rusage *); 152 pid_t __wait4(pid_t, int *, int, struct rusage *); 153 ssize_t __write(int, const void *, size_t); 154 ssize_t __writev(int, const struct iovec *, int); 155 int _vfork(void); 156 157 __weak_reference(__accept, accept); 158 159 int 160 __accept(int s, struct sockaddr *addr, socklen_t *addrlen) 161 { 162 struct pthread *curthread; 163 int oldcancel; 164 int ret; 165 166 curthread = _get_curthread(); 167 oldcancel = _thr_cancel_enter(curthread); 168 ret = __sys_accept(s, addr, addrlen); 169 _thr_cancel_leave(curthread, oldcancel); 170 171 return (ret); 172 } 173 174 __weak_reference(__aio_suspend, aio_suspend); 175 176 int 177 __aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 178 timespec *timeout) 179 { 180 struct pthread *curthread = _get_curthread(); 181 int oldcancel; 182 int ret; 183 184 oldcancel = _thr_cancel_enter(curthread); 185 ret = __sys_aio_suspend(iocbs, niocb, timeout); 186 _thr_cancel_leave(curthread, oldcancel); 187 188 return (ret); 189 } 190 191 __weak_reference(__close, close); 192 193 int 194 __close(int fd) 195 { 196 struct pthread *curthread = _get_curthread(); 197 int oldcancel; 198 int ret; 199 200 oldcancel = _thr_cancel_enter(curthread); 201 ret = __sys_close(fd); 202 _thr_cancel_leave(curthread, oldcancel); 203 204 return (ret); 205 } 206 207 __weak_reference(__connect, connect); 208 209 int 210 __connect(int fd, const struct sockaddr *name, socklen_t namelen) 211 { 212 struct pthread *curthread = _get_curthread(); 213 int oldcancel; 214 int ret; 215 216 oldcancel = _thr_cancel_enter(curthread); 217 ret = __sys_connect(fd, name, namelen); 218 _thr_cancel_leave(curthread, oldcancel); 219 220 return (ret); 221 } 222 223 __weak_reference(___creat, creat); 224 225 int 226 ___creat(const char *path, mode_t mode) 227 { 228 struct pthread *curthread = _get_curthread(); 229 int oldcancel; 230 int ret; 231 232 oldcancel = _thr_cancel_enter(curthread); 233 ret = __creat(path, mode); 234 _thr_cancel_leave(curthread, oldcancel); 235 236 return ret; 237 } 238 239 __weak_reference(__fcntl, fcntl); 240 241 int 242 __fcntl(int fd, int cmd,...) 243 { 244 struct pthread *curthread = _get_curthread(); 245 int oldcancel; 246 int ret; 247 va_list ap; 248 249 oldcancel = _thr_cancel_enter(curthread); 250 251 va_start(ap, cmd); 252 switch (cmd) { 253 case F_DUPFD: 254 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 255 break; 256 case F_SETFD: 257 case F_SETFL: 258 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 259 break; 260 case F_GETFD: 261 case F_GETFL: 262 ret = __sys_fcntl(fd, cmd); 263 break; 264 default: 265 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 266 } 267 va_end(ap); 268 269 _thr_cancel_leave(curthread, oldcancel); 270 271 return (ret); 272 } 273 274 __weak_reference(__fsync, fsync); 275 276 int 277 __fsync(int fd) 278 { 279 struct pthread *curthread = _get_curthread(); 280 int oldcancel; 281 int ret; 282 283 oldcancel = _thr_cancel_enter(curthread); 284 ret = __sys_fsync(fd); 285 _thr_cancel_leave(curthread, oldcancel); 286 287 return (ret); 288 } 289 290 __weak_reference(__msync, msync); 291 292 int 293 __msync(void *addr, size_t len, int flags) 294 { 295 struct pthread *curthread = _get_curthread(); 296 int oldcancel; 297 int ret; 298 299 oldcancel = _thr_cancel_enter(curthread); 300 ret = __sys_msync(addr, len, flags); 301 _thr_cancel_leave(curthread, oldcancel); 302 303 return ret; 304 } 305 306 __weak_reference(__nanosleep, nanosleep); 307 308 int 309 __nanosleep(const struct timespec *time_to_sleep, 310 struct timespec *time_remaining) 311 { 312 struct pthread *curthread = _get_curthread(); 313 int oldcancel; 314 int ret; 315 316 oldcancel = _thr_cancel_enter(curthread); 317 ret = __sys_nanosleep(time_to_sleep, time_remaining); 318 _thr_cancel_leave(curthread, oldcancel); 319 320 return (ret); 321 } 322 323 __weak_reference(__open, open); 324 325 int 326 __open(const char *path, int flags,...) 327 { 328 struct pthread *curthread = _get_curthread(); 329 int oldcancel; 330 int ret; 331 int mode = 0; 332 va_list ap; 333 334 oldcancel = _thr_cancel_enter(curthread); 335 336 /* Check if the file is being created: */ 337 if (flags & O_CREAT) { 338 /* Get the creation mode: */ 339 va_start(ap, flags); 340 mode = va_arg(ap, int); 341 va_end(ap); 342 } 343 344 ret = __sys_open(path, flags, mode); 345 346 _thr_cancel_leave(curthread, oldcancel); 347 348 return ret; 349 } 350 351 __weak_reference(__poll, poll); 352 353 int 354 __poll(struct pollfd *fds, unsigned int nfds, int timeout) 355 { 356 struct pthread *curthread = _get_curthread(); 357 int oldcancel; 358 int ret; 359 360 oldcancel = _thr_cancel_enter(curthread); 361 ret = __sys_poll(fds, nfds, timeout); 362 _thr_cancel_leave(curthread, oldcancel); 363 364 return ret; 365 } 366 367 __weak_reference(___pselect, pselect); 368 369 int 370 ___pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 371 const struct timespec *timo, const sigset_t *mask) 372 { 373 struct pthread *curthread = _get_curthread(); 374 int oldcancel; 375 int ret; 376 377 oldcancel = _thr_cancel_enter(curthread); 378 ret = __pselect(count, rfds, wfds, efds, timo, mask); 379 _thr_cancel_leave(curthread, oldcancel); 380 381 return (ret); 382 } 383 384 __weak_reference(__read, read); 385 386 ssize_t 387 __read(int fd, void *buf, size_t nbytes) 388 { 389 struct pthread *curthread = _get_curthread(); 390 int oldcancel; 391 ssize_t ret; 392 393 oldcancel = _thr_cancel_enter(curthread); 394 ret = __sys_read(fd, buf, nbytes); 395 _thr_cancel_leave(curthread, oldcancel); 396 397 return ret; 398 } 399 400 __weak_reference(__readv, readv); 401 402 ssize_t 403 __readv(int fd, const struct iovec *iov, int iovcnt) 404 { 405 struct pthread *curthread = _get_curthread(); 406 int oldcancel; 407 ssize_t ret; 408 409 oldcancel = _thr_cancel_enter(curthread); 410 ret = __sys_readv(fd, iov, iovcnt); 411 _thr_cancel_leave(curthread, oldcancel); 412 413 return ret; 414 } 415 416 __weak_reference(__recvfrom, recvfrom); 417 418 ssize_t 419 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 420 socklen_t *fl) 421 { 422 struct pthread *curthread = _get_curthread(); 423 int oldcancel; 424 ssize_t ret; 425 426 oldcancel = _thr_cancel_enter(curthread); 427 ret = __sys_recvfrom(s, b, l, f, from, fl); 428 _thr_cancel_leave(curthread, oldcancel); 429 return (ret); 430 } 431 432 __weak_reference(__recvmsg, recvmsg); 433 434 ssize_t 435 __recvmsg(int s, struct msghdr *m, int f) 436 { 437 struct pthread *curthread = _get_curthread(); 438 ssize_t ret; 439 int oldcancel; 440 441 oldcancel = _thr_cancel_enter(curthread); 442 ret = __sys_recvmsg(s, m, f); 443 _thr_cancel_leave(curthread, oldcancel); 444 return (ret); 445 } 446 447 __weak_reference(__select, select); 448 449 int 450 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 451 struct timeval *timeout) 452 { 453 struct pthread *curthread = _get_curthread(); 454 int oldcancel; 455 int ret; 456 457 oldcancel = _thr_cancel_enter(curthread); 458 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 459 _thr_cancel_leave(curthread, oldcancel); 460 return ret; 461 } 462 463 __weak_reference(__sendmsg, sendmsg); 464 465 ssize_t 466 __sendmsg(int s, const 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_sendmsg(s, m, f); 474 _thr_cancel_leave(curthread, oldcancel); 475 return (ret); 476 } 477 478 __weak_reference(__sendto, sendto); 479 480 ssize_t 481 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 482 socklen_t tl) 483 { 484 struct pthread *curthread = _get_curthread(); 485 ssize_t ret; 486 int oldcancel; 487 488 oldcancel = _thr_cancel_enter(curthread); 489 ret = __sys_sendto(s, m, l, f, t, tl); 490 _thr_cancel_leave(curthread, oldcancel); 491 return (ret); 492 } 493 494 __weak_reference(___sleep, sleep); 495 496 unsigned int 497 ___sleep(unsigned int seconds) 498 { 499 struct pthread *curthread = _get_curthread(); 500 int oldcancel; 501 unsigned int ret; 502 503 oldcancel = _thr_cancel_enter(curthread); 504 ret = __sleep(seconds); 505 _thr_cancel_leave(curthread, oldcancel); 506 507 return (ret); 508 } 509 510 __weak_reference(___system, system); 511 512 int 513 ___system(const char *string) 514 { 515 struct pthread *curthread = _get_curthread(); 516 int oldcancel; 517 int ret; 518 519 oldcancel = _thr_cancel_enter(curthread); 520 ret = __system(string); 521 _thr_cancel_leave(curthread, oldcancel); 522 523 return ret; 524 } 525 526 __weak_reference(___tcdrain, tcdrain); 527 528 int 529 ___tcdrain(int fd) 530 { 531 struct pthread *curthread = _get_curthread(); 532 int oldcancel; 533 int ret; 534 535 oldcancel = _thr_cancel_enter(curthread); 536 ret = __tcdrain(fd); 537 _thr_cancel_leave(curthread, oldcancel); 538 539 return (ret); 540 } 541 542 __weak_reference(___usleep, usleep); 543 544 int 545 ___usleep(useconds_t useconds) 546 { 547 struct pthread *curthread = _get_curthread(); 548 int oldcancel; 549 int ret; 550 551 oldcancel = _thr_cancel_enter(curthread); 552 ret = __usleep(useconds); 553 _thr_cancel_leave(curthread, oldcancel); 554 555 return (ret); 556 } 557 558 __weak_reference(_vfork, vfork); 559 560 int 561 _vfork(void) 562 { 563 return (fork()); 564 } 565 566 __weak_reference(___wait, wait); 567 568 pid_t 569 ___wait(int *istat) 570 { 571 struct pthread *curthread = _get_curthread(); 572 int oldcancel; 573 pid_t ret; 574 575 oldcancel = _thr_cancel_enter(curthread); 576 ret = __wait(istat); 577 _thr_cancel_leave(curthread, oldcancel); 578 579 return ret; 580 } 581 582 __weak_reference(__wait3, wait3); 583 584 pid_t 585 __wait3(int *status, int options, struct rusage *rusage) 586 { 587 struct pthread *curthread = _get_curthread(); 588 int oldcancel; 589 pid_t ret; 590 591 oldcancel = _thr_cancel_enter(curthread); 592 ret = _wait4(WAIT_ANY, status, options, rusage); 593 _thr_cancel_leave(curthread, oldcancel); 594 595 return (ret); 596 } 597 598 __weak_reference(__wait4, wait4); 599 600 pid_t 601 __wait4(pid_t pid, int *status, int options, struct rusage *rusage) 602 { 603 struct pthread *curthread = _get_curthread(); 604 int oldcancel; 605 pid_t ret; 606 607 oldcancel = _thr_cancel_enter(curthread); 608 ret = __sys_wait4(pid, status, options, rusage); 609 _thr_cancel_leave(curthread, oldcancel); 610 611 return ret; 612 } 613 614 __weak_reference(___waitpid, waitpid); 615 616 pid_t 617 ___waitpid(pid_t wpid, int *status, int options) 618 { 619 struct pthread *curthread = _get_curthread(); 620 int oldcancel; 621 pid_t ret; 622 623 oldcancel = _thr_cancel_enter(curthread); 624 ret = __waitpid(wpid, status, options); 625 _thr_cancel_leave(curthread, oldcancel); 626 627 return ret; 628 } 629 630 __weak_reference(__write, write); 631 632 ssize_t 633 __write(int fd, const void *buf, size_t nbytes) 634 { 635 struct pthread *curthread = _get_curthread(); 636 int oldcancel; 637 ssize_t ret; 638 639 oldcancel = _thr_cancel_enter(curthread); 640 ret = __sys_write(fd, buf, nbytes); 641 _thr_cancel_leave(curthread, oldcancel); 642 643 return ret; 644 } 645 646 __weak_reference(__writev, writev); 647 648 ssize_t 649 __writev(int fd, const struct iovec *iov, int iovcnt) 650 { 651 struct pthread *curthread = _get_curthread(); 652 int oldcancel; 653 ssize_t ret; 654 655 oldcancel = _thr_cancel_enter(curthread); 656 ret = __sys_writev(fd, iov, iovcnt); 657 _thr_cancel_leave(curthread, oldcancel); 658 659 return ret; 660 } 661