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 * $DragonFly: src/lib/libthread_xu/thread/thr_syscalls.c,v 1.4 2005/10/25 12:14:52 davidxu Exp $ 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 78 #include <machine/tls.h> 79 80 #include <aio.h> 81 #include <dirent.h> 82 #include <errno.h> 83 #include <fcntl.h> 84 #include <poll.h> 85 #include <signal.h> 86 #include <stdarg.h> 87 #include <stdio.h> 88 #include <stdlib.h> 89 #include <string.h> 90 #include <termios.h> 91 #include <unistd.h> 92 #include <pthread.h> 93 94 #include "thr_private.h" 95 96 extern int __creat(const char *, mode_t); 97 extern int __pause(void); 98 extern int __pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 99 const struct timespec *timo, const sigset_t *mask); 100 extern unsigned int __sleep(unsigned int); 101 extern int __system(const char *); 102 extern int __tcdrain(int); 103 extern int __usleep(unsigned int); 104 extern pid_t __wait(int *); 105 extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 106 extern pid_t __waitpid(pid_t, int *, int); 107 108 __weak_reference(__accept, accept); 109 int 110 __accept(int s, struct sockaddr *addr, socklen_t *addrlen) 111 { 112 struct pthread *curthread; 113 int oldcancel; 114 int ret; 115 116 curthread = tls_get_curthread(); 117 oldcancel = _thr_cancel_enter(curthread); 118 ret = __sys_accept(s, addr, addrlen); 119 _thr_cancel_leave(curthread, oldcancel); 120 121 return (ret); 122 } 123 124 __weak_reference(_aio_suspend, aio_suspend); 125 126 int 127 _aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 128 timespec *timeout) 129 { 130 struct pthread *curthread = tls_get_curthread(); 131 int oldcancel; 132 int ret; 133 134 oldcancel = _thr_cancel_enter(curthread); 135 ret = __sys_aio_suspend(iocbs, niocb, timeout); 136 _thr_cancel_leave(curthread, oldcancel); 137 138 return (ret); 139 } 140 141 __weak_reference(__close, close); 142 143 int 144 __close(int fd) 145 { 146 struct pthread *curthread = tls_get_curthread(); 147 int oldcancel; 148 int ret; 149 150 oldcancel = _thr_cancel_enter(curthread); 151 ret = __sys_close(fd); 152 _thr_cancel_leave(curthread, oldcancel); 153 154 return (ret); 155 } 156 157 __weak_reference(__connect, connect); 158 159 int 160 __connect(int fd, const struct sockaddr *name, socklen_t namelen) 161 { 162 struct pthread *curthread = tls_get_curthread(); 163 int oldcancel; 164 int ret; 165 166 curthread = tls_get_curthread(); 167 oldcancel = _thr_cancel_enter(curthread); 168 ret = __sys_connect(fd, name, namelen); 169 _thr_cancel_leave(curthread, oldcancel); 170 171 return (ret); 172 } 173 174 __weak_reference(___creat, creat); 175 176 int 177 ___creat(const char *path, mode_t mode) 178 { 179 struct pthread *curthread = tls_get_curthread(); 180 int oldcancel; 181 int ret; 182 183 oldcancel = _thr_cancel_enter(curthread); 184 ret = __creat(path, mode); 185 _thr_cancel_leave(curthread, oldcancel); 186 187 return ret; 188 } 189 190 __weak_reference(__fcntl, fcntl); 191 192 int 193 __fcntl(int fd, int cmd,...) 194 { 195 struct pthread *curthread = tls_get_curthread(); 196 int oldcancel; 197 int ret; 198 va_list ap; 199 200 oldcancel = _thr_cancel_enter(curthread); 201 202 va_start(ap, cmd); 203 switch (cmd) { 204 case F_DUPFD: 205 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 206 break; 207 case F_SETFD: 208 case F_SETFL: 209 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 210 break; 211 case F_GETFD: 212 case F_GETFL: 213 ret = __sys_fcntl(fd, cmd); 214 break; 215 default: 216 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 217 } 218 va_end(ap); 219 220 _thr_cancel_leave(curthread, oldcancel); 221 222 return (ret); 223 } 224 225 __weak_reference(__fsync, fsync); 226 227 int 228 __fsync(int fd) 229 { 230 struct pthread *curthread = tls_get_curthread(); 231 int oldcancel; 232 int ret; 233 234 oldcancel = _thr_cancel_enter(curthread); 235 ret = __sys_fsync(fd); 236 _thr_cancel_leave(curthread, oldcancel); 237 238 return (ret); 239 } 240 241 __weak_reference(__msync, msync); 242 243 int 244 __msync(void *addr, size_t len, int flags) 245 { 246 struct pthread *curthread = tls_get_curthread(); 247 int oldcancel; 248 int ret; 249 250 oldcancel = _thr_cancel_enter(curthread); 251 ret = __sys_msync(addr, len, flags); 252 _thr_cancel_leave(curthread, oldcancel); 253 254 return ret; 255 } 256 257 __weak_reference(__nanosleep, nanosleep); 258 259 int 260 __nanosleep(const struct timespec *time_to_sleep, 261 struct timespec *time_remaining) 262 { 263 struct pthread *curthread = tls_get_curthread(); 264 int oldcancel; 265 int ret; 266 267 oldcancel = _thr_cancel_enter(curthread); 268 ret = __sys_nanosleep(time_to_sleep, time_remaining); 269 _thr_cancel_leave(curthread, oldcancel); 270 271 return (ret); 272 } 273 274 __weak_reference(___open, open); 275 276 int 277 ___open(const char *path, int flags,...) 278 { 279 struct pthread *curthread = tls_get_curthread(); 280 int oldcancel; 281 int ret; 282 int mode = 0; 283 va_list ap; 284 285 oldcancel = _thr_cancel_enter(curthread); 286 287 /* Check if the file is being created: */ 288 if (flags & O_CREAT) { 289 /* Get the creation mode: */ 290 va_start(ap, flags); 291 mode = va_arg(ap, int); 292 va_end(ap); 293 } 294 295 ret = __sys_open(path, flags, mode); 296 297 _thr_cancel_leave(curthread, oldcancel); 298 299 return ret; 300 } 301 302 __weak_reference(_pause, pause); 303 304 int 305 _pause(void) 306 { 307 struct pthread *curthread = tls_get_curthread(); 308 int oldcancel; 309 int ret; 310 311 oldcancel = _thr_cancel_enter(curthread); 312 ret = __pause(); 313 _thr_cancel_leave(curthread, oldcancel); 314 315 return ret; 316 } 317 318 __weak_reference(__poll, poll); 319 320 int 321 __poll(struct pollfd *fds, unsigned int nfds, int timeout) 322 { 323 struct pthread *curthread = tls_get_curthread(); 324 int oldcancel; 325 int ret; 326 327 oldcancel = _thr_cancel_enter(curthread); 328 ret = __sys_poll(fds, nfds, timeout); 329 _thr_cancel_leave(curthread, oldcancel); 330 331 return ret; 332 } 333 334 #if 0 335 __weak_reference(_pselect, pselect); 336 337 int 338 _pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 339 const struct timespec *timo, const sigset_t *mask) 340 { 341 struct pthread *curthread = tls_get_curthread(); 342 int oldcancel; 343 int ret; 344 345 oldcancel = _thr_cancel_enter(curthread); 346 ret = __pselect(count, rfds, wfds, efds, timo, mask); 347 _thr_cancel_leave(curthread, oldcancel); 348 349 return (ret); 350 } 351 #endif 352 353 __weak_reference(_raise, raise); 354 355 int 356 _raise(int sig) 357 { 358 int ret; 359 360 if (!_thr_isthreaded()) 361 ret = kill(getpid(), sig); 362 else { 363 ret = pthread_kill(pthread_self(), sig); 364 if (ret != 0) { 365 errno = ret; 366 ret = -1; 367 } 368 } 369 return (ret); 370 } 371 372 __weak_reference(__read, read); 373 374 ssize_t 375 __read(int fd, void *buf, size_t nbytes) 376 { 377 struct pthread *curthread = tls_get_curthread(); 378 int oldcancel; 379 ssize_t ret; 380 381 oldcancel = _thr_cancel_enter(curthread); 382 ret = __sys_read(fd, buf, nbytes); 383 _thr_cancel_leave(curthread, oldcancel); 384 385 return ret; 386 } 387 388 __weak_reference(__readv, readv); 389 390 ssize_t 391 __readv(int fd, const struct iovec *iov, int iovcnt) 392 { 393 struct pthread *curthread = tls_get_curthread(); 394 int oldcancel; 395 ssize_t ret; 396 397 oldcancel = _thr_cancel_enter(curthread); 398 ret = __sys_readv(fd, iov, iovcnt); 399 _thr_cancel_leave(curthread, oldcancel); 400 401 return ret; 402 } 403 404 __weak_reference(__recvfrom, recvfrom); 405 406 ssize_t 407 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 408 socklen_t *fl) 409 { 410 struct pthread *curthread = tls_get_curthread(); 411 int oldcancel; 412 ssize_t ret; 413 414 oldcancel = _thr_cancel_enter(curthread); 415 ret = __sys_recvfrom(s, b, l, f, from, fl); 416 _thr_cancel_leave(curthread, oldcancel); 417 return (ret); 418 } 419 420 __weak_reference(__recvmsg, recvmsg); 421 422 ssize_t 423 __recvmsg(int s, struct msghdr *m, int f) 424 { 425 struct pthread *curthread = tls_get_curthread(); 426 ssize_t ret; 427 int oldcancel; 428 429 oldcancel = _thr_cancel_enter(curthread); 430 ret = __sys_recvmsg(s, m, f); 431 _thr_cancel_leave(curthread, oldcancel); 432 return (ret); 433 } 434 435 __weak_reference(__select, select); 436 437 int 438 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 439 struct timeval *timeout) 440 { 441 struct pthread *curthread = tls_get_curthread(); 442 int oldcancel; 443 int ret; 444 445 oldcancel = _thr_cancel_enter(curthread); 446 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 447 _thr_cancel_leave(curthread, oldcancel); 448 return ret; 449 } 450 451 __weak_reference(__sendmsg, sendmsg); 452 453 ssize_t 454 __sendmsg(int s, const struct msghdr *m, int f) 455 { 456 struct pthread *curthread = tls_get_curthread(); 457 ssize_t ret; 458 int oldcancel; 459 460 oldcancel = _thr_cancel_enter(curthread); 461 ret = __sys_sendmsg(s, m, f); 462 _thr_cancel_leave(curthread, oldcancel); 463 return (ret); 464 } 465 466 __weak_reference(__sendto, sendto); 467 468 ssize_t 469 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 470 socklen_t tl) 471 { 472 struct pthread *curthread = tls_get_curthread(); 473 ssize_t ret; 474 int oldcancel; 475 476 oldcancel = _thr_cancel_enter(curthread); 477 ret = __sys_sendto(s, m, l, f, t, tl); 478 _thr_cancel_leave(curthread, oldcancel); 479 return (ret); 480 } 481 482 unsigned int 483 _sleep(unsigned int seconds) 484 { 485 struct pthread *curthread = tls_get_curthread(); 486 int oldcancel; 487 unsigned int ret; 488 489 oldcancel = _thr_cancel_enter(curthread); 490 ret = __sleep(seconds); 491 _thr_cancel_leave(curthread, oldcancel); 492 493 return (ret); 494 } 495 496 __weak_reference(_system, system); 497 498 int 499 _system(const char *string) 500 { 501 struct pthread *curthread = tls_get_curthread(); 502 int oldcancel; 503 int ret; 504 505 oldcancel = _thr_cancel_enter(curthread); 506 ret = __system(string); 507 _thr_cancel_leave(curthread, oldcancel); 508 509 return ret; 510 } 511 512 __weak_reference(_tcdrain, tcdrain); 513 514 int 515 _tcdrain(int fd) 516 { 517 struct pthread *curthread = tls_get_curthread(); 518 int oldcancel; 519 int ret; 520 521 oldcancel = _thr_cancel_enter(curthread); 522 ret = __tcdrain(fd); 523 _thr_cancel_leave(curthread, oldcancel); 524 525 return (ret); 526 } 527 528 __weak_reference(___usleep, usleep); 529 530 int 531 ___usleep(unsigned int useconds) 532 { 533 struct pthread *curthread = tls_get_curthread(); 534 int oldcancel; 535 int ret; 536 537 oldcancel = _thr_cancel_enter(curthread); 538 ret = __usleep(useconds); 539 _thr_cancel_leave(curthread, oldcancel); 540 541 return (ret); 542 } 543 544 __weak_reference(_vfork, vfork); 545 546 int 547 _vfork(void) 548 { 549 return (fork()); 550 } 551 552 __weak_reference(_wait, wait); 553 554 pid_t 555 _wait(int *istat) 556 { 557 struct pthread *curthread = tls_get_curthread(); 558 int oldcancel; 559 pid_t ret; 560 561 oldcancel = _thr_cancel_enter(curthread); 562 ret = __wait(istat); 563 _thr_cancel_leave(curthread, oldcancel); 564 565 return ret; 566 } 567 568 __weak_reference(__wait4, wait4); 569 570 pid_t 571 __wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 572 { 573 struct pthread *curthread = tls_get_curthread(); 574 int oldcancel; 575 pid_t ret; 576 577 oldcancel = _thr_cancel_enter(curthread); 578 ret = __sys_wait4(pid, istat, options, rusage); 579 _thr_cancel_leave(curthread, oldcancel); 580 581 return ret; 582 } 583 584 __weak_reference(_waitpid, waitpid); 585 586 pid_t 587 _waitpid(pid_t wpid, int *status, int options) 588 { 589 struct pthread *curthread = tls_get_curthread(); 590 int oldcancel; 591 pid_t ret; 592 593 oldcancel = _thr_cancel_enter(curthread); 594 ret = __waitpid(wpid, status, options); 595 _thr_cancel_leave(curthread, oldcancel); 596 597 return ret; 598 } 599 600 __weak_reference(__write, write); 601 602 ssize_t 603 __write(int fd, const void *buf, size_t nbytes) 604 { 605 struct pthread *curthread = tls_get_curthread(); 606 int oldcancel; 607 ssize_t ret; 608 609 oldcancel = _thr_cancel_enter(curthread); 610 ret = __sys_write(fd, buf, nbytes); 611 _thr_cancel_leave(curthread, oldcancel); 612 613 return ret; 614 } 615 616 __weak_reference(__writev, writev); 617 618 ssize_t 619 __writev(int fd, const struct iovec *iov, int iovcnt) 620 { 621 struct pthread *curthread = tls_get_curthread(); 622 int oldcancel; 623 ssize_t ret; 624 625 oldcancel = _thr_cancel_enter(curthread); 626 ret = __sys_writev(fd, iov, iovcnt); 627 _thr_cancel_leave(curthread, oldcancel); 628 629 return ret; 630 } 631