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 32 /* 33 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the author nor the names of any co-contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 */ 61 62 63 #include "namespace.h" 64 #include <sys/types.h> 65 #include <sys/mman.h> 66 #include <sys/param.h> 67 #include <sys/select.h> 68 #include <sys/signalvar.h> 69 #include <sys/socket.h> 70 #include <sys/stat.h> 71 #include <sys/time.h> 72 #include <sys/uio.h> 73 #include <sys/wait.h> 74 #include <machine/tls.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 92 extern int __creat(const char *, mode_t); 93 extern int __pause(void); 94 extern int __sys_pselect(int, fd_set *, fd_set *, fd_set *, 95 const struct timespec *, const sigset_t *); 96 extern unsigned __sleep(unsigned int); 97 extern int __system(const char *); 98 extern int __tcdrain(int); 99 extern int __usleep(useconds_t); 100 extern pid_t __wait(int *); 101 extern pid_t __waitpid(pid_t, int *, int); 102 extern int __sys_aio_suspend(const struct aiocb * const[], int, 103 const struct timespec *); 104 extern int __sys_accept(int, struct sockaddr *, socklen_t *); 105 extern int __sys_connect(int, const struct sockaddr *, socklen_t); 106 extern int __sys_fsync(int); 107 extern int __sys_fdatasync(int); 108 extern int __sys_msync(void *, size_t, int); 109 extern int __sys_poll(struct pollfd *, unsigned, int); 110 extern int __sys_ppoll(struct pollfd *, unsigned, const struct timespec *, 111 const sigset_t *); 112 extern ssize_t __sys_recv(int, void *, size_t, int); 113 extern ssize_t __sys_recvfrom(int, void *, size_t, int, struct sockaddr *, socklen_t *); 114 extern ssize_t __sys_recvmsg(int, struct msghdr *, int); 115 extern int __sys_select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 116 extern int __sys_sendfile(int, int, off_t, size_t, struct sf_hdtr *, 117 off_t *, int); 118 extern ssize_t __sys_sendmsg(int, const struct msghdr *, int); 119 extern ssize_t __sys_sendto(int, const void *,size_t, int, const struct sockaddr *, socklen_t); 120 extern ssize_t __sys_readv(int, const struct iovec *, int); 121 extern pid_t __sys_wait4(pid_t, int *, int, struct rusage *); 122 extern ssize_t __sys_writev(int, const struct iovec *, int); 123 124 int ___creat(const char *, mode_t); 125 int ___usleep(useconds_t); 126 int __accept(int, struct sockaddr *, socklen_t *); 127 int __close(int); 128 int __connect(int, const struct sockaddr *, socklen_t); 129 int __fcntl(int, int,...); 130 int __fsync(int); 131 int __fdatasync(int); 132 int __msync(void *, size_t, int); 133 int __nanosleep(const struct timespec *, struct timespec *); 134 int __clock_nanosleep(clock_t, int, const struct timespec *, 135 struct timespec *); 136 int __open(const char *, int,...); 137 int __openat(int fd, const char *, int,...); 138 int __poll(struct pollfd *, unsigned int, int); 139 int __ppoll(struct pollfd *, unsigned int, const struct timespec *, 140 const sigset_t *); 141 ssize_t __read(int, void *buf, size_t); 142 ssize_t __readv(int, const struct iovec *, int); 143 ssize_t __recvfrom(int, void *, size_t, int f, struct sockaddr *, socklen_t *); 144 ssize_t __recvmsg(int, struct msghdr *, int); 145 int __select(int, fd_set *, fd_set *, fd_set *, struct timeval *); 146 ssize_t __sendmsg(int, const struct msghdr *, int); 147 ssize_t __sendto(int, const void *, size_t, int, 148 const struct sockaddr *, socklen_t); 149 pid_t __wait4(pid_t, int *, int, struct rusage *); 150 ssize_t __write(int, const void *, size_t); 151 ssize_t __writev(int, const struct iovec *, int); 152 int _aio_suspend(const struct aiocb * const iocbs[], int, 153 const struct timespec *); 154 int _pause(void); 155 int __pselect(int, fd_set *, fd_set *, fd_set *, 156 const struct timespec *, const sigset_t *); 157 int _raise(int); 158 unsigned _sleep(unsigned); 159 int _system(const char *); 160 int _tcdrain(int); 161 #if 0 162 int _vfork(void); 163 #endif 164 pid_t _wait(int *); 165 166 int 167 __accept(int s, struct sockaddr *addr, socklen_t *addrlen) 168 { 169 pthread_t curthread; 170 int oldcancel; 171 int ret; 172 173 curthread = tls_get_curthread(); 174 oldcancel = _thr_cancel_enter(curthread); 175 ret = __sys_accept(s, addr, addrlen); 176 _thr_cancel_leave(curthread, oldcancel); 177 178 return (ret); 179 } 180 181 __strong_reference(__accept, accept); 182 183 int 184 _aio_suspend(const struct aiocb * const iocbs[], int niocb, const struct 185 timespec *timeout) 186 { 187 pthread_t curthread = tls_get_curthread(); 188 int oldcancel; 189 int ret; 190 191 oldcancel = _thr_cancel_enter(curthread); 192 ret = __sys_aio_suspend(iocbs, niocb, timeout); 193 _thr_cancel_leave(curthread, oldcancel); 194 195 return (ret); 196 } 197 198 __strong_reference(_aio_suspend, aio_suspend); 199 200 int 201 __close(int fd) 202 { 203 pthread_t curthread = tls_get_curthread(); 204 int oldcancel; 205 int ret; 206 207 oldcancel = _thr_cancel_enter(curthread); 208 ret = __sys_close(fd); 209 _thr_cancel_leave(curthread, oldcancel); 210 211 return (ret); 212 } 213 214 __strong_reference(__close, close); 215 216 int 217 __connect(int fd, const struct sockaddr *name, socklen_t namelen) 218 { 219 pthread_t curthread = tls_get_curthread(); 220 int oldcancel; 221 int ret; 222 223 oldcancel = _thr_cancel_enter(curthread); 224 ret = __sys_connect(fd, name, namelen); 225 _thr_cancel_leave(curthread, oldcancel); 226 227 return (ret); 228 } 229 230 __strong_reference(__connect, connect); 231 232 int 233 ___creat(const char *path, mode_t mode) 234 { 235 pthread_t curthread = tls_get_curthread(); 236 int oldcancel; 237 int ret; 238 239 oldcancel = _thr_cancel_enter(curthread); 240 ret = __creat(path, mode); 241 _thr_cancel_leave(curthread, oldcancel); 242 243 return ret; 244 } 245 246 __strong_reference(___creat, creat); 247 248 int 249 __fcntl(int fd, int cmd,...) 250 { 251 pthread_t curthread = tls_get_curthread(); 252 int oldcancel; 253 int ret; 254 va_list ap; 255 256 oldcancel = _thr_cancel_enter(curthread); 257 258 va_start(ap, cmd); 259 switch (cmd) { 260 case F_DUPFD: 261 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 262 break; 263 case F_SETFD: 264 case F_SETFL: 265 ret = __sys_fcntl(fd, cmd, va_arg(ap, int)); 266 break; 267 case F_GETFD: 268 case F_GETFL: 269 ret = __sys_fcntl(fd, cmd); 270 break; 271 default: 272 ret = __sys_fcntl(fd, cmd, va_arg(ap, void *)); 273 } 274 va_end(ap); 275 276 _thr_cancel_leave(curthread, oldcancel); 277 278 return (ret); 279 } 280 281 __strong_reference(__fcntl, fcntl); 282 283 int 284 __fsync(int fd) 285 { 286 pthread_t curthread = tls_get_curthread(); 287 int oldcancel; 288 int ret; 289 290 oldcancel = _thr_cancel_enter(curthread); 291 ret = __sys_fsync(fd); 292 _thr_cancel_leave(curthread, oldcancel); 293 294 return (ret); 295 } 296 297 __strong_reference(__fsync, fsync); 298 299 int 300 __fdatasync(int fd) 301 { 302 pthread_t curthread = tls_get_curthread(); 303 int oldcancel; 304 int ret; 305 306 oldcancel = _thr_cancel_enter(curthread); 307 ret = __sys_fdatasync(fd); 308 _thr_cancel_leave(curthread, oldcancel); 309 310 return (ret); 311 } 312 313 __strong_reference(__fdatasync, fdatasync); 314 315 int 316 __msync(void *addr, size_t len, int flags) 317 { 318 pthread_t curthread = tls_get_curthread(); 319 int oldcancel; 320 int ret; 321 322 oldcancel = _thr_cancel_enter(curthread); 323 ret = __sys_msync(addr, len, flags); 324 _thr_cancel_leave(curthread, oldcancel); 325 326 return ret; 327 } 328 329 __strong_reference(__msync, msync); 330 331 int 332 __nanosleep(const struct timespec *time_to_sleep, 333 struct timespec *time_remaining) 334 { 335 pthread_t curthread = tls_get_curthread(); 336 int oldcancel; 337 int ret; 338 339 oldcancel = _thr_cancel_enter(curthread); 340 ret = __sys_nanosleep(time_to_sleep, time_remaining); 341 _thr_cancel_leave(curthread, oldcancel); 342 343 return (ret); 344 } 345 346 __strong_reference(__nanosleep, nanosleep); 347 348 int 349 __clock_nanosleep(clock_t clock_id, int flags, 350 const struct timespec *time_to_sleep, struct timespec *time_remaining) 351 { 352 pthread_t curthread = tls_get_curthread(); 353 int oldcancel; 354 int ret; 355 356 oldcancel = _thr_cancel_enter(curthread); 357 ret = __sys_clock_nanosleep(clock_id, flags, time_to_sleep, 358 time_remaining); 359 _thr_cancel_leave(curthread, oldcancel); 360 361 return (ret); 362 } 363 364 __strong_reference(__clock_nanosleep, clock_nanosleep); 365 366 int 367 __open(const char *path, int flags,...) 368 { 369 pthread_t curthread = tls_get_curthread(); 370 int oldcancel; 371 int ret; 372 int mode = 0; 373 va_list ap; 374 375 oldcancel = _thr_cancel_enter(curthread); 376 377 /* Check if the file is being created: */ 378 if (flags & O_CREAT) { 379 /* Get the creation mode: */ 380 va_start(ap, flags); 381 mode = va_arg(ap, int); 382 va_end(ap); 383 } 384 385 ret = __sys_open(path, flags, mode); 386 387 _thr_cancel_leave(curthread, oldcancel); 388 389 return ret; 390 } 391 392 __strong_reference(__open, open); 393 394 int 395 __openat(int fd, const char *path, int flags,...) 396 { 397 pthread_t curthread = tls_get_curthread(); 398 int oldcancel; 399 int ret; 400 int mode = 0; 401 va_list ap; 402 403 oldcancel = _thr_cancel_enter(curthread); 404 405 /* Check if the file is being created: */ 406 if (flags & O_CREAT) { 407 /* Get the creation mode: */ 408 va_start(ap, flags); 409 mode = va_arg(ap, int); 410 va_end(ap); 411 } 412 413 ret = __sys_openat(fd, path, flags, mode); 414 415 _thr_cancel_leave(curthread, oldcancel); 416 417 return ret; 418 } 419 420 __strong_reference(__openat, openat); 421 422 int 423 _pause(void) 424 { 425 pthread_t curthread = tls_get_curthread(); 426 int oldcancel; 427 int ret; 428 429 oldcancel = _thr_cancel_enter(curthread); 430 ret = __pause(); 431 _thr_cancel_leave(curthread, oldcancel); 432 433 return ret; 434 } 435 436 __strong_reference(_pause, pause); 437 438 int 439 __poll(struct pollfd *fds, unsigned int nfds, int timeout) 440 { 441 pthread_t curthread = tls_get_curthread(); 442 int oldcancel; 443 int ret; 444 445 oldcancel = _thr_cancel_enter(curthread); 446 ret = __sys_poll(fds, nfds, timeout); 447 _thr_cancel_leave(curthread, oldcancel); 448 449 return ret; 450 } 451 452 __strong_reference(__poll, poll); 453 454 int 455 __ppoll(struct pollfd *fds, unsigned int nfds, const struct timespec *ts, 456 const sigset_t *mask) 457 { 458 pthread_t curthread = tls_get_curthread(); 459 int oldcancel; 460 int ret; 461 462 oldcancel = _thr_cancel_enter(curthread); 463 ret = __sys_ppoll(fds, nfds, ts, mask); 464 _thr_cancel_leave(curthread, oldcancel); 465 466 return ret; 467 } 468 469 __strong_reference(__ppoll, ppoll); 470 471 int 472 __pselect(int count, fd_set *rfds, fd_set *wfds, fd_set *efds, 473 const struct timespec *timo, const sigset_t *mask) 474 { 475 pthread_t curthread = tls_get_curthread(); 476 int oldcancel; 477 int ret; 478 479 oldcancel = _thr_cancel_enter(curthread); 480 ret = __sys_pselect(count, rfds, wfds, efds, timo, mask); 481 _thr_cancel_leave(curthread, oldcancel); 482 483 return (ret); 484 } 485 __strong_reference(__pselect, pselect); 486 487 488 int 489 _raise(int sig) 490 { 491 int ret; 492 493 if (!_thr_isthreaded()) 494 ret = kill(getpid(), sig); 495 else 496 ret = _thr_send_sig(tls_get_curthread(), sig); 497 return (ret); 498 } 499 500 __strong_reference(_raise, raise); 501 502 ssize_t 503 __read(int fd, void *buf, size_t nbytes) 504 { 505 pthread_t curthread = tls_get_curthread(); 506 int oldcancel; 507 ssize_t ret; 508 509 oldcancel = _thr_cancel_enter(curthread); 510 ret = __sys_read(fd, buf, nbytes); 511 _thr_cancel_leave(curthread, oldcancel); 512 return ret; 513 } 514 515 __strong_reference(__read, read); 516 517 ssize_t 518 __readv(int fd, const struct iovec *iov, int iovcnt) 519 { 520 pthread_t curthread = tls_get_curthread(); 521 int oldcancel; 522 ssize_t ret; 523 524 oldcancel = _thr_cancel_enter(curthread); 525 ret = __sys_readv(fd, iov, iovcnt); 526 _thr_cancel_leave(curthread, oldcancel); 527 return ret; 528 } 529 530 __strong_reference(__readv, readv); 531 532 ssize_t 533 __recvfrom(int s, void *b, size_t l, int f, struct sockaddr *from, 534 socklen_t *fl) 535 { 536 pthread_t curthread = tls_get_curthread(); 537 int oldcancel; 538 ssize_t ret; 539 540 oldcancel = _thr_cancel_enter(curthread); 541 ret = __sys_recvfrom(s, b, l, f, from, fl); 542 _thr_cancel_leave(curthread, oldcancel); 543 return (ret); 544 } 545 546 __strong_reference(__recvfrom, recvfrom); 547 548 ssize_t 549 __recvmsg(int s, struct msghdr *m, int f) 550 { 551 pthread_t curthread = tls_get_curthread(); 552 ssize_t ret; 553 int oldcancel; 554 555 oldcancel = _thr_cancel_enter(curthread); 556 ret = __sys_recvmsg(s, m, f); 557 _thr_cancel_leave(curthread, oldcancel); 558 return (ret); 559 } 560 561 __strong_reference(__recvmsg, recvmsg); 562 563 int 564 __select(int numfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, 565 struct timeval *timeout) 566 { 567 pthread_t curthread = tls_get_curthread(); 568 int oldcancel; 569 int ret; 570 571 oldcancel = _thr_cancel_enter(curthread); 572 ret = __sys_select(numfds, readfds, writefds, exceptfds, timeout); 573 _thr_cancel_leave(curthread, oldcancel); 574 return ret; 575 } 576 577 __strong_reference(__select, select); 578 579 ssize_t 580 __sendmsg(int s, const struct msghdr *m, int f) 581 { 582 pthread_t curthread = tls_get_curthread(); 583 ssize_t ret; 584 int oldcancel; 585 586 oldcancel = _thr_cancel_enter(curthread); 587 ret = __sys_sendmsg(s, m, f); 588 _thr_cancel_leave(curthread, oldcancel); 589 return (ret); 590 } 591 592 __strong_reference(__sendmsg, sendmsg); 593 594 ssize_t 595 __sendto(int s, const void *m, size_t l, int f, const struct sockaddr *t, 596 socklen_t tl) 597 { 598 pthread_t curthread = tls_get_curthread(); 599 ssize_t ret; 600 int oldcancel; 601 602 oldcancel = _thr_cancel_enter(curthread); 603 ret = __sys_sendto(s, m, l, f, t, tl); 604 _thr_cancel_leave(curthread, oldcancel); 605 return (ret); 606 } 607 608 __strong_reference(__sendto, sendto); 609 610 unsigned int 611 _sleep(unsigned int seconds) 612 { 613 pthread_t curthread = tls_get_curthread(); 614 int oldcancel; 615 unsigned int ret; 616 617 oldcancel = _thr_cancel_enter(curthread); 618 ret = __sleep(seconds); 619 _thr_cancel_leave(curthread, oldcancel); 620 return (ret); 621 } 622 623 __strong_reference(_sleep, sleep); 624 625 int 626 _system(const char *string) 627 { 628 pthread_t curthread = tls_get_curthread(); 629 int oldcancel; 630 int ret; 631 632 oldcancel = _thr_cancel_enter(curthread); 633 ret = __system(string); 634 _thr_cancel_leave(curthread, oldcancel); 635 return ret; 636 } 637 638 __strong_reference(_system, system); 639 640 int 641 _tcdrain(int fd) 642 { 643 pthread_t curthread = tls_get_curthread(); 644 int oldcancel; 645 int ret; 646 647 oldcancel = _thr_cancel_enter(curthread); 648 ret = __tcdrain(fd); 649 _thr_cancel_leave(curthread, oldcancel); 650 return (ret); 651 } 652 653 __strong_reference(_tcdrain, tcdrain); 654 655 int 656 ___usleep(useconds_t useconds) 657 { 658 pthread_t curthread = tls_get_curthread(); 659 int oldcancel; 660 int ret; 661 662 oldcancel = _thr_cancel_enter(curthread); 663 ret = __usleep(useconds); 664 _thr_cancel_leave(curthread, oldcancel); 665 return (ret); 666 } 667 668 __strong_reference(___usleep, usleep); 669 670 #if 0 671 /* 672 * REMOVED - vfork() works as per normal. In a threaded environment vfork() 673 * blocks the calling thread only and not other threads. 674 */ 675 int 676 _vfork(void) 677 { 678 return (fork()); 679 } 680 681 __strong_reference(_vfork, vfork); 682 #endif 683 684 pid_t 685 _wait(int *istat) 686 { 687 pthread_t curthread = tls_get_curthread(); 688 int oldcancel; 689 pid_t ret; 690 691 oldcancel = _thr_cancel_enter(curthread); 692 ret = __wait(istat); 693 _thr_cancel_leave(curthread, oldcancel); 694 return ret; 695 } 696 697 __strong_reference(_wait, wait); 698 699 pid_t 700 __wait4(pid_t pid, int *istat, int options, struct rusage *rusage) 701 { 702 pthread_t curthread = tls_get_curthread(); 703 int oldcancel; 704 pid_t ret; 705 706 oldcancel = _thr_cancel_enter(curthread); 707 ret = __sys_wait4(pid, istat, options, rusage); 708 _thr_cancel_leave(curthread, oldcancel); 709 return ret; 710 } 711 712 __strong_reference(__wait4, wait4); 713 714 pid_t 715 _waitpid(pid_t wpid, int *status, int options) 716 { 717 pthread_t curthread = tls_get_curthread(); 718 int oldcancel; 719 pid_t ret; 720 721 oldcancel = _thr_cancel_enter(curthread); 722 ret = __waitpid(wpid, status, options); 723 _thr_cancel_leave(curthread, oldcancel); 724 return ret; 725 } 726 727 __strong_reference(_waitpid, waitpid); 728 729 ssize_t 730 __write(int fd, const void *buf, size_t nbytes) 731 { 732 pthread_t curthread = tls_get_curthread(); 733 int oldcancel; 734 ssize_t ret; 735 736 oldcancel = _thr_cancel_enter(curthread); 737 ret = __sys_write(fd, buf, nbytes); 738 _thr_cancel_leave(curthread, oldcancel); 739 return ret; 740 } 741 742 __strong_reference(__write, write); 743 744 ssize_t 745 __writev(int fd, const struct iovec *iov, int iovcnt) 746 { 747 pthread_t curthread = tls_get_curthread(); 748 int oldcancel; 749 ssize_t ret; 750 751 oldcancel = _thr_cancel_enter(curthread); 752 ret = __sys_writev(fd, iov, iovcnt); 753 _thr_cancel_leave(curthread, oldcancel); 754 return ret; 755 } 756 757 __strong_reference(__writev, writev); 758