1 /* Uncancelable versions of cancelable interfaces. Linux version. 2 Copyright (C) 2003, 2006 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, see 18 <http://www.gnu.org/licenses/>. */ 19 20 #include <sys/types.h> 21 #include <sysdep.h> 22 #include <time.h> 23 24 /* Uncancelable open. */ 25 #if defined __NR_openat && !defined __NR_open 26 #define open_not_cancel(name, flags, mode) \ 27 INLINE_SYSCALL (openat, 4, AT_FDCWD, (const char *) (name), \ 28 (flags), (mode)) 29 #define open_not_cancel_2(name, flags) \ 30 INLINE_SYSCALL (openat, 3, AT_FDCWD, (const char *) (name), \ 31 (flags)) 32 #else 33 #define open_not_cancel(name, flags, mode) \ 34 INLINE_SYSCALL (open, 3, (const char *) (name), (flags), (mode)) 35 #define open_not_cancel_2(name, flags) \ 36 INLINE_SYSCALL (open, 2, (const char *) (name), (flags)) 37 #endif 38 39 /* Uncancelable openat. */ 40 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt 41 extern int __openat_nocancel (int fd, const char *fname, int oflag, 42 mode_t mode) attribute_hidden; 43 extern int __openat64_nocancel (int fd, const char *fname, int oflag, 44 mode_t mode) attribute_hidden; 45 #else 46 # define __openat_nocancel(fd, fname, oflag, mode) \ 47 openat (fd, fname, oflag, mode) 48 # define __openat64_nocancel(fd, fname, oflag, mode) \ 49 openat64 (fd, fname, oflag, mode) 50 #endif 51 52 #define openat_not_cancel(fd, fname, oflag, mode) \ 53 __openat_nocancel (fd, fname, oflag, mode) 54 #define openat_not_cancel_3(fd, fname, oflag) \ 55 __openat_nocancel (fd, fname, oflag, 0) 56 #define openat64_not_cancel(fd, fname, oflag, mode) \ 57 __openat64_nocancel (fd, fname, oflag, mode) 58 #define openat64_not_cancel_3(fd, fname, oflag) \ 59 __openat64_nocancel (fd, fname, oflag, 0) 60 61 /* Uncancelable close. */ 62 #define close_not_cancel(fd) \ 63 INLINE_SYSCALL (close, 1, fd) 64 #define close_not_cancel_no_status(fd) \ 65 (void) ({ INTERNAL_SYSCALL_DECL (err); \ 66 INTERNAL_SYSCALL (close, err, 1, (fd)); }) 67 68 /* Uncancelable read. */ 69 #define read_not_cancel(fd, buf, n) \ 70 INLINE_SYSCALL (read, 3, (fd), (buf), (n)) 71 72 /* Uncancelable write. */ 73 #define write_not_cancel(fd, buf, n) \ 74 INLINE_SYSCALL (write, 3, (fd), (buf), (n)) 75 76 /* Uncancelable writev. */ 77 #define writev_not_cancel_no_status(fd, iov, n) \ 78 (void) ({ INTERNAL_SYSCALL_DECL (err); \ 79 INTERNAL_SYSCALL (writev, err, 3, (fd), (iov), (n)); }) 80 81 /* Uncancelable fcntl. */ 82 #define fcntl_not_cancel(fd, cmd, val) \ 83 __fcntl_nocancel (fd, cmd, val) 84 85 /* Uncancelable waitpid. */ 86 #ifdef __NR_waitpid 87 # define waitpid_not_cancel(pid, stat_loc, options) \ 88 INLINE_SYSCALL (waitpid, 3, pid, stat_loc, options) 89 #else 90 # define waitpid_not_cancel(pid, stat_loc, options) \ 91 INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL) 92 #endif 93 94 /* Uncancelable pause. */ 95 #ifdef __NR_pause 96 # define pause_not_cancel() \ 97 INLINE_SYSCALL (pause, 0) 98 #else 99 # define pause_not_cancel() \ 100 __pause_nocancel () 101 #endif 102 103 /* Uncancelable nanosleep. */ 104 #ifdef __NR_nanosleep 105 # define nanosleep_not_cancel(requested_time, remaining) \ 106 INLINE_SYSCALL (nanosleep, 2, requested_time, remaining) 107 #else 108 extern int __nanosleep_nocancel (const struct timespec *requested_time, struct timespec *remaining); 109 # define nanosleep_not_cancel(requested_time, remaining) \ 110 __nanosleep_nocancel (requested_time, remaining) 111 #endif 112 113 /* Uncancelable sigsuspend. */ 114 #define sigsuspend_not_cancel(set) \ 115 __sigsuspend_nocancel (set) 116