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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | /* Uncancelable versions of cancelable interfaces. Linux version. Copyright (C) 2003, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <sys/types.h> #include <sysdep.h> #ifdef NOT_IN_libc /* Uncancelable open. */ #if defined __NR_openat && !defined __NR_open #define open_not_cancel(name, flags, mode) \ INLINE_SYSCALL (openat, 4, AT_FDCWD, (const char *) (name), (flags), (mode)) #define open_not_cancel_2(name, flags) \ INLINE_SYSCALL (openat, 3, AT_FDCWD, (const char *) (name), (flags)) #else #define open_not_cancel(name, flags, mode) \ INLINE_SYSCALL (open, 3, (const char *) (name), (flags), (mode)) #define open_not_cancel_2(name, flags) \ INLINE_SYSCALL (open, 2, (const char *) (name), (flags)) #endif #if 0 /* Uncancelable openat. */ #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt extern int __openat_nocancel (int fd, const char *fname, int oflag, mode_t mode) attribute_hidden; extern int __openat64_nocancel (int fd, const char *fname, int oflag, mode_t mode) attribute_hidden; #else # define __openat_nocancel(fd, fname, oflag, mode) \ openat (fd, fname, oflag, mode) # define __openat64_nocancel(fd, fname, oflag, mode) \ openat64 (fd, fname, oflag, mode) #endif #define openat_not_cancel(fd, fname, oflag, mode) \ __openat_nocancel (fd, fname, oflag, mode) #define openat_not_cancel_3(fd, fname, oflag) \ __openat_nocancel (fd, fname, oflag, 0) #define openat64_not_cancel(fd, fname, oflag, mode) \ __openat64_nocancel (fd, fname, oflag, mode) #define openat64_not_cancel_3(fd, fname, oflag) \ __openat64_nocancel (fd, fname, oflag, 0) #endif /* Uncancelable close. */ #define close_not_cancel(fd) \ INLINE_SYSCALL (close, 1, fd) #define close_not_cancel_no_status(fd) \ (void) ({ INTERNAL_SYSCALL_DECL (err); \ INTERNAL_SYSCALL (close, err, 1, (fd)); }) /* Uncancelable read. */ #define read_not_cancel(fd, buf, n) \ INLINE_SYSCALL (read, 3, (fd), (buf), (n)) #ifdef __LINUXTHREADS_NEW__ /* Uncancelable write. */ #define write_not_cancel(fd, buf, n) \ INLINE_SYSCALL (write, 3, (fd), (buf), (n)) #endif #if 0 /* Uncancelable writev. */ #define writev_not_cancel_no_status(fd, iov, n) \ (void) ({ INTERNAL_SYSCALL_DECL (err); \ INTERNAL_SYSCALL (writev, err, 3, (fd), (iov), (n)); }) /* Uncancelable fcntl. */ #define fcntl_not_cancel(fd, cmd, val) \ __fcntl_nocancel (fd, cmd, val) #endif #ifdef __LINUXTHREADS_NEW__ /* Uncancelable waitpid. */ #if 0 /*def __NR_waitpid*/ # define waitpid_not_cancel(pid, stat_loc, options) \ INLINE_SYSCALL (waitpid, 3, pid, stat_loc, options) #else # define waitpid_not_cancel(pid, stat_loc, options) \ INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL) #endif #endif /* Uncancelable pause. */ #ifdef __NR_pause # define pause_not_cancel() \ INLINE_SYSCALL (pause, 0) #else # include <unistd.h> extern __typeof(pause) __pause_nocancel; # define pause_not_cancel() \ __pause_nocancel () #endif /* Uncancelable nanosleep. */ #ifdef __NR_nanosleep # define nanosleep_not_cancel(requested_time, remaining) \ INLINE_SYSCALL (nanosleep, 2, requested_time, remaining) /*#else # define nanosleep_not_cancel(requested_time, remaining) \ __nanosleep_nocancel (requested_time, remaining)*/ #endif #if 0 /* Uncancelable sigsuspend. */ #define sigsuspend_not_cancel(set) \ __sigsuspend_nocancel (set) #endif #elif !defined NOT_IN_libc #include <cancel.h> #include <fcntl.h> #include <unistd.h> #define open_not_cancel(name, flags, mode) \ __NC(open)(name, flags, mode) #define open_not_cancel_2(name, flags) \ __NC(open2)(name, flags) #define close_not_cancel(fd) \ __NC(close)(fd) #define close_not_cancel_no_status(fd) \ __close_nocancel_no_status(fd) #define read_not_cancel(fd, buf, n) \ __NC(read)(fd, buf, n) #define write_not_cancel(fd, buf, n) \ __NC(write)(fd, buf, n) #define fcntl_not_cancel(fd, cmd, val) \ __NC(fcntl)(fd, cmd, val) #endif |