nptl/sysdeps/unix/sysv/linux/i386/not-cancel.h

   1 /* Uncancelable versions of cancelable interfaces.  Linux/NPTL version.
   2    Copyright (C) 2003-2014 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 <sysdep.h>
  21
  22 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
  23 extern int __open_nocancel (const char *, int, ...) attribute_hidden;
  24 extern int __close_nocancel (int) attribute_hidden;
  25 extern int __read_nocancel (int, void *, size_t) attribute_hidden;
  26 extern int __write_nocancel (int, const void *, size_t) attribute_hidden;
  27 extern pid_t __waitpid_nocancel (pid_t, int *, int) attribute_hidden;
  28 extern int __openat_nocancel (int fd, const char *fname, int oflag,
  29                                 mode_t mode) attribute_hidden;
  30 extern int __openat64_nocancel (int fd, const char *fname, int oflag,
  31                                   mode_t mode) attribute_hidden;
  32 #else
  33 # define __open_nocancel(name, ...) __open (name, __VA_ARGS__)
  34 # define __close_nocancel(fd) __close (fd)
  35 # define __read_nocancel(fd, buf, len) __read (fd, buf, len)
  36 # define __write_nocancel(fd, buf, len) __write (fd, buf, len)
  37 # define __waitpid_nocancel(pid, stat_loc, options) \
  38   __waitpid (pid, stat_loc, options)
  39 # define __openat_nocancel(fd, fname, oflag, mode) \
  40   openat (fd, fname, oflag, mode)
  41 # define __openat64_nocancel(fd, fname, oflag, mode) \
  42   openat64 (fd, fname, oflag, mode)
  43 #endif
  44
  45 /* Uncancelable open.  */
  46 #define open_not_cancel(name, flags, mode) \
  47    __open_nocancel (name, flags, mode)
  48 #define open_not_cancel_2(name, flags) \
  49    __open_nocancel (name, flags)
  50
  51 /* Uncancelable openat.  */
  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   __close_nocancel (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   __read_nocancel (fd, buf, n)
  71
  72 /* Uncancelable write.  */
  73 #define write_not_cancel(fd, buf, n) \
  74   __write_nocancel (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   __waitpid_nocancel (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 #define pause_not_cancel() \
  96   __pause_nocancel ()
  97
  98 /* Uncancelable nanosleep.  */
  99 #define nanosleep_not_cancel(requested_time, remaining) \
 100   __nanosleep_nocancel (requested_time, remaining)
 101
 102 /* Uncancelable sigsuspend.  */
 103 #define sigsuspend_not_cancel(set) \
 104   __sigsuspend_nocancel (set)