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

   1 /* Uncancelable versions of cancelable interfaces.  Linux/NPTL 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <sysdep.h>
  22
  23 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
  24 extern int __open_nocancel (const char *, int, ...) attribute_hidden;
  25 extern int __close_nocancel (int) attribute_hidden;
  26 extern int __read_nocancel (int, void *, size_t) attribute_hidden;
  27 extern int __write_nocancel (int, const void *, size_t) attribute_hidden;
  28 extern pid_t __waitpid_nocancel (pid_t, int *, int) attribute_hidden;
  29 extern int __openat_nocancel (int fd, const char *fname, int oflag,
  30                                 mode_t mode) attribute_hidden;
  31 extern int __openat64_nocancel (int fd, const char *fname, int oflag,
  32                                   mode_t mode) attribute_hidden;
  33 #else
  34 # define __open_nocancel(name, ...) __open (name, __VA_ARGS__)
  35 # define __close_nocancel(fd) __close (fd)
  36 # define __read_nocancel(fd, buf, len) __read (fd, buf, len)
  37 # define __write_nocancel(fd, buf, len) __write (fd, buf, len)
  38 # define __waitpid_nocancel(pid, stat_loc, options) \
  39   __waitpid (pid, stat_loc, options)
  40 # define __openat_nocancel(fd, fname, oflag, mode) \
  41   openat (fd, fname, oflag, mode)
  42 # define __openat64_nocancel(fd, fname, oflag, mode) \
  43   openat64 (fd, fname, oflag, mode)
  44 #endif
  45
  46 /* Uncancelable open.  */
  47 #define open_not_cancel(name, flags, mode) \
  48    __open_nocancel (name, flags, mode)
  49 #define open_not_cancel_2(name, flags) \
  50    __open_nocancel (name, flags)
  51
  52 /* Uncancelable openat.  */
  53 #define openat_not_cancel(fd, fname, oflag, mode) \
  54   __openat_nocancel (fd, fname, oflag, mode)
  55 #define openat_not_cancel_3(fd, fname, oflag) \
  56   __openat_nocancel (fd, fname, oflag, 0)
  57 #define openat64_not_cancel(fd, fname, oflag, mode) \
  58   __openat64_nocancel (fd, fname, oflag, mode)
  59 #define openat64_not_cancel_3(fd, fname, oflag) \
  60   __openat64_nocancel (fd, fname, oflag, 0)
  61
  62 /* Uncancelable close.  */
  63 #define close_not_cancel(fd) \
  64   __close_nocancel (fd)
  65 #define close_not_cancel_no_status(fd) \
  66   (void) ({ INTERNAL_SYSCALL_DECL (err);                                      \
  67             INTERNAL_SYSCALL (close, err, 1, (fd)); })
  68
  69 /* Uncancelable read.  */
  70 #define read_not_cancel(fd, buf, n) \
  71   __read_nocancel (fd, buf, n)
  72
  73 /* Uncancelable write.  */
  74 #define write_not_cancel(fd, buf, n) \
  75   __write_nocancel (fd, buf, n)
  76
  77 /* Uncancelable writev.  */
  78 #define writev_not_cancel_no_status(fd, iov, n) \
  79   (void) ({ INTERNAL_SYSCALL_DECL (err);                                      \
  80             INTERNAL_SYSCALL (writev, err, 3, (fd), (iov), (n)); })
  81
  82 /* Uncancelable fcntl.  */
  83 #define fcntl_not_cancel(fd, cmd, val) \
  84   __fcntl_nocancel (fd, cmd, val)
  85
  86 /* Uncancelable waitpid.  */
  87 #ifdef __NR_waitpid
  88 # define waitpid_not_cancel(pid, stat_loc, options) \
  89   __waitpid_nocancel (pid, stat_loc, options)
  90 #else
  91 # define waitpid_not_cancel(pid, stat_loc, options) \
  92   INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
  93 #endif
  94
  95 /* Uncancelable pause.  */
  96 #define pause_not_cancel() \
  97   __pause_nocancel ()
  98
  99 /* Uncancelable nanosleep.  */
 100 #define nanosleep_not_cancel(requested_time, remaining) \
 101   __nanosleep_nocancel (requested_time, remaining)
 102
 103 /* Uncancelable sigsuspend.  */
 104 #define sigsuspend_not_cancel(set) \
 105   __sigsuspend_nocancel (set)