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

   1 /* Uncancelable versions of cancelable interfaces.  Linux/NPTL version.
   2    Copyright (C) 2003 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 #else
  30 #define __open_nocancel(name, ...) __open (name, __VA_ARGS__)
  31 #define __close_nocancel(fd) __close (fd)
  32 #define __read_nocancel(fd, buf, len) __read (fd, buf, len)
  33 #define __write_nocancel(fd, buf, len) __write (fd, buf, len)
  34 #define __waitpid_nocancel(pid, stat_loc, options) \
  35   __waitpid (pid, stat_loc, options)
  36 #endif
  37
  38 /* Uncancelable open.  */
  39 #define open_not_cancel(name, flags, mode) \
  40    __open_nocancel (name, flags, mode)
  41 #define open_not_cancel_2(name, flags) \
  42    __open_nocancel (name, flags)
  43
  44 /* Uncancelable close.  */
  45 #define close_not_cancel(fd) \
  46   __close_nocancel (fd)
  47 #define close_not_cancel_no_status(fd) \
  48   (void) ({ INTERNAL_SYSCALL_DECL (err);                                      \
  49             INTERNAL_SYSCALL (close, err, 1, (fd)); })
  50
  51 /* Uncancelable read.  */
  52 #define read_not_cancel(fd, buf, n) \
  53   __read_nocancel (fd, buf, n)
  54
  55 /* Uncancelable write.  */
  56 #define write_not_cancel(fd, buf, n) \
  57   __write_nocancel (fd, buf, n)
  58
  59 /* Uncancelable writev.  */
  60 #define writev_not_cancel_no_status(fd, iov, n) \
  61   (void) ({ INTERNAL_SYSCALL_DECL (err);                                      \
  62             INTERNAL_SYSCALL (writev, err, 3, (fd), (iov), (n)); })
  63
  64 /* Uncancelable fcntl.  */
  65 #define fcntl_not_cancel(fd, cmd, val) \
  66   __fcntl_nocancel (fd, cmd, val)
  67
  68 /* Uncancelable waitpid.  */
  69 #ifdef __NR_waitpid
  70 # define waitpid_not_cancel(pid, stat_loc, options) \
  71   __waitpid_nocancel (pid, stat_loc, options)
  72 #else
  73 # define waitpid_not_cancel(pid, stat_loc, options) \
  74   INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL)
  75 #endif