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

   1 /* Uncancelable versions of cancelable interfaces.  Linux/NPTL version.
   2    Copyright (C) 2003-2018 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 #ifndef NOT_CANCEL_H
  21 # define NOT_CANCEL_H
  22
  23 #include <fcntl.h>
  24 #include <sysdep.h>
  25 #include <errno.h>
  26 #include <unistd.h>
  27 #include <sys/syscall.h>
  28 #include <sys/wait.h>
  29 #include <time.h>
  30
  31 /* Non cancellable open syscall.  */
  32 __typeof (open) __open_nocancel;
  33
  34 /* Non cancellable open syscall (LFS version).  */
  35 __typeof (open64) __open64_nocancel;
  36
  37 /* Non cancellable openat syscall.  */
  38 __typeof (openat) __openat_nocancel;
  39
  40 /* Non cacellable openat syscall (LFS version).  */
  41 __typeof (openat64) __openat64_nocancel;
  42
  43 /* Non cancellable read syscall.  */
  44 __typeof (__read) __read_nocancel;
  45
  46 /* Uncancelable write.  */
  47 __typeof (__write) __write_nocancel;
  48
  49 /* Uncancelable close.  */
  50 __typeof (__close) __close_nocancel;
  51
  52 /* Non cancellable close syscall that does not also set errno in case of
  53    failure.  */
  54 static inline void
  55 __close_nocancel_nostatus (int fd)
  56 {
  57   __close_nocancel (fd);
  58 }
  59
  60 /* Non cancellable writev syscall that does not also set errno in case of
  61    failure.  */
  62 static inline void
  63 __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
  64 {
  65   INTERNAL_SYSCALL_DECL (err);
  66   INTERNAL_SYSCALL_CALL (writev, err, fd, iov, iovcnt);
  67 }
  68
  69 /* Uncancelable waitpid.  */
  70 __typeof (waitpid) __waitpid_nocancel;
  71
  72 /* Uncancelable pause.  */
  73 __typeof (pause) __pause_nocancel;
  74
  75 /* Uncancelable nanosleep.  */
  76 __typeof (__nanosleep) __nanosleep_nocancel;
  77
  78 /* Uncancelable fcntl.  */
  79 __typeof (__fcntl) __fcntl64_nocancel;
  80
  81 #if IS_IN (libc) || IS_IN (rtld)
  82 hidden_proto (__open_nocancel)
  83 hidden_proto (__open64_nocancel)
  84 hidden_proto (__openat_nocancel)
  85 hidden_proto (__openat64_nocancel)
  86 hidden_proto (__read_nocancel)
  87 hidden_proto (__write_nocancel)
  88 hidden_proto (__close_nocancel)
  89 hidden_proto (__waitpid_nocancel)
  90 hidden_proto (__pause_nocancel)
  91 hidden_proto (__nanosleep_nocancel)
  92 hidden_proto (__fcntl64_nocancel)
  93 #endif
  94
  95 #endif /* NOT_CANCEL_H  */