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

   1 /* Uncancelable versions of cancelable interfaces.  Linux/NPTL version.
   2    Copyright (C) 2003-2021 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    <https://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 /* Non cancellable pread syscall (LFS version).  */
  47 __typeof (__pread64) __pread64_nocancel;
  48
  49 /* Uncancelable write.  */
  50 __typeof (__write) __write_nocancel;
  51
  52 /* Uncancelable close.  */
  53 __typeof (__close) __close_nocancel;
  54
  55 /* Non cancellable close syscall that does not also set errno in case of
  56    failure.  */
  57 static inline void
  58 __close_nocancel_nostatus (int fd)
  59 {
  60   __close_nocancel (fd);
  61 }
  62
  63 /* Non cancellable writev syscall that does not also set errno in case of
  64    failure.  */
  65 static inline void
  66 __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
  67 {
  68   INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
  69 }
  70
  71 /* Uncancelable fcntl.  */
  72 __typeof (__fcntl) __fcntl64_nocancel;
  73
  74 #if IS_IN (libc) || IS_IN (rtld)
  75 hidden_proto (__open_nocancel)
  76 hidden_proto (__open64_nocancel)
  77 hidden_proto (__openat_nocancel)
  78 hidden_proto (__openat64_nocancel)
  79 hidden_proto (__read_nocancel)
  80 hidden_proto (__pread64_nocancel)
  81 hidden_proto (__write_nocancel)
  82 hidden_proto (__close_nocancel)
  83 hidden_proto (__fcntl64_nocancel)
  84 #endif
  85
  86 #endif /* NOT_CANCEL_H  */