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
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef NOT_CANCEL_H
  20 # define NOT_CANCEL_H
  21
  22 #include <fcntl.h>
  23 #include <sysdep.h>
  24 #include <errno.h>
  25 #include <unistd.h>
  26 #include <sys/syscall.h>
  27 #include <sys/wait.h>
  28 #include <time.h>
  29
  30 /* Non cancellable open syscall.  */
  31 __typeof (open) __open_nocancel;
  32
  33 /* Non cancellable open syscall (LFS version).  */
  34 __typeof (open64) __open64_nocancel;
  35
  36 /* Non cancellable openat syscall.  */
  37 __typeof (openat) __openat_nocancel;
  38
  39 /* Non cacellable openat syscall (LFS version).  */
  40 __typeof (openat64) __openat64_nocancel;
  41
  42 /* Non cancellable read syscall.  */
  43 __typeof (__read) __read_nocancel;
  44
  45 /* Non cancellable pread syscall (LFS version).  */
  46 __typeof (__pread64) __pread64_nocancel;
  47
  48 /* Uncancelable write.  */
  49 __typeof (__write) __write_nocancel;
  50
  51 /* Uncancelable close.  */
  52 __typeof (__close) __close_nocancel;
  53
  54 /* Non cancellable close syscall that does not also set errno in case of
  55    failure.  */
  56 static inline void
  57 __close_nocancel_nostatus (int fd)
  58 {
  59   __close_nocancel (fd);
  60 }
  61
  62 /* Non cancellable writev syscall that does not also set errno in case of
  63    failure.  */
  64 static inline void
  65 __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
  66 {
  67   INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
  68 }
  69
  70 /* Uncancelable fcntl.  */
  71 __typeof (__fcntl) __fcntl64_nocancel;
  72
  73 #if IS_IN (libc) || IS_IN (rtld)
  74 hidden_proto (__open_nocancel)
  75 hidden_proto (__open64_nocancel)
  76 hidden_proto (__openat_nocancel)
  77 hidden_proto (__openat64_nocancel)
  78 hidden_proto (__read_nocancel)
  79 hidden_proto (__pread64_nocancel)
  80 hidden_proto (__write_nocancel)
  81 hidden_proto (__close_nocancel)
  82 hidden_proto (__fcntl64_nocancel)
  83 #endif
  84
  85 #endif /* NOT_CANCEL_H  */