sysdeps/unix/sysv/linux/read.c

   1 /* Linux read syscall implementation.
   2    Copyright (C) 2017-2019 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 #include <unistd.h>
  20 #include <sysdep-cancel.h>
  21
  22 /* Read NBYTES into BUF from FD.  Return the number read or -1.  */
  23 ssize_t
  24 __libc_read (int fd, void *buf, size_t nbytes)
  25 {
  26   return SYSCALL_CANCEL (read, fd, buf, nbytes);
  27 }
  28 libc_hidden_def (__libc_read)
  29
  30 libc_hidden_def (__read)
  31 weak_alias (__libc_read, __read)
  32 libc_hidden_def (read)
  33 weak_alias (__libc_read, read)