sysdeps/unix/sysv/linux/s390/s390-32/posix_fadvise64.c

   1 /* Copyright (C) 2003-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <fcntl.h>
  20 #include <sysdep.h>
  21
  22 int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise);
  23 int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise);
  24
  25 /* Advice the system about the expected behaviour of the application with
  26    respect to the file associated with FD.  */
  27
  28 struct fadvise64_64_layout
  29 {
  30   int fd;
  31   off64_t offset;
  32   off64_t len;
  33   int advise;
  34 };
  35
  36 int
  37 __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise)
  38 {
  39   struct fadvise64_64_layout parameters;
  40   INTERNAL_SYSCALL_DECL (err);
  41
  42   parameters.fd = fd;
  43   parameters.offset = offset;
  44   parameters.len = len;
  45   parameters.advise = advise;
  46   int ret = INTERNAL_SYSCALL (fadvise64_64, err, 1, &parameters);
  47   if (!INTERNAL_SYSCALL_ERROR_P (ret, err))
  48     return 0;
  49   return INTERNAL_SYSCALL_ERRNO (ret, err);
  50 }
  51
  52 #include <shlib-compat.h>
  53
  54 #if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3)
  55
  56 int
  57 attribute_compat_text_section
  58 __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise)
  59 {
  60   return __posix_fadvise64_l64 (fd, offset, len, advise);
  61 }
  62
  63 versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3);
  64 compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2);
  65 #else
  66 strong_alias (__posix_fadvise64_l64, posix_fadvise64);
  67 #endif