ports/sysdeps/unix/sysv/linux/mips/mips32/posix_fadvise64.c

   1 /* Copyright (C) 2007-2014 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 /* Advice the system about the expected behaviour of the application with
  23    respect to the file associated with FD.  */
  24
  25 int
  26 __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise)
  27 {
  28 /* MIPS kernel only has NR_fadvise64 which acts as NR_fadvise64_64 */
  29 #ifdef __NR_fadvise64
  30   INTERNAL_SYSCALL_DECL (err);
  31   int ret = INTERNAL_SYSCALL (fadvise64, err, 7, fd, 0,
  32                               __LONG_LONG_PAIR ((long) (offset >> 32),
  33                                                 (long) offset),
  34                               __LONG_LONG_PAIR ((long) (len >> 32),
  35                                                 (long) len),
  36                               advise);
  37   if (INTERNAL_SYSCALL_ERROR_P (ret, err))
  38     return INTERNAL_SYSCALL_ERRNO (ret, err);
  39   return 0;
  40 #else
  41   return ENOSYS;
  42 #endif
  43 }
  44
  45 #include <shlib-compat.h>
  46
  47 #if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3)
  48
  49 int
  50 attribute_compat_text_section
  51 __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise)
  52 {
  53   return __posix_fadvise64_l64 (fd, offset, len, advise);
  54 }
  55
  56 versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3);
  57 compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2);
  58 #else
  59 strong_alias (__posix_fadvise64_l64, posix_fadvise64);
  60 #endif