sysdeps/unix/sysv/linux/posix_fallocate64.c

   1 /* Copyright (C) 2007-2017 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 <fcntl.h>
  19 #include <sysdep.h>
  20
  21 extern int __posix_fallocate64_l64 (int fd, __off64_t offset, __off64_t len);
  22 libc_hidden_proto (__posix_fallocate64_l64)
  23 #define __posix_fallocate64_l64 static internal_fallocate64
  24 #include <sysdeps/posix/posix_fallocate64.c>
  25 #undef __posix_fallocate64_l64
  26
  27 /* Reserve storage for the data of the file associated with FD.  */
  28 int
  29 __posix_fallocate64_l64 (int fd, __off64_t offset, __off64_t len)
  30 {
  31   INTERNAL_SYSCALL_DECL (err);
  32 #ifdef INTERNAL_SYSCALL_TYPES
  33   int res = INTERNAL_SYSCALL_TYPES (fallocate, err, 4, int, fd,
  34                                     int, 0, off_t, offset,
  35                                     off_t, len);
  36 #else
  37   int res = INTERNAL_SYSCALL_CALL (fallocate, err, fd, 0,
  38                                    SYSCALL_LL64 (offset), SYSCALL_LL64 (len));
  39 #endif
  40   if (! INTERNAL_SYSCALL_ERROR_P (res, err))
  41     return 0;
  42   if (INTERNAL_SYSCALL_ERRNO (res, err) != EOPNOTSUPP)
  43     return INTERNAL_SYSCALL_ERRNO (res, err);
  44   return internal_fallocate64 (fd, offset, len);
  45 }
  46 libc_hidden_def (__posix_fallocate64_l64)