| /* Copyright (C) 2007-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <fcntl.h> |
| #include <kernel-features.h> |
| #include <sysdep.h> |
| |
| extern int __posix_fallocate64_l64 (int fd, __off64_t offset, __off64_t len); |
| #define __posix_fallocate64_l64 static internal_fallocate64 |
| #include <sysdeps/posix/posix_fallocate64.c> |
| #undef __posix_fallocate64_l64 |
| |
| #if !defined __ASSUME_FALLOCATE && defined __NR_fallocate |
| /* Defined in posix_fallocate.c. */ |
| extern int __have_fallocate attribute_hidden; |
| #endif |
| |
| |
| /* Reserve storage for the data of the file associated with FD. */ |
| int |
| __posix_fallocate64_l64 (int fd, __off64_t offset, __off64_t len) |
| { |
| #ifdef __NR_fallocate |
| # ifndef __ASSUME_FALLOCATE |
| if (__builtin_expect (__have_fallocate >= 0, 1)) |
| # endif |
| { |
| INTERNAL_SYSCALL_DECL (err); |
| int res = INTERNAL_SYSCALL (fallocate, err, 4, fd, 0, offset, len); |
| |
| if (! INTERNAL_SYSCALL_ERROR_P (res, err)) |
| return 0; |
| |
| # ifndef __ASSUME_FALLOCATE |
| if (__builtin_expect (INTERNAL_SYSCALL_ERRNO (res, err) == ENOSYS, 0)) |
| __have_fallocate = -1; |
| else |
| # endif |
| if (INTERNAL_SYSCALL_ERRNO (res, err) != EOPNOTSUPP) |
| return INTERNAL_SYSCALL_ERRNO (res, err); |
| } |
| #endif |
| |
| return internal_fallocate64 (fd, offset, len); |
| } |