| /* Selective file content synch'ing. |
| Copyright (C) 2006-2014 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 <errno.h> |
| #include <fcntl.h> |
| #include <sys/types.h> |
| |
| #include <sysdep-cancel.h> |
| #include <sys/syscall.h> |
| |
| |
| #ifdef __NR_sync_file_range |
| int |
| sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags) |
| { |
| if (SINGLE_THREAD_P) |
| return INLINE_SYSCALL (sync_file_range, 6, fd, |
| __LONG_LONG_PAIR ((long) (from >> 32), (long) from), |
| __LONG_LONG_PAIR ((long) (to >> 32), (long) to), |
| flags); |
| |
| int result; |
| int oldtype = LIBC_CANCEL_ASYNC (); |
| |
| result = INLINE_SYSCALL (sync_file_range, 6, fd, |
| __LONG_LONG_PAIR ((long) (from >> 32), (long) from), |
| __LONG_LONG_PAIR ((long) (to >> 32), (long) to), |
| flags); |
| |
| LIBC_CANCEL_RESET (oldtype); |
| |
| return result; |
| } |
| #elif defined __NR_sync_file_range2 |
| int |
| sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags) |
| { |
| if (SINGLE_THREAD_P) |
| return INLINE_SYSCALL (sync_file_range2, 6, fd, flags, |
| __LONG_LONG_PAIR ((long) (from >> 32), (long) from), |
| __LONG_LONG_PAIR ((long) (to >> 32), (long) to)); |
| |
| int result; |
| int oldtype = LIBC_CANCEL_ASYNC (); |
| |
| result = INLINE_SYSCALL (sync_file_range2, 6, fd, flags, |
| __LONG_LONG_PAIR ((long) (from >> 32), (long) from), |
| __LONG_LONG_PAIR ((long) (to >> 32), (long) to)); |
| |
| LIBC_CANCEL_RESET (oldtype); |
| |
| return result; |
| } |
| #else |
| int |
| sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags) |
| { |
| __set_errno (ENOSYS); |
| return -1; |
| } |
| stub_warning (sync_file_range) |
| #endif |