| /* Provide kernel hint to read ahead. |
| Copyright (C) 2002-2014 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.h> |
| #include <sys/syscall.h> |
| |
| |
| #ifdef __NR_readahead |
| |
| ssize_t |
| __readahead (int fd, off64_t offset, size_t count) |
| { |
| return INLINE_SYSCALL (readahead, 4, fd, |
| __LONG_LONG_PAIR ((off_t) (offset >> 32), |
| (off_t) (offset & 0xffffffff)), |
| count); |
| } |
| #else |
| ssize_t |
| __readahead (int fd, off64_t offset, size_t count) |
| { |
| __set_errno (ENOSYS); |
| return -1; |
| } |
| stub_warning (readahead) |
| #endif |
| |
| weak_alias (__readahead, readahead) |
