| /* Copyright (C) 1991-2016 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 <unistd.h> |
| #include <sys/types.h> |
| |
| /* Seek to OFFSET on FD, starting from WHENCE. */ |
| off_t |
| __libc_lseek (int fd, off_t offset, int whence) |
| { |
| if (fd < 0) |
| { |
| __set_errno (EBADF); |
| return -1; |
| } |
| switch (whence) |
| { |
| case SEEK_SET: |
| case SEEK_CUR: |
| case SEEK_END: |
| break; |
| default: |
| __set_errno (EINVAL); |
| return -1; |
| } |
| |
| __set_errno (ENOSYS); |
| return -1; |
| } |
| weak_alias (__libc_lseek, __lseek) |
| weak_alias (__libc_lseek, lseek) |
| stub_warning (lseek) |
| |
| libc_hidden_def (__lseek) |