]>
Commit | Line | Data |
---|---|---|
1 | /* Copyright (C) 1991-2015 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 <errno.h> | |
19 | #include <unistd.h> | |
20 | #include <sys/types.h> | |
21 | ||
22 | /* Seek to OFFSET on FD, starting from WHENCE. */ | |
23 | off_t | |
24 | __libc_lseek (fd, offset, whence) | |
25 | int fd; | |
26 | off_t offset; | |
27 | int whence; | |
28 | { | |
29 | if (fd < 0) | |
30 | { | |
31 | __set_errno (EBADF); | |
32 | return -1; | |
33 | } | |
34 | switch (whence) | |
35 | { | |
36 | case SEEK_SET: | |
37 | case SEEK_CUR: | |
38 | case SEEK_END: | |
39 | break; | |
40 | default: | |
41 | __set_errno (EINVAL); | |
42 | return -1; | |
43 | } | |
44 | ||
45 | __set_errno (ENOSYS); | |
46 | return -1; | |
47 | } | |
48 | weak_alias (__libc_lseek, __lseek) | |
49 | weak_alias (__libc_lseek, lseek) | |
50 | stub_warning (lseek) | |
51 | ||
52 | libc_hidden_def (__lseek) |