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6d7e8eda | 1 | /* Copyright (C) 1991-2023 Free Software Foundation, Inc. |
478b92f0 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
478b92f0 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
478b92f0 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 RM |
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 | |
9d46370c | 24 | __libc_lseek (int fd, off_t offset, int whence) |
28f540f4 RM |
25 | { |
26 | if (fd < 0) | |
27 | { | |
c4029823 | 28 | __set_errno (EBADF); |
28f540f4 RM |
29 | return -1; |
30 | } | |
31 | switch (whence) | |
32 | { | |
33 | case SEEK_SET: | |
34 | case SEEK_CUR: | |
35 | case SEEK_END: | |
36 | break; | |
37 | default: | |
c4029823 | 38 | __set_errno (EINVAL); |
28f540f4 RM |
39 | return -1; |
40 | } | |
41 | ||
c4029823 | 42 | __set_errno (ENOSYS); |
28f540f4 RM |
43 | return -1; |
44 | } | |
b2e25af0 RM |
45 | weak_alias (__libc_lseek, __lseek) |
46 | weak_alias (__libc_lseek, lseek) | |
28f540f4 RM |
47 | stub_warning (lseek) |
48 | ||
b2e25af0 | 49 | libc_hidden_def (__lseek) |