1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
/* Read value of a symbolic link. Linux version.
Copyright (C) 2011-2023 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
<https://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <fcntl.h>
#include <sysdep.h>
/* Read the contents of the symbolic link PATH into no more than
LEN bytes of BUF. The contents are not null-terminated.
Returns the number of characters read, or -1 for errors. */
ssize_t
__readlink (const char *path, char *buf, size_t len)
{
#ifdef __NR_readlink
return INLINE_SYSCALL_CALL (readlink, path, buf, len);
#else
return INLINE_SYSCALL_CALL (readlinkat, AT_FDCWD, path, buf, len);
#endif
}
weak_alias (__readlink, readlink)
|
