1 /* Copyright (C) 2005-2022 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 <https://www.gnu.org/licenses/>. */
17
18 #include <unistd.h>
19 #include <sys/param.h>
20 #ifdef HAVE_INLINED_SYSCALLS
21 # include <errno.h>
22 # include <sysdep.h>
23 #endif
24
25
26 ssize_t
__readlink_chk(const char * path,void * buf,size_t len,size_t buflen)27 __readlink_chk (const char *path, void *buf, size_t len, size_t buflen)
28 {
29 if (len > buflen)
30 __chk_fail ();
31
32 return __readlink (path, buf, len);
33 }
34