mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/* Copyright (C) 2005, 2006 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 <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
/* Read the contents of the symbolic link PATH relative to FD 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
|
|
readlinkat (fd, path, buf, len)
|
|
int fd;
|
|
const char *path;
|
|
char *buf;
|
|
size_t len;
|
|
{
|
|
if (path == NULL)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
if (fd != AT_FDCWD && fd < 0 && *path != '/')
|
|
{
|
|
__set_errno (EBADF);
|
|
return -1;
|
|
}
|
|
|
|
__set_errno (ENOSYS);
|
|
return -1;
|
|
}
|
|
stub_warning (readlinkat)
|
|
libc_hidden_def (readlinkat)
|