Fix nice getpriority, setpriority namespace (bug 18553).
[glibc.git] / io / linkat.c
blobb999f24d735372308672eed53f6e87d283f55b7f
1 /* Copyright (C) 2005-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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/>. */
18 #include <errno.h>
19 #include <fcntl.h>
20 #include <stddef.h>
21 #include <unistd.h>
24 /* Make a link to FROM relative to FROMFD called TO relative to TOFD. */
25 int
26 linkat (fromfd, from, tofd, to, flags)
27 int fromfd;
28 const char *from;
29 int tofd;
30 const char *to;
31 int flags;
33 if (from == NULL || to == NULL)
35 __set_errno (EINVAL);
36 return -1;
39 if ((tofd != AT_FDCWD && tofd < 0 && *to != '/')
40 || (fromfd != AT_FDCWD && fromfd < 0 && *from != '/'))
42 __set_errno (EBADF);
43 return -1;
46 __set_errno (ENOSYS);
47 return -1;
49 stub_warning (linkat)