1 | /* Copyright (C) 2005-2019 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 | <http://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <fcntl.h> |
20 | #include <stdio.h> |
21 | #include <string.h> |
22 | #include <sys/types.h> |
23 | #include <sys/stat.h> |
24 | #include <sys/sysmacros.h> |
25 | |
26 | #include <sysdep.h> |
27 | #include <sys/syscall.h> |
28 | |
29 | |
30 | /* Create a device file named PATH relative to FD, with permission and |
31 | special bits MODE and device number DEV (which can be constructed |
32 | from major and minor device numbers with the `makedev' macro above). */ |
33 | int |
34 | __xmknodat (int vers, int fd, const char *file, mode_t mode, dev_t *dev) |
35 | { |
36 | if (vers != _MKNOD_VER) |
37 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
38 | |
39 | /* We must convert the value to dev_t type used by the kernel. */ |
40 | unsigned long long int k_dev = (*dev) & ((1ULL << 32) - 1); |
41 | if (k_dev != *dev) |
42 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
43 | |
44 | return INLINE_SYSCALL (mknodat, 4, fd, file, mode, (unsigned int) k_dev); |
45 | } |
46 | |
47 | libc_hidden_def (__xmknodat) |
48 | |