1 | /* xmknod call using old-style Unix mknod system call. |
2 | Copyright (C) 1991-2016 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <errno.h> |
20 | #include <sys/types.h> |
21 | #include <sys/stat.h> |
22 | #include <sys/sysmacros.h> |
23 | |
24 | #include <sysdep.h> |
25 | #include <sys/syscall.h> |
26 | |
27 | /* Create a device file named PATH, with permission and special bits MODE |
28 | and device number DEV (which can be constructed from major and minor |
29 | device numbers with the `makedev' macro above). */ |
30 | int |
31 | __xmknod (int vers, const char *path, mode_t mode, dev_t *dev) |
32 | { |
33 | unsigned long long int k_dev; |
34 | |
35 | if (vers != _MKNOD_VER) |
36 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
37 | |
38 | /* We must convert the value to dev_t type used by the kernel. */ |
39 | k_dev = (*dev) & ((1ULL << 32) - 1); |
40 | if (k_dev != *dev) |
41 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
42 | |
43 | return INLINE_SYSCALL (mknod, 3, path, mode, (unsigned int) k_dev); |
44 | } |
45 | |
46 | weak_alias (__xmknod, _xmknod) |
47 | libc_hidden_def (__xmknod) |
48 | |