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b168057a | 1 | /* Copyright (C) 2005-2015 Free Software Foundation, Inc. |
e186c703 UD |
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 | |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
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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> | |
e186c703 | 28 | |
7c65e900 | 29 | |
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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 | { | |
38 | __set_errno (EINVAL); | |
39 | return -1; | |
40 | } | |
41 | ||
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42 | /* We must convert the value to dev_t type used by the kernel. */ |
43 | unsigned long long int k_dev = (*dev) & ((1ULL << 32) - 1); | |
44 | if (k_dev != *dev) | |
45 | { | |
46 | __set_errno (EINVAL); | |
47 | return -1; | |
48 | } | |
49 | ||
809fdf0d | 50 | return INLINE_SYSCALL (mknodat, 4, fd, file, mode, (unsigned int) k_dev); |
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51 | } |
52 | ||
53 | libc_hidden_def (__xmknodat) |