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1/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
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 <fcntl.h>
21#include <sys/types.h>
22#include <sys/stat.h>
23#include <sys/sysmacros.h>
24
25#include <sysdep.h>
26#include <sys/syscall.h>
27
28/* Create a device file named PATH, with permission and special bits MODE
29 and device number DEV (which can be constructed from major and minor
30 device numbers with the `makedev' macro above). */
31int
32__xmknod (int vers, const char *path, mode_t mode, dev_t *dev)
33{
34 unsigned long long int k_dev;
35
36 if (vers != _MKNOD_VER)
37 {
38 __set_errno (EINVAL);
39 return -1;
40 }
41
42 /* We must convert the value to dev_t type used by the kernel. */
43 k_dev = (*dev) & ((1ULL << 32) - 1);
44 if (k_dev != *dev)
45 {
46 __set_errno (EINVAL);
47 return -1;
48 }
49
50 return INLINE_SYSCALL (mknodat, 4, AT_FDCWD, path, mode,
51 (unsigned int) k_dev);
52}
53weak_alias (__xmknod, _xmknod)
54libc_hidden_def (__xmknod)
55

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