mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-16 08:00:05 +00:00
2315996215
The __NR_mknodat syscall is supported on all kernels, so the generic implementation is used as default. Checked on x86_64-linux-gnu and i686-linux-gnu. Reviewed-by: Lukasz Majewski <lukma@denx.de>
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/* xmknod call using old-style Unix mknod system call.
|
|
Copyright (C) 1991-2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <sys/stat.h>
|
|
#include <sys/sysmacros.h>
|
|
#include <fcntl.h>
|
|
#include <sysdep.h>
|
|
|
|
/* Create a device file named PATH, with permission and special bits MODE
|
|
and device number DEV (which can be constructed from major and minor
|
|
device numbers with the `makedev' macro above). */
|
|
int
|
|
__xmknod (int vers, const char *path, mode_t mode, dev_t *dev)
|
|
{
|
|
unsigned long long int k_dev;
|
|
|
|
if (vers != _MKNOD_VER)
|
|
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
|
|
|
|
/* We must convert the value to dev_t type used by the kernel. */
|
|
k_dev = (*dev) & ((1ULL << 32) - 1);
|
|
if (k_dev != *dev)
|
|
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
|
|
|
|
return INLINE_SYSCALL_CALL (mknodat, AT_FDCWD, path, mode,
|
|
(unsigned int) k_dev);
|
|
}
|
|
|
|
weak_alias (__xmknod, _xmknod)
|
|
libc_hidden_def (__xmknod)
|