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glibc/sysdeps/unix/sysv/linux/xmknod.c
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/* xmknod call using old-style Unix mknod system call. | |
Copyright (C) 1991-2016 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 | |
<http://www.gnu.org/licenses/>. */ | |
#include <errno.h> | |
#include <sys/types.h> | |
#include <sys/stat.h> | |
#include <sys/sysmacros.h> | |
#include <sysdep.h> | |
#include <sys/syscall.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 (mknod, 3, path, mode, (unsigned int) k_dev); | |
} | |
weak_alias (__xmknod, _xmknod) | |
libc_hidden_def (__xmknod) |