glibc/sysdeps/unix/sysv/linux/mknodat.c

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/* Create a special or ordinary file. Linux version.
Copyright (C) 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/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <sysdep.h>
int
__mknodat (int fd, const char *path, mode_t mode, dev_t dev)
{
/* The user-exported dev_t is 64-bit while the kernel interface is
32-bit. */
unsigned int k_dev = dev;
if (k_dev != dev)
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
return INLINE_SYSCALL_CALL (mknodat, fd, path, mode, k_dev);
}
libc_hidden_def (__mknodat)
weak_alias (__mknodat, mknodat)