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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* xmknod call using old-style Unix mknod system call.
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Copyright (C) 1991-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/sysmacros.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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/* Create a device file named PATH, with permission and special bits MODE
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and device number DEV (which can be constructed from major and minor
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device numbers with the `makedev' macro above). */
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int
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__xmknod (int vers, const char *path, mode_t mode, dev_t *dev)
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{
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unsigned long long int k_dev;
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if (vers != _MKNOD_VER)
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{
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__set_errno (EINVAL);
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return -1;
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}
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/* We must convert the value to dev_t type used by the kernel. */
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k_dev = (*dev) & ((1ULL << 32) - 1);
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if (k_dev != *dev)
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{
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__set_errno (EINVAL);
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return -1;
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}
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return INLINE_SYSCALL (mknod, 3, path, mode, (unsigned int) k_dev);
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}
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weak_alias (__xmknod, _xmknod)
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libc_hidden_def (__xmknod)
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