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MKNODAT(2) Linux Programmer's Manual MKNODAT(2)
NAME
mknodat - create a special or ordinary file relative to a directory
file descriptor
SYNOPSIS
#include <sys/stat.h>
int mknodat(int dirfd, const char *pathname, mode_t mode, dev_t dev);
DESCRIPTION
The mknodat() system call operates in exactly the same way as mknod(2),
except for the differences described in this manual page.
If the pathname given in pathname is relative, then it is interpreted
relative to the directory referred to by the file descriptor dirfd
(rather than relative to the current working directory of the calling
process, as is done by mknod(2) for a relative pathname).
If the pathname given in pathname is relative and dirfd is the special
value AT_FDCWD, then pathname is interpreted relative to the current
working directory of the calling process (like mknod(2)).
If the pathname given in pathname is absolute, then dirfd is ignored.
RETURN VALUE
On success, mknodat() returns 0. On error, -1 is returned and errno is
set to indicate the error.
ERRORS
The same errors that occur for mknod(2) can also occur for mknodat().
The following additional errors can occur for mknodat():
EBADF dirfd is not a valid file descriptor.
ENOTDIR
pathname is a relative path and dirfd is a file descriptor
referring to a file other than a directory.
NOTES
See openat(2) for an explanation of the need for mknodat().
CONFORMING TO
This system call is non-standard but is proposed for inclusion in a
future revision of POSIX.1.
VERSIONS
mknodat() was added to Linux in kernel 2.6.16.
SEE ALSO
mknod(2), openat(2), path_resolution(2)
Linux 2.6.16 2006-04-06 MKNODAT(2)
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This page was generated on Tue Feb 13 02:17:36 GMT 2007
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