Name
mknodat — create a special or ordinary file relative
to a directory file descriptor
Synopsis
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 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 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
relative and dirfd is a file
descriptor referring to a file other than a
directory.
VERSIONS
mknodat() was added to Linux
in kernel 2.6.16.
CONFORMING TO
This system call is non-standard but is proposed for
inclusion in a future revision of POSIX.1.
NOTES
See openat(2) for an
explanation of the need for mknodat().
SEE ALSO
mknod(2), openat(2), path_resolution(7)
This manpage is Copyright (C) 2006, Michael Kerrisk
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