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SYMLINKAT
Section: Linux Programmer's Manual (2)
Updated: 2009-12-13
Index
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NAME
symlinkat - create a symbolic link relative to a directory file descriptor
SYNOPSIS
#include <fcntl.h> /* Definition of AT_* constants */
#include <stdio.h>
int symlinkat(const char *oldpath, int newdirfd, const char *newpath);
Feature Test Macro Requirements for glibc (see
feature_test_macros(7)):
symlinkat():
-
- Since glibc 2.10:
-
_XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
- Before glibc 2.10:
-
_ATFILE_SOURCE
DESCRIPTION
The
symlinkat()
system call operates in exactly the same way as
symlink(2),
except for the differences described in this manual page.
If the pathname given in
newpath
is relative, then it is interpreted relative to the directory
referred to by the file descriptor
newdirfd
(rather than relative to the current working directory of
the calling process, as is done by
symlink(2)
for a relative pathname).
If
newpath
is relative and
newdirfd
is the special value
AT_FDCWD,
then
newpath
is interpreted relative to the current working
directory of the calling process (like
symlink(2)).
If
newpath
is absolute, then
newdirfd
is ignored.
RETURN VALUE
On success,
symlinkat()
returns 0.
On error, -1 is returned and
errno
is set to indicate the error.
ERRORS
The same errors that occur for
symlink(2)
can also occur for
symlinkat().
The following additional errors can occur for
symlinkat():
- EBADF
-
newdirfd
is not a valid file descriptor.
- ENOTDIR
-
newpath
is relative and
newdirfd
is a file descriptor referring to a file other than a directory.
VERSIONS
symlinkat()
was added to Linux in kernel 2.6.16.
CONFORMING TO
POSIX.1-2008.
NOTES
See
openat(2)
for an explanation of the need for
symlinkat().
SEE ALSO
openat(2),
symlink(2),
path_resolution(7),
symlink(7)
COLOPHON
This page is part of release 3.27 of the Linux
man-pages
project.
A description of the project,
and information about reporting bugs,
can be found at
http://www.kernel.org/doc/man-pages/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- VERSIONS
-
- CONFORMING TO
-
- NOTES
-
- SEE ALSO
-
- COLOPHON
-
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