READLINK
Section: Linux Programmer's Manual (2)
Updated: 1997-08-21
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NAME
readlink - read value of a symbolic link
SYNOPSIS
#include <unistd.h>
int readlink(const char *path, char *buf, size_t bufsiz);
DESCRIPTION
readlink
places the contents of the symbolic link
path
in the buffer
buf,
which has size
bufsiz.
readlink
does not append a
NUL
character to
buf.
It will truncate the contents (to a length of
bufsiz
characters), in case the buffer is too small to hold all of the contents.
RETURN VALUE
The call returns the count of characters placed in the buffer
if it succeeds, or a -1 if an error occurs, placing the error
code in
errno.
ERRORS
- EACCES
-
Search permission is denied for a component of the path prefix.
(See also
path_resolution(2).)
- EFAULT
-
buf
extends outside the process's allocated address space.
- EINVAL
-
bufsiz
is not positive.
- EINVAL
-
The named file is not a symbolic link.
- EIO
-
An I/O error occurred while reading from the file system.
- ELOOP
-
Too many symbolic links were encountered in translating the pathname.
- ENAMETOOLONG
-
A pathname, or a component of a pathname, was too long.
- ENOENT
-
The named file does not exist.
- ENOMEM
-
Insufficient kernel memory was available.
- ENOTDIR
-
A component of the path prefix is not a directory.
CONFORMING TO
X/OPEN, 4.4BSD (the
readlink
function call appeared in 4.2BSD).
SEE ALSO
lstat(2),
path_resolution(2),
stat(2),
symlink(2)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- CONFORMING TO
-
- SEE ALSO
-
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