READLINK (2)
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 VALUES
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
ENOTDIR
A component of the path prefix is not a directory.
EINVAL
ENAMETOOLONG
A pathname, or a component of a pathname, was too long.
ENOENT
The named file does not exist.
EACCES
Search permission is denied for a component of the path prefix.
ELOOP
Too many symbolic links were encountered in translating the pathname.
EINVAL
The named file is not a symbolic link.
EIO
An I/O error occurred while reading from the file system.
EFAULT
buf
extends outside the process's allocated address space.
ENOMEM
Insufficient kernel memory was available.
CONFORMING TO
X/OPEN, 4.4BSD (the
readlink
function call appeared in 4.2BSD).
SEE ALSO
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