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.
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 the global variable
errno.
ERRORS
readlink();
will fail if:
[ENOTDIR]
A component of the path prefix is not a directory.
[ENAMETOOLONG]
A component of a pathname exceeded
{NAME_MAX}
characters, or an entire path name exceeded
{PATH_MAX}
characters.
[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
or
path
extends outside the process's allocated address space.