View Source: readlink(2) - Waikato Linux Users Group

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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(2) 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
;[ENOTDIR]: A component of the path prefix is not a directory.
;[EINVAL]: ''bufsiz'' is not positive.
;[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(2) function call appeared in 4.2BSD).

!!SEE ALSO
stat(2), lstat(2), symlink(2)

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Last edited on Sunday, March 16, 2003 9:20:19 pm by PerryLorier

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