centos man page for canonicalize_file_name

CANONICALIZE_FILE_NAME(3)				     Linux Programmer's Manual					 CANONICALIZE_FILE_NAME(3)

NAME
       canonicalize_file_name - return the canonicalized absolute pathname

SYNOPSIS
       #define _GNU_SOURCE	   /* See feature_test_macros(7) */
       #include <stdlib.h>

       char *canonicalize_file_name(const char *path);

DESCRIPTION
       The  canonicalize_file_name()  function	returns  a  null-terminated string containing the canonicalized absolute pathname corresponding to
       path.  In the returned string, symbolic links are resolved, as are .  and ..  pathname components.  Consecutive slash  (/)  characters  are
       replaced by a single slash.

       The  returned  string  is  dynamically allocated by canonicalize_file_name() and the caller should deallocate it with free(3) when it is no
       longer required.

       The call canonicalize_file_name(path) is equivalent to the call:

	   realpath(path, NULL);

RETURN VALUE
       On success, canonicalize_file_name() returns a null-terminated string.  On error (e.g., a pathname component  is  unreadable  or  does  not
       exist), canonicalize_file_name() returns NULL and sets errno to indicate the error.

ERRORS
       See realpath(3).

CONFORMING TO
       This function is a GNU extension.

SEE ALSO
       readlink(2), realpath(3)

COLOPHON
       This  page is part of release 3.53 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/.

GNU
								    2013-05-11						 CANONICALIZE_FILE_NAME(3)