osf1 man page for realpath

realpath(3)						     Library Functions Manual						       realpath(3)

NAME
       realpath - Resolves pathname

SYNOPSIS
       #include <stdlib.h>

       char *realpath(
	       const char *file_name,
	       char *resolved_name);

STANDARDS
       Interfaces documented on this reference page conform to industry standards as follows:

       realpath():  POSIX.1, XPG4-UNIX

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

DESCRIPTION
       The  realpath()	function  derives,  from the file pointed to by file_name, an absolute pathname that names the same file, whose resolution
       does not involve ".", "..", or symbolic links.  The generated pathname is stored, up to a maximum of PATH_MAX bytes, in the buffer  pointed
       to by resolved_name.

RETURN VALUES
       Upon  successful completion, the realpath() function returns a pointer to the resolved name.  Otherwise,  realpath() returns a null pointer
       and sets errno to indicate the error, and the contents of the buffer pointed to by resolved_name are undefined.

ERRORS
       If the realpath() function fails, errno may be set to one of the following values: Read or search permission was denied for a component	of
       file_name.   Either  the file_name or resolved_name argument is a null pointer.	An error occurred while reading from the file system.  Too
       many symbolic links were encountered in resolving path.	The file_name argument is longer than PATH_MAX or a pathname component	is  longer
       than NAME_MAX.  A component of file_name does not name an existing file or file_name points to an empty string.	Insufficient storage space
       available.  A component of either path prefix is not a directory.

RELATED INFORMATION
       Functions: getcwd(3), sysconf(3)

       Standards: standards(5) delim off

																       realpath(3)