realpath.c File Reference

#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>

Include dependency graph for realpath.c:

Functions
char *	Realpath (const char *_path)
	Makes an absolute filename, resolving symbolic links etc. More...

Function Documentation

Realpath()

char * Realpath

(

const char *

_path

)

Makes an absolute filename, resolving symbolic links etc.

Parameters

_path

Input path

Returns

real path, to be free()'d

POSIX 2004 states : If resolved_name is a null pointer, the behavior of realpath() is implementation-defined.

but POSIX 2008 : If resolved_name is a null pointer, the generated pathname shall be stored as a null-terminated string in a buffer allocated as if by a call to malloc().

So we assume all platforms now support passing NULL. If you find a platform where this is not the case, please add a new implementation with ifdef's.

References GFX2_malloc, NULL, and PATH_MAX.

Referenced by Analyze_command_line(), Calculate_relative_path(), Extract_path(), For_each_file(), Load_INI(), and Test_Realpath().