shithub: npe

ref: 3aef5b01a473555c92bba327ede73960daec22a8
dir: /libnpe/realpath.c/

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#include <u.h>
#include <libc.h>
#include "limits.h"

char *
realpath(char *path, char *buffer)
{
	char *s, p[PATH_MAX];
	int f;

	s = nil;
	if((f = open(path, OREAD)) >= 0){
		if(fd2path(f, p, sizeof(p)) == 0)
			s = buffer == nil ? strdup(p) : strcpy(buffer, p);
		close(f);
	}
	if(s == nil && strlen(path) < sizeof(p)){
		strcpy(buffer, path);
		s = cleanname(buffer);
	}

	return s;
}