/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h> char*mktemp(char *as){	char *s;	unsigned pid;	int i;	char err[ERRMAX]; 	pid = getpid();	s = as;	while(*s++)		;	s--;	while(*--s == 'X') {		*s = pid % 10 + '0';		pid = pid/10;	}	s++;	i = 'a';	while(access(as, 0) != -1) {		if (i == 'z')			return "/";		*s = i++;	}	err[0] = '\0';	errstr(err, sizeof err);	/* clear the error */	return as;}