/*  * 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>#include <auth.h>#include <fcall.h>#include <thread.h>#include <9p.h> /* * simplistic permission checking.  assume that * each user is the leader of her own group. */inthasperm(File *f, char *uid, int p){	int m; 	m = f->mode & 7;	/* other */	if((p & m) == p)		return 1; 	if(strcmp(f->uid, uid) == 0) {		m |= (f->mode>>6) & 7;		if((p & m) == p)			return 1;	} 	if(strcmp(f->gid, uid) == 0) {		m |= (f->mode>>3) & 7;		if((p & m) == p)			return 1;	} 	return 0;}