1 #include <u.h>
2 #include <libc.h>
3 #include <fcall.h>
4 #include <thread.h>
5 #include <9p.h>
6 
7 /*
8  * simplistic permission checking.  assume that
9  * each user is the leader of her own group.
10  */
11 int
12 hasperm(File *f, char *uid, int p)
13 {
14 	int m;
15 
16 	m = f->dir.mode & 7;	/* other */
17 	if((p & m) == p)
18 		return 1;
19 
20 	if(strcmp(f->dir.uid, uid) == 0) {
21 		m |= (f->dir.mode>>6) & 7;
22 		if((p & m) == p)
23 			return 1;
24 	}
25 
26 	if(strcmp(f->dir.gid, uid) == 0) {
27 		m |= (f->dir.mode>>3) & 7;
28 		if((p & m) == p)
29 			return 1;
30 	}
31 
32 	return 0;
33 }