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- #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.
- */
- int
- hasperm(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;
- }
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