Subversion Repositories planix.SVN

#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;
}