diff options
Diffstat (limited to 'src/lib9p/uid.c')
-rw-r--r-- | src/lib9p/uid.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/lib9p/uid.c b/src/lib9p/uid.c new file mode 100644 index 00000000..84b98bde --- /dev/null +++ b/src/lib9p/uid.c @@ -0,0 +1,34 @@ +#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->dir.mode & 7; /* other */ + if((p & m) == p) + return 1; + + if(strcmp(f->dir.uid, uid) == 0) { + m |= (f->dir.mode>>6) & 7; + if((p & m) == p) + return 1; + } + + if(strcmp(f->dir.gid, uid) == 0) { + m |= (f->dir.mode>>3) & 7; + if((p & m) == p) + return 1; + } + + return 0; +} |