[PATCH] fuse: stricter mount option checking
Check for the presence of all mandatory mount options.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index c8e54c0..298c1d4 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -32,6 +32,10 @@
unsigned rootmode;
unsigned user_id;
unsigned group_id;
+ unsigned fd_present : 1;
+ unsigned rootmode_present : 1;
+ unsigned user_id_present : 1;
+ unsigned group_id_present : 1;
unsigned flags;
unsigned max_read;
};
@@ -274,7 +278,6 @@
{
char *p;
memset(d, 0, sizeof(struct fuse_mount_data));
- d->fd = -1;
d->max_read = ~0;
while ((p = strsep(&opt, ",")) != NULL) {
@@ -290,24 +293,28 @@
if (match_int(&args[0], &value))
return 0;
d->fd = value;
+ d->fd_present = 1;
break;
case OPT_ROOTMODE:
if (match_octal(&args[0], &value))
return 0;
d->rootmode = value;
+ d->rootmode_present = 1;
break;
case OPT_USER_ID:
if (match_int(&args[0], &value))
return 0;
d->user_id = value;
+ d->user_id_present = 1;
break;
case OPT_GROUP_ID:
if (match_int(&args[0], &value))
return 0;
d->group_id = value;
+ d->group_id_present = 1;
break;
case OPT_DEFAULT_PERMISSIONS:
@@ -332,7 +339,9 @@
return 0;
}
}
- if (d->fd == -1)
+
+ if (!d->fd_present || !d->rootmode_present ||
+ !d->user_id_present || !d->group_id_present)
return 0;
return 1;