diff options
| author | Philipp Reisner <philipp.reisner@linbit.com> | 2009-10-06 09:30:14 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-10-06 09:30:14 +0200 |
| commit | 9f5180e5c331d7b3ccc35e1a78072235d38f9f34 (patch) | |
| tree | d4d116f9bee360007c15b50fee86bf3a27566102 | |
| parent | 25d2d4edfa509b69fe4832094b8a07e634363ba3 (diff) | |
drbd: Work on permission enforcement
Now we have the capabilities of the sending process available,
use them to enforce CAP_SYS_ADMIN.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 7 | ||||
| -rw-r--r-- | include/linux/drbd.h | 1 |
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 73c55ccb629..22538d9628f 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -2000,7 +2000,7 @@ static struct cn_handler_struct cnd_table[] = { [ P_new_c_uuid ] = { &drbd_nl_new_c_uuid, 0 }, }; -static void drbd_connector_callback(struct cn_msg *req) +static void drbd_connector_callback(struct cn_msg *req, struct netlink_skb_parms *nsp) { struct drbd_nl_cfg_req *nlp = (struct drbd_nl_cfg_req *)req->data; struct cn_handler_struct *cm; @@ -2017,6 +2017,11 @@ static void drbd_connector_callback(struct cn_msg *req) return; } + if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN)) { + retcode = ERR_PERM; + goto fail; + } + mdev = ensure_mdev(nlp); if (!mdev) { retcode = ERR_MINOR_INVALID; diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 69dc711f37b..233db5c18b8 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -138,6 +138,7 @@ enum drbd_ret_codes { ERR_VERIFY_RUNNING = 149, /* DRBD 8.2 only */ ERR_DATA_NOT_CURRENT = 150, ERR_CONNECTED = 151, /* DRBD 8.3 only */ + ERR_PERM = 152, /* insert new ones above this line */ AFTER_LAST_ERR_CODE |