15.10.2012 23:00, Ben Hutchings пишет:
On Mon, 2012-10-15 at 19:59 +0400, Stanislav Kinsbursky wrote:
New SHM_SET command will be interpreted exactly as IPC_SET, but also will
update key, cuid and cgid values. IOW, it allows to change existent key value.
The fact, that key is not used is checked before update. Otherwise -EEXIST is
returned.
[...]
--- a/ipc/shm.c
+++ b/ipc/shm.c
[...]
@@ -759,6 +763,10 @@ static int shmctl_down(struct ipc_namespace *ns, int
shmid, int cmd,
case IPC_RMID:
do_shm_rmid(ns, ipcp);
goto out_up;
+ case SHM_SET:
+ err = ipc_update_key(&shm_ids(ns), &shmid64.shm_perm, ipcp);
+ if (err)
+ break;
[...]
Please add /* fall through */ here, and in the similar cases in patches
5 and 7, to make clear that it's deliberate.
Sure, thanks.
Ben.
--
Best regards,
Stanislav Kinsbursky
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