[PATCH 13/31] imsm: Do not accept messages sent by mdadm

Messages update_reshape_cancel and update_reshape_set_slots ara intended to send by managemon.
If those message would be issued by mdadm prepare_message() is called in managemon for them.
In such cases set update_prepared to '-1' to indicate process_message() to not proceed such messages.

Signed-off-by: Adam Kwolek
---

mdadm/mdadm/super-intel.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/mdadm/mdadm/super-intel.c b/mdadm/mdadm/super-intel.c index fa5ab8c..3d14f1f 100644
--- a/mdadm/mdadm/super-intel.c
+++ b/mdadm/mdadm/super-intel.c
@@ -5402,6 +5402,13 @@ update_reshape_exit:
break;
}

+ /* do not accept this update type sent by mdadm
+ */
+ if (u->update_prepared == -1) {
+ dprintf("imsm: message is sent by mdadm. cannot accept\n\n");
+ break;
+ }
+
if (imsm_reshape_array_set_slots(a) > -1)
super->updates_pending++;
break;
@@ -5425,6 +5432,13 @@ update_reshape_exit:
if (a == NULL)
break;

+ /* do not accept this update type sent by mdadm
+ */
+ if (u->update_prepared == -1) {
+ dprintf("imsm: message is sent by mdadm. cannot accept\n\n");
+ break;
+ }
+
inst = a->info.container_member;
dev = get_imsm_dev(super, inst);
map_1 = get_imsm_map(dev, 0);
@@ -5881,9 +5895,19 @@ static void imsm_prepare_update(struct supertype *st,
break;
}
case update_reshape_set_slots: {
+ struct imsm_update_reshape *u = (void *)update->buf;
+
+ /* do not accept this update type sent by mdadm
+ */
+ u->update_prepared = -1;
break;
}
case update_reshape_cancel: {
+ struct imsm_update_reshape *u = (void *)update->buf;
+
+ /* do not accept this update type sent by mdadm
+ */
+ u->update_prepared = -1;
break;
}
case update_level: {

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