[PATCH V1 21/26] migration: migrate_add_blocker_mode

[Steve Sistare]

Define a convenience function to add a migration blocker for a single mode.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
 include/migration/blocker.h | 7 +++++++
 migration/migration.c       | 5 +++++
 stubs/migr-blocker.c        | 5 +++++
 3 files changed, 17 insertions(+)

diff --git a/include/migration/blocker.h b/include/migration/blocker.h
index a687ac0..5c2e5d4 100644
--- a/include/migration/blocker.h
+++ b/include/migration/blocker.h
@@ -94,4 +94,11 @@ int migrate_add_blocker_normal(Error **reasonp, Error 
**errp);
  */
 int migrate_add_blocker_modes(Error **reasonp, Error **errp, MigMode mode, 
...);
 
+/**
+ * @migrate_add_blocker_mode - prevent a mode of migration from proceeding
+ *
+ * Like migrate_add_blocker_modes, but for a single mode.
+ */
+int migrate_add_blocker_mode(Error **reasonp, MigMode mode, Error **errp);
+
 #endif
diff --git a/migration/migration.c b/migration/migration.c
index 0d91531..4984dee 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1769,6 +1769,11 @@ int migrate_add_blocker_normal(Error **reasonp, Error 
**errp)
     return migrate_add_blocker_modes(reasonp, errp, MIG_MODE_NORMAL, -1);
 }
 
+int migrate_add_blocker_mode(Error **reasonp, MigMode mode, Error **errp)
+{
+    return migrate_add_blocker_modes(reasonp, errp, mode, -1);
+}
+
 int migrate_add_blocker_modes(Error **reasonp, Error **errp, MigMode mode, ...)
 {
     int modes;
diff --git a/stubs/migr-blocker.c b/stubs/migr-blocker.c
index 11cbff2..150eb62 100644
--- a/stubs/migr-blocker.c
+++ b/stubs/migr-blocker.c
@@ -16,6 +16,11 @@ int migrate_add_blocker_modes(Error **reasonp, Error **errp, 
MigMode mode, ...)
     return 0;
 }
 
+int migrate_add_blocker_mode(Error **reasonp, MigMode mode, Error **errp)
+{
+    return 0;
+}
+
 void migrate_del_blocker(Error **reasonp)
 {
 }
-- 
1.8.3.1