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authorPaolo Bonzini2018-02-28 19:01:40 +0100
committerPaolo Bonzini2018-06-28 19:05:35 +0200
commite2c81a45101fdddfd47477a1805806f2c76639bf (patch)
tree2b54aaa4ca86943ac6036c12f6971dcbcf9f06e2 /scsi
parentpr-manager: add query-pr-managers QMP command (diff)
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pr-manager-helper: report event on connection/disconnection
Let management know if there were any problems communicating with qemu-pr-helper. The event is edge-triggered, and is sent every time the connection status of the pr-manager-helper object changes. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'scsi')
-rw-r--r--scsi/pr-manager-helper.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/scsi/pr-manager-helper.c b/scsi/pr-manager-helper.c
index b11481be9e..519a296905 100644
--- a/scsi/pr-manager-helper.c
+++ b/scsi/pr-manager-helper.c
@@ -17,6 +17,7 @@
#include "io/channel.h"
#include "io/channel-socket.h"
#include "pr-helper.h"
+#include "qapi/qapi-events-block.h"
#include <scsi/sg.h>
@@ -38,6 +39,16 @@ typedef struct PRManagerHelper {
QIOChannel *ioc;
} PRManagerHelper;
+static void pr_manager_send_status_changed_event(PRManagerHelper *pr_mgr)
+{
+ char *id = object_get_canonical_path_component(OBJECT(pr_mgr));
+
+ if (id) {
+ qapi_event_send_pr_manager_status_changed(id, !!pr_mgr->ioc,
+ &error_abort);
+ }
+}
+
/* Called with lock held. */
static int pr_manager_helper_read(PRManagerHelper *pr_mgr,
void *buf, int sz, Error **errp)
@@ -47,6 +58,7 @@ static int pr_manager_helper_read(PRManagerHelper *pr_mgr,
if (r < 0) {
object_unref(OBJECT(pr_mgr->ioc));
pr_mgr->ioc = NULL;
+ pr_manager_send_status_changed_event(pr_mgr);
return -EINVAL;
}
@@ -72,6 +84,7 @@ static int pr_manager_helper_write(PRManagerHelper *pr_mgr,
assert(n_written != QIO_CHANNEL_ERR_BLOCK);
object_unref(OBJECT(pr_mgr->ioc));
pr_mgr->ioc = NULL;
+ pr_manager_send_status_changed_event(pr_mgr);
return n_written < 0 ? -EINVAL : 0;
}
@@ -127,6 +140,7 @@ static int pr_manager_helper_initialize(PRManagerHelper *pr_mgr,
goto out_close;
}
+ pr_manager_send_status_changed_event(pr_mgr);
return 0;
out_close: