[libvirt] [PATCH 3/7] qemu: monitor: Remove JSON impls of drive_add and drive_del

[Peter Krempa]

qemu won't ever add those functions directly to QMP. They will be
replaced with 'blockdev-add' and 'blockdev-del' eventually. At this time
there's no need to keep the stubs around.

Additionally the drive_del stub in JSON contained dead code in the
attempt to report errors. (VIR_ERR_OPERATION_UNSUPPORTED was never
reported). Since the text impl does have the same message it is reported
anyways.
---
 src/qemu/qemu_monitor.c      | 19 +++++++++++--------
 src/qemu/qemu_monitor_json.c | 29 -----------------------------
 src/qemu/qemu_monitor_json.h |  6 ------
 src/qemu/qemu_monitor_text.c |  4 +---
 4 files changed, 12 insertions(+), 46 deletions(-)

diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 3d4443d..56df969 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -2796,6 +2796,13 @@ qemuMonitorGetAllPCIAddresses(qemuMonitorPtr mon,
 }


+/**
+ * qemuMonitorDriveDel:
+ * @mon: monitor object
+ * @drivestr: identifier of drive to delete.
+ *
+ * Attempts to remove a host drive.
+ * Returns 1 if unsupported, 0 if ok, and -1 on other failure */
 int
 qemuMonitorDriveDel(qemuMonitorPtr mon,
                     const char *drivestr)
@@ -2804,10 +2811,8 @@ qemuMonitorDriveDel(qemuMonitorPtr mon,

     QEMU_CHECK_MONITOR(mon);

-    if (mon->json)
-        return qemuMonitorJSONDriveDel(mon, drivestr);
-    else
-        return qemuMonitorTextDriveDel(mon, drivestr);
+    /* there won't be a direct replacement for drive_del in QMP */
+    return qemuMonitorTextDriveDel(mon, drivestr);
 }


@@ -2910,10 +2915,8 @@ qemuMonitorAddDrive(qemuMonitorPtr mon,

     QEMU_CHECK_MONITOR(mon);

-    if (mon->json)
-        return qemuMonitorJSONAddDrive(mon, drivestr);
-    else
-        return qemuMonitorTextAddDrive(mon, drivestr);
+    /* there won't ever be a direct QMP replacement for this function */
+    return qemuMonitorTextAddDrive(mon, drivestr);
 }


diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 8352e53..fad948f 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -3592,35 +3592,6 @@ int qemuMonitorJSONDelObject(qemuMonitorPtr mon,
 }


-int qemuMonitorJSONAddDrive(qemuMonitorPtr mon,
-                            const char *drivestr)
-{
-    /* XXX Update to use QMP, if QMP ever adds support for drive_add */
-    VIR_DEBUG("drive_add command not found, trying HMP");
-    return qemuMonitorTextAddDrive(mon, drivestr);
-}
-
-
-int qemuMonitorJSONDriveDel(qemuMonitorPtr mon,
-                            const char *drivestr)
-{
-    int ret;
-
-    /* XXX Update to use QMP, if QMP ever adds support for drive_del */
-    VIR_DEBUG("drive_del command not found, trying HMP");
-    if ((ret = qemuMonitorTextDriveDel(mon, drivestr)) < 0) {
-        virErrorPtr err = virGetLastError();
-        if (err && err->code == VIR_ERR_OPERATION_UNSUPPORTED) {
-            VIR_ERROR("%s",
-                      _("deleting disk is not supported.  "
-                        "This may leak data if disk is reassigned"));
-            ret = 1;
-            virResetLastError();
-        }
-    }
-    return ret;
-}
-
 int qemuMonitorJSONSetDrivePassphrase(qemuMonitorPtr mon,
                                       const char *alias,
                                       const char *passphrase)
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index 4068187..0b4916b 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -230,12 +230,6 @@ int qemuMonitorJSONAddObject(qemuMonitorPtr mon,
 int qemuMonitorJSONDelObject(qemuMonitorPtr mon,
                              const char *objalias);

-int qemuMonitorJSONAddDrive(qemuMonitorPtr mon,
-                            const char *drivestr);
-
-int qemuMonitorJSONDriveDel(qemuMonitorPtr mon,
-                            const char *drivestr);
-
 int qemuMonitorJSONSetDrivePassphrase(qemuMonitorPtr mon,
                                       const char *alias,
                                       const char *passphrase);
diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c
index 9703e36..7ec50e2 100644
--- a/src/qemu/qemu_monitor_text.c
+++ b/src/qemu/qemu_monitor_text.c
@@ -2457,8 +2457,7 @@ int qemuMonitorTextAddDrive(qemuMonitorPtr mon,
     return ret;
 }

-/* Attempts to remove a host drive.
- * Returns 1 if unsupported, 0 if ok, and -1 on other failure */
+
 int qemuMonitorTextDriveDel(qemuMonitorPtr mon,
                             const char *drivestr)
 {
@@ -2466,7 +2465,6 @@ int qemuMonitorTextDriveDel(qemuMonitorPtr mon,
     char *reply = NULL;
     char *safedev;
     int ret = -1;
-    VIR_DEBUG("TextDriveDel drivestr=%s", drivestr);

     if (!(safedev = qemuMonitorEscapeArg(drivestr)))
         goto cleanup;
-- 
2.7.3