qemu: endjob returns a bool

Osier Yang pointed out that ever since commit 31cb030, the
signature of qemuDomainObjEndJob was changed to return a bool.
While comparison against 0 or > 0 still gives the right results,
it looks fishy; we also had one place that was comparing < 0
which is effectively dead code.

* src/qemu/qemu_migration.c (qemuMigrationPrepareAny): Fix dead
code bug.
(qemuMigrationBegin): Use more canonical form of bool check.
* src/qemu/qemu_driver.c (qemuAutostartDomain)
(qemuDomainCreateXML, qemuDomainSuspend, qemuDomainResume)
(qemuDomainShutdownFlags, qemuDomainReboot, qemuDomainReset)
(qemuDomainDestroyFlags, qemuDomainSetMemoryFlags)
(qemuDomainSetMemoryStatsPeriod, qemuDomainInjectNMI)
(qemuDomainSendKey, qemuDomainGetInfo, qemuDomainScreenshot)
(qemuDomainSetVcpusFlags, qemuDomainGetVcpusFlags)
(qemuDomainRestoreFlags, qemuDomainGetXMLDesc)
(qemuDomainCreateWithFlags, qemuDomainAttachDeviceFlags)
(qemuDomainUpdateDeviceFlags, qemuDomainDetachDeviceFlags)
(qemuDomainBlockResize, qemuDomainBlockStats)
(qemuDomainBlockStatsFlags, qemuDomainMemoryStats)
(qemuDomainMemoryPeek, qemuDomainGetBlockInfo)
(qemuDomainAbortJob, qemuDomainMigrateSetMaxDowntime)
(qemuDomainMigrateGetCompressionCache)
(qemuDomainMigrateSetCompressionCache)
(qemuDomainMigrateSetMaxSpeed)
(qemuDomainSnapshotCreateActiveInternal)
(qemuDomainRevertToSnapshot, qemuDomainSnapshotDelete)
(qemuDomainQemuMonitorCommand, qemuDomainQemuAttach)
(qemuDomainBlockJobImpl, qemuDomainBlockCopy)
(qemuDomainBlockCommit, qemuDomainOpenGraphics)
(qemuDomainGetBlockIoTune, qemuDomainGetDiskErrors)
(qemuDomainPMSuspendForDuration, qemuDomainPMWakeup)
(qemuDomainQemuAgentCommand, qemuDomainFSTrim): Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>
(cherry picked from commit 6cd15482586334a822d248dd8b94cee0635d3e64)

Conflicts:
	src/qemu/qemu_driver.c - some intermediate patches not backported

2 files changed, 54 insertions, 63 deletions

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 0716d88f97..440892dce4 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -292,7 +292,7 @@ qemuAutostartDomain(virDomainObjPtr vm,
                       err ? err->message : _("unknown error"));
         }
 
-        if (qemuDomainObjEndJob(data->driver, vm) == 0)
+        if (!qemuDomainObjEndJob(data->driver, vm))
             vm = NULL;
     }
 
@@ -1610,7 +1610,7 @@ static virDomainPtr qemuDomainCreateXML(virConnectPtr conn,
                          VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
                          start_flags) < 0) {
         virDomainAuditStart(vm, "booted", false);
-        if (qemuDomainObjEndJob(driver, vm) > 0)
+        if (qemuDomainObjEndJob(driver, vm))
             qemuDomainRemoveInactive(driver, vm);
         vm = NULL;
         goto cleanup;
@@ -1635,7 +1635,7 @@ static virDomainPtr qemuDomainCreateXML(virConnectPtr conn,
     if (dom) dom->id = vm->def->id;
 
     if (vm &&
-        qemuDomainObjEndJob(driver, vm) == 0)
+        !qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -1721,7 +1721,7 @@ static int qemuDomainSuspend(virDomainPtr dom) {
     ret = 0;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -1786,7 +1786,7 @@ static int qemuDomainResume(virDomainPtr dom) {
     ret = 0;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -1881,7 +1881,7 @@ static int qemuDomainShutdownFlags(virDomainPtr dom, unsigned int flags) {
     }
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -1991,7 +1991,7 @@ qemuDomainReboot(virDomainPtr dom, unsigned int flags)
     }
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -2034,7 +2034,7 @@ qemuDomainReset(virDomainPtr dom, unsigned int flags)
     priv->fakeReboot = false;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -2120,15 +2120,14 @@ qemuDomainDestroyFlags(virDomainPtr dom,
     virDomainAuditStop(vm, "destroyed");
 
     if (!vm->persistent) {
-        if (qemuDomainObjEndJob(driver, vm) > 0)
+        if (qemuDomainObjEndJob(driver, vm))
             qemuDomainRemoveInactive(driver, vm);
         vm = NULL;
     }
     ret = 0;
 
 endjob:
-    if (vm &&
-        qemuDomainObjEndJob(driver, vm) == 0)
+    if (vm && !qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -2273,7 +2272,7 @@ static int qemuDomainSetMemoryFlags(virDomainPtr dom, unsigned long newmem,
 
     ret = 0;
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -2347,7 +2346,7 @@ static int qemuDomainSetMemoryStatsPeriod(virDomainPtr dom, int period,
 
     ret = 0;
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -2395,10 +2394,8 @@ static int qemuDomainInjectNMI(virDomainPtr domain, unsigned int flags)
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0) {
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
-        goto cleanup;
-    }
 
 cleanup:
     if (vm)
@@ -2461,7 +2458,7 @@ static int qemuDomainSendKey(virDomainPtr domain,
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -2517,7 +2514,7 @@ static int qemuDomainGetInfo(virDomainPtr dom,
                 err = qemuMonitorGetBalloonInfo(priv->mon, &balloon);
                 qemuDomainObjExitMonitor(driver, vm);
             }
-            if (qemuDomainObjEndJob(driver, vm) == 0) {
+            if (!qemuDomainObjEndJob(driver, vm)) {
                 vm = NULL;
                 goto cleanup;
             }
@@ -3669,7 +3666,7 @@ endjob:
         unlink(tmp);
     VIR_FREE(tmp);
 
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -4285,7 +4282,7 @@ qemuDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
     ret = 0;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -4979,7 +4976,7 @@ qemuDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
         qemuDomainObjExitAgent(vm);
 
 endjob:
-        if (qemuDomainObjEndJob(driver, vm) == 0)
+        if (!qemuDomainObjEndJob(driver, vm))
             vm = NULL;
 
         if (ncpuinfo < 0)
@@ -5506,7 +5503,7 @@ qemuDomainRestoreFlags(virConnectPtr conn,
     if (virFileWrapperFdClose(wrapperFd) < 0)
         VIR_WARN("Failed to close %s", path);
 
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
     else if (ret < 0 && !vm->persistent) {
         qemuDomainRemoveInactive(driver, vm);
@@ -5726,7 +5723,7 @@ static char *qemuDomainGetXMLDesc(virDomainPtr dom,
             qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-            if (qemuDomainObjEndJob(driver, vm) == 0) {
+            if (!qemuDomainObjEndJob(driver, vm)) {
                 vm = NULL;
                 goto cleanup;
             }
@@ -6127,7 +6124,7 @@ qemuDomainCreateWithFlags(virDomainPtr dom, unsigned int flags)
     ret = 0;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -7166,7 +7163,7 @@ static int qemuDomainAttachDeviceFlags(virDomainPtr dom, const char *xml,
     }
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -7310,7 +7307,7 @@ static int qemuDomainUpdateDeviceFlags(virDomainPtr dom,
     }
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -7448,7 +7445,7 @@ static int qemuDomainDetachDeviceFlags(virDomainPtr dom, const char *xml,
     }
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -9148,7 +9145,7 @@ qemuDomainBlockResize(virDomainPtr dom,
     ret = 0;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -9219,7 +9216,7 @@ qemuDomainBlockStats(virDomainPtr dom,
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -9387,7 +9384,7 @@ qemuDomainBlockStatsFlags(virDomainPtr dom,
     *nparams = tmp;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -9782,7 +9779,7 @@ qemuDomainMemoryStats(virDomainPtr dom,
         }
     }
 
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -9925,7 +9922,7 @@ qemuDomainMemoryPeek(virDomainPtr dom,
     ret = 0;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -10080,7 +10077,7 @@ qemuDomainGetBlockInfo(virDomainPtr dom,
             ret = 0;
         }
 
-        if (qemuDomainObjEndJob(driver, vm) == 0)
+        if (!qemuDomainObjEndJob(driver, vm))
             vm = NULL;
     } else {
         ret = 0;
@@ -11370,7 +11367,7 @@ static int qemuDomainAbortJob(virDomainPtr dom) {
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -11421,7 +11418,7 @@ qemuDomainMigrateSetMaxDowntime(virDomainPtr dom,
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -11476,7 +11473,7 @@ qemuDomainMigrateGetCompressionCache(virDomainPtr dom,
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -11532,7 +11529,7 @@ qemuDomainMigrateSetCompressionCache(virDomainPtr dom,
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -11580,7 +11577,7 @@ qemuDomainMigrateSetMaxSpeed(virDomainPtr dom,
             priv->migMaxBandwidth = bandwidth;
 
 endjob:
-        if (qemuDomainObjEndJob(driver, vm) == 0)
+        if (!qemuDomainObjEndJob(driver, vm))
             vm = NULL;
     } else {
         priv->migMaxBandwidth = bandwidth;
@@ -11933,7 +11930,7 @@ cleanup:
     }
 
 endjob:
-    if (vm && qemuDomainObjEndJob(driver, vm) == 0) {
+    if (vm && !qemuDomainObjEndJob(driver, vm)) {
         /* Only possible if a transient vm quit while our locks were down,
          * in which case we don't want to save snapshot metadata.  */
         *vmptr = NULL;
@@ -13515,7 +13512,7 @@ static int qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
 
         if (qemuDomainSnapshotRevertInactive(driver, vm, snap) < 0) {
             if (!vm->persistent) {
-                if (qemuDomainObjEndJob(driver, vm) > 0)
+                if (qemuDomainObjEndJob(driver, vm))
                     qemuDomainRemoveInactive(driver, vm);
                 vm = NULL;
                 goto cleanup;
@@ -13542,7 +13539,7 @@ static int qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
             virDomainAuditStart(vm, "from-snapshot", rc >= 0);
             if (rc < 0) {
                 if (!vm->persistent) {
-                    if (qemuDomainObjEndJob(driver, vm) > 0)
+                    if (qemuDomainObjEndJob(driver, vm))
                         qemuDomainRemoveInactive(driver, vm);
                     vm = NULL;
                     goto cleanup;
@@ -13565,7 +13562,7 @@ static int qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
     ret = 0;
 
 endjob:
-    if (vm && qemuDomainObjEndJob(driver, vm) == 0)
+    if (vm && !qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -13731,7 +13728,7 @@ static int qemuDomainSnapshotDelete(virDomainSnapshotPtr snapshot,
     }
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -13784,7 +13781,7 @@ static int qemuDomainQemuMonitorCommand(virDomainPtr domain, const char *cmd,
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0) {
+    if (!qemuDomainObjEndJob(driver, vm)) {
         vm = NULL;
     }
 
@@ -13873,7 +13870,7 @@ static virDomainPtr qemuDomainQemuAttach(virConnectPtr conn,
     if (dom) dom->id = vm->def->id;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0) {
+    if (!qemuDomainObjEndJob(driver, vm)) {
         vm = NULL;
         goto cleanup;
     }
@@ -14370,7 +14367,7 @@ qemuDomainBlockJobImpl(virDomainObjPtr vm,
     }
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0) {
+    if (!qemuDomainObjEndJob(driver, vm)) {
         vm = NULL;
         goto cleanup;
     }
@@ -14601,10 +14598,8 @@ endjob:
     if (need_unlink && unlink(dest))
         VIR_WARN("unable to unlink just-created %s", dest);
     VIR_FREE(mirror);
-    if (qemuDomainObjEndJob(driver, vm) == 0) {
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
-        goto cleanup;
-    }
 
 cleanup:
     VIR_FREE(device);
@@ -14793,10 +14788,8 @@ endjob:
                                               top_parent,
                                               VIR_DISK_CHAIN_READ_ONLY);
     }
-    if (qemuDomainObjEndJob(driver, vm) == 0) {
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
-        goto cleanup;
-    }
 
 cleanup:
     VIR_FREE(device);
@@ -14858,10 +14851,8 @@ qemuDomainOpenGraphics(virDomainPtr dom,
     ret = qemuMonitorOpenGraphics(priv->mon, protocol, fd, "graphicsfd",
                                   (flags & VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH) != 0);
     qemuDomainObjExitMonitor(driver, vm);
-    if (qemuDomainObjEndJob(driver, vm) == 0) {
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
-        goto cleanup;
-    }
 
 cleanup:
     if (vm)
@@ -15176,7 +15167,7 @@ qemuDomainGetBlockIoTune(virDomainPtr dom,
     ret = 0;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -15250,7 +15241,7 @@ qemuDomainGetDiskErrors(virDomainPtr dom,
     ret = n;
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -15781,7 +15772,7 @@ qemuDomainPMSuspendForDuration(virDomainPtr dom,
     qemuDomainObjExitAgent(vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -15830,7 +15821,7 @@ qemuDomainPMWakeup(virDomainPtr dom,
     qemuDomainObjExitMonitor(driver, vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -15916,7 +15907,7 @@ qemuDomainQemuAgentCommand(virDomainPtr domain,
         VIR_FREE(result);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
@@ -15986,7 +15977,7 @@ qemuDomainFSTrim(virDomainPtr dom,
     qemuDomainObjExitAgent(vm);
 
 endjob:
-    if (qemuDomainObjEndJob(driver, vm) == 0)
+    if (!qemuDomainObjEndJob(driver, vm))
         vm = NULL;
 
 cleanup:
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index a8240e9492..dba9205dca 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -2128,7 +2128,7 @@ endjob:
         if (qemuMigrationJobFinish(driver, vm) == 0)
             vm = NULL;
     } else {
-        if (qemuDomainObjEndJob(driver, vm) == 0)
+        if (!qemuDomainObjEndJob(driver, vm))
             vm = NULL;
     }
     goto cleanup;
@@ -2337,7 +2337,7 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver,
                          VIR_QEMU_PROCESS_START_PAUSED |
                          VIR_QEMU_PROCESS_START_AUTODESTROY) < 0) {
         virDomainAuditStart(vm, "migrated", false);
-        if (qemuDomainObjEndJob(driver, vm) < 0)
+        if (!qemuDomainObjEndJob(driver, vm))
             vm = NULL;
         goto endjob;
     }