[PATCH v2 7/7] tools: fix the wrong check when use virsh setvcpus --maximum

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From: Luyao Huang <lhuang@xxxxxxxxxx>

We will ignore --maximum option when only use setvcpus with
this option, like this (this error is another issue):

 # virsh setvcpus test3 --maximum 10
 error: Failed to create controller cpu for group: No such file or directory

this is because we do not set it in flags before we check if there is
a flags set.

Refactor these code and fix the logic.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1204033

Signed-off-by: Luyao Huang <lhuang@xxxxxxxxxx>
Signed-off-by: Pavel Hrdina <phrdina@xxxxxxxxxx>
---
 tools/virsh-domain.c | 30 ++++++------------------------
 1 file changed, 6 insertions(+), 24 deletions(-)

diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index b39f4b6..1938f56 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -6736,15 +6736,16 @@ cmdSetvcpus(vshControl *ctl, const vshCmd *cmd)
     VSH_EXCLUSIVE_OPTIONS_VAR(current, config);
     VSH_EXCLUSIVE_OPTIONS_VAR(guest, config);
 
+    VSH_REQUIRE_OPTION_VAR(maximum, config);
+
     if (config)
         flags |= VIR_DOMAIN_AFFECT_CONFIG;
     if (live)
         flags |= VIR_DOMAIN_AFFECT_LIVE;
     if (guest)
         flags |= VIR_DOMAIN_VCPU_GUEST;
-    /* none of the options were specified */
-    if (!current && flags == 0)
-        flags = -1;
+    if (maximum)
+        flags |= VIR_DOMAIN_VCPU_MAXIMUM;
 
     if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
         return false;
@@ -6754,30 +6755,11 @@ cmdSetvcpus(vshControl *ctl, const vshCmd *cmd)
         goto cleanup;
     }
 
-    if (flags == -1) {
+    /* none of the options were specified */
+    if (!current && flags == 0) {
         if (virDomainSetVcpus(dom, count) != 0)
             goto cleanup;
     } else {
-        /* If the --maximum flag was given, we need to ensure only the
-           --config flag is in effect as well */
-        if (maximum) {
-            vshDebug(ctl, VSH_ERR_DEBUG, "--maximum flag was given\n");
-
-            flags |= VIR_DOMAIN_VCPU_MAXIMUM;
-
-            /* If neither the --config nor --live flags were given, OR
-               if just the --live flag was given, we need to error out
-               warning the user that the --maximum flag can only be used
-               with the --config flag */
-            if (live || !config) {
-
-                /* Warn the user about the invalid flag combination */
-                vshError(ctl, _("--maximum must be used with --config only"));
-                goto cleanup;
-            }
-        }
-
-        /* Apply the virtual cpu changes */
         if (virDomainSetVcpusFlags(dom, count, flags) < 0)
             goto cleanup;
     }
-- 
2.0.5

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