[PATCH 6/7] qemu: Support add bootindex = 0 to boothash when its bootIndexSpecified is true

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Support add bootindex = 0 to boothash and return 0 if duplicated bootindex = 0 is set.
It is nessary to add bootindex = 0 into boothash, otherwise libvirt will auto set boot dev,
which will cause bootindex unchangable. Meanwhile, bootindex = 0 means disable bootindex,
so it should be allowed to set duplicated bootindex = 0.

Signed-off-by: Jiang Jiacheng <jiangjiacheng@xxxxxxxxxx>
---
 src/conf/domain_postparse.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/conf/domain_postparse.c b/src/conf/domain_postparse.c
index 9a3e8f494c..2ba3186561 100644
--- a/src/conf/domain_postparse.c
+++ b/src/conf/domain_postparse.c
@@ -1031,7 +1031,7 @@ virDomainDefCollectBootOrder(virDomainDef *def G_GNUC_UNUSED,
     GHashTable *bootHash = data;
     g_autofree char *order = NULL;
 
-    if (info->bootIndex == 0)
+    if (info->bootIndex == 0 && !info->bootIndexSpecified)
         return 0;
 
     if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV &&
@@ -1045,6 +1045,12 @@ virDomainDefCollectBootOrder(virDomainDef *def G_GNUC_UNUSED,
     order = g_strdup_printf("%u", info->bootIndex);
 
     if (virHashLookup(bootHash, order)) {
+        /* 0 in the bootHash means cancel the bootIndex specified in
+         * XML, so it allowed to make more than one device use 0 with
+         * its bootIndexSpecified = true.
+         */
+        if (info->bootIndex == 0)
+            return 0;
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                        _("boot order '%s' used for more than one device"),
                        order);
-- 
2.33.0





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