[PATCH 18/20] qemu: Add qemuAssignDeviceShmemAlias and use it

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Signed-off-by: Martin Kletzander <mkletzan@xxxxxxxxxx>
---
 src/qemu/qemu_alias.c | 32 +++++++++++++++++++++++++++++++-
 src/qemu/qemu_alias.h |  4 ++++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_alias.c b/src/qemu/qemu_alias.c
index 9094f3b137ef..cc83fec26862 100644
--- a/src/qemu/qemu_alias.c
+++ b/src/qemu/qemu_alias.c
@@ -353,6 +353,36 @@ qemuAssignDeviceMemoryAlias(virDomainDefPtr def,


 int
+qemuAssignDeviceShmemAlias(virDomainDefPtr def,
+                           virDomainShmemDefPtr shmem,
+                           int idx)
+{
+    if (idx == -1) {
+        size_t i;
+        idx = 0;
+        for (i = 0; i < def->nshmems; i++) {
+            int thisidx;
+
+            if ((thisidx = qemuDomainDeviceAliasIndex(&def->shmems[i]->info,
+                                                      "shmem")) < 0) {
+                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                               _("Unable to determine device index "
+                                 "for shmem device"));
+                return -1;
+            }
+
+            if (thisidx >= idx)
+                idx = thisidx + 1;
+        }
+    }
+
+    if (virAsprintf(&shmem->info.alias, "shmem%d", idx) < 0)
+        return -1;
+    return 0;
+}
+
+
+int
 qemuAssignDeviceAliases(virDomainDefPtr def, virQEMUCapsPtr qemuCaps)
 {
     size_t i;
@@ -421,7 +451,7 @@ qemuAssignDeviceAliases(virDomainDefPtr def, virQEMUCapsPtr qemuCaps)
             return -1;
     }
     for (i = 0; i < def->nshmems; i++) {
-        if (virAsprintf(&def->shmems[i]->info.alias, "shmem%zu", i) < 0)
+        if (qemuAssignDeviceShmemAlias(def, def->shmems[i], i) < 0)
             return -1;
     }
     for (i = 0; i < def->nsmartcards; i++) {
diff --git a/src/qemu/qemu_alias.h b/src/qemu/qemu_alias.h
index c366d28afc47..11d9fde2ccc2 100644
--- a/src/qemu/qemu_alias.h
+++ b/src/qemu/qemu_alias.h
@@ -60,6 +60,10 @@ int qemuAssignDeviceRNGAlias(virDomainDefPtr def,
 int qemuAssignDeviceMemoryAlias(virDomainDefPtr def,
                                 virDomainMemoryDefPtr mems);

+int qemuAssignDeviceShmemAlias(virDomainDefPtr def,
+                               virDomainShmemDefPtr shmem,
+                               int idx);
+
 int qemuAssignDeviceAliases(virDomainDefPtr def, virQEMUCapsPtr qemuCaps);

 int qemuDomainDeviceAliasIndex(const virDomainDeviceInfo *info,
-- 
2.10.0

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