[libvirt] [PATCH 02/12] qemu: Add helper to assign RNG device aliases

[Peter Krempa]

From: Luyao Huang <lhuang at redhat.com>

This function is used to assign an alias for a RNG device. It will be
later reused when hotplugging RNGs.

Signed-off-by: Luyao Huang <lhuang at redhat.com>
Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
 src/qemu/qemu_command.c | 13 ++++++++++++-
 src/qemu/qemu_command.h |  1 +
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 3b6eddc..4447b9b 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1025,6 +1025,17 @@ qemuGetNextChrDevIndex(virDomainDefPtr def,


 int
+qemuAssignDeviceRNGAlias(virDomainRNGDefPtr rng,
+                         size_t idx)
+{
+    if (virAsprintf(&rng->info.alias, "rng%zu", idx) < 0)
+        return -1;
+
+    return 0;
+}
+
+
+int
 qemuAssignDeviceChrAlias(virDomainDefPtr def,
                          virDomainChrDefPtr chr,
                          ssize_t idx)
@@ -1149,7 +1160,7 @@ qemuAssignDeviceAliases(virDomainDefPtr def, virQEMUCapsPtr qemuCaps)
             return -1;
     }
     for (i = 0; i < def->nrngs; i++) {
-        if (virAsprintf(&def->rngs[i]->info.alias, "rng%zu", i) < 0)
+        if (qemuAssignDeviceRNGAlias(def->rngs[i], i) < 0)
             return -1;
     }
     if (def->tpm) {
diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h
index ae36bd8..d8fea65 100644
--- a/src/qemu/qemu_command.h
+++ b/src/qemu/qemu_command.h
@@ -269,6 +269,7 @@ int qemuAssignDeviceRedirdevAlias(virDomainDefPtr def, virDomainRedirdevDefPtr r
 int qemuAssignDeviceChrAlias(virDomainDefPtr def,
                              virDomainChrDefPtr chr,
                              ssize_t idx);
+int qemuAssignDeviceRNGAlias(virDomainRNGDefPtr rng, size_t idx);

 int
 qemuParseKeywords(const char *str,
-- 
2.2.2