[libvirt] [PATCH] lxc: simplify command when connecting lxc multi console

[Chen Hanxiao]

From: Chen Hanxiao <chenhanxiao at cn.fujitsu.com>

If we config more than one consoles for container,
we always named them as "consoleN".
We had to type a complex option "--devname consoleN".
This patch enables option "--devname N"
to be equal to  "--devname consoleN".

Signed-off-by: Chen Hanxiao <chenhanxiao at cn.fujitsu.com>
---
 src/lxc/lxc_driver.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 61a90ca..13213a5 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -2439,6 +2439,7 @@ lxcDomainOpenConsole(virDomainPtr dom,
     int ret = -1;
     virDomainChrDefPtr chr = NULL;
     size_t i;
+    char *tmp_name = NULL;
 
     virCheckFlags(0, -1);
 
@@ -2455,9 +2456,17 @@ lxcDomainOpenConsole(virDomainPtr dom,
     }
 
     if (dev_name) {
+        if (STRPREFIX(dev_name, "console")) {
+            if (VIR_STRDUP(tmp_name, dev_name) < 0)
+                goto cleanup;
+        } else {
+            if (virAsprintf(&tmp_name, "console%s", dev_name) < 0)
+                goto cleanup;
+        }
+
         for (i = 0; i < vm->def->nconsoles; i++) {
             if (vm->def->consoles[i]->info.alias &&
-                STREQ(vm->def->consoles[i]->info.alias, dev_name)) {
+                STREQ(vm->def->consoles[i]->info.alias, tmp_name)) {
                 chr = vm->def->consoles[i];
                 break;
             }
@@ -2490,6 +2499,7 @@ lxcDomainOpenConsole(virDomainPtr dom,
 cleanup:
     if (vm)
         virObjectUnlock(vm);
+    VIR_FREE(tmp_name);
     return ret;
 }
 
-- 
1.8.2.1