[Xen-devel] [PATCH] xl: avoid creating domains with duplicate names

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Do not create the domain if another domain with the same name is already
running.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

diff -r 829855751e19 tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c  Tue Jan 25 15:05:20 2011 +0000
+++ b/tools/libxl/xl_cmdimpl.c  Tue Jan 25 15:12:21 2011 +0000
@@ -569,6 +569,7 @@ static void parse_config_data(const char
     XLU_ConfigList *vbds, *nics, *pcis, *cvfbs, *net2s, *cpuids;
     int pci_power_mgmt = 0;
     int pci_msitranslate = 1;
+    uint32_t domid_e;
     int e;
 
     libxl_domain_create_info *c_info = &d_config->c_info;
@@ -598,6 +599,11 @@ static void parse_config_data(const char
 
     if (xlu_cfg_replace_string (config, "name", &c_info->name))
         c_info->name = strdup("test");
+    e = libxl_name_to_domid(&ctx, c_info->name, &domid_e);
+    if (!e) {
+        fprintf(stderr, "A domain with name \"%s\" already exists.\n", 
c_info->name);
+        exit(1);
+    }
 
     if (!xlu_cfg_get_string (config, "uuid", &buf) ) {
         if ( libxl_uuid_from_string(&c_info->uuid, buf) ) {

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