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qom: support orphan objects in object_get_canonical_path 

Mostly a rewrite, in order to keep the loop simple.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2018-05-30 18:16:04 +02:00
parent 24ed117232
commit e40077fd2c
1 changed files with 20 additions and 16 deletions
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36
qom/object.c
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@ -1669,25 +1669,29 @@ gchar *object_get_canonical_path(Object *obj)
Object *root = object_get_root();
char *newpath, *path = NULL;
while (obj != root) {
char *component = object_get_canonical_path_component(obj);
if (path) {
newpath = g_strdup_printf("%s/%s", component, path);
g_free(component);
g_free(path);
path = newpath;
} else {
path = component;
}
obj = obj->parent;
if (obj == root) {
return g_strdup("/");
}
newpath = g_strdup_printf("/%s", path ? path : "");
g_free(path);
do {
char *component = object_get_canonical_path_component(obj);
return newpath;
if (!component) {
/* A canonical path must be complete, so discard what was
* collected so far.
*/
g_free(path);
return NULL;
}
newpath = g_strdup_printf("/%s%s", component, path ? path : "");
g_free(path);
g_free(component);
path = newpath;
obj = obj->parent;
} while (obj != root);
return path;
}
Object *object_resolve_path_component(Object *parent, const gchar *part)