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qom: Change object_get_canonical_path_component() not to malloc

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object_get_canonical_path_component() returns a malloced copy of a
property name on success, null on failure.

19 of its 25 callers immediately free the returned copy.

Change object_get_canonical_path_component() to return the property
name directly.  Since modifying the name would be wrong, adjust the
return type to const char *.

Drop the free from the 19 callers become simpler, add the g_strdup()
to the other six.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200714160202.3121879-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
This commit is contained in:
Markus Armbruster 2020-07-14 18:02:00 +02:00
parent af3d69058e
commit 7a309cc95b
23 changed files with 41 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

2
hw/core/machine-qmp-cmds.c
View file

@ -315,7 +315,7 @@ static int query_memdev(Object *obj, void *opaque)
m->value = g_malloc0(sizeof(*m->value));
m->value->id = object_get_canonical_path_component(obj);
m->value->id = g_strdup(object_get_canonical_path_component(obj));
m->value->has_id = !!m->value->id;
m->value->size = object_property_get_uint(obj, "size",

5
hw/core/machine.c
View file

@ -1073,9 +1073,8 @@ MemoryRegion *machine_consume_memdev(MachineState *machine,
MemoryRegion *ret = host_memory_backend_get_memory(backend);
if (memory_region_is_mapped(ret)) {
char *path = object_get_canonical_path_component(OBJECT(backend));
error_report("memory backend %s can't be used multiple times.", path);
g_free(path);
error_report("memory backend %s can't be used multiple times.",
object_get_canonical_path_component(OBJECT(backend)));
exit(EXIT_FAILURE);
}
host_memory_backend_set_mapped(backend, true);