'query-dump-guest-memory-capability' is used to query the available formats of
'dump-guest-memory'. The output of the command will be like:
-> { "execute": "query-dump-guest-memory-capability" }
<- { "return": { "formats":
["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
Signed-off-by: Qiao Nuohan <qiaonuo...@cn.fujitsu.com>
---
dump.c | 33 +++++++++++++++++++++++++++++++++
qapi-schema.json | 9 +++++++++
qmp-commands.hx | 23 +++++++++++++++++++++++
3 files changed, 65 insertions(+), 0 deletions(-)
diff --git a/dump.c b/dump.c
index 2ebbb23..3a8d55e 100644
--- a/dump.c
+++ b/dump.c
@@ -1788,3 +1788,36 @@ void qmp_dump_guest_memory(bool paging, const char *file,
bool has_begin,
g_free(s);
}
+
+DumpGuestMemoryCapability *qmp_query_dump_guest_memory_capability(Error **errp)
+{
+ DumpGuestMemoryFormatList *item;
+ DumpGuestMemoryCapability *cap =
+ g_malloc0(sizeof(DumpGuestMemoryCapability));
+
+ /* elf is always available */
+ item = g_malloc0(sizeof(DumpGuestMemoryFormatList));
+ cap->formats = item;
+ item->value = DUMP_GUEST_MEMORY_FORMAT_ELF;
+
+ /* kdump-zlib is always available */
+ item->next = g_malloc0(sizeof(DumpGuestMemoryFormatList));
+ item = item->next;
+ item->value = DUMP_GUEST_MEMORY_FORMAT_KDUMP_ZLIB;
+
+ /* add new item if kdump-lzo is available */
+#ifdef CONFIG_LZO
+ item->next = g_malloc0(sizeof(DumpGuestMemoryFormatList));
+ item = item->next;
+ item->value = DUMP_GUEST_MEMORY_FORMAT_KDUMP_LZO;
+#endif
+
+ /* add new item if kdump-snappy is available */
+#ifdef CONFIG_SNAPPY
+ item->next = g_malloc0(sizeof(DumpGuestMemoryFormatList));
+ item = item->next;
+ item->value = DUMP_GUEST_MEMORY_FORMAT_KDUMP_SNAPPY;
+#endif
+
+ return cap;
+}
diff --git a/qapi-schema.json b/qapi-schema.json
index 7f62007..5d13bb3 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -2783,6 +2783,15 @@
'*length': 'int', '*format': 'DumpGuestMemoryFormat' } }
##
+# Since: 2.0
+##
+{ 'type': 'DumpGuestMemoryCapability',
+ 'data': {
+ 'formats': ['DumpGuestMemoryFormat'] } }
+
+{ 'command': 'query-dump-guest-memory-capability', 'returns':
'DumpGuestMemoryCapability' }
+
+##
# @netdev_add:
#
# Add a network backend.
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 019dde6..1f9ff69 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -829,6 +829,29 @@ Notes:
EQMP
{
+ .name = "query-dump-guest-memory-capability",
+ .args_type = "",
+ .mhandler.cmd_new =
qmp_marshal_input_query_dump_guest_memory_capability,
+ },
+
+SQMP
+query-dump-guest-memory-capability
+----------
+
+Show available format of 'dump-guest-memory'
+
+Example:
+
+-> { "execute": "query-dump-guest-memory-capability" }
+<- { "return": { "formats":
+ ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
+
+Note: This is a light-weight introspection to let management know the available
+ formats of dump-guest-memory.
+
+EQMP
+
+ {
.name = "netdev_add",
.args_type = "netdev:O",
.mhandler.cmd_new = qmp_netdev_add,
--
1.7.1
