'query-dump-guest-memory-capability' is used to query whether option 'format'
is available for 'dump-guest-memory' and the available format. The output
of the command will be like:
-> { "execute": "query-dump-guest-memory-capability" }
<- { "return": {
"format-option": "optional",
"capabilities": [
{"available": true, "format": "elf"},
{"available": true, "format": "kdump-zlib"},
{"available": true, "format": "kdump-lzo"},
{"available": true, "format": "kdump-snappy"}
]
}
Signed-off-by: Qiao Nuohan <qiaonuo...@cn.fujitsu.com>
---
dump.c | 42 ++++++++++++++++++++++++++++++++++++++++++
qapi-schema.json | 13 +++++++++++++
qmp-commands.hx | 31 +++++++++++++++++++++++++++++++
3 files changed, 86 insertions(+), 0 deletions(-)
diff --git a/dump.c b/dump.c
index dbf4bb6..c288cd3 100644
--- a/dump.c
+++ b/dump.c
@@ -1794,3 +1794,45 @@ 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)
+{
+ int i;
+ DumpGuestMemoryCapabilityStatusList *item;
+ DumpGuestMemoryCapability *cap =
+ g_malloc0(sizeof(DumpGuestMemoryCapability));
+
+ cap->format_option = g_strdup_printf("optional");
+
+ for (i = 0; i < DUMP_GUEST_MEMORY_FORMAT_MAX; i++) {
+ if (cap->capabilities == NULL) {
+ item = g_malloc0(sizeof(DumpGuestMemoryCapabilityStatusList));
+ cap->capabilities = item;
+ } else {
+ item->next =
g_malloc0(sizeof(DumpGuestMemoryCapabilityStatusList));
+ item = item->next;
+ }
+
+ item->value = g_malloc0(sizeof(struct
DumpGuestMemoryCapabilityStatus));
+ item->value->format = i;
+
+ if (i == DUMP_GUEST_MEMORY_FORMAT_ELF || i ==
+ DUMP_GUEST_MEMORY_FORMAT_KDUMP_ZLIB) {
+ item->value->available = true;
+ }
+
+#ifdef CONFIG_LZO
+ if (i == DUMP_GUEST_MEMORY_FORMAT_KDUMP_LZO) {
+ item->value->available = true;
+ }
+#endif
+
+#ifdef CONFIG_SNAPPY
+ if (i == DUMP_GUEST_MEMORY_FORMAT_KDUMP_SNAPPY) {
+ item->value->available = true;
+ }
+#endif
+ }
+
+ return cap;
+}
diff --git a/qapi-schema.json b/qapi-schema.json
index 52df894..3085294 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -2744,6 +2744,19 @@
'*length': 'int', '*format': 'DumpGuestMemoryFormat' } }
##
+# Since: 2.0
+##
+{ 'type': 'DumpGuestMemoryCapabilityStatus',
+ 'data': { 'format': 'DumpGuestMemoryFormat', 'available': 'bool' } }
+
+{ 'type': 'DumpGuestMemoryCapability',
+ 'data': {
+ 'format-option': 'str',
+ 'capabilities': ['DumpGuestMemoryCapabilityStatus'] } }
+
+{ '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 9158f22..ad51de0 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -829,6 +829,37 @@ 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 whether option 'format' is available for 'dump-guest-memory' and the
+available format.
+
+Example:
+
+-> { "execute": "query-dump-guest-memory-capability" }
+<- { "return": {
+ "format-option": "optional",
+ "capabilities": [
+ {"available": true, "format": "elf"},
+ {"available": true, "format": "kdump-zlib"},
+ {"available": true, "format": "kdump-lzo"},
+ {"available": true, "format": "kdump-snappy"}
+ ]
+ }
+
+Note: This is a light-weight introspection to let management know whether
format
+ option is available and the supported compression format.
+
+EQMP
+
+ {
.name = "netdev_add",
.args_type = "netdev:O",
.mhandler.cmd_new = qmp_netdev_add,
--
1.7.1
