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authorqiaonuohan <qiaonuohan@cn.fujitsu.com>2014-02-18 14:11:38 +0800
committerLuiz Capitulino <lcapitulino@redhat.com>2014-02-28 11:52:03 -0500
commit7d6dc7f30c4781857ce230333da6ddd21fe0dcde (patch)
treec5c0a7f3c5be8d32b898e31921b8394126d95b1d
parent4ab23a918249772458fd330758dc0fad96edce50 (diff)
downloadqemu-arm-7d6dc7f30c4781857ce230333da6ddd21fe0dcde.tar.gz
dump: add 'query-dump-guest-memory-capability' command
'query-dump-guest-memory-capability' is used to query the available formats for '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 <qiaonuohan@cn.fujitsu.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
-rw-r--r--dump.c33
-rw-r--r--qapi-schema.json24
-rw-r--r--qmp-commands.hx20
3 files changed, 77 insertions, 0 deletions
diff --git a/dump.c b/dump.c
index 2c81318b80..14b3d1d6ae 100644
--- a/dump.c
+++ b/dump.c
@@ -1791,3 +1791,36 @@ 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 0d04ace4aa..1a5f93e100 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -2862,6 +2862,30 @@
'*length': 'int', '*format': 'DumpGuestMemoryFormat' } }
##
+# @DumpGuestMemoryCapability:
+#
+# A list of the available formats for dump-guest-memory
+#
+# Since: 2.0
+##
+{ 'type': 'DumpGuestMemoryCapability',
+ 'data': {
+ 'formats': ['DumpGuestMemoryFormat'] } }
+
+##
+# @query-dump-guest-memory-capability:
+#
+# Returns the available formats for dump-guest-memory
+#
+# Returns: A @DumpGuestMemoryCapability object listing available formats for
+# dump-guest-memory
+#
+# Since: 2.0
+##
+{ '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 8da11acd8d..d982cd62b9 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -829,6 +829,26 @@ 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 formats for 'dump-guest-memory'
+
+Example:
+
+-> { "execute": "query-dump-guest-memory-capability" }
+<- { "return": { "formats":
+ ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
+
+EQMP
+
+ {
.name = "netdev_add",
.args_type = "netdev:O",
.mhandler.cmd_new = qmp_netdev_add,