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From 1b2628fe2375d602a6f123a0aa4a5cd190e72d3e Mon Sep 17 00:00:00 2001
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From: Laszlo Ersek <lersek@redhat.com>
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Date: Fri, 7 Nov 2014 17:18:05 +0100
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Subject: [PATCH 18/41] dump: add 'query-dump-guest-memory-capability' command
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Message-id: <1415380693-16593-19-git-send-email-lersek@redhat.com>
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Patchwork-id: 62204
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O-Subject: [RHEL-7.1 qemu-kvm PATCH 18/26] dump: add 'query-dump-guest-memory-capability' command
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Bugzilla: 1157798
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
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RH-Acked-by: dgibson <dgibson@redhat.com>
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From: qiaonuohan <qiaonuohan@cn.fujitsu.com>
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'query-dump-guest-memory-capability' is used to query the available formats for
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'dump-guest-memory'. The output of the command will be like:
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-> { "execute": "query-dump-guest-memory-capability" }
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<- { "return": { "formats":
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["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
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Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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(cherry picked from commit 7d6dc7f30c4781857ce230333da6ddd21fe0dcde)
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Signed-off-by: Laszlo Ersek <lersek@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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dump.c | 33 +++++++++++++++++++++++++++++++++
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qapi-schema.json | 24 ++++++++++++++++++++++++
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qmp-commands.hx | 20 ++++++++++++++++++++
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3 files changed, 77 insertions(+)
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diff --git a/dump.c b/dump.c
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index 507a250..25bf8e6 100644
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--- a/dump.c
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+++ b/dump.c
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@@ -1797,3 +1797,36 @@ void qmp_dump_guest_memory(bool paging, const char *file, bool has_begin,
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g_free(s);
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}
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+
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+DumpGuestMemoryCapability *qmp_query_dump_guest_memory_capability(Error **errp)
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+{
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+ DumpGuestMemoryFormatList *item;
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+ DumpGuestMemoryCapability *cap =
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+ g_malloc0(sizeof(DumpGuestMemoryCapability));
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+
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+ /* elf is always available */
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+ item = g_malloc0(sizeof(DumpGuestMemoryFormatList));
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+ cap->formats = item;
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+ item->value = DUMP_GUEST_MEMORY_FORMAT_ELF;
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+
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+ /* kdump-zlib is always available */
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+ item->next = g_malloc0(sizeof(DumpGuestMemoryFormatList));
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+ item = item->next;
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+ item->value = DUMP_GUEST_MEMORY_FORMAT_KDUMP_ZLIB;
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+
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+ /* add new item if kdump-lzo is available */
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+#ifdef CONFIG_LZO
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+ item->next = g_malloc0(sizeof(DumpGuestMemoryFormatList));
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+ item = item->next;
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+ item->value = DUMP_GUEST_MEMORY_FORMAT_KDUMP_LZO;
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+#endif
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+
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+ /* add new item if kdump-snappy is available */
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+#ifdef CONFIG_SNAPPY
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+ item->next = g_malloc0(sizeof(DumpGuestMemoryFormatList));
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+ item = item->next;
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+ item->value = DUMP_GUEST_MEMORY_FORMAT_KDUMP_SNAPPY;
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+#endif
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+
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+ return cap;
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+}
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diff --git a/qapi-schema.json b/qapi-schema.json
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index 8f81c76..31ac5c5 100644
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--- a/qapi-schema.json
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+++ b/qapi-schema.json
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@@ -2645,6 +2645,30 @@
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'*length': 'int', '*format': 'DumpGuestMemoryFormat' } }
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##
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+# @DumpGuestMemoryCapability:
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+#
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+# A list of the available formats for dump-guest-memory
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+#
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+# Since: 2.0
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+##
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+{ 'type': 'DumpGuestMemoryCapability',
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+ 'data': {
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+ 'formats': ['DumpGuestMemoryFormat'] } }
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+
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+##
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+# @query-dump-guest-memory-capability:
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+#
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+# Returns the available formats for dump-guest-memory
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+#
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+# Returns: A @DumpGuestMemoryCapability object listing available formats for
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+# dump-guest-memory
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+#
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+# Since: 2.0
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+##
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+{ 'command': 'query-dump-guest-memory-capability',
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+ 'returns': 'DumpGuestMemoryCapability' }
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+
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+##
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# @netdev_add:
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#
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# Add a network backend.
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diff --git a/qmp-commands.hx b/qmp-commands.hx
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index 61aa3bf..9c11213 100644
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--- a/qmp-commands.hx
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+++ b/qmp-commands.hx
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@@ -923,6 +923,26 @@ Notes:
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EQMP
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{
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+ .name = "query-dump-guest-memory-capability",
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+ .args_type = "",
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+ .mhandler.cmd_new = qmp_marshal_input_query_dump_guest_memory_capability,
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+ },
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+
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+SQMP
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+query-dump-guest-memory-capability
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+----------
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+
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+Show available formats for 'dump-guest-memory'
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+
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+Example:
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+
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+-> { "execute": "query-dump-guest-memory-capability" }
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+<- { "return": { "formats":
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+ ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
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+
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+EQMP
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+
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+ {
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.name = "netdev_add",
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.args_type = "netdev:O",
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.mhandler.cmd_new = qmp_netdev_add,
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--
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1.8.3.1
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