Commit 7d6dc7f3 authored by qiaonuohan's avatar qiaonuohan Committed by Luiz Capitulino
Browse files

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: default avatarQiao Nuohan <qiaonuohan@cn.fujitsu.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarLuiz Capitulino <lcapitulino@redhat.com>
parent 4ab23a91

dump.c

+33 −0
Original line number Diff line number Diff line
@@ -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;

}

qapi-schema.json

+24 −0
Original line number Diff line number Diff line
@@ -2861,6 +2861,30 @@ 
  'data': { 'paging': 'bool', 'protocol': 'str', '*begin': 'int',

            '*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:

#

qmp-commands.hx

+20 −0
Original line number Diff line number Diff line
@@ -826,6 +826,26 @@ Notes: 


(1) All boolean arguments default to false



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



    {