qapi: Split dump.json off misc.json

Move commands dump-guest-memory, query-dump,
query-dump-guest-memory-capability with their types from misc.json to
new dump.json.  Add dump.json to MAINTAINERS section "Dump".

Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190619201050.19040-15-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

MAINTAINERS

@@ -1855,6 +1855,7 @@ F: hw/misc/vmcoreinfo.c
 F: include/hw/misc/vmcoreinfo.h
 F: include/sysemu/dump-arch.h
 F: include/sysemu/dump.h
+F: qapi/dump.json
 F: scripts/dump-guest-memory.py
 F: stubs/dump.c
 

dump.c

@@ -24,8 +24,8 @@
 #include "sysemu/memory_mapping.h"
 #include "sysemu/cpus.h"
 #include "qapi/error.h"
-#include "qapi/qapi-commands-misc.h"
-#include "qapi/qapi-events-misc.h"
+#include "qapi/qapi-commands-dump.h"
+#include "qapi/qapi-events-dump.h"
 #include "qapi/qmp/qerror.h"
 #include "qemu/error-report.h"
 #include "hw/misc/vmcoreinfo.h"

include/sysemu/dump.h

@@ -14,7 +14,7 @@
 #ifndef DUMP_H
 #define DUMP_H
 
-#include "qapi/qapi-types-misc.h"
+#include "qapi/qapi-types-dump.h"
 
 #define MAKEDUMPFILE_SIGNATURE      "makedumpfile"
 #define MAX_SIZE_MDF_HEADER         (4096) /* max size of makedumpfile_header */

monitor/hmp-cmds.c

@@ -31,6 +31,7 @@
 #include "qapi/qapi-builtin-visit.h"
 #include "qapi/qapi-commands-block.h"
 #include "qapi/qapi-commands-char.h"
+#include "qapi/qapi-commands-dump.h"
 #include "qapi/qapi-commands-migration.h"
 #include "qapi/qapi-commands-misc.h"
 #include "qapi/qapi-commands-net.h"

qapi/Makefile.objs

@@ -6,7 +6,7 @@ util-obj-y += qmp-event.o
 util-obj-y += qapi-util.o
 
 QAPI_COMMON_MODULES = audio authz block-core block char common crypto
-QAPI_COMMON_MODULES += introspect job machine migration misc net
+QAPI_COMMON_MODULES += dump introspect job machine migration misc net
 QAPI_COMMON_MODULES += qdev qom rdma rocker run-state sockets tpm
 QAPI_COMMON_MODULES += trace transaction ui
 QAPI_TARGET_MODULES = machine-target misc-target

qapi/dump.json

@@ -0,0 +1,200 @@
+# -*- Mode: Python -*-
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or later.
+# See the COPYING file in the top-level directory.
+
+##
+# = Dump guest memory
+##
+
+##
+# @DumpGuestMemoryFormat:
+#
+# An enumeration of guest-memory-dump's format.
+#
+# @elf: elf format
+#
+# @kdump-zlib: kdump-compressed format with zlib-compressed
+#
+# @kdump-lzo: kdump-compressed format with lzo-compressed
+#
+# @kdump-snappy: kdump-compressed format with snappy-compressed
+#
+# @win-dmp: Windows full crashdump format,
+#           can be used instead of ELF converting (since 2.13)
+#
+# Since: 2.0
+##
+{ 'enum': 'DumpGuestMemoryFormat',
+  'data': [ 'elf', 'kdump-zlib', 'kdump-lzo', 'kdump-snappy', 'win-dmp' ] }
+
+##
+# @dump-guest-memory:
+#
+# Dump guest's memory to vmcore. It is a synchronous operation that can take
+# very long depending on the amount of guest memory.
+#
+# @paging: if true, do paging to get guest's memory mapping. This allows
+#          using gdb to process the core file.
+#
+#          IMPORTANT: this option can make QEMU allocate several gigabytes
+#                     of RAM. This can happen for a large guest, or a
+#                     malicious guest pretending to be large.
+#
+#          Also, paging=true has the following limitations:
+#
+#             1. The guest may be in a catastrophic state or can have corrupted
+#                memory, which cannot be trusted
+#             2. The guest can be in real-mode even if paging is enabled. For
+#                example, the guest uses ACPI to sleep, and ACPI sleep state
+#                goes in real-mode
+#             3. Currently only supported on i386 and x86_64.
+#
+# @protocol: the filename or file descriptor of the vmcore. The supported
+#            protocols are:
+#
+#            1. file: the protocol starts with "file:", and the following
+#               string is the file's path.
+#            2. fd: the protocol starts with "fd:", and the following string
+#               is the fd's name.
+#
+# @detach: if true, QMP will return immediately rather than
+#          waiting for the dump to finish. The user can track progress
+#          using "query-dump". (since 2.6).
+#
+# @begin: if specified, the starting physical address.
+#
+# @length: if specified, the memory size, in bytes. If you don't
+#          want to dump all guest's memory, please specify the start @begin
+#          and @length
+#
+# @format: if specified, the format of guest memory dump. But non-elf
+#          format is conflict with paging and filter, ie. @paging, @begin and
+#          @length is not allowed to be specified with non-elf @format at the
+#          same time (since 2.0)
+#
+# Note: All boolean arguments default to false
+#
+# Returns: nothing on success
+#
+# Since: 1.2
+#
+# Example:
+#
+# -> { "execute": "dump-guest-memory",
+#      "arguments": { "protocol": "fd:dump" } }
+# <- { "return": {} }
+#
+##
+{ 'command': 'dump-guest-memory',
+  'data': { 'paging': 'bool', 'protocol': 'str', '*detach': 'bool',
+            '*begin': 'int', '*length': 'int',
+            '*format': 'DumpGuestMemoryFormat'} }
+
+##
+# @DumpStatus:
+#
+# Describe the status of a long-running background guest memory dump.
+#
+# @none: no dump-guest-memory has started yet.
+#
+# @active: there is one dump running in background.
+#
+# @completed: the last dump has finished successfully.
+#
+# @failed: the last dump has failed.
+#
+# Since: 2.6
+##
+{ 'enum': 'DumpStatus',
+  'data': [ 'none', 'active', 'completed', 'failed' ] }
+
+##
+# @DumpQueryResult:
+#
+# The result format for 'query-dump'.
+#
+# @status: enum of @DumpStatus, which shows current dump status
+#
+# @completed: bytes written in latest dump (uncompressed)
+#
+# @total: total bytes to be written in latest dump (uncompressed)
+#
+# Since: 2.6
+##
+{ 'struct': 'DumpQueryResult',
+  'data': { 'status': 'DumpStatus',
+            'completed': 'int',
+            'total': 'int' } }
+
+##
+# @query-dump:
+#
+# Query latest dump status.
+#
+# Returns: A @DumpStatus object showing the dump status.
+#
+# Since: 2.6
+#
+# Example:
+#
+# -> { "execute": "query-dump" }
+# <- { "return": { "status": "active", "completed": 1024000,
+#                  "total": 2048000 } }
+#
+##
+{ 'command': 'query-dump', 'returns': 'DumpQueryResult' }
+
+##
+# @DUMP_COMPLETED:
+#
+# Emitted when background dump has completed
+#
+# @result: final dump status
+#
+# @error: human-readable error string that provides
+#         hint on why dump failed. Only presents on failure. The
+#         user should not try to interpret the error string.
+#
+# Since: 2.6
+#
+# Example:
+#
+# { "event": "DUMP_COMPLETED",
+#   "data": {"result": {"total": 1090650112, "status": "completed",
+#                       "completed": 1090650112} } }
+#
+##
+{ 'event': 'DUMP_COMPLETED' ,
+  'data': { 'result': 'DumpQueryResult', '*error': 'str' } }
+
+##
+# @DumpGuestMemoryCapability:
+#
+# A list of the available formats for dump-guest-memory
+#
+# Since: 2.0
+##
+{ 'struct': '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
+#
+# Example:
+#
+# -> { "execute": "query-dump-guest-memory-capability" }
+# <- { "return": { "formats":
+#                  ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
+#
+##
+{ 'command': 'query-dump-guest-memory-capability',
+  'returns': 'DumpGuestMemoryCapability' }

qapi/misc.json

@@ -1117,198 +1117,6 @@
 ##
 { 'command': 'xen-set-global-dirty-log', 'data': { 'enable': 'bool' } }
 
-##
-# @DumpGuestMemoryFormat:
-#
-# An enumeration of guest-memory-dump's format.
-#
-# @elf: elf format
-#
-# @kdump-zlib: kdump-compressed format with zlib-compressed
-#
-# @kdump-lzo: kdump-compressed format with lzo-compressed
-#
-# @kdump-snappy: kdump-compressed format with snappy-compressed
-#
-# @win-dmp: Windows full crashdump format,
-#           can be used instead of ELF converting (since 2.13)
-#
-# Since: 2.0
-##
-{ 'enum': 'DumpGuestMemoryFormat',
-  'data': [ 'elf', 'kdump-zlib', 'kdump-lzo', 'kdump-snappy', 'win-dmp' ] }
-
-##
-# @dump-guest-memory:
-#
-# Dump guest's memory to vmcore. It is a synchronous operation that can take
-# very long depending on the amount of guest memory.
-#
-# @paging: if true, do paging to get guest's memory mapping. This allows
-#          using gdb to process the core file.
-#
-#          IMPORTANT: this option can make QEMU allocate several gigabytes
-#                     of RAM. This can happen for a large guest, or a
-#                     malicious guest pretending to be large.
-#
-#          Also, paging=true has the following limitations:
-#
-#             1. The guest may be in a catastrophic state or can have corrupted
-#                memory, which cannot be trusted
-#             2. The guest can be in real-mode even if paging is enabled. For
-#                example, the guest uses ACPI to sleep, and ACPI sleep state
-#                goes in real-mode
-#             3. Currently only supported on i386 and x86_64.
-#
-# @protocol: the filename or file descriptor of the vmcore. The supported
-#            protocols are:
-#
-#            1. file: the protocol starts with "file:", and the following
-#               string is the file's path.
-#            2. fd: the protocol starts with "fd:", and the following string
-#               is the fd's name.
-#
-# @detach: if true, QMP will return immediately rather than
-#          waiting for the dump to finish. The user can track progress
-#          using "query-dump". (since 2.6).
-#
-# @begin: if specified, the starting physical address.
-#
-# @length: if specified, the memory size, in bytes. If you don't
-#          want to dump all guest's memory, please specify the start @begin
-#          and @length
-#
-# @format: if specified, the format of guest memory dump. But non-elf
-#          format is conflict with paging and filter, ie. @paging, @begin and
-#          @length is not allowed to be specified with non-elf @format at the
-#          same time (since 2.0)
-#
-# Note: All boolean arguments default to false
-#
-# Returns: nothing on success
-#
-# Since: 1.2
-#
-# Example:
-#
-# -> { "execute": "dump-guest-memory",
-#      "arguments": { "protocol": "fd:dump" } }
-# <- { "return": {} }
-#
-##
-{ 'command': 'dump-guest-memory',
-  'data': { 'paging': 'bool', 'protocol': 'str', '*detach': 'bool',
-            '*begin': 'int', '*length': 'int',
-            '*format': 'DumpGuestMemoryFormat'} }
-
-##
-# @DumpStatus:
-#
-# Describe the status of a long-running background guest memory dump.
-#
-# @none: no dump-guest-memory has started yet.
-#
-# @active: there is one dump running in background.
-#
-# @completed: the last dump has finished successfully.
-#
-# @failed: the last dump has failed.
-#
-# Since: 2.6
-##
-{ 'enum': 'DumpStatus',
-  'data': [ 'none', 'active', 'completed', 'failed' ] }
-
-##
-# @DumpQueryResult:
-#
-# The result format for 'query-dump'.
-#
-# @status: enum of @DumpStatus, which shows current dump status
-#
-# @completed: bytes written in latest dump (uncompressed)
-#
-# @total: total bytes to be written in latest dump (uncompressed)
-#
-# Since: 2.6
-##
-{ 'struct': 'DumpQueryResult',
-  'data': { 'status': 'DumpStatus',
-            'completed': 'int',
-            'total': 'int' } }
-
-##
-# @query-dump:
-#
-# Query latest dump status.
-#
-# Returns: A @DumpStatus object showing the dump status.
-#
-# Since: 2.6
-#
-# Example:
-#
-# -> { "execute": "query-dump" }
-# <- { "return": { "status": "active", "completed": 1024000,
-#                  "total": 2048000 } }
-#
-##
-{ 'command': 'query-dump', 'returns': 'DumpQueryResult' }
-
-##
-# @DUMP_COMPLETED:
-#
-# Emitted when background dump has completed
-#
-# @result: final dump status
-#
-# @error: human-readable error string that provides
-#         hint on why dump failed. Only presents on failure. The
-#         user should not try to interpret the error string.
-#
-# Since: 2.6
-#
-# Example:
-#
-# { "event": "DUMP_COMPLETED",
-#   "data": {"result": {"total": 1090650112, "status": "completed",
-#                       "completed": 1090650112} } }
-#
-##
-{ 'event': 'DUMP_COMPLETED' ,
-  'data': { 'result': 'DumpQueryResult', '*error': 'str' } }
-
-##
-# @DumpGuestMemoryCapability:
-#
-# A list of the available formats for dump-guest-memory
-#
-# Since: 2.0
-##
-{ 'struct': '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
-#
-# Example:
-#
-# -> { "execute": "query-dump-guest-memory-capability" }
-# <- { "return": { "formats":
-#                  ["elf", "kdump-zlib", "kdump-lzo", "kdump-snappy"] }
-#
-##
-{ 'command': 'query-dump-guest-memory-capability',
-  'returns': 'DumpGuestMemoryCapability' }
-
 ##
 # @getfd:
 #

qapi/qapi-schema.json

@@ -86,6 +86,7 @@
 { 'include': 'crypto.json' }
 { 'include': 'block.json' }
 { 'include': 'char.json' }
+{ 'include': 'dump.json' }
 { 'include': 'job.json' }
 { 'include': 'net.json' }
 { 'include': 'rdma.json' }