mirror of
https://gitlab.com/qemu-project/qemu
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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>
This commit is contained in:
Markus Armbruster
parent
b0227cdb00
commit
d06b747bd5
8 changed files with 207 additions and 196 deletions
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@ -1855,6 +1855,7 @@ F: hw/misc/vmcoreinfo.c
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F: include/hw/misc/vmcoreinfo.h
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F: include/sysemu/dump-arch.h
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F: include/sysemu/dump.h
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F: qapi/dump.json
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F: scripts/dump-guest-memory.py
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F: stubs/dump.c
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4
dump.c
4
dump.c
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@ -24,8 +24,8 @@
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#include "sysemu/memory_mapping.h"
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#include "sysemu/cpus.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-misc.h"
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#include "qapi/qapi-events-misc.h"
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#include "qapi/qapi-commands-dump.h"
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#include "qapi/qapi-events-dump.h"
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#include "qapi/qmp/qerror.h"
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#include "qemu/error-report.h"
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#include "hw/misc/vmcoreinfo.h"
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@ -14,7 +14,7 @@
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#ifndef DUMP_H
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#define DUMP_H
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#include "qapi/qapi-types-misc.h"
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#include "qapi/qapi-types-dump.h"
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#define MAKEDUMPFILE_SIGNATURE "makedumpfile"
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#define MAX_SIZE_MDF_HEADER (4096) /* max size of makedumpfile_header */
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@ -31,6 +31,7 @@
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#include "qapi/qapi-builtin-visit.h"
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#include "qapi/qapi-commands-block.h"
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#include "qapi/qapi-commands-char.h"
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#include "qapi/qapi-commands-dump.h"
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#include "qapi/qapi-commands-migration.h"
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#include "qapi/qapi-commands-misc.h"
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#include "qapi/qapi-commands-net.h"
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@ -6,7 +6,7 @@ util-obj-y += qmp-event.o
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util-obj-y += qapi-util.o
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QAPI_COMMON_MODULES = audio authz block-core block char common crypto
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QAPI_COMMON_MODULES += introspect job machine migration misc net
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QAPI_COMMON_MODULES += dump introspect job machine migration misc net
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QAPI_COMMON_MODULES += qdev qom rdma rocker run-state sockets tpm
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QAPI_COMMON_MODULES += trace transaction ui
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QAPI_TARGET_MODULES = machine-target misc-target
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200
qapi/dump.json
Normal file
200
qapi/dump.json
Normal file
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@ -0,0 +1,200 @@
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# -*- Mode: Python -*-
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#
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# This work is licensed under the terms of the GNU GPL, version 2 or later.
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# See the COPYING file in the top-level directory.
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##
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# = Dump guest memory
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##
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##
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# @DumpGuestMemoryFormat:
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#
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# An enumeration of guest-memory-dump's format.
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#
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# @elf: elf format
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#
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# @kdump-zlib: kdump-compressed format with zlib-compressed
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#
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# @kdump-lzo: kdump-compressed format with lzo-compressed
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#
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# @kdump-snappy: kdump-compressed format with snappy-compressed
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#
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# @win-dmp: Windows full crashdump format,
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# can be used instead of ELF converting (since 2.13)
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#
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# Since: 2.0
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##
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{ 'enum': 'DumpGuestMemoryFormat',
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'data': [ 'elf', 'kdump-zlib', 'kdump-lzo', 'kdump-snappy', 'win-dmp' ] }
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##
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# @dump-guest-memory:
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#
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# Dump guest's memory to vmcore. It is a synchronous operation that can take
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# very long depending on the amount of guest memory.
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#
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# @paging: if true, do paging to get guest's memory mapping. This allows
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# using gdb to process the core file.
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#
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# IMPORTANT: this option can make QEMU allocate several gigabytes
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# of RAM. This can happen for a large guest, or a
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# malicious guest pretending to be large.
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#
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# Also, paging=true has the following limitations:
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#
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# 1. The guest may be in a catastrophic state or can have corrupted
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# memory, which cannot be trusted
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# 2. The guest can be in real-mode even if paging is enabled. For
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# example, the guest uses ACPI to sleep, and ACPI sleep state
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# goes in real-mode
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# 3. Currently only supported on i386 and x86_64.
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#
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# @protocol: the filename or file descriptor of the vmcore. The supported
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# protocols are:
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#
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# 1. file: the protocol starts with "file:", and the following
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# string is the file's path.
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# 2. fd: the protocol starts with "fd:", and the following string
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# is the fd's name.
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#
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# @detach: if true, QMP will return immediately rather than
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# waiting for the dump to finish. The user can track progress
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# using "query-dump". (since 2.6).
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#
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# @begin: if specified, the starting physical address.
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#
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# @length: if specified, the memory size, in bytes. If you don't
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# want to dump all guest's memory, please specify the start @begin
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# and @length
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#
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# @format: if specified, the format of guest memory dump. But non-elf
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# format is conflict with paging and filter, ie. @paging, @begin and
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# @length is not allowed to be specified with non-elf @format at the
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# same time (since 2.0)
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#
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# Note: All boolean arguments default to false
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#
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# Returns: nothing on success
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#
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# Since: 1.2
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#
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# Example:
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#
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# -> { "execute": "dump-guest-memory",
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# "arguments": { "protocol": "fd:dump" } }
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# <- { "return": {} }
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#
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##
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{ 'command': 'dump-guest-memory',
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'data': { 'paging': 'bool', 'protocol': 'str', '*detach': 'bool',
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'*begin': 'int', '*length': 'int',
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'*format': 'DumpGuestMemoryFormat'} }
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##
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# @DumpStatus:
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#
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# Describe the status of a long-running background guest memory dump.
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#
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# @none: no dump-guest-memory has started yet.
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#
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# @active: there is one dump running in background.
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#
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# @completed: the last dump has finished successfully.
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#
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# @failed: the last dump has failed.
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#
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# Since: 2.6
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##
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{ 'enum': 'DumpStatus',
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'data': [ 'none', 'active', 'completed', 'failed' ] }
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##
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# @DumpQueryResult:
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#
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# The result format for 'query-dump'.
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#
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# @status: enum of @DumpStatus, which shows current dump status
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#
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# @completed: bytes written in latest dump (uncompressed)
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#
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# @total: total bytes to be written in latest dump (uncompressed)
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#
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# Since: 2.6
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##
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{ 'struct': 'DumpQueryResult',
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'data': { 'status': 'DumpStatus',
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'completed': 'int',
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'total': 'int' } }
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##
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# @query-dump:
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#
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# Query latest dump status.
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#
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# Returns: A @DumpStatus object showing the dump status.
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#
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# Since: 2.6
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#
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# Example:
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#
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# -> { "execute": "query-dump" }
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# <- { "return": { "status": "active", "completed": 1024000,
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# "total": 2048000 } }
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#
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##
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{ 'command': 'query-dump', 'returns': 'DumpQueryResult' }
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##
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# @DUMP_COMPLETED:
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#
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# Emitted when background dump has completed
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#
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# @result: final dump status
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#
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# @error: human-readable error string that provides
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# hint on why dump failed. Only presents on failure. The
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# user should not try to interpret the error string.
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#
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# Since: 2.6
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#
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# Example:
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#
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# { "event": "DUMP_COMPLETED",
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# "data": {"result": {"total": 1090650112, "status": "completed",
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# "completed": 1090650112} } }
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#
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##
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{ 'event': 'DUMP_COMPLETED' ,
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'data': { 'result': 'DumpQueryResult', '*error': 'str' } }
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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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{ 'struct': 'DumpGuestMemoryCapability',
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'data': {
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'formats': ['DumpGuestMemoryFormat'] } }
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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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# 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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##
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{ 'command': 'query-dump-guest-memory-capability',
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'returns': 'DumpGuestMemoryCapability' }
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192
qapi/misc.json
192
qapi/misc.json
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@ -1117,198 +1117,6 @@
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##
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{ 'command': 'xen-set-global-dirty-log', 'data': { 'enable': 'bool' } }
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##
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# @DumpGuestMemoryFormat:
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#
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# An enumeration of guest-memory-dump's format.
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#
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# @elf: elf format
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#
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# @kdump-zlib: kdump-compressed format with zlib-compressed
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#
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# @kdump-lzo: kdump-compressed format with lzo-compressed
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#
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# @kdump-snappy: kdump-compressed format with snappy-compressed
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#
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# @win-dmp: Windows full crashdump format,
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# can be used instead of ELF converting (since 2.13)
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#
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# Since: 2.0
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##
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{ 'enum': 'DumpGuestMemoryFormat',
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'data': [ 'elf', 'kdump-zlib', 'kdump-lzo', 'kdump-snappy', 'win-dmp' ] }
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##
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# @dump-guest-memory:
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#
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# Dump guest's memory to vmcore. It is a synchronous operation that can take
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# very long depending on the amount of guest memory.
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#
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# @paging: if true, do paging to get guest's memory mapping. This allows
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# using gdb to process the core file.
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#
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# IMPORTANT: this option can make QEMU allocate several gigabytes
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# of RAM. This can happen for a large guest, or a
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# malicious guest pretending to be large.
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#
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# Also, paging=true has the following limitations:
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#
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# 1. The guest may be in a catastrophic state or can have corrupted
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# memory, which cannot be trusted
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# 2. The guest can be in real-mode even if paging is enabled. For
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# example, the guest uses ACPI to sleep, and ACPI sleep state
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# goes in real-mode
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# 3. Currently only supported on i386 and x86_64.
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#
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# @protocol: the filename or file descriptor of the vmcore. The supported
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# protocols are:
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#
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# 1. file: the protocol starts with "file:", and the following
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# string is the file's path.
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# 2. fd: the protocol starts with "fd:", and the following string
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# is the fd's name.
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#
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# @detach: if true, QMP will return immediately rather than
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# waiting for the dump to finish. The user can track progress
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# using "query-dump". (since 2.6).
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#
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# @begin: if specified, the starting physical address.
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#
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# @length: if specified, the memory size, in bytes. If you don't
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# want to dump all guest's memory, please specify the start @begin
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# and @length
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#
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# @format: if specified, the format of guest memory dump. But non-elf
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# format is conflict with paging and filter, ie. @paging, @begin and
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# @length is not allowed to be specified with non-elf @format at the
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# same time (since 2.0)
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#
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# Note: All boolean arguments default to false
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#
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# Returns: nothing on success
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#
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# Since: 1.2
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#
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# Example:
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#
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# -> { "execute": "dump-guest-memory",
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# "arguments": { "protocol": "fd:dump" } }
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# <- { "return": {} }
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#
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##
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{ 'command': 'dump-guest-memory',
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'data': { 'paging': 'bool', 'protocol': 'str', '*detach': 'bool',
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'*begin': 'int', '*length': 'int',
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'*format': 'DumpGuestMemoryFormat'} }
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##
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# @DumpStatus:
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#
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# Describe the status of a long-running background guest memory dump.
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#
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# @none: no dump-guest-memory has started yet.
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#
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# @active: there is one dump running in background.
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#
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# @completed: the last dump has finished successfully.
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#
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# @failed: the last dump has failed.
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#
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# Since: 2.6
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##
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{ 'enum': 'DumpStatus',
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'data': [ 'none', 'active', 'completed', 'failed' ] }
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##
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# @DumpQueryResult:
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#
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# The result format for 'query-dump'.
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#
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# @status: enum of @DumpStatus, which shows current dump status
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#
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# @completed: bytes written in latest dump (uncompressed)
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#
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# @total: total bytes to be written in latest dump (uncompressed)
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#
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# Since: 2.6
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##
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{ 'struct': 'DumpQueryResult',
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'data': { 'status': 'DumpStatus',
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'completed': 'int',
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'total': 'int' } }
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##
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# @query-dump:
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#
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# Query latest dump status.
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#
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# Returns: A @DumpStatus object showing the dump status.
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#
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# Since: 2.6
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#
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# Example:
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#
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# -> { "execute": "query-dump" }
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# <- { "return": { "status": "active", "completed": 1024000,
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# "total": 2048000 } }
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#
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##
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{ 'command': 'query-dump', 'returns': 'DumpQueryResult' }
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##
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# @DUMP_COMPLETED:
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#
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# Emitted when background dump has completed
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#
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# @result: final dump status
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#
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# @error: human-readable error string that provides
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# hint on why dump failed. Only presents on failure. The
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# user should not try to interpret the error string.
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#
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# Since: 2.6
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#
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# Example:
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#
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# { "event": "DUMP_COMPLETED",
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# "data": {"result": {"total": 1090650112, "status": "completed",
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# "completed": 1090650112} } }
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#
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##
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{ 'event': 'DUMP_COMPLETED' ,
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'data': { 'result': 'DumpQueryResult', '*error': 'str' } }
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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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{ 'struct': 'DumpGuestMemoryCapability',
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'data': {
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'formats': ['DumpGuestMemoryFormat'] } }
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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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# 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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##
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{ 'command': 'query-dump-guest-memory-capability',
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'returns': 'DumpGuestMemoryCapability' }
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##
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# @getfd:
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#
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@ -86,6 +86,7 @@
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{ 'include': 'crypto.json' }
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{ 'include': 'block.json' }
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{ 'include': 'char.json' }
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{ 'include': 'dump.json' }
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{ 'include': 'job.json' }
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{ 'include': 'net.json' }
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{ 'include': 'rdma.json' }
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