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[Qemu-devel] [RFC][PATCH 08/14 v4] introduce a new monitor command 'dump
From: |
Wen Congyang |
Subject: |
[Qemu-devel] [RFC][PATCH 08/14 v4] introduce a new monitor command 'dump' to dump guest's memory |
Date: |
Wed, 04 Jan 2012 14:11:01 +0800 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 |
Signed-off-by: Wen Congyang <address@hidden>
---
Makefile.target | 8 +-
dump.c | 588 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
dump.h | 4 +
hmp-commands.hx | 16 ++
monitor.c | 3 +
qmp-commands.hx | 26 +++
6 files changed, 641 insertions(+), 4 deletions(-)
create mode 100644 dump.c
diff --git a/Makefile.target b/Makefile.target
index 29562ad..f7cc2b9 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -110,7 +110,7 @@ $(call set-vpath,
$(SRC_PATH)/linux-user:$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR
QEMU_CFLAGS+=-I$(SRC_PATH)/linux-user/$(TARGET_ABI_DIR)
-I$(SRC_PATH)/linux-user
obj-y = main.o syscall.o strace.o mmap.o signal.o thunk.o \
elfload.o linuxload.o uaccess.o gdbstub.o cpu-uname.o \
- user-exec.o $(oslib-obj-y)
+ user-exec.o $(oslib-obj-y) dump.o
obj-$(TARGET_HAS_BFLT) += flatload.o
@@ -148,7 +148,7 @@ LDFLAGS+=-Wl,-segaddr,__STD_PROG_ZONE,0x1000 -image_base
0x0e000000
LIBS+=-lmx
obj-y = main.o commpage.o machload.o mmap.o signal.o syscall.o thunk.o \
- gdbstub.o user-exec.o
+ gdbstub.o user-exec.o dump.o
obj-i386-y += ioport-user.o
@@ -170,7 +170,7 @@ $(call set-vpath, $(SRC_PATH)/bsd-user)
QEMU_CFLAGS+=-I$(SRC_PATH)/bsd-user -I$(SRC_PATH)/bsd-user/$(TARGET_ARCH)
obj-y = main.o bsdload.o elfload.o mmap.o signal.o strace.o syscall.o \
- gdbstub.o uaccess.o user-exec.o
+ gdbstub.o uaccess.o user-exec.o dump.o
obj-i386-y += ioport-user.o
@@ -186,7 +186,7 @@ endif #CONFIG_BSD_USER
# System emulator target
ifdef CONFIG_SOFTMMU
-obj-y = arch_init.o cpus.o monitor.o machine.o gdbstub.o balloon.o ioport.o
+obj-y = arch_init.o cpus.o monitor.o machine.o gdbstub.o balloon.o ioport.o
dump.o
# virtio has to be here due to weird dependency between PCI and virtio-net.
# need to fix this properly
obj-$(CONFIG_NO_PCI) += pci-stub.o
diff --git a/dump.c b/dump.c
new file mode 100644
index 0000000..ab29a4c
--- /dev/null
+++ b/dump.c
@@ -0,0 +1,588 @@
+/*
+ * QEMU dump
+ *
+ * Copyright Fujitsu, Corp. 2011
+ *
+ * Authors:
+ * Wen Congyang <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu-common.h"
+#include <unistd.h>
+#include <elf.h>
+#include <sys/procfs.h>
+#include "cpu.h"
+#include "cpu-all.h"
+#include "targphys.h"
+#include "monitor.h"
+#include "kvm.h"
+#include "dump.h"
+#include "sysemu.h"
+#include "bswap.h"
+#include "memory_mapping.h"
+
+#define CPU_CONVERT_TO_TARGET16(val) \
+({ \
+ uint16_t _val = (val); \
+ if (endian == ELFDATA2LSB) { \
+ _val = cpu_to_le16(_val); \
+ } else {\
+ _val = cpu_to_be16(_val); \
+ } \
+ _val; \
+})
+
+#define CPU_CONVERT_TO_TARGET32(val) \
+({ \
+ uint32_t _val = (val); \
+ if (endian == ELFDATA2LSB) { \
+ _val = cpu_to_le32(_val); \
+ } else {\
+ _val = cpu_to_be32(_val); \
+ } \
+ _val; \
+})
+
+#define CPU_CONVERT_TO_TARGET64(val) \
+({ \
+ uint64_t _val = (val); \
+ if (endian == ELFDATA2LSB) { \
+ _val = cpu_to_le64(_val); \
+ } else {\
+ _val = cpu_to_be64(_val); \
+ } \
+ _val; \
+})
+
+enum {
+ DUMP_STATE_ERROR,
+ DUMP_STATE_SETUP,
+ DUMP_STATE_CANCELLED,
+ DUMP_STATE_ACTIVE,
+ DUMP_STATE_COMPLETED,
+};
+
+typedef struct DumpState {
+ ArchDumpInfo dump_info;
+ MemoryMappingList list;
+ int phdr_num;
+ int state;
+ char *error;
+ Monitor *mon;
+ int fd;
+ target_phys_addr_t memory_offset;
+} DumpState;
+
+static DumpState *dump_get_current(void)
+{
+ static DumpState current_dump = {
+ .state = DUMP_STATE_SETUP,
+ };
+
+ return ¤t_dump;
+}
+
+static int dump_cleanup(DumpState *s)
+{
+ int ret = 0;
+
+ free_memory_mapping_list(&s->list);
+ if (s->fd != -1) {
+ close(s->fd);
+ s->fd = -1;
+ }
+
+ return ret;
+}
+
+static void dump_error(DumpState *s, const char *reason)
+{
+ s->state = DUMP_STATE_ERROR;
+ s->error = g_strdup(reason);
+ dump_cleanup(s);
+}
+
+static inline int cpuid(CPUState *env)
+{
+#if defined(CONFIG_USER_ONLY) && defined(CONFIG_USE_NPTL)
+ return env->host_tid;
+#else
+ return env->cpu_index + 1;
+#endif
+}
+
+static int write_elf64_header(DumpState *s)
+{
+ Elf64_Ehdr elf_header;
+ int ret;
+ int endian = s->dump_info.d_endian;
+
+ memset(&elf_header, 0, sizeof(Elf64_Ehdr));
+ memcpy(&elf_header, ELFMAG, 4);
+ elf_header.e_ident[EI_CLASS] = ELFCLASS64;
+ elf_header.e_ident[EI_DATA] = s->dump_info.d_endian;
+ elf_header.e_ident[EI_VERSION] = EV_CURRENT;
+ elf_header.e_type = CPU_CONVERT_TO_TARGET16(ET_CORE);
+ elf_header.e_machine = CPU_CONVERT_TO_TARGET16(s->dump_info.d_machine);
+ elf_header.e_version = CPU_CONVERT_TO_TARGET32(EV_CURRENT);
+ elf_header.e_ehsize = CPU_CONVERT_TO_TARGET16(sizeof(elf_header));
+ elf_header.e_phoff = CPU_CONVERT_TO_TARGET64(sizeof(Elf64_Ehdr));
+ elf_header.e_phentsize = CPU_CONVERT_TO_TARGET16(sizeof(Elf64_Phdr));
+ elf_header.e_phnum = CPU_CONVERT_TO_TARGET16(s->phdr_num);
+
+ lseek(s->fd, 0, SEEK_SET);
+ ret = write(s->fd, &elf_header, sizeof(elf_header));
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write elf header.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int write_elf32_header(DumpState *s)
+{
+ Elf32_Ehdr elf_header;
+ int ret;
+ int endian = s->dump_info.d_endian;
+
+ memset(&elf_header, 0, sizeof(Elf32_Ehdr));
+ memcpy(&elf_header, ELFMAG, 4);
+ elf_header.e_ident[EI_CLASS] = ELFCLASS32;
+ elf_header.e_ident[EI_DATA] = endian;
+ elf_header.e_ident[EI_VERSION] = EV_CURRENT;
+ elf_header.e_type = CPU_CONVERT_TO_TARGET16(ET_CORE);
+ elf_header.e_machine = CPU_CONVERT_TO_TARGET16(s->dump_info.d_machine);
+ elf_header.e_version = CPU_CONVERT_TO_TARGET32(EV_CURRENT);
+ elf_header.e_ehsize = CPU_CONVERT_TO_TARGET16(sizeof(elf_header));
+ elf_header.e_phoff = CPU_CONVERT_TO_TARGET32(sizeof(Elf32_Ehdr));
+ elf_header.e_phentsize = CPU_CONVERT_TO_TARGET16(sizeof(Elf32_Phdr));
+ elf_header.e_phnum = CPU_CONVERT_TO_TARGET16(s->phdr_num);
+
+ lseek(s->fd, 0, SEEK_SET);
+ ret = write(s->fd, &elf_header, sizeof(elf_header));
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write elf header.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int write_elf64_load(DumpState *s, MemoryMapping *memory_mapping,
+ int phdr_index, target_phys_addr_t offset)
+{
+ Elf64_Phdr phdr;
+ off_t phdr_offset;
+ int ret;
+ int endian = s->dump_info.d_endian;
+
+ memset(&phdr, 0, sizeof(Elf64_Phdr));
+ phdr.p_type = CPU_CONVERT_TO_TARGET32(PT_LOAD);
+ phdr.p_offset = CPU_CONVERT_TO_TARGET64(offset);
+ phdr.p_paddr = CPU_CONVERT_TO_TARGET64(memory_mapping->phys_addr);
+ if (offset == -1) {
+ phdr.p_filesz = 0;
+ } else {
+ phdr.p_filesz = CPU_CONVERT_TO_TARGET64(memory_mapping->length);
+ }
+ phdr.p_memsz = CPU_CONVERT_TO_TARGET64(memory_mapping->length);
+ phdr.p_vaddr = CPU_CONVERT_TO_TARGET64(memory_mapping->virt_addr);
+
+ phdr_offset = sizeof(Elf64_Ehdr) + sizeof(Elf64_Phdr)*phdr_index;
+ lseek(s->fd, phdr_offset, SEEK_SET);
+ ret = write(s->fd, &phdr, sizeof(Elf64_Phdr));
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write program header table.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int write_elf32_load(DumpState *s, MemoryMapping *memory_mapping,
+ int phdr_index, target_phys_addr_t offset)
+{
+ Elf32_Phdr phdr;
+ off_t phdr_offset;
+ int ret;
+ int endian = s->dump_info.d_endian;
+
+ memset(&phdr, 0, sizeof(Elf32_Phdr));
+ phdr.p_type = CPU_CONVERT_TO_TARGET32(PT_LOAD);
+ phdr.p_offset = CPU_CONVERT_TO_TARGET32(offset);
+ phdr.p_paddr = CPU_CONVERT_TO_TARGET32(memory_mapping->phys_addr);
+ if (offset == -1) {
+ phdr.p_filesz = 0;
+ } else {
+ phdr.p_filesz = CPU_CONVERT_TO_TARGET32(memory_mapping->length);
+ }
+ phdr.p_memsz = CPU_CONVERT_TO_TARGET32(memory_mapping->length);
+ phdr.p_vaddr = CPU_CONVERT_TO_TARGET32(memory_mapping->virt_addr);
+
+ phdr_offset = sizeof(Elf32_Ehdr) + sizeof(Elf32_Phdr)*phdr_index;
+ lseek(s->fd, phdr_offset, SEEK_SET);
+ ret = write(s->fd, &phdr, sizeof(Elf32_Phdr));
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write program header table.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int write_elf64_notes(DumpState *s, int phdr_index,
+ target_phys_addr_t *offset)
+{
+ CPUState *env;
+ int ret;
+ target_phys_addr_t begin = *offset;
+ Elf64_Phdr phdr;
+ off_t phdr_offset;
+ int id;
+ int endian = s->dump_info.d_endian;
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ id = cpuid(env);
+ ret = cpu_write_elf64_note(s->fd, env, id, offset);
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write elf notes.\n");
+ return -1;
+ }
+ }
+
+ memset(&phdr, 0, sizeof(Elf64_Phdr));
+ phdr.p_type = CPU_CONVERT_TO_TARGET32(PT_NOTE);
+ phdr.p_offset = CPU_CONVERT_TO_TARGET64(begin);
+ phdr.p_paddr = 0;
+ phdr.p_filesz = CPU_CONVERT_TO_TARGET64(*offset - begin);
+ phdr.p_memsz = CPU_CONVERT_TO_TARGET64(*offset - begin);
+ phdr.p_vaddr = 0;
+
+ phdr_offset = sizeof(Elf64_Ehdr);
+ lseek(s->fd, phdr_offset, SEEK_SET);
+ ret = write(s->fd, &phdr, sizeof(Elf64_Phdr));
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write program header table.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int write_elf32_notes(DumpState *s, int phdr_index,
+ target_phys_addr_t *offset)
+{
+ CPUState *env;
+ int ret;
+ target_phys_addr_t begin = *offset;
+ Elf32_Phdr phdr;
+ off_t phdr_offset;
+ int id;
+ int endian = s->dump_info.d_endian;
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ id = cpuid(env);
+ ret = cpu_write_elf32_note(s->fd, env, id, offset);
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write elf notes.\n");
+ return -1;
+ }
+ }
+
+ memset(&phdr, 0, sizeof(Elf32_Phdr));
+ phdr.p_type = CPU_CONVERT_TO_TARGET32(PT_NOTE);
+ phdr.p_offset = CPU_CONVERT_TO_TARGET32(begin);
+ phdr.p_paddr = 0;
+ phdr.p_filesz = CPU_CONVERT_TO_TARGET32(*offset - begin);
+ phdr.p_memsz = CPU_CONVERT_TO_TARGET32(*offset - begin);
+ phdr.p_vaddr = 0;
+
+ phdr_offset = sizeof(Elf32_Ehdr);
+ lseek(s->fd, phdr_offset, SEEK_SET);
+ ret = write(s->fd, &phdr, sizeof(Elf32_Phdr));
+ if (ret < 0) {
+ dump_error(s, "dump: failed to write program header table.\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int write_data(DumpState *s, void *buf, int length,
+ target_phys_addr_t *offset)
+{
+ int ret;
+
+ lseek(s->fd, *offset, SEEK_SET);
+ ret = write(s->fd, buf, length);
+ if (ret < 0) {
+ dump_error(s, "dump: failed to save memory.\n");
+ return -1;
+ }
+
+ *offset += length;
+ return 0;
+}
+
+/* write the memroy to vmcore. 1 page per I/O. */
+static int write_memory(DumpState *s, RAMBlock *block,
+ target_phys_addr_t *offset)
+{
+ int i, ret;
+
+ for (i = 0; i < block->length / TARGET_PAGE_SIZE; i++) {
+ ret = write_data(s, block->host + i * TARGET_PAGE_SIZE,
+ TARGET_PAGE_SIZE, offset);
+ if (ret < 0) {
+ return -1;
+ }
+ }
+
+ if ((block->length % TARGET_PAGE_SIZE) != 0) {
+ ret = write_data(s, block->host + i * TARGET_PAGE_SIZE,
+ block->length % TARGET_PAGE_SIZE, offset);
+ if (ret < 0) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/* get the memory's offset in the vmcore */
+static target_phys_addr_t get_offset(target_phys_addr_t phys_addr,
+ target_phys_addr_t memory_offset)
+{
+ RAMBlock *block;
+ target_phys_addr_t offset = memory_offset;
+
+ QLIST_FOREACH(block, &ram_list.blocks, next) {
+ if (phys_addr >= block->offset &&
+ phys_addr < block->offset + block->length) {
+ return phys_addr - block->offset + offset;
+ }
+ offset += block->length;
+ }
+
+ return -1;
+}
+
+static DumpState *dump_init(Monitor *mon, int fd)
+{
+ CPUState *env;
+ DumpState *s = dump_get_current();
+ int ret;
+
+ vm_stop(RUN_STATE_PAUSED);
+ s->state = DUMP_STATE_SETUP;
+ s->error = NULL;
+ s->mon = mon;
+ s->fd = fd;
+
+ /*
+ * get dump info: endian, class and architecture.
+ * If the target architecture is not supported, cpu_get_dump_info() will
+ * return -1.
+ *
+ * if we use kvm, we should synchronize the register before we get dump
+ * info.
+ */
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ cpu_synchronize_state(env);
+ }
+ ret = cpu_get_dump_info(&s->dump_info);
+ if (ret < 0) {
+ monitor_printf(mon, "dump: unsupported target.\n");
+ return NULL;
+ }
+
+ /* get memory mapping */
+ s->list.num = 0;
+ QTAILQ_INIT(&s->list.head);
+ get_memory_mapping(&s->list);
+
+ /* crash needs extra memory mapping to determine phys_base. */
+ ret = cpu_add_extra_memory_mapping(&s->list);
+ if (ret < 0) {
+ monitor_printf(mon, "dump: failed to add extra memory mapping.\n");
+ return NULL;
+ }
+
+ /*
+ * calculate phdr_num
+ *
+ * the type of phdr->num is uint16_t, so we should avoid overflow
+ */
+ s->phdr_num = 1; /* PT_NOTE */
+ if (s->list.num > (1 << 16) - 2) {
+ s->phdr_num = (1 << 16) - 1;
+ } else {
+ s->phdr_num += s->list.num;
+ }
+
+ return s;
+}
+
+/* write elf header, PT_NOTE and elf note to vmcore. */
+static int dump_begin(DumpState *s)
+{
+ target_phys_addr_t offset;
+ int ret;
+
+ s->state = DUMP_STATE_ACTIVE;
+
+ /*
+ * the vmcore's format is:
+ * --------------
+ * | elf header |
+ * --------------
+ * | PT_NOTE |
+ * --------------
+ * | PT_LOAD |
+ * --------------
+ * | ...... |
+ * --------------
+ * | PT_LOAD |
+ * --------------
+ * | elf note |
+ * --------------
+ * | memory |
+ * --------------
+ *
+ * we only know where the memory is saved after we write elf note into
+ * vmcore.
+ */
+
+ /* write elf header to vmcore */
+ if (s->dump_info.d_class == ELFCLASS64) {
+ ret = write_elf64_header(s);
+ } else {
+ ret = write_elf32_header(s);
+ }
+ if (ret < 0) {
+ return -1;
+ }
+
+ /* write elf notes to vmcore */
+ if (s->dump_info.d_class == ELFCLASS64) {
+ offset = sizeof(Elf64_Ehdr) + sizeof(Elf64_Phdr)*s->phdr_num;
+ ret = write_elf64_notes(s, 0, &offset);
+ } else {
+ offset = sizeof(Elf32_Ehdr) + sizeof(Elf32_Phdr)*s->phdr_num;
+ ret = write_elf32_notes(s, 0, &offset);
+ }
+
+ if (ret < 0) {
+ return -1;
+ }
+
+ s->memory_offset = offset;
+ return 0;
+}
+
+/* write PT_LOAD to vmcore */
+static int dump_completed(DumpState *s)
+{
+ target_phys_addr_t offset;
+ MemoryMapping *memory_mapping;
+ int phdr_index = 1, ret;
+
+ QTAILQ_FOREACH(memory_mapping, &s->list.head, next) {
+ offset = get_offset(memory_mapping->phys_addr, s->memory_offset);
+ if (s->dump_info.d_class == ELFCLASS64) {
+ ret = write_elf64_load(s, memory_mapping, phdr_index++, offset);
+ } else {
+ ret = write_elf32_load(s, memory_mapping, phdr_index++, offset);
+ }
+ if (ret < 0) {
+ return -1;
+ }
+ }
+
+ s->state = DUMP_STATE_COMPLETED;
+ dump_cleanup(s);
+ return 0;
+}
+
+/* write all memory to vmcore */
+static int dump_iterate(DumpState *s)
+{
+ RAMBlock *block;
+ target_phys_addr_t offset = s->memory_offset;
+ int ret;
+
+ /* write all memory to vmcore */
+ QLIST_FOREACH(block, &ram_list.blocks, next) {
+ ret = write_memory(s, block, &offset);
+ if (ret < 0) {
+ return -1;
+ }
+ }
+
+ return dump_completed(s);
+}
+
+static int create_vmcore(DumpState *s)
+{
+ int ret;
+
+ ret = dump_begin(s);
+ if (ret < 0) {
+ return -1;
+ }
+
+ ret = dump_iterate(s);
+ if (ret < 0) {
+ return -1;
+ }
+
+ return 0;
+}
+
+int do_dump(Monitor *mon, const QDict *qdict, QObject **ret_data)
+{
+ const char *file = qdict_get_str(qdict, "file");
+ const char *p;
+ int fd = -1;
+ DumpState *s;
+
+#if !defined(WIN32)
+ if (strstart(file, "fd:", &p)) {
+ fd = monitor_get_fd(mon, p);
+ if (fd == -1) {
+ monitor_printf(mon, "dump: invalid file descriptor"
+ " identifier\n");
+ return -1;
+ }
+ }
+#endif
+
+ if (strstart(file, "file:", &p)) {
+ fd = open(p, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY);
+ if (fd < 0) {
+ monitor_printf(mon, "dump: failed to open %s\n", p);
+ return -1;
+ }
+ }
+
+ if (fd == -1) {
+ monitor_printf(mon, "unknown dump protocol: %s\n", file);
+ return -1;
+ }
+
+ s = dump_init(mon, fd);
+ if (!s) {
+ return -1;
+ }
+
+ if (create_vmcore(s) < 0) {
+ return -1;
+ }
+
+ return 0;
+}
diff --git a/dump.h b/dump.h
index a36468b..def6c0e 100644
--- a/dump.h
+++ b/dump.h
@@ -1,10 +1,14 @@
#ifndef DUMP_H
#define DUMP_H
+#include "qdict.h"
+
typedef struct ArchDumpInfo {
int d_machine; /* Architecture */
int d_endian; /* ELFDATA2LSB or ELFDATA2MSB */
int d_class; /* ELFCLASS32 or ELFCLASS64 */
} ArchDumpInfo;
+int do_dump(Monitor *mon, const QDict *qdict, QObject **ret_data);
+
#endif
diff --git a/hmp-commands.hx b/hmp-commands.hx
index 14838b7..98c1c35 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -828,6 +828,22 @@ new parameters (if specified) once the vm migration
finished successfully.
ETEXI
{
+ .name = "dump",
+ .args_type = "file:s",
+ .params = "file",
+ .help = "dump to file",
+ .user_print = monitor_user_noop,
+ .mhandler.cmd_new = do_dump,
+ },
+
+
+STEXI
address@hidden dump @var{file}
address@hidden dump
+Dump to @var{file}.
+ETEXI
+
+ {
.name = "snapshot_blkdev",
.args_type = "device:B,snapshot-file:s?,format:s?",
.params = "device [new-image-file] [format]",
diff --git a/monitor.c b/monitor.c
index 7334401..edd6aa7 100644
--- a/monitor.c
+++ b/monitor.c
@@ -73,6 +73,9 @@
#endif
#include "hw/lm32_pic.h"
+/* for dump */
+#include "dump.h"
+
//#define DEBUG
//#define DEBUG_COMPLETION
diff --git a/qmp-commands.hx b/qmp-commands.hx
index 7e3f4b9..023cade 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -572,6 +572,32 @@ Example:
EQMP
{
+ .name = "dump",
+ .args_type = "file:s",
+ .params = "file",
+ .help = "dump to file",
+ .user_print = monitor_user_noop,
+ .mhandler.cmd_new = do_dump,
+ },
+
+SQMP
+dump
+
+
+Dump to file.
+
+Arguments:
+
+- "file": Destination file (json-string)
+
+Example:
+
+-> { "execute": "dump", "arguments": { "file": "fd:dump" } }
+<- { "return": {} }
+
+EQMP
+
+ {
.name = "netdev_add",
.args_type = "netdev:O",
.params = "[user|tap|socket],id=str[,prop=value][,...]",
--
1.7.1
- [Qemu-devel] [RFC][PATCT 0/14 v4] dump memory when host pci device is used by guest, Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 01/14 v4] Add API to create memory mapping list, Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 02/14 v4] Add API to check whether a physical address is I/O address, Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 03/14 v4] target-i386: implement cpu_get_memory_mapping(), Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 04/14 v4] Add API to get memory mapping, Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 05/14 v4] target-i386: Add API to write elf notes to core file, Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 06/14 v4] target-i386: Add API to add extra memory mapping, Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 07/14 v4] target-i386: add API to get dump info, Wen Congyang, 2012/01/04
- [Qemu-devel] [RFC][PATCH 08/14 v4] introduce a new monitor command 'dump' to dump guest's memory,
Wen Congyang <=
[Qemu-devel] [RFC][PATCH 09/14 v4] run dump at the background, Wen Congyang, 2012/01/04
[Qemu-devel] [RFC][PATCH 10/14 v4] support detached dump, Wen Congyang, 2012/01/04
[Qemu-devel] [RFC][PATCH 11/14 v4] support to cancel the current dumping, Wen Congyang, 2012/01/04
[Qemu-devel] [RFC][PATCH 12/14 v4] support to set dumping speed, Wen Congyang, 2012/01/04
[Qemu-devel] [RFC][PATCH 13/14 v4] support to query dumping status, Wen Congyang, 2012/01/04
[Qemu-devel] [RFC][PATCH 14/14 v4] auto cancel dumping after vm state is changed to run, Wen Congyang, 2012/01/04