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/*
* QEMU dump
*
* Copyright Fujitsu, Corp. 2011, 2012
*
* Authors:
* Wen Congyang <wency@cn.fujitsu.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef DUMP_H
#define DUMP_H
#define MAKEDUMPFILE_SIGNATURE "makedumpfile"
#define MAX_SIZE_MDF_HEADER (4096) /* max size of makedumpfile_header */
#define TYPE_FLAT_HEADER (1) /* type of flattened format */
#define VERSION_FLAT_HEADER (1) /* version of flattened format */
#define END_FLAG_FLAT_HEADER (-1)
#define ARCH_PFN_OFFSET (0)
#define paddr_to_pfn(X, page_shift) \
(((unsigned long long)(X) >> (page_shift)) - ARCH_PFN_OFFSET)
#define pfn_to_paddr(X, page_shift) \
(((unsigned long long)(X) + ARCH_PFN_OFFSET) << (page_shift))
/*
* flag for compressed format
*/
#define DUMP_DH_COMPRESSED_ZLIB (0x1)
#define DUMP_DH_COMPRESSED_LZO (0x2)
#define DUMP_DH_COMPRESSED_SNAPPY (0x4)
#define KDUMP_SIGNATURE "KDUMP "
#define SIG_LEN (sizeof(KDUMP_SIGNATURE) - 1)
#define PHYS_BASE (0)
#define DUMP_LEVEL (1)
#define DISKDUMP_HEADER_BLOCKS (1)
#define BUFSIZE_BITMAP (TARGET_PAGE_SIZE)
#define PFN_BUFBITMAP (CHAR_BIT * BUFSIZE_BITMAP)
#define BUFSIZE_DATA_CACHE (TARGET_PAGE_SIZE * 4)
typedef struct ArchDumpInfo {
int d_machine; /* Architecture */
int d_endian; /* ELFDATA2LSB or ELFDATA2MSB */
int d_class; /* ELFCLASS32 or ELFCLASS64 */
} ArchDumpInfo;
typedef struct QEMU_PACKED MakedumpfileHeader {
char signature[16]; /* = "makedumpfile" */
int64_t type;
int64_t version;
} MakedumpfileHeader;
typedef struct QEMU_PACKED MakedumpfileDataHeader {
int64_t offset;
int64_t buf_size;
} MakedumpfileDataHeader;
typedef struct QEMU_PACKED NewUtsname {
char sysname[65];
char nodename[65];
char release[65];
char version[65];
char machine[65];
char domainname[65];
} NewUtsname;
typedef struct QEMU_PACKED DiskDumpHeader32 {
char signature[SIG_LEN]; /* = "KDUMP " */
uint32_t header_version; /* Dump header version */
NewUtsname utsname; /* copy of system_utsname */
char timestamp[10]; /* Time stamp */
uint32_t status; /* Above flags */
uint32_t block_size; /* Size of a block in byte */
uint32_t sub_hdr_size; /* Size of arch dependent header in block */
uint32_t bitmap_blocks; /* Size of Memory bitmap in block */
uint32_t max_mapnr; /* = max_mapnr ,
obsoleted in header_version 6 */
uint32_t total_ram_blocks; /* Number of blocks should be written */
uint32_t device_blocks; /* Number of total blocks in dump device */
uint32_t written_blocks; /* Number of written blocks */
uint32_t current_cpu; /* CPU# which handles dump */
uint32_t nr_cpus; /* Number of CPUs */
} DiskDumpHeader32;
typedef struct QEMU_PACKED DiskDumpHeader64 {
char signature[SIG_LEN]; /* = "KDUMP " */
uint32_t header_version; /* Dump header version */
NewUtsname utsname; /* copy of system_utsname */
char timestamp[22]; /* Time stamp */
uint32_t status; /* Above flags */
uint32_t block_size; /* Size of a block in byte */
uint32_t sub_hdr_size; /* Size of arch dependent header in block */
uint32_t bitmap_blocks; /* Size of Memory bitmap in block */
uint32_t max_mapnr; /* = max_mapnr,
obsoleted in header_version 6 */
uint32_t total_ram_blocks; /* Number of blocks should be written */
uint32_t device_blocks; /* Number of total blocks in dump device */
uint32_t written_blocks; /* Number of written blocks */
uint32_t current_cpu; /* CPU# which handles dump */
uint32_t nr_cpus; /* Number of CPUs */
} DiskDumpHeader64;
typedef struct QEMU_PACKED KdumpSubHeader32 {
uint32_t phys_base;
uint32_t dump_level; /* header_version 1 and later */
uint32_t split; /* header_version 2 and later */
uint32_t start_pfn; /* header_version 2 and later,
obsoleted in header_version 6 */
uint32_t end_pfn; /* header_version 2 and later,
obsoleted in header_version 6 */
uint64_t offset_vmcoreinfo; /* header_version 3 and later */
uint32_t size_vmcoreinfo; /* header_version 3 and later */
uint64_t offset_note; /* header_version 4 and later */
uint32_t note_size; /* header_version 4 and later */
uint64_t offset_eraseinfo; /* header_version 5 and later */
uint32_t size_eraseinfo; /* header_version 5 and later */
uint64_t start_pfn_64; /* header_version 6 and later */
uint64_t end_pfn_64; /* header_version 6 and later */
uint64_t max_mapnr_64; /* header_version 6 and later */
} KdumpSubHeader32;
typedef struct QEMU_PACKED KdumpSubHeader64 {
uint64_t phys_base;
uint32_t dump_level; /* header_version 1 and later */
uint32_t split; /* header_version 2 and later */
uint64_t start_pfn; /* header_version 2 and later,
obsoleted in header_version 6 */
uint64_t end_pfn; /* header_version 2 and later,
obsoleted in header_version 6 */
uint64_t offset_vmcoreinfo; /* header_version 3 and later */
uint64_t size_vmcoreinfo; /* header_version 3 and later */
uint64_t offset_note; /* header_version 4 and later */
uint64_t note_size; /* header_version 4 and later */
uint64_t offset_eraseinfo; /* header_version 5 and later */
uint64_t size_eraseinfo; /* header_version 5 and later */
uint64_t start_pfn_64; /* header_version 6 and later */
uint64_t end_pfn_64; /* header_version 6 and later */
uint64_t max_mapnr_64; /* header_version 6 and later */
} KdumpSubHeader64;
typedef struct DataCache {
int fd; /* fd of the file where to write the cached data */
uint8_t *buf; /* buffer for cached data */
size_t buf_size; /* size of the buf */
size_t data_size; /* size of cached data in buf */
off_t offset; /* offset of the file */
} DataCache;
typedef struct QEMU_PACKED PageDescriptor {
uint64_t offset; /* the offset of the page data*/
uint32_t size; /* the size of this dump page */
uint32_t flags; /* flags */
uint64_t page_flags; /* page flags */
} PageDescriptor;
struct GuestPhysBlockList; /* memory_mapping.h */
int cpu_get_dump_info(ArchDumpInfo *info,
const struct GuestPhysBlockList *guest_phys_blocks);
ssize_t cpu_get_note_size(int class, int machine, int nr_cpus);
#endif
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