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