| /* |
| * 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 |
| |
| #include "qapi/qapi-types-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) |
| |
| #ifndef ARCH_PFN_OFFSET |
| #define ARCH_PFN_OFFSET (0) |
| #endif |
| |
| /* |
| * 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 DUMP_LEVEL (1) |
| #define DISKDUMP_HEADER_BLOCKS (1) |
| |
| #include "sysemu/dump-arch.h" |
| #include "sysemu/memory_mapping.h" |
| |
| 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; |
| |
| typedef struct DumpState { |
| GuestPhysBlockList guest_phys_blocks; |
| ArchDumpInfo dump_info; |
| MemoryMappingList list; |
| uint32_t phdr_num; |
| uint32_t shdr_num; |
| bool resume; |
| bool detached; |
| ssize_t note_size; |
| hwaddr shdr_offset; |
| hwaddr phdr_offset; |
| hwaddr section_offset; |
| hwaddr note_offset; |
| hwaddr memory_offset; |
| int fd; |
| |
| /* |
| * Dump filter area variables |
| * |
| * A filtered dump only contains the guest memory designated by |
| * the start address and length variables defined below. |
| * |
| * If length is 0, no filtering is applied. |
| */ |
| int64_t filter_area_begin; /* Start address of partial guest memory area */ |
| int64_t filter_area_length; /* Length of partial guest memory area */ |
| |
| uint8_t *note_buf; /* buffer for notes */ |
| size_t note_buf_offset; /* the writing place in note_buf */ |
| uint32_t nr_cpus; /* number of guest's cpu */ |
| uint64_t max_mapnr; /* the biggest guest's phys-mem's number */ |
| size_t len_dump_bitmap; /* the size of the place used to store |
| dump_bitmap in vmcore */ |
| off_t offset_dump_bitmap; /* offset of dump_bitmap part in vmcore */ |
| off_t offset_page; /* offset of page part in vmcore */ |
| size_t num_dumpable; /* number of page that can be dumped */ |
| uint32_t flag_compress; /* indicate the compression format */ |
| DumpStatus status; /* current dump status */ |
| |
| bool has_format; /* whether format is provided */ |
| DumpGuestMemoryFormat format; /* valid only if has_format == true */ |
| QemuThread dump_thread; /* thread for detached dump */ |
| |
| int64_t total_size; /* total memory size (in bytes) to |
| * be dumped. When filter is |
| * enabled, this will only count |
| * those to be written. */ |
| int64_t written_size; /* written memory size (in bytes), |
| * this could be used to calculate |
| * how much work we have |
| * finished. */ |
| uint8_t *guest_note; /* ELF note content */ |
| size_t guest_note_size; |
| } DumpState; |
| |
| uint16_t cpu_to_dump16(DumpState *s, uint16_t val); |
| uint32_t cpu_to_dump32(DumpState *s, uint32_t val); |
| uint64_t cpu_to_dump64(DumpState *s, uint64_t val); |
| #endif |
