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Diffstat (limited to 'include/system/dump.h')
| -rw-r--r-- | include/system/dump.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/include/system/dump.h b/include/system/dump.h new file mode 100644 index 0000000000..607bd7b220 --- /dev/null +++ b/include/system/dump.h @@ -0,0 +1,225 @@ +/* + * 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" +#include "qemu/thread.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 "system/dump-arch.h" +#include "system/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 { + DumpState *state; /* dump state related to this 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; + bool resume; + bool detached; + bool kdump_raw; + 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 */ + + /* Elf dump related data */ + uint32_t phdr_num; + uint32_t shdr_num; + ssize_t note_size; + hwaddr shdr_offset; + hwaddr phdr_offset; + hwaddr section_offset; + hwaddr note_offset; + + void *elf_section_hdrs; /* Pointer to section header buffer */ + void *elf_section_data; /* Pointer to section data buffer */ + uint64_t elf_section_data_size; /* Size of section data */ + GArray *string_table_buf; /* String table data buffer */ + + 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); + +int64_t dump_filtered_memblock_size(GuestPhysBlock *block, int64_t filter_area_start, + int64_t filter_area_length); +int64_t dump_filtered_memblock_start(GuestPhysBlock *block, int64_t filter_area_start, + int64_t filter_area_length); +#endif |