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authorqiaonuohan <qiaonuohan@cn.fujitsu.com>2014-02-18 14:11:32 +0800
committerLuiz Capitulino <lcapitulino@redhat.com>2014-02-28 11:52:03 -0500
commit298f116827405f37dde10a2a6cbc75d20f9ba99c (patch)
tree669c8e6b3477593ae2232ed9f01745cb7ea1175c /include/sysemu/dump.h
parent7aad248d3596a1fb94778f2cd215f86a802b3abb (diff)
dump: add API to write dump header
the functions are used to write header of kdump-compressed format to vmcore. Header of kdump-compressed format includes: 1. common header: DiskDumpHeader32 / DiskDumpHeader64 2. sub header: KdumpSubHeader32 / KdumpSubHeader64 3. extra information: only elf notes here Signed-off-by: Qiao Nuohan <qiaonuohan@cn.fujitsu.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Diffstat (limited to 'include/sysemu/dump.h')
-rw-r--r--include/sysemu/dump.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/include/sysemu/dump.h b/include/sysemu/dump.h
index 995bf47003..dfee23873f 100644
--- a/include/sysemu/dump.h
+++ b/include/sysemu/dump.h
@@ -27,6 +27,19 @@
#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)
+
typedef struct ArchDumpInfo {
int d_machine; /* Architecture */
int d_endian; /* ELFDATA2LSB or ELFDATA2MSB */
@@ -44,6 +57,89 @@ typedef struct QEMU_PACKED MakedumpfileDataHeader {
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;
+
struct GuestPhysBlockList; /* memory_mapping.h */
int cpu_get_dump_info(ArchDumpInfo *info,
const struct GuestPhysBlockList *guest_phys_blocks);