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1 | /* | |
2 | * QEMU dump | |
3 | * | |
4 | * Copyright Fujitsu, Corp. 2011, 2012 | |
5 | * | |
6 | * Authors: | |
7 | * Wen Congyang <wency@cn.fujitsu.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | * | |
12 | */ | |
13 | ||
14 | #ifndef DUMP_H | |
15 | #define DUMP_H | |
16 | ||
17 | #define MAKEDUMPFILE_SIGNATURE "makedumpfile" | |
18 | #define MAX_SIZE_MDF_HEADER (4096) /* max size of makedumpfile_header */ | |
19 | #define TYPE_FLAT_HEADER (1) /* type of flattened format */ | |
20 | #define VERSION_FLAT_HEADER (1) /* version of flattened format */ | |
21 | #define END_FLAG_FLAT_HEADER (-1) | |
22 | ||
23 | #define ARCH_PFN_OFFSET (0) | |
24 | ||
25 | #define paddr_to_pfn(X, page_shift) \ | |
26 | (((unsigned long long)(X) >> (page_shift)) - ARCH_PFN_OFFSET) | |
27 | #define pfn_to_paddr(X, page_shift) \ | |
28 | (((unsigned long long)(X) + ARCH_PFN_OFFSET) << (page_shift)) | |
29 | ||
30 | /* | |
31 | * flag for compressed format | |
32 | */ | |
33 | #define DUMP_DH_COMPRESSED_ZLIB (0x1) | |
34 | #define DUMP_DH_COMPRESSED_LZO (0x2) | |
35 | #define DUMP_DH_COMPRESSED_SNAPPY (0x4) | |
36 | ||
37 | #define KDUMP_SIGNATURE "KDUMP " | |
38 | #define SIG_LEN (sizeof(KDUMP_SIGNATURE) - 1) | |
39 | #define PHYS_BASE (0) | |
40 | #define DUMP_LEVEL (1) | |
41 | #define DISKDUMP_HEADER_BLOCKS (1) | |
42 | #define BUFSIZE_BITMAP (TARGET_PAGE_SIZE) | |
43 | #define PFN_BUFBITMAP (CHAR_BIT * BUFSIZE_BITMAP) | |
44 | #define BUFSIZE_DATA_CACHE (TARGET_PAGE_SIZE * 4) | |
45 | ||
46 | typedef struct ArchDumpInfo { | |
47 | int d_machine; /* Architecture */ | |
48 | int d_endian; /* ELFDATA2LSB or ELFDATA2MSB */ | |
49 | int d_class; /* ELFCLASS32 or ELFCLASS64 */ | |
50 | } ArchDumpInfo; | |
51 | ||
52 | typedef struct QEMU_PACKED MakedumpfileHeader { | |
53 | char signature[16]; /* = "makedumpfile" */ | |
54 | int64_t type; | |
55 | int64_t version; | |
56 | } MakedumpfileHeader; | |
57 | ||
58 | typedef struct QEMU_PACKED MakedumpfileDataHeader { | |
59 | int64_t offset; | |
60 | int64_t buf_size; | |
61 | } MakedumpfileDataHeader; | |
62 | ||
63 | typedef struct QEMU_PACKED NewUtsname { | |
64 | char sysname[65]; | |
65 | char nodename[65]; | |
66 | char release[65]; | |
67 | char version[65]; | |
68 | char machine[65]; | |
69 | char domainname[65]; | |
70 | } NewUtsname; | |
71 | ||
72 | typedef struct QEMU_PACKED DiskDumpHeader32 { | |
73 | char signature[SIG_LEN]; /* = "KDUMP " */ | |
74 | uint32_t header_version; /* Dump header version */ | |
75 | NewUtsname utsname; /* copy of system_utsname */ | |
76 | char timestamp[10]; /* Time stamp */ | |
77 | uint32_t status; /* Above flags */ | |
78 | uint32_t block_size; /* Size of a block in byte */ | |
79 | uint32_t sub_hdr_size; /* Size of arch dependent header in block */ | |
80 | uint32_t bitmap_blocks; /* Size of Memory bitmap in block */ | |
81 | uint32_t max_mapnr; /* = max_mapnr , | |
82 | obsoleted in header_version 6 */ | |
83 | uint32_t total_ram_blocks; /* Number of blocks should be written */ | |
84 | uint32_t device_blocks; /* Number of total blocks in dump device */ | |
85 | uint32_t written_blocks; /* Number of written blocks */ | |
86 | uint32_t current_cpu; /* CPU# which handles dump */ | |
87 | uint32_t nr_cpus; /* Number of CPUs */ | |
88 | } DiskDumpHeader32; | |
89 | ||
90 | typedef struct QEMU_PACKED DiskDumpHeader64 { | |
91 | char signature[SIG_LEN]; /* = "KDUMP " */ | |
92 | uint32_t header_version; /* Dump header version */ | |
93 | NewUtsname utsname; /* copy of system_utsname */ | |
94 | char timestamp[22]; /* Time stamp */ | |
95 | uint32_t status; /* Above flags */ | |
96 | uint32_t block_size; /* Size of a block in byte */ | |
97 | uint32_t sub_hdr_size; /* Size of arch dependent header in block */ | |
98 | uint32_t bitmap_blocks; /* Size of Memory bitmap in block */ | |
99 | uint32_t max_mapnr; /* = max_mapnr, | |
100 | obsoleted in header_version 6 */ | |
101 | uint32_t total_ram_blocks; /* Number of blocks should be written */ | |
102 | uint32_t device_blocks; /* Number of total blocks in dump device */ | |
103 | uint32_t written_blocks; /* Number of written blocks */ | |
104 | uint32_t current_cpu; /* CPU# which handles dump */ | |
105 | uint32_t nr_cpus; /* Number of CPUs */ | |
106 | } DiskDumpHeader64; | |
107 | ||
108 | typedef struct QEMU_PACKED KdumpSubHeader32 { | |
109 | uint32_t phys_base; | |
110 | uint32_t dump_level; /* header_version 1 and later */ | |
111 | uint32_t split; /* header_version 2 and later */ | |
112 | uint32_t start_pfn; /* header_version 2 and later, | |
113 | obsoleted in header_version 6 */ | |
114 | uint32_t end_pfn; /* header_version 2 and later, | |
115 | obsoleted in header_version 6 */ | |
116 | uint64_t offset_vmcoreinfo; /* header_version 3 and later */ | |
117 | uint32_t size_vmcoreinfo; /* header_version 3 and later */ | |
118 | uint64_t offset_note; /* header_version 4 and later */ | |
119 | uint32_t note_size; /* header_version 4 and later */ | |
120 | uint64_t offset_eraseinfo; /* header_version 5 and later */ | |
121 | uint32_t size_eraseinfo; /* header_version 5 and later */ | |
122 | uint64_t start_pfn_64; /* header_version 6 and later */ | |
123 | uint64_t end_pfn_64; /* header_version 6 and later */ | |
124 | uint64_t max_mapnr_64; /* header_version 6 and later */ | |
125 | } KdumpSubHeader32; | |
126 | ||
127 | typedef struct QEMU_PACKED KdumpSubHeader64 { | |
128 | uint64_t phys_base; | |
129 | uint32_t dump_level; /* header_version 1 and later */ | |
130 | uint32_t split; /* header_version 2 and later */ | |
131 | uint64_t start_pfn; /* header_version 2 and later, | |
132 | obsoleted in header_version 6 */ | |
133 | uint64_t end_pfn; /* header_version 2 and later, | |
134 | obsoleted in header_version 6 */ | |
135 | uint64_t offset_vmcoreinfo; /* header_version 3 and later */ | |
136 | uint64_t size_vmcoreinfo; /* header_version 3 and later */ | |
137 | uint64_t offset_note; /* header_version 4 and later */ | |
138 | uint64_t note_size; /* header_version 4 and later */ | |
139 | uint64_t offset_eraseinfo; /* header_version 5 and later */ | |
140 | uint64_t size_eraseinfo; /* header_version 5 and later */ | |
141 | uint64_t start_pfn_64; /* header_version 6 and later */ | |
142 | uint64_t end_pfn_64; /* header_version 6 and later */ | |
143 | uint64_t max_mapnr_64; /* header_version 6 and later */ | |
144 | } KdumpSubHeader64; | |
145 | ||
146 | typedef struct DataCache { | |
147 | int fd; /* fd of the file where to write the cached data */ | |
148 | uint8_t *buf; /* buffer for cached data */ | |
149 | size_t buf_size; /* size of the buf */ | |
150 | size_t data_size; /* size of cached data in buf */ | |
151 | off_t offset; /* offset of the file */ | |
152 | } DataCache; | |
153 | ||
154 | typedef struct QEMU_PACKED PageDescriptor { | |
155 | uint64_t offset; /* the offset of the page data*/ | |
156 | uint32_t size; /* the size of this dump page */ | |
157 | uint32_t flags; /* flags */ | |
158 | uint64_t page_flags; /* page flags */ | |
159 | } PageDescriptor; | |
160 | ||
161 | struct GuestPhysBlockList; /* memory_mapping.h */ | |
162 | int cpu_get_dump_info(ArchDumpInfo *info, | |
163 | const struct GuestPhysBlockList *guest_phys_blocks); | |
164 | ssize_t cpu_get_note_size(int class, int machine, int nr_cpus); | |
165 | ||
166 | #endif |