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 | #include "qapi/qapi-types-dump.h" |
18 | |
19 | #define MAKEDUMPFILE_SIGNATURE "makedumpfile" |
20 | #define (4096) /* max size of makedumpfile_header */ |
21 | #define (1) /* type of flattened format */ |
22 | #define (1) /* version of flattened format */ |
23 | #define (-1) |
24 | |
25 | #ifndef ARCH_PFN_OFFSET |
26 | #define ARCH_PFN_OFFSET (0) |
27 | #endif |
28 | |
29 | /* |
30 | * flag for compressed format |
31 | */ |
32 | #define DUMP_DH_COMPRESSED_ZLIB (0x1) |
33 | #define DUMP_DH_COMPRESSED_LZO (0x2) |
34 | #define DUMP_DH_COMPRESSED_SNAPPY (0x4) |
35 | |
36 | #define KDUMP_SIGNATURE "KDUMP " |
37 | #define SIG_LEN (sizeof(KDUMP_SIGNATURE) - 1) |
38 | #define DUMP_LEVEL (1) |
39 | #define (1) |
40 | |
41 | #include "sysemu/dump-arch.h" |
42 | #include "sysemu/memory_mapping.h" |
43 | |
44 | typedef struct QEMU_PACKED { |
45 | char [16]; /* = "makedumpfile" */ |
46 | int64_t ; |
47 | int64_t ; |
48 | } ; |
49 | |
50 | typedef struct QEMU_PACKED { |
51 | int64_t ; |
52 | int64_t ; |
53 | } ; |
54 | |
55 | typedef struct QEMU_PACKED NewUtsname { |
56 | char sysname[65]; |
57 | char nodename[65]; |
58 | char release[65]; |
59 | char version[65]; |
60 | char machine[65]; |
61 | char domainname[65]; |
62 | } NewUtsname; |
63 | |
64 | typedef struct QEMU_PACKED { |
65 | char [SIG_LEN]; /* = "KDUMP " */ |
66 | uint32_t ; /* Dump header version */ |
67 | NewUtsname ; /* copy of system_utsname */ |
68 | char [10]; /* Time stamp */ |
69 | uint32_t ; /* Above flags */ |
70 | uint32_t ; /* Size of a block in byte */ |
71 | uint32_t ; /* Size of arch dependent header in block */ |
72 | uint32_t ; /* Size of Memory bitmap in block */ |
73 | uint32_t ; /* = max_mapnr , |
74 | obsoleted in header_version 6 */ |
75 | uint32_t ; /* Number of blocks should be written */ |
76 | uint32_t ; /* Number of total blocks in dump device */ |
77 | uint32_t ; /* Number of written blocks */ |
78 | uint32_t ; /* CPU# which handles dump */ |
79 | uint32_t ; /* Number of CPUs */ |
80 | } ; |
81 | |
82 | typedef struct QEMU_PACKED { |
83 | char [SIG_LEN]; /* = "KDUMP " */ |
84 | uint32_t ; /* Dump header version */ |
85 | NewUtsname ; /* copy of system_utsname */ |
86 | char [22]; /* Time stamp */ |
87 | uint32_t ; /* Above flags */ |
88 | uint32_t ; /* Size of a block in byte */ |
89 | uint32_t ; /* Size of arch dependent header in block */ |
90 | uint32_t ; /* Size of Memory bitmap in block */ |
91 | uint32_t ; /* = max_mapnr, |
92 | obsoleted in header_version 6 */ |
93 | uint32_t ; /* Number of blocks should be written */ |
94 | uint32_t ; /* Number of total blocks in dump device */ |
95 | uint32_t ; /* Number of written blocks */ |
96 | uint32_t ; /* CPU# which handles dump */ |
97 | uint32_t ; /* Number of CPUs */ |
98 | } ; |
99 | |
100 | typedef struct QEMU_PACKED { |
101 | uint32_t ; |
102 | uint32_t ; /* header_version 1 and later */ |
103 | uint32_t ; /* header_version 2 and later */ |
104 | uint32_t ; /* header_version 2 and later, |
105 | obsoleted in header_version 6 */ |
106 | uint32_t ; /* header_version 2 and later, |
107 | obsoleted in header_version 6 */ |
108 | uint64_t ; /* header_version 3 and later */ |
109 | uint32_t ; /* header_version 3 and later */ |
110 | uint64_t ; /* header_version 4 and later */ |
111 | uint32_t ; /* header_version 4 and later */ |
112 | uint64_t ; /* header_version 5 and later */ |
113 | uint32_t ; /* header_version 5 and later */ |
114 | uint64_t ; /* header_version 6 and later */ |
115 | uint64_t ; /* header_version 6 and later */ |
116 | uint64_t ; /* header_version 6 and later */ |
117 | } ; |
118 | |
119 | typedef struct QEMU_PACKED { |
120 | uint64_t ; |
121 | uint32_t ; /* header_version 1 and later */ |
122 | uint32_t ; /* header_version 2 and later */ |
123 | uint64_t ; /* header_version 2 and later, |
124 | obsoleted in header_version 6 */ |
125 | uint64_t ; /* header_version 2 and later, |
126 | obsoleted in header_version 6 */ |
127 | uint64_t ; /* header_version 3 and later */ |
128 | uint64_t ; /* header_version 3 and later */ |
129 | uint64_t ; /* header_version 4 and later */ |
130 | uint64_t ; /* header_version 4 and later */ |
131 | uint64_t ; /* header_version 5 and later */ |
132 | uint64_t ; /* header_version 5 and later */ |
133 | uint64_t ; /* header_version 6 and later */ |
134 | uint64_t ; /* header_version 6 and later */ |
135 | uint64_t ; /* header_version 6 and later */ |
136 | } ; |
137 | |
138 | typedef struct DataCache { |
139 | int fd; /* fd of the file where to write the cached data */ |
140 | uint8_t *buf; /* buffer for cached data */ |
141 | size_t buf_size; /* size of the buf */ |
142 | size_t data_size; /* size of cached data in buf */ |
143 | off_t offset; /* offset of the file */ |
144 | } DataCache; |
145 | |
146 | typedef struct QEMU_PACKED PageDescriptor { |
147 | uint64_t offset; /* the offset of the page data*/ |
148 | uint32_t size; /* the size of this dump page */ |
149 | uint32_t flags; /* flags */ |
150 | uint64_t page_flags; /* page flags */ |
151 | } PageDescriptor; |
152 | |
153 | typedef struct DumpState { |
154 | GuestPhysBlockList guest_phys_blocks; |
155 | ArchDumpInfo dump_info; |
156 | MemoryMappingList list; |
157 | uint16_t phdr_num; |
158 | uint32_t sh_info; |
159 | bool have_section; |
160 | bool resume; |
161 | bool detached; |
162 | ssize_t note_size; |
163 | hwaddr memory_offset; |
164 | int fd; |
165 | |
166 | GuestPhysBlock *next_block; |
167 | ram_addr_t start; |
168 | bool has_filter; |
169 | int64_t begin; |
170 | int64_t length; |
171 | |
172 | uint8_t *note_buf; /* buffer for notes */ |
173 | size_t note_buf_offset; /* the writing place in note_buf */ |
174 | uint32_t nr_cpus; /* number of guest's cpu */ |
175 | uint64_t max_mapnr; /* the biggest guest's phys-mem's number */ |
176 | size_t len_dump_bitmap; /* the size of the place used to store |
177 | dump_bitmap in vmcore */ |
178 | off_t offset_dump_bitmap; /* offset of dump_bitmap part in vmcore */ |
179 | off_t offset_page; /* offset of page part in vmcore */ |
180 | size_t num_dumpable; /* number of page that can be dumped */ |
181 | uint32_t flag_compress; /* indicate the compression format */ |
182 | DumpStatus status; /* current dump status */ |
183 | |
184 | bool has_format; /* whether format is provided */ |
185 | DumpGuestMemoryFormat format; /* valid only if has_format == true */ |
186 | QemuThread dump_thread; /* thread for detached dump */ |
187 | |
188 | int64_t total_size; /* total memory size (in bytes) to |
189 | * be dumped. When filter is |
190 | * enabled, this will only count |
191 | * those to be written. */ |
192 | int64_t written_size; /* written memory size (in bytes), |
193 | * this could be used to calculate |
194 | * how much work we have |
195 | * finished. */ |
196 | uint8_t *guest_note; /* ELF note content */ |
197 | size_t guest_note_size; |
198 | } DumpState; |
199 | |
200 | uint16_t cpu_to_dump16(DumpState *s, uint16_t val); |
201 | uint32_t cpu_to_dump32(DumpState *s, uint32_t val); |
202 | uint64_t cpu_to_dump64(DumpState *s, uint64_t val); |
203 | #endif |
204 | |