-
Notifications
You must be signed in to change notification settings - Fork 279
/
lkcd_dump_v7.h
416 lines (323 loc) · 13.8 KB
/
lkcd_dump_v7.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
/* lkcd_dump_v5.h - core analysis suite
*
* Copyright (C) 2001, 2002 Mission Critical Linux, Inc.
* Copyright (C) 2002, 2003, 2004, 2005, 2006 David Anderson
* Copyright (C) 2002, 2003, 2004, 2005, 2006 Red Hat, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* Kernel header file for Linux crash dumps.
*
* Created by: Matt Robinson ([email protected])
* Copyright 1999 Silicon Graphics, Inc. All rights reserved.
*
* vmdump.h to dump.h by: Matt D. Robinson ([email protected])
* Copyright 2001 Matt D. Robinson. All rights reserved.
*
* Most of this is the same old stuff from vmdump.h, except now we're
* actually a stand-alone driver plugged into the block layer interface,
* with the exception that we now allow for compression modes externally
* loaded (e.g., someone can come up with their own).
*/
/* This header file includes all structure definitions for crash dumps. */
#ifndef _DUMP_H
#define _DUMP_H
//#include <linux/list.h>
/* define TRUE and FALSE for use in our dump modules */
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef MCLX
/*
* MCLX NOTE: the architecture-specific headers are being ignored until
* deemed necessary; crash has never used them functionally, and only
* referencing them in the dump_sgi_environment() helper routines.
*/
/* necessary header files */
#include <asm/dump.h> /* for architecture-specific header */
#endif
#define UTSNAME_ENTRY_SZ 65
/* necessary header definitions in all cases */
#define DUMP_KIOBUF_NUMBER 0xdeadbeef /* special number for kiobuf maps */
/* size of a dump header page */
#define DUMP_PAGE_SZ 64 * 1024 /* size of dump page buffer */
/* header definitions for s390 dump */
#define DUMP_MAGIC_S390 0xa8190173618f23fdULL /* s390 magic number */
#define S390_DUMP_HEADER_SIZE 4096
/* standard header definitions */
#define DUMP_MAGIC_NUMBER 0xa8190173618f23edULL /* dump magic number */
#define DUMP_MAGIC_LIVE 0xa8190173618f23cdULL /* live magic number */
#define DUMP_VERSION_NUMBER 0x5 /* dump version number */
#define DUMP_PANIC_LEN 0x100 /* dump panic string length */
/* dump levels - type specific stuff added later -- add as necessary */
#define DUMP_LEVEL_NONE 0x0 /* no dumping at all -- just bail */
#define DUMP_LEVEL_HEADER 0x1 /* kernel dump header only */
#define DUMP_LEVEL_KERN 0x2 /* dump header and kernel pages */
#define DUMP_LEVEL_USED 0x4 /* dump header, kernel/user pages */
#define DUMP_LEVEL_ALL 0x8 /* dump header, all memory pages */
/* dump compression options -- add as necessary */
#define DUMP_COMPRESS_NONE 0x0 /* don't compress this dump */
#define DUMP_COMPRESS_RLE 0x1 /* use RLE compression */
#define DUMP_COMPRESS_GZIP 0x2 /* use GZIP compression */
/* dump flags - any dump-type specific flags -- add as necessary */
#define DUMP_FLAGS_NONE 0x0 /* no flags are set for this dump */
#define DUMP_FLAGS_NONDISRUPT 0x1 /* try to keep running after dump */
/* dump header flags -- add as necessary */
#define DUMP_DH_FLAGS_NONE 0x0 /* no flags set (error condition!) */
#define DUMP_DH_RAW 0x1 /* raw page (no compression) */
#define DUMP_DH_COMPRESSED 0x2 /* page is compressed */
#define DUMP_DH_END 0x4 /* end marker on a full dump */
/* names for various dump tunables (they are now all read-only) */
#define DUMP_ROOT_NAME "sys/dump"
#define DUMP_DEVICE_NAME "dump_device"
#define DUMP_COMPRESS_NAME "dump_compress"
#define DUMP_LEVEL_NAME "dump_level"
#define DUMP_FLAGS_NAME "dump_flags"
/* page size for gzip compression -- buffered beyond PAGE_SIZE slightly */
#define DUMP_DPC_PAGE_SIZE (PAGE_SIZE + 512)
/* dump ioctl() control options */
#define DIOSDUMPDEV 1 /* set the dump device */
#define DIOGDUMPDEV 2 /* get the dump device */
#define DIOSDUMPLEVEL 3 /* set the dump level */
#define DIOGDUMPLEVEL 4 /* get the dump level */
#define DIOSDUMPFLAGS 5 /* set the dump flag parameters */
#define DIOGDUMPFLAGS 6 /* get the dump flag parameters */
#define DIOSDUMPCOMPRESS 7 /* set the dump compress level */
#define DIOGDUMPCOMPRESS 8 /* get the dump compress level */
/* the major number used for the dumping device */
#ifndef DUMP_MAJOR
#define DUMP_MAJOR 227
#endif
/*
* Structure: dump_header_t
* Function: This is the header dumped at the top of every valid crash
* dump.
* easy reassembly of each crash dump page. The address bits
* are split to make things easier for 64-bit/32-bit system
* conversions.
*/
typedef struct _dump_header_s {
/* the dump magic number -- unique to verify dump is valid */
uint64_t dh_magic_number;
/* the version number of this dump */
uint32_t dh_version;
/* the size of this header (in case we can't read it) */
uint32_t dh_header_size;
/* the level of this dump (just a header?) */
uint32_t dh_dump_level;
/* the size of a Linux memory page (4K, 8K, 16K, etc.) */
uint32_t dh_page_size;
/* the size of all physical memory */
uint64_t dh_memory_size;
/* the start of physical memory */
uint64_t dh_memory_start;
/* the end of physical memory */
uint64_t dh_memory_end;
/* the number of pages in this dump specifically */
uint32_t dh_num_pages;
/* the panic string, if available */
char dh_panic_string[DUMP_PANIC_LEN];
/* the time of the system crash */
struct timeval dh_time;
/* the NEW utsname (uname) information -- in character form */
/* we do this so we don't have to include utsname.h */
/* plus it helps us be more architecture independent */
/* now maybe one day soon they'll make the [65] a #define! */
char dh_utsname_sysname[65];
char dh_utsname_nodename[65];
char dh_utsname_release[65];
char dh_utsname_version[65];
char dh_utsname_machine[65];
char dh_utsname_domainname[65];
/* the address of current task (OLD = task_struct *, NEW = void *) */
void *dh_current_task;
/* what type of compression we're using in this dump (if any) */
uint32_t dh_dump_compress;
/* any additional flags */
uint32_t dh_dump_flags;
/* any additional flags */
uint32_t dh_dump_device;
} dump_header_t;
/*
* Structure: dump_page_t
* Function: To act as the header associated to each physical page of
* memory saved in the system crash dump. This allows for
* easy reassembly of each crash dump page. The address bits
* are split to make things easier for 64-bit/32-bit system
* conversions.
*/
typedef struct _dump_page_s {
/* the address of this dump page */
uint64_t dp_address;
/* the size of this dump page */
uint32_t dp_size;
/* flags (currently DUMP_COMPRESSED, DUMP_RAW or DUMP_END) */
uint32_t dp_flags;
} dump_page_t;
/*
* This structure contains information needed for the lkcdutils
* package (particularly lcrash) to determine what information is
* associated to this kernel, specifically.
*/
typedef struct lkcdinfo_s {
int arch;
int ptrsz;
int byte_order;
int linux_release;
int page_shift;
int page_size;
uint64_t page_mask;
uint64_t page_offset;
int stack_offset;
} lkcdinfo_t;
#ifdef IA64
#define DUMP_ASM_MAGIC_NUMBER 0xdeaddeadULL /* magic number */
struct pt_regs {
/* The following registers are saved by SAVE_MIN: */
unsigned long b6; /* scratch */
unsigned long b7; /* scratch */
unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */
unsigned long ar_ssd; /* reserved for future use (scratch) */
unsigned long r8; /* scratch (return value register 0) */
unsigned long r9; /* scratch (return value register 1) */
unsigned long r10; /* scratch (return value register 2) */
unsigned long r11; /* scratch (return value register 3) */
unsigned long cr_ipsr; /* interrupted task's psr */
unsigned long cr_iip; /* interrupted task's instruction pointer */
unsigned long cr_ifs; /* interrupted task's function state */
unsigned long ar_unat; /* interrupted task's NaT register (preserved) */
unsigned long ar_pfs; /* prev function state */
unsigned long ar_rsc; /* RSE configuration */
/* The following two are valid only if cr_ipsr.cpl > 0: */
unsigned long ar_rnat; /* RSE NaT */
unsigned long ar_bspstore; /* RSE bspstore */
unsigned long pr; /* 64 predicate registers (1 bit each) */
unsigned long b0; /* return pointer (bp) */
unsigned long loadrs; /* size of dirty partition << 16 */
unsigned long r1; /* the gp pointer */
unsigned long r12; /* interrupted task's memory stack pointer */
unsigned long r13; /* thread pointer */
unsigned long ar_fpsr; /* floating point status (preserved) */
unsigned long r15; /* scratch */
/* The remaining registers are NOT saved for system calls. */
unsigned long r14; /* scratch */
unsigned long r2; /* scratch */
unsigned long r3; /* scratch */
/* The following registers are saved by SAVE_REST: */
unsigned long r16; /* scratch */
unsigned long r17; /* scratch */
unsigned long r18; /* scratch */
unsigned long r19; /* scratch */
unsigned long r20; /* scratch */
unsigned long r21; /* scratch */
unsigned long r22; /* scratch */
unsigned long r23; /* scratch */
unsigned long r24; /* scratch */
unsigned long r25; /* scratch */
unsigned long r26; /* scratch */
unsigned long r27; /* scratch */
unsigned long r28; /* scratch */
unsigned long r29; /* scratch */
unsigned long r30; /* scratch */
unsigned long r31; /* scratch */
unsigned long ar_ccv; /* compare/exchange value (scratch) */
/*
* Floating point registers that the kernel considers scratch:
*/
struct ia64_fpreg f6; /* scratch */
struct ia64_fpreg f7; /* scratch */
struct ia64_fpreg f8; /* scratch */
struct ia64_fpreg f9; /* scratch */
struct ia64_fpreg f10; /* scratch */
struct ia64_fpreg f11; /* scratch */
};
/*
* Structure: dump_header_asm_t
* Function: This is the header for architecture-specific stuff. It
* follows right after the dump header.
*/
typedef struct _dump_header_asm_s {
/* the dump magic number -- unique to verify dump is valid */
uint64_t dha_magic_number;
/* the version number of this dump */
uint32_t dha_version;
/* the size of this header (in case we can't read it) */
uint32_t dha_header_size;
/* pointer to pt_regs */
struct pt_regs *dha_pt_regs;
/* the dump registers */
struct pt_regs dha_regs;
/* the rnat register saved after flushrs */
uint64_t dha_rnat;
/* the pfs register saved after flushrs */
uint64_t dha_pfs;
/* the bspstore register saved after flushrs */
uint64_t dha_bspstore;
/* smp specific */
uint32_t dha_smp_num_cpus;
int dha_dumping_cpu;
struct pt_regs dha_smp_regs[NR_CPUS];
void * dha_smp_current_task[NR_CPUS];
void * dha_stack[NR_CPUS];
void * dha_switch_stack[NR_CPUS];
} dump_header_asm_t;
#define NR_CPUS 32
typedef struct _dump_header_asm_smp_s {
/* the dump magic number -- unique to verify dump is valid */
uint64_t dha_magic_number;
/* the version number of this dump */
uint32_t dha_version;
/* the size of this header (in case we can't read it) */
uint32_t dha_header_size;
/* pointer to pt_regs */
struct pt_regs *dha_pt_regs;
/* the dump registers */
struct pt_regs dha_regs;
/* the rnat register saved after flushrs */
uint64_t dha_rnat;
/* the pfs register saved after flushrs */
uint64_t dha_pfs;
/* the bspstore register saved after flushrs */
uint64_t dha_bspstore;
/* smp specific */
uint32_t dha_smp_num_cpus;
int dha_dumping_cpu;
struct pt_regs dha_smp_regs[NR_CPUS];
void * dha_smp_current_task[NR_CPUS];
void * dha_stack[NR_CPUS];
void * dha_switch_stack[NR_CPUS];
} dump_header_asm_smp_t;
#endif
#ifdef __KERNEL__
/*
* Structure: dump_compress_t
* Function: This is what an individual compression mechanism can use
* to plug in their own compression techniques. It's always
* best to build these as individual modules so that people
* can put in whatever they want.
*/
typedef struct dump_compress_s {
/* the list_head structure for list storage */
struct list_head list;
/* the type of compression to use (DUMP_COMPRESS_XXX) */
int compress_type;
/* the compression function to call */
int (*compress_func)(char *, int, char *, int);
} dump_compress_t;
extern int dump_init(void);
extern void dump_execute(char *, struct pt_regs *);
extern int page_is_ram(unsigned long);
#endif /* __KERNEL__ */
#endif /* _DUMP_H */