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Retain offset compatibility with pre-12.0 dumps

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As a follow-up to r324965, which adds support for compressed kernel dumps,
readjust dump header members slightly to mostly preserve ABI with earlier
(11.x and older) dumps.

Reviewed by:	markj
X-MFC-With:	r324965
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D15829
This commit is contained in:
Conrad Meyer 2018-06-15 19:02:53 +00:00
parent 6f3fcd7693
commit e6e49c7df4
1 changed files with 6 additions and 5 deletions
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11
sys/sys/kerneldump.h
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@ -81,8 +81,8 @@ struct kerneldumpheader {
#define KERNELDUMPMAGIC_CLEARED "Cleared Kernel Dump"
char architecture[12];
uint32_t version;
#define KERNELDUMPVERSION 3
#define KERNELDUMP_TEXT_VERSION 3
#define KERNELDUMPVERSION 4
#define KERNELDUMP_TEXT_VERSION 4
uint32_t architectureversion;
#define KERNELDUMP_AARCH64_VERSION 1
#define KERNELDUMP_AMD64_VERSION 2
@ -93,14 +93,15 @@ struct kerneldumpheader {
#define KERNELDUMP_RISCV_VERSION 1
#define KERNELDUMP_SPARC64_VERSION 1
uint64_t dumplength; /* excl headers */
uint64_t dumpextent;
uint64_t dumptime;
uint32_t dumpkeysize;
uint32_t blocksize;
uint8_t compression;
char hostname[64];
char versionstring[192];
char panicstring[179];
char panicstring[175];
uint8_t compression;
uint64_t dumpextent;
char unused[4];
uint32_t parity;
};