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Differential D11584 Diff 32193 head/sys/arm64/arm64/minidump_machdep.c

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head/sys/arm64/arm64/minidump_machdep.c

Show First 20 Lines • Show All 52 Lines • ▼ Show 20 Lines
#include <vm/pmap.h> #include <vm/pmap.h>
#include <machine/md_var.h> #include <machine/md_var.h>
#include <machine/pte.h> #include <machine/pte.h>
#include <machine/minidump.h> #include <machine/minidump.h>
CTASSERT(sizeof(struct kerneldumpheader) == 512); CTASSERT(sizeof(struct kerneldumpheader) == 512);
/*
* Don't touch the first SIZEOF_METADATA bytes on the dump device. This
* is to protect us from metadata and to protect metadata from us.
*/
#define SIZEOF_METADATA (64*1024)
uint64_t *vm_page_dump; uint64_t *vm_page_dump;
int vm_page_dump_size; int vm_page_dump_size;
static struct kerneldumpheader kdh; static struct kerneldumpheader kdh;
static off_t dumplo; static off_t dumplo;
/* Handle chunked writes. */ /* Handle chunked writes. */
static size_t fragsz; static size_t fragsz;
▲ Show 20 Lines • Show All 201 Lines • ▼ Show 20 Lines while (bits) {
dumpsize += PAGE_SIZE; dumpsize += PAGE_SIZE;
else else
dump_drop_page(pa); dump_drop_page(pa);
bits &= ~(1ul << bit); bits &= ~(1ul << bit);
} }
} }
dumpsize += PAGE_SIZE; dumpsize += PAGE_SIZE;
/* Determine dump offset on device. */
if (di->mediasize < SIZEOF_METADATA + dumpsize + di->blocksize * 2 +
kerneldumpcrypto_dumpkeysize(di->kdc)) {
error = E2BIG;
goto fail;
}
dumplo = di->mediaoffset + di->mediasize - dumpsize;
dumplo -= di->blocksize * 2;
dumplo -= kerneldumpcrypto_dumpkeysize(di->kdc);
progress = dumpsize; progress = dumpsize;
/* Initialize kernel dump crypto. */
error = kerneldumpcrypto_init(di->kdc);
if (error)
goto fail;
/* Initialize mdhdr */ /* Initialize mdhdr */
bzero(&mdhdr, sizeof(mdhdr)); bzero(&mdhdr, sizeof(mdhdr));
strcpy(mdhdr.magic, MINIDUMP_MAGIC); strcpy(mdhdr.magic, MINIDUMP_MAGIC);
mdhdr.version = MINIDUMP_VERSION; mdhdr.version = MINIDUMP_VERSION;
mdhdr.msgbufsize = msgbufp->msg_size; mdhdr.msgbufsize = msgbufp->msg_size;
mdhdr.bitmapsize = vm_page_dump_size; mdhdr.bitmapsize = vm_page_dump_size;
mdhdr.pmapsize = pmapsize; mdhdr.pmapsize = pmapsize;
mdhdr.kernbase = VM_MIN_KERNEL_ADDRESS; mdhdr.kernbase = VM_MIN_KERNEL_ADDRESS;
mdhdr.dmapphys = DMAP_MIN_PHYSADDR; mdhdr.dmapphys = DMAP_MIN_PHYSADDR;
mdhdr.dmapbase = DMAP_MIN_ADDRESS; mdhdr.dmapbase = DMAP_MIN_ADDRESS;
mdhdr.dmapend = DMAP_MAX_ADDRESS; mdhdr.dmapend = DMAP_MAX_ADDRESS;
mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_AARCH64_VERSION, mkdumpheader(&kdh, KERNELDUMPMAGIC, KERNELDUMP_AARCH64_VERSION,
dumpsize, kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize); dumpsize, kerneldumpcrypto_dumpkeysize(di->kdc), di->blocksize);
printf("Dumping %llu out of %ju MB:", (long long)dumpsize >> 20, printf("Dumping %llu out of %ju MB:", (long long)dumpsize >> 20,
ptoa((uintmax_t)physmem) / 1048576); ptoa((uintmax_t)physmem) / 1048576);
/* Dump leader */ error = dump_start(di, &kdh, &dumplo);
error = dump_write_header(di, &kdh, 0, dumplo); if (error != 0)
if (error)
goto fail; goto fail;
dumplo += di->blocksize;
/* Dump key */
error = dump_write_key(di, 0, dumplo);
if (error)
goto fail;
dumplo += kerneldumpcrypto_dumpkeysize(di->kdc);
/* Dump my header */ /* Dump my header */
bzero(&tmpbuffer, sizeof(tmpbuffer)); bzero(&tmpbuffer, sizeof(tmpbuffer));
bcopy(&mdhdr, &tmpbuffer, sizeof(mdhdr)); bcopy(&mdhdr, &tmpbuffer, sizeof(mdhdr));
error = blk_write(di, (char *)&tmpbuffer, 0, PAGE_SIZE); error = blk_write(di, (char *)&tmpbuffer, 0, PAGE_SIZE);
if (error) if (error)
goto fail; goto fail;
/* Dump msgbuf up front */ /* Dump msgbuf up front */
▲ Show 20 Lines • Show All 80 Lines • ▼ Show 20 Lines while (bits) {
bits &= ~(1ul << bit); bits &= ~(1ul << bit);
} }
} }
error = blk_flush(di); error = blk_flush(di);
if (error) if (error)
goto fail; goto fail;
/* Dump trailer */ error = dump_finish(di, &kdh, dumplo);
error = dump_write_header(di, &kdh, 0, dumplo); if (error != 0)
if (error)
goto fail; goto fail;
dumplo += di->blocksize;
/* Signal completion, signoff and exit stage left. */
dump_write(di, NULL, 0, 0, 0);
printf("\nDump complete\n"); printf("\nDump complete\n");
return (0); return (0);
fail: fail:
if (error < 0) if (error < 0)
error = -error; error = -error;
printf("\n"); printf("\n");
if (error == ENOSPC) { if (error == ENOSPC) {
printf("Dump map grown while dumping. "); printf("Dump map grown while dumping. ");
if (retry_count < 5) { if (retry_count < 5) {
printf("Retrying...\n"); printf("Retrying...\n");
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