Differential D26131 Diff 76446 lib/libkvm/kvm_minidump_i386.c

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lib/libkvm/kvm_minidump_i386.c

Show First 20 Lines • Show All 85 Lines • ▼ Show 20 Lines	_i386_minidump_freevtop(kvm_t *kd)
free(vm);		free(vm);
kd->vmst = NULL;		kd->vmst = NULL;
}		}

static int		static int
_i386_minidump_initvtop(kvm_t *kd)		_i386_minidump_initvtop(kvm_t *kd)
{		{
struct vmstate *vmst;		struct vmstate *vmst;
off_t off, sparse_off;		off_t off, dump_avail_off, sparse_off;

vmst = _kvm_malloc(kd, sizeof(*vmst));		vmst = _kvm_malloc(kd, sizeof(*vmst));
if (vmst == NULL) {		if (vmst == NULL) {
_kvm_err(kd, kd->program, "cannot allocate vm");		_kvm_err(kd, kd->program, "cannot allocate vm");
return (-1);		return (-1);
}		}
kd->vmst = vmst;		kd->vmst = vmst;
if (pread(kd->pmfd, &vmst->hdr, sizeof(vmst->hdr), 0) !=		if (pread(kd->pmfd, &vmst->hdr, sizeof(vmst->hdr), 0) !=
sizeof(vmst->hdr)) {		sizeof(vmst->hdr)) {
_kvm_err(kd, kd->program, "cannot read dump header");		_kvm_err(kd, kd->program, "cannot read dump header");
return (-1);		return (-1);
}		}
if (strncmp(MINIDUMP_MAGIC, vmst->hdr.magic, sizeof(vmst->hdr.magic)) != 0) {		if (strncmp(MINIDUMP_MAGIC, vmst->hdr.magic, sizeof(vmst->hdr.magic)) != 0) {
_kvm_err(kd, kd->program, "not a minidump for this platform");		_kvm_err(kd, kd->program, "not a minidump for this platform");
return (-1);		return (-1);
}		}
vmst->hdr.version = le32toh(vmst->hdr.version);		vmst->hdr.version = le32toh(vmst->hdr.version);
if (vmst->hdr.version != MINIDUMP_VERSION) {		if (vmst->hdr.version != MINIDUMP_VERSION && vmst->hdr.version != 1) {
_kvm_err(kd, kd->program, "wrong minidump version. expected %d got %d",		_kvm_err(kd, kd->program, "wrong minidump version. expected %d got %d",
MINIDUMP_VERSION, vmst->hdr.version);		MINIDUMP_VERSION, vmst->hdr.version);
return (-1);		return (-1);
}		}
vmst->hdr.msgbufsize = le32toh(vmst->hdr.msgbufsize);		vmst->hdr.msgbufsize = le32toh(vmst->hdr.msgbufsize);
vmst->hdr.bitmapsize = le32toh(vmst->hdr.bitmapsize);		vmst->hdr.bitmapsize = le32toh(vmst->hdr.bitmapsize);
vmst->hdr.ptesize = le32toh(vmst->hdr.ptesize);		vmst->hdr.ptesize = le32toh(vmst->hdr.ptesize);
vmst->hdr.kernbase = le32toh(vmst->hdr.kernbase);		vmst->hdr.kernbase = le32toh(vmst->hdr.kernbase);
vmst->hdr.paemode = le32toh(vmst->hdr.paemode);		vmst->hdr.paemode = le32toh(vmst->hdr.paemode);
		vmst->hdr.dumpavailsize = vmst->hdr.version == MINIDUMP_VERSION ?
		le32toh(vmst->hdr.dumpavailsize) : 0;

/* Skip header and msgbuf */		/* Skip header and msgbuf */
off = I386_PAGE_SIZE + i386_round_page(vmst->hdr.msgbufsize);		dump_avail_off = I386_PAGE_SIZE + i386_round_page(vmst->hdr.msgbufsize);

		/* Skip dump_avail */
		off = dump_avail_off + i386_round_page(vmst->hdr.dumpavailsize);

sparse_off = off + i386_round_page(vmst->hdr.bitmapsize) +		sparse_off = off + i386_round_page(vmst->hdr.bitmapsize) +
i386_round_page(vmst->hdr.ptesize);		i386_round_page(vmst->hdr.ptesize);
if (_kvm_pt_init(kd, vmst->hdr.bitmapsize, off, sparse_off,		if (_kvm_pt_init(kd, vmst->hdr.dumpavailsize, dump_avail_off,
I386_PAGE_SIZE, sizeof(uint32_t)) == -1) {		vmst->hdr.bitmapsize, off, sparse_off, I386_PAGE_SIZE,
		sizeof(uint32_t)) == -1) {
return (-1);		return (-1);
}		}
off += i386_round_page(vmst->hdr.bitmapsize);		off += i386_round_page(vmst->hdr.bitmapsize);

if (_kvm_pmap_init(kd, vmst->hdr.ptesize, off) == -1) {		if (_kvm_pmap_init(kd, vmst->hdr.ptesize, off) == -1) {
return (-1);		return (-1);
}		}
off += i386_round_page(vmst->hdr.ptesize);		off += i386_round_page(vmst->hdr.ptesize);
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