VbError_t VbGbbReadHWID(struct vb2_context *ctx, char *hwid, uint32_t max_size)
{
struct vb2_shared_data *sd = vb2_get_sd(ctx);
if (!max_size)
return VBERROR_INVALID_PARAMETER;
*hwid = '\0';
StrnAppend(hwid, "{INVALID}", max_size);
if (!ctx)
return VBERROR_INVALID_GBB;
if (0 == sd->gbb->hwid_size) {
VB2_DEBUG("VbHWID(): invalid hwid size\n");
return VBERROR_SUCCESS; /* oddly enough! */
}
if (sd->gbb->hwid_size > max_size) {
VB2_DEBUG("VbDisplayDebugInfo(): invalid hwid offset/size\n");
return VBERROR_INVALID_PARAMETER;
}
return VbGbbReadData(ctx, sd->gbb->hwid_offset,
sd->gbb->hwid_size, hwid);
}
static const char* DumpCgptAddParams(const CgptAddParams *params) {
static char buf[256];
char tmp[64];
buf[0] = 0;
snprintf(tmp, sizeof(tmp), "-i %d ", params->partition);
StrnAppend(buf, tmp, sizeof(buf));
if (params->label) {
snprintf(tmp, sizeof(tmp), "-l %s ", params->label);
StrnAppend(buf, tmp, sizeof(buf));
}
if (params->set_begin) {
snprintf(tmp, sizeof(tmp), "-b %llu ", (unsigned long long)params->begin);
StrnAppend(buf, tmp, sizeof(buf));
}
if (params->set_size) {
snprintf(tmp, sizeof(tmp), "-s %llu ", (unsigned long long)params->size);
StrnAppend(buf, tmp, sizeof(buf));
}
if (params->set_type) {
GuidToStr(¶ms->type_guid, tmp, sizeof(tmp));
StrnAppend(buf, "-t ", sizeof(buf));
StrnAppend(buf, tmp, sizeof(buf));
StrnAppend(buf, " ", sizeof(buf));
}
if (params->set_unique) {
GuidToStr(¶ms->unique_guid, tmp, sizeof(tmp));
StrnAppend(buf, "-u ", sizeof(buf));
StrnAppend(buf, tmp, sizeof(buf));
StrnAppend(buf, " ", sizeof(buf));
}
if (params->set_successful) {
snprintf(tmp, sizeof(tmp), "-S %d ", params->successful);
StrnAppend(buf, tmp, sizeof(buf));
}
if (params->set_tries) {
snprintf(tmp, sizeof(tmp), "-T %d ", params->tries);
StrnAppend(buf, tmp, sizeof(buf));
}
if (params->set_priority) {
snprintf(tmp, sizeof(tmp), "-P %d ", params->priority);
StrnAppend(buf, tmp, sizeof(buf));
}
if (params->set_raw) {
snprintf(tmp, sizeof(tmp), "-A 0x%x ", params->raw_value);
StrnAppend(buf, tmp, sizeof(buf));
}
StrnAppend(buf, "\n", sizeof(buf));
return buf;
}
VbError_t VbDisplayDebugInfo(VbCommonParams *cparams, VbNvContext *vncptr)
{
VbSharedDataHeader *shared =
(VbSharedDataHeader *)cparams->shared_data_blob;
GoogleBinaryBlockHeader *gbb = cparams->gbb;
char buf[DEBUG_INFO_SIZE] = "";
char sha1sum[SHA1_DIGEST_SIZE * 2 + 1];
char hwid[256];
uint32_t used = 0;
VbPublicKey *key;
VbError_t ret;
uint32_t i;
/* Redisplay current screen to overwrite any previous debug output */
VbDisplayScreen(cparams, disp_current_screen, 1, vncptr);
/* Add hardware ID */
VbRegionReadHWID(cparams, hwid, sizeof(hwid));
used += StrnAppend(buf + used, "HWID: ", DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, hwid, DEBUG_INFO_SIZE - used);
/* Add recovery reason */
used += StrnAppend(buf + used,
"\nrecovery_reason: 0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->recovery_reason, 16, 2);
used += StrnAppend(buf + used, " ", DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used,
RecoveryReasonString(shared->recovery_reason),
DEBUG_INFO_SIZE - used);
/* Add VbSharedData flags */
used += StrnAppend(buf + used, "\nVbSD.flags: 0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->flags, 16, 8);
/* Add raw contents of VbNvStorage */
used += StrnAppend(buf + used, "\nVbNv.raw:", DEBUG_INFO_SIZE - used);
for (i = 0; i < VBNV_BLOCK_SIZE; i++) {
used += StrnAppend(buf + used, " ", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
vncptr->raw[i], 16, 2);
}
/* Add dev_boot_usb flag */
VbNvGet(vncptr, VBNV_DEV_BOOT_USB, &i);
used += StrnAppend(buf + used, "\ndev_boot_usb: ", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0);
/* Add dev_boot_legacy flag */
VbNvGet(vncptr, VBNV_DEV_BOOT_LEGACY, &i);
used += StrnAppend(buf + used,
"\ndev_boot_legacy: ", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0);
/* Add dev_boot_signed_only flag */
VbNvGet(vncptr, VBNV_DEV_BOOT_SIGNED_ONLY, &i);
used += StrnAppend(buf + used, "\ndev_boot_signed_only: ",
DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used, i, 10, 0);
/* Add TPM versions */
used += StrnAppend(buf + used, "\nTPM: fwver=0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->fw_version_tpm, 16, 8);
used += StrnAppend(buf + used, " kernver=0x", DEBUG_INFO_SIZE - used);
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
shared->kernel_version_tpm, 16, 8);
/* Add GBB flags */
used += StrnAppend(buf + used, "\ngbb.flags: 0x", DEBUG_INFO_SIZE - used);
if (gbb->major_version == GBB_MAJOR_VER && gbb->minor_version >= 1) {
used += Uint64ToString(buf + used, DEBUG_INFO_SIZE - used,
gbb->flags, 16, 8);
} else {
used += StrnAppend(buf + used,
"0 (default)", DEBUG_INFO_SIZE - used);
}
/* Add sha1sum for Root & Recovery keys */
ret = VbGbbReadRootKey(cparams, &key);
if (!ret) {
FillInSha1Sum(sha1sum, key);
VbExFree(key);
used += StrnAppend(buf + used, "\ngbb.rootkey: ",
DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, sha1sum,
DEBUG_INFO_SIZE - used);
}
ret = VbGbbReadRecoveryKey(cparams, &key);
if (!ret) {
FillInSha1Sum(sha1sum, key);
VbExFree(key);
used += StrnAppend(buf + used, "\ngbb.recovery_key: ",
DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, sha1sum,
DEBUG_INFO_SIZE - used);
}
/* If we're in dev-mode, show the kernel subkey that we expect, too. */
if (0 == shared->recovery_reason) {
FillInSha1Sum(sha1sum, &shared->kernel_subkey);
used += StrnAppend(buf + used,
"\nkernel_subkey: ", DEBUG_INFO_SIZE - used);
used += StrnAppend(buf + used, sha1sum, DEBUG_INFO_SIZE - used);
}
/* Make sure we finish with a newline */
used += StrnAppend(buf + used, "\n", DEBUG_INFO_SIZE - used);
/* TODO: add more interesting data:
* - Information on current disks */
buf[DEBUG_INFO_SIZE - 1] = '\0';
return VbExDisplayDebugInfo(buf);
}
