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Sanity-check output of VbExDiskGetInfo()

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BUG=chromium-os:22724
TEST=none

Source change only, nothing for QA to test.

Change-Id: I058137c04622b5aedae4a94ce6e3887325c16974
Reviewed-on: https://gerrit.chromium.org/gerrit/11546
Tested-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-by: Gaurav Shah <gauravsh@chromium.org>
This commit is contained in:
Bill Richardson
2011-11-11 13:16:51 -08:00
parent 29efa17737
commit 01bf572be8
1 changed files with 9 additions and 0 deletions
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9
firmware/lib/vboot_api_kernel.c
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@@ -69,6 +69,15 @@ uint32_t VbTryLoadKernel(VbCommonParams* cparams, LoadKernelParams* p,
/* Loop over disks */
for (i = 0; i < disk_count; i++) {
VBDEBUG(("VbTryLoadKernel() trying disk %d\n", (int)i));
/* Sanity-check what we can. FWIW, VbTryLoadKernel() is always called
* with only a single bit set in get_info_flags
*/
if (512 != disk_info[i].bytes_per_lba || /* cgptlib restriction */
32 > disk_info[i].lba_count || /* ditto */
get_info_flags != disk_info[i].flags) { /* got only what we asked for */
VBDEBUG((" skipping - bogus parameters\n"));
continue;
}
p->disk_handle = disk_info[i].handle;
p->bytes_per_lba = disk_info[i].bytes_per_lba;
p->ending_lba = disk_info[i].lba_count - 1;