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fs_mgr: Fix disable-verity for verifyatboot partitions 

This allows a remount to be performed on partitions which have been
verified at boot, without causing the verity service to complain of
"corrupted" blocks that could have been modified as a result of a
remount (while the verity checksum remained unchanged).

(cherry picked from commit dd78ae75ff)

Bug: 32638755
Test: Compile
Change-Id: I77cf7dd20ee5c5f5dac80f73f292e32583fe5906
This commit is contained in:
Prashant Malani 2016-11-11 15:20:10 -08:00 committed by bowgotsai
parent 2cdc67eed5
commit 17f248d2e4
1 changed files with 8 additions and 4 deletions
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12
fs_mgr/fs_mgr_verity.cpp
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@ -825,7 +825,7 @@ int fs_mgr_update_verity_state(fs_mgr_verity_state_callback callback)
char fstab_filename[PROPERTY_VALUE_MAX + sizeof(FSTAB_PREFIX)];
const char *mount_point;
char propbuf[PROPERTY_VALUE_MAX];
char *status;
const char *status;
int fd = -1;
int i;
int mode;
@ -875,9 +875,13 @@ int fs_mgr_update_verity_state(fs_mgr_verity_state_callback callback)
verity_ioctl_init(io, mount_point, 0);
if (ioctl(fd, DM_TABLE_STATUS, io)) {
ERROR("Failed to query DM_TABLE_STATUS for %s (%s)\n", mount_point,
strerror(errno));
continue;
if (fstab->recs[i].fs_mgr_flags & MF_VERIFYATBOOT) {
status = "V";
} else {
ERROR("Failed to query DM_TABLE_STATUS for %s (%s)\n", mount_point,
strerror(errno));
continue;
}
}
status = &buffer[io->data_start + sizeof(struct dm_target_spec)];