fs_mgr: disable verified partitions on debuggable devices.

This checks ro.debuggable to determine whether a device is in the
debuggable state or not, disabling verification if it is.

Eventually we'd like to narrow this down to only devices which
need to disable it, but we aren't there yet.

Change-Id: I06a329fe5449deab6bae595877dbb1f200850241

fs_mgr/fs_mgr.c

@@ -234,6 +234,15 @@ static int fs_match(char *in1, char *in2)
     return ret;
 }
 
+static int device_is_debuggable() {
+    int ret = -1;
+    char value[PROP_VALUE_MAX];
+    ret = __system_property_get("ro.debuggable", value);
+    if (ret < 0)
+        return ret;
+    return strcmp(value, "1") ? 0 : 1;
+}
+
 int fs_mgr_mount_all(struct fstab *fstab)
 {
     int i = 0;
@@ -268,7 +277,8 @@ int fs_mgr_mount_all(struct fstab *fstab)
                      fstab->recs[i].mount_point);
         }
 
-        if (fstab->recs[i].fs_mgr_flags & MF_VERIFY) {
+        if ((fstab->recs[i].fs_mgr_flags & MF_VERIFY) &&
+            !device_is_debuggable()) {
             if (fs_mgr_setup_verity(&fstab->recs[i]) < 0) {
                 ERROR("Could not set up verified partition, skipping!");
                 continue;
@@ -373,7 +383,8 @@ int fs_mgr_do_mount(struct fstab *fstab, char *n_name, char *n_blk_device,
                      fstab->recs[i].mount_point);
         }
 
-        if (fstab->recs[i].fs_mgr_flags & MF_VERIFY) {
+        if ((fstab->recs[i].fs_mgr_flags & MF_VERIFY) &&
+            !device_is_debuggable()) {
             if (fs_mgr_setup_verity(&fstab->recs[i]) < 0) {
                 ERROR("Could not set up verified partition, skipping!");
                 continue;