Add init command to set verified properties

Add a command that updates dm-verity state and sets partition.%.verified
properties used by adb remount.

This is needed in init since fs_mgr cannot set properties:
    I6a28cccb1ccce960841af20a4b20c32d424b5524

Change-Id: I0fdf5bc29c56690dcadff9d0eb216d3c68483538

3 files changed, 27 insertions, 0 deletions

diff --git a/init/builtins.cpp b/init/builtins.cpp
index fb1aa7c..01217c1 100644
--- a/init/builtins.cpp
+++ b/init/builtins.cpp
@@ -687,6 +687,30 @@ int do_verity_load_state(int nargs, char **args) {
     return -1;
 }
 
+static void verity_update_property(struct fstab_rec *fstab,
+                    const char *mount_point, int status) {
+    char key[PROP_NAME_MAX];
+    int ret;
+
+    ret = snprintf(key, PROP_NAME_MAX, "partition.%s.verified", mount_point);
+    if (ret >= PROP_NAME_MAX) {
+        ERROR("Error setting verified property for %s: name too long\n",
+            mount_point);
+        return;
+    }
+
+    ret = property_set(key, "1");
+    if (ret < 0)
+        ERROR("Error setting verified property %s: %d\n", key, ret);
+}
+
+int do_verity_update_state(int nargs, char **args) {
+    if (nargs == 1) {
+        return fs_mgr_update_verity_state(verity_update_property);
+    }
+    return -1;
+}
+
 int do_write(int nargs, char **args)
 {
     const char *path = args[1];
diff --git a/init/init_parser.cpp b/init/init_parser.cpp
index f3d34b2..7db203f 100644
--- a/init/init_parser.cpp
+++ b/init/init_parser.cpp
@@ -202,6 +202,7 @@ static int lookup_keyword(const char *s)
         break;
     case 'v':
         if (!strcmp(s, "erity_load_state")) return K_verity_load_state;
+        if (!strcmp(s, "erity_update_state")) return K_verity_update_state;
         break;
     case 'w':
         if (!strcmp(s, "rite")) return K_write;
diff --git a/init/keywords.h b/init/keywords.h
index c8327c3..09f645b 100644
--- a/init/keywords.h
+++ b/init/keywords.h
@@ -37,6 +37,7 @@ int do_loglevel(int nargs, char **args);
 int do_load_persist_props(int nargs, char **args);
 int do_load_all_props(int nargs, char **args);
 int do_verity_load_state(int nargs, char **args);
+int do_verity_update_state(int nargs, char **args);
 int do_wait(int nargs, char **args);
 #define __MAKE_KEYWORD_ENUM__
 #define KEYWORD(symbol, flags, nargs, func) K_##symbol,
@@ -89,6 +90,7 @@ enum {
     KEYWORD(sysclktz,    COMMAND, 1, do_sysclktz)
     KEYWORD(user,        OPTION,  0, 0)
     KEYWORD(verity_load_state,      COMMAND, 0, do_verity_load_state)
+    KEYWORD(verity_update_state,    COMMAND, 0, do_verity_update_state)
     KEYWORD(wait,        COMMAND, 1, do_wait)
     KEYWORD(write,       COMMAND, 2, do_write)
     KEYWORD(copy,        COMMAND, 2, do_copy)