Add "changepw" command to vdc.p9.0

* Before moving to binder, 'changepw' was
  supported, and people used it to set
  different FDE decryption pwd from the
  lockscreen one. This change adds it back.

Change-Id: Id83ebb8eafe15263d8a694da9a3353866f912e3f

1 files changed, 19 insertions, 0 deletions

diff --git a/vdc.cpp b/vdc.cpp
index 3c449ae..df41cd1 100644
--- a/vdc.cpp
+++ b/vdc.cpp
@@ -38,6 +38,8 @@
 
 #include <private/android_filesystem_config.h>
 
+#include "cryptfs.h"
+
 static void usage(char *progname);
 
 static android::sp<android::IBinder> getServiceAggressive() {
@@ -61,6 +63,20 @@ static void checkStatus(android::binder::Status status) {
     exit(ENOTTY);
 }
 
+static int getType(const std::string &type) {
+    if (type == "default") {
+        return CRYPT_TYPE_DEFAULT;
+    } else if (type == "password") {
+        return CRYPT_TYPE_PASSWORD;
+    } else if (type == "pin") {
+        return CRYPT_TYPE_PIN;
+    } else if (type == "pattern") {
+        return CRYPT_TYPE_PATTERN;
+    } else {
+        return -1;
+    }
+}
+
 int main(int argc, char** argv) {
     setenv("ANDROID_LOG_TAGS", "*:v", 1);
     if (getppid() == 1) {
@@ -105,6 +121,9 @@ int main(int argc, char** argv) {
         checkStatus(vold->mountFstab(args[2]));
     } else if (args[0] == "cryptfs" && args[1] == "encryptFstab" && args.size() == 3) {
         checkStatus(vold->encryptFstab(args[2]));
+    } else if (args[0] == "cryptfs" && args[1] == "changepw" && args.size() == 5) {
+        int type = getType(args[2]);
+        checkStatus(vold->fdeChangePassword(type, args[3], args[4]));
     } else {
         LOG(ERROR) << "Raw commands are no longer supported";
         exit(EINVAL);