uncrypt: Write status when it reboots to factory reset

When it reboots into recovery for a factory reset, it still needs to
write the uncrypt status (-1) to the pipe.

Bug: 21511893
Change-Id: I1a725820f1e1875146e49b5a6f28af2fbf284fc7

1 files changed, 10 insertions, 7 deletions

diff --git a/uncrypt/uncrypt.cpp b/uncrypt/uncrypt.cpp
index 6e670a4..1db3013 100644
--- a/uncrypt/uncrypt.cpp
+++ b/uncrypt/uncrypt.cpp
@@ -427,26 +427,29 @@ int main(int argc, char** argv) {
         wipe_misc();
         reboot_to_recovery();
     } else {
-        std::string package;
+        // The pipe has been created by the system server.
+        int status_fd = open(status_file.c_str(), O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR);
+        if (status_fd == -1) {
+            ALOGE("failed to open pipe \"%s\": %s\n", status_file.c_str(), strerror(errno));
+            return 1;
+        }
+
         if (argc == 3) {
             // when command-line args are given this binary is being used
             // for debugging.
             input_path = argv[1];
             map_file = argv[2];
         } else {
+            std::string package;
             if (!find_uncrypt_package(package)) {
+                android::base::WriteStringToFd("-1\n", status_fd);
+                close(status_fd);
                 return 1;
             }
             input_path = package.c_str();
             map_file = cache_block_map.c_str();
         }
 
-        // The pipe has been created by the system server.
-        int status_fd = open(status_file.c_str(), O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR);
-        if (status_fd == -1) {
-            ALOGE("failed to open pipe \"%s\": %s\n", status_file.c_str(), strerror(errno));
-            return 1;
-        }
         int status = uncrypt(input_path, map_file, status_fd);
         if (status != 0) {
             android::base::WriteStringToFd("-1\n", status_fd);