Upload fsck logs to the dropbox when error found

If fsck made changes to the filesystem, then upload
the logs to the dropbox.  We can then get them into
Android Problem Reports.

Bug: 10021342

Change-Id: I202d2b2ba4060a2f379ca78f1b3f2c7a3f5796e0

1 files changed, 28 insertions, 0 deletions

diff --git a/services/java/com/android/server/BootReceiver.java b/services/java/com/android/server/BootReceiver.java
index 3dade3733bb6..da1b2548238f 100644
--- a/services/java/com/android/server/BootReceiver.java
+++ b/services/java/com/android/server/BootReceiver.java
@@ -127,6 +127,7 @@ public class BootReceiver extends BroadcastReceiver {
             addFileToDropBox(db, prefs, headers, "/data/dontpanic/apanic_threads",
                     -LOG_SIZE, "APANIC_THREADS");
             addAuditErrorsToDropBox(db, prefs, headers, -LOG_SIZE, "SYSTEM_AUDIT");
+            addFsckErrorsToDropBox(db, prefs, headers, -LOG_SIZE, "SYSTEM_FSCK");
         } else {
             if (db != null) db.addText("SYSTEM_RESTART", headers);
         }
@@ -203,4 +204,31 @@ public class BootReceiver extends BroadcastReceiver {
         Slog.i(TAG, "Copied " + sb.toString().length() + " worth of audits to DropBox");
         db.addText(tag, headers + sb.toString());
     }
+
+    private static void addFsckErrorsToDropBox(DropBoxManager db,  SharedPreferences prefs,
+            String headers, int maxSize, String tag) throws IOException {
+        boolean upload_needed = false;
+        if (db == null || !db.isTagEnabled(tag)) return;  // Logging disabled
+        Slog.i(TAG, "Checking for fsck errors");
+
+        File file = new File("/dev/fscklogs/log");
+        long fileTime = file.lastModified();
+        if (fileTime <= 0) return;  // File does not exist
+
+        String log = FileUtils.readTextFile(file, maxSize, "[[TRUNCATED]]\n");
+        StringBuilder sb = new StringBuilder();
+        for (String line : log.split("\n")) {
+            if (line.contains("FILE SYSTEM WAS MODIFIED")) {
+                upload_needed = true;
+                break;
+            }
+        }
+
+        if (upload_needed) {
+            addFileToDropBox(db, prefs, headers, "/dev/fscklogs/log", maxSize, tag);
+        }
+
+        // Remove the file so we don't re-upload if the runtime restarts.
+        file.delete();
+    }
 }