commit e068a491c2413aeaf4ffde562dc88dbc32db6067
author Daniel Rosenberg <drosen@google.com> Thu Jun 26 15:35:24 2014 -0700
committer Daniel Rosenberg <drosen@google.com> Tue Jul 15 17:07:55 2014 -0700
tree 73d3441da13c3e383a6f0e4a015e79c28571cc0c
parent 231bdba012fd7e6d545d8ba67b32e49a66ec52e0

Fat.cpp: Tuned FAT parameters according to SD Association recommendations.

Updated cluster size to be 32k, and aligned the starting cluster of the root
directory to be cluster aligned.

Change-Id: I759997569f7a0263a076cc462b235a6cf54e0c5f
Signed-off-by: Daniel Rosenberg <drosen@google.com>

Fat.cpp

diff --git a/Fat.cpp b/Fat.cpp
index c967a90..cd4ea5f 100644
--- a/Fat.cpp
+++ b/Fat.cpp
@@ -171,7 +171,7 @@
 
 int Fat::format(const char *fsPath, unsigned int numSectors, bool wipe) {
     int fd;
-    const char *args[10];
+    const char *args[11];
     int rc;
     int status;
 
@@ -185,20 +185,21 @@
     args[3] = "-O";
     args[4] = "android";
     args[5] = "-c";
-    args[6] = "8";
+    args[6] = "64";
+    args[7] = "-A";
 
     if (numSectors) {
         char tmp[32];
         snprintf(tmp, sizeof(tmp), "%u", numSectors);
         const char *size = tmp;
-        args[7] = "-s";
-        args[8] = size;
-        args[9] = fsPath;
+        args[8] = "-s";
+        args[9] = size;
+        args[10] = fsPath;
         rc = android_fork_execvp(ARRAY_SIZE(args), (char **)args, &status,
                 false, true);
     } else {
-        args[7] = fsPath;
-        rc = android_fork_execvp(8, (char **)args, &status, false,
+        args[8] = fsPath;
+        rc = android_fork_execvp(9, (char **)args, &status, false,
                 true);
     }