From 5268131918bc9ffdcd2f82de12778247bf86782e Mon Sep 17 00:00:00 2001
From: Koushik Dutta <koushd@gmail.com>
Date: Wed, 31 Aug 2011 23:26:45 -0700
Subject: [PATCH] allow explicitly provided mount locations

Change-Id: I3930b2abeb81c09c25c1750f0545c233c0d5a4a2
---
 roots.c | 25 ++++++++++++++++---------
 roots.h |  1 +
 2 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/roots.c b/roots.c
index 527fc59..ba1786b 100644
--- a/roots.c
+++ b/roots.c
@@ -176,6 +176,10 @@ void setup_data_media() {
 }
 
 int ensure_path_mounted(const char* path) {
+    return ensure_path_mounted_at_mount_point(path, NULL);
+}
+
+int ensure_path_mounted_at_mount_point(const char* path, const char* mount_point) {
     Volume* v = volume_for_path(path);
     if (v == NULL) {
         // no /sdcard? let's assume /data/media
@@ -202,14 +206,17 @@ int ensure_path_mounted(const char* path) {
         return -1;
     }
 
+    if (NULL == mount_point)
+        mount_point = v->mount_point;
+
     const MountedVolume* mv =
-        find_mounted_volume_by_mount_point(v->mount_point);
+        find_mounted_volume_by_mount_point(mount_point);
     if (mv) {
         // volume is already mounted
         return 0;
     }
 
-    mkdir(v->mount_point, 0755);  // in case it doesn't already exist
+    mkdir(mount_point, 0755);  // in case it doesn't already exist
 
     if (strcmp(v->fs_type, "yaffs2") == 0) {
         // mount an MTD partition as a YAFFS2 filesystem.
@@ -218,21 +225,21 @@ int ensure_path_mounted(const char* path) {
         partition = mtd_find_partition_by_name(v->device);
         if (partition == NULL) {
             LOGE("failed to find \"%s\" partition to mount at \"%s\"\n",
-                 v->device, v->mount_point);
+                 v->device, mount_point);
             return -1;
         }
-        return mtd_mount_partition(partition, v->mount_point, v->fs_type, 0);
+        return mtd_mount_partition(partition, mount_point, v->fs_type, 0);
     } else if (strcmp(v->fs_type, "ext4") == 0 ||
                strcmp(v->fs_type, "ext3") == 0 ||
                strcmp(v->fs_type, "rfs") == 0 ||
                strcmp(v->fs_type, "vfat") == 0) {
-        if ((result = try_mount(v->device, v->mount_point, v->fs_type, v->fs_options)) == 0)
+        if ((result = try_mount(v->device, mount_point, v->fs_type, v->fs_options)) == 0)
             return 0;
-        if ((result = try_mount(v->device2, v->mount_point, v->fs_type, v->fs_options)) == 0)
+        if ((result = try_mount(v->device2, mount_point, v->fs_type, v->fs_options)) == 0)
             return 0;
-        if ((result = try_mount(v->device, v->mount_point, v->fs_type2, v->fs_options2)) == 0)
+        if ((result = try_mount(v->device, mount_point, v->fs_type2, v->fs_options2)) == 0)
             return 0;
-        if ((result = try_mount(v->device2, v->mount_point, v->fs_type2, v->fs_options2)) == 0)
+        if ((result = try_mount(v->device2, mount_point, v->fs_type2, v->fs_options2)) == 0)
             return 0;
         return result;
     } else {
@@ -242,7 +249,7 @@ int ensure_path_mounted(const char* path) {
         return __system(mount_cmd);
     }
 
-    LOGE("unknown fs_type \"%s\" for %s\n", v->fs_type, v->mount_point);
+    LOGE("unknown fs_type \"%s\" for %s\n", v->fs_type, mount_point);
     return -1;
 }
 
diff --git a/roots.h b/roots.h
index 7914307..af82280 100644
--- a/roots.h
+++ b/roots.h
@@ -28,6 +28,7 @@ Volume* volume_for_path(const char* path);
 // Make sure that the volume 'path' is on is mounted.  Returns 0 on
 // success (volume is mounted).
 int ensure_path_mounted(const char* path);
+int ensure_path_mounted_at_mount_point(const char* path, const char* mount_point);
 
 // Make sure that the volume 'path' is on is mounted.  Returns 0 on
 // success (volume is unmounted);