From 3f092f7778ed608d454df4c3dc3b3f7cb4afde3b Mon Sep 17 00:00:00 2001
From: Tom Marshall <tdm@cyngn.com>
Date: Mon, 24 Nov 2014 16:02:04 -0800
Subject: recovery: Awakening of MiniVold

A minimal vold client for recovery.

Change-Id: Id25d955dc1861a910e5f5fc27d9a19e245d66833
---
 mtdutils/mounts.c | 15 +++++++++++++++
 mtdutils/mounts.h |  1 +
 2 files changed, 16 insertions(+)

(limited to 'mtdutils')

diff --git a/mtdutils/mounts.c b/mtdutils/mounts.c
index 6a9b03d..41efa37 100644
--- a/mtdutils/mounts.c
+++ b/mtdutils/mounts.c
@@ -153,6 +153,21 @@ unmount_mounted_volume(const MountedVolume *volume)
 }
 
 int
+unmount_mounted_volume_detach(const MountedVolume *volume)
+{
+    /* Intentionally pass NULL to umount if the caller tries
+     * to unmount a volume they already unmounted using this
+     * function.
+     */
+    int ret = umount2(volume->mount_point, MNT_DETACH);
+    if (ret == 0) {
+        free_volume_internals(volume, 1);
+        return 0;
+    }
+    return ret;
+}
+
+int
 remount_read_only(const MountedVolume* volume)
 {
     return mount(volume->device, volume->mount_point, volume->filesystem,
diff --git a/mtdutils/mounts.h b/mtdutils/mounts.h
index d721355..c8318c0 100644
--- a/mtdutils/mounts.h
+++ b/mtdutils/mounts.h
@@ -31,6 +31,7 @@ const MountedVolume *
 find_mounted_volume_by_mount_point(const char *mount_point);
 
 int unmount_mounted_volume(const MountedVolume *volume);
+int unmount_mounted_volume_detach(const MountedVolume *volume);
 
 int remount_read_only(const MountedVolume* volume);
 
-- 
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