recovery: Implement a volume manager
This is a copy of the pre-binderized vold which has been converted to
use direct calls instead of sockets and stripped down to only what is
needed to support recovery.
Includes:
* recovery: volmgr: remove unused IsSupported
Change-Id: If8206658fdfb6108221806c09c99bf0a30f4a586
Signed-off-by: Jesse Chan <jc@lineageos.org>
* recovery: volmgr: remove filesystem checks
Those checks are not strictly necessary and we are
not building fsck tools for recovery for now.
Remove those checks so volmgr can be useful.
Change-Id: I87756c61b933b6cdccd281c6276b686fbd36019f
Signed-off-by: Jesse Chan <jc@lineageos.org>
* recovery: fixup `EmulatedVolume creating`
Avoid dangling pointer. Instead of pointing to FstabEntry create copy.
Change-Id: I57f76006db09a6add2c173f43175f0f6b848d87b
* recovery: fix volmgr cleaning up
Don't reset pointer to netlink manager
Delete disks in stop() rather then in ~VolumeManager
Call destroy() before deleting disks cause delete expects the
disk to be destroyed
Clear the lists or we would read garbage data on the next scan
Change-Id: Idadfa1f33b7cb5f2f3c780848a99344a6608420e
* recovery: handle interrupts in apply update menu
Change-Id: I1f78f9196634353b77986545332d7d52a5f0c161
Change-Id: Ic82d929e052b5ba70ecf7b475e0a223d77d9687e
diff --git a/volume_manager/PublicVolume.h b/volume_manager/PublicVolume.h
new file mode 100644
index 0000000..c740c34
--- /dev/null
+++ b/volume_manager/PublicVolume.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ * Copyright (C) 2019 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_VOLMGR_PUBLIC_VOLUME_H
+#define ANDROID_VOLMGR_PUBLIC_VOLUME_H
+
+#include "VolumeBase.h"
+
+#include <cutils/multiuser.h>
+
+namespace android {
+namespace volmgr {
+
+/*
+ * Shared storage provided by public (vfat) partition.
+ *
+ * Knows how to mount itself and then spawn a FUSE daemon to synthesize
+ * permissions.
+ *
+ * This volume is not inherently multi-user aware, so it has two possible
+ * modes of operation:
+ * 1. If primary storage for the device, it only binds itself to the
+ * owner user.
+ * 2. If secondary storage, it binds itself for all users, but masks
+ * away the Android directory for secondary users.
+ */
+class PublicVolume : public VolumeBase {
+ public:
+ PublicVolume(dev_t device, const std::string& nickname, const std::string& mntopts = "",
+ const std::string& fstype = "");
+ virtual ~PublicVolume();
+
+ protected:
+ status_t doCreate() override;
+ status_t doDestroy() override;
+ status_t doMount() override;
+ status_t doUnmount(bool detach = false) override;
+
+ status_t readMetadata();
+
+ private:
+ /* Kernel device representing partition */
+ dev_t mDevice;
+ /* Block device path */
+ std::string mDevPath;
+
+ /* Filesystem type */
+ std::string mFsType;
+ /* Filesystem UUID */
+ std::string mFsUuid;
+ /* Mount options */
+ std::string mMntOpts;
+
+ DISALLOW_COPY_AND_ASSIGN(PublicVolume);
+};
+
+} // namespace volmgr
+} // namespace android
+
+#endif