/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef AVB_OPS_USER_H_
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#define AVB_OPS_USER_H_
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#include <libavb/libavb.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Allocates an AvbOps instance suitable for use in Android userspace
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* on the device. Returns NULL on OOM.
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*
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* The returned AvbOps has the following characteristics:
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*
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* - The read_from_partition(), write_to_partition(), and
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* get_size_of_partition() operations are implemented, however for
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* these operations to work the fstab file on the device must have a
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* /misc entry using a by-name device file scheme and the containing
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* by-name/ subdirectory must have files for other partitions.
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*
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* - The remaining operations are implemented and never fails and
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* return the following values:
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* - validate_vbmeta_public_key(): always returns |true|.
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* - read_rollback_index(): returns 0 for any roolback index.
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* - write_rollback_index(): no-op.
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* - read_is_device_unlocked(): always returns |true|.
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* - get_unique_guid_for_partition(): always returns the empty string.
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*
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* - The |ab_ops| member will point to a valid AvbABOps instance
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* implemented via libavb_ab/. This should only be used if the AVB
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* A/B stack is used on the device. This is what is used in
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* bootctrl.avb boot control implementation.
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*
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* Free with avb_ops_user_free().
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*/
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AvbOps* avb_ops_user_new(void);
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/* Frees an AvbOps instance previously allocated with avb_ops_device_new(). */
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void avb_ops_user_free(AvbOps* ops);
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#ifdef __cplusplus
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}
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#endif
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#endif /* AVB_OPS_USER_H_ */
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