| // Copyright 2017 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <stdlib.h> |
| |
| #ifdef __Fuchsia__ |
| #include <fbl/algorithm.h> |
| #include <fuchsia/hardware/block/volume/c/fidl.h> |
| #include <lib/fzl/fdio.h> |
| #include <zircon/device/block.h> |
| #endif |
| |
| namespace fvm { |
| |
| #ifdef __Fuchsia__ |
| |
| zx_status_t ResetAllSlices(int fd) { |
| fzl::UnownedFdioCaller partition_caller(fd); |
| zx::unowned_channel partition_channel(partition_caller.borrow_channel()); |
| uint64_t vslice_start[1]; |
| vslice_start[0] = 1; |
| |
| while (true) { |
| fuchsia_hardware_block_volume_VsliceRange |
| ranges[fuchsia_hardware_block_volume_MAX_SLICE_REQUESTS]; |
| size_t actual_ranges_count; |
| zx_status_t io_status, status; |
| io_status = fuchsia_hardware_block_volume_VolumeQuerySlices( |
| partition_channel->get(), vslice_start, fbl::count_of(vslice_start), &status, |
| ranges, &actual_ranges_count); |
| if (io_status != ZX_OK) { |
| return io_status; |
| } |
| if (status == ZX_ERR_OUT_OF_RANGE) { |
| return ZX_OK; |
| } |
| if (status != ZX_OK) { |
| return status; |
| } |
| if (actual_ranges_count != 1 || ranges[0].count == 0) { |
| return ZX_ERR_IO; |
| } |
| |
| // Free any slices that were allocated |
| if (ranges[0].allocated) { |
| io_status = fuchsia_hardware_block_volume_VolumeShrink(partition_channel->get(), |
| vslice_start[0], ranges[0].count, |
| &status); |
| if (io_status != ZX_OK) { |
| return io_status; |
| } |
| if (status != ZX_OK) { |
| return status; |
| } |
| } |
| |
| // Move to the next portion of the block address space |
| vslice_start[0] += ranges[0].count; |
| } |
| } |
| |
| #endif |
| |
| } // namespace fvm |
