zircon/system/ulib/ftl/ndm/ndm_vols.c

// Copyright 2018 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 "ndmp.h"

#include <kprivate/fsprivate.h>

// Global Function Definitions

//   ndmDelVol: Un-initialize a Blunk file system volume, or custom
//              one, for a partition entry in the partition table
//
//      Inputs: ndm = pointer to NDM control block
//              part_num = partition number
//
//     Returns: 0 on success, -1 on error
//
int ndmDelVol(CNDM ndm, ui32 part_num) {
    const NDMPartition* part;

    // Get handle to entry in partitions table. Return if error.
    part = ndmGetPartition(ndm, part_num);
    if (part == NULL)
        return -1;

    // Remove partition's FTL volume. Return status.
    return FtlNdmDelVol(part->name);

    // Return error if partition type is not handled.
    return -1;
}

//  ndmDelVols: Loop through partition table un-initializing valid
//              partitions
//
//       Input: ndm = pointer to NDM control block
//
//     Returns: 0 on success, -1 on failure
//
int ndmDelVols(CNDM ndm) {
    ui32 i, num_partitions;
    int status = 0;

    // Get the total number of partitions.
    num_partitions = ndmGetNumPartitions(ndm);

    // Loop through all partitions, un-initializing valid ones.
    for (i = 0; i < num_partitions; ++i)
        if (ndmDelVol(ndm, i))
            status = -1;

    // Return status.
    return status;
}