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Block devices with removable media (e.g. SD card readers) indicate a missing medium with a zero size. Optionally ignore such block devices that carry no medium currently.
31 lines
1.3 KiB
C
31 lines
1.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "forward.h"
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typedef enum BlockDevListFlags {
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BLOCKDEV_LIST_SHOW_SYMLINKS = 1 << 0, /* Pick up symlinks to block devices too */
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BLOCKDEV_LIST_REQUIRE_PARTITION_SCANNING = 1 << 1, /* Only consider block devices with partition scanning */
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BLOCKDEV_LIST_IGNORE_ZRAM = 1 << 2, /* Ignore ZRAM */
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BLOCKDEV_LIST_REQUIRE_LUKS = 1 << 3, /* Only consider block devices with LUKS superblocks */
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BLOCKDEV_LIST_IGNORE_ROOT = 1 << 4, /* Ignore the block device we are currently booted from */
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BLOCKDEV_LIST_IGNORE_EMPTY = 1 << 5, /* Ignore disks of zero size (usually drives without a medium) */
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} BlockDevListFlags;
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typedef struct BlockDevice {
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char *node;
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char **symlinks;
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uint64_t diskseq;
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uint64_t size; /* in bytes */
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} BlockDevice;
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#define BLOCK_DEVICE_NULL (BlockDevice) { \
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.diskseq = UINT64_MAX, \
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.size = UINT64_MAX, \
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}
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void block_device_done(BlockDevice *d);
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void block_device_array_free(BlockDevice *d, size_t n_devices);
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int blockdev_list(BlockDevListFlags flags, BlockDevice **ret_devices, size_t *ret_n_devices);
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