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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3f1b95ef81
There is no good reason to include one header per partition type in core.c. Instead move the prototypes for the detection routins to check.h, and remove all now empty headers in block/partitions/. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* fs/partitions/sysv68.c
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*
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* Copyright (C) 2007 Philippe De Muyter <phdm@macqel.be>
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*/
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#include "check.h"
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/*
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* Volume ID structure: on first 256-bytes sector of disk
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*/
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struct volumeid {
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u8 vid_unused[248];
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u8 vid_mac[8]; /* ASCII string "MOTOROLA" */
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};
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/*
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* config block: second 256-bytes sector on disk
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*/
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struct dkconfig {
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u8 ios_unused0[128];
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__be32 ios_slcblk; /* Slice table block number */
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__be16 ios_slccnt; /* Number of entries in slice table */
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u8 ios_unused1[122];
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};
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/*
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* combined volumeid and dkconfig block
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*/
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struct dkblk0 {
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struct volumeid dk_vid;
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struct dkconfig dk_ios;
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};
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/*
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* Slice Table Structure
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*/
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struct slice {
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__be32 nblocks; /* slice size (in blocks) */
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__be32 blkoff; /* block offset of slice */
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};
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int sysv68_partition(struct parsed_partitions *state)
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{
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int i, slices;
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int slot = 1;
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Sector sect;
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unsigned char *data;
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struct dkblk0 *b;
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struct slice *slice;
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char tmp[64];
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data = read_part_sector(state, 0, §);
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if (!data)
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return -1;
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b = (struct dkblk0 *)data;
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if (memcmp(b->dk_vid.vid_mac, "MOTOROLA", sizeof(b->dk_vid.vid_mac))) {
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put_dev_sector(sect);
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return 0;
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}
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slices = be16_to_cpu(b->dk_ios.ios_slccnt);
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i = be32_to_cpu(b->dk_ios.ios_slcblk);
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put_dev_sector(sect);
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data = read_part_sector(state, i, §);
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if (!data)
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return -1;
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slices -= 1; /* last slice is the whole disk */
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snprintf(tmp, sizeof(tmp), "sysV68: %s(s%u)", state->name, slices);
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strlcat(state->pp_buf, tmp, PAGE_SIZE);
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slice = (struct slice *)data;
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for (i = 0; i < slices; i++, slice++) {
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if (slot == state->limit)
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break;
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if (be32_to_cpu(slice->nblocks)) {
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put_partition(state, slot,
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be32_to_cpu(slice->blkoff),
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be32_to_cpu(slice->nblocks));
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snprintf(tmp, sizeof(tmp), "(s%u)", i);
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strlcat(state->pp_buf, tmp, PAGE_SIZE);
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}
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slot++;
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}
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strlcat(state->pp_buf, "\n", PAGE_SIZE);
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put_dev_sector(sect);
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return 1;
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}
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