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1// SPDX-License-Identifier: GPL-2.02/*3 * fs/partitions/ultrix.c4 *5 * Code extracted from drivers/block/genhd.c6 *7 * Re-organised Jul 1999 Russell King8 */9 10#include "check.h"11 12int ultrix_partition(struct parsed_partitions *state)13{14 int i;15 Sector sect;16 unsigned char *data;17 struct ultrix_disklabel {18 s32 pt_magic; /* magic no. indicating part. info exits */19 s32 pt_valid; /* set by driver if pt is current */20 struct pt_info {21 s32 pi_nblocks; /* no. of sectors */22 u32 pi_blkoff; /* block offset for start */23 } pt_part[8];24 } *label;25 26#define PT_MAGIC 0x032957 /* Partition magic number */27#define PT_VALID 1 /* Indicates if struct is valid */28 29 data = read_part_sector(state, (16384 - sizeof(*label))/512, §);30 if (!data)31 return -1;32 33 label = (struct ultrix_disklabel *)(data + 512 - sizeof(*label));34 35 if (label->pt_magic == PT_MAGIC && label->pt_valid == PT_VALID) {36 for (i=0; i<8; i++)37 if (label->pt_part[i].pi_nblocks)38 put_partition(state, i+1, 39 label->pt_part[i].pi_blkoff,40 label->pt_part[i].pi_nblocks);41 put_dev_sector(sect);42 strlcat(state->pp_buf, "\n", PAGE_SIZE);43 return 1;44 } else {45 put_dev_sector(sect);46 return 0;47 }48}49