block/partitions/sun.c

1 // SPDX-License-Identifier: GPL-2.0
3  *  fs/partitions/sun.c
7  *  Copyright (C) 1991-1998  Linus Torvalds
8  *  Re-organised Feb 1998 Russell King
33 		    __be16 nparts;      /* Number of partitions */  in sun_partition()
57 		__be16 obs3;       /* bhead - Label head offset */  in sun_partition()
58 		__be16 obs4;       /* ppart - Physical Partition */  in sun_partition()
62 		} partitions[8];  in sun_partition()  member
73 		return -1;  in sun_partition()
75 	p = label->partitions;  in sun_partition()
76 	if (be16_to_cpu(label->magic) != SUN_LABEL_MAGIC) {  in sun_partition()
78 		       state->disk->disk_name, be16_to_cpu(label->magic)); */  in sun_partition()
83 	ush = ((__be16 *) (label+1)) - 1;  in sun_partition()
85 		csum ^= *ush--;  in sun_partition()
88 		       state->disk->disk_name);  in sun_partition()
93 	/* Check to see if we can use the VTOC table */  in sun_partition()
94 	use_vtoc = ((be32_to_cpu(label->vtoc.sanity) == SUN_VTOC_SANITY) &&  in sun_partition()
95 		    (be32_to_cpu(label->vtoc.version) == 1) &&  in sun_partition()
96 		    (be16_to_cpu(label->vtoc.nparts) <= 8));  in sun_partition()
99 	nparts = (use_vtoc) ? be16_to_cpu(label->vtoc.nparts) : 8;  in sun_partition()
102 	 * So that old Linux-Sun partitions continue to work,  in sun_partition()
105 	use_vtoc = use_vtoc || !(label->vtoc.sanity ||  in sun_partition()
106 				 label->vtoc.version || label->vtoc.nparts);  in sun_partition()
107 	spc = be16_to_cpu(label->ntrks) * be16_to_cpu(label->nsect);  in sun_partition()
112 		st_sector = be32_to_cpu(p->start_cylinder) * spc;  in sun_partition()
113 		num_sectors = be32_to_cpu(p->num_sectors);  in sun_partition()
116 			state->parts[slot].flags = 0;  in sun_partition()
118 				if (be16_to_cpu(label->vtoc.infos[i].id) == LINUX_RAID_PARTITION)  in sun_partition()
119 					state->parts[slot].flags |= ADDPART_FLAG_RAID;  in sun_partition()
120 				else if (be16_to_cpu(label->vtoc.infos[i].id) == SUN_WHOLE_DISK)  in sun_partition()
121 					state->parts[slot].flags |= ADDPART_FLAG_WHOLEDISK;  in sun_partition()
126 	strlcat(state->pp_buf, "\n", PAGE_SIZE);  in sun_partition()