/* SPDX-License-Identifier: GPL-2.0 */ /* * efs_vh.h * * Copyright (c) 1999 Al Smith * * Portions derived from IRIX header files (c) 1985 MIPS Computer Systems, Inc. */ #ifndef __EFS_VH_H__ #define __EFS_VH_H__ #define VHMAGIC 0xbe5a941 /* volume header magic number */ #define NPARTAB 16 /* 16 unix partitions */ #define NVDIR 15 /* max of 15 directory entries */ #define BFNAMESIZE 16 /* max 16 chars in boot file name */ #define VDNAMESIZE 8 struct volume_directory { char vd_name[VDNAMESIZE]; /* name */ __be32 vd_lbn; /* logical block number */ __be32 vd_nbytes; /* file length in bytes */ }; struct partition_table { /* one per logical partition */ __be32 pt_nblks; /* # of logical blks in partition */ __be32 pt_firstlbn; /* first lbn of partition */ __be32 pt_type; /* use of partition */ }; struct volume_header { __be32 vh_magic; /* identifies volume header */ __be16 vh_rootpt; /* root partition number */ __be16 vh_swappt; /* swap partition number */ char vh_bootfile[BFNAMESIZE]; /* name of file to boot */ char pad[48]; /* device param space */ struct volume_directory vh_vd[NVDIR]; /* other vol hdr contents */ struct partition_table vh_pt[NPARTAB]; /* device partition layout */ __be32 vh_csum; /* volume header checksum */ __be32 vh_fill; /* fill out to 512 bytes */ }; /* partition type sysv is used for EFS format CD-ROM partitions */ #define SGI_SYSV 0x05 #define SGI_EFS 0x07 #define IS_EFS(x) (((x) == SGI_EFS) || ((x) == SGI_SYSV)) struct pt_types { int pt_type; char *pt_name; }; #endif /* __EFS_VH_H__ */