| /* |
| * 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 */ |
| int vd_lbn; /* logical block number */ |
| int vd_nbytes; /* file length in bytes */ |
| }; |
| |
| struct partition_table { /* one per logical partition */ |
| int pt_nblks; /* # of logical blks in partition */ |
| int pt_firstlbn; /* first lbn of partition */ |
| int pt_type; /* use of partition */ |
| }; |
| |
| struct volume_header { |
| int vh_magic; /* identifies volume header */ |
| short vh_rootpt; /* root partition number */ |
| short 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 */ |
| int vh_csum; /* volume header checksum */ |
| int 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; |
| } sgi_pt_types[] = { |
| {0x00, "SGI vh"}, |
| {0x01, "SGI trkrepl"}, |
| {0x02, "SGI secrepl"}, |
| {0x03, "SGI raw"}, |
| {0x04, "SGI bsd"}, |
| {SGI_SYSV, "SGI sysv"}, |
| {0x06, "SGI vol"}, |
| {SGI_EFS, "SGI efs"}, |
| {0x08, "SGI lv"}, |
| {0x09, "SGI rlv"}, |
| {0x0A, "SGI xfs"}, |
| {0x0B, "SGI xfslog"}, |
| {0x0C, "SGI xlv"}, |
| {0x82, "Linux swap"}, |
| {0x83, "Linux native"}, |
| {0, NULL} |
| }; |
| |
| #endif /* __EFS_VH_H__ */ |
| |