1#ifndef _LINUX_GENHD_H 2#define _LINUX_GENHD_H 3 4/* 5 * genhd.h Copyright (C) 1992 Drew Eckhardt 6 * Generic hard disk header file by 7 * Drew Eckhardt 8 * 9 * <drew@colorado.edu> 10 */ 11 12#include <linux/types.h> 13 14#ifdef CONFIG_BLOCK 15 16enum { 17/* These three have identical behaviour; use the second one if DOS FDISK gets 18 confused about extended/logical partitions starting past cylinder 1023. */ 19 DOS_EXTENDED_PARTITION = 5, 20 LINUX_EXTENDED_PARTITION = 0x85, 21 WIN98_EXTENDED_PARTITION = 0x0f, 22 23 SUN_WHOLE_DISK = DOS_EXTENDED_PARTITION, 24 25 LINUX_SWAP_PARTITION = 0x82, 26 LINUX_DATA_PARTITION = 0x83, 27 LINUX_LVM_PARTITION = 0x8e, 28 LINUX_RAID_PARTITION = 0xfd, /* autodetect RAID partition */ 29 30 SOLARIS_X86_PARTITION = LINUX_SWAP_PARTITION, 31 NEW_SOLARIS_X86_PARTITION = 0xbf, 32 33 DM6_AUX1PARTITION = 0x51, /* no DDO: use xlated geom */ 34 DM6_AUX3PARTITION = 0x53, /* no DDO: use xlated geom */ 35 DM6_PARTITION = 0x54, /* has DDO: use xlated geom & offset */ 36 EZD_PARTITION = 0x55, /* EZ-DRIVE */ 37 38 FREEBSD_PARTITION = 0xa5, /* FreeBSD Partition ID */ 39 OPENBSD_PARTITION = 0xa6, /* OpenBSD Partition ID */ 40 NETBSD_PARTITION = 0xa9, /* NetBSD Partition ID */ 41 BSDI_PARTITION = 0xb7, /* BSDI Partition ID */ 42 MINIX_PARTITION = 0x81, /* Minix Partition ID */ 43 UNIXWARE_PARTITION = 0x63, /* Same as GNU_HURD and SCO Unix */ 44}; 45 46 47struct partition { 48 unsigned char boot_ind; /* 0x80 - active */ 49 unsigned char head; /* starting head */ 50 unsigned char sector; /* starting sector */ 51 unsigned char cyl; /* starting cylinder */ 52 unsigned char sys_ind; /* What partition type */ 53 unsigned char end_head; /* end head */ 54 unsigned char end_sector; /* end sector */ 55 unsigned char end_cyl; /* end cylinder */ 56 unsigned int start_sect; /* starting sector counting from 0 */ 57 unsigned int nr_sects; /* nr of sectors in partition */ 58} __attribute__((packed)); 59 60 61 62#ifdef CONFIG_SOLARIS_X86_PARTITION 63 64#define SOLARIS_X86_NUMSLICE 16 65#define SOLARIS_X86_VTOC_SANE (0x600DDEEEUL) 66 67struct solaris_x86_slice { 68 __le16 s_tag; /* ID tag of partition */ 69 __le16 s_flag; /* permission flags */ 70 __le32 s_start; /* start sector no of partition */ 71 __le32 s_size; /* # of blocks in partition */ 72}; 73 74struct solaris_x86_vtoc { 75 unsigned int v_bootinfo[3]; /* info needed by mboot (unsupported) */ 76 __le32 v_sanity; /* to verify vtoc sanity */ 77 __le32 v_version; /* layout version */ 78 char v_volume[8]; /* volume name */ 79 __le16 v_sectorsz; /* sector size in bytes */ 80 __le16 v_nparts; /* number of partitions */ 81 unsigned int v_reserved[10]; /* free space */ 82 struct solaris_x86_slice 83 v_slice[SOLARIS_X86_NUMSLICE]; /* slice headers */ 84 unsigned int timestamp[SOLARIS_X86_NUMSLICE]; /* timestamp (unsupported) */ 85 char v_asciilabel[128]; /* for compatibility */ 86}; 87 88#endif /* CONFIG_SOLARIS_X86_PARTITION */ 89 90#ifdef CONFIG_BSD_DISKLABEL 91/* 92 * BSD disklabel support by Yossi Gottlieb <yogo@math.tau.ac.il> 93 * updated by Marc Espie <Marc.Espie@openbsd.org> 94 */ 95 96/* check against BSD src/sys/sys/disklabel.h for consistency */ 97 98#define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */ 99#define BSD_MAXPARTITIONS 16 100#define OPENBSD_MAXPARTITIONS 16 101#define BSD_FS_UNUSED 0 /* disklabel unused partition entry ID */ 102struct bsd_disklabel { 103 __le32 d_magic; /* the magic number */ 104 __s16 d_type; /* drive type */ 105 __s16 d_subtype; /* controller/d_type specific */ 106 char d_typename[16]; /* type name, e.g. "eagle" */ 107 char d_packname[16]; /* pack identifier */ 108 __u32 d_secsize; /* # of bytes per sector */ 109 __u32 d_nsectors; /* # of data sectors per track */ 110 __u32 d_ntracks; /* # of tracks per cylinder */ 111 __u32 d_ncylinders; /* # of data cylinders per unit */ 112 __u32 d_secpercyl; /* # of data sectors per cylinder */ 113 __u32 d_secperunit; /* # of data sectors per unit */ 114 __u16 d_sparespertrack; /* # of spare sectors per track */ 115 __u16 d_sparespercyl; /* # of spare sectors per cylinder */ 116 __u32 d_acylinders; /* # of alt. cylinders per unit */ 117 __u16 d_rpm; /* rotational speed */ 118 __u16 d_interleave; /* hardware sector interleave */ 119 __u16 d_trackskew; /* sector 0 skew, per track */ 120 __u16 d_cylskew; /* sector 0 skew, per cylinder */ 121 __u32 d_headswitch; /* head switch time, usec */ 122 __u32 d_trkseek; /* track-to-track seek, usec */ 123 __u32 d_flags; /* generic flags */ 124#define NDDATA 5 125 __u32 d_drivedata[NDDATA]; /* drive-type specific information */ 126#define NSPARE 5 127 __u32 d_spare[NSPARE]; /* reserved for future use */ 128 __le32 d_magic2; /* the magic number (again) */ 129 __le16 d_checksum; /* xor of data incl. partitions */ 130 131 /* filesystem and partition information: */ 132 __le16 d_npartitions; /* number of partitions in following */ 133 __le32 d_bbsize; /* size of boot area at sn0, bytes */ 134 __le32 d_sbsize; /* max size of fs superblock, bytes */ 135 struct bsd_partition { /* the partition table */ 136 __le32 p_size; /* number of sectors in partition */ 137 __le32 p_offset; /* starting sector */ 138 __le32 p_fsize; /* filesystem basic fragment size */ 139 __u8 p_fstype; /* filesystem type, see below */ 140 __u8 p_frag; /* filesystem fragments per block */ 141 __le16 p_cpg; /* filesystem cylinders per group */ 142 } d_partitions[BSD_MAXPARTITIONS]; /* actually may be more */ 143}; 144 145#endif /* CONFIG_BSD_DISKLABEL */ 146 147#ifdef CONFIG_UNIXWARE_DISKLABEL 148/* 149 * Unixware slices support by Andrzej Krzysztofowicz <ankry@mif.pg.gda.pl> 150 * and Krzysztof G. Baranowski <kgb@knm.org.pl> 151 */ 152 153#define UNIXWARE_DISKMAGIC (0xCA5E600DUL) /* The disk magic number */ 154#define UNIXWARE_DISKMAGIC2 (0x600DDEEEUL) /* The slice table magic nr */ 155#define UNIXWARE_NUMSLICE 16 156#define UNIXWARE_FS_UNUSED 0 /* Unused slice entry ID */ 157 158struct unixware_slice { 159 __le16 s_label; /* label */ 160 __le16 s_flags; /* permission flags */ 161 __le32 start_sect; /* starting sector */ 162 __le32 nr_sects; /* number of sectors in slice */ 163}; 164 165struct unixware_disklabel { 166 __le32 d_type; /* drive type */ 167 __le32 d_magic; /* the magic number */ 168 __le32 d_version; /* version number */ 169 char d_serial[12]; /* serial number of the device */ 170 __le32 d_ncylinders; /* # of data cylinders per device */ 171 __le32 d_ntracks; /* # of tracks per cylinder */ 172 __le32 d_nsectors; /* # of data sectors per track */ 173 __le32 d_secsize; /* # of bytes per sector */ 174 __le32 d_part_start; /* # of first sector of this partition */ 175 __le32 d_unknown1[12]; /* ? */ 176 __le32 d_alt_tbl; /* byte offset of alternate table */ 177 __le32 d_alt_len; /* byte length of alternate table */ 178 __le32 d_phys_cyl; /* # of physical cylinders per device */ 179 __le32 d_phys_trk; /* # of physical tracks per cylinder */ 180 __le32 d_phys_sec; /* # of physical sectors per track */ 181 __le32 d_phys_bytes; /* # of physical bytes per sector */ 182 __le32 d_unknown2; /* ? */ 183 __le32 d_unknown3; /* ? */ 184 __le32 d_pad[8]; /* pad */ 185 186 struct unixware_vtoc { 187 __le32 v_magic; /* the magic number */ 188 __le32 v_version; /* version number */ 189 char v_name[8]; /* volume name */ 190 __le16 v_nslices; /* # of slices */ 191 __le16 v_unknown1; /* ? */ 192 __le32 v_reserved[10]; /* reserved */ 193 struct unixware_slice 194 v_slice[UNIXWARE_NUMSLICE]; /* slice headers */ 195 } vtoc; 196 197}; /* 408 */ 198 199#endif /* CONFIG_UNIXWARE_DISKLABEL */ 200 201#ifdef CONFIG_MINIX_SUBPARTITION 202# define MINIX_NR_SUBPARTITIONS 4 203#endif /* CONFIG_MINIX_SUBPARTITION */ 204 205 206#else /* CONFIG_BLOCK */ 207 208static __inline__ void printk_all_partitions(void) { } 209 210#endif /* CONFIG_BLOCK */ 211 212#endif 213