1/* 2 libparted - a library for manipulating disk partitions 3 Copyright (C) 2001, 2007 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. 17 18 Contributor: Ben Collins <bcollins@debian.org> 19*/ 20 21#include <config.h> 22 23#include <parted/parted.h> 24#include <parted/endian.h> 25#include <parted/debug.h> 26 27#if ENABLE_NLS 28# include <libintl.h> 29# define _(String) dgettext (PACKAGE, String) 30#else 31# define _(String) (String) 32#endif /* ENABLE_NLS */ 33 34#include <unistd.h> 35#include <string.h> 36 37#define SUN_UFS_BLOCK_SIZES ((int[2]){512, 0}) 38#define HP_UFS_BLOCK_SIZES ((int[2]){512, 0}) 39 40 41/* taken from ufs_fs.h in Linux */ 42#define UFS_MAXNAMLEN 255 43#define UFS_MAXMNTLEN 512 44#define UFS_MAXCSBUFS 31 45#define UFS_LINK_MAX 32000 46 47#define UFS_MAGIC 0x00011954 48#define UFS_MAGIC_LFN 0x00095014 49#define UFS_MAGIC_FEA 0x00195612 50#define UFS_MAGIC_4GB 0x05231994 51 52struct ufs_csum { 53 uint32_t cs_ndir; /* number of directories */ 54 uint32_t cs_nbfree; /* number of free blocks */ 55 uint32_t cs_nifree; /* number of free inodes */ 56 uint32_t cs_nffree; /* number of free frags */ 57}; 58 59struct ufs_super_block { 60 uint32_t fs_link; /* UNUSED */ 61 uint32_t fs_rlink; /* UNUSED */ 62 uint32_t fs_sblkno; /* addr of super-block in filesys */ 63 uint32_t fs_cblkno; /* offset of cyl-block in filesys */ 64 uint32_t fs_iblkno; /* offset of inode-blocks in filesys */ 65 uint32_t fs_dblkno; /* offset of first data after cg */ 66 uint32_t fs_cgoffset; /* cylinder group offset in cylinder */ 67 uint32_t fs_cgmask; /* used to calc mod fs_ntrak */ 68 uint32_t fs_time; /* last time written -- time_t */ 69 uint32_t fs_size; /* number of blocks in fs */ 70 uint32_t fs_dsize; /* number of data blocks in fs */ 71 uint32_t fs_ncg; /* number of cylinder groups */ 72 uint32_t fs_bsize; /* size of basic blocks in fs */ 73 uint32_t fs_fsize; /* size of frag blocks in fs */ 74 uint32_t fs_frag; /* number of frags in a block in fs */ 75/* these are configuration parameters */ 76 uint32_t fs_minfree; /* minimum percentage of free blocks */ 77 uint32_t fs_rotdelay; /* num of ms for optimal next block */ 78 uint32_t fs_rps; /* disk revolutions per second */ 79/* these fields can be computed from the others */ 80 uint32_t fs_bmask; /* ``blkoff'' calc of blk offsets */ 81 uint32_t fs_fmask; /* ``fragoff'' calc of frag offsets */ 82 uint32_t fs_bshift; /* ``lblkno'' calc of logical blkno */ 83 uint32_t fs_fshift; /* ``numfrags'' calc number of frags */ 84/* these are configuration parameters */ 85 uint32_t fs_maxcontig; /* max number of contiguous blks */ 86 uint32_t fs_maxbpg; /* max number of blks per cyl group */ 87/* these fields can be computed from the others */ 88 uint32_t fs_fragshift; /* block to frag shift */ 89 uint32_t fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */ 90 uint32_t fs_sbsize; /* actual size of super block */ 91 uint32_t fs_csmask; /* csum block offset */ 92 uint32_t fs_csshift; /* csum block number */ 93 uint32_t fs_nindir; /* value of NINDIR */ 94 uint32_t fs_inopb; /* value of INOPB */ 95 uint32_t fs_nspf; /* value of NSPF */ 96/* yet another configuration parameter */ 97 uint32_t fs_optim; /* optimization preference, see below */ 98/* these fields are derived from the hardware */ 99 union { 100 struct { 101 uint32_t fs_npsect; /* # sectors/track including spares */ 102 } fs_sun; 103 struct { 104 int32_t fs_state; /* file system state time stamp */ 105 } fs_sunx86; 106 } fs_u1; 107 uint32_t fs_interleave; /* hardware sector interleave */ 108 uint32_t fs_trackskew; /* sector 0 skew, per track */ 109/* a unique id for this file system (currently unused and unmaintained) */ 110/* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */ 111/* Neither of those fields is used in the Tahoe code right now but */ 112/* there could be problems if they are. */ 113 uint32_t fs_id[2]; /* file system id */ 114/* sizes determined by number of cylinder groups and their sizes */ 115 uint32_t fs_csaddr; /* blk addr of cyl grp summary area */ 116 uint32_t fs_cssize; /* size of cyl grp summary area */ 117 uint32_t fs_cgsize; /* cylinder group size */ 118/* these fields are derived from the hardware */ 119 uint32_t fs_ntrak; /* tracks per cylinder */ 120 uint32_t fs_nsect; /* sectors per track */ 121 uint32_t fs_spc; /* sectors per cylinder */ 122/* this comes from the disk driver partitioning */ 123 uint32_t fs_ncyl; /* cylinders in file system */ 124/* these fields can be computed from the others */ 125 uint32_t fs_cpg; /* cylinders per group */ 126 uint32_t fs_ipg; /* inodes per group */ 127 uint32_t fs_fpg; /* blocks per group * fs_frag */ 128/* this data must be re-computed after crashes */ 129 struct ufs_csum fs_cstotal; /* cylinder summary information */ 130/* these fields are cleared at mount time */ 131 int8_t fs_fmod; /* super block modified flag */ 132 int8_t fs_clean; /* file system is clean flag */ 133 int8_t fs_ronly; /* mounted read-only flag */ 134 int8_t fs_flags; /* currently unused flag */ 135 int8_t fs_fsmnt[UFS_MAXMNTLEN]; /* name mounted on */ 136/* these fields retain the current block allocation info */ 137 uint32_t fs_cgrotor; /* last cg searched */ 138 uint32_t fs_csp[UFS_MAXCSBUFS]; /* list of fs_cs info buffers */ 139 uint32_t fs_maxcluster; 140 uint32_t fs_cpc; /* cyl per cycle in postbl */ 141 uint16_t fs_opostbl[16][8]; /* old rotation block list head */ 142 union { 143 struct { 144 int32_t fs_sparecon[53];/* reserved for future constants */ 145 int32_t fs_reclaim; 146 int32_t fs_sparecon2[1]; 147 int32_t fs_state; /* file system state time stamp */ 148 uint32_t fs_qbmask[2]; /* ~usb_bmask */ 149 uint32_t fs_qfmask[2]; /* ~usb_fmask */ 150 } fs_sun; 151 struct { 152 int32_t fs_sparecon[53];/* reserved for future constants */ 153 int32_t fs_reclaim; 154 int32_t fs_sparecon2[1]; 155 uint32_t fs_npsect; /* # sectors/track including spares */ 156 uint32_t fs_qbmask[2]; /* ~usb_bmask */ 157 uint32_t fs_qfmask[2]; /* ~usb_fmask */ 158 } fs_sunx86; 159 struct { 160 int32_t fs_sparecon[50];/* reserved for future constants */ 161 int32_t fs_contigsumsize;/* size of cluster summary array */ 162 int32_t fs_maxsymlinklen;/* max length of an internal symlink */ 163 int32_t fs_inodefmt; /* format of on-disk inodes */ 164 uint32_t fs_maxfilesize[2]; /* max representable file size */ 165 uint32_t fs_qbmask[2]; /* ~usb_bmask */ 166 uint32_t fs_qfmask[2]; /* ~usb_fmask */ 167 int32_t fs_state; /* file system state time stamp */ 168 } fs_44; 169 } fs_u2; 170 int32_t fs_postblformat; /* format of positional layout tables */ 171 int32_t fs_nrpos; /* number of rotational positions */ 172 int32_t fs_postbloff; /* (__s16) rotation block list head */ 173 int32_t fs_rotbloff; /* (uint8_t) blocks for each rotation */ 174 int32_t fs_magic; /* magic number */ 175 uint8_t fs_space[4]; /* list of blocks for each rotation */ 176}; 177 178static PedGeometry* 179ufs_probe_sun (PedGeometry* geom) 180{ 181 int8_t buf[512 * 3]; 182 struct ufs_super_block *sb; 183 184 if (geom->length < 5) 185 return 0; 186 if (!ped_geometry_read (geom, buf, 16, 3)) 187 return 0; 188 189 sb = (struct ufs_super_block *)buf; 190 191 if (PED_BE32_TO_CPU(sb->fs_magic) == UFS_MAGIC) { 192 PedSector block_size = PED_BE32_TO_CPU(sb->fs_bsize) / 512; 193 PedSector block_count = PED_BE32_TO_CPU(sb->fs_size); 194 return ped_geometry_new (geom->dev, geom->start, 195 block_size * block_count); 196 } 197 if (PED_LE32_TO_CPU(sb->fs_magic) == UFS_MAGIC) { 198 PedSector block_size = PED_LE32_TO_CPU(sb->fs_bsize) / 512; 199 PedSector block_count = PED_LE32_TO_CPU(sb->fs_size); 200 return ped_geometry_new (geom->dev, geom->start, 201 block_size * block_count); 202 } 203 return NULL; 204} 205 206static PedGeometry* 207ufs_probe_hp (PedGeometry* geom) 208{ 209 int8_t buf[1536]; 210 struct ufs_super_block *sb; 211 PedSector block_size; 212 PedSector block_count; 213 214 if (geom->length < 5) 215 return 0; 216 if (!ped_geometry_read (geom, buf, 16, 3)) 217 return 0; 218 219 sb = (struct ufs_super_block *)buf; 220 221 /* Try sane bytesex */ 222 switch (PED_BE32_TO_CPU(sb->fs_magic)) { 223 case UFS_MAGIC_LFN: 224 case UFS_MAGIC_FEA: 225 case UFS_MAGIC_4GB: 226 block_size = PED_BE32_TO_CPU(sb->fs_bsize) / 512; 227 block_count = PED_BE32_TO_CPU(sb->fs_size); 228 return ped_geometry_new (geom->dev, geom->start, 229 block_size * block_count); 230 } 231 232 /* Try perverted bytesex */ 233 switch (PED_LE32_TO_CPU(sb->fs_magic)) { 234 case UFS_MAGIC_LFN: 235 case UFS_MAGIC_FEA: 236 case UFS_MAGIC_4GB: 237 block_size = PED_LE32_TO_CPU(sb->fs_bsize) / 512; 238 block_count = PED_LE32_TO_CPU(sb->fs_size); 239 return ped_geometry_new (geom->dev, geom->start, 240 block_size * block_count); 241 } 242 return NULL; 243} 244 245#ifndef DISCOVER_ONLY 246static int 247ufs_clobber (PedGeometry* geom) 248{ 249 char buf[1536]; 250 251 if (!ped_geometry_read (geom, buf, 16, 3)) 252 return 0; 253 254 memset (buf, 0, sizeof(struct ufs_super_block)); 255 256 return ped_geometry_write (geom, buf, 16, 3); 257} 258#endif /* !DISCOVER_ONLY */ 259 260static PedFileSystemOps ufs_ops_sun = { 261 .probe = ufs_probe_sun, 262#ifndef DISCOVER_ONLY 263 .clobber = ufs_clobber, 264#else 265 .clobber = NULL, 266#endif 267 .open = NULL, 268 .create = NULL, 269 .close = NULL, 270 .check = NULL, 271 .copy = NULL, 272 .resize = NULL, 273 .get_create_constraint = NULL, 274 .get_resize_constraint = NULL, 275 .get_copy_constraint = NULL 276}; 277 278static PedFileSystemOps ufs_ops_hp = { 279 .probe = ufs_probe_hp, 280#ifndef DISCOVER_ONLY 281 .clobber = ufs_clobber, 282#else 283 .clobber = NULL, 284#endif 285 .open = NULL, 286 .create = NULL, 287 .close = NULL, 288 .check = NULL, 289 .copy = NULL, 290 .resize = NULL, 291 .get_create_constraint = NULL, 292 .get_resize_constraint = NULL, 293 .get_copy_constraint = NULL 294}; 295 296static PedFileSystemType ufs_type_sun = { 297 .next = NULL, 298 .ops = &ufs_ops_sun, 299 .name = "sun-ufs", 300 .block_sizes = SUN_UFS_BLOCK_SIZES 301}; 302 303static PedFileSystemType ufs_type_hp = { 304 .next = NULL, 305 .ops = &ufs_ops_hp, 306 .name = "hp-ufs", 307 .block_sizes = HP_UFS_BLOCK_SIZES 308}; 309 310void 311ped_file_system_ufs_init () 312{ 313 PED_ASSERT (sizeof (struct ufs_super_block) == 1380, return); 314 315 ped_file_system_type_register (&ufs_type_sun); 316 ped_file_system_type_register (&ufs_type_hp); 317} 318 319void 320ped_file_system_ufs_done () 321{ 322 ped_file_system_type_unregister (&ufs_type_hp); 323 ped_file_system_type_unregister (&ufs_type_sun); 324} 325