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Diffstat (limited to 'libparted/fs/ufs/ufs.c')
| -rw-r--r-- | libparted/fs/ufs/ufs.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/libparted/fs/ufs/ufs.c b/libparted/fs/ufs/ufs.c new file mode 100644 index 0000000..d2bf421 --- /dev/null +++ b/libparted/fs/ufs/ufs.c @@ -0,0 +1,281 @@ +/* + libparted - a library for manipulating disk partitions + Copyright (C) 2001, 2007, 2009-2014, 2019-2023 Free Software Foundation, + Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + + Contributor: Ben Collins <bcollins@debian.org> +*/ + +#include <config.h> + +#include <parted/parted.h> +#include <parted/endian.h> +#include <parted/debug.h> + +#if ENABLE_NLS +# include <libintl.h> +# define _(String) dgettext (PACKAGE, String) +#else +# define _(String) (String) +#endif /* ENABLE_NLS */ + +#include <unistd.h> +#include <string.h> + +/* taken from ufs_fs.h in Linux */ +#define UFS_MAXNAMLEN 255 +#define UFS_MAXMNTLEN 512 +#define UFS_MAXCSBUFS 31 +#define UFS_LINK_MAX 32000 + +#define UFS_MAGIC 0x00011954 +#define UFS_MAGIC_LFN 0x00095014 +#define UFS_MAGIC_FEA 0x00195612 +#define UFS_MAGIC_4GB 0x05231994 + +struct __attribute__ ((packed)) ufs_csum { + uint32_t cs_ndir; /* number of directories */ + uint32_t cs_nbfree; /* number of free blocks */ + uint32_t cs_nifree; /* number of free inodes */ + uint32_t cs_nffree; /* number of free frags */ +}; + +struct __attribute__ ((packed)) ufs_super_block { + uint32_t fs_link; /* UNUSED */ + uint32_t fs_rlink; /* UNUSED */ + uint32_t fs_sblkno; /* addr of super-block in filesys */ + uint32_t fs_cblkno; /* offset of cyl-block in filesys */ + uint32_t fs_iblkno; /* offset of inode-blocks in filesys */ + uint32_t fs_dblkno; /* offset of first data after cg */ + uint32_t fs_cgoffset; /* cylinder group offset in cylinder */ + uint32_t fs_cgmask; /* used to calc mod fs_ntrak */ + uint32_t fs_time; /* last time written -- time_t */ + uint32_t fs_size; /* number of blocks in fs */ + uint32_t fs_dsize; /* number of data blocks in fs */ + uint32_t fs_ncg; /* number of cylinder groups */ + uint32_t fs_bsize; /* size of basic blocks in fs */ + uint32_t fs_fsize; /* size of frag blocks in fs */ + uint32_t fs_frag; /* number of frags in a block in fs */ +/* these are configuration parameters */ + uint32_t fs_minfree; /* minimum percentage of free blocks */ + uint32_t fs_rotdelay; /* num of ms for optimal next block */ + uint32_t fs_rps; /* disk revolutions per second */ +/* these fields can be computed from the others */ + uint32_t fs_bmask; /* ``blkoff'' calc of blk offsets */ + uint32_t fs_fmask; /* ``fragoff'' calc of frag offsets */ + uint32_t fs_bshift; /* ``lblkno'' calc of logical blkno */ + uint32_t fs_fshift; /* ``numfrags'' calc number of frags */ +/* these are configuration parameters */ + uint32_t fs_maxcontig; /* max number of contiguous blks */ + uint32_t fs_maxbpg; /* max number of blks per cyl group */ +/* these fields can be computed from the others */ + uint32_t fs_fragshift; /* block to frag shift */ + uint32_t fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */ + uint32_t fs_sbsize; /* actual size of super block */ + uint32_t fs_csmask; /* csum block offset */ + uint32_t fs_csshift; /* csum block number */ + uint32_t fs_nindir; /* value of NINDIR */ + uint32_t fs_inopb; /* value of INOPB */ + uint32_t fs_nspf; /* value of NSPF */ +/* yet another configuration parameter */ + uint32_t fs_optim; /* optimization preference, see below */ +/* these fields are derived from the hardware */ + union { + struct { + uint32_t fs_npsect; /* # sectors/track including spares */ + } fs_sun; + struct { + int32_t fs_state; /* file system state timestamp */ + } fs_sunx86; + } fs_u1; + uint32_t fs_interleave; /* hardware sector interleave */ + uint32_t fs_trackskew; /* sector 0 skew, per track */ +/* a unique id for this file system (currently unused and unmaintained) */ +/* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */ +/* Neither of those fields is used in the Tahoe code right now but */ +/* there could be problems if they are. */ + uint32_t fs_id[2]; /* file system id */ +/* sizes determined by number of cylinder groups and their sizes */ + uint32_t fs_csaddr; /* blk addr of cyl grp summary area */ + uint32_t fs_cssize; /* size of cyl grp summary area */ + uint32_t fs_cgsize; /* cylinder group size */ +/* these fields are derived from the hardware */ + uint32_t fs_ntrak; /* tracks per cylinder */ + uint32_t fs_nsect; /* sectors per track */ + uint32_t fs_spc; /* sectors per cylinder */ +/* this comes from the disk driver partitioning */ + uint32_t fs_ncyl; /* cylinders in file system */ +/* these fields can be computed from the others */ + uint32_t fs_cpg; /* cylinders per group */ + uint32_t fs_ipg; /* inodes per group */ + uint32_t fs_fpg; /* blocks per group * fs_frag */ +/* this data must be re-computed after crashes */ + struct ufs_csum fs_cstotal; /* cylinder summary information */ +/* these fields are cleared at mount time */ + int8_t fs_fmod; /* super block modified flag */ + int8_t fs_clean; /* file system is clean flag */ + int8_t fs_ronly; /* mounted read-only flag */ + int8_t fs_flags; /* currently unused flag */ + int8_t fs_fsmnt[UFS_MAXMNTLEN]; /* name mounted on */ +/* these fields retain the current block allocation info */ + uint32_t fs_cgrotor; /* last cg searched */ + uint32_t fs_csp[UFS_MAXCSBUFS]; /* list of fs_cs info buffers */ + uint32_t fs_maxcluster; + uint32_t fs_cpc; /* cyl per cycle in postbl */ + uint16_t fs_opostbl[16][8]; /* old rotation block list head */ + union { + struct { + int32_t fs_sparecon[53];/* reserved for future constants */ + int32_t fs_reclaim; + int32_t fs_sparecon2[1]; + int32_t fs_state; /* file system state timestamp */ + uint32_t fs_qbmask[2]; /* ~usb_bmask */ + uint32_t fs_qfmask[2]; /* ~usb_fmask */ + } fs_sun; + struct { + int32_t fs_sparecon[53];/* reserved for future constants */ + int32_t fs_reclaim; + int32_t fs_sparecon2[1]; + uint32_t fs_npsect; /* # sectors/track including spares */ + uint32_t fs_qbmask[2]; /* ~usb_bmask */ + uint32_t fs_qfmask[2]; /* ~usb_fmask */ + } fs_sunx86; + struct { + int32_t fs_sparecon[50];/* reserved for future constants */ + int32_t fs_contigsumsize;/* size of cluster summary array */ + int32_t fs_maxsymlinklen;/* max length of an internal symlink */ + int32_t fs_inodefmt; /* format of on-disk inodes */ + uint32_t fs_maxfilesize[2]; /* max representable file size */ + uint32_t fs_qbmask[2]; /* ~usb_bmask */ + uint32_t fs_qfmask[2]; /* ~usb_fmask */ + int32_t fs_state; /* file system state timestamp */ + } fs_44; + } fs_u2; + int32_t fs_postblformat; /* format of positional layout tables */ + int32_t fs_nrpos; /* number of rotational positions */ + int32_t fs_postbloff; /* (__s16) rotation block list head */ + int32_t fs_rotbloff; /* (uint8_t) blocks for each rotation */ + int32_t fs_magic; /* magic number */ + uint8_t fs_space[4]; /* list of blocks for each rotation */ +}; + +static PedGeometry* +ufs_probe_sun (PedGeometry* geom) +{ + const int sectors = ((3 * 512) + geom->dev->sector_size - 1) / + geom->dev->sector_size; + uint8_t* buf = alloca (sectors * geom->dev->sector_size); + struct ufs_super_block *sb; + + if (geom->length < 5) + return 0; + if (!ped_geometry_read (geom, buf, 16 * 512 / geom->dev->sector_size, sectors)) + return 0; + + sb = (struct ufs_super_block *)buf; + + if (PED_BE32_TO_CPU(sb->fs_magic) == UFS_MAGIC) { + PedSector block_size = PED_BE32_TO_CPU(sb->fs_bsize) / geom->dev->sector_size; + PedSector block_count = PED_BE32_TO_CPU(sb->fs_size); + return ped_geometry_new (geom->dev, geom->start, + block_size * block_count); + } + if (PED_LE32_TO_CPU(sb->fs_magic) == UFS_MAGIC) { + PedSector block_size = PED_LE32_TO_CPU(sb->fs_bsize) / geom->dev->sector_size; + PedSector block_count = PED_LE32_TO_CPU(sb->fs_size); + return ped_geometry_new (geom->dev, geom->start, + block_size * block_count); + } + return NULL; +} + +static PedGeometry* +ufs_probe_hp (PedGeometry* geom) +{ + struct ufs_super_block *sb; + PedSector block_size; + PedSector block_count; + + if (geom->length < 5) + return 0; + const int sectors = ((3 * 512) + geom->dev->sector_size - 1) / + geom->dev->sector_size; + uint8_t* buf = alloca (sectors * geom->dev->sector_size); + + if (!ped_geometry_read (geom, buf, 16 * 512 / geom->dev->sector_size, sectors)) + return 0; + + sb = (struct ufs_super_block *)buf; + + /* Try sane bytesex */ + switch (PED_BE32_TO_CPU(sb->fs_magic)) { + case UFS_MAGIC_LFN: + case UFS_MAGIC_FEA: + case UFS_MAGIC_4GB: + block_size = PED_BE32_TO_CPU(sb->fs_bsize) / geom->dev->sector_size; + block_count = PED_BE32_TO_CPU(sb->fs_size); + return ped_geometry_new (geom->dev, geom->start, + block_size * block_count); + } + + /* Try perverted bytesex */ + switch (PED_LE32_TO_CPU(sb->fs_magic)) { + case UFS_MAGIC_LFN: + case UFS_MAGIC_FEA: + case UFS_MAGIC_4GB: + block_size = PED_LE32_TO_CPU(sb->fs_bsize) / geom->dev->sector_size; + block_count = PED_LE32_TO_CPU(sb->fs_size); + return ped_geometry_new (geom->dev, geom->start, + block_size * block_count); + } + return NULL; +} + +static PedFileSystemOps ufs_ops_sun = { + probe: ufs_probe_sun, +}; + +static PedFileSystemOps ufs_ops_hp = { + probe: ufs_probe_hp, +}; + +static PedFileSystemType ufs_type_sun = { + next: NULL, + ops: &ufs_ops_sun, + name: "sun-ufs", +}; + +static PedFileSystemType ufs_type_hp = { + next: NULL, + ops: &ufs_ops_hp, + name: "hp-ufs", +}; + +void +ped_file_system_ufs_init () +{ + PED_ASSERT (sizeof (struct ufs_super_block) == 1380); + + ped_file_system_type_register (&ufs_type_sun); + ped_file_system_type_register (&ufs_type_hp); +} + +void +ped_file_system_ufs_done () +{ + ped_file_system_type_unregister (&ufs_type_hp); + ped_file_system_type_unregister (&ufs_type_sun); +} |