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freevxfs: handle big endian HP-UX file systems

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To support VxFS filesystems from HP-UX on x86 systems we need to
implement byte swapping, and to keep support for Unixware filesystems
it needs to be the complicated dual-endian kind ala sysvfs.

To do this properly we have to split the on disk and in-core inode
so that we can keep the in-core one in native endianness.  All other
structures are byteswapped on demand.

Signed-off-by: Krzysztof Błaszkowski <kb@sysmikro.com.pl>
[hch: make spare happy]
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Krzysztof Błaszkowski 2016-05-31 08:45:13 +02:00 committed by Christoph Hellwig
parent 6b15d6650c
commit 0d83f7fc83
11 changed files with 405 additions and 277 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

177
fs/freevxfs/vxfs.h
View File

@ -38,13 +38,6 @@
*/ */
#include <linux/types.h> #include <linux/types.h>
/*
* Data types for use with the VxFS ondisk format.
*/
typedef int32_t vx_daddr_t;
typedef int32_t vx_ino_t;
/* /*
* Superblock magic number (vxfs_super->vs_magic). * Superblock magic number (vxfs_super->vs_magic).
*/ */
@ -60,6 +53,14 @@ typedef int32_t vx_ino_t;
*/ */
#define VXFS_NEFREE 32 #define VXFS_NEFREE 32
enum vxfs_byte_order {
VXFS_BO_LE,
VXFS_BO_BE,
};
typedef __u16 __bitwise __fs16;
typedef __u32 __bitwise __fs32;
typedef __u64 __bitwise __fs64;
/* /*
* VxFS superblock (disk). * VxFS superblock (disk).
@ -71,83 +72,83 @@ struct vxfs_sb {
* Lots of this fields are no more used by version 2 * Lots of this fields are no more used by version 2
* and never filesystems. * and never filesystems.
*/ */
u_int32_t vs_magic; /* Magic number */ __fs32 vs_magic; /* Magic number */
int32_t vs_version; /* VxFS version */ __fs32 vs_version; /* VxFS version */
u_int32_t vs_ctime; /* create time - secs */ __fs32 vs_ctime; /* create time - secs */
u_int32_t vs_cutime; /* create time - usecs */ __fs32 vs_cutime; /* create time - usecs */
int32_t __unused1; /* unused */ __fs32 __unused1; /* unused */
int32_t __unused2; /* unused */ __fs32 __unused2; /* unused */
vx_daddr_t vs_old_logstart; /* obsolete */ __fs32 vs_old_logstart; /* obsolete */
vx_daddr_t vs_old_logend; /* obsolete */ __fs32 vs_old_logend; /* obsolete */
int32_t vs_bsize; /* block size */ __fs32 vs_bsize; /* block size */
int32_t vs_size; /* number of blocks */ __fs32 vs_size; /* number of blocks */
int32_t vs_dsize; /* number of data blocks */ __fs32 vs_dsize; /* number of data blocks */
u_int32_t vs_old_ninode; /* obsolete */ __fs32 vs_old_ninode; /* obsolete */
int32_t vs_old_nau; /* obsolete */ __fs32 vs_old_nau; /* obsolete */
int32_t __unused3; /* unused */ __fs32 __unused3; /* unused */
int32_t vs_old_defiextsize; /* obsolete */ __fs32 vs_old_defiextsize; /* obsolete */
int32_t vs_old_ilbsize; /* obsolete */ __fs32 vs_old_ilbsize; /* obsolete */
int32_t vs_immedlen; /* size of immediate data area */ __fs32 vs_immedlen; /* size of immediate data area */
int32_t vs_ndaddr; /* number of direct extentes */ __fs32 vs_ndaddr; /* number of direct extentes */
vx_daddr_t vs_firstau; /* address of first AU */ __fs32 vs_firstau; /* address of first AU */
vx_daddr_t vs_emap; /* offset of extent map in AU */ __fs32 vs_emap; /* offset of extent map in AU */
vx_daddr_t vs_imap; /* offset of inode map in AU */ __fs32 vs_imap; /* offset of inode map in AU */
vx_daddr_t vs_iextop; /* offset of ExtOp. map in AU */ __fs32 vs_iextop; /* offset of ExtOp. map in AU */
vx_daddr_t vs_istart; /* offset of inode list in AU */ __fs32 vs_istart; /* offset of inode list in AU */
vx_daddr_t vs_bstart; /* offset of fdblock in AU */ __fs32 vs_bstart; /* offset of fdblock in AU */
vx_daddr_t vs_femap; /* aufirst + emap */ __fs32 vs_femap; /* aufirst + emap */
vx_daddr_t vs_fimap; /* aufirst + imap */ __fs32 vs_fimap; /* aufirst + imap */
vx_daddr_t vs_fiextop; /* aufirst + iextop */ __fs32 vs_fiextop; /* aufirst + iextop */
vx_daddr_t vs_fistart; /* aufirst + istart */ __fs32 vs_fistart; /* aufirst + istart */
vx_daddr_t vs_fbstart; /* aufirst + bstart */ __fs32 vs_fbstart; /* aufirst + bstart */
int32_t vs_nindir; /* number of entries in indir */ __fs32 vs_nindir; /* number of entries in indir */
int32_t vs_aulen; /* length of AU in blocks */ __fs32 vs_aulen; /* length of AU in blocks */
int32_t vs_auimlen; /* length of imap in blocks */ __fs32 vs_auimlen; /* length of imap in blocks */
int32_t vs_auemlen; /* length of emap in blocks */ __fs32 vs_auemlen; /* length of emap in blocks */
int32_t vs_auilen; /* length of ilist in blocks */ __fs32 vs_auilen; /* length of ilist in blocks */
int32_t vs_aupad; /* length of pad in blocks */ __fs32 vs_aupad; /* length of pad in blocks */
int32_t vs_aublocks; /* data blocks in AU */ __fs32 vs_aublocks; /* data blocks in AU */
int32_t vs_maxtier; /* log base 2 of aublocks */ __fs32 vs_maxtier; /* log base 2 of aublocks */
int32_t vs_inopb; /* number of inodes per blk */ __fs32 vs_inopb; /* number of inodes per blk */
int32_t vs_old_inopau; /* obsolete */ __fs32 vs_old_inopau; /* obsolete */
int32_t vs_old_inopilb; /* obsolete */ __fs32 vs_old_inopilb; /* obsolete */
int32_t vs_old_ndiripau; /* obsolete */ __fs32 vs_old_ndiripau; /* obsolete */
int32_t vs_iaddrlen; /* size of indirect addr ext. */ __fs32 vs_iaddrlen; /* size of indirect addr ext. */
int32_t vs_bshift; /* log base 2 of bsize */ __fs32 vs_bshift; /* log base 2 of bsize */
int32_t vs_inoshift; /* log base 2 of inobp */ __fs32 vs_inoshift; /* log base 2 of inobp */
int32_t vs_bmask; /* ~( bsize - 1 ) */ __fs32 vs_bmask; /* ~( bsize - 1 ) */
int32_t vs_boffmask; /* bsize - 1 */ __fs32 vs_boffmask; /* bsize - 1 */
int32_t vs_old_inomask; /* old_inopilb - 1 */ __fs32 vs_old_inomask; /* old_inopilb - 1 */
int32_t vs_checksum; /* checksum of V1 data */ __fs32 vs_checksum; /* checksum of V1 data */
/* /*
* Version 1, writable * Version 1, writable
*/ */
int32_t vs_free; /* number of free blocks */ __fs32 vs_free; /* number of free blocks */
int32_t vs_ifree; /* number of free inodes */ __fs32 vs_ifree; /* number of free inodes */
int32_t vs_efree[VXFS_NEFREE]; /* number of free extents by size */ __fs32 vs_efree[VXFS_NEFREE]; /* number of free extents by size */
int32_t vs_flags; /* flags ?!? */ __fs32 vs_flags; /* flags ?!? */
u_int8_t vs_mod; /* filesystem has been changed */ __u8 vs_mod; /* filesystem has been changed */
u_int8_t vs_clean; /* clean FS */ __u8 vs_clean; /* clean FS */
u_int16_t __unused4; /* unused */ __fs16 __unused4; /* unused */
u_int32_t vs_firstlogid; /* mount time log ID */ __fs32 vs_firstlogid; /* mount time log ID */
u_int32_t vs_wtime; /* last time written - sec */ __fs32 vs_wtime; /* last time written - sec */
u_int32_t vs_wutime; /* last time written - usec */ __fs32 vs_wutime; /* last time written - usec */
u_int8_t vs_fname[6]; /* FS name */ __u8 vs_fname[6]; /* FS name */
u_int8_t vs_fpack[6]; /* FS pack name */ __u8 vs_fpack[6]; /* FS pack name */
int32_t vs_logversion; /* log format version */ __fs32 vs_logversion; /* log format version */
int32_t __unused5; /* unused */ __u32 __unused5; /* unused */
/* /*
* Version 2, Read-only * Version 2, Read-only
*/ */
vx_daddr_t vs_oltext[2]; /* OLT extent and replica */ __fs32 vs_oltext[2]; /* OLT extent and replica */
int32_t vs_oltsize; /* OLT extent size */ __fs32 vs_oltsize; /* OLT extent size */
int32_t vs_iauimlen; /* size of inode map */ __fs32 vs_iauimlen; /* size of inode map */
int32_t vs_iausize; /* size of IAU in blocks */ __fs32 vs_iausize; /* size of IAU in blocks */
int32_t vs_dinosize; /* size of inode in bytes */ __fs32 vs_dinosize; /* size of inode in bytes */
int32_t vs_old_dniaddr; /* indir levels per inode */ __fs32 vs_old_dniaddr; /* indir levels per inode */
int32_t vs_checksum2; /* checksum of V2 RO */ __fs32 vs_checksum2; /* checksum of V2 RO */
/* /*
* Actually much more... * Actually much more...
@ -168,8 +169,32 @@ struct vxfs_sb_info {
ino_t vsi_fshino; /* fileset header inode */ ino_t vsi_fshino; /* fileset header inode */
daddr_t vsi_oltext; /* OLT extent */ daddr_t vsi_oltext; /* OLT extent */
daddr_t vsi_oltsize; /* OLT size */ daddr_t vsi_oltsize; /* OLT size */
enum vxfs_byte_order byte_order;
}; };
static inline u16 fs16_to_cpu(struct vxfs_sb_info *sbi, __fs16 a)
{
if (sbi->byte_order == VXFS_BO_BE)
return be16_to_cpu((__force __be16)a);
else
return le16_to_cpu((__force __le16)a);
}
static inline u32 fs32_to_cpu(struct vxfs_sb_info *sbi, __fs32 a)
{
if (sbi->byte_order == VXFS_BO_BE)
return be32_to_cpu((__force __be32)a);
else
return le32_to_cpu((__force __le32)a);
}
static inline u64 fs64_to_cpu(struct vxfs_sb_info *sbi, __fs64 a)
{
if (sbi->byte_order == VXFS_BO_BE)
return be64_to_cpu((__force __be64)a);
else
return le64_to_cpu((__force __le64)a);
}
/* /*
* File modes. File types above 0xf000 are vxfs internal only, they should * File modes. File types above 0xf000 are vxfs internal only, they should

70
fs/freevxfs/vxfs_bmap.c
View File

@ -68,8 +68,9 @@ vxfs_bmap_ext4(struct inode *ip, long bn)
{ {
struct super_block *sb = ip->i_sb; struct super_block *sb = ip->i_sb;
struct vxfs_inode_info *vip = VXFS_INO(ip); struct vxfs_inode_info *vip = VXFS_INO(ip);
struct vxfs_sb_info *sbi = VXFS_SBI(sb);
unsigned long bsize = sb->s_blocksize; unsigned long bsize = sb->s_blocksize;
u32 indsize = vip->vii_ext4.ve4_indsize; u32 indsize = fs32_to_cpu(sbi, vip->vii_ext4.ve4_indsize);
int i; int i;
if (indsize > sb->s_blocksize) if (indsize > sb->s_blocksize)
@ -77,22 +78,24 @@ vxfs_bmap_ext4(struct inode *ip, long bn)
for (i = 0; i < VXFS_NDADDR; i++) { for (i = 0; i < VXFS_NDADDR; i++) {
struct direct *d = vip->vii_ext4.ve4_direct + i; struct direct *d = vip->vii_ext4.ve4_direct + i;
if (bn >= 0 && bn < d->size) if (bn >= 0 && bn < fs32_to_cpu(sbi, d->size))
return (bn + d->extent); return (bn + fs32_to_cpu(sbi, d->extent));
bn -= d->size; bn -= fs32_to_cpu(sbi, d->size);
} }
if ((bn / (indsize * indsize * bsize / 4)) == 0) { if ((bn / (indsize * indsize * bsize / 4)) == 0) {
struct buffer_head *buf; struct buffer_head *buf;
daddr_t bno; daddr_t bno;
u32 *indir; __fs32 *indir;
buf = sb_bread(sb, vip->vii_ext4.ve4_indir[0]); buf = sb_bread(sb,
fs32_to_cpu(sbi, vip->vii_ext4.ve4_indir[0]));
if (!buf || !buffer_mapped(buf)) if (!buf || !buffer_mapped(buf))
goto fail_buf; goto fail_buf;
indir = (u32 *)buf->b_data; indir = (__fs32 *)buf->b_data;
bno = indir[(bn/indsize) % (indsize*bn)] + (bn%indsize); bno = fs32_to_cpu(sbi, indir[(bn / indsize) % (indsize * bn)]) +
(bn % indsize);
brelse(buf); brelse(buf);
return bno; return bno;
@ -127,6 +130,7 @@ vxfs_bmap_ext4(struct inode *ip, long bn)
static daddr_t static daddr_t
vxfs_bmap_indir(struct inode *ip, long indir, int size, long block) vxfs_bmap_indir(struct inode *ip, long indir, int size, long block)
{ {
struct vxfs_sb_info *sbi = VXFS_SBI(ip->i_sb);
struct buffer_head *bp = NULL; struct buffer_head *bp = NULL;
daddr_t pblock = 0; daddr_t pblock = 0;
int i; int i;
@ -142,24 +146,27 @@ vxfs_bmap_indir(struct inode *ip, long indir, int size, long block)
typ = ((struct vxfs_typed *)bp->b_data) + typ = ((struct vxfs_typed *)bp->b_data) +
(i % VXFS_TYPED_PER_BLOCK(ip->i_sb)); (i % VXFS_TYPED_PER_BLOCK(ip->i_sb));
off = (typ->vt_hdr & VXFS_TYPED_OFFSETMASK); off = fs64_to_cpu(sbi, typ->vt_hdr) & VXFS_TYPED_OFFSETMASK;
if (block < off) { if (block < off) {
brelse(bp); brelse(bp);
continue; continue;
} }
switch ((u_int32_t)(typ->vt_hdr >> VXFS_TYPED_TYPESHIFT)) { switch ((u_int32_t)(fs64_to_cpu(sbi, typ->vt_hdr) >>
VXFS_TYPED_TYPESHIFT)) {
case VXFS_TYPED_INDIRECT: case VXFS_TYPED_INDIRECT:
pblock = vxfs_bmap_indir(ip, typ->vt_block, pblock = vxfs_bmap_indir(ip,
typ->vt_size, block - off); fs32_to_cpu(sbi, typ->vt_block),
fs32_to_cpu(sbi, typ->vt_size),
block - off);
if (pblock == -2) if (pblock == -2)
break; break;
goto out; goto out;
case VXFS_TYPED_DATA: case VXFS_TYPED_DATA:
if ((block - off) >= typ->vt_size) if ((block - off) >= fs32_to_cpu(sbi, typ->vt_size))
break; break;
pblock = (typ->vt_block + block - off); pblock = fs32_to_cpu(sbi, typ->vt_block) + block - off;
goto out; goto out;
case VXFS_TYPED_INDIRECT_DEV4: case VXFS_TYPED_INDIRECT_DEV4:
case VXFS_TYPED_DATA_DEV4: { case VXFS_TYPED_DATA_DEV4: {
@ -167,13 +174,15 @@ vxfs_bmap_indir(struct inode *ip, long indir, int size, long block)
(struct vxfs_typed_dev4 *)typ; (struct vxfs_typed_dev4 *)typ;
printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n"); printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n");
printk(KERN_INFO "block: %Lu\tsize: %Ld\tdev: %d\n", printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n",
(unsigned long long) typ4->vd4_block, fs64_to_cpu(sbi, typ4->vd4_block),
(unsigned long long) typ4->vd4_size, fs64_to_cpu(sbi, typ4->vd4_size),
typ4->vd4_dev); fs32_to_cpu(sbi, typ4->vd4_dev));
goto fail; goto fail;
} }
default: default:
printk(KERN_ERR "%s:%d vt_hdr %llu\n", __func__,
__LINE__, fs64_to_cpu(sbi, typ->vt_hdr));
BUG(); BUG();
} }
brelse(bp); brelse(bp);
@ -201,28 +210,33 @@ static daddr_t
vxfs_bmap_typed(struct inode *ip, long iblock) vxfs_bmap_typed(struct inode *ip, long iblock)
{ {
struct vxfs_inode_info *vip = VXFS_INO(ip); struct vxfs_inode_info *vip = VXFS_INO(ip);
struct vxfs_sb_info *sbi = VXFS_SBI(ip->i_sb);
daddr_t pblock = 0; daddr_t pblock = 0;
int i; int i;
for (i = 0; i < VXFS_NTYPED; i++) { for (i = 0; i < VXFS_NTYPED; i++) {
struct vxfs_typed *typ = vip->vii_org.typed + i; struct vxfs_typed *typ = vip->vii_org.typed + i;
int64_t off = (typ->vt_hdr & VXFS_TYPED_OFFSETMASK); u64 hdr = fs64_to_cpu(sbi, typ->vt_hdr);
int64_t off = (hdr & VXFS_TYPED_OFFSETMASK);
#ifdef DIAGNOSTIC #ifdef DIAGNOSTIC
vxfs_typdump(typ); vxfs_typdump(typ);
#endif #endif
if (iblock < off) if (iblock < off)
continue; continue;
switch ((u_int32_t)(typ->vt_hdr >> VXFS_TYPED_TYPESHIFT)) { switch ((u32)(hdr >> VXFS_TYPED_TYPESHIFT)) {
case VXFS_TYPED_INDIRECT: case VXFS_TYPED_INDIRECT:
pblock = vxfs_bmap_indir(ip, typ->vt_block, pblock = vxfs_bmap_indir(ip,
typ->vt_size, iblock - off); fs32_to_cpu(sbi, typ->vt_block),
fs32_to_cpu(sbi, typ->vt_size),
iblock - off);
if (pblock == -2) if (pblock == -2)
break; break;
return (pblock); return (pblock);
case VXFS_TYPED_DATA: case VXFS_TYPED_DATA:
if ((iblock - off) < typ->vt_size) if ((iblock - off) < fs32_to_cpu(sbi, typ->vt_size))
return (typ->vt_block + iblock - off); return (fs32_to_cpu(sbi, typ->vt_block) +
iblock - off);
break; break;
case VXFS_TYPED_INDIRECT_DEV4: case VXFS_TYPED_INDIRECT_DEV4:
case VXFS_TYPED_DATA_DEV4: { case VXFS_TYPED_DATA_DEV4: {
@ -230,10 +244,10 @@ vxfs_bmap_typed(struct inode *ip, long iblock)
(struct vxfs_typed_dev4 *)typ; (struct vxfs_typed_dev4 *)typ;
printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n"); printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n");
printk(KERN_INFO "block: %Lu\tsize: %Ld\tdev: %d\n", printk(KERN_INFO "block: %llu\tsize: %lld\tdev: %d\n",
(unsigned long long) typ4->vd4_block, fs64_to_cpu(sbi, typ4->vd4_block),
(unsigned long long) typ4->vd4_size, fs64_to_cpu(sbi, typ4->vd4_size),
typ4->vd4_dev); fs32_to_cpu(sbi, typ4->vd4_dev));
return 0; return 0;
} }
default: default:

17
fs/freevxfs/vxfs_dir.h
View File

@ -48,9 +48,9 @@
* Linux driver for now. * Linux driver for now.
*/ */
struct vxfs_dirblk { struct vxfs_dirblk {
u_int16_t d_free; /* free space in dirblock */ __fs16 d_free; /* free space in dirblock */
u_int16_t d_nhash; /* no of hash chains */ __fs16 d_nhash; /* no of hash chains */
u_int16_t d_hash[1]; /* hash chain */ __fs16 d_hash[1]; /* hash chain */
}; };
/* /*
@ -63,10 +63,10 @@ struct vxfs_dirblk {
* VxFS directory entry. * VxFS directory entry.
*/ */
struct vxfs_direct { struct vxfs_direct {
vx_ino_t d_ino; /* inode number */ __fs32 d_ino; /* inode number */
u_int16_t d_reclen; /* record length */ __fs16 d_reclen; /* record length */
u_int16_t d_namelen; /* d_name length */ __fs16 d_namelen; /* d_name length */
u_int16_t d_hashnext; /* next hash entry */ __fs16 d_hashnext; /* next hash entry */
char d_name[VXFS_NAMELEN]; /* name */ char d_name[VXFS_NAMELEN]; /* name */
}; };
@ -87,6 +87,7 @@ struct vxfs_direct {
/* /*
* VXFS_DIRBLKOV is the overhead of a specific dirblock. * VXFS_DIRBLKOV is the overhead of a specific dirblock.
*/ */
#define VXFS_DIRBLKOV(dbp) ((sizeof(short) * dbp->d_nhash) + 4) #define VXFS_DIRBLKOV(sbi, dbp) \
((sizeof(short) * fs16_to_cpu(sbi, dbp->d_nhash)) + 4)
#endif /* _VXFS_DIR_H_ */ #endif /* _VXFS_DIR_H_ */

5
fs/freevxfs/vxfs_fshead.c
View File

@ -153,7 +153,8 @@ vxfs_read_fshead(struct super_block *sbp)
vxfs_dumpfsh(pfp); vxfs_dumpfsh(pfp);
#endif #endif
tip = vxfs_blkiget(sbp, infp->vsi_iext, sfp->fsh_ilistino[0]); tip = vxfs_blkiget(sbp, infp->vsi_iext,
fs32_to_cpu(infp, sfp->fsh_ilistino[0]));
if (!tip) if (!tip)
goto out_free_pfp; goto out_free_pfp;
@ -169,7 +170,7 @@ vxfs_read_fshead(struct super_block *sbp)
goto out_iput_stilist; goto out_iput_stilist;
} }
tip = vxfs_stiget(sbp, pfp->fsh_ilistino[0]); tip = vxfs_stiget(sbp, fs32_to_cpu(infp, pfp->fsh_ilistino[0]));
if (!tip) if (!tip)
goto out_iput_stilist; goto out_iput_stilist;
infp->vsi_ilist = vxfs_get_fake_inode(sbp, tip); infp->vsi_ilist = vxfs_get_fake_inode(sbp, tip);

28
fs/freevxfs/vxfs_fshead.h
View File

@ -42,20 +42,20 @@
* Fileset header * Fileset header
*/ */
struct vxfs_fsh { struct vxfs_fsh {
u_int32_t fsh_version; /* fileset header version */ __fs32 fsh_version; /* fileset header version */
u_int32_t fsh_fsindex; /* fileset index */ __fs32 fsh_fsindex; /* fileset index */
u_int32_t fsh_time; /* modification time - sec */ __fs32 fsh_time; /* modification time - sec */
u_int32_t fsh_utime; /* modification time - usec */ __fs32 fsh_utime; /* modification time - usec */
u_int32_t fsh_extop; /* extop flags */ __fs32 fsh_extop; /* extop flags */
vx_ino_t fsh_ninodes; /* allocated inodes */ __fs32 fsh_ninodes; /* allocated inodes */
u_int32_t fsh_nau; /* number of IAUs */ __fs32 fsh_nau; /* number of IAUs */
u_int32_t fsh_old_ilesize; /* old size of ilist */ __fs32 fsh_old_ilesize; /* old size of ilist */
u_int32_t fsh_dflags; /* flags */ __fs32 fsh_dflags; /* flags */
u_int32_t fsh_quota; /* quota limit */ __fs32 fsh_quota; /* quota limit */
vx_ino_t fsh_maxinode; /* maximum inode number */ __fs32 fsh_maxinode; /* maximum inode number */
vx_ino_t fsh_iauino; /* IAU inode */ __fs32 fsh_iauino; /* IAU inode */
vx_ino_t fsh_ilistino[2]; /* ilist inodes */ __fs32 fsh_ilistino[2]; /* ilist inodes */
vx_ino_t fsh_lctino; /* link count table inode */ __fs32 fsh_lctino; /* link count table inode */
/* /*
* Slightly more fields follow, but they * Slightly more fields follow, but they

31
fs/freevxfs/vxfs_inode.c
View File

@ -68,6 +68,33 @@ vxfs_dumpi(struct vxfs_inode_info *vip, ino_t ino)
} }
#endif #endif
static inline void dip2vip_cpy(struct vxfs_sb_info *sbi,
struct vxfs_inode_info *vip, struct vxfs_dinode *dip)
{
vip->vii_mode = fs32_to_cpu(sbi, dip->vdi_mode);
vip->vii_nlink = fs32_to_cpu(sbi, dip->vdi_nlink);
vip->vii_uid = fs32_to_cpu(sbi, dip->vdi_uid);
vip->vii_gid = fs32_to_cpu(sbi, dip->vdi_gid);
vip->vii_size = fs64_to_cpu(sbi, dip->vdi_size);
vip->vii_atime = fs32_to_cpu(sbi, dip->vdi_atime);
vip->vii_autime = fs32_to_cpu(sbi, dip->vdi_autime);
vip->vii_mtime = fs32_to_cpu(sbi, dip->vdi_mtime);
vip->vii_mutime = fs32_to_cpu(sbi, dip->vdi_mutime);
vip->vii_ctime = fs32_to_cpu(sbi, dip->vdi_ctime);
vip->vii_cutime = fs32_to_cpu(sbi, dip->vdi_cutime);
vip->vii_orgtype = dip->vdi_orgtype;
vip->vii_blocks = fs32_to_cpu(sbi, dip->vdi_blocks);
vip->vii_gen = fs32_to_cpu(sbi, dip->vdi_gen);
if (VXFS_ISDIR(vip))
vip->vii_dotdot = fs32_to_cpu(sbi, dip->vdi_dotdot);
else if (!VXFS_ISREG(vip) && !VXFS_ISLNK(vip))
vip->vii_rdev = fs32_to_cpu(sbi, dip->vdi_rdev);
/* don't endian swap the fields that differ by orgtype */
memcpy(&vip->vii_org, &dip->vdi_org, sizeof(vip->vii_org));
}
/** /**
* vxfs_blkiget - find inode based on extent # * vxfs_blkiget - find inode based on extent #
@ -102,7 +129,7 @@ vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL))) if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL)))
goto fail; goto fail;
dip = (struct vxfs_dinode *)(bp->b_data + offset); dip = (struct vxfs_dinode *)(bp->b_data + offset);
memcpy(vip, dip, sizeof(*vip)); dip2vip_cpy(VXFS_SBI(sbp), vip, dip);
#ifdef DIAGNOSTIC #ifdef DIAGNOSTIC
vxfs_dumpi(vip, ino); vxfs_dumpi(vip, ino);
#endif #endif
@ -144,7 +171,7 @@ __vxfs_iget(ino_t ino, struct inode *ilistp)
if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL))) if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, GFP_KERNEL)))
goto fail; goto fail;
dip = (struct vxfs_dinode *)(kaddr + offset); dip = (struct vxfs_dinode *)(kaddr + offset);
memcpy(vip, dip, sizeof(*vip)); dip2vip_cpy(VXFS_SBI(ilistp->i_sb), vip, dip);
#ifdef DIAGNOSTIC #ifdef DIAGNOSTIC
vxfs_dumpi(vip, ino); vxfs_dumpi(vip, ino);
#endif #endif

134
fs/freevxfs/vxfs_inode.h
View File

@ -66,74 +66,74 @@ enum {
* Data stored immediately in the inode. * Data stored immediately in the inode.
*/ */
struct vxfs_immed { struct vxfs_immed {
u_int8_t vi_immed[VXFS_NIMMED]; __u8 vi_immed[VXFS_NIMMED];
}; };
struct vxfs_ext4 { struct vxfs_ext4 {
u_int32_t ve4_spare; /* ?? */ __fs32 ve4_spare; /* ?? */
u_int32_t ve4_indsize; /* Indirect extent size */ __fs32 ve4_indsize; /* Indirect extent size */
vx_daddr_t ve4_indir[VXFS_NIADDR]; /* Indirect extents */ __fs32 ve4_indir[VXFS_NIADDR]; /* Indirect extents */
struct direct { /* Direct extents */ struct direct { /* Direct extents */
vx_daddr_t extent; /* Extent number */ __fs32 extent; /* Extent number */
int32_t size; /* Size of extent */ __fs32 size; /* Size of extent */
} ve4_direct[VXFS_NDADDR]; } ve4_direct[VXFS_NDADDR];
}; };
struct vxfs_typed { struct vxfs_typed {
u_int64_t vt_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */ __fs64 vt_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
vx_daddr_t vt_block; /* Extent block */ __fs32 vt_block; /* Extent block */
int32_t vt_size; /* Size in blocks */ __fs32 vt_size; /* Size in blocks */
}; };
struct vxfs_typed_dev4 { struct vxfs_typed_dev4 {
u_int64_t vd4_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */ __fs64 vd4_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
u_int64_t vd4_block; /* Extent block */ __fs64 vd4_block; /* Extent block */
u_int64_t vd4_size; /* Size in blocks */ __fs64 vd4_size; /* Size in blocks */
int32_t vd4_dev; /* Device ID */ __fs32 vd4_dev; /* Device ID */
u_int32_t __pad1; __u8 __pad1;
}; };
/* /*
* The inode as contained on the physical device. * The inode as contained on the physical device.
*/ */
struct vxfs_dinode { struct vxfs_dinode {
int32_t vdi_mode; __fs32 vdi_mode;
u_int32_t vdi_nlink; /* Link count */ __fs32 vdi_nlink; /* Link count */
u_int32_t vdi_uid; /* UID */ __fs32 vdi_uid; /* UID */
u_int32_t vdi_gid; /* GID */ __fs32 vdi_gid; /* GID */
u_int64_t vdi_size; /* Inode size in bytes */ __fs64 vdi_size; /* Inode size in bytes */
u_int32_t vdi_atime; /* Last time accessed - sec */ __fs32 vdi_atime; /* Last time accessed - sec */
u_int32_t vdi_autime; /* Last time accessed - usec */ __fs32 vdi_autime; /* Last time accessed - usec */
u_int32_t vdi_mtime; /* Last modify time - sec */ __fs32 vdi_mtime; /* Last modify time - sec */
u_int32_t vdi_mutime; /* Last modify time - usec */ __fs32 vdi_mutime; /* Last modify time - usec */
u_int32_t vdi_ctime; /* Create time - sec */ __fs32 vdi_ctime; /* Create time - sec */
u_int32_t vdi_cutime; /* Create time - usec */ __fs32 vdi_cutime; /* Create time - usec */
u_int8_t vdi_aflags; /* Allocation flags */ __u8 vdi_aflags; /* Allocation flags */
u_int8_t vdi_orgtype; /* Organisation type */ __u8 vdi_orgtype; /* Organisation type */
u_int16_t vdi_eopflags; __fs16 vdi_eopflags;
u_int32_t vdi_eopdata; __fs32 vdi_eopdata;
union { union {
u_int32_t rdev; __fs32 rdev;
u_int32_t dotdot; __fs32 dotdot;
struct { struct {
u_int32_t reserved; __u32 reserved;
u_int32_t fixextsize; __fs32 fixextsize;
} i_regular; } i_regular;
struct { struct {
u_int32_t matchino; __fs32 matchino;
u_int32_t fsetindex; __fs32 fsetindex;
} i_vxspec; } i_vxspec;
u_int64_t align; __u64 align;
} vdi_ftarea; } vdi_ftarea;
u_int32_t vdi_blocks; /* How much blocks does inode occupy */ __fs32 vdi_blocks; /* How much blocks does inode occupy */
u_int32_t vdi_gen; /* Inode generation */ __fs32 vdi_gen; /* Inode generation */
u_int64_t vdi_version; /* Version */ __fs64 vdi_version; /* Version */
union { union {
struct vxfs_immed immed; struct vxfs_immed immed;
struct vxfs_ext4 ext4; struct vxfs_ext4 ext4;
struct vxfs_typed typed[VXFS_NTYPED]; struct vxfs_typed typed[VXFS_NTYPED];
} vdi_org; } vdi_org;
u_int32_t vdi_iattrino; __fs32 vdi_iattrino;
}; };
#define vdi_rdev vdi_ftarea.rdev #define vdi_rdev vdi_ftarea.rdev
@ -149,32 +149,38 @@ struct vxfs_dinode {
/* /*
* The inode as represented in the main memory. * The inode as represented in the main memory.
*
* TBD: This should become a separate structure...
*/ */
#define vxfs_inode_info vxfs_dinode struct vxfs_inode_info {
__u32 vii_mode;
__u32 vii_nlink; /* Link count */
__u32 vii_uid; /* UID */
__u32 vii_gid; /* GID */
__u64 vii_size; /* Inode size in bytes */
__u32 vii_atime; /* Last time accessed - sec */
__u32 vii_autime; /* Last time accessed - usec */
__u32 vii_mtime; /* Last modify time - sec */
__u32 vii_mutime; /* Last modify time - usec */
__u32 vii_ctime; /* Create time - sec */
__u32 vii_cutime; /* Create time - usec */
__u8 vii_orgtype; /* Organisation type */
union {
__u32 rdev;
__u32 dotdot;
} vii_ftarea;
__u32 vii_blocks; /* How much blocks does inode occupy */
__u32 vii_gen; /* Inode generation */
union {
struct vxfs_immed immed;
struct vxfs_ext4 ext4;
struct vxfs_typed typed[VXFS_NTYPED];
} vii_org;
};
#define vii_mode vdi_mode #define vii_rdev vii_ftarea.rdev
#define vii_uid vdi_uid #define vii_dotdot vii_ftarea.dotdot
#define vii_gid vdi_gid
#define vii_nlink vdi_nlink
#define vii_size vdi_size
#define vii_atime vdi_atime
#define vii_ctime vdi_ctime
#define vii_mtime vdi_mtime
#define vii_blocks vdi_blocks
#define vii_org vdi_org
#define vii_orgtype vdi_orgtype
#define vii_gen vdi_gen
#define vii_rdev vdi_ftarea.rdev #define vii_immed vii_org.immed
#define vii_dotdot vdi_ftarea.dotdot #define vii_ext4 vii_org.ext4
#define vii_fixextsize vdi_ftarea.regular.fixextsize #define vii_typed vii_org.typed
#define vii_matchino vdi_ftarea.vxspec.matchino
#define vii_fsetindex vdi_ftarea.vxspec.fsetindex
#define vii_immed vdi_org.immed
#define vii_ext4 vdi_org.ext4
#define vii_typed vdi_org.typed
#endif /* _VXFS_INODE_H_ */ #endif /* _VXFS_INODE_H_ */

34
fs/freevxfs/vxfs_lookup.c
View File

@ -74,9 +74,10 @@ dir_blocks(struct inode *ip)
* len <= VXFS_NAMELEN and de != NULL are guaranteed by caller. * len <= VXFS_NAMELEN and de != NULL are guaranteed by caller.
*/ */
static inline int static inline int
vxfs_match(int len, const char * const name, struct vxfs_direct *de) vxfs_match(struct vxfs_sb_info *sbi, int len, const char *const name,
struct vxfs_direct *de)
{ {
if (len != de->d_namelen) if (len != fs16_to_cpu(sbi, de->d_namelen))
return 0; return 0;
if (!de->d_ino) if (!de->d_ino)
return 0; return 0;
@ -84,9 +85,10 @@ vxfs_match(int len, const char * const name, struct vxfs_direct *de)
} }
static inline struct vxfs_direct * static inline struct vxfs_direct *
vxfs_next_entry(struct vxfs_direct *de) vxfs_next_entry(struct vxfs_sb_info *sbi, struct vxfs_direct *de)
{ {
return ((struct vxfs_direct *)((char*)de + de->d_reclen)); return ((struct vxfs_direct *)
((char *)de + fs16_to_cpu(sbi, de->d_reclen)));
} }
/** /**
@ -106,6 +108,7 @@ vxfs_next_entry(struct vxfs_direct *de)
static struct vxfs_direct * static struct vxfs_direct *
vxfs_find_entry(struct inode *ip, struct dentry *dp, struct page **ppp) vxfs_find_entry(struct inode *ip, struct dentry *dp, struct page **ppp)
{ {
struct vxfs_sb_info *sbi = VXFS_SBI(ip->i_sb);
u_long npages, page, nblocks, pblocks, block; u_long npages, page, nblocks, pblocks, block;
u_long bsize = ip->i_sb->s_blocksize; u_long bsize = ip->i_sb->s_blocksize;
const char *name = dp->d_name.name; const char *name = dp->d_name.name;
@ -133,14 +136,16 @@ vxfs_find_entry(struct inode *ip, struct dentry *dp, struct page **ppp)
limit = baddr + bsize - VXFS_DIRLEN(1); limit = baddr + bsize - VXFS_DIRLEN(1);
dbp = (struct vxfs_dirblk *)baddr; dbp = (struct vxfs_dirblk *)baddr;
de = (struct vxfs_direct *)(baddr + VXFS_DIRBLKOV(dbp)); de = (struct vxfs_direct *)
(baddr + VXFS_DIRBLKOV(sbi, dbp));
for (; (caddr_t)de <= limit; de = vxfs_next_entry(de)) { for (; (caddr_t)de <= limit;
de = vxfs_next_entry(sbi, de)) {
if (!de->d_reclen) if (!de->d_reclen)
break; break;
if (!de->d_ino) if (!de->d_ino)
continue; continue;
if (vxfs_match(namelen, name, de)) { if (vxfs_match(sbi, namelen, name, de)) {
*ppp = pp; *ppp = pp;
return (de); return (de);
} }
@ -173,7 +178,7 @@ vxfs_inode_by_name(struct inode *dip, struct dentry *dp)
de = vxfs_find_entry(dip, dp, &pp); de = vxfs_find_entry(dip, dp, &pp);
if (de) { if (de) {
ino = de->d_ino; ino = fs32_to_cpu(VXFS_SBI(dip->i_sb), de->d_ino);
kunmap(pp); kunmap(pp);
put_page(pp); put_page(pp);
} }
@ -232,10 +237,12 @@ vxfs_readdir(struct file *fp, struct dir_context *ctx)
{ {
struct inode *ip = file_inode(fp); struct inode *ip = file_inode(fp);
struct super_block *sbp = ip->i_sb; struct super_block *sbp = ip->i_sb;
struct vxfs_sb_info *sbi = VXFS_SBI(sbp);
u_long bsize = sbp->s_blocksize; u_long bsize = sbp->s_blocksize;
u_long page, npages, block, pblocks, nblocks, offset; u_long page, npages, block, pblocks, nblocks, offset;
loff_t pos; loff_t pos;
if (ctx->pos == 0) { if (ctx->pos == 0) {
if (!dir_emit_dot(fp, ctx)) if (!dir_emit_dot(fp, ctx))
return 0; return 0;
@ -280,9 +287,10 @@ vxfs_readdir(struct file *fp, struct dir_context *ctx)
de = (struct vxfs_direct *) de = (struct vxfs_direct *)
(offset ? (offset ?
(kaddr + offset) : (kaddr + offset) :
(baddr + VXFS_DIRBLKOV(dbp))); (baddr + VXFS_DIRBLKOV(sbi, dbp)));
for (; (char *)de <= limit; de = vxfs_next_entry(de)) { for (; (char *)de <= limit;
de = vxfs_next_entry(sbi, de)) {
if (!de->d_reclen) if (!de->d_reclen)
break; break;
if (!de->d_ino) if (!de->d_ino)
@ -290,8 +298,10 @@ vxfs_readdir(struct file *fp, struct dir_context *ctx)
offset = (char *)de - kaddr; offset = (char *)de - kaddr;
ctx->pos = ((page << PAGE_SHIFT) | offset) + 2; ctx->pos = ((page << PAGE_SHIFT) | offset) + 2;
if (!dir_emit(ctx, de->d_name, de->d_namelen, if (!dir_emit(ctx, de->d_name,
de->d_ino, DT_UNKNOWN)) { fs16_to_cpu(sbi, de->d_namelen),
fs32_to_cpu(sbi, de->d_ino),
DT_UNKNOWN)) {
vxfs_put_page(pp); vxfs_put_page(pp);
return 0; return 0;
} }

15
fs/freevxfs/vxfs_olt.c
View File

@ -43,14 +43,14 @@ static inline void
vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp) vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp)
{ {
BUG_ON(infp->vsi_fshino); BUG_ON(infp->vsi_fshino);
infp->vsi_fshino = fshp->olt_fsino[0]; infp->vsi_fshino = fs32_to_cpu(infp, fshp->olt_fsino[0]);
} }
static inline void static inline void
vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp) vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp)
{ {
BUG_ON(infp->vsi_iext); BUG_ON(infp->vsi_iext);
infp->vsi_iext = ilistp->olt_iext[0]; infp->vsi_iext = fs32_to_cpu(infp, ilistp->olt_iext[0]);
} }
static inline u_long static inline u_long
@ -81,13 +81,12 @@ vxfs_read_olt(struct super_block *sbp, u_long bsize)
struct vxfs_olt *op; struct vxfs_olt *op;
char *oaddr, *eaddr; char *oaddr, *eaddr;
bp = sb_bread(sbp, vxfs_oblock(sbp, infp->vsi_oltext, bsize)); bp = sb_bread(sbp, vxfs_oblock(sbp, infp->vsi_oltext, bsize));
if (!bp || !bp->b_data) if (!bp || !bp->b_data)
goto fail; goto fail;
op = (struct vxfs_olt *)bp->b_data; op = (struct vxfs_olt *)bp->b_data;
if (op->olt_magic != VXFS_OLT_MAGIC) { if (fs32_to_cpu(infp, op->olt_magic) != VXFS_OLT_MAGIC) {
printk(KERN_NOTICE "vxfs: ivalid olt magic number\n"); printk(KERN_NOTICE "vxfs: ivalid olt magic number\n");
goto fail; goto fail;
} }
@ -102,14 +101,14 @@ vxfs_read_olt(struct super_block *sbp, u_long bsize)
goto fail; goto fail;
} }
oaddr = bp->b_data + op->olt_size; oaddr = bp->b_data + fs32_to_cpu(infp, op->olt_size);
eaddr = bp->b_data + (infp->vsi_oltsize * sbp->s_blocksize); eaddr = bp->b_data + (infp->vsi_oltsize * sbp->s_blocksize);
while (oaddr < eaddr) { while (oaddr < eaddr) {
struct vxfs_oltcommon *ocp = struct vxfs_oltcommon *ocp =
(struct vxfs_oltcommon *)oaddr; (struct vxfs_oltcommon *)oaddr;
switch (ocp->olt_type) { switch (fs32_to_cpu(infp, ocp->olt_type)) {
case VXFS_OLT_FSHEAD: case VXFS_OLT_FSHEAD:
vxfs_get_fshead((struct vxfs_oltfshead *)oaddr, infp); vxfs_get_fshead((struct vxfs_oltfshead *)oaddr, infp);
break; break;
@ -118,11 +117,11 @@ vxfs_read_olt(struct super_block *sbp, u_long bsize)
break; break;
} }
oaddr += ocp->olt_size; oaddr += fs32_to_cpu(infp, ocp->olt_size);
} }
brelse(bp); brelse(bp);
return 0; return (infp->vsi_fshino && infp->vsi_iext) ? 0 : -EINVAL;
fail: fail:
brelse(bp); brelse(bp);

70
fs/freevxfs/vxfs_olt.h
View File

@ -63,83 +63,83 @@ enum {
* the initial inode list, the fileset header or the device configuration. * the initial inode list, the fileset header or the device configuration.
*/ */
struct vxfs_olt { struct vxfs_olt {
u_int32_t olt_magic; /* magic number */ __fs32 olt_magic; /* magic number */
u_int32_t olt_size; /* size of this entry */ __fs32 olt_size; /* size of this entry */
u_int32_t olt_checksum; /* checksum of extent */ __fs32 olt_checksum; /* checksum of extent */
u_int32_t __unused1; /* ??? */ __u32 __unused1; /* ??? */
u_int32_t olt_mtime; /* time of last mod. (sec) */ __fs32 olt_mtime; /* time of last mod. (sec) */
u_int32_t olt_mutime; /* time of last mod. (usec) */ __fs32 olt_mutime; /* time of last mod. (usec) */
u_int32_t olt_totfree; /* free space in OLT extent */ __fs32 olt_totfree; /* free space in OLT extent */
vx_daddr_t olt_extents[2]; /* addr of this extent, replica */ __fs32 olt_extents[2]; /* addr of this extent, replica */
u_int32_t olt_esize; /* size of this extent */ __fs32 olt_esize; /* size of this extent */
vx_daddr_t olt_next[2]; /* addr of next extent, replica */ __fs32 olt_next[2]; /* addr of next extent, replica */
u_int32_t olt_nsize; /* size of next extent */ __fs32 olt_nsize; /* size of next extent */
u_int32_t __unused2; /* align to 8 byte boundary */ __u32 __unused2; /* align to 8 byte boundary */
}; };
/* /*
* VxFS common OLT entry (on disk). * VxFS common OLT entry (on disk).
*/ */
struct vxfs_oltcommon { struct vxfs_oltcommon {
u_int32_t olt_type; /* type of this record */ __fs32 olt_type; /* type of this record */
u_int32_t olt_size; /* size of this record */ __fs32 olt_size; /* size of this record */
}; };
/* /*
* VxFS free OLT entry (on disk). * VxFS free OLT entry (on disk).
*/ */
struct vxfs_oltfree { struct vxfs_oltfree {
u_int32_t olt_type; /* type of this record */ __fs32 olt_type; /* type of this record */
u_int32_t olt_fsize; /* size of this free record */ __fs32 olt_fsize; /* size of this free record */
}; };
/* /*
* VxFS initial-inode list (on disk). * VxFS initial-inode list (on disk).
*/ */
struct vxfs_oltilist { struct vxfs_oltilist {
u_int32_t olt_type; /* type of this record */ __fs32 olt_type; /* type of this record */
u_int32_t olt_size; /* size of this record */ __fs32 olt_size; /* size of this record */
vx_ino_t olt_iext[2]; /* initial inode list, replica */ __fs32 olt_iext[2]; /* initial inode list, replica */
}; };
/* /*
* Current Usage Table * Current Usage Table
*/ */
struct vxfs_oltcut { struct vxfs_oltcut {
u_int32_t olt_type; /* type of this record */ __fs32 olt_type; /* type of this record */
u_int32_t olt_size; /* size of this record */ __fs32 olt_size; /* size of this record */
vx_ino_t olt_cutino; /* inode of current usage table */ __fs32 olt_cutino; /* inode of current usage table */
u_int32_t __pad; /* unused, 8 byte align */ __u8 __pad; /* unused, 8 byte align */
}; };
/* /*
* Inodes containing Superblock, Intent log and OLTs * Inodes containing Superblock, Intent log and OLTs
*/ */
struct vxfs_oltsb { struct vxfs_oltsb {
u_int32_t olt_type; /* type of this record */ __fs32 olt_type; /* type of this record */
u_int32_t olt_size; /* size of this record */ __fs32 olt_size; /* size of this record */
vx_ino_t olt_sbino; /* inode of superblock file */ __fs32 olt_sbino; /* inode of superblock file */
u_int32_t __unused1; /* ??? */ __u32 __unused1; /* ??? */
vx_ino_t olt_logino[2]; /* inode of log file,replica */ __fs32 olt_logino[2]; /* inode of log file,replica */
vx_ino_t olt_oltino[2]; /* inode of OLT, replica */ __fs32 olt_oltino[2]; /* inode of OLT, replica */
}; };
/* /*
* Inode containing device configuration + it's replica * Inode containing device configuration + it's replica
*/ */
struct vxfs_oltdev { struct vxfs_oltdev {
u_int32_t olt_type; /* type of this record */ __fs32 olt_type; /* type of this record */
u_int32_t olt_size; /* size of this record */ __fs32 olt_size; /* size of this record */
vx_ino_t olt_devino[2]; /* inode of device config files */ __fs32 olt_devino[2]; /* inode of device config files */
}; };
/* /*
* Fileset header * Fileset header
*/ */
struct vxfs_oltfshead { struct vxfs_oltfshead {
u_int32_t olt_type; /* type number */ __fs32 olt_type; /* type number */
u_int32_t olt_size; /* size of this record */ __fs32 olt_size; /* size of this record */
vx_ino_t olt_fsino[2]; /* inodes of fileset header */ __fs32 olt_fsino[2]; /* inodes of fileset header */
}; };
#endif /* _VXFS_OLT_H_ */ #endif /* _VXFS_OLT_H_ */

101
fs/freevxfs/vxfs_super.c
View File

@ -109,14 +109,15 @@ static int
vxfs_statfs(struct dentry *dentry, struct kstatfs *bufp) vxfs_statfs(struct dentry *dentry, struct kstatfs *bufp)
{ {
struct vxfs_sb_info *infp = VXFS_SBI(dentry->d_sb); struct vxfs_sb_info *infp = VXFS_SBI(dentry->d_sb);
struct vxfs_sb *raw_sb = infp->vsi_raw;
bufp->f_type = VXFS_SUPER_MAGIC; bufp->f_type = VXFS_SUPER_MAGIC;
bufp->f_bsize = dentry->d_sb->s_blocksize; bufp->f_bsize = dentry->d_sb->s_blocksize;
bufp->f_blocks = infp->vsi_raw->vs_dsize; bufp->f_blocks = fs32_to_cpu(infp, raw_sb->vs_dsize);
bufp->f_bfree = infp->vsi_raw->vs_free; bufp->f_bfree = fs32_to_cpu(infp, raw_sb->vs_free);
bufp->f_bavail = 0; bufp->f_bavail = 0;
bufp->f_files = 0; bufp->f_files = 0;
bufp->f_ffree = infp->vsi_raw->vs_ifree; bufp->f_ffree = fs32_to_cpu(infp, raw_sb->vs_ifree);
bufp->f_namelen = VXFS_NAMELEN; bufp->f_namelen = VXFS_NAMELEN;
return 0; return 0;
@ -129,6 +130,50 @@ static int vxfs_remount(struct super_block *sb, int *flags, char *data)
return 0; return 0;
} }
static int vxfs_try_sb_magic(struct super_block *sbp, int silent,
unsigned blk, __fs32 magic)
{
struct buffer_head *bp;
struct vxfs_sb *rsbp;
struct vxfs_sb_info *infp = VXFS_SBI(sbp);
int rc = -ENOMEM;
bp = sb_bread(sbp, blk);
do {
if (!bp || !buffer_mapped(bp)) {
if (!silent) {
printk(KERN_WARNING
"vxfs: unable to read disk superblock at %u\n",
blk);
}
break;
}
rc = -EINVAL;
rsbp = (struct vxfs_sb *)bp->b_data;
if (rsbp->vs_magic != magic) {
if (!silent)
printk(KERN_NOTICE
"vxfs: WRONG superblock magic %08x at %u\n",
rsbp->vs_magic, blk);
break;
}
rc = 0;
infp->vsi_raw = rsbp;
infp->vsi_bp = bp;
} while (0);
if (rc) {
infp->vsi_raw = NULL;
infp->vsi_bp = NULL;
brelse(bp);
}
return rc;
}
/** /**
* vxfs_read_super - read superblock into memory and initialize filesystem * vxfs_read_super - read superblock into memory and initialize filesystem
* @sbp: VFS superblock (to fill) * @sbp: VFS superblock (to fill)
@ -149,10 +194,10 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
{ {
struct vxfs_sb_info *infp; struct vxfs_sb_info *infp;
struct vxfs_sb *rsbp; struct vxfs_sb *rsbp;
struct buffer_head *bp = NULL;
u_long bsize; u_long bsize;
struct inode *root; struct inode *root;
int ret = -EINVAL; int ret = -EINVAL;
u32 j;
sbp->s_flags |= MS_RDONLY; sbp->s_flags |= MS_RDONLY;
@ -168,42 +213,42 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
goto out; goto out;
} }
bp = sb_bread(sbp, 1); sbp->s_fs_info = infp;
if (!bp || !buffer_mapped(bp)) {
if (!silent) {
printk(KERN_WARNING
"vxfs: unable to read disk superblock\n");
}
goto out;
}
rsbp = (struct vxfs_sb *)bp->b_data; if (!vxfs_try_sb_magic(sbp, silent, 1,
if (rsbp->vs_magic != VXFS_SUPER_MAGIC) { (__force __fs32)cpu_to_le32(VXFS_SUPER_MAGIC))) {
/* Unixware, x86 */
infp->byte_order = VXFS_BO_LE;
} else if (!vxfs_try_sb_magic(sbp, silent, 8,
(__force __fs32)cpu_to_be32(VXFS_SUPER_MAGIC))) {
/* HP-UX, parisc */
infp->byte_order = VXFS_BO_BE;
} else {
if (!silent) if (!silent)
printk(KERN_NOTICE "vxfs: WRONG superblock magic\n"); printk(KERN_NOTICE "vxfs: can't find superblock.\n");
goto out; goto out;
} }
if ((rsbp->vs_version < 2 || rsbp->vs_version > 4) && !silent) { rsbp = infp->vsi_raw;
printk(KERN_NOTICE "vxfs: unsupported VxFS version (%d)\n", j = fs32_to_cpu(infp, rsbp->vs_version);
rsbp->vs_version); if ((j < 2 || j > 4) && !silent) {
printk(KERN_NOTICE "vxfs: unsupported VxFS version (%d)\n", j);
goto out; goto out;
} }
#ifdef DIAGNOSTIC #ifdef DIAGNOSTIC
printk(KERN_DEBUG "vxfs: supported VxFS version (%d)\n", rsbp->vs_version); printk(KERN_DEBUG "vxfs: supported VxFS version (%d)\n", j);
printk(KERN_DEBUG "vxfs: blocksize: %d\n", rsbp->vs_bsize); printk(KERN_DEBUG "vxfs: blocksize: %d\n",
fs32_to_cpu(infp, rsbp->vs_bsize));
#endif #endif
sbp->s_magic = rsbp->vs_magic; sbp->s_magic = fs32_to_cpu(infp, rsbp->vs_magic);
sbp->s_fs_info = infp;
infp->vsi_raw = rsbp; infp->vsi_oltext = fs32_to_cpu(infp, rsbp->vs_oltext[0]);
infp->vsi_bp = bp; infp->vsi_oltsize = fs32_to_cpu(infp, rsbp->vs_oltsize);
infp->vsi_oltext = rsbp->vs_oltext[0];
infp->vsi_oltsize = rsbp->vs_oltsize;
if (!sb_set_blocksize(sbp, rsbp->vs_bsize)) { j = fs32_to_cpu(infp, rsbp->vs_bsize);
if (!sb_set_blocksize(sbp, j)) {
printk(KERN_WARNING "vxfs: unable to set final block size\n"); printk(KERN_WARNING "vxfs: unable to set final block size\n");
goto out; goto out;
} }
@ -237,7 +282,7 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
vxfs_put_fake_inode(infp->vsi_ilist); vxfs_put_fake_inode(infp->vsi_ilist);
vxfs_put_fake_inode(infp->vsi_stilist); vxfs_put_fake_inode(infp->vsi_stilist);
out: out:
brelse(bp); brelse(infp->vsi_bp);
kfree(infp); kfree(infp);
return ret; return ret;
} }