/*
* Retrieve information about the current table/driver.
*/
static HB_ERRCODE hb_sdfInfo( SDFAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem )
{
HB_TRACE( HB_TR_DEBUG, ( "hb_sdfInfo(%p,%hu,%p)", pArea, uiIndex, pItem ) );
switch( uiIndex )
{
case DBI_CANPUTREC:
hb_itemPutL( pItem, pArea->fTransRec );
break;
case DBI_GETRECSIZE:
hb_itemPutNL( pItem, pArea->uiRecordLen );
break;
case DBI_FULLPATH:
hb_itemPutC( pItem, pArea->szFileName );
break;
case DBI_FILEHANDLE:
hb_itemPutNInt( pItem, ( HB_NHANDLE ) hb_fileHandle( pArea->pFile ) );
break;
case DBI_SHARED:
hb_itemPutL( pItem, pArea->fShared );
break;
case DBI_ISREADONLY:
hb_itemPutL( pItem, pArea->fReadonly );
break;
case DBI_POSITIONED:
hb_itemPutL( pItem, pArea->fPositioned );
break;
case DBI_DB_VERSION:
case DBI_RDD_VERSION:
{
char szBuf[ 64 ];
int iSub = hb_itemGetNI( pItem );
if( iSub == 1 )
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s)", 0, 1, "SDF" );
else if( iSub == 2 )
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s:%d)", 0, 1, "SDF", pArea->area.rddID );
else
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d", 0, 1 );
hb_itemPutC( pItem, szBuf );
break;
}
default:
return SUPER_INFO( &pArea->area, uiIndex, pItem );
}
return HB_SUCCESS;
}
struct inode *efs_iget(struct super_block *super, unsigned long ino)
{
int i, inode_index;
dev_t device;
u32 rdev;
struct buffer_head *bh;
struct efs_sb_info *sb = SUPER_INFO(super);
struct efs_inode_info *in;
efs_block_t block, offset;
struct efs_dinode *efs_inode;
struct inode *inode;
inode = iget_locked(super, ino);
if (IS_ERR(inode))
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
in = INODE_INFO(inode);
/*
** EFS layout:
**
** | cylinder group | cylinder group | cylinder group ..etc
** |inodes|data |inodes|data |inodes|data ..etc
**
** work out the inode block index, (considering initially that the
** inodes are stored as consecutive blocks). then work out the block
** number of that inode given the above layout, and finally the
** offset of the inode within that block.
*/
inode_index = inode->i_ino /
(EFS_BLOCKSIZE / sizeof(struct efs_dinode));
block = sb->fs_start + sb->first_block +
(sb->group_size * (inode_index / sb->inode_blocks)) +
(inode_index % sb->inode_blocks);
offset = (inode->i_ino %
(EFS_BLOCKSIZE / sizeof(struct efs_dinode))) *
sizeof(struct efs_dinode);
bh = sb_bread(inode->i_sb, block);
if (!bh) {
printk(KERN_WARNING "EFS: bread() failed at block %d\n", block);
goto read_inode_error;
}
efs_inode = (struct efs_dinode *) (bh->b_data + offset);
inode->i_mode = be16_to_cpu(efs_inode->di_mode);
<<<<<<< HEAD
static HB_ERRCODE sqlbaseInfo( SQLBASEAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem )
{
switch( uiIndex )
{
case DBI_QUERY:
hb_itemPutC( pItem, pArea->szQuery );
break;
default:
return SUPER_INFO( ( AREAP ) pArea, uiIndex, pItem );
}
return HB_SUCCESS;
}
int efs_statfs(struct super_block *s, struct statfs *buf) {
struct efs_sb_info *sb = SUPER_INFO(s);
buf->f_type = EFS_SUPER_MAGIC; /* efs magic number */
buf->f_bsize = EFS_BLOCKSIZE; /* blocksize */
buf->f_blocks = sb->total_groups * /* total data blocks */
(sb->group_size - sb->inode_blocks);
buf->f_bfree = sb->data_free; /* free data blocks */
buf->f_bavail = sb->data_free; /* free blocks for non-root */
buf->f_files = sb->total_groups * /* total inodes */
sb->inode_blocks *
(EFS_BLOCKSIZE / sizeof(struct efs_dinode));
buf->f_ffree = sb->inode_free; /* free inodes */
buf->f_fsid.val[0] = (sb->fs_magic >> 16) & 0xffff; /* fs ID */
buf->f_fsid.val[1] = sb->fs_magic & 0xffff; /* fs ID */
buf->f_namelen = EFS_MAXNAMELEN; /* max filename length */
return 0;
}
static int efs_statfs(struct dentry *dentry, struct kstatfs *buf) {
struct super_block *sb = dentry->d_sb;
struct efs_sb_info *sbi = SUPER_INFO(sb);
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
buf->f_type = EFS_SUPER_MAGIC; /* efs magic number */
buf->f_bsize = EFS_BLOCKSIZE; /* blocksize */
buf->f_blocks = sbi->total_groups * /* total data blocks */
(sbi->group_size - sbi->inode_blocks);
buf->f_bfree = sbi->data_free; /* free data blocks */
buf->f_bavail = sbi->data_free; /* free blocks for non-root */
buf->f_files = sbi->total_groups * /* total inodes */
sbi->inode_blocks *
(EFS_BLOCKSIZE / sizeof(struct efs_dinode));
buf->f_ffree = sbi->inode_free; /* free inodes */
buf->f_fsid.val[0] = (u32)id;
buf->f_fsid.val[1] = (u32)(id >> 32);
buf->f_namelen = EFS_MAXNAMELEN; /* max filename length */
return 0;
}
struct inode *efs_iget(struct super_block *super, unsigned long ino)
{
int i, inode_index;
dev_t device;
u32 rdev;
struct buffer_head *bh;
struct efs_sb_info *sb = SUPER_INFO(super);
struct efs_inode_info *in;
efs_block_t block, offset;
struct efs_dinode *efs_inode;
struct inode *inode;
inode = iget_locked(super, ino);
if (IS_ERR(inode))
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
in = INODE_INFO(inode);
/*
** EFS layout:
**
** | cylinder group | cylinder group | cylinder group ..etc
** |inodes|data |inodes|data |inodes|data ..etc
**
** work out the inode block index, (considering initially that the
** inodes are stored as consecutive blocks). then work out the block
** number of that inode given the above layout, and finally the
** offset of the inode within that block.
*/
inode_index = inode->i_ino /
(EFS_BLOCKSIZE / sizeof(struct efs_dinode));
block = sb->fs_start + sb->first_block +
(sb->group_size * (inode_index / sb->inode_blocks)) +
(inode_index % sb->inode_blocks);
offset = (inode->i_ino %
(EFS_BLOCKSIZE / sizeof(struct efs_dinode))) *
sizeof(struct efs_dinode);
bh = sb_bread(inode->i_sb, block);
if (!bh) {
printk(KERN_WARNING "EFS: bread() failed at block %d\n", block);
goto read_inode_error;
}
efs_inode = (struct efs_dinode *) (bh->b_data + offset);
inode->i_mode = be16_to_cpu(efs_inode->di_mode);
inode->i_nlink = be16_to_cpu(efs_inode->di_nlink);
inode->i_uid = (uid_t)be16_to_cpu(efs_inode->di_uid);
inode->i_gid = (gid_t)be16_to_cpu(efs_inode->di_gid);
inode->i_size = be32_to_cpu(efs_inode->di_size);
inode->i_atime.tv_sec = be32_to_cpu(efs_inode->di_atime);
inode->i_mtime.tv_sec = be32_to_cpu(efs_inode->di_mtime);
inode->i_ctime.tv_sec = be32_to_cpu(efs_inode->di_ctime);
inode->i_atime.tv_nsec = inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = 0;
/* this is the number of blocks in the file */
if (inode->i_size == 0) {
inode->i_blocks = 0;
} else {
inode->i_blocks = ((inode->i_size - 1) >> EFS_BLOCKSIZE_BITS) + 1;
}
rdev = be16_to_cpu(efs_inode->di_u.di_dev.odev);
if (rdev == 0xffff) {
rdev = be32_to_cpu(efs_inode->di_u.di_dev.ndev);
if (sysv_major(rdev) > 0xfff)
device = 0;
else
device = MKDEV(sysv_major(rdev), sysv_minor(rdev));
} else
device = old_decode_dev(rdev);
/* get the number of extents for this object */
in->numextents = be16_to_cpu(efs_inode->di_numextents);
in->lastextent = 0;
/* copy the extents contained within the inode to memory */
for(i = 0; i < EFS_DIRECTEXTENTS; i++) {
extent_copy(&(efs_inode->di_u.di_extents[i]), &(in->extents[i]));
if (i < in->numextents && in->extents[i].cooked.ex_magic != 0) {
printk(KERN_WARNING "EFS: extent %d has bad magic number in inode %lu\n", i, inode->i_ino);
brelse(bh);
goto read_inode_error;
}
}
brelse(bh);
#ifdef DEBUG
printk(KERN_DEBUG "EFS: efs_iget(): inode %lu, extents %d, mode %o\n",
inode->i_ino, in->numextents, inode->i_mode);
#endif
switch (inode->i_mode & S_IFMT) {
case S_IFDIR:
inode->i_op = &efs_dir_inode_operations;
inode->i_fop = &efs_dir_operations;
break;
case S_IFREG:
inode->i_fop = &generic_ro_fops;
inode->i_data.a_ops = &efs_aops;
break;
case S_IFLNK:
inode->i_op = &page_symlink_inode_operations;
inode->i_data.a_ops = &efs_symlink_aops;
break;
case S_IFCHR:
case S_IFBLK:
case S_IFIFO:
init_special_inode(inode, inode->i_mode, device);
break;
default:
printk(KERN_WARNING "EFS: unsupported inode mode %o\n", inode->i_mode);
goto read_inode_error;
break;
}
unlock_new_inode(inode);
return inode;
read_inode_error:
printk(KERN_WARNING "EFS: failed to read inode %lu\n", inode->i_ino);
iget_failed(inode);
return ERR_PTR(-EIO);
}
efs_block_t efs_map_block(struct inode *inode, efs_block_t block) {
struct efs_sb_info *sb = SUPER_INFO(inode->i_sb);
struct efs_inode_info *in = INODE_INFO(inode);
struct buffer_head *bh = NULL;
int cur, last, first = 1;
int ibase, ioffset, dirext, direxts, indext, indexts;
efs_block_t iblock, result = 0, lastblock = 0;
efs_extent ext, *exts;
last = in->lastextent;
if (in->numextents <= EFS_DIRECTEXTENTS) {
/* first check the last extent we returned */
if ((result = efs_extent_check(&in->extents[last], block, sb)))
return result;
/* if we only have one extent then nothing can be found */
if (in->numextents == 1) {
printk(KERN_ERR "EFS: map_block() failed to map (1 extent)\n");
return 0;
}
direxts = in->numextents;
/*
* check the stored extents in the inode
* start with next extent and check forwards
*/
for(dirext = 1; dirext < direxts; dirext++) {
cur = (last + dirext) % in->numextents;
if ((result = efs_extent_check(&in->extents[cur], block, sb))) {
in->lastextent = cur;
return result;
}
}
printk(KERN_ERR "EFS: map_block() failed to map block %u (dir)\n", block);
return 0;
}
#ifdef DEBUG
printk(KERN_DEBUG "EFS: map_block(): indirect search for logical block %u\n", block);
#endif
direxts = in->extents[0].cooked.ex_offset;
indexts = in->numextents;
for(indext = 0; indext < indexts; indext++) {
cur = (last + indext) % indexts;
/*
* work out which direct extent contains `cur'.
*
* also compute ibase: i.e. the number of the first
* indirect extent contained within direct extent `cur'.
*
*/
ibase = 0;
for(dirext = 0; cur < ibase && dirext < direxts; dirext++) {
ibase += in->extents[dirext].cooked.ex_length *
(EFS_BLOCKSIZE / sizeof(efs_extent));
}
if (dirext == direxts) {
/* should never happen */
printk(KERN_ERR "EFS: couldn't find direct extent for indirect extent %d (block %u)\n", cur, block);
if (bh) brelse(bh);
return 0;
}
/* work out block number and offset of this indirect extent */
iblock = sb->fs_start + in->extents[dirext].cooked.ex_bn +
(cur - ibase) /
(EFS_BLOCKSIZE / sizeof(efs_extent));
ioffset = (cur - ibase) %
(EFS_BLOCKSIZE / sizeof(efs_extent));
if (first || lastblock != iblock) {
if (bh) brelse(bh);
bh = sb_bread(inode->i_sb, iblock);
if (!bh) {
printk(KERN_ERR "EFS: bread() failed at block %d\n", iblock);
return 0;
}
#ifdef DEBUG
printk(KERN_DEBUG "EFS: map_block(): read indirect extent block %d\n", iblock);
#endif
first = 0;
lastblock = iblock;
}
exts = (efs_extent *) bh->b_data;
extent_copy(&(exts[ioffset]), &ext);
if (ext.cooked.ex_magic != 0) {
printk(KERN_ERR "EFS: extent %d has bad magic number in block %d\n", cur, iblock);
if (bh) brelse(bh);
return 0;
}
if ((result = efs_extent_check(&ext, block, sb))) {
if (bh) brelse(bh);
in->lastextent = cur;
return result;
}
}
if (bh) brelse(bh);
printk(KERN_ERR "EFS: map_block() failed to map block %u (indir)\n", block);
return 0;
}
struct super_block *efs_read_super(struct super_block *s, void *d, int silent) {
kdev_t dev = s->s_dev;
struct efs_sb_info *sb;
struct buffer_head *bh;
sb = SUPER_INFO(s);
s->s_magic = EFS_SUPER_MAGIC;
s->s_blocksize = EFS_BLOCKSIZE;
s->s_blocksize_bits = EFS_BLOCKSIZE_BITS;
if( set_blocksize(dev, EFS_BLOCKSIZE) < 0)
{
printk(KERN_ERR "EFS: device does not support %d byte blocks\n",
EFS_BLOCKSIZE);
goto out_no_fs_ul;
}
/* read the vh (volume header) block */
bh = sb_bread(s, 0);
if (!bh) {
printk(KERN_ERR "EFS: cannot read volume header\n");
goto out_no_fs_ul;
}
/*
* if this returns zero then we didn't find any partition table.
* this isn't (yet) an error - just assume for the moment that
* the device is valid and go on to search for a superblock.
*/
sb->fs_start = efs_validate_vh((struct volume_header *) bh->b_data);
brelse(bh);
if (sb->fs_start == -1) {
goto out_no_fs_ul;
}
bh = sb_bread(s, sb->fs_start + EFS_SUPER);
if (!bh) {
printk(KERN_ERR "EFS: cannot read superblock\n");
goto out_no_fs_ul;
}
if (efs_validate_super(sb, (struct efs_super *) bh->b_data)) {
#ifdef DEBUG
printk(KERN_WARNING "EFS: invalid superblock at block %u\n", sb->fs_start + EFS_SUPER);
#endif
brelse(bh);
goto out_no_fs_ul;
}
brelse(bh);
if (!(s->s_flags & MS_RDONLY)) {
#ifdef DEBUG
printk(KERN_INFO "EFS: forcing read-only mode\n");
#endif
s->s_flags |= MS_RDONLY;
}
s->s_op = &efs_superblock_operations;
s->s_root = d_alloc_root(iget(s, EFS_ROOTINODE));
if (!(s->s_root)) {
printk(KERN_ERR "EFS: get root inode failed\n");
goto out_no_fs;
}
return(s);
out_no_fs_ul:
out_no_fs:
return(NULL);
}
static void efs_kill_sb(struct super_block *s)
{
struct efs_sb_info *sbi = SUPER_INFO(s);
kill_block_super(s);
kfree(sbi);
}
/*
* Retrieve information about the current table/driver.
*/
static HB_ERRCODE hb_delimInfo( DELIMAREAP pArea, HB_USHORT uiIndex, PHB_ITEM pItem )
{
HB_TRACE( HB_TR_DEBUG, ( "hb_delimInfo(%p,%hu,%p)", pArea, uiIndex, pItem ) );
switch( uiIndex )
{
case DBI_CANPUTREC:
hb_itemPutL( pItem, pArea->fTransRec );
break;
case DBI_GETRECSIZE:
hb_itemPutNL( pItem, pArea->uiRecordLen );
break;
case DBI_GETDELIMITER:
{
char szDelim[ 2 ];
szDelim[ 0 ] = pArea->cDelim;
szDelim[ 1 ] = '\0';
hb_itemPutC( pItem, szDelim );
break;
}
case DBI_SETDELIMITER:
if( hb_itemType( pItem ) & HB_IT_STRING )
{
const char * szDelim = hb_itemGetCPtr( pItem );
if( hb_stricmp( szDelim, "BLANK" ) == 0 )
{
pArea->cDelim = '\0';
pArea->cSeparator = ' ';
}
#ifndef HB_CLP_STRICT
else if( hb_stricmp( szDelim, "PIPE" ) == 0 )
{
pArea->cDelim = '\0';
pArea->cSeparator = '|';
}
else if( hb_stricmp( szDelim, "TAB" ) == 0 )
{
pArea->cDelim = '\0';
pArea->cSeparator = '\t';
}
else
#else
else if( *szDelim )
#endif
{
pArea->cDelim = *szDelim;
}
}
/*
* a small trick which allow to set character field delimiter and
* field separator in COPY TO ... and APPEND FROM ... commands as
* array. F.e.:
* COPY TO test DELIMITED WITH ({"","|"})
*/
#ifndef HB_CLP_STRICT
else if( hb_itemType( pItem ) & HB_IT_ARRAY )
{
char cSeparator;
if( hb_arrayGetType( pItem, 1 ) & HB_IT_STRING )
pArea->cDelim = *hb_arrayGetCPtr( pItem, 1 );
cSeparator = *hb_arrayGetCPtr( pItem, 2 );
if( cSeparator )
pArea->cSeparator = cSeparator;
}
#endif
break;
case DBI_SEPARATOR:
{
char szSeparator[ 2 ];
const char * szNew = hb_itemGetCPtr( pItem );
szSeparator[ 0 ] = pArea->cSeparator;
szSeparator[ 1 ] = '\0';
if( *szNew )
pArea->cSeparator = *szNew;
hb_itemPutC( pItem, szSeparator );
break;
}
case DBI_FULLPATH:
hb_itemPutC( pItem, pArea->szFileName);
break;
case DBI_FILEHANDLE:
hb_itemPutNInt( pItem, ( HB_NHANDLE ) hb_fileHandle( pArea->pFile ) );
break;
case DBI_SHARED:
hb_itemPutL( pItem, pArea->fShared );
break;
case DBI_ISREADONLY:
hb_itemPutL( pItem, pArea->fReadonly );
break;
case DBI_POSITIONED:
hb_itemPutL( pItem, pArea->fPositioned );
break;
case DBI_DB_VERSION:
case DBI_RDD_VERSION:
{
char szBuf[ 64 ];
int iSub = hb_itemGetNI( pItem );
if( iSub == 1 )
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s)", 0, 1, "DELIM" );
else if( iSub == 2 )
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d (%s:%d)", 0, 1, "DELIM", pArea->area.rddID );
else
hb_snprintf( szBuf, sizeof( szBuf ), "%d.%d", 0, 1 );
hb_itemPutC( pItem, szBuf );
break;
}
default:
return SUPER_INFO( &pArea->area, uiIndex, pItem );
}
