int sba_jfs_find_journal_entries(void)
{
char *data;
if ((data = read_block(JFS_SUPER)) != NULL) {
int i;
struct jfs_superblock *jfs_sb = (struct jfs_superblock *)data;
sba_debug(1, "magic number = %s\n", jfs_sb->s_magic);
sba_debug(1, "block size = %d\n", jfs_sb->s_bsize);
jfs_jour_start = addressPXD(&jfs_sb->s_logpxd);
jfs_jour_size = lengthPXD(&jfs_sb->s_logpxd);
sba_debug(1, "log address = %d\n", jfs_jour_start);
sba_debug(1, "log size = %d\n", jfs_jour_size);
for (i = 0; i < jfs_jour_size; i ++) {
ht_add(h_sba_jfs_journal, i+jfs_jour_start);
}
sba_debug(1, "Added log blocks from %d to %d\n", jfs_jour_start, jfs_jour_start + jfs_jour_size - 1);
free_page((int)data);
}
return 1;
}
/******************************************************************
* NAME: OpenFilSys
*
* FUNCTION: Read the superblock into a buffer.
* Extract various pieces of information.
* Release the buffer.
*
* PARAMETERS: none
*
* NOTES:
*
* RETURNS:
* success: 0
* failure: something else
*/
int32 OpenFilSys( void )
{
int32 rc;
struct superblock *sb;
buf_t *bp;
/*
* validate and retrieve fs parameters from superblock
*/
/* try to read the primary superblock */
rc = bRawRead(LVHandle, (int64)SUPER1_OFF, (int32)PAGESIZE, &bp);
if (rc != 0) {
/* try to read the secondary superblock */
rc = bRawRead(LVHandle, (int64)SUPER2_OFF, (int32)PAGESIZE, &bp);
if (rc != 0) {
#ifdef _JFS_DEBUG
printf("OpenFilSys: i/o error: rc=%d\n", rc);
#endif
return CBBL_CANTREADSBLKS;
}
}
sb = (struct superblock *)bp->b_data;
/* check magic/version number */
if (strncmp(sb->s_magic,JFS_MAGIC,(unsigned)strlen(JFS_MAGIC))
|| (sb->s_version != JFS_VERSION)) {
return CBBL_INVALMAGORVERS;
}
if (sb->s_state & FM_DIRTY) {
return CBBL_FSDIRTY;
}
fsMount->bsize = sb->s_bsize;
fsMount->l2bsize = sb->s_l2bsize;
fsMount->l2bfactor = sb->s_l2bfactor;
fsMount->nbperpage = PAGESIZE >> fsMount->l2bsize;
fsMount->l2nbperpage = log2shift(fsMount->nbperpage);
fsMount->FSSize = sb->s_size >> sb->s_l2bfactor;
fsMount->AGSize = sb->s_agsize;
#ifdef _JFS_DEBUG
printf("superblock: attribute:0x%08x state:0x%08x\n",
sb->s_flag, sb->s_state);
printf("superblock: bsize:%d FSSize:%lld\n",
fsMount->bsize, fsMount->FSSize);
#endif
agg_recptr->fs_blksize = sb->s_bsize; /* aggregate block size */
agg_recptr->lv_blksize = sb->s_pbsize; /* device block size */
agg_recptr->fs_lv_ratio = sb->s_bsize / sb->s_pbsize;
agg_recptr->fs_last_metablk = addressPXD( &sb->s_aim2 ) +
lengthPXD( &sb->s_aim2);
agg_recptr->fs_first_wspblk = addressPXD( &sb->s_fsckpxd );
bRelease(bp);
return rc;
} /* end OpenFilSys() */
void walk_dtree( int device,
uint64 block,
uint32 length,
int64 *total_nblocks)
{
int rc;
dtpage_t dtree_buffer;
uint8 *stbl;
idtentry_t *cur_entry;
uint64 first_block, cur_block, last_block;
uint32 cur_length;
int32 lastindex, index;
int32 thisindex;
/*
* Read the page from disk
*/
rc = ujfs_rw_diskblocks( device, block << sb.s_l2bsize,
length << sb.s_l2bsize, &dtree_buffer, GET );
if( dtree_buffer.header.flag & BT_LEAF ) {
/*
* Nothing to do, since the data here is not pointing to blocks
*/
return;
}
/*
* Mark blocks for each entry and visit that page
*/
lastindex = dtree_buffer.header.nextindex;
stbl = (uint8 *)&(dtree_buffer.slot[dtree_buffer.header.stblindex]);
for( index = 0; index < lastindex; index++ ) {
/*
* This is an internal page of the d-tree. Mark these blocks and
* then walk that page
*/
thisindex = stbl[index];
cur_entry = (idtentry_t *)&(dtree_buffer.slot[thisindex]);
first_block = addressPXD( &(cur_entry->xd) );
cur_length = lengthPXD( &(cur_entry->xd) );
*total_nblocks += cur_length;
last_block = first_block + cur_length;
for( cur_block = first_block; cur_block < last_block; cur_block++ ) {
markit( cur_block, 0 );
}
walk_dtree( device, first_block, cur_length, total_nblocks);
}
}
void walk_dir( int device,
dtroot_t *root_header,
int64 *total_nblocks)
{
int32 index, lastindex;
uint64 first_block, cur_block, last_block;
idtentry_t *cur_entry;
uint32 length;
if( root_header->header.flag & BT_LEAF ) {
/*
* Nothing to do, since the data here is not pointing to blocks
*/
return;
}
/*
* Have root of directory inode btree.
* Walk tree marking all blocks allocated.
*/
lastindex = root_header->header.nextindex;
for( index = 0; index < lastindex; index++ ) {
/*
* This is an internal page of the d-tree. Mark these blocks and
* then walk that page
*/
cur_entry =
(idtentry_t *)&(root_header->slot[root_header->header.stbl[index]]);
first_block = addressPXD( &(cur_entry->xd) );
length = lengthPXD( &(cur_entry->xd) );
*total_nblocks += length;
last_block = first_block + length;
for( cur_block = first_block; cur_block < last_block; cur_block++ ) {
markit( cur_block, 0 );
}
walk_dtree( device, first_block, length, total_nblocks);
}
}
/*
* jfs_extendfs()
*
* function: extend file system;
*
* |-------------------------------|----------|----------|
* file system space fsck inline log
* workspace space
*
* input:
* new LVSize: in LV blocks (required)
* new LogSize: in LV blocks (optional)
* new FSSize: in LV blocks (optional)
*
* new configuration:
* 1. set new LogSize as specified or default from new LVSize;
* 2. compute new FSCKSize from new LVSize;
* 3. set new FSSize as MIN(FSSize, LVSize-(LogSize+FSCKSize)) where
* assert(new FSSize >= old FSSize),
* i.e., file system must not be shrinked;
*/
int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
{
int rc = 0;
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct inode *ipbmap = sbi->ipbmap;
struct inode *ipbmap2;
struct inode *ipimap = sbi->ipimap;
struct jfs_log *log = sbi->log;
struct bmap *bmp = sbi->bmap;
s64 newLogAddress, newFSCKAddress;
int newFSCKSize;
s64 newMapSize = 0, mapSize;
s64 XAddress, XSize, nblocks, xoff, xaddr, t64;
s64 oldLVSize;
s64 newFSSize;
s64 VolumeSize;
int newNpages = 0, nPages, newPage, xlen, t32;
int tid;
int log_formatted = 0;
struct inode *iplist[1];
struct jfs_superblock *j_sb, *j_sb2;
uint old_agsize;
struct buffer_head *bh, *bh2;
/* If the volume hasn't grown, get out now */
if (sbi->mntflag & JFS_INLINELOG)
oldLVSize = addressPXD(&sbi->logpxd) + lengthPXD(&sbi->logpxd);
else
oldLVSize = addressPXD(&sbi->fsckpxd) +
lengthPXD(&sbi->fsckpxd);
if (oldLVSize >= newLVSize) {
printk(KERN_WARNING
"jfs_extendfs: volume hasn't grown, returning\n");
goto out;
}
VolumeSize = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
if (VolumeSize) {
if (newLVSize > VolumeSize) {
printk(KERN_WARNING "jfs_extendfs: invalid size\n");
rc = -EINVAL;
goto out;
}
} else {
/* check the device */
bh = sb_bread(sb, newLVSize - 1);
if (!bh) {
printk(KERN_WARNING "jfs_extendfs: invalid size\n");
rc = -EINVAL;
goto out;
}
bforget(bh);
}
/* Can't extend write-protected drive */
if (isReadOnly(ipbmap)) {
printk(KERN_WARNING "jfs_extendfs: read-only file system\n");
rc = -EROFS;
goto out;
}
/*
* reconfigure LV spaces
* ---------------------
*
* validate new size, or, if not specified, determine new size
*/
/*
* reconfigure inline log space:
*/
if ((sbi->mntflag & JFS_INLINELOG)) {
if (newLogSize == 0) {
/*
* no size specified: default to 1/256 of aggregate
* size; rounded up to a megabyte boundary;
*/
newLogSize = newLVSize >> 8;
t32 = (1 << (20 - sbi->l2bsize)) - 1;
newLogSize = (newLogSize + t32) & ~t32;
newLogSize =
min(newLogSize, MEGABYTE32 >> sbi->l2bsize);
} else {
/*
* chkSuper()
*
* validate the superblock of the file system to be mounted and
* get the file system parameters.
*
* returns
* 0 with fragsize set if check successful
* error code if not successful
*/
static int chkSuper(struct super_block *sb)
{
int rc = 0;
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct jfs_superblock *j_sb;
struct buffer_head *bh;
int AIM_bytesize, AIT_bytesize;
int expected_AIM_bytesize, expected_AIT_bytesize;
s64 AIM_byte_addr, AIT_byte_addr, fsckwsp_addr;
s64 byte_addr_diff0, byte_addr_diff1;
s32 bsize;
if ((rc = readSuper(sb, &bh)))
return rc;
j_sb = (struct jfs_superblock *)bh->b_data;
/*
* validate superblock
*/
/* validate fs signature */
if (strncmp(j_sb->s_magic, JFS_MAGIC, 4) ||
le32_to_cpu(j_sb->s_version) > JFS_VERSION) {
rc = -EINVAL;
goto out;
}
bsize = le32_to_cpu(j_sb->s_bsize);
#ifdef _JFS_4K
if (bsize != PSIZE) {
jfs_err("Currently only 4K block size supported!");
rc = -EINVAL;
goto out;
}
#endif /* _JFS_4K */
jfs_info("superblock: flag:0x%08x state:0x%08x size:0x%Lx",
le32_to_cpu(j_sb->s_flag), le32_to_cpu(j_sb->s_state),
(unsigned long long) le64_to_cpu(j_sb->s_size));
/* validate the descriptors for Secondary AIM and AIT */
if ((j_sb->s_flag & cpu_to_le32(JFS_BAD_SAIT)) !=
cpu_to_le32(JFS_BAD_SAIT)) {
expected_AIM_bytesize = 2 * PSIZE;
AIM_bytesize = lengthPXD(&(j_sb->s_aim2)) * bsize;
expected_AIT_bytesize = 4 * PSIZE;
AIT_bytesize = lengthPXD(&(j_sb->s_ait2)) * bsize;
AIM_byte_addr = addressPXD(&(j_sb->s_aim2)) * bsize;
AIT_byte_addr = addressPXD(&(j_sb->s_ait2)) * bsize;
byte_addr_diff0 = AIT_byte_addr - AIM_byte_addr;
fsckwsp_addr = addressPXD(&(j_sb->s_fsckpxd)) * bsize;
byte_addr_diff1 = fsckwsp_addr - AIT_byte_addr;
if ((AIM_bytesize != expected_AIM_bytesize) ||
(AIT_bytesize != expected_AIT_bytesize) ||
(byte_addr_diff0 != AIM_bytesize) ||
(byte_addr_diff1 <= AIT_bytesize))
j_sb->s_flag |= cpu_to_le32(JFS_BAD_SAIT);
}
if ((j_sb->s_flag & cpu_to_le32(JFS_GROUPCOMMIT)) !=
cpu_to_le32(JFS_GROUPCOMMIT))
j_sb->s_flag |= cpu_to_le32(JFS_GROUPCOMMIT);
/* validate fs state */
if (j_sb->s_state != cpu_to_le32(FM_CLEAN) &&
!(sb->s_flags & MS_RDONLY)) {
jfs_err("jfs_mount: Mount Failure: File System Dirty.");
rc = -EINVAL;
goto out;
}
sbi->state = le32_to_cpu(j_sb->s_state);
sbi->mntflag = le32_to_cpu(j_sb->s_flag);
/*
* JFS always does I/O by 4K pages. Don't tell the buffer cache
* that we use anything else (leave s_blocksize alone).
*/
sbi->bsize = bsize;
sbi->l2bsize = le16_to_cpu(j_sb->s_l2bsize);
/*
* For now, ignore s_pbsize, l2bfactor. All I/O going through buffer
* cache.
*/
sbi->nbperpage = PSIZE >> sbi->l2bsize;
sbi->l2nbperpage = L2PSIZE - sbi->l2bsize;
sbi->l2niperblk = sbi->l2bsize - L2DISIZE;
if (sbi->mntflag & JFS_INLINELOG)
sbi->logpxd = j_sb->s_logpxd;
else {
sbi->logdev = new_decode_dev(le32_to_cpu(j_sb->s_logdev));
memcpy(sbi->uuid, j_sb->s_uuid, sizeof(sbi->uuid));
memcpy(sbi->loguuid, j_sb->s_loguuid, sizeof(sbi->uuid));
}
sbi->fsckpxd = j_sb->s_fsckpxd;
sbi->ait2 = j_sb->s_ait2;
out:
brelse(bh);
return rc;
}
/*
* NAME: jfs_statfs(vfsp, sfsp, crp)
*
* FUNCTION: get file system status <sfsp> from vfs <vfsp>
*
* PARAMETER: vfsp - virtual file system
* sfsp - file status information structure
* crp - credential
*
* RETURN: zero on success, non-zero on failure
*
* serialization: statfs() and extendfs() serializes by inode lock
* of the inode map for both inode map and block allocation map.
* All other access to fragment allocation map is serialized
* under VMM locking.
*
* note: percolation of file system information:
* support struct statfs (sys/statfs.h) for get file system status
* service call statfs().
* (XPG4.2 defines struct statvfs in sys/statvfs.h for statvfs()
* which requires statfs() and additional information)
*/
jfs_statfs(
register struct vfs *vfsp,
register struct statfs *statfsp,
struct ucred *crp)
{
register int32 rc;
register inode_t *ipmnt; /* mount inode */
inode_t *ipimap, *ipbmap;
cbuf_t *bpsuper;
struct superblock *sb = NULL;
int32 fsck_length, log_length;
NOISE(1,("jfs_statfs: vfs:0x%08x\n", vfsp));
/*
* get the file system stats from the superblock
*/
ipimap = (struct inode *)vfsp->vfs_data;
ipmnt = ipimap->i_ipmnt;
if (rc = readSuper(ipmnt, &bpsuper))
goto out;
sb = (struct superblock *)(bpsuper->cm_cdata);
/*
bcopy(sb->s_fname, statfsp->f_fname, sizeof(sb->s_fname));
*/
bcopy(sb->s_fpack, statfsp->f_fpack, sizeof(sb->s_fpack));
statfsp->f_bsize = PSIZE; /* preferred i/o block size */
statfsp->f_fsize = sb->s_bsize; /* fundamental block size */
fsck_length = lengthPXD(&(sb->s_fsckpxd));
log_length = lengthPXD(&(sb->s_logpxd));
rawRelease(bpsuper);
/* statfs()/extendfs() serialized by inode lock of the inode map
* for both inode map and block allocation map.
*/
IREAD_LOCK(ipimap);
/*
* get the block stats from the bmap
*/
ipbmap = ipmnt->i_ipbmap;
statfsp->f_blocks = (ipbmap->i_bmap->db_mapsize + fsck_length +
log_length) >> ipbmap->i_bmap->db_l2nbperpage;
statfsp->f_bfree = statfsp->f_bavail =
ipbmap->i_bmap->db_nfree >> ipbmap->i_bmap->db_l2nbperpage;
/*
* get the file stats from the ipimap
*/
statfsp->f_files = ipimap->i_imap->im_numinos;
statfsp->f_ffree = ipimap->i_imap->im_numfree;
/*
* fill in from vfs
*/
statfsp->f_fsid = vfsp->vfs_fsid;
statfsp->f_vfstype = MNT_XJFS;
statfsp->f_vfsnumber = vfsp->vfs_number;
statfsp->f_name_max = JFS_NAME_MAX;
/*
* fields in the statfs structure that we don't fill in ...
*
long f_version; version/type of statfs, 0 for now
long f_type; type of info, 0 for now
long f_vfsoff; reserved, for vfs specific data offset
long f_vfslen; reserved, for len of vfs specific data
long f_vfsvers; reserved, for vers of vfs specific data
*/
out:
IREAD_UNLOCK(ipimap);
return rc;
}
int jfs_extendfs(struct super_block *sb, s64 newLVSize, int newLogSize)
{
int rc = 0;
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct inode *ipbmap = sbi->ipbmap;
struct inode *ipbmap2;
struct inode *ipimap = sbi->ipimap;
struct jfs_log *log = sbi->log;
struct bmap *bmp = sbi->bmap;
s64 newLogAddress, newFSCKAddress;
int newFSCKSize;
s64 newMapSize = 0, mapSize;
s64 XAddress, XSize, nblocks, xoff, xaddr, t64;
s64 oldLVSize;
s64 newFSSize;
s64 VolumeSize;
int newNpages = 0, nPages, newPage, xlen, t32;
int tid;
int log_formatted = 0;
struct inode *iplist[1];
struct jfs_superblock *j_sb, *j_sb2;
s64 old_agsize;
int agsizechanged = 0;
struct buffer_head *bh, *bh2;
if (sbi->mntflag & JFS_INLINELOG)
oldLVSize = addressPXD(&sbi->logpxd) + lengthPXD(&sbi->logpxd);
else
oldLVSize = addressPXD(&sbi->fsckpxd) +
lengthPXD(&sbi->fsckpxd);
if (oldLVSize >= newLVSize) {
printk(KERN_WARNING
"jfs_extendfs: volume hasn't grown, returning\n");
goto out;
}
VolumeSize = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
if (VolumeSize) {
if (newLVSize > VolumeSize) {
printk(KERN_WARNING "jfs_extendfs: invalid size\n");
rc = -EINVAL;
goto out;
}
} else {
bh = sb_bread(sb, newLVSize - 1);
if (!bh) {
printk(KERN_WARNING "jfs_extendfs: invalid size\n");
rc = -EINVAL;
goto out;
}
bforget(bh);
}
if (isReadOnly(ipbmap)) {
printk(KERN_WARNING "jfs_extendfs: read-only file system\n");
rc = -EROFS;
goto out;
}
if ((sbi->mntflag & JFS_INLINELOG)) {
if (newLogSize == 0) {
newLogSize = newLVSize >> 8;
t32 = (1 << (20 - sbi->l2bsize)) - 1;
newLogSize = (newLogSize + t32) & ~t32;
newLogSize =
min(newLogSize, MEGABYTE32 >> sbi->l2bsize);
} else {
/****************************************************************************
* NAME: process_Inode_Dtree
*
* FUNCTION: Traverse the dtree of the given directory inode
* looking for allocated extents containing bad blocks.
*
* PARAMETERS:
* dip ptr to the owning disk inode in a buffer
*
* doRelocate 0 => this is not the JFS Bad Block inode
* !0 => this is the JFS Bad Block inode
*
* NOTES:
*
* RETURNS:
* success: 0
* failure: something else
*/
int32 process_Inode_Dtree( dinode_t *dip, int8 doRelocate )
{
int32 pid_rc = 0;
int32 relocate_rc = 0;
dtpage_t *p;
int8 *stbl;
int32 i;
pxd_t *pxd;
int64 xaddr, lmxaddr, xlastblk;
int32 xlen;
int8 didRelocate = 0;
cbbl_bdblk_recptr bdblk_recptr = NULL;
int32 pList;
ULONG pListLen = 0;
clrbblks_t pData;
ULONG pDataLen = 0;
int64 lmpg_addr;
int32 lmxlen;
dtpage_t next_dtpg; /* next dtpage to work on */
dtpage_t *pnext_dtpg;
int32 ndtpg_inx; /* the next index in next_dtpg to work on */
/*
* we start with the root
*/
pnext_dtpg = p = (dtpage_t *)&dip->di_btroot;
/*
* is it leaf, i.e., inode inline data ?
*/
if (p->header.flag & BT_LEAF) {
goto out;
}
p->header.next = 0;
/*
* save leftmost dtpage xaddr
*/
lmpg_addr = 0;
stbl = DT_GETSTBL(p);
pxd = (pxd_t *)&p->slot[stbl[0]];
/*
* save leftmost child dtpage extent
*/
lmxaddr = addressPXD(pxd); /* leftmost child xaddr */
lmxlen = lengthPXD(pxd);
ndtpg_inx = 0;
/*
* scan each level of dtree
*/
while(1) {
/*
* scan each dtpage of current level of dtree
*/
while(1) {
stbl = DT_GETSTBL(p);
/*
* scan each idtentry in current dtpage
*/
for (i = ndtpg_inx; i < p->header.nextindex; i++) {
pxd = (pxd_t *)&p->slot[stbl[i]];
/*
* does the extent contain at least 1
* bad block?
*/
xaddr = addressPXD(pxd);
xlen = lengthPXD(pxd);
pid_rc = baltree_search( xaddr, &bdblk_recptr );
if( pid_rc != 0 ) { /* something fatal on search */
return( pid_rc );
}
else if( bdblk_recptr == NULL ) { /* hit end of tree w/o match */
continue;
} /* end hit end of tree w/o match */
xlastblk = xaddr + xlen - 1;
if( bdblk_recptr->fs_blkno <= xlastblk ) { /*
* the extent contains at least 1 bad block
*/
#ifdef _JFS_DEBUG
printf("bad block 0x0%llx found in dtree for inode %d\n",
bdblk_recptr->fs_blkno, dip->di_number );
#endif
if( !doRelocate ) { /* relocation not requested */
pid_rc = we_DidntTryTo_Relocate( xaddr,
xlastblk,
bdblk_recptr
);
} /* end relocation not requested */
else { /* relocation is requested */
pDataLen = sizeof(clrbblks_t);
pData.flag = CLRBBLKS_RELOCATE | IFDIR | DTPAGE;
//PS24072004 pData.dev = lvMount->LVNumber;
pData.dev = LVNumber;
pData.fileset = dip->di_fileset;
pData.inostamp = dip->di_inostamp;
pData.ino = dip->di_number;
pData.gen = dip->di_gen;
pData.xoff = lmpg_addr; /* leftmost page
* describing this level
*/
pData.old_xaddr = xaddr;
pData.new_xaddr = 0;
pData.xlen = xlen;
pData.agg_blksize = agg_recptr->fs_blksize;
/*
* attempt to relocate the extent
*/
didRelocate = 0;
relocate_rc = fscntl( JFSCTL_CLRBBLKS,
(void *)&pList, &pListLen,
(void *)&pData, &pDataLen
);
if( (relocate_rc == 0) &&
(pData.new_xaddr != 0) ) { /*
* extent has been relocated
*/
didRelocate = -1;
} /* end extent has been relocated */
/*
* Now handle the individual bad block(s)
* in the extent
*/
if( didRelocate ) { /*
* actually did relocate
*/
pid_rc = we_Did_Relocate( xaddr,
xlastblk,
bdblk_recptr
);
} /* end actually did relocate */
else { /* tried but failed to relocate */
pid_rc = we_Couldnt_Relocate( xaddr,
xlastblk,
bdblk_recptr,
relocate_rc
);
} /* end else tried but failed to relocate */
} /* end else relocation is requested */
} /* end the extent contains at least 1 bad block */
} /* end for loop */
/*
* read in next/right sibling dtpage
*/
if (p->header.next != 0) {
xaddr = p->header.next;
pid_rc = pRead(fsMount, xaddr, fsMount->nbperpage, &next_dtpg);
if (pid_rc != 0) {
return CBBL_CANTREADNEXTDTPG; /* i/o error */
}
pnext_dtpg = p = &next_dtpg;
ndtpg_inx = 0;
}
else
break;
} /* end while current level scan */
/*
* descend: read leftmost dtpage of next lower level of dtree
*/
/*
* the first child of the dtroot split may not have PSIZE
*/
pid_rc = pRead(fsMount, lmxaddr, lmxlen, &next_dtpg);
if ( pid_rc != 0 ) {
return CBBL_CANTREADLMDTCHILD; /* i/o error */
}
pnext_dtpg = p = &next_dtpg;
/*
* for dir, the leaf contains data, its pxd info
* has been reported by the parent page. so we stop here
*/
if (p->header.flag & BT_LEAF) {
break;
}
/*
* save leftmost dtpage xaddr
*/
lmpg_addr = lmxaddr;
stbl = DT_GETSTBL(p);
pxd = (pxd_t *)&p->slot[stbl[0]];
/*
* save leftmost child dtpage extent
*/
lmxaddr = addressPXD(pxd); /* leftmost child xaddr */
lmxlen = lengthPXD(pxd);
ndtpg_inx = 0;
} /* end while scan each level of tree */
/* reset global state variable for the inode */
out:
pnext_dtpg = NULL;
return pid_rc;
} /* end process_Inode_Dtree() */
/****************************************************************************
* NAME: process_FilesetInodes
*
* FUNCTION: Reads in the fileset inode extents, one by one, and for
* each in-use inode, calls process_Inode() to scan for
* blocks on the bad block list and handle any that are
* detected.
*
* PARAMETERS: none
*
* NOTES:
*
* RETURNS:
* success: 0
* failure: something else
*/
int32 process_FilesetInodes ( )
{
int32 pfsi_rc = 0;
dinode_t *inoptr = NULL;
dinomap_t *icp;
int64 xaddr;
int32 xlen;
int8 isBadBlockInode = 0;
/*
* scan each IAG in the file set
*/
icp = (dinomap_t *)&IMap.ctl;
for ( agg_recptr->iag_idx = 0;
( (agg_recptr->iag_idx < icp->in_nextiag) &&
(pfsi_rc == 0) &&
(agg_recptr->bdblk_baltree.seq_list != NULL) );
agg_recptr->iag_idx++) { /* for each IAG */
/*
* read in the next IAG
*/
pfsi_rc = readIMapSequential(&iagbuf);
/*
* process the extents described by the IAG
*/
for ( agg_recptr->extent_idx = 0;
( (agg_recptr->extent_idx < EXTSPERIAG) &&
(pfsi_rc == 0) &&
(agg_recptr->bdblk_baltree.seq_list != NULL) );
agg_recptr->extent_idx++) { /* for each extent in the IAG */
/*
* Get the address and length of the extent
*/
xaddr = addressPXD(&iagbuf.inoext[agg_recptr->extent_idx]);
xlen = lengthPXD(&iagbuf.inoext[agg_recptr->extent_idx]);
/*
* If the extent isn't allocated, bump current inode number
*/
if( xaddr == 0 ) { /* not allocated */
agg_recptr->this_inonum += INOSPEREXT;
}
else { /* extent is allocated */
/*
* Otherwise, read in the inode extent
*/
pfsi_rc = pRead(fsMount, xaddr, xlen, (void *)ixbuf);
/*
* process the inodes in the extent
*/
for ( agg_recptr->inode_idx = 0;
( (agg_recptr->inode_idx < INOSPEREXT) &&
(pfsi_rc == 0) &&
(agg_recptr->bdblk_baltree.seq_list != NULL) );
agg_recptr->inode_idx++) { /*
* for each inode in the extent
*/
inoptr = &ixbuf[agg_recptr->inode_idx];
/*
* if the inode isn't in use, just
* increment the inode number
*/
if( (inoptr->di_nlink == 0) ||
(inoptr->di_inostamp != DIIMap.di_inostamp) ) {
agg_recptr->this_inonum += 1;
}
/*
* otherwise, scan the inode for bad blocks
* allocated to it and, if possible, relocate
* their contents and get them transferred to
* the JFS Bad Block Inode
*/
else { /* the inode is in use */
pfsi_rc = process_Inode( isBadBlockInode, inoptr );
/*
* increment to the next inode
*/
agg_recptr->this_inonum += 1;
} /* end else the inode is in use */
} /* end for each inode in the extent */
} /* end else extent is allocated */
} /* end for each extent in the IAG */
} /* end for each IAG */
return( pfsi_rc );
} /* end process_FilesetInodes() */
/* look at jfs_logredo() and logRead() from logredo in jfsutils */
int sba_jfs_handle_journal_block(int sector, char *data)
{
int off;
int ret;
struct logpage *lp;
struct lrd *ld;
char *log_data_ptr;
void *ptr;
int ld_flag;
int nwords;
int type = JOURNAL_DATA_BLOCK;
if (sba_jfs_journal_super_block(sector)) {
return JOURNAL_SUPER_BLOCK;
}
/* each log page that is written is of the form "struct logpage" */
lp = (struct logpage *)data;
off = lp->h.eor & (LOGPSIZE - 1);
sba_debug(0, "The end of log offset of last record write = %d (h), %d (t)\n", lp->h.eor, lp->t.eor);
sba_debug(0, "offset is %d head %u tail %u\n", off, (unsigned int)&(lp->h), (unsigned int)&(lp->t));
ld = kmalloc(sizeof(struct logpage), GFP_KERNEL);
log_data_ptr = kmalloc(4096, GFP_KERNEL);
nwords = LOGRDSIZE/4;
ret = sba_jfs_get_next_log_record(nwords, (int *)ld, data, &off);
ld_flag = 1;
while (ret >= 0) {
if (ld_flag) {
sba_debug(0, "Length = %d , Backchain = %d\n", ld->length, ld->backchain);
long long blocknr = -1;
switch (ld->type) {
case LOG_COMMIT:
sba_debug(0, "Found a LOG_COMMIT record\n");
type = JOURNAL_COMMIT_BLOCK;
break;
case LOG_MOUNT:
sba_debug(0, "Found a LOG_MOUNT record\n");
break;
case LOG_SYNCPT:
sba_debug(0, "Found a LOG_SYNCPT record\n");
break;
case LOG_REDOPAGE:
sba_debug(0, "Found a LOG_REDOPAGE record (address %lld, length %d)\n",
addressPXD(&ld->log.redopage.pxd), lengthPXD(&ld->log.redopage.pxd));
blocknr = addressPXD(&ld->log.redopage.pxd);
break;
case LOG_NOREDOPAGE:
sba_debug(0, "Found a LOG_NOREDOPAGE record (address %lld length %d)\n",
addressPXD(&ld->log.noredopage.pxd), lengthPXD(&ld->log.noredopage.pxd));
blocknr = addressPXD(&ld->log.noredopage.pxd);
break;
case LOG_NOREDOINOEXT:
sba_debug(0, "Found a LOG_NOREDOINOEXT record (address %lld length %d)\n",
addressPXD(&ld->log.noredoinoext.pxd), lengthPXD(&ld->log.noredoinoext.pxd));
blocknr = addressPXD(&ld->log.noredoinoext.pxd);
break;
case LOG_UPDATEMAP:
sba_debug(0, "Found a LOG_UPDATEMAP record (address %lld length %d nxd %d)\n",
addressPXD(&ld->log.updatemap.pxd), lengthPXD(&ld->log.updatemap.pxd), ld->log.updatemap.nxd);
blocknr = addressPXD(&ld->log.updatemap.pxd);
break;
default:
sba_debug(1, "Found an UNKNOWN record\n");
break;
}
if (blocknr != -1) {
if (sba_jfs_insert_journaled_blocks(blocknr) == -1) {
sba_debug(1, "Error: inserting blk=%lld into journaled blocks list\n", blocknr);
}
}
sba_debug(0, "Next offset = %d\n", off);
}
else {
sba_debug(0, "Skipping data = %d words\n", nwords);
}
if (ld_flag) {
if (ld->length > 0) {
nwords = (ld->length + 3) / 4;
ptr = log_data_ptr;
ld_flag = 0;
}
else {
nwords = LOGRDSIZE/4;
ptr = ld;
ld_flag = 1;
}
}
else {
nwords = LOGRDSIZE/4;
ptr = ld;
ld_flag = 1;
}
ret = sba_jfs_get_next_log_record(nwords, (int *)ptr, data, &off);
}
return type;
}
void walk_inoext( int device,
uint64 address,
uint32 length,
uint32 wmap,
dinomap_t *control_page,
uint32 agno,
ino_t start_inum,
uint32 *found_map,
int32 inostamp )
{
dinode_t *next_inode;
uint32 left_to_read = length << sb.s_l2bsize;
uint64 cur_address = address << sb.s_l2bsize;
int32 index, rc;
uint32 map = wmap;
char page_buffer[PSIZE];
ino_t cur_inum = start_inum;
uint32 mask = HIGHORDER;
uint64 first_block, cur_block, last_block;
uint32 num_blocks;
int64 total_nblocks;
*found_map = 0;
while( (left_to_read > 0) ) {
/*
* Read next page of inodes for this extent
*/
rc = ujfs_rw_diskblocks( device, cur_address, PSIZE, page_buffer, GET );
cur_address += PSIZE;
left_to_read -= PSIZE;
next_inode = (dinode_t *)page_buffer;
for( index = 0; index < INOSPERPAGE;
index++, next_inode++, cur_inum++, map <<= 1, mask >>= 1 ) {
/*
* Initialize count for this inode's number of blocks
*/
total_nblocks = 0;
/*
* If this inode is allocated, mark blocks for its b-tree
*/
if( (map & HIGHORDER) != 0 ) {
if( next_inode->di_nlink <= 0 ) {
error++;
printf("Inode %d (fileset: %d) link count bad: %d\n",
next_inode->di_number, next_inode->di_fileset,
next_inode->di_nlink);
} else {
*found_map |= mask;
}
/*
* Account for any blocks used by EA for this inode
*/
if( next_inode->di_ea.flag & DXD_EXTENT ) {
first_block = addressDXD(&(next_inode->di_ea));
num_blocks = lengthDXD(&(next_inode->di_ea));
total_nblocks += num_blocks;
last_block = first_block + num_blocks;
for( cur_block = first_block; cur_block < last_block;
cur_block++ ) {
markit( cur_block, 0 );
}
}
if( (next_inode->di_fileset == AGGREGATE_I) &&
(next_inode->di_number == FILESYSTEM_I) ) {
/*
* Need to account for inode map's blocks
*/
walk_inode_tree(device, (xtpage_t *)&next_inode->di_btroot,
&total_nblocks, 0);
/*
* Need to walk this tree of inodes
*/
rc = walk_ait( device, next_inode, TRUE );
if( rc != 0 ) {
error++;
printf("Problem with Fileset Inode Allocation Map.\n");
}
} else if( (next_inode->di_fileset == AGGREGATE_I) &&
(next_inode->di_number == BADBLOCK_I) ) {
walk_inode_tree(device, (xtpage_t *)&next_inode->di_btroot,
&total_nblocks, BADBLOCK);
} else if( next_inode->di_mode & IFDIR ) {
/*
* Need to walk the extents as directory extents
*/
walk_dir( device, (dtroot_t *)&(next_inode->di_btroot),
&total_nblocks);
} else {
walk_inode_tree(device, (xtpage_t *)&next_inode->di_btroot,
&total_nblocks, 0);
}
/*
* Now total_nblocks contains the total number of blocks
* actually allocated for this inode. Compare this to the
* on-disk information.
*/
if( next_inode->di_nblocks != total_nblocks ) {
error++;
printf(
"Inode %d (fileset: %d) nblocks bad, disk: %lld, actual: %lld\n",
next_inode->di_number, next_inode->di_fileset,
next_inode->di_nblocks, total_nblocks);
}
} else {
if( next_inode->di_number == cur_inum &&
next_inode->di_inostamp == inostamp &&
addressPXD(&(next_inode->di_ixpxd)) == address &&
lengthPXD(&(next_inode->di_ixpxd)) == length &&
next_inode->di_nlink > 0 ) {
error++;
printf("Inode %d (fileset: %d) link count bad: %d\n",
next_inode->di_number, next_inode->di_fileset,
next_inode->di_nlink);
*found_map |= mask;
}
control_page->in_numfree++;
control_page->in_agctl[agno].numfree++;
}
}
}
}
