static void
vxfs_put_super(struct super_block *sbp)
{
struct vxfs_sb_info *infp = VXFS_SBI(sbp);
vxfs_put_fake_inode(infp->vsi_fship);
vxfs_put_fake_inode(infp->vsi_ilist);
vxfs_put_fake_inode(infp->vsi_stilist);
brelse(infp->vsi_bp);
kfree(infp);
}
/**
* vxfs_read_super - read superblock into memory and initialize filesystem
* @sbp: VFS superblock (to fill)
* @dp: fs private mount data
* @silent: do not complain loudly when sth is wrong
*
* Description:
* We are called on the first mount of a filesystem to read the
* superblock into memory and do some basic setup.
*
* Returns:
* The superblock on success, else %NULL.
*
* Locking:
* We are under the bkl and @sbp->s_lock.
*/
static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
{
struct vxfs_sb_info *infp;
struct vxfs_sb *rsbp;
struct buffer_head *bp = NULL;
u_long bsize;
struct inode *root;
int ret = -EINVAL;
sbp->s_flags |= MS_RDONLY;
infp = kzalloc(sizeof(*infp), GFP_KERNEL);
if (!infp) {
printk(KERN_WARNING "vxfs: unable to allocate incore superblock\n");
return -ENOMEM;
}
bsize = sb_min_blocksize(sbp, BLOCK_SIZE);
if (!bsize) {
printk(KERN_WARNING "vxfs: unable to set blocksize\n");
goto out;
}
bp = sb_bread(sbp, 1);
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 (rsbp->vs_magic != VXFS_SUPER_MAGIC) {
if (!silent)
printk(KERN_NOTICE "vxfs: WRONG superblock magic\n");
goto out;
}
if ((rsbp->vs_version < 2 || rsbp->vs_version > 4) && !silent) {
printk(KERN_NOTICE "vxfs: unsupported VxFS version (%d)\n",
rsbp->vs_version);
goto out;
}
#ifdef DIAGNOSTIC
printk(KERN_DEBUG "vxfs: supported VxFS version (%d)\n", rsbp->vs_version);
printk(KERN_DEBUG "vxfs: blocksize: %d\n", rsbp->vs_bsize);
#endif
sbp->s_magic = rsbp->vs_magic;
sbp->s_fs_info = infp;
infp->vsi_raw = rsbp;
infp->vsi_bp = bp;
infp->vsi_oltext = rsbp->vs_oltext[0];
infp->vsi_oltsize = rsbp->vs_oltsize;
if (!sb_set_blocksize(sbp, rsbp->vs_bsize)) {
printk(KERN_WARNING "vxfs: unable to set final block size\n");
goto out;
}
if (vxfs_read_olt(sbp, bsize)) {
printk(KERN_WARNING "vxfs: unable to read olt\n");
goto out;
}
if (vxfs_read_fshead(sbp)) {
printk(KERN_WARNING "vxfs: unable to read fshead\n");
goto out;
}
sbp->s_op = &vxfs_super_ops;
root = vxfs_iget(sbp, VXFS_ROOT_INO);
if (IS_ERR(root)) {
ret = PTR_ERR(root);
goto out;
}
sbp->s_root = d_alloc_root(root);
if (!sbp->s_root) {
iput(root);
printk(KERN_WARNING "vxfs: unable to get root dentry.\n");
goto out_free_ilist;
}
return 0;
out_free_ilist:
vxfs_put_fake_inode(infp->vsi_fship);
vxfs_put_fake_inode(infp->vsi_ilist);
vxfs_put_fake_inode(infp->vsi_stilist);
out:
brelse(bp);
kfree(infp);
return ret;
}
