void jfs_read_inode(struct inode *inode)
{
if (diRead(inode)) {
make_bad_inode(inode);
return;
}
if (S_ISREG(inode->i_mode)) {
inode->i_op = &jfs_file_inode_operations;
inode->i_fop = &jfs_file_operations;
inode->i_mapping->a_ops = &jfs_aops;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &jfs_dir_inode_operations;
inode->i_fop = &jfs_dir_operations;
inode->i_mapping->a_ops = &jfs_aops;
mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
} else if (S_ISLNK(inode->i_mode)) {
if (inode->i_size >= IDATASIZE) {
inode->i_op = &page_symlink_inode_operations;
inode->i_mapping->a_ops = &jfs_aops;
} else
inode->i_op = &jfs_symlink_inode_operations;
} else {
inode->i_op = &jfs_file_inode_operations;
init_special_inode(inode, inode->i_mode, inode->i_rdev);
}
}
struct inode *jfs_iget(struct super_block *sb, unsigned long ino)
{
struct inode *inode;
int ret;
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (!(inode->i_state & I_NEW))
return inode;
ret = diRead(inode);
if (ret < 0) {
iget_failed(inode);
return ERR_PTR(ret);
}
if (S_ISREG(inode->i_mode)) {
inode->i_op = &jfs_file_inode_operations;
inode->i_fop = &jfs_file_operations;
inode->i_mapping->a_ops = &jfs_aops;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &jfs_dir_inode_operations;
inode->i_fop = &jfs_dir_operations;
} else if (S_ISLNK(inode->i_mode)) {
if (inode->i_size >= IDATASIZE) {
inode->i_op = &page_symlink_inode_operations;
inode_nohighmem(inode);
inode->i_mapping->a_ops = &jfs_aops;
} else {
inode->i_op = &jfs_fast_symlink_inode_operations;
inode->i_link = JFS_IP(inode)->i_inline;
/*
* The inline data should be null-terminated, but
* don't let on-disk corruption crash the kernel
*/
inode->i_link[inode->i_size] = '\0';
}
} else {
inode->i_op = &jfs_file_inode_operations;
init_special_inode(inode, inode->i_mode, inode->i_rdev);
}
unlock_new_inode(inode);
return inode;
}
void jfs_read_inode(struct inode *inode)
{
int rc;
rc = alloc_jfs_inode(inode);
if (rc) {
jfs_warn("In jfs_read_inode, alloc_jfs_inode failed");
goto bad_inode;
}
jfs_info("In jfs_read_inode, inode = 0x%p", inode);
if (diRead(inode))
goto bad_inode_free;
if (S_ISREG(inode->i_mode)) {
inode->i_op = &jfs_file_inode_operations;
inode->i_fop = &jfs_file_operations;
inode->i_mapping->a_ops = &jfs_aops;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &jfs_dir_inode_operations;
inode->i_fop = &jfs_dir_operations;
inode->i_mapping->a_ops = &jfs_aops;
inode->i_mapping->gfp_mask = GFP_NOFS;
} else if (S_ISLNK(inode->i_mode)) {
if (inode->i_size >= IDATASIZE) {
inode->i_op = &page_symlink_inode_operations;
inode->i_mapping->a_ops = &jfs_aops;
} else
inode->i_op = &jfs_symlink_inode_operations;
} else {
inode->i_op = &jfs_file_inode_operations;
init_special_inode(inode, inode->i_mode,
kdev_t_to_nr(inode->i_rdev));
}
return;
bad_inode_free:
free_jfs_inode(inode);
bad_inode:
make_bad_inode(inode);
}
int main(int argc, char *argv[])
{
int v;
v = diRead(&ip);
return 0;
}
