int hmfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
{
struct inode *inode;
struct hmfs_sb_info *sbi = HMFS_SB(dir->i_sb);
void *data_blk;
size_t symlen = strlen(symname) + 1;
int ilock;
if (symlen > HMFS_MAX_SYMLINK_NAME_LEN)
return -ENAMETOOLONG;
ilock = mutex_lock_op(sbi);
inode = hmfs_make_dentry(dir, dentry, S_IFLNK | S_IRWXUGO);
if (IS_ERR(inode))
return PTR_ERR(inode);
inode->i_op = &hmfs_symlink_inode_operations;
inode->i_mapping->a_ops = &hmfs_dblock_aops;
data_blk = alloc_new_data_block(inode, 0);
if (IS_ERR(data_blk))
return PTR_ERR(data_blk);
hmfs_memcpy(data_blk, (void *)symname, symlen);
mutex_unlock_op(sbi, ilock);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
return 0;
}
static int hmfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
struct inode *inode;
inode = hmfs_make_dentry(dir, dentry, S_IFDIR | mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
inode->i_op = &hmfs_dir_inode_operations;
inode->i_fop = &hmfs_dir_operations;
inode->i_mapping->a_ops = &hmfs_aops_xip;
d_instantiate(dentry, inode);
unlock_new_inode(inode);
return 0;
}
static int hmfs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
bool excl)
{
struct inode *inode;
inode = hmfs_make_dentry(dir, dentry, mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
inode->i_op = &hmfs_file_inode_operations;
inode->i_fop = &hmfs_file_operations;
inode->i_mapping->a_ops = &hmfs_aops_xip;
d_instantiate(dentry, inode);
unlock_new_inode(inode);
return 0;
}
static int hmfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
dev_t rdev)
{
struct inode *inode;
if (!new_valid_dev(rdev))
return -EINVAL;
inode = hmfs_make_dentry(dir, dentry, mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
init_special_inode(inode, inode->i_mode, rdev);
inode->i_op = &hmfs_special_inode_operations;
d_instantiate(dentry, inode);
unlock_new_inode(inode);
return 0;
}
