C++ (Cpp) new_pts_fs_infoの例

コード例 #1

static int
devpts_fill_super(struct super_block *s, void *data, int silent)
{
	struct inode *inode;

	s->s_blocksize = 1024;
	s->s_blocksize_bits = 10;
	s->s_magic = DEVPTS_SUPER_MAGIC;
	s->s_op = &devpts_sops;
	s->s_time_gran = 1;

	s->s_fs_info = new_pts_fs_info();
	if (!s->s_fs_info)
		goto fail;

	inode = new_inode(s);
	if (!inode)
		goto fail;
	inode->i_ino = 1;
	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
	inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
	inode->i_op = &simple_dir_inode_operations;
	inode->i_fop = &simple_dir_operations;
	set_nlink(inode, 2);

	s->s_root = d_make_root(inode);
	if (s->s_root)
		return 0;

	printk(KERN_ERR "devpts: get root dentry failed\n");

fail:
	return -ENOMEM;
}

コード例 #2

ファイル: inode.c プロジェクト: guribe94/linux

static int
devpts_fill_super(struct super_block *s, void *data, int silent)
{
	struct inode *inode;
	int error;

	s->s_iflags &= ~SB_I_NODEV;
	s->s_blocksize = 1024;
	s->s_blocksize_bits = 10;
	s->s_magic = DEVPTS_SUPER_MAGIC;
	s->s_op = &devpts_sops;
	s->s_time_gran = 1;

	error = -ENOMEM;
	s->s_fs_info = new_pts_fs_info(s);
	if (!s->s_fs_info)
		goto fail;

	error = parse_mount_options(data, PARSE_MOUNT, &DEVPTS_SB(s)->mount_opts);
	if (error)
		goto fail;

	error = -ENOMEM;
	inode = new_inode(s);
	if (!inode)
		goto fail;
	inode->i_ino = 1;
	inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
	inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
	inode->i_op = &simple_dir_inode_operations;
	inode->i_fop = &simple_dir_operations;
	set_nlink(inode, 2);

	s->s_root = d_make_root(inode);
	if (!s->s_root) {
		pr_err("get root dentry failed\n");
		goto fail;
	}

	error = mknod_ptmx(s);
	if (error)
		goto fail_dput;

	return 0;
fail_dput:
	dput(s->s_root);
	s->s_root = NULL;
fail:
	return error;
}