101 static struct inode *bpf_get_inode(struct super_block *sb,  in bpf_get_inode()
102 				   const struct inode *dir,  in bpf_get_inode()
105 	struct inode *inode;  in bpf_get_inode()  local
116 	inode = new_inode(sb);  in bpf_get_inode()
117 	if (!inode)  in bpf_get_inode()
120 	inode->i_ino = get_next_ino();  in bpf_get_inode()
121 	inode->i_atime = current_time(inode);  in bpf_get_inode()
122 	inode->i_mtime = inode->i_atime;  in bpf_get_inode()
123 	inode->i_ctime = inode->i_atime;  in bpf_get_inode()
125 	inode_init_owner(&init_user_ns, inode, dir, mode);  in bpf_get_inode()
127 	return inode;  in bpf_get_inode()
130 static int bpf_inode_type(const struct inode *inode, enum bpf_type *type)  in bpf_inode_type()  argument
133 	if (inode->i_op == &bpf_prog_iops)  in bpf_inode_type()
135 	else if (inode->i_op == &bpf_map_iops)  in bpf_inode_type()
137 	else if (inode->i_op == &bpf_link_iops)  in bpf_inode_type()
145 static void bpf_dentry_finalize(struct dentry *dentry, struct inode *inode,  in bpf_dentry_finalize()  argument
146 				struct inode *dir)  in bpf_dentry_finalize()
148 	d_instantiate(dentry, inode);  in bpf_dentry_finalize()
155 static int bpf_mkdir(struct user_namespace *mnt_userns, struct inode *dir,  in bpf_mkdir()
158 	struct inode *inode;  in bpf_mkdir()  local
160 	inode = bpf_get_inode(dir->i_sb, dir, mode | S_IFDIR);  in bpf_mkdir()
161 	if (IS_ERR(inode))  in bpf_mkdir()
162 		return PTR_ERR(inode);  in bpf_mkdir()
164 	inode->i_op = &bpf_dir_iops;  in bpf_mkdir()
165 	inode->i_fop = &simple_dir_operations;  in bpf_mkdir()
167 	inc_nlink(inode);  in bpf_mkdir()
170 	bpf_dentry_finalize(dentry, inode, dir);  in bpf_mkdir()
274 static int bpffs_map_open(struct inode *inode, struct file *file)  in bpffs_map_open()  argument
276 	struct bpf_map *map = inode->i_private;  in bpffs_map_open()
297 static int bpffs_map_release(struct inode *inode, struct file *file)  in bpffs_map_release()  argument
303 	return seq_release(inode, file);  in bpffs_map_release()
322 static int bpffs_obj_open(struct inode *inode, struct file *file)  in bpffs_obj_open()  argument
335 	struct inode *dir = dentry->d_parent->d_inode;  in bpf_mkobj_ops()
336 	struct inode *inode = bpf_get_inode(dir->i_sb, dir, mode);  in bpf_mkobj_ops()  local
337 	if (IS_ERR(inode))  in bpf_mkobj_ops()
338 		return PTR_ERR(inode);  in bpf_mkobj_ops()
340 	inode->i_op = iops;  in bpf_mkobj_ops()
341 	inode->i_fop = fops;  in bpf_mkobj_ops()
342 	inode->i_private = raw;  in bpf_mkobj_ops()
344 	bpf_dentry_finalize(dentry, inode, dir);  in bpf_mkobj_ops()
373 bpf_lookup(struct inode *dir, struct dentry *dentry, unsigned flags)  in bpf_lookup()
385 static int bpf_symlink(struct user_namespace *mnt_userns, struct inode *dir,  in bpf_symlink()
389 	struct inode *inode;  in bpf_symlink()  local
394 	inode = bpf_get_inode(dir->i_sb, dir, S_IRWXUGO | S_IFLNK);  in bpf_symlink()
395 	if (IS_ERR(inode)) {  in bpf_symlink()
397 		return PTR_ERR(inode);  in bpf_symlink()
400 	inode->i_op = &simple_symlink_inode_operations;  in bpf_symlink()
401 	inode->i_link = link;  in bpf_symlink()
403 	bpf_dentry_finalize(dentry, inode, dir);  in bpf_symlink()
442 	struct inode *dir;  in bpf_obj_do_pin()
501 	struct inode *inode;  in bpf_obj_do_get()  local
510 	inode = d_backing_inode(path.dentry);  in bpf_obj_do_get()
515 	ret = bpf_inode_type(inode, type);  in bpf_obj_do_get()
519 	raw = bpf_any_get(inode->i_private, *type);  in bpf_obj_do_get()
559 static struct bpf_prog *__get_prog_inode(struct inode *inode, enum bpf_prog_type type)  in __get_prog_inode()  argument
562 	int ret = inode_permission(&init_user_ns, inode, MAY_READ);  in __get_prog_inode()
566 	if (inode->i_op == &bpf_map_iops)  in __get_prog_inode()
568 	if (inode->i_op == &bpf_link_iops)  in __get_prog_inode()
570 	if (inode->i_op != &bpf_prog_iops)  in __get_prog_inode()
573 	prog = inode->i_private;  in __get_prog_inode()
613 static void bpf_free_inode(struct inode *inode)  in bpf_free_inode()  argument
617 	if (S_ISLNK(inode->i_mode))  in bpf_free_inode()
618 		kfree(inode->i_link);  in bpf_free_inode()
619 	if (!bpf_inode_type(inode, &type))  in bpf_free_inode()
620 		bpf_any_put(inode->i_private, type);  in bpf_free_inode()
621 	free_inode_nonrcu(inode);  in bpf_free_inode()
747 	struct inode *inode;  in bpf_fill_super()  local
756 	inode = sb->s_root->d_inode;  in bpf_fill_super()
757 	inode->i_op = &bpf_dir_iops;  in bpf_fill_super()
758 	inode->i_mode &= ~S_IALLUGO;  in bpf_fill_super()
760 	inode->i_mode |= S_ISVTX | opts->mode;  in bpf_fill_super()