59 static int inherit_flags(const struct inode *dir, umode_t mode)  in inherit_flags()  argument
62 	const struct ubifs_inode *ui = ubifs_inode(dir);  in inherit_flags()
64 	if (!S_ISDIR(dir->i_mode))  in inherit_flags()
88 struct inode *ubifs_new_inode(struct ubifs_info *c, struct inode *dir,  in ubifs_new_inode()  argument
96 	if (ubifs_crypt_is_encrypted(dir)) {  in ubifs_new_inode()
97 		err = fscrypt_get_encryption_info(dir);  in ubifs_new_inode()
103 		if (!fscrypt_has_encryption_key(dir))  in ubifs_new_inode()
122 	inode_init_owner(inode, dir, mode);  in ubifs_new_inode()
152 	ui->flags = inherit_flags(dir, mode);  in ubifs_new_inode()
186 		err = fscrypt_inherit_context(dir, inode, &encrypted, true);  in ubifs_new_inode()
211 static struct dentry *ubifs_lookup(struct inode *dir, struct dentry *dentry,  in ubifs_lookup()  argument
218 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_lookup()
221 	dbg_gen("'%pd' in dir ino %lu", dentry, dir->i_ino);  in ubifs_lookup()
223 	err = fscrypt_prepare_lookup(dir, dentry, flags);  in ubifs_lookup()
227 	err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &nm);  in ubifs_lookup()
245 		dent_key_init_hash(c, &key, dir->i_ino, nm.hash);  in ubifs_lookup()
248 		dent_key_init(c, &key, dir->i_ino, &nm);  in ubifs_lookup()
265 	inode = ubifs_iget(dir->i_sb, le64_to_cpu(dent->inum));  in ubifs_lookup()
278 	if (ubifs_crypt_is_encrypted(dir) &&  in ubifs_lookup()
280 	    !fscrypt_has_permitted_context(dir, inode)) {  in ubifs_lookup()
282 			   dir->i_ino, inode->i_ino);  in ubifs_lookup()
293 static int ubifs_create(struct inode *dir, struct dentry *dentry, umode_t mode,  in ubifs_create()  argument
297 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_create()
300 	struct ubifs_inode *dir_ui = ubifs_inode(dir);  in ubifs_create()
310 		dentry, mode, dir->i_ino);  in ubifs_create()
316 	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);  in ubifs_create()
322 	inode = ubifs_new_inode(c, dir, mode);  in ubifs_create()
328 	err = ubifs_init_security(dir, inode, &dentry->d_name);  in ubifs_create()
333 	dir->i_size += sz_change;  in ubifs_create()
334 	dir_ui->ui_size = dir->i_size;  in ubifs_create()
335 	dir->i_mtime = dir->i_ctime = inode->i_ctime;  in ubifs_create()
336 	err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);  in ubifs_create()
348 	dir->i_size -= sz_change;  in ubifs_create()
349 	dir_ui->ui_size = dir->i_size;  in ubifs_create()
362 static int do_tmpfile(struct inode *dir, struct dentry *dentry,  in do_tmpfile()  argument
366 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in do_tmpfile()
369 	struct ubifs_inode *ui, *dir_ui = ubifs_inode(dir);  in do_tmpfile()
379 		dentry, mode, dir->i_ino);  in do_tmpfile()
381 	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);  in do_tmpfile()
398 	inode = ubifs_new_inode(c, dir, mode);  in do_tmpfile()
410 	err = ubifs_init_security(dir, inode, &dentry->d_name);  in do_tmpfile()
430 	err = ubifs_jnl_update(c, dir, &nm, inode, 1, 0);  in do_tmpfile()
454 static int ubifs_tmpfile(struct inode *dir, struct dentry *dentry,  in ubifs_tmpfile()  argument
457 	return do_tmpfile(dir, dentry, mode, NULL);  in ubifs_tmpfile()
514 	struct inode *dir = file_inode(file);  in ubifs_readdir()  local
515 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_readdir()
516 	bool encrypted = ubifs_crypt_is_encrypted(dir);  in ubifs_readdir()
518 	dbg_gen("dir ino %lu, f_pos %#llx", dir->i_ino, ctx->pos);  in ubifs_readdir()
528 		err = fscrypt_get_encryption_info(dir);  in ubifs_readdir()
532 		err = fscrypt_fname_alloc_buffer(dir, UBIFS_MAX_NLEN, &fstr);  in ubifs_readdir()
567 		lowest_dent_key(c, &key, dir->i_ino);  in ubifs_readdir()
585 		dent_key_init_hash(c, &key, dir->i_ino, ctx->pos);  in ubifs_readdir()
601 			     ubifs_inode(dir)->creat_sqnum);  in ubifs_readdir()
609 			err = fscrypt_fname_disk_to_usr(dir, key_hash_flash(c,  in ubifs_readdir()
666 static int ubifs_dir_release(struct inode *dir, struct file *file)  in ubifs_dir_release()  argument
699 static int ubifs_link(struct dentry *old_dentry, struct inode *dir,  in ubifs_link()  argument
702 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_link()
705 	struct ubifs_inode *dir_ui = ubifs_inode(dir);  in ubifs_link()
718 		inode->i_nlink, dir->i_ino);  in ubifs_link()
719 	ubifs_assert(c, inode_is_locked(dir));  in ubifs_link()
722 	err = fscrypt_prepare_link(old_dentry, dir, dentry);  in ubifs_link()
726 	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);  in ubifs_link()
738 	lock_2_inodes(dir, inode);  in ubifs_link()
747 	dir->i_size += sz_change;  in ubifs_link()
748 	dir_ui->ui_size = dir->i_size;  in ubifs_link()
749 	dir->i_mtime = dir->i_ctime = inode->i_ctime;  in ubifs_link()
750 	err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);  in ubifs_link()
753 	unlock_2_inodes(dir, inode);  in ubifs_link()
761 	dir->i_size -= sz_change;  in ubifs_link()
762 	dir_ui->ui_size = dir->i_size;  in ubifs_link()
766 	unlock_2_inodes(dir, inode);  in ubifs_link()
774 static int ubifs_unlink(struct inode *dir, struct dentry *dentry)  in ubifs_unlink()  argument
776 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_unlink()
778 	struct ubifs_inode *dir_ui = ubifs_inode(dir);  in ubifs_unlink()
793 		inode->i_nlink, dir->i_ino);  in ubifs_unlink()
795 	if (ubifs_crypt_is_encrypted(dir)) {  in ubifs_unlink()
796 		err = fscrypt_get_encryption_info(dir);  in ubifs_unlink()
801 	err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &nm);  in ubifs_unlink()
807 	ubifs_assert(c, inode_is_locked(dir));  in ubifs_unlink()
820 	lock_2_inodes(dir, inode);  in ubifs_unlink()
821 	inode->i_ctime = current_time(dir);  in ubifs_unlink()
823 	dir->i_size -= sz_change;  in ubifs_unlink()
824 	dir_ui->ui_size = dir->i_size;  in ubifs_unlink()
825 	dir->i_mtime = dir->i_ctime = inode->i_ctime;  in ubifs_unlink()
826 	err = ubifs_jnl_update(c, dir, &nm, inode, 1, 0);  in ubifs_unlink()
829 	unlock_2_inodes(dir, inode);  in ubifs_unlink()
842 	dir->i_size += sz_change;  in ubifs_unlink()
843 	dir_ui->ui_size = dir->i_size;  in ubifs_unlink()
845 	unlock_2_inodes(dir, inode);  in ubifs_unlink()
861 int ubifs_check_dir_empty(struct inode *dir)  in ubifs_check_dir_empty()  argument
863 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_check_dir_empty()
869 	lowest_dent_key(c, &key, dir->i_ino);  in ubifs_check_dir_empty()
882 static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)  in ubifs_rmdir()  argument
884 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_rmdir()
887 	struct ubifs_inode *dir_ui = ubifs_inode(dir);  in ubifs_rmdir()
898 		inode->i_ino, dir->i_ino);  in ubifs_rmdir()
899 	ubifs_assert(c, inode_is_locked(dir));  in ubifs_rmdir()
905 	if (ubifs_crypt_is_encrypted(dir)) {  in ubifs_rmdir()
906 		err = fscrypt_get_encryption_info(dir);  in ubifs_rmdir()
911 	err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &nm);  in ubifs_rmdir()
924 	lock_2_inodes(dir, inode);  in ubifs_rmdir()
925 	inode->i_ctime = current_time(dir);  in ubifs_rmdir()
927 	drop_nlink(dir);  in ubifs_rmdir()
928 	dir->i_size -= sz_change;  in ubifs_rmdir()
929 	dir_ui->ui_size = dir->i_size;  in ubifs_rmdir()
930 	dir->i_mtime = dir->i_ctime = inode->i_ctime;  in ubifs_rmdir()
931 	err = ubifs_jnl_update(c, dir, &nm, inode, 1, 0);  in ubifs_rmdir()
934 	unlock_2_inodes(dir, inode);  in ubifs_rmdir()
947 	dir->i_size += sz_change;  in ubifs_rmdir()
948 	dir_ui->ui_size = dir->i_size;  in ubifs_rmdir()
949 	inc_nlink(dir);  in ubifs_rmdir()
951 	unlock_2_inodes(dir, inode);  in ubifs_rmdir()
959 static int ubifs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)  in ubifs_mkdir()  argument
962 	struct ubifs_inode *dir_ui = ubifs_inode(dir);  in ubifs_mkdir()
963 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_mkdir()
974 		dentry, mode, dir->i_ino);  in ubifs_mkdir()
980 	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);  in ubifs_mkdir()
986 	inode = ubifs_new_inode(c, dir, S_IFDIR | mode);  in ubifs_mkdir()
992 	err = ubifs_init_security(dir, inode, &dentry->d_name);  in ubifs_mkdir()
999 	inc_nlink(dir);  in ubifs_mkdir()
1000 	dir->i_size += sz_change;  in ubifs_mkdir()
1001 	dir_ui->ui_size = dir->i_size;  in ubifs_mkdir()
1002 	dir->i_mtime = dir->i_ctime = inode->i_ctime;  in ubifs_mkdir()
1003 	err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);  in ubifs_mkdir()
1016 	dir->i_size -= sz_change;  in ubifs_mkdir()
1017 	dir_ui->ui_size = dir->i_size;  in ubifs_mkdir()
1018 	drop_nlink(dir);  in ubifs_mkdir()
1030 static int ubifs_mknod(struct inode *dir, struct dentry *dentry,  in ubifs_mknod()  argument
1035 	struct ubifs_inode *dir_ui = ubifs_inode(dir);  in ubifs_mknod()
1036 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_mknod()
1049 	dbg_gen("dent '%pd' in dir ino %lu", dentry, dir->i_ino);  in ubifs_mknod()
1065 	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);  in ubifs_mknod()
1073 	inode = ubifs_new_inode(c, dir, mode);  in ubifs_mknod()
1086 	err = ubifs_init_security(dir, inode, &dentry->d_name);  in ubifs_mknod()
1091 	dir->i_size += sz_change;  in ubifs_mknod()
1092 	dir_ui->ui_size = dir->i_size;  in ubifs_mknod()
1093 	dir->i_mtime = dir->i_ctime = inode->i_ctime;  in ubifs_mknod()
1094 	err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);  in ubifs_mknod()
1106 	dir->i_size -= sz_change;  in ubifs_mknod()
1107 	dir_ui->ui_size = dir->i_size;  in ubifs_mknod()
1119 static int ubifs_symlink(struct inode *dir, struct dentry *dentry,  in ubifs_symlink()  argument
1124 	struct ubifs_inode *dir_ui = ubifs_inode(dir);  in ubifs_symlink()
1125 	struct ubifs_info *c = dir->i_sb->s_fs_info;  in ubifs_symlink()
1134 		symname, dir->i_ino);  in ubifs_symlink()
1136 	err = fscrypt_prepare_symlink(dir, symname, len, UBIFS_MAX_INO_DATA,  in ubifs_symlink()
1149 	err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &nm);  in ubifs_symlink()
1155 	inode = ubifs_new_inode(c, dir, S_IFLNK | S_IRWXUGO);  in ubifs_symlink()
1186 	err = ubifs_init_security(dir, inode, &dentry->d_name);  in ubifs_symlink()
1191 	dir->i_size += sz_change;  in ubifs_symlink()
1192 	dir_ui->ui_size = dir->i_size;  in ubifs_symlink()
1193 	dir->i_mtime = dir->i_ctime = inode->i_ctime;  in ubifs_symlink()
1194 	err = ubifs_jnl_update(c, dir, &nm, inode, 0, 0);  in ubifs_symlink()
1205 	dir->i_size -= sz_change;  in ubifs_symlink()
1206 	dir_ui->ui_size = dir->i_size;  in ubifs_symlink()
1632 static int ubifs_dir_open(struct inode *dir, struct file *file)  in ubifs_dir_open()  argument
1634 	if (ubifs_crypt_is_encrypted(dir))  in ubifs_dir_open()
1635 		return fscrypt_get_encryption_info(dir) ? -EACCES : 0;  in ubifs_dir_open()