25 static int lock_parent(struct dentry *dentry,  in lock_parent()  argument
26 		       struct dentry **lower_dentry,  in lock_parent()
29 	struct dentry *lower_dir_dentry;  in lock_parent()
31 	lower_dir_dentry = ecryptfs_dentry_to_lower(dentry->d_parent);  in lock_parent()
33 	*lower_dentry = ecryptfs_dentry_to_lower(dentry);  in lock_parent()
123 static int ecryptfs_interpose(struct dentry *lower_dentry,  in ecryptfs_interpose()
124 			      struct dentry *dentry, struct super_block *sb)  in ecryptfs_interpose()  argument
130 	d_instantiate(dentry, inode);  in ecryptfs_interpose()
135 static int ecryptfs_do_unlink(struct inode *dir, struct dentry *dentry,  in ecryptfs_do_unlink()  argument
138 	struct dentry *lower_dentry;  in ecryptfs_do_unlink()
142 	rc = lock_parent(dentry, &lower_dentry, &lower_dir);  in ecryptfs_do_unlink()
162 		d_drop(dentry);  in ecryptfs_do_unlink()
180 		   struct dentry *ecryptfs_dentry, umode_t mode)  in ecryptfs_do_create()
183 	struct dentry *lower_dentry;  in ecryptfs_do_create()
218 int ecryptfs_initialize_file(struct dentry *ecryptfs_dentry,  in ecryptfs_initialize_file()
263 		struct inode *directory_inode, struct dentry *ecryptfs_dentry,  in ecryptfs_create()
291 static int ecryptfs_i_size_read(struct dentry *dentry, struct inode *inode)  in ecryptfs_i_size_read()  argument
296 	rc = ecryptfs_get_lower_file(dentry, inode);  in ecryptfs_i_size_read()
301 			dentry, rc);  in ecryptfs_i_size_read()
313 		rc = ecryptfs_read_and_validate_xattr_region(dentry, inode);  in ecryptfs_i_size_read()
325 static struct dentry *ecryptfs_lookup_interpose(struct dentry *dentry,  in ecryptfs_lookup_interpose()  argument
326 				     struct dentry *lower_dentry)  in ecryptfs_lookup_interpose()
328 	struct path *path = ecryptfs_dentry_to_lower_path(dentry->d_parent);  in ecryptfs_lookup_interpose()
339 	fsstack_copy_attr_atime(d_inode(dentry->d_parent),  in ecryptfs_lookup_interpose()
340 				d_inode(path->dentry));  in ecryptfs_lookup_interpose()
343 	ecryptfs_set_dentry_private(dentry, dentry_info);  in ecryptfs_lookup_interpose()
345 	dentry_info->lower_path.dentry = lower_dentry;  in ecryptfs_lookup_interpose()
357 		d_add(dentry, NULL);  in ecryptfs_lookup_interpose()
360 	inode = __ecryptfs_get_inode(lower_inode, dentry->d_sb);  in ecryptfs_lookup_interpose()
367 		rc = ecryptfs_i_size_read(dentry, inode);  in ecryptfs_lookup_interpose()
376 	return d_splice_alias(inode, dentry);  in ecryptfs_lookup_interpose()
388 static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,  in ecryptfs_lookup()
389 				      struct dentry *ecryptfs_dentry,  in ecryptfs_lookup()
394 	struct dentry *lower_dir_dentry, *lower_dentry;  in ecryptfs_lookup()
397 	struct dentry *res;  in ecryptfs_lookup()
430 static int ecryptfs_link(struct dentry *old_dentry, struct inode *dir,  in ecryptfs_link()
431 			 struct dentry *new_dentry)  in ecryptfs_link()
433 	struct dentry *lower_old_dentry;  in ecryptfs_link()
434 	struct dentry *lower_new_dentry;  in ecryptfs_link()
460 static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry)  in ecryptfs_unlink()  argument
462 	return ecryptfs_do_unlink(dir, dentry, d_inode(dentry));  in ecryptfs_unlink()
466 			    struct inode *dir, struct dentry *dentry,  in ecryptfs_symlink()  argument
470 	struct dentry *lower_dentry;  in ecryptfs_symlink()
476 	rc = lock_parent(dentry, &lower_dentry, &lower_dir);  in ecryptfs_symlink()
492 	rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);  in ecryptfs_symlink()
499 	if (d_really_is_negative(dentry))  in ecryptfs_symlink()
500 		d_drop(dentry);  in ecryptfs_symlink()
505 			  struct dentry *dentry, umode_t mode)  in ecryptfs_mkdir()  argument
508 	struct dentry *lower_dentry;  in ecryptfs_mkdir()
511 	rc = lock_parent(dentry, &lower_dentry, &lower_dir);  in ecryptfs_mkdir()
517 	rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);  in ecryptfs_mkdir()
525 	if (d_really_is_negative(dentry))  in ecryptfs_mkdir()
526 		d_drop(dentry);  in ecryptfs_mkdir()
530 static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)  in ecryptfs_rmdir()  argument
532 	struct dentry *lower_dentry;  in ecryptfs_rmdir()
536 	rc = lock_parent(dentry, &lower_dentry, &lower_dir);  in ecryptfs_rmdir()
545 		clear_nlink(d_inode(dentry));  in ecryptfs_rmdir()
552 		d_drop(dentry);  in ecryptfs_rmdir()
558 	       struct dentry *dentry, umode_t mode, dev_t dev)  in ecryptfs_mknod()  argument
561 	struct dentry *lower_dentry;  in ecryptfs_mknod()
564 	rc = lock_parent(dentry, &lower_dentry, &lower_dir);  in ecryptfs_mknod()
570 	rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);  in ecryptfs_mknod()
577 	if (d_really_is_negative(dentry))  in ecryptfs_mknod()
578 		d_drop(dentry);  in ecryptfs_mknod()
584 		struct dentry *old_dentry, struct inode *new_dir,  in ecryptfs_rename()
585 		struct dentry *new_dentry, unsigned int flags)  in ecryptfs_rename()
588 	struct dentry *lower_old_dentry;  in ecryptfs_rename()
589 	struct dentry *lower_new_dentry;  in ecryptfs_rename()
590 	struct dentry *lower_old_dir_dentry;  in ecryptfs_rename()
591 	struct dentry *lower_new_dir_dentry;  in ecryptfs_rename()
592 	struct dentry *trap;  in ecryptfs_rename()
646 static char *ecryptfs_readlink_lower(struct dentry *dentry, size_t *bufsiz)  in ecryptfs_readlink_lower()  argument
649 	struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);  in ecryptfs_readlink_lower()
658 	rc = ecryptfs_decode_and_decrypt_filename(&buf, bufsiz, dentry->d_sb,  in ecryptfs_readlink_lower()
667 static const char *ecryptfs_get_link(struct dentry *dentry,  in ecryptfs_get_link()  argument
674 	if (!dentry)  in ecryptfs_get_link()
677 	buf = ecryptfs_readlink_lower(dentry, &len);  in ecryptfs_get_link()
680 	fsstack_copy_attr_atime(d_inode(dentry),  in ecryptfs_get_link()
681 				d_inode(ecryptfs_dentry_to_lower(dentry)));  in ecryptfs_get_link()
732 static int truncate_upper(struct dentry *dentry, struct iattr *ia,  in truncate_upper()  argument
736 	struct inode *inode = d_inode(dentry);  in truncate_upper()
746 	rc = ecryptfs_get_lower_file(dentry, inode);  in truncate_upper()
749 	crypt_stat = &ecryptfs_inode_to_private(d_inode(dentry))->crypt_stat;  in truncate_upper()
850 int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)  in ecryptfs_truncate()  argument
856 	rc = ecryptfs_inode_newsize_ok(d_inode(dentry), new_length);  in ecryptfs_truncate()
860 	rc = truncate_upper(dentry, &ia, &lower_ia);  in ecryptfs_truncate()
862 		struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);  in ecryptfs_truncate()
894 			    struct dentry *dentry, struct iattr *ia)  in ecryptfs_setattr()  argument
897 	struct dentry *lower_dentry;  in ecryptfs_setattr()
903 	crypt_stat = &ecryptfs_inode_to_private(d_inode(dentry))->crypt_stat;  in ecryptfs_setattr()
909 	inode = d_inode(dentry);  in ecryptfs_setattr()
911 	lower_dentry = ecryptfs_dentry_to_lower(dentry);  in ecryptfs_setattr()
913 	if (d_is_dir(dentry))  in ecryptfs_setattr()
915 	else if (d_is_reg(dentry)  in ecryptfs_setattr()
921 			dentry->d_sb)->mount_crypt_stat;  in ecryptfs_setattr()
922 		rc = ecryptfs_get_lower_file(dentry, inode);  in ecryptfs_setattr()
927 		rc = ecryptfs_read_metadata(dentry);  in ecryptfs_setattr()
948 	rc = setattr_prepare(&init_user_ns, dentry, ia);  in ecryptfs_setattr()
961 		rc = truncate_upper(dentry, ia, &lower_ia);  in ecryptfs_setattr()
985 	struct dentry *dentry = path->dentry;  in ecryptfs_getattr_link()  local
990 						dentry->d_sb)->mount_crypt_stat;  in ecryptfs_getattr_link()
991 	generic_fillattr(&init_user_ns, d_inode(dentry), stat);  in ecryptfs_getattr_link()
996 		target = ecryptfs_readlink_lower(dentry, &targetsiz);  in ecryptfs_getattr_link()
1011 	struct dentry *dentry = path->dentry;  in ecryptfs_getattr()  local
1015 	rc = vfs_getattr(ecryptfs_dentry_to_lower_path(dentry), &lower_stat,  in ecryptfs_getattr()
1018 		fsstack_copy_attr_all(d_inode(dentry),  in ecryptfs_getattr()
1019 				      ecryptfs_inode_to_lower(d_inode(dentry)));  in ecryptfs_getattr()
1020 		generic_fillattr(&init_user_ns, d_inode(dentry), stat);  in ecryptfs_getattr()
1027 ecryptfs_setxattr(struct dentry *dentry, struct inode *inode,  in ecryptfs_setxattr()  argument
1032 	struct dentry *lower_dentry;  in ecryptfs_setxattr()
1035 	lower_dentry = ecryptfs_dentry_to_lower(dentry);  in ecryptfs_setxattr()
1051 ecryptfs_getxattr_lower(struct dentry *lower_dentry, struct inode *lower_inode,  in ecryptfs_getxattr_lower()
1068 ecryptfs_getxattr(struct dentry *dentry, struct inode *inode,  in ecryptfs_getxattr()  argument
1071 	return ecryptfs_getxattr_lower(ecryptfs_dentry_to_lower(dentry),  in ecryptfs_getxattr()
1077 ecryptfs_listxattr(struct dentry *dentry, char *list, size_t size)  in ecryptfs_listxattr()  argument
1080 	struct dentry *lower_dentry;  in ecryptfs_listxattr()
1082 	lower_dentry = ecryptfs_dentry_to_lower(dentry);  in ecryptfs_listxattr()
1094 static int ecryptfs_removexattr(struct dentry *dentry, struct inode *inode,  in ecryptfs_removexattr()  argument
1098 	struct dentry *lower_dentry;  in ecryptfs_removexattr()
1101 	lower_dentry = ecryptfs_dentry_to_lower(dentry);  in ecryptfs_removexattr()
1114 static int ecryptfs_fileattr_get(struct dentry *dentry, struct fileattr *fa)  in ecryptfs_fileattr_get()  argument
1116 	return vfs_fileattr_get(ecryptfs_dentry_to_lower(dentry), fa);  in ecryptfs_fileattr_get()
1120 				 struct dentry *dentry, struct fileattr *fa)  in ecryptfs_fileattr_set()  argument
1122 	struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);  in ecryptfs_fileattr_set()
1126 	fsstack_copy_attr_all(d_inode(dentry), d_inode(lower_dentry));  in ecryptfs_fileattr_set()
1166 			      struct dentry *dentry, struct inode *inode,  in ecryptfs_xattr_get()  argument
1169 	return ecryptfs_getxattr(dentry, inode, name, buffer, size);  in ecryptfs_xattr_get()
1174 			      struct dentry *dentry, struct inode *inode,  in ecryptfs_xattr_set()  argument
1179 		return ecryptfs_setxattr(dentry, inode, name, value, size, flags);  in ecryptfs_xattr_set()
1182 		return ecryptfs_removexattr(dentry, inode, name);  in ecryptfs_xattr_set()