18 int ovl_want_write(struct dentry *dentry)  in ovl_want_write()  argument
20 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_want_write()
24 void ovl_drop_write(struct dentry *dentry)  in ovl_drop_write()  argument
26 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_drop_write()
30 struct dentry *ovl_workdir(struct dentry *dentry)  in ovl_workdir()  argument
32 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_workdir()
59 struct dentry *ovl_indexdir(struct super_block *sb)  in ovl_indexdir()
93 bool ovl_dentry_remote(struct dentry *dentry)  in ovl_dentry_remote()  argument
95 	return dentry->d_flags &  in ovl_dentry_remote()
99 void ovl_dentry_update_reval(struct dentry *dentry, struct dentry *upperdentry,  in ovl_dentry_update_reval()  argument
102 	struct ovl_entry *oe = OVL_E(dentry);  in ovl_dentry_update_reval()
108 		flags |= oe->lowerstack[i].dentry->d_flags;  in ovl_dentry_update_reval()
110 	spin_lock(&dentry->d_lock);  in ovl_dentry_update_reval()
111 	dentry->d_flags &= ~mask;  in ovl_dentry_update_reval()
112 	dentry->d_flags |= flags & mask;  in ovl_dentry_update_reval()
113 	spin_unlock(&dentry->d_lock);  in ovl_dentry_update_reval()
116 bool ovl_dentry_weird(struct dentry *dentry)  in ovl_dentry_weird()  argument
118 	return dentry->d_flags & (DCACHE_NEED_AUTOMOUNT |  in ovl_dentry_weird()
124 enum ovl_path_type ovl_path_type(struct dentry *dentry)  in ovl_path_type()  argument
126 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_path_type()
129 	if (ovl_dentry_upper(dentry)) {  in ovl_path_type()
136 			if (ovl_test_flag(OVL_CONST_INO, d_inode(dentry)))  in ovl_path_type()
138 			if (d_is_dir(dentry) ||  in ovl_path_type()
139 			    !ovl_has_upperdata(d_inode(dentry)))  in ovl_path_type()
149 void ovl_path_upper(struct dentry *dentry, struct path *path)  in ovl_path_upper()  argument
151 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_path_upper()
154 	path->dentry = ovl_dentry_upper(dentry);  in ovl_path_upper()
157 void ovl_path_lower(struct dentry *dentry, struct path *path)  in ovl_path_lower()  argument
159 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_path_lower()
163 		path->dentry = oe->lowerstack[0].dentry;  in ovl_path_lower()
169 void ovl_path_lowerdata(struct dentry *dentry, struct path *path)  in ovl_path_lowerdata()  argument
171 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_path_lowerdata()
175 		path->dentry = oe->lowerstack[oe->numlower - 1].dentry;  in ovl_path_lowerdata()
181 enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path)  in ovl_path_real()  argument
183 	enum ovl_path_type type = ovl_path_type(dentry);  in ovl_path_real()
186 		ovl_path_lower(dentry, path);  in ovl_path_real()
188 		ovl_path_upper(dentry, path);  in ovl_path_real()
193 struct dentry *ovl_dentry_upper(struct dentry *dentry)  in ovl_dentry_upper()  argument
195 	return ovl_upperdentry_dereference(OVL_I(d_inode(dentry)));  in ovl_dentry_upper()
198 struct dentry *ovl_dentry_lower(struct dentry *dentry)  in ovl_dentry_lower()  argument
200 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_lower()
202 	return oe->numlower ? oe->lowerstack[0].dentry : NULL;  in ovl_dentry_lower()
205 const struct ovl_layer *ovl_layer_lower(struct dentry *dentry)  in ovl_layer_lower()  argument
207 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_layer_lower()
218 struct dentry *ovl_dentry_lowerdata(struct dentry *dentry)  in ovl_dentry_lowerdata()  argument
220 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_lowerdata()
222 	return oe->numlower ? oe->lowerstack[oe->numlower - 1].dentry : NULL;  in ovl_dentry_lowerdata()
225 struct dentry *ovl_dentry_real(struct dentry *dentry)  in ovl_dentry_real()  argument
227 	return ovl_dentry_upper(dentry) ?: ovl_dentry_lower(dentry);  in ovl_dentry_real()
230 struct dentry *ovl_i_dentry_upper(struct inode *inode)  in ovl_i_dentry_upper()
237 	struct dentry *upperdentry = ovl_i_dentry_upper(inode);  in ovl_inode_upper()
283 void ovl_dentry_set_flag(unsigned long flag, struct dentry *dentry)  in ovl_dentry_set_flag()  argument
285 	set_bit(flag, &OVL_E(dentry)->flags);  in ovl_dentry_set_flag()
288 void ovl_dentry_clear_flag(unsigned long flag, struct dentry *dentry)  in ovl_dentry_clear_flag()  argument
290 	clear_bit(flag, &OVL_E(dentry)->flags);  in ovl_dentry_clear_flag()
293 bool ovl_dentry_test_flag(unsigned long flag, struct dentry *dentry)  in ovl_dentry_test_flag()  argument
295 	return test_bit(flag, &OVL_E(dentry)->flags);  in ovl_dentry_test_flag()
298 bool ovl_dentry_is_opaque(struct dentry *dentry)  in ovl_dentry_is_opaque()  argument
300 	return ovl_dentry_test_flag(OVL_E_OPAQUE, dentry);  in ovl_dentry_is_opaque()
303 bool ovl_dentry_is_whiteout(struct dentry *dentry)  in ovl_dentry_is_whiteout()  argument
305 	return !dentry->d_inode && ovl_dentry_is_opaque(dentry);  in ovl_dentry_is_whiteout()
308 void ovl_dentry_set_opaque(struct dentry *dentry)  in ovl_dentry_set_opaque()  argument
310 	ovl_dentry_set_flag(OVL_E_OPAQUE, dentry);  in ovl_dentry_set_opaque()
319 bool ovl_dentry_has_upper_alias(struct dentry *dentry)  in ovl_dentry_has_upper_alias()  argument
321 	return ovl_dentry_test_flag(OVL_E_UPPER_ALIAS, dentry);  in ovl_dentry_has_upper_alias()
324 void ovl_dentry_set_upper_alias(struct dentry *dentry)  in ovl_dentry_set_upper_alias()  argument
326 	ovl_dentry_set_flag(OVL_E_UPPER_ALIAS, dentry);  in ovl_dentry_set_upper_alias()
369 bool ovl_dentry_needs_data_copy_up_locked(struct dentry *dentry, int flags)  in ovl_dentry_needs_data_copy_up_locked()  argument
374 	return !ovl_test_flag(OVL_UPPERDATA, d_inode(dentry));  in ovl_dentry_needs_data_copy_up_locked()
377 bool ovl_dentry_needs_data_copy_up(struct dentry *dentry, int flags)  in ovl_dentry_needs_data_copy_up()  argument
382 	return !ovl_has_upperdata(d_inode(dentry));  in ovl_dentry_needs_data_copy_up()
392 const char *ovl_dentry_get_redirect(struct dentry *dentry)  in ovl_dentry_get_redirect()  argument
394 	return OVL_I(d_inode(dentry))->redirect;  in ovl_dentry_get_redirect()
397 void ovl_dentry_set_redirect(struct dentry *dentry, const char *redirect)  in ovl_dentry_set_redirect()  argument
399 	struct ovl_inode *oi = OVL_I(d_inode(dentry));  in ovl_dentry_set_redirect()
405 void ovl_inode_update(struct inode *inode, struct dentry *upperdentry)  in ovl_inode_update()
422 static void ovl_dentry_version_inc(struct dentry *dentry, bool impurity)  in ovl_dentry_version_inc()  argument
424 	struct inode *inode = d_inode(dentry);  in ovl_dentry_version_inc()
433 	if (OVL_TYPE_MERGE(ovl_path_type(dentry)) || impurity)  in ovl_dentry_version_inc()
437 void ovl_dir_modified(struct dentry *dentry, bool impurity)  in ovl_dir_modified()  argument
440 	ovl_copyattr(d_inode(ovl_dentry_upper(dentry)), d_inode(dentry));  in ovl_dir_modified()
442 	ovl_dentry_version_inc(dentry, impurity);  in ovl_dir_modified()
445 u64 ovl_dentry_version_get(struct dentry *dentry)  in ovl_dentry_version_get()  argument
447 	struct inode *inode = d_inode(dentry);  in ovl_dentry_version_get()
453 bool ovl_is_whiteout(struct dentry *dentry)  in ovl_is_whiteout()  argument
455 	struct inode *inode = dentry->d_inode;  in ovl_is_whiteout()
462 	struct inode *inode = d_inode(path->dentry);  in ovl_path_open()
491 static bool ovl_already_copied_up_locked(struct dentry *dentry, int flags)  in ovl_already_copied_up_locked()  argument
493 	bool disconnected = dentry->d_flags & DCACHE_DISCONNECTED;  in ovl_already_copied_up_locked()
495 	if (ovl_dentry_upper(dentry) &&  in ovl_already_copied_up_locked()
496 	    (ovl_dentry_has_upper_alias(dentry) || disconnected) &&  in ovl_already_copied_up_locked()
497 	    !ovl_dentry_needs_data_copy_up_locked(dentry, flags))  in ovl_already_copied_up_locked()
503 bool ovl_already_copied_up(struct dentry *dentry, int flags)  in ovl_already_copied_up()  argument
505 	bool disconnected = dentry->d_flags & DCACHE_DISCONNECTED;  in ovl_already_copied_up()
520 	if (ovl_dentry_upper(dentry) &&  in ovl_already_copied_up()
521 	    (ovl_dentry_has_upper_alias(dentry) || disconnected) &&  in ovl_already_copied_up()
522 	    !ovl_dentry_needs_data_copy_up(dentry, flags))  in ovl_already_copied_up()
528 int ovl_copy_up_start(struct dentry *dentry, int flags)  in ovl_copy_up_start()  argument
530 	struct inode *inode = d_inode(dentry);  in ovl_copy_up_start()
534 	if (!err && ovl_already_copied_up_locked(dentry, flags)) {  in ovl_copy_up_start()
542 void ovl_copy_up_end(struct dentry *dentry)  in ovl_copy_up_end()  argument
544 	ovl_inode_unlock(d_inode(dentry));  in ovl_copy_up_end()
547 bool ovl_check_origin_xattr(struct ovl_fs *ofs, struct dentry *dentry)  in ovl_check_origin_xattr()  argument
551 	res = ovl_do_getxattr(ofs, dentry, OVL_XATTR_ORIGIN, NULL, 0);  in ovl_check_origin_xattr()
560 bool ovl_check_dir_xattr(struct super_block *sb, struct dentry *dentry,  in ovl_check_dir_xattr()  argument
566 	if (!d_is_dir(dentry))  in ovl_check_dir_xattr()
569 	res = ovl_do_getxattr(OVL_FS(sb), dentry, ox, &val, 1);  in ovl_check_dir_xattr()
597 int ovl_check_setxattr(struct dentry *dentry, struct dentry *upperdentry,  in ovl_check_setxattr()  argument
602 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_check_setxattr()
618 int ovl_set_impure(struct dentry *dentry, struct dentry *upperdentry)  in ovl_set_impure()  argument
622 	if (ovl_test_flag(OVL_IMPURE, d_inode(dentry)))  in ovl_set_impure()
629 	err = ovl_check_setxattr(dentry, upperdentry, OVL_XATTR_IMPURE,  in ovl_set_impure()
632 		ovl_set_flag(OVL_IMPURE, d_inode(dentry));  in ovl_set_impure()
656 bool ovl_inuse_trylock(struct dentry *dentry)  in ovl_inuse_trylock()  argument
658 	struct inode *inode = d_inode(dentry);  in ovl_inuse_trylock()
671 void ovl_inuse_unlock(struct dentry *dentry)  in ovl_inuse_unlock()  argument
673 	if (dentry) {  in ovl_inuse_unlock()
674 		struct inode *inode = d_inode(dentry);  in ovl_inuse_unlock()
683 bool ovl_is_inuse(struct dentry *dentry)  in ovl_is_inuse()  argument
685 	struct inode *inode = d_inode(dentry);  in ovl_is_inuse()
698 bool ovl_need_index(struct dentry *dentry)  in ovl_need_index()  argument
700 	struct dentry *lower = ovl_dentry_lower(dentry);  in ovl_need_index()
702 	if (!lower || !ovl_indexdir(dentry->d_sb))  in ovl_need_index()
706 	if (ovl_index_all(dentry->d_sb))  in ovl_need_index()
717 static void ovl_cleanup_index(struct dentry *dentry)  in ovl_cleanup_index()  argument
719 	struct dentry *indexdir = ovl_indexdir(dentry->d_sb);  in ovl_cleanup_index()
721 	struct dentry *lowerdentry = ovl_dentry_lower(dentry);  in ovl_cleanup_index()
722 	struct dentry *upperdentry = ovl_dentry_upper(dentry);  in ovl_cleanup_index()
723 	struct dentry *index = NULL;  in ovl_cleanup_index()
745 		set_nlink(d_inode(dentry), inode->i_nlink - 1);  in ovl_cleanup_index()
746 		ovl_set_nlink_upper(dentry);  in ovl_cleanup_index()
755 	} else if (ovl_index_all(dentry->d_sb)) {  in ovl_cleanup_index()
757 		err = ovl_cleanup_and_whiteout(OVL_FS(dentry->d_sb),  in ovl_cleanup_index()
774 	pr_err("cleanup index of '%pd2' failed (%i)\n", dentry, err);  in ovl_cleanup_index()
782 int ovl_nlink_start(struct dentry *dentry)  in ovl_nlink_start()  argument
784 	struct inode *inode = d_inode(dentry);  in ovl_nlink_start()
805 	if (ovl_need_index(dentry) && !ovl_dentry_has_upper_alias(dentry)) {  in ovl_nlink_start()
806 		err = ovl_copy_up(dentry);  in ovl_nlink_start()
815 	if (d_is_dir(dentry) || !ovl_test_flag(OVL_INDEX, inode))  in ovl_nlink_start()
818 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_nlink_start()
825 	err = ovl_set_nlink_upper(dentry);  in ovl_nlink_start()
835 void ovl_nlink_end(struct dentry *dentry)  in ovl_nlink_end()  argument
837 	struct inode *inode = d_inode(dentry);  in ovl_nlink_end()
842 		old_cred = ovl_override_creds(dentry->d_sb);  in ovl_nlink_end()
843 		ovl_cleanup_index(dentry);  in ovl_nlink_end()
850 int ovl_lock_rename_workdir(struct dentry *workdir, struct dentry *upperdir)  in ovl_lock_rename_workdir()
870 int ovl_check_metacopy_xattr(struct ovl_fs *ofs, struct dentry *dentry)  in ovl_check_metacopy_xattr()  argument
875 	if (!S_ISREG(d_inode(dentry)->i_mode))  in ovl_check_metacopy_xattr()
878 	res = ovl_do_getxattr(ofs, dentry, OVL_XATTR_METACOPY, NULL, 0);  in ovl_check_metacopy_xattr()
891 bool ovl_is_metacopy_dentry(struct dentry *dentry)  in ovl_is_metacopy_dentry()  argument
893 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_is_metacopy_dentry()
895 	if (!d_is_reg(dentry))  in ovl_is_metacopy_dentry()
898 	if (ovl_dentry_upper(dentry)) {  in ovl_is_metacopy_dentry()
899 		if (!ovl_has_upperdata(d_inode(dentry)))  in ovl_is_metacopy_dentry()
907 char *ovl_get_redirect_xattr(struct ovl_fs *ofs, struct dentry *dentry,  in ovl_get_redirect_xattr()  argument
913 	res = ovl_do_getxattr(ofs, dentry, OVL_XATTR_REDIRECT, NULL, 0);  in ovl_get_redirect_xattr()
925 	res = ovl_do_getxattr(ofs, dentry, OVL_XATTR_REDIRECT, buf, res);  in ovl_get_redirect_xattr()