17 int ovl_setattr(struct dentry *dentry, struct iattr *attr)  in ovl_setattr()  argument
21 	struct dentry *upperdentry;  in ovl_setattr()
24 	err = setattr_prepare(dentry, attr);  in ovl_setattr()
28 	err = ovl_want_write(dentry);  in ovl_setattr()
33 		struct inode *realinode = d_inode(ovl_dentry_real(dentry));  in ovl_setattr()
44 		err = ovl_copy_up(dentry);  in ovl_setattr()
46 		err = ovl_copy_up_with_data(dentry);  in ovl_setattr()
50 		upperdentry = ovl_dentry_upper(dentry);  in ovl_setattr()
81 		old_cred = ovl_override_creds(dentry->d_sb);  in ovl_setattr()
83 		ovl_revert_creds(dentry->d_sb, old_cred);  in ovl_setattr()
85 			ovl_copyattr(upperdentry->d_inode, dentry->d_inode);  in ovl_setattr()
92 	ovl_drop_write(dentry);  in ovl_setattr()
97 static int ovl_map_dev_ino(struct dentry *dentry, struct kstat *stat, int fsid)  in ovl_map_dev_ino()  argument
99 	bool samefs = ovl_same_fs(dentry->d_sb);  in ovl_map_dev_ino()
100 	unsigned int xinobits = ovl_xino_bits(dentry->d_sb);  in ovl_map_dev_ino()
109 		stat->dev = dentry->d_sb->s_dev;  in ovl_map_dev_ino()
123 			stat->dev = dentry->d_sb->s_dev;  in ovl_map_dev_ino()
125 		} else if (ovl_xino_warn(dentry->d_sb)) {  in ovl_map_dev_ino()
127 					    dentry, stat->ino, xinobits);  in ovl_map_dev_ino()
132 	if (S_ISDIR(dentry->d_inode->i_mode)) {  in ovl_map_dev_ino()
142 		stat->dev = dentry->d_sb->s_dev;  in ovl_map_dev_ino()
143 		stat->ino = dentry->d_inode->i_ino;  in ovl_map_dev_ino()
151 		stat->dev = OVL_FS(dentry->d_sb)->fs[fsid].pseudo_dev;  in ovl_map_dev_ino()
160 	struct dentry *dentry = path->dentry;  in ovl_getattr()  local
164 	bool is_dir = S_ISDIR(dentry->d_inode->i_mode);  in ovl_getattr()
169 	metacopy_blocks = ovl_is_metacopy_dentry(dentry);  in ovl_getattr()
171 	type = ovl_path_real(dentry, &realpath);  in ovl_getattr()
172 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_getattr()
186 	if (!is_dir || ovl_same_dev(dentry->d_sb)) {  in ovl_getattr()
188 			fsid = ovl_layer_lower(dentry)->fsid;  in ovl_getattr()
194 			ovl_path_lower(dentry, &realpath);  in ovl_getattr()
215 			if (ovl_test_flag(OVL_INDEX, d_inode(dentry)) ||  in ovl_getattr()
216 			    (!ovl_verify_lower(dentry->d_sb) &&  in ovl_getattr()
218 				fsid = ovl_layer_lower(dentry)->fsid;  in ovl_getattr()
230 			    realpath.dentry == ovl_dentry_lowerdata(dentry)) {  in ovl_getattr()
244 			ovl_path_lowerdata(dentry, &realpath);  in ovl_getattr()
253 	err = ovl_map_dev_ino(dentry, stat, fsid);  in ovl_getattr()
271 	if (!is_dir && ovl_test_flag(OVL_INDEX, d_inode(dentry)))  in ovl_getattr()
272 		stat->nlink = dentry->d_inode->i_nlink;  in ovl_getattr()
275 	ovl_revert_creds(dentry->d_sb, old_cred);  in ovl_getattr()
314 static const char *ovl_get_link(struct dentry *dentry,  in ovl_get_link()  argument
321 	if (!dentry)  in ovl_get_link()
324 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_get_link()
325 	p = vfs_get_link(ovl_dentry_real(dentry), done);  in ovl_get_link()
326 	ovl_revert_creds(dentry->d_sb, old_cred);  in ovl_get_link()
336 int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char *name,  in ovl_xattr_set()  argument
340 	struct dentry *upperdentry = ovl_i_dentry_upper(inode);  in ovl_xattr_set()
341 	struct dentry *realdentry = upperdentry ?: ovl_dentry_lower(dentry);  in ovl_xattr_set()
344 	err = ovl_want_write(dentry);  in ovl_xattr_set()
349 		old_cred = ovl_override_creds(dentry->d_sb);  in ovl_xattr_set()
357 		err = ovl_copy_up(dentry);  in ovl_xattr_set()
361 		realdentry = ovl_dentry_upper(dentry);  in ovl_xattr_set()
364 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_xattr_set()
371 	ovl_revert_creds(dentry->d_sb, old_cred);  in ovl_xattr_set()
377 	ovl_drop_write(dentry);  in ovl_xattr_set()
382 int ovl_xattr_get(struct dentry *dentry, struct inode *inode, const char *name,  in ovl_xattr_get()  argument
387 	struct dentry *realdentry =  in ovl_xattr_get()
388 		ovl_i_dentry_upper(inode) ?: ovl_dentry_lower(dentry);  in ovl_xattr_get()
390 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_xattr_get()
393 	ovl_revert_creds(dentry->d_sb, old_cred);  in ovl_xattr_get()
411 ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)  in ovl_listxattr()  argument
413 	struct dentry *realdentry = ovl_dentry_real(dentry);  in ovl_listxattr()
419 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_listxattr()
421 	ovl_revert_creds(dentry->d_sb, old_cred);  in ovl_listxattr()
434 		if (!ovl_can_list(dentry->d_sb, s)) {  in ovl_listxattr()
467 			.dentry = ovl_upperdentry_dereference(OVL_I(inode)),  in ovl_update_time()
470 		if (upperpath.dentry) {  in ovl_update_time()
472 			inode->i_atime = d_inode(upperpath.dentry)->i_atime;  in ovl_update_time()
640 	if (oip->lowerpath && oip->lowerpath->dentry)  in ovl_inode_init()
641 		OVL_I(inode)->lower = igrab(d_inode(oip->lowerpath->dentry));  in ovl_inode_init()
717 static int ovl_set_nlink_common(struct dentry *dentry,  in ovl_set_nlink_common()  argument
718 				struct dentry *realdentry, const char *format)  in ovl_set_nlink_common()
720 	struct inode *inode = d_inode(dentry);  in ovl_set_nlink_common()
731 	return ovl_do_setxattr(OVL_FS(inode->i_sb), ovl_dentry_upper(dentry),  in ovl_set_nlink_common()
735 int ovl_set_nlink_upper(struct dentry *dentry)  in ovl_set_nlink_upper()  argument
737 	return ovl_set_nlink_common(dentry, ovl_dentry_upper(dentry), "U%+i");  in ovl_set_nlink_upper()
740 int ovl_set_nlink_lower(struct dentry *dentry)  in ovl_set_nlink_lower()  argument
742 	return ovl_set_nlink_common(dentry, ovl_dentry_lower(dentry), "L%+i");  in ovl_set_nlink_lower()
745 unsigned int ovl_get_nlink(struct ovl_fs *ofs, struct dentry *lowerdentry,  in ovl_get_nlink()
746 			   struct dentry *upperdentry,  in ovl_get_nlink()
807 static bool ovl_verify_inode(struct inode *inode, struct dentry *lowerdentry,  in ovl_verify_inode()
808 			     struct dentry *upperdentry, bool strict)  in ovl_verify_inode()
845 struct inode *ovl_lookup_inode(struct super_block *sb, struct dentry *real,  in ovl_lookup_inode()
863 bool ovl_lookup_trap_inode(struct super_block *sb, struct dentry *dir)  in ovl_lookup_trap_inode()
885 struct inode *ovl_get_trap_inode(struct super_block *sb, struct dentry *dir)  in ovl_get_trap_inode()
914 static bool ovl_hash_bylower(struct super_block *sb, struct dentry *upper,  in ovl_hash_bylower()
915 			     struct dentry *lower, bool index)  in ovl_hash_bylower()
957 	struct dentry *upperdentry = oip->upperdentry;  in ovl_get_inode()
961 	struct dentry *lowerdentry = lowerpath ? lowerpath->dentry : NULL;  in ovl_get_inode()