21 int ovl_setattr(struct mnt_idmap *idmap, struct dentry *dentry,  in ovl_setattr()  argument
25 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);  in ovl_setattr()
27 	struct dentry *upperdentry;  in ovl_setattr()
29 	err = setattr_prepare(&nop_mnt_idmap, dentry, attr);  in ovl_setattr()
39 		err = ovl_copy_up(dentry);  in ovl_setattr()
41 		err = ovl_copy_up_with_data(dentry);  in ovl_setattr()
45 		upperdentry = ovl_dentry_upper(dentry);  in ovl_setattr()
75 		err = ovl_want_write(dentry);  in ovl_setattr()
80 		with_ovl_creds(dentry->d_sb)  in ovl_setattr()
83 			ovl_copyattr(dentry->d_inode);  in ovl_setattr()
85 		ovl_drop_write(dentry);  in ovl_setattr()
95 static void ovl_map_dev_ino(struct dentry *dentry, struct kstat *stat, int fsid)  in ovl_map_dev_ino()  argument
97 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);  in ovl_map_dev_ino()
108 		stat->dev = dentry->d_sb->s_dev;  in ovl_map_dev_ino()
122 			stat->dev = dentry->d_sb->s_dev;  in ovl_map_dev_ino()
126 					    dentry, stat->ino, xinobits);  in ovl_map_dev_ino()
131 	if (S_ISDIR(dentry->d_inode->i_mode)) {  in ovl_map_dev_ino()
141 		stat->dev = dentry->d_sb->s_dev;  in ovl_map_dev_ino()
142 		stat->ino = dentry->d_inode->i_ino;  in ovl_map_dev_ino()
166 	struct dentry *dentry = path->dentry;  in ovl_getattr()  local
167 	struct super_block *sb = dentry->d_sb;  in ovl_getattr()
170 	struct inode *inode = d_inode(dentry);  in ovl_getattr()
176 	metacopy_blocks = ovl_is_metacopy_dentry(dentry);  in ovl_getattr()
178 	type = ovl_path_real(dentry, &realpath);  in ovl_getattr()
195 	if (!is_dir || ovl_same_dev(OVL_FS(dentry->d_sb))) {  in ovl_getattr()
197 			fsid = ovl_layer_lower(dentry)->fsid;  in ovl_getattr()
203 			ovl_path_lower(dentry, &realpath);  in ovl_getattr()
223 			if (ovl_test_flag(OVL_INDEX, d_inode(dentry)) ||  in ovl_getattr()
224 			    (!ovl_verify_lower(dentry->d_sb) &&  in ovl_getattr()
226 				fsid = ovl_layer_lower(dentry)->fsid;  in ovl_getattr()
238 			    realpath.dentry == ovl_dentry_lowerdata(dentry)) {  in ovl_getattr()
254 			ovl_path_lowerdata(dentry, &realpath);  in ovl_getattr()
255 			if (realpath.dentry) {  in ovl_getattr()
268 	ovl_map_dev_ino(dentry, stat, fsid);  in ovl_getattr()
284 	if (!is_dir && ovl_test_flag(OVL_INDEX, d_inode(dentry)))  in ovl_getattr()
285 		stat->nlink = dentry->d_inode->i_nlink;  in ovl_getattr()
324 static const char *ovl_get_link(struct dentry *dentry,  in ovl_get_link()  argument
328 	if (!dentry)  in ovl_get_link()
331 	with_ovl_creds(dentry->d_sb)  in ovl_get_link()
332 		return vfs_get_link(ovl_dentry_real(dentry), done);  in ovl_get_link()
394 	struct inode *realinode = d_inode(path->dentry);  in ovl_get_acl_path()
401 		real_acl = vfs_get_acl(idmap, path->dentry, acl_name);  in ovl_get_acl_path()
469 static int ovl_set_or_remove_acl(struct dentry *dentry, struct inode *inode,  in ovl_set_or_remove_acl()  argument
475 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);  in ovl_set_or_remove_acl()
476 	struct dentry *upperdentry = ovl_dentry_upper(dentry);  in ovl_set_or_remove_acl()
477 	struct dentry *realdentry = upperdentry ?: ovl_dentry_lower(dentry);  in ovl_set_or_remove_acl()
487 		ovl_path_lower(dentry, &realpath);  in ovl_set_or_remove_acl()
488 		with_ovl_creds(dentry->d_sb)  in ovl_set_or_remove_acl()
498 		err = ovl_copy_up(dentry);  in ovl_set_or_remove_acl()
502 		realdentry = ovl_dentry_upper(dentry);  in ovl_set_or_remove_acl()
505 	err = ovl_want_write(dentry);  in ovl_set_or_remove_acl()
509 	with_ovl_creds(dentry->d_sb) {  in ovl_set_or_remove_acl()
515 	ovl_drop_write(dentry);  in ovl_set_or_remove_acl()
523 int ovl_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,  in ovl_set_acl()  argument
527 	struct inode *inode = d_inode(dentry);  in ovl_set_acl()
528 	struct dentry *workdir = ovl_workdir(dentry);  in ovl_set_acl()
549 		err = ovl_setattr(&nop_mnt_idmap, dentry, &iattr);  in ovl_set_acl()
554 	return ovl_set_or_remove_acl(dentry, inode, acl, type);  in ovl_set_acl()
564 			.dentry = ovl_upperdentry_dereference(OVL_I(inode)),  in ovl_update_time()
567 		if (upperpath.dentry) {  in ovl_update_time()
570 					      inode_get_atime(d_inode(upperpath.dentry)));  in ovl_update_time()
631 	return vfs_fileattr_set(mnt_idmap(realpath->mnt), realpath->dentry, fa);  in ovl_real_fileattr_set()
635 		     struct dentry *dentry, struct file_kattr *fa)  in ovl_fileattr_set()  argument
637 	struct inode *inode = d_inode(dentry);  in ovl_fileattr_set()
642 	err = ovl_copy_up(dentry);  in ovl_fileattr_set()
644 		ovl_path_real(dentry, &upperpath);  in ovl_fileattr_set()
646 		err = ovl_want_write(dentry);  in ovl_fileattr_set()
658 			err = ovl_set_protattr(inode, upperpath.dentry, fa);  in ovl_fileattr_set()
662 		ovl_drop_write(dentry);  in ovl_fileattr_set()
705 	err = vfs_fileattr_get(realpath->dentry, fa);  in ovl_real_fileattr_get()
711 int ovl_fileattr_get(struct dentry *dentry, struct file_kattr *fa)  in ovl_fileattr_get()  argument
713 	struct inode *inode = d_inode(dentry);  in ovl_fileattr_get()
717 	ovl_path_real(dentry, &realpath);  in ovl_fileattr_get()
954 static int ovl_set_nlink_common(struct dentry *dentry,  in ovl_set_nlink_common()  argument
955 				struct dentry *realdentry, const char *format)  in ovl_set_nlink_common()
957 	struct inode *inode = d_inode(dentry);  in ovl_set_nlink_common()
968 	return ovl_setxattr(OVL_FS(inode->i_sb), ovl_dentry_upper(dentry),  in ovl_set_nlink_common()
972 int ovl_set_nlink_upper(struct dentry *dentry)  in ovl_set_nlink_upper()  argument
974 	return ovl_set_nlink_common(dentry, ovl_dentry_upper(dentry), "U%+i");  in ovl_set_nlink_upper()
977 int ovl_set_nlink_lower(struct dentry *dentry)  in ovl_set_nlink_lower()  argument
979 	return ovl_set_nlink_common(dentry, ovl_dentry_lower(dentry), "L%+i");  in ovl_set_nlink_lower()
982 unsigned int ovl_get_nlink(struct ovl_fs *ofs, struct dentry *lowerdentry,  in ovl_get_nlink()
983 			   struct dentry *upperdentry,  in ovl_get_nlink()
1044 static bool ovl_verify_inode(struct inode *inode, struct dentry *lowerdentry,  in ovl_verify_inode()
1045 			     struct dentry *upperdentry, bool strict)  in ovl_verify_inode()
1082 struct inode *ovl_lookup_inode(struct super_block *sb, struct dentry *real,  in ovl_lookup_inode()
1100 bool ovl_lookup_trap_inode(struct super_block *sb, struct dentry *dir)  in ovl_lookup_trap_inode()
1122 struct inode *ovl_get_trap_inode(struct super_block *sb, struct dentry *dir)  in ovl_get_trap_inode()
1151 static bool ovl_hash_bylower(struct super_block *sb, struct dentry *upper,  in ovl_hash_bylower()
1152 			     struct dentry *lower, bool index)  in ovl_hash_bylower()
1194 	struct dentry *upperdentry = oip->upperdentry;  in ovl_get_inode()
1198 	struct dentry *lowerdentry = lowerpath ? lowerpath->dentry : NULL;  in ovl_get_inode()
1200 		.dentry = upperdentry ?: lowerdentry,  in ovl_get_inode()