46 int ovl_copy_xattr(struct super_block *sb, struct dentry *old,  in ovl_copy_xattr()
47 		   struct dentry *new)  in ovl_copy_xattr()
231 static int ovl_set_size(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_size()
241 static int ovl_set_timestamps(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_timestamps()
253 int ovl_set_attr(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_attr()
278 struct ovl_fh *ovl_encode_real_fh(struct dentry *real, bool is_upper)  in ovl_encode_real_fh()
331 int ovl_set_origin(struct dentry *dentry, struct dentry *lower,  in ovl_set_origin()  argument
332 		   struct dentry *upper)  in ovl_set_origin()
351 	err = ovl_check_setxattr(dentry, upper, OVL_XATTR_ORIGIN, fh->buf,  in ovl_set_origin()
359 static int ovl_set_upper_fh(struct ovl_fs *ofs, struct dentry *upper,  in ovl_set_upper_fh()
360 			    struct dentry *index)  in ovl_set_upper_fh()
380 static int ovl_create_index(struct dentry *dentry, struct dentry *origin,  in ovl_create_index()  argument
381 			    struct dentry *upper)  in ovl_create_index()
383 	struct dentry *indexdir = ovl_indexdir(dentry->d_sb);  in ovl_create_index()
385 	struct dentry *index = NULL;  in ovl_create_index()
386 	struct dentry *temp = NULL;  in ovl_create_index()
398 	if (WARN_ON(!d_is_dir(dentry)))  in ovl_create_index()
402 	if (WARN_ON(ovl_test_flag(OVL_INDEX, d_inode(dentry))))  in ovl_create_index()
414 	err = ovl_set_upper_fh(OVL_FS(dentry->d_sb), upper, temp);  in ovl_create_index()
435 	struct dentry *parent;
436 	struct dentry *dentry;  member
441 	struct dentry *destdir;
443 	struct dentry *workdir;
452 	struct dentry *upper;  in ovl_link_up()
453 	struct dentry *upperdir = ovl_dentry_upper(c->parent);  in ovl_link_up()
461 	err = ovl_set_nlink_lower(c->dentry);  in ovl_link_up()
466 	upper = lookup_one_len(c->dentry->d_name.name, upperdir,  in ovl_link_up()
467 			       c->dentry->d_name.len);  in ovl_link_up()
470 		err = ovl_do_link(ovl_dentry_upper(c->dentry), udir, upper);  in ovl_link_up()
476 			ovl_dentry_set_upper_alias(c->dentry);  in ovl_link_up()
483 	err = ovl_set_nlink_upper(c->dentry);  in ovl_link_up()
488 static int ovl_copy_up_inode(struct ovl_copy_up_ctx *c, struct dentry *temp)  in ovl_copy_up_inode()
490 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_inode()
500 		ovl_path_upper(c->dentry, &upperpath);  in ovl_copy_up_inode()
501 		if (WARN_ON(upperpath.dentry != NULL))  in ovl_copy_up_inode()
503 		upperpath.dentry = temp;  in ovl_copy_up_inode()
505 		ovl_path_lowerdata(c->dentry, &datapath);  in ovl_copy_up_inode()
512 	err = ovl_copy_xattr(c->dentry->d_sb, c->lowerpath.dentry, temp);  in ovl_copy_up_inode()
524 		err = ovl_set_origin(c->dentry, c->lowerpath.dentry, temp);  in ovl_copy_up_inode()
530 		err = ovl_check_setxattr(c->dentry, temp, OVL_XATTR_METACOPY,  in ovl_copy_up_inode()
551 static int ovl_prep_cu_creds(struct dentry *dentry, struct ovl_cu_creds *cc)  in ovl_prep_cu_creds()  argument
556 	err = security_inode_copy_up(dentry, &cc->new);  in ovl_prep_cu_creds()
582 	struct dentry *temp, *upper;  in ovl_copy_up_workdir()
597 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_workdir()
613 		err = ovl_create_index(c->dentry, c->lowerpath.dentry, temp);  in ovl_copy_up_workdir()
629 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_workdir()
630 	inode = d_inode(c->dentry);  in ovl_copy_up_workdir()
649 	struct dentry *temp, *upper;  in ovl_copy_up_tmpfile()
653 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_tmpfile()
681 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_tmpfile()
682 	ovl_inode_update(d_inode(c->dentry), temp);  in ovl_copy_up_tmpfile()
703 	struct ovl_fs *ofs = c->dentry->d_sb->s_fs_info;  in ovl_do_copy_up()
712 	if (ovl_need_index(c->dentry)) {  in ovl_do_copy_up()
715 			c->workdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
724 		c->destdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
725 		err = ovl_get_index_name(c->lowerpath.dentry, &c->destname);  in ovl_do_copy_up()
750 		ovl_set_flag(OVL_INDEX, d_inode(c->dentry));  in ovl_do_copy_up()
754 		err = ovl_set_nlink_upper(c->dentry);  in ovl_do_copy_up()
763 		ovl_dentry_set_upper_alias(c->dentry);  in ovl_do_copy_up()
772 static bool ovl_need_meta_copy_up(struct dentry *dentry, umode_t mode,  in ovl_need_meta_copy_up()  argument
775 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_need_meta_copy_up()
789 static ssize_t ovl_getxattr(struct dentry *dentry, char *name, char **value)  in ovl_getxattr()  argument
794 	res = vfs_getxattr(dentry, name, NULL, 0);  in ovl_getxattr()
803 		res = vfs_getxattr(dentry, name, buf, res);  in ovl_getxattr()
815 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_meta_inode_data()
821 	ovl_path_upper(c->dentry, &upperpath);  in ovl_copy_up_meta_inode_data()
822 	if (WARN_ON(upperpath.dentry == NULL))  in ovl_copy_up_meta_inode_data()
825 	ovl_path_lowerdata(c->dentry, &datapath);  in ovl_copy_up_meta_inode_data()
826 	if (WARN_ON(datapath.dentry == NULL))  in ovl_copy_up_meta_inode_data()
830 		err = cap_size = ovl_getxattr(upperpath.dentry, XATTR_NAME_CAPS,  in ovl_copy_up_meta_inode_data()
845 		err = vfs_setxattr(upperpath.dentry, XATTR_NAME_CAPS,  in ovl_copy_up_meta_inode_data()
852 	err = ovl_do_removexattr(ofs, upperpath.dentry, OVL_XATTR_METACOPY);  in ovl_copy_up_meta_inode_data()
856 	ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_meta_inode_data()
863 static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,  in ovl_copy_up_one()  argument
871 		.dentry = dentry,  in ovl_copy_up_one()
872 		.workdir = ovl_workdir(dentry),  in ovl_copy_up_one()
878 	ovl_path_lower(dentry, &ctx.lowerpath);  in ovl_copy_up_one()
884 	ctx.metacopy = ovl_need_meta_copy_up(dentry, ctx.stat.mode, flags);  in ovl_copy_up_one()
888 		ctx.destdir = parentpath.dentry;  in ovl_copy_up_one()
889 		ctx.destname = dentry->d_name;  in ovl_copy_up_one()
903 		ctx.link = vfs_get_link(ctx.lowerpath.dentry, &done);  in ovl_copy_up_one()
908 	err = ovl_copy_up_start(dentry, flags);  in ovl_copy_up_one()
914 		if (!ovl_dentry_upper(dentry))  in ovl_copy_up_one()
916 		if (!err && parent && !ovl_dentry_has_upper_alias(dentry))  in ovl_copy_up_one()
918 		if (!err && ovl_dentry_needs_data_copy_up_locked(dentry, flags))  in ovl_copy_up_one()
920 		ovl_copy_up_end(dentry);  in ovl_copy_up_one()
927 static int ovl_copy_up_flags(struct dentry *dentry, int flags)  in ovl_copy_up_flags()  argument
930 	const struct cred *old_cred = ovl_override_creds(dentry->d_sb);  in ovl_copy_up_flags()
931 	bool disconnected = (dentry->d_flags & DCACHE_DISCONNECTED);  in ovl_copy_up_flags()
938 	if (WARN_ON(disconnected && d_is_dir(dentry)))  in ovl_copy_up_flags()
942 		struct dentry *next;  in ovl_copy_up_flags()
943 		struct dentry *parent = NULL;  in ovl_copy_up_flags()
945 		if (ovl_already_copied_up(dentry, flags))  in ovl_copy_up_flags()
948 		next = dget(dentry);  in ovl_copy_up_flags()
970 static bool ovl_open_need_copy_up(struct dentry *dentry, int flags)  in ovl_open_need_copy_up()  argument
973 	if (ovl_already_copied_up(dentry, flags))  in ovl_open_need_copy_up()
976 	if (special_file(d_inode(dentry)->i_mode))  in ovl_open_need_copy_up()
985 int ovl_maybe_copy_up(struct dentry *dentry, int flags)  in ovl_maybe_copy_up()  argument
989 	if (ovl_open_need_copy_up(dentry, flags)) {  in ovl_maybe_copy_up()
990 		err = ovl_want_write(dentry);  in ovl_maybe_copy_up()
992 			err = ovl_copy_up_flags(dentry, flags);  in ovl_maybe_copy_up()
993 			ovl_drop_write(dentry);  in ovl_maybe_copy_up()
1000 int ovl_copy_up_with_data(struct dentry *dentry)  in ovl_copy_up_with_data()  argument
1002 	return ovl_copy_up_flags(dentry, O_WRONLY);  in ovl_copy_up_with_data()
1005 int ovl_copy_up(struct dentry *dentry)  in ovl_copy_up()  argument
1007 	return ovl_copy_up_flags(dentry, 0);  in ovl_copy_up()