39 int ovl_copy_xattr(struct dentry *old, struct dentry *new)  in ovl_copy_xattr()
180 static int ovl_set_size(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_size()
190 static int ovl_set_timestamps(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_timestamps()
202 int ovl_set_attr(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_attr()
227 struct ovl_fh *ovl_encode_real_fh(struct dentry *real, bool is_upper)  in ovl_encode_real_fh()
283 int ovl_set_origin(struct dentry *dentry, struct dentry *lower,  in ovl_set_origin()  argument
284 		   struct dentry *upper)  in ovl_set_origin()
303 	err = ovl_check_setxattr(dentry, upper, OVL_XATTR_ORIGIN, fh,  in ovl_set_origin()
311 static int ovl_set_upper_fh(struct dentry *upper, struct dentry *index)  in ovl_set_upper_fh()
331 static int ovl_create_index(struct dentry *dentry, struct dentry *origin,  in ovl_create_index()  argument
332 			    struct dentry *upper)  in ovl_create_index()
334 	struct dentry *indexdir = ovl_indexdir(dentry->d_sb);  in ovl_create_index()
336 	struct dentry *index = NULL;  in ovl_create_index()
337 	struct dentry *temp = NULL;  in ovl_create_index()
349 	if (WARN_ON(!d_is_dir(dentry)))  in ovl_create_index()
353 	if (WARN_ON(ovl_test_flag(OVL_INDEX, d_inode(dentry))))  in ovl_create_index()
386 	struct dentry *parent;
387 	struct dentry *dentry;  member
392 	struct dentry *destdir;
394 	struct dentry *workdir;
403 	struct dentry *upper;  in ovl_link_up()
404 	struct dentry *upperdir = ovl_dentry_upper(c->parent);  in ovl_link_up()
412 	err = ovl_set_nlink_lower(c->dentry);  in ovl_link_up()
417 	upper = lookup_one_len(c->dentry->d_name.name, upperdir,  in ovl_link_up()
418 			       c->dentry->d_name.len);  in ovl_link_up()
421 		err = ovl_do_link(ovl_dentry_upper(c->dentry), udir, upper);  in ovl_link_up()
427 			ovl_dentry_set_upper_alias(c->dentry);  in ovl_link_up()
434 	err = ovl_set_nlink_upper(c->dentry);  in ovl_link_up()
439 static int ovl_copy_up_inode(struct ovl_copy_up_ctx *c, struct dentry *temp)  in ovl_copy_up_inode()
450 		ovl_path_upper(c->dentry, &upperpath);  in ovl_copy_up_inode()
451 		if (WARN_ON(upperpath.dentry != NULL))  in ovl_copy_up_inode()
453 		upperpath.dentry = temp;  in ovl_copy_up_inode()
455 		ovl_path_lowerdata(c->dentry, &datapath);  in ovl_copy_up_inode()
461 	err = ovl_copy_xattr(c->lowerpath.dentry, temp);  in ovl_copy_up_inode()
473 		err = ovl_set_origin(c->dentry, c->lowerpath.dentry, temp);  in ovl_copy_up_inode()
479 		err = ovl_check_setxattr(c->dentry, temp, OVL_XATTR_METACOPY,  in ovl_copy_up_inode()
500 static int ovl_prep_cu_creds(struct dentry *dentry, struct ovl_cu_creds *cc)  in ovl_prep_cu_creds()  argument
505 	err = security_inode_copy_up(dentry, &cc->new);  in ovl_prep_cu_creds()
531 	struct dentry *temp, *upper;  in ovl_copy_up_workdir()
545 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_workdir()
561 		err = ovl_create_index(c->dentry, c->lowerpath.dentry, temp);  in ovl_copy_up_workdir()
577 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_workdir()
578 	inode = d_inode(c->dentry);  in ovl_copy_up_workdir()
597 	struct dentry *temp, *upper;  in ovl_copy_up_tmpfile()
601 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_tmpfile()
629 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_tmpfile()
630 	ovl_inode_update(d_inode(c->dentry), temp);  in ovl_copy_up_tmpfile()
651 	struct ovl_fs *ofs = c->dentry->d_sb->s_fs_info;  in ovl_do_copy_up()
660 	if (ovl_need_index(c->dentry)) {  in ovl_do_copy_up()
663 			c->workdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
672 		c->destdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
673 		err = ovl_get_index_name(c->lowerpath.dentry, &c->destname);  in ovl_do_copy_up()
698 		ovl_set_flag(OVL_INDEX, d_inode(c->dentry));  in ovl_do_copy_up()
702 		err = ovl_set_nlink_upper(c->dentry);  in ovl_do_copy_up()
711 		ovl_dentry_set_upper_alias(c->dentry);  in ovl_do_copy_up()
720 static bool ovl_need_meta_copy_up(struct dentry *dentry, umode_t mode,  in ovl_need_meta_copy_up()  argument
723 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_need_meta_copy_up()
745 	ovl_path_upper(c->dentry, &upperpath);  in ovl_copy_up_meta_inode_data()
746 	if (WARN_ON(upperpath.dentry == NULL))  in ovl_copy_up_meta_inode_data()
749 	ovl_path_lowerdata(c->dentry, &datapath);  in ovl_copy_up_meta_inode_data()
750 	if (WARN_ON(datapath.dentry == NULL))  in ovl_copy_up_meta_inode_data()
754 		err = cap_size = ovl_getxattr(upperpath.dentry, XATTR_NAME_CAPS,  in ovl_copy_up_meta_inode_data()
769 		err = ovl_do_setxattr(upperpath.dentry, XATTR_NAME_CAPS,  in ovl_copy_up_meta_inode_data()
776 	err = vfs_removexattr(upperpath.dentry, OVL_XATTR_METACOPY);  in ovl_copy_up_meta_inode_data()
780 	ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_meta_inode_data()
787 static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,  in ovl_copy_up_one()  argument
795 		.dentry = dentry,  in ovl_copy_up_one()
796 		.workdir = ovl_workdir(dentry),  in ovl_copy_up_one()
802 	ovl_path_lower(dentry, &ctx.lowerpath);  in ovl_copy_up_one()
808 	ctx.metacopy = ovl_need_meta_copy_up(dentry, ctx.stat.mode, flags);  in ovl_copy_up_one()
812 		ctx.destdir = parentpath.dentry;  in ovl_copy_up_one()
813 		ctx.destname = dentry->d_name;  in ovl_copy_up_one()
827 		ctx.link = vfs_get_link(ctx.lowerpath.dentry, &done);  in ovl_copy_up_one()
832 	err = ovl_copy_up_start(dentry, flags);  in ovl_copy_up_one()
838 		if (!ovl_dentry_upper(dentry))  in ovl_copy_up_one()
840 		if (!err && parent && !ovl_dentry_has_upper_alias(dentry))  in ovl_copy_up_one()
842 		if (!err && ovl_dentry_needs_data_copy_up_locked(dentry, flags))  in ovl_copy_up_one()
844 		ovl_copy_up_end(dentry);  in ovl_copy_up_one()
851 int ovl_copy_up_flags(struct dentry *dentry, int flags)  in ovl_copy_up_flags()  argument
854 	const struct cred *old_cred = ovl_override_creds(dentry->d_sb);  in ovl_copy_up_flags()
855 	bool disconnected = (dentry->d_flags & DCACHE_DISCONNECTED);  in ovl_copy_up_flags()
862 	if (WARN_ON(disconnected && d_is_dir(dentry)))  in ovl_copy_up_flags()
866 		struct dentry *next;  in ovl_copy_up_flags()
867 		struct dentry *parent = NULL;  in ovl_copy_up_flags()
869 		if (ovl_already_copied_up(dentry, flags))  in ovl_copy_up_flags()
872 		next = dget(dentry);  in ovl_copy_up_flags()
894 static bool ovl_open_need_copy_up(struct dentry *dentry, int flags)  in ovl_open_need_copy_up()  argument
897 	if (ovl_already_copied_up(dentry, flags))  in ovl_open_need_copy_up()
900 	if (special_file(d_inode(dentry)->i_mode))  in ovl_open_need_copy_up()
909 int ovl_maybe_copy_up(struct dentry *dentry, int flags)  in ovl_maybe_copy_up()  argument
913 	if (ovl_open_need_copy_up(dentry, flags)) {  in ovl_maybe_copy_up()
914 		err = ovl_want_write(dentry);  in ovl_maybe_copy_up()
916 			err = ovl_copy_up_flags(dentry, flags);  in ovl_maybe_copy_up()
917 			ovl_drop_write(dentry);  in ovl_maybe_copy_up()
924 int ovl_copy_up_with_data(struct dentry *dentry)  in ovl_copy_up_with_data()  argument
926 	return ovl_copy_up_flags(dentry, O_WRONLY);  in ovl_copy_up_with_data()
929 int ovl_copy_up(struct dentry *dentry)  in ovl_copy_up()  argument
931 	return ovl_copy_up_flags(dentry, 0);  in ovl_copy_up()