47 int ovl_copy_xattr(struct super_block *sb, struct dentry *old,  in ovl_copy_xattr()
48 		   struct dentry *new)  in ovl_copy_xattr()
157 		err = ovl_set_protattr(inode, new->dentry, &oldfa);  in ovl_copy_fileattr()
272 static int ovl_set_size(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_size()
282 static int ovl_set_timestamps(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_timestamps()
294 int ovl_set_attr(struct dentry *upperdentry, struct kstat *stat)  in ovl_set_attr()
319 struct ovl_fh *ovl_encode_real_fh(struct ovl_fs *ofs, struct dentry *real,  in ovl_encode_real_fh()
374 int ovl_set_origin(struct ovl_fs *ofs, struct dentry *lower,  in ovl_set_origin()
375 		   struct dentry *upper)  in ovl_set_origin()
403 static int ovl_set_upper_fh(struct ovl_fs *ofs, struct dentry *upper,  in ovl_set_upper_fh()
404 			    struct dentry *index)  in ovl_set_upper_fh()
424 static int ovl_create_index(struct dentry *dentry, struct dentry *origin,  in ovl_create_index()  argument
425 			    struct dentry *upper)  in ovl_create_index()
427 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);  in ovl_create_index()
428 	struct dentry *indexdir = ovl_indexdir(dentry->d_sb);  in ovl_create_index()
430 	struct dentry *index = NULL;  in ovl_create_index()
431 	struct dentry *temp = NULL;  in ovl_create_index()
443 	if (WARN_ON(!d_is_dir(dentry)))  in ovl_create_index()
447 	if (WARN_ON(ovl_test_flag(OVL_INDEX, d_inode(dentry))))  in ovl_create_index()
480 	struct dentry *parent;
481 	struct dentry *dentry;  member
486 	struct dentry *destdir;
488 	struct dentry *workdir;
497 	struct dentry *upper;  in ovl_link_up()
498 	struct dentry *upperdir = ovl_dentry_upper(c->parent);  in ovl_link_up()
506 	err = ovl_set_nlink_lower(c->dentry);  in ovl_link_up()
511 	upper = lookup_one_len(c->dentry->d_name.name, upperdir,  in ovl_link_up()
512 			       c->dentry->d_name.len);  in ovl_link_up()
515 		err = ovl_do_link(ovl_dentry_upper(c->dentry), udir, upper);  in ovl_link_up()
521 			ovl_dentry_set_upper_alias(c->dentry);  in ovl_link_up()
528 	err = ovl_set_nlink_upper(c->dentry);  in ovl_link_up()
533 static int ovl_copy_up_inode(struct ovl_copy_up_ctx *c, struct dentry *temp)  in ovl_copy_up_inode()
535 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_inode()
536 	struct inode *inode = d_inode(c->dentry);  in ovl_copy_up_inode()
540 	ovl_path_upper(c->dentry, &upperpath);  in ovl_copy_up_inode()
541 	if (WARN_ON(upperpath.dentry != NULL))  in ovl_copy_up_inode()
544 	upperpath.dentry = temp;  in ovl_copy_up_inode()
551 		ovl_path_lowerdata(c->dentry, &datapath);  in ovl_copy_up_inode()
558 	err = ovl_copy_xattr(c->dentry->d_sb, c->lowerpath.dentry, temp);  in ovl_copy_up_inode()
580 		err = ovl_set_origin(ofs, c->lowerpath.dentry, temp);  in ovl_copy_up_inode()
607 static int ovl_prep_cu_creds(struct dentry *dentry, struct ovl_cu_creds *cc)  in ovl_prep_cu_creds()  argument
612 	err = security_inode_copy_up(dentry, &cc->new);  in ovl_prep_cu_creds()
638 	struct dentry *temp, *upper;  in ovl_copy_up_workdir()
653 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_workdir()
669 		err = ovl_create_index(c->dentry, c->lowerpath.dentry, temp);  in ovl_copy_up_workdir()
685 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_workdir()
686 	inode = d_inode(c->dentry);  in ovl_copy_up_workdir()
705 	struct dentry *temp, *upper;  in ovl_copy_up_tmpfile()
709 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_tmpfile()
737 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_tmpfile()
738 	ovl_inode_update(d_inode(c->dentry), temp);  in ovl_copy_up_tmpfile()
759 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_do_copy_up()
768 	if (ovl_need_index(c->dentry)) {  in ovl_do_copy_up()
771 			c->workdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
780 		c->destdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
781 		err = ovl_get_index_name(ofs, c->lowerpath.dentry, &c->destname);  in ovl_do_copy_up()
806 		ovl_set_flag(OVL_INDEX, d_inode(c->dentry));  in ovl_do_copy_up()
810 		err = ovl_set_nlink_upper(c->dentry);  in ovl_do_copy_up()
819 		ovl_dentry_set_upper_alias(c->dentry);  in ovl_do_copy_up()
828 static bool ovl_need_meta_copy_up(struct dentry *dentry, umode_t mode,  in ovl_need_meta_copy_up()  argument
831 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_need_meta_copy_up()
845 static ssize_t ovl_getxattr(struct dentry *dentry, char *name, char **value)  in ovl_getxattr()  argument
850 	res = vfs_getxattr(&init_user_ns, dentry, name, NULL, 0);  in ovl_getxattr()
859 		res = vfs_getxattr(&init_user_ns, dentry, name, buf, res);  in ovl_getxattr()
871 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_meta_inode_data()
877 	ovl_path_upper(c->dentry, &upperpath);  in ovl_copy_up_meta_inode_data()
878 	if (WARN_ON(upperpath.dentry == NULL))  in ovl_copy_up_meta_inode_data()
881 	ovl_path_lowerdata(c->dentry, &datapath);  in ovl_copy_up_meta_inode_data()
882 	if (WARN_ON(datapath.dentry == NULL))  in ovl_copy_up_meta_inode_data()
886 		err = cap_size = ovl_getxattr(upperpath.dentry, XATTR_NAME_CAPS,  in ovl_copy_up_meta_inode_data()
901 		err = vfs_setxattr(&init_user_ns, upperpath.dentry,  in ovl_copy_up_meta_inode_data()
908 	err = ovl_do_removexattr(ofs, upperpath.dentry, OVL_XATTR_METACOPY);  in ovl_copy_up_meta_inode_data()
912 	ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_meta_inode_data()
919 static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,  in ovl_copy_up_one()  argument
927 		.dentry = dentry,  in ovl_copy_up_one()
928 		.workdir = ovl_workdir(dentry),  in ovl_copy_up_one()
934 	ovl_path_lower(dentry, &ctx.lowerpath);  in ovl_copy_up_one()
940 	ctx.metacopy = ovl_need_meta_copy_up(dentry, ctx.stat.mode, flags);  in ovl_copy_up_one()
944 		ctx.destdir = parentpath.dentry;  in ovl_copy_up_one()
945 		ctx.destname = dentry->d_name;  in ovl_copy_up_one()
959 		ctx.link = vfs_get_link(ctx.lowerpath.dentry, &done);  in ovl_copy_up_one()
964 	err = ovl_copy_up_start(dentry, flags);  in ovl_copy_up_one()
970 		if (!ovl_dentry_upper(dentry))  in ovl_copy_up_one()
972 		if (!err && parent && !ovl_dentry_has_upper_alias(dentry))  in ovl_copy_up_one()
974 		if (!err && ovl_dentry_needs_data_copy_up_locked(dentry, flags))  in ovl_copy_up_one()
976 		ovl_copy_up_end(dentry);  in ovl_copy_up_one()
983 static int ovl_copy_up_flags(struct dentry *dentry, int flags)  in ovl_copy_up_flags()  argument
987 	bool disconnected = (dentry->d_flags & DCACHE_DISCONNECTED);  in ovl_copy_up_flags()
994 	if (WARN_ON(disconnected && d_is_dir(dentry)))  in ovl_copy_up_flags()
997 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_copy_up_flags()
999 		struct dentry *next;  in ovl_copy_up_flags()
1000 		struct dentry *parent = NULL;  in ovl_copy_up_flags()
1002 		if (ovl_already_copied_up(dentry, flags))  in ovl_copy_up_flags()
1005 		next = dget(dentry);  in ovl_copy_up_flags()
1027 static bool ovl_open_need_copy_up(struct dentry *dentry, int flags)  in ovl_open_need_copy_up()  argument
1030 	if (ovl_already_copied_up(dentry, flags))  in ovl_open_need_copy_up()
1033 	if (special_file(d_inode(dentry)->i_mode))  in ovl_open_need_copy_up()
1042 int ovl_maybe_copy_up(struct dentry *dentry, int flags)  in ovl_maybe_copy_up()  argument
1046 	if (ovl_open_need_copy_up(dentry, flags)) {  in ovl_maybe_copy_up()
1047 		err = ovl_want_write(dentry);  in ovl_maybe_copy_up()
1049 			err = ovl_copy_up_flags(dentry, flags);  in ovl_maybe_copy_up()
1050 			ovl_drop_write(dentry);  in ovl_maybe_copy_up()
1057 int ovl_copy_up_with_data(struct dentry *dentry)  in ovl_copy_up_with_data()  argument
1059 	return ovl_copy_up_flags(dentry, O_WRONLY);  in ovl_copy_up_with_data()
1062 int ovl_copy_up(struct dentry *dentry)  in ovl_copy_up()  argument
1064 	return ovl_copy_up_flags(dentry, 0);  in ovl_copy_up()