47 int ovl_copy_xattr(struct super_block *sb, const struct path *oldpath, struct dentry *new)  in ovl_copy_xattr()
49 	struct dentry *old = oldpath->dentry;  in ovl_copy_xattr()
148 			old->dentry, err);  in ovl_copy_fileattr()
159 		err = ovl_set_protattr(inode, new->dentry, &oldfa);  in ovl_copy_fileattr()
181 			new->dentry, err);  in ovl_copy_fileattr()
196 static int ovl_copy_up_file(struct ovl_fs *ofs, struct dentry *dentry,  in ovl_copy_up_file()  argument
209 	ovl_path_lowerdata(dentry, &datapath);  in ovl_copy_up_file()
210 	if (WARN_ON(datapath.dentry == NULL))  in ovl_copy_up_file()
288 			struct dentry *upperdentry, struct kstat *stat)  in ovl_set_size()
298 static int ovl_set_timestamps(struct ovl_fs *ofs, struct dentry *upperdentry,  in ovl_set_timestamps()
311 int ovl_set_attr(struct ovl_fs *ofs, struct dentry *upperdentry,  in ovl_set_attr()
337 struct ovl_fh *ovl_encode_real_fh(struct ovl_fs *ofs, struct dentry *real,  in ovl_encode_real_fh()
392 int ovl_set_origin(struct ovl_fs *ofs, struct dentry *lower,  in ovl_set_origin()
393 		   struct dentry *upper)  in ovl_set_origin()
421 static int ovl_set_upper_fh(struct ovl_fs *ofs, struct dentry *upper,  in ovl_set_upper_fh()
422 			    struct dentry *index)  in ovl_set_upper_fh()
442 static int ovl_create_index(struct dentry *dentry, struct dentry *origin,  in ovl_create_index()  argument
443 			    struct dentry *upper)  in ovl_create_index()
445 	struct ovl_fs *ofs = OVL_FS(dentry->d_sb);  in ovl_create_index()
446 	struct dentry *indexdir = ovl_indexdir(dentry->d_sb);  in ovl_create_index()
448 	struct dentry *index = NULL;  in ovl_create_index()
449 	struct dentry *temp = NULL;  in ovl_create_index()
461 	if (WARN_ON(!d_is_dir(dentry)))  in ovl_create_index()
465 	if (WARN_ON(ovl_test_flag(OVL_INDEX, d_inode(dentry))))  in ovl_create_index()
498 	struct dentry *parent;
499 	struct dentry *dentry;  member
504 	struct dentry *destdir;
506 	struct dentry *workdir;
515 	struct dentry *upper;  in ovl_link_up()
516 	struct dentry *upperdir = ovl_dentry_upper(c->parent);  in ovl_link_up()
517 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_link_up()
525 	err = ovl_set_nlink_lower(c->dentry);  in ovl_link_up()
530 	upper = ovl_lookup_upper(ofs, c->dentry->d_name.name, upperdir,  in ovl_link_up()
531 				 c->dentry->d_name.len);  in ovl_link_up()
534 		err = ovl_do_link(ofs, ovl_dentry_upper(c->dentry), udir, upper);  in ovl_link_up()
540 			ovl_dentry_set_upper_alias(c->dentry);  in ovl_link_up()
547 	err = ovl_set_nlink_upper(c->dentry);  in ovl_link_up()
554 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_data()
565 	err = ovl_copy_up_file(ofs, c->dentry, new_file, c->stat.size);  in ovl_copy_up_data()
571 static int ovl_copy_up_metadata(struct ovl_copy_up_ctx *c, struct dentry *temp)  in ovl_copy_up_metadata()
573 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_metadata()
574 	struct inode *inode = d_inode(c->dentry);  in ovl_copy_up_metadata()
575 	struct path upperpath = { .mnt = ovl_upper_mnt(ofs), .dentry = temp };  in ovl_copy_up_metadata()
578 	err = ovl_copy_xattr(c->dentry->d_sb, &c->lowerpath, temp);  in ovl_copy_up_metadata()
600 		err = ovl_set_origin(ofs, c->lowerpath.dentry, temp);  in ovl_copy_up_metadata()
627 static int ovl_prep_cu_creds(struct dentry *dentry, struct ovl_cu_creds *cc)  in ovl_prep_cu_creds()  argument
632 	err = security_inode_copy_up(dentry, &cc->new);  in ovl_prep_cu_creds()
656 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_workdir()
660 	struct dentry *temp, *upper;  in ovl_copy_up_workdir()
675 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_workdir()
690 	path.dentry = temp;  in ovl_copy_up_workdir()
700 		err = ovl_create_index(c->dentry, c->lowerpath.dentry, temp);  in ovl_copy_up_workdir()
717 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_workdir()
718 	inode = d_inode(c->dentry);  in ovl_copy_up_workdir()
736 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_tmpfile()
738 	struct dentry *temp, *upper;  in ovl_copy_up_tmpfile()
743 	err = ovl_prep_cu_creds(c->dentry, &cc);  in ovl_copy_up_tmpfile()
753 	temp = tmpfile->f_path.dentry;  in ovl_copy_up_tmpfile()
755 		err = ovl_copy_up_file(ofs, c->dentry, tmpfile, c->stat.size);  in ovl_copy_up_tmpfile()
779 		ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_tmpfile()
780 	ovl_inode_update(d_inode(c->dentry), dget(temp));  in ovl_copy_up_tmpfile()
799 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_do_copy_up()
808 	if (ovl_need_index(c->dentry)) {  in ovl_do_copy_up()
811 			c->workdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
820 		c->destdir = ovl_indexdir(c->dentry->d_sb);  in ovl_do_copy_up()
821 		err = ovl_get_index_name(ofs, c->lowerpath.dentry, &c->destname);  in ovl_do_copy_up()
846 		ovl_set_flag(OVL_INDEX, d_inode(c->dentry));  in ovl_do_copy_up()
850 		err = ovl_set_nlink_upper(c->dentry);  in ovl_do_copy_up()
859 		ovl_dentry_set_upper_alias(c->dentry);  in ovl_do_copy_up()
868 static bool ovl_need_meta_copy_up(struct dentry *dentry, umode_t mode,  in ovl_need_meta_copy_up()  argument
871 	struct ovl_fs *ofs = dentry->d_sb->s_fs_info;  in ovl_need_meta_copy_up()
911 	struct ovl_fs *ofs = OVL_FS(c->dentry->d_sb);  in ovl_copy_up_meta_inode_data()
917 	ovl_path_upper(c->dentry, &upperpath);  in ovl_copy_up_meta_inode_data()
918 	if (WARN_ON(upperpath.dentry == NULL))  in ovl_copy_up_meta_inode_data()
937 		err = ovl_do_setxattr(ofs, upperpath.dentry, XATTR_NAME_CAPS,  in ovl_copy_up_meta_inode_data()
944 	err = ovl_removexattr(ofs, upperpath.dentry, OVL_XATTR_METACOPY);  in ovl_copy_up_meta_inode_data()
948 	ovl_set_upperdata(d_inode(c->dentry));  in ovl_copy_up_meta_inode_data()
955 static int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry,  in ovl_copy_up_one()  argument
963 		.dentry = dentry,  in ovl_copy_up_one()
964 		.workdir = ovl_workdir(dentry),  in ovl_copy_up_one()
970 	ovl_path_lower(dentry, &ctx.lowerpath);  in ovl_copy_up_one()
976 	ctx.metacopy = ovl_need_meta_copy_up(dentry, ctx.stat.mode, flags);  in ovl_copy_up_one()
980 		ctx.destdir = parentpath.dentry;  in ovl_copy_up_one()
981 		ctx.destname = dentry->d_name;  in ovl_copy_up_one()
995 		ctx.link = vfs_get_link(ctx.lowerpath.dentry, &done);  in ovl_copy_up_one()
1000 	err = ovl_copy_up_start(dentry, flags);  in ovl_copy_up_one()
1006 		if (!ovl_dentry_upper(dentry))  in ovl_copy_up_one()
1008 		if (!err && parent && !ovl_dentry_has_upper_alias(dentry))  in ovl_copy_up_one()
1010 		if (!err && ovl_dentry_needs_data_copy_up_locked(dentry, flags))  in ovl_copy_up_one()
1012 		ovl_copy_up_end(dentry);  in ovl_copy_up_one()
1019 static int ovl_copy_up_flags(struct dentry *dentry, int flags)  in ovl_copy_up_flags()  argument
1023 	bool disconnected = (dentry->d_flags & DCACHE_DISCONNECTED);  in ovl_copy_up_flags()
1030 	if (WARN_ON(disconnected && d_is_dir(dentry)))  in ovl_copy_up_flags()
1033 	old_cred = ovl_override_creds(dentry->d_sb);  in ovl_copy_up_flags()
1035 		struct dentry *next;  in ovl_copy_up_flags()
1036 		struct dentry *parent = NULL;  in ovl_copy_up_flags()
1038 		if (ovl_already_copied_up(dentry, flags))  in ovl_copy_up_flags()
1041 		next = dget(dentry);  in ovl_copy_up_flags()
1063 static bool ovl_open_need_copy_up(struct dentry *dentry, int flags)  in ovl_open_need_copy_up()  argument
1066 	if (ovl_already_copied_up(dentry, flags))  in ovl_open_need_copy_up()
1069 	if (special_file(d_inode(dentry)->i_mode))  in ovl_open_need_copy_up()
1078 int ovl_maybe_copy_up(struct dentry *dentry, int flags)  in ovl_maybe_copy_up()  argument
1082 	if (ovl_open_need_copy_up(dentry, flags)) {  in ovl_maybe_copy_up()
1083 		err = ovl_want_write(dentry);  in ovl_maybe_copy_up()
1085 			err = ovl_copy_up_flags(dentry, flags);  in ovl_maybe_copy_up()
1086 			ovl_drop_write(dentry);  in ovl_maybe_copy_up()
1093 int ovl_copy_up_with_data(struct dentry *dentry)  in ovl_copy_up_with_data()  argument
1095 	return ovl_copy_up_flags(dentry, O_WRONLY);  in ovl_copy_up_with_data()
1098 int ovl_copy_up(struct dentry *dentry)  in ovl_copy_up()  argument
1100 	return ovl_copy_up_flags(dentry, 0);  in ovl_copy_up()