From patchwork Mon Nov 27 10:25:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 13469345 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5BD43C4167B for ; Mon, 27 Nov 2023 10:39:48 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.641883.1000860 (Exim 4.92) (envelope-from ) id 1r7Z1h-0001qY-7M; Mon, 27 Nov 2023 10:39:41 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 641883.1000860; Mon, 27 Nov 2023 10:39:41 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1r7Z1h-0001pz-46; Mon, 27 Nov 2023 10:39:41 +0000 Received: by outflank-mailman (input) for mailman id 641883; Mon, 27 Nov 2023 10:39:39 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1r7Yqm-0000Co-D0 for xen-devel@lists.xenproject.org; Mon, 27 Nov 2023 10:28:24 +0000 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id b0d1e573-8d0f-11ee-98e2-6d05b1d4d9a1; Mon, 27 Nov 2023 11:28:22 +0100 (CET) Received: from imap2.dmz-prg2.suse.org (imap2.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:98]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 6289D21A5E; Mon, 27 Nov 2023 10:28:22 +0000 (UTC) Received: from imap2.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap2.dmz-prg2.suse.org (Postfix) with ESMTPS id 38A33132A6; Mon, 27 Nov 2023 10:28:22 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap2.dmz-prg2.suse.org with ESMTPSA id PgOiDEZvZGVafwAAn2gu4w (envelope-from ); Mon, 27 Nov 2023 10:28:22 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: b0d1e573-8d0f-11ee-98e2-6d05b1d4d9a1 From: Juergen Gross To: minios-devel@lists.xenproject.org, xen-devel@lists.xenproject.org Cc: samuel.thibault@ens-lyon.org, wl@xen.org, Juergen Gross Subject: [PATCH v3 32/32] Mini-OS: hide all symbols not exported via EXPORT_SYMBOLS() Date: Mon, 27 Nov 2023 11:25:23 +0100 Message-Id: <20231127102523.28003-33-jgross@suse.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231127102523.28003-1-jgross@suse.com> References: <20231127102523.28003-1-jgross@suse.com> MIME-Version: 1.0 X-Spamd-Bar: ++++++++++++++++++++++++++ Authentication-Results: smtp-out1.suse.de; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=suse.com (policy=quarantine); spf=fail (smtp-out1.suse.de: domain of jgross@suse.com does not designate 2a07:de40:b281:104:10:150:64:98 as permitted sender) smtp.mailfrom=jgross@suse.com X-Rspamd-Server: rspamd2 X-Spamd-Result: default: False [26.60 / 50.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; BAYES_SPAM(5.10)[100.00%]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:98:from]; TO_DN_SOME(0.00)[]; R_MISSING_CHARSET(2.50)[]; BROKEN_CONTENT_TYPE(1.50)[]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_COUNT_THREE(0.00)[3]; MX_GOOD(-0.01)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(2.20)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; R_SPF_FAIL(1.00)[-all]; FROM_HAS_DN(0.00)[]; DMARC_POLICY_QUARANTINE(1.50)[suse.com : No valid SPF, No valid DKIM,quarantine]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(3.00)[1.000]; MIME_GOOD(-0.10)[text/plain]; NEURAL_SPAM_LONG(3.50)[1.000]; MID_CONTAINS_FROM(1.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[] X-Rspamd-Queue-Id: 6289D21A5E When doing the final linking of the Mini-OS kernel only keep the symbols visible which have been marked via EXPORT_SYMBOL(). Signed-off-by: Juergen Gross Reviewed-by: Samuel Thibault --- V3: - new patch --- Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/Makefile b/Makefile index 588496cb..456aed0b 100644 --- a/Makefile +++ b/Makefile @@ -167,6 +167,7 @@ $(OBJ_DIR)/arch/x86/minios-x86%.lds: arch/x86/minios-x86.lds.S $(OBJ_DIR)/$(TARGET)-kern.o: $(OBJS) arch_lib $(OBJ_DIR)/$(TARGET_ARCH_DIR)/minios-$(MINIOS_TARGET_ARCH).lds $(LD) -r $(LDFLAGS) $(HEAD_OBJ) $(OBJS) $(LDARCHLIB) -o $@ $(OBJCOPY) --dump-section .export_symbol=$(OBJ_DIR)/syms $@ + $(OBJCOPY) -w -G $(GLOBAL_PREFIX)* --keep-global-symbols=$(OBJ_DIR)/syms --remove-section=.export_symbol $@ $@ $(OBJ_DIR)/$(TARGET): $(OBJ_DIR)/$(TARGET)-kern.o $(APP_O) $(LD) -r $(LDFLAGS) $(OBJ_DIR)/$(TARGET)-kern.o $(APP_O) $(LDLIBS) -o $@.o