From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 28 May 2025 16:35:58 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uKHss-001DcP-0z for lore@lore.pengutronix.de; Wed, 28 May 2025 16:35:58 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uKHsr-0001uN-5z for lore@pengutronix.de; Wed, 28 May 2025 16:35:58 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=0BYuL7cbuoSn4DOol6QL5rb2SrkeYBsXrllbacOIr3w=; b=Ev9+zBXaETnRIiOQlQFGvX6q2O yDHb1EJC7c4NxQzQasWtFbEOSqNvCU8gK+kNua/WHqbbHTtcYOp/XSI/lC20+xy1QJBZg/WMLC5/D 2yL6dp29pwu7v46mb9LG9fYgyYYwZoTOcj/bQtbzGoYxHy9k8nDXxm/iv4kg4IZOM9EvjaZ9izpPn XtjseVlvd+JpbWh2wpy1xY+zu2TBeT4/7dTNzF88ZLQL/dMvDDQ6AZCv8vvaLMnw3aosy7qizNhlS 25Ex8CI+S6G38Q7Py0kg50odOYCYXTznkPXAXcKlDVCKqGUFn+AIgwV45YL5aHPPwIL6u7mGI7mrz cKI4zmyQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uKHsL-0000000DQCX-2XNW; Wed, 28 May 2025 14:35:25 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uKHns-0000000DPDa-0WNh for barebox@lists.infradead.org; Wed, 28 May 2025 14:30:50 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uKHnp-0006Ez-EM; Wed, 28 May 2025 16:30:45 +0200 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uKHnp-000bXj-0m; Wed, 28 May 2025 16:30:45 +0200 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1uKHnp-001qOC-0U; Wed, 28 May 2025 16:30:45 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Wed, 28 May 2025 16:30:36 +0200 Message-Id: <20250528143043.434446-4-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250528143043.434446-1-a.fatoum@pengutronix.de> References: <20250528143043.434446-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250528_073048_170328_6E270684 X-CRM114-Status: GOOD ( 12.35 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-6.7 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 03/10] common: add optional systemd.hostname generation X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) To maintain unique hostnames, having barebox fix up its own hostname appended by "-${global.serial_number} is a sane default. Add a Kconfig option to enable this. Signed-off-by: Ahmad Fatoum --- common/Kconfig | 10 ++++++++++ common/bootm.c | 9 ++++++++- 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/common/Kconfig b/common/Kconfig index fe50da8f3084..7bb1e1d452da 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -1254,6 +1254,16 @@ config MACHINE_ID Note: if no hashable information is available no machine id will be passed to the kernel. +config SERIAL_NUMBER_FIXUP_SYSTEMD_HOSTNAME + bool "append board serial number to systemd.hostname= fixup" + depends on FLEXIBLE_BOOTARGS + help + When a systemd.hostname= kernel command line argument is + fixed up, append a `-${global.serial_number}' suffix. + + This option without effect if global.bootm.provide_hostname + is unset. + config SYSTEMD_OF_WATCHDOG bool "inform devicetree-enabled kernel of used watchdog" depends on WATCHDOG && OFTREE && FLEXIBLE_BOOTARGS diff --git a/common/bootm.c b/common/bootm.c index 4c5913ffb95c..5c19e633972f 100644 --- a/common/bootm.c +++ b/common/bootm.c @@ -862,6 +862,7 @@ int bootm_boot(struct bootm_data *bootm_data) if (bootm_data->provide_hostname) { const char *hostname = getenv_nonempty("global.hostname"); + const char *suffix = NULL; char *hostname_bootarg; if (!hostname) { @@ -876,7 +877,13 @@ int bootm_boot(struct bootm_data *bootm_data) goto err_out; } - hostname_bootarg = basprintf("systemd.hostname=%s", hostname); + if (IS_ENABLED(CONFIG_SERIAL_NUMBER_FIXUP_SYSTEMD_HOSTNAME)) + suffix = barebox_get_serial_number(); + + hostname_bootarg = basprintf("systemd.hostname=%s%s%s", + hostname, suffix ? "-" : "", + suffix ?: ""); + globalvar_add_simple("linux.bootargs.hostname", hostname_bootarg); free(hostname_bootarg); } -- 2.39.5