From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 18 Feb 2025 13:43:45 +0100 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 1tkMx0-003uXA-0h for lore@lore.pengutronix.de; Tue, 18 Feb 2025 13:43:45 +0100 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 1tkMwz-0002ua-1a for lore@pengutronix.de; Tue, 18 Feb 2025 13:43:45 +0100 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: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:In-Reply-To:References:List-Owner; bh=xpwbxnVkK5Sx6BfPlZOcEmg/TiPFpVDID2ZTpV2xfV8=; b=ao2K5Km1UB5795oetcMPRtXQOl eCWoJmZ9y2vzTUTSqKKmgzm8jk6pTsOvPhlCnIJynn6aSF122JlgTkq5DGD0N2ViSZXoJrVnG/ii8 kwhuYmObnwf2QCXirLZFOfmTbS3NqPYEzPC+ecdNkaMKFqSbp8fEihGdkdLwebpjo/jJ5UYPWaAqH /Fy0pdo/0xPZnzM3Jnev4eLayu1fQ0VMVo8D/sTDaxvTBYacpH7ffexH55Ibm3jpC4Zg2qyZ6s9nS tZGzbjvlMjsxW8uvys3kNXlyncwF+68DsLZXz5tkqUWmVrtsEiQK0kacm0+aE0kNX+T27XsQ4cfQr Ucczlvkg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tkMwL-00000008BpD-23L3; Tue, 18 Feb 2025 12:43:05 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tkMwJ-00000008Bon-0e5w for barebox@lists.infradead.org; Tue, 18 Feb 2025 12:43:04 +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 1tkMwG-0002nU-Tq; Tue, 18 Feb 2025 13:43:00 +0100 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 1tkMwG-001axd-2M; Tue, 18 Feb 2025 13:43:00 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tkMwG-00GCpa-23; Tue, 18 Feb 2025 13:43:00 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Tue, 18 Feb 2025 13:43:00 +0100 Message-Id: <20250218124300.3862498-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250218_044303_190546_AEC81225 X-CRM114-Status: GOOD ( 13.46 ) 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=-5.4 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] dmesg: add support for dumping log into file 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) We already have a log_writefile() helper for dumping the log into a file. Make it easily accessible via the shell by having a new dmesg -o option call it. There is nothing keeping us from extending the function to support flags and levels like log_print does, but this can follow later if needed. Signed-off-by: Ahmad Fatoum --- commands/dmesg.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/commands/dmesg.c b/commands/dmesg.c index 8a60f075076e..7982188cda6d 100644 --- a/commands/dmesg.c +++ b/commands/dmesg.c @@ -76,13 +76,17 @@ static unsigned dmesg_get_levels(const char *__args) static int do_dmesg(int argc, char *argv[]) { + const char *outputfile = NULL; int opt, ret, i; int delete_buf = 0, emit = 0; unsigned flags = 0, levels = 0; char *set = NULL; - while ((opt = getopt(argc, argv, "ctderl:n:")) > 0) { + while ((opt = getopt(argc, argv, "o:ctderl:n:")) > 0) { switch (opt) { + case 'o': + outputfile = optarg; + break; case 'c': delete_buf = 1; break; @@ -111,6 +115,12 @@ static int do_dmesg(int argc, char *argv[]) } } + if (outputfile) { + if (flags || levels) + return COMMAND_ERROR_USAGE; + return log_writefile(outputfile); + } + if (set) { int level = str_to_loglevel(set); @@ -166,6 +176,7 @@ BAREBOX_CMD_HELP_TEXT("Known debug loglevels are: emerg, alert, crit, err, warn, BAREBOX_CMD_HELP_TEXT("vdebug") BAREBOX_CMD_HELP_TEXT("") BAREBOX_CMD_HELP_TEXT("Options:") +BAREBOX_CMD_HELP_OPT ("-o ", "Output all log to given file (conflicts with -tdlr)") BAREBOX_CMD_HELP_OPT ("-c", "Delete messages after printing them") BAREBOX_CMD_HELP_OPT ("-d", "Show a time delta to the last message") BAREBOX_CMD_HELP_OPT ("-e ", "Emit a log message") -- 2.39.5