From patchwork Thu Aug 26 21:12:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Warner Losh X-Patchwork-Id: 12460769 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20585C432BE for ; Thu, 26 Aug 2021 21:44:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CCF3560FD8 for ; Thu, 26 Aug 2021 21:44:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org CCF3560FD8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bsdimp.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:48888 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mJNAX-0004SW-Uz for qemu-devel@archiver.kernel.org; Thu, 26 Aug 2021 17:44:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39328) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mJMgJ-0006nm-Vb for qemu-devel@nongnu.org; Thu, 26 Aug 2021 17:13:04 -0400 Received: from mail-io1-xd36.google.com ([2607:f8b0:4864:20::d36]:41546) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mJMgH-000769-Hd for qemu-devel@nongnu.org; Thu, 26 Aug 2021 17:13:03 -0400 Received: by mail-io1-xd36.google.com with SMTP id j18so5558164ioj.8 for ; Thu, 26 Aug 2021 14:13:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=QdVAD5Ozu3VkCZu+3yXfvcd+75Hgy2jYJkzz4LyRfYY=; b=d46dgRT3ZF3RNvGDW8vlaFmGluL+90EDwFezlzW7z+wq90Lpt3BGrIi75Wpi01q4Fc 5zVZjrjU7wTQcKvzawAo1wim9g8WyHWcqBFhbvSjkNV0ev9Ey5CQb/EqCEdmjrxXLm1h zc1W9zkrgVKia77KBX4evg4VVLJDcJag/U2T3TsYl+TN3h/ZKzmekgH7aaFiIcH/RSkl +jby3HON8+bIIqf6TYrnDwpvAsMU9ZGYdf9mvYGZud8lG60yUrF4UH+V08N3oZaJY5qm RCwqB5ZcWovNq82YrBo3v1cwh1LqyhQQbUCQ5GXqCjORGJXApxXLOwyXsDDTaB0PkHNs VXmw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=QdVAD5Ozu3VkCZu+3yXfvcd+75Hgy2jYJkzz4LyRfYY=; b=Qf90UTSaPH/+fHFauD2qZtLpiCKwrC9s3tYA/Ik1mldFJvVJAykc7RLz4D/vWh+X8p RMuLr3KAZBvh3cOmGENXGL/R4whUvx0eZJeeJuRTMUu4g+GwMidmEJSkExGiCZ+PnD3+ XKAqcK8ry11bQG9hNlW6Tf7EvTDYraUsIvefbyQnsV2X3aQuVmGjpXRTSc9uOk0609yx u+6zvPbiRYxBQm3cDQ81xbrj2s6Ew1QVIW3jf5hhG7dJPVNZNVt9evJ08UJcdyrbr/NR Ju5/zmc1k4SOQpJE6MJDCmgEi6Vk1WY/tV3fSh6JtK1xakxY3PrxjdeXq3KLh38vAi5V 1IFw== X-Gm-Message-State: AOAM531+raFG61x9Sp83WB3RagpkqeR3fAcIHOQLdYUmcWI+KD8GR6l1 lYKIqgD8Vvlvw8kuSlwkIC4au1NzYZd+nTky X-Google-Smtp-Source: ABdhPJz4cJIY014awzSQUnNWwpYAdnTJbV7R97PV3N6Rd0BLJy2+qrWbBOyTlAd1mvoPwqMvRRbt8g== X-Received: by 2002:a02:90cb:: with SMTP id c11mr5195777jag.53.1630012380110; Thu, 26 Aug 2021 14:13:00 -0700 (PDT) Received: from dune.bsdimp.com (50-253-99-174-static.hfc.comcastbusiness.net. [50.253.99.174]) by smtp.gmail.com with ESMTPSA id a17sm2348633ilp.75.2021.08.26.14.12.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Aug 2021 14:12:59 -0700 (PDT) From: imp@bsdimp.com To: qemu-devel@nongnu.org Subject: [PATCH v2 42/43] bsd-user: Add '-0 argv0' option to bsd-user/main.c Date: Thu, 26 Aug 2021 15:12:00 -0600 Message-Id: <20210826211201.98877-43-imp@bsdimp.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210826211201.98877-1-imp@bsdimp.com> References: <20210826211201.98877-1-imp@bsdimp.com> MIME-Version: 1.0 Received-SPF: none client-ip=2607:f8b0:4864:20::d36; envelope-from=imp@bsdimp.com; helo=mail-io1-xd36.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Colin Percival , Richard Henderson , Warner Losh Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Colin Percival Previously it was impossible to emulate a program with a file name different from its argv[0]. With this change, you can run qemu -0 fakename realname args which runs the program "realname" with an argv of "fakename args". Signed-off-by: Colin Percival Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/main.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/bsd-user/main.c b/bsd-user/main.c index b35bcf4d1e..ae25f4c773 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -268,6 +268,7 @@ int main(int argc, char **argv) char **target_environ, **wrk; envlist_t *envlist = NULL; bsd_type = HOST_DEFAULT_BSD_TYPE; + char * argv0 = NULL; adjust_ssize(); @@ -390,6 +391,8 @@ int main(int argc, char **argv) do_strace = 1; } else if (!strcmp(r, "trace")) { trace_opt_parse(optarg); + } else if (!strcmp(r, "0")) { + argv0 = argv[optind++]; } else { usage(); } @@ -413,6 +416,8 @@ int main(int argc, char **argv) usage(); } filename = argv[optind]; + if (argv0) + argv[optind] = argv0; if (!trace_init_backends()) { exit(1);