Message ID | 20210807214242.82385-50-imp@bsdimp.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[50.253.99.174]) by smtp.gmail.com with ESMTPSA id a17sm8062827ios.36.2021.08.07.14.43.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Aug 2021 14:43:39 -0700 (PDT) From: Warner Losh <imp@bsdimp.com> To: qemu-devel@nongnu.org Subject: [PATCH for 6.2 49/49] bsd-user: Add '-0 argv0' option to bsd-user/main.c Date: Sat, 7 Aug 2021 15:42:42 -0600 Message-Id: <20210807214242.82385-50-imp@bsdimp.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210807214242.82385-1-imp@bsdimp.com> References: <20210807214242.82385-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: none client-ip=2607:f8b0:4864:20::d2b; envelope-from=imp@bsdimp.com; helo=mail-io1-xd2b.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: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: kevans@freebsd.org, Colin Percival <cperciva@tarsnap.com>, Warner Losh <imp@bsdimp.com> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org> |
Series |
bsd-user updates to run hello world
|
expand
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On 8/7/21 11:42 AM, Warner Losh wrote: > From: Colin Percival<cperciva@tarsnap.com> > > 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<cperciva@tarsnap.com> > Signed-off-by: Warner Losh<imp@bsdimp.com> > --- > bsd-user/main.c | 5 +++++ > 1 file changed, 5 insertions(+) Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
diff --git a/bsd-user/main.c b/bsd-user/main.c index 1de5dc189b..c3ecdaf824 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -284,6 +284,7 @@ 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(); @@ -405,6 +406,8 @@ 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(); } @@ -428,6 +431,8 @@ int main(int argc, char **argv) usage(); } filename = argv[optind]; + if (argv0) + argv[optind] = argv0; if (!trace_init_backends()) { exit(1);