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[35.187.50.168]) by smtp.gmail.com with ESMTPSA id x12sm791790wmc.37.2018.12.10.21.46.08 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 10 Dec 2018 21:46:08 -0800 (PST) From: Junio C Hamano To: git@vger.kernel.org Cc: Jeff King , John Passaro Subject: [PATCH] run-command: report exec failure Date: Tue, 11 Dec 2018 14:46:07 +0900 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org In 321fd823 ("run-command: mark path lookup errors with ENOENT", 2018-10-24), we rewrote the logic to execute a command by looking in the directories on $PATH; as a side effect, a request to run a command that is not found on $PATH is noticed even before a child process is forked to execute it. We however stopped to report an exec failure in such a case by mistake. Add a logic to report the error unless silent-exec-failure is requested, to match the original code. Reported-by: John Passaro Signed-off-by: Junio C Hamano --- * Strictly speaking, the failure that is diagnosed by the spawned child is reported with die() and prefixed with "failure:"; I am adding error_errno(), so this will be reported with "error:" prefix, which is a slight change in behaviour, but I am guessing that this should be OK. run-command.c | 2 ++ t/t0061-run-command.sh | 9 ++++++--- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/run-command.c b/run-command.c index d679cc267c..e2bc18a083 100644 --- a/run-command.c +++ b/run-command.c @@ -728,6 +728,8 @@ int start_command(struct child_process *cmd) if (prepare_cmd(&argv, cmd) < 0) { failed_errno = errno; cmd->pid = -1; + if (!cmd->silent_exec_failure) + error_errno("cannot run %s", cmd->argv[0]); goto end_of_spawn; } diff --git a/t/t0061-run-command.sh b/t/t0061-run-command.sh index cf932c8514..9c83d44d9c 100755 --- a/t/t0061-run-command.sh +++ b/t/t0061-run-command.sh @@ -13,11 +13,13 @@ cat >hello-script <<-EOF EOF test_expect_success 'start_command reports ENOENT (slash)' ' - test-tool run-command start-command-ENOENT ./does-not-exist + test-tool run-command start-command-ENOENT ./does-not-exist 2>err && + test_i18ngrep "cannot run" err ' test_expect_success 'start_command reports ENOENT (no slash)' ' - test-tool run-command start-command-ENOENT does-not-exist + test-tool run-command start-command-ENOENT does-not-exist 2>err && + test_i18ngrep "cannot run" err ' test_expect_success 'run_command can run a command' ' @@ -33,7 +35,8 @@ test_expect_success 'run_command is restricted to PATH' ' write_script should-not-run <<-\EOF && echo yikes EOF - test_must_fail test-tool run-command run-command should-not-run + test_must_fail test-tool run-command run-command should-not-run 2>err && + test_i18ngrep "cannot run" err ' test_expect_success !MINGW 'run_command can run a script without a #! line' ' -- 2.20.0