From patchwork Tue Feb 18 14:02:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 183598 Delivered-To: patch@linaro.org Received: by 2002:a92:1f12:0:0:0:0:0 with SMTP id i18csp6154534ile; Tue, 18 Feb 2020 06:02:51 -0800 (PST) X-Google-Smtp-Source: APXvYqzI4riRj9m7fNdHjRP4shopGSOoqFpmbafC27V9z2mm9LSQUmw3ua749H7v6Yx7STIKBSQ2 X-Received: by 2002:a05:6830:22e2:: with SMTP id t2mr16192987otc.129.1582034571433; Tue, 18 Feb 2020 06:02:51 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1582034571; cv=none; d=google.com; s=arc-20160816; b=m9cdMC7JXCwfluMy1/C0aEYWU1KoJ1XgGDI2i7IY28gIlx0ALokc7kR597IZDNO6mH eUJFXzoCJVwoxRzPM0ufNAiKR4YG6X16KPNpR1kE/ixCCHXptV8nPyqOcd6tiPABliyE +oIzoxfWYUG38x6AwBNTVz0xeCaXJhJ6waH69KBhnnfjrckmrLqPlEG7G4EDhik4TUaI Cg+ZqzI1gJY8hMp6AhkDIjQf8uEl6r3xtbXkh5Rog+72lM+qbNW2ox1n6BhCJxvWC7he +x8mJFaEyvgdk1vQWYIz0AKPoy/6uLos8LowCgjMrPuh+g2yHOXivtJV7Ct+/Z5FeAX2 6m5w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=references:in-reply-to:message-id:date:subject:to:from :dkim-signature:delivered-to:sender:list-help:list-post:list-archive :list-subscribe:list-unsubscribe:list-id:precedence:mailing-list :dkim-signature:domainkey-signature; bh=8v4matkkl2xNCzGnXOjVnZ9R+czKwVvdV5sV3QiBX3Y=; b=ibC+Z0KMqS5tkCcGRqJh9sS0eSO2OrKsu+mMrkzd9SeGgZ4Kj77u6oSE9oZXhr8Ecs oHIXOzI1hhtySij3AKDPkwpYo1U/d/wxOpDSH4t5vQemYO6Dc9Hl8myMyJ9/3s66Qgn9 9pkPtA4EhR0A29gaWYJspBrWtyvmwtpIswtFtRvXvafaE4RFQuxglBBeAqspNcyg0kYl B24iOpddj1BJqVitt5g3Flbe9+TrzELLqKH3W6ehjWrRSQb0hP7HYhKJPynnWKgRJPBy 0G8VmCL1SrLBu8SM3D6LwUPcIETXv/KW9DNUHb0k57y0JJALGTYAn5DemJXALrtGiszH jzZQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@sourceware.org header.s=default header.b=SV0hrAnk; dkim=pass header.i=@linaro.org header.s=google header.b=vhJH0v1a; spf=pass (google.com: domain of libc-alpha-return-109880-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) smtp.mailfrom="libc-alpha-return-109880-patch=linaro.org@sourceware.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from sourceware.org (server1.sourceware.org. [209.132.180.131]) by mx.google.com with ESMTPS id s20si7933459oie.210.2020.02.18.06.02.51 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 18 Feb 2020 06:02:51 -0800 (PST) Received-SPF: pass (google.com: domain of libc-alpha-return-109880-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) client-ip=209.132.180.131; Authentication-Results: mx.google.com; dkim=pass header.i=@sourceware.org header.s=default header.b=SV0hrAnk; dkim=pass header.i=@linaro.org header.s=google header.b=vhJH0v1a; spf=pass (google.com: domain of libc-alpha-return-109880-patch=linaro.org@sourceware.org designates 209.132.180.131 as permitted sender) smtp.mailfrom="libc-alpha-return-109880-patch=linaro.org@sourceware.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:in-reply-to :references; q=dns; s=default; b=U9D6BT7KTyHkrj7CmXASHlbqixN+aYY 8T5cEpY3GdB5fbYbZ/xXIYN+Kj2EOVvr5lGVFUCtJhi+e+EgJ+ti5jkX/mSod4+T i8eOhsRWE9hntWScyVoscX1ZN4obfyxgpAgxzURUSE3zAM9deM7hOtCaO6Nnom5U g8A2L8X8Lb+8= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:subject:date:message-id:in-reply-to :references; s=default; bh=UGLknzIXm/ZBAIdM2D2TxF2p2lw=; b=SV0hr Ank5neohzSMVzaLn/NBvEUAA2ypCZlnyDbSZx74MtbfZ1UFlz8RTarfBSmygTfmD 7HStqIBHmFBU3VRwDX5zh3r/NZitG566PxqxIZwGLM/zVwjEe0Ycxxj+IBzeYf9m wO+MPKrGtcCnrZmY6aG2XigvHyMYl5aYVtL1zg= Received: (qmail 58492 invoked by alias); 18 Feb 2020 14:02:19 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 58328 invoked by uid 89); 18 Feb 2020 14:02:18 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-22.0 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.1 spammy=succeed, Die, him X-HELO: mail-qv1-f65.google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references; bh=8v4matkkl2xNCzGnXOjVnZ9R+czKwVvdV5sV3QiBX3Y=; b=vhJH0v1auWIAihKbwtW6Skzq9VLiUO3hTsc7dA4QZ61LK3OBfcYQHWfoVRuCO/IMMy RCEr2G7H9fkv9BxzhL9/9Y1lqmmgvT2Pfsk+yJkcWqlY3EOaIxPlUcffdN04YerfRomn dfi/Dkrhg74OTHf5jwmfLoKlFcWkyJyh9lMhOYxY2CMzlw4OdvygQLUmF8OCzV65XSNz Z4Qc36ktlbLJ+8YwCRBoabdPnE2/9hYniY5J2X3+FE5YMV/elVnKJyv1ARAF457xn6hl vo/aDV1TSkm0Ta3IZkExY6tg5rMJ69IUrFXT3j+Kcx3YkqntvZ/fv0FkFg3q5WRQov2V CArQ== Return-Path: From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH v2 2/3] posix: Refactor tst-waitid (BZ #14666) Date: Tue, 18 Feb 2020 11:02:04 -0300 Message-Id: <20200218140205.18263-2-adhemerval.zanella@linaro.org> In-Reply-To: <20200218140205.18263-1-adhemerval.zanella@linaro.org> References: <20200218140205.18263-1-adhemerval.zanella@linaro.org> Changes from previous version: - Use sigwaitinfo instead of global variables set by the signal handler. -- The main changes are: - Adapt to libsupport. - Synchronize the signal handler using atomics. - Replace waitpid by waitid calls. - Use support_process_state_wait to wait for child state. - Add tests for P_PGID and P_ALL. - Use sigwaitinfo instead of global state set by the signal handler. Checked on x86_64-linux-gnu and i686-linux-gnu. --- posix/tst-waitid.c | 561 ++++++++++++++------------------------------- 1 file changed, 166 insertions(+), 395 deletions(-) -- 2.17.1 diff --git a/posix/tst-waitid.c b/posix/tst-waitid.c index c4725489ea..2331c42e66 100644 --- a/posix/tst-waitid.c +++ b/posix/tst-waitid.c @@ -22,13 +22,20 @@ #include #include #include +#include +#include +#include + +#include +#include +#include +#include static void -test_child (void) +test_child (bool setgroup) { - /* Wait a second to be sure the parent set his variables before we - produce a SIGCHLD. */ - sleep (1); + if (setgroup) + TEST_COMPARE (setpgid (0, 0), 0); /* First thing, we stop ourselves. */ raise (SIGSTOP); @@ -44,475 +51,239 @@ test_child (void) # define WSTOPPED WUNTRACED #endif -static sig_atomic_t expecting_sigchld, spurious_sigchld; -#ifdef SA_SIGINFO -static siginfo_t sigchld_info; +/* Set with only SIGCHLD on do_test_waitid. */ +static sigset_t chldset; +#ifdef SA_SIGINFO static void sigchld (int signo, siginfo_t *info, void *ctx) { - if (signo != SIGCHLD) - { - printf ("SIGCHLD handler got signal %d instead!\n", signo); - _exit (EXIT_FAILURE); - } - - if (! expecting_sigchld) - { - spurious_sigchld = 1; - printf ("spurious SIGCHLD: signo %d code %d status %d pid %d\n", - info->si_signo, info->si_code, info->si_status, info->si_pid); - } - else - { - sigchld_info = *info; - expecting_sigchld = 0; - } } +#endif static void -check_sigchld (const char *phase, int *ok, int code, int status, pid_t pid) +check_sigchld (int code, int status, pid_t pid) { - if (expecting_sigchld) - { - printf ("missing SIGCHLD on %s\n", phase); - *ok = EXIT_FAILURE; - expecting_sigchld = 0; - return; - } +#ifdef SA_SIGINFO + siginfo_t siginfo; + TEST_COMPARE (sigwaitinfo (&chldset, &siginfo), SIGCHLD); - if (sigchld_info.si_signo != SIGCHLD) - { - printf ("SIGCHLD for %s signal %d\n", phase, sigchld_info.si_signo); - *ok = EXIT_FAILURE; - } - if (sigchld_info.si_code != code) - { - printf ("SIGCHLD for %s code %d\n", phase, sigchld_info.si_code); - *ok = EXIT_FAILURE; - } - if (sigchld_info.si_status != status) - { - printf ("SIGCHLD for %s status %d\n", phase, sigchld_info.si_status); - *ok = EXIT_FAILURE; - } - if (sigchld_info.si_pid != pid) - { - printf ("SIGCHLD for %s pid %d\n", phase, sigchld_info.si_pid); - *ok = EXIT_FAILURE; - } -} -# define CHECK_SIGCHLD(phase, code_check, status_check) \ - check_sigchld ((phase), &status, (code_check), (status_check), pid) -#else -# define CHECK_SIGCHLD(phase, code, status) ((void) 0) + TEST_COMPARE (siginfo.si_signo, SIGCHLD); + TEST_COMPARE (siginfo.si_code, code); + TEST_COMPARE (siginfo.si_status, status); + TEST_COMPARE (siginfo.si_pid, pid); #endif +} static int -do_test (int argc, char *argv[]) +do_test_waitd_common (idtype_t type, pid_t pid) { -#ifdef SA_SIGINFO - struct sigaction sa; - sa.sa_flags = SA_SIGINFO|SA_RESTART; - sa.sa_sigaction = &sigchld; - if (sigemptyset (&sa.sa_mask) < 0 || sigaction (SIGCHLD, &sa, NULL) < 0) - { - printf ("setting SIGCHLD handler: %m\n"); - return EXIT_FAILURE; - } -#endif + /* Adding process_state_tracing_stop ('t') allows the test to work under + trace programs such as ptrace. */ + enum process_state_t stop_state = process_state_stopped + | process_state_tracing_stop; - expecting_sigchld = 1; + support_process_state_wait (pid, stop_state); - pid_t pid = fork (); - if (pid < 0) - { - printf ("fork: %m\n"); - return EXIT_FAILURE; - } - else if (pid == 0) - { - test_child (); - _exit (127); - } - - int status = EXIT_SUCCESS; -#define RETURN(ok) \ - do { if (status == EXIT_SUCCESS) status = (ok); goto out; } while (0) - - /* Give the child a chance to stop. */ - sleep (3); - - CHECK_SIGCHLD ("stopped (before waitid)", CLD_STOPPED, SIGSTOP); + check_sigchld (CLD_STOPPED, SIGSTOP, pid); /* Now try a wait that should not succeed. */ siginfo_t info; + int fail; + info.si_signo = 0; /* A successful call sets it to SIGCHLD. */ - int fail = waitid (P_PID, pid, &info, WEXITED|WCONTINUED|WNOHANG); - switch (fail) - { - default: - printf ("waitid returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); - case -1: - printf ("waitid WNOHANG on stopped: %m\n"); - RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE); - case 0: - if (info.si_signo == 0) - break; - if (info.si_signo == SIGCHLD) - printf ("waitid WNOHANG on stopped status %d\n", info.si_status); - else - printf ("waitid WNOHANG on stopped signal %d\n", info.si_signo); - RETURN (EXIT_FAILURE); - } + fail = waitid (P_PID, pid, &info, WEXITED|WCONTINUED|WNOHANG); + if (fail == -1 && errno == ENOTSUP) + FAIL_RET ("waitid WNOHANG on stopped: %m"); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, 0); /* Next the wait that should succeed right away. */ info.si_signo = 0; /* A successful call sets it to SIGCHLD. */ info.si_pid = -1; info.si_status = -1; fail = waitid (P_PID, pid, &info, WSTOPPED|WNOHANG); - switch (fail) - { - default: - printf ("waitid WSTOPPED|WNOHANG returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); - case -1: - printf ("waitid WSTOPPED|WNOHANG on stopped: %m\n"); - RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE); - case 0: - if (info.si_signo != SIGCHLD) - { - printf ("waitid WSTOPPED|WNOHANG on stopped signal %d\n", - info.si_signo); - RETURN (EXIT_FAILURE); - } - if (info.si_code != CLD_STOPPED) - { - printf ("waitid WSTOPPED|WNOHANG on stopped code %d\n", - info.si_code); - RETURN (EXIT_FAILURE); - } - if (info.si_status != SIGSTOP) - { - printf ("waitid WSTOPPED|WNOHANG on stopped status %d\n", - info.si_status); - RETURN (EXIT_FAILURE); - } - if (info.si_pid != pid) - { - printf ("waitid WSTOPPED|WNOHANG on stopped pid %d != %d\n", - info.si_pid, pid); - RETURN (EXIT_FAILURE); - } - } + if (fail == -1 && errno == ENOTSUP) + FAIL_RET ("waitid WNOHANG on stopped: %m"); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_STOPPED); + TEST_COMPARE (info.si_status, SIGSTOP); + TEST_COMPARE (info.si_pid, pid); - expecting_sigchld = WCONTINUED != 0; + //expecting_sigchld = WCONTINUED != 0; if (kill (pid, SIGCONT) != 0) - { - printf ("kill (%d, SIGCONT): %m\n", pid); - RETURN (EXIT_FAILURE); - } + FAIL_RET ("kill (%d, SIGCONT): %m\n", pid); /* Wait for the child to have continued. */ - sleep (2); + support_process_state_wait (pid, process_state_sleeping); #if WCONTINUED != 0 - if (expecting_sigchld) - { - printf ("no SIGCHLD seen for SIGCONT (optional)\n"); - expecting_sigchld = 0; - } - else - CHECK_SIGCHLD ("continued (before waitid)", CLD_CONTINUED, SIGCONT); + { + sigset_t set; + sigemptyset (&set); + sigaddset (&set, SIGCHLD); + siginfo_t info; + TEST_COMPARE (sigwaitinfo (&set, &info), SIGCHLD); + + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_CONTINUED); + TEST_COMPARE (info.si_status, SIGCONT); + TEST_COMPARE (info.si_pid, pid); + } info.si_signo = 0; /* A successful call sets it to SIGCHLD. */ info.si_pid = -1; info.si_status = -1; fail = waitid (P_PID, pid, &info, WCONTINUED|WNOWAIT); - switch (fail) - { - default: - printf ("waitid WCONTINUED|WNOWAIT returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); - case -1: - printf ("waitid WCONTINUED|WNOWAIT on continued: %m\n"); - RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE); - case 0: - if (info.si_signo != SIGCHLD) - { - printf ("waitid WCONTINUED|WNOWAIT on continued signal %d\n", - info.si_signo); - RETURN (EXIT_FAILURE); - } - if (info.si_code != CLD_CONTINUED) - { - printf ("waitid WCONTINUED|WNOWAIT on continued code %d\n", - info.si_code); - RETURN (EXIT_FAILURE); - } - if (info.si_status != SIGCONT) - { - printf ("waitid WCONTINUED|WNOWAIT on continued status %d\n", - info.si_status); - RETURN (EXIT_FAILURE); - } - if (info.si_pid != pid) - { - printf ("waitid WCONTINUED|WNOWAIT on continued pid %d != %d\n", - info.si_pid, pid); - RETURN (EXIT_FAILURE); - } - } + if (fail == -1 && errno == ENOTSUP) + FAIL_RET ("waitid WCONTINUED|WNOWAIT on continued: %m"); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_CONTINUED); + TEST_COMPARE (info.si_status, SIGCONT); + TEST_COMPARE (info.si_pid, pid); /* That should leave the CLD_CONTINUED state waiting to be seen again. */ info.si_signo = 0; /* A successful call sets it to SIGCHLD. */ info.si_pid = -1; info.si_status = -1; fail = waitid (P_PID, pid, &info, WCONTINUED); - switch (fail) - { - default: - printf ("waitid WCONTINUED returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); - case -1: - printf ("waitid WCONTINUED on continued: %m\n"); - RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE); - case 0: - if (info.si_signo != SIGCHLD) - { - printf ("waitid WCONTINUED on continued signal %d\n", info.si_signo); - RETURN (EXIT_FAILURE); - } - if (info.si_code != CLD_CONTINUED) - { - printf ("waitid WCONTINUED on continued code %d\n", info.si_code); - RETURN (EXIT_FAILURE); - } - if (info.si_status != SIGCONT) - { - printf ("waitid WCONTINUED on continued status %d\n", - info.si_status); - RETURN (EXIT_FAILURE); - } - if (info.si_pid != pid) - { - printf ("waitid WCONTINUED on continued pid %d != %d\n", - info.si_pid, pid); - RETURN (EXIT_FAILURE); - } - } + if (fail == -1 && errno == ENOTSUP) + FAIL_RET ("waitid WCONTINUED on continued: %m"); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_CONTINUED); + TEST_COMPARE (info.si_status, SIGCONT); + TEST_COMPARE (info.si_pid, pid); /* Now try a wait that should not succeed. */ info.si_signo = 0; /* A successful call sets it to SIGCHLD. */ fail = waitid (P_PID, pid, &info, WCONTINUED|WNOHANG); - switch (fail) - { - default: - printf ("waitid returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); - case -1: - printf ("waitid WCONTINUED|WNOHANG on waited continued: %m\n"); - RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE); - case 0: - if (info.si_signo == 0) - break; - if (info.si_signo == SIGCHLD) - printf ("waitid WCONTINUED|WNOHANG on waited continued status %d\n", - info.si_status); - else - printf ("waitid WCONTINUED|WNOHANG on waited continued signal %d\n", - info.si_signo); - RETURN (EXIT_FAILURE); - } + if (fail == -1 && errno == ENOTSUP) + FAIL_RET ("waitid WCONTINUED|WNOHANG on waited continued: %m"); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, 0); /* Now stop him again and test waitpid with WCONTINUED. */ - expecting_sigchld = 1; + //expecting_sigchld = 1; if (kill (pid, SIGSTOP) != 0) - { - printf ("kill (%d, SIGSTOP): %m\n", pid); - RETURN (EXIT_FAILURE); - } + FAIL_RET ("kill (%d, SIGSTOP): %m\n", pid); - /* Give the child a chance to stop. The waitpid call below will block - until it has stopped, but if we are real quick and enter the waitpid - system call before the SIGCHLD has been generated, then it will be - discarded and never delivered. */ - sleep (3); + /* Wait the child stop. The waitid call below will block until it has + stopped, but if we are real quick and enter the waitid system call + before the SIGCHLD has been generated, then it will be discarded and + never delivered. */ + support_process_state_wait (pid, stop_state); - pid_t wpid = waitpid (pid, &fail, WUNTRACED); - if (wpid < 0) - { - printf ("waitpid WUNTRACED on stopped: %m\n"); - RETURN (EXIT_FAILURE); - } - else if (wpid != pid) - { - printf ("waitpid WUNTRACED on stopped returned %d != %d (status %x)\n", - wpid, pid, fail); - RETURN (EXIT_FAILURE); - } - else if (!WIFSTOPPED (fail) || WIFSIGNALED (fail) || WIFEXITED (fail) - || WIFCONTINUED (fail) || WSTOPSIG (fail) != SIGSTOP) - { - printf ("waitpid WUNTRACED on stopped: status %x\n", fail); - RETURN (EXIT_FAILURE); - } - CHECK_SIGCHLD ("stopped (after waitpid)", CLD_STOPPED, SIGSTOP); + fail = waitid (type, pid, &info, WEXITED|WSTOPPED); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_STOPPED); + TEST_COMPARE (info.si_status, SIGSTOP); + TEST_COMPARE (info.si_pid, pid); + + check_sigchld (CLD_STOPPED, SIGSTOP, pid); - expecting_sigchld = 1; if (kill (pid, SIGCONT) != 0) - { - printf ("kill (%d, SIGCONT): %m\n", pid); - RETURN (EXIT_FAILURE); - } + FAIL_RET ("kill (%d, SIGCONT): %m\n", pid); /* Wait for the child to have continued. */ - sleep (2); + support_process_state_wait (pid, process_state_sleeping); - if (expecting_sigchld) - { - printf ("no SIGCHLD seen for SIGCONT (optional)\n"); - expecting_sigchld = 0; - } - else - CHECK_SIGCHLD ("continued (before waitpid)", CLD_CONTINUED, SIGCONT); + check_sigchld (CLD_CONTINUED, SIGCONT, pid); - wpid = waitpid (pid, &fail, WCONTINUED); - if (wpid < 0) - { - if (errno == EINVAL) - printf ("waitpid does not support WCONTINUED\n"); - else - { - printf ("waitpid WCONTINUED on continued: %m\n"); - RETURN (EXIT_FAILURE); - } - } - else if (wpid != pid) - { - printf ("\ -waitpid WCONTINUED on continued returned %d != %d (status %x)\n", - wpid, pid, fail); - RETURN (EXIT_FAILURE); - } - else if (WIFSTOPPED (fail) || WIFSIGNALED (fail) || WIFEXITED (fail) - || !WIFCONTINUED (fail)) - { - printf ("waitpid WCONTINUED on continued: status %x\n", fail); - RETURN (EXIT_FAILURE); - } + fail = waitid (type, pid, &info, WCONTINUED); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_CONTINUED); + TEST_COMPARE (info.si_status, SIGCONT); + TEST_COMPARE (info.si_pid, pid); #endif - expecting_sigchld = 1; - /* Die, child, die! */ if (kill (pid, SIGKILL) != 0) - { - printf ("kill (%d, SIGKILL): %m\n", pid); - RETURN (EXIT_FAILURE); - } + FAIL_RET ("kill (%d, SIGKILL): %m\n", pid); #ifdef WNOWAIT info.si_signo = 0; /* A successful call sets it to SIGCHLD. */ info.si_pid = -1; info.si_status = -1; - fail = waitid (P_PID, pid, &info, WEXITED|WNOWAIT); - switch (fail) - { - default: - printf ("waitid WNOWAIT returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); - case -1: - printf ("waitid WNOWAIT on killed: %m\n"); - RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE); - case 0: - if (info.si_signo != SIGCHLD) - { - printf ("waitid WNOWAIT on killed signal %d\n", info.si_signo); - RETURN (EXIT_FAILURE); - } - if (info.si_code != CLD_KILLED) - { - printf ("waitid WNOWAIT on killed code %d\n", info.si_code); - RETURN (EXIT_FAILURE); - } - if (info.si_status != SIGKILL) - { - printf ("waitid WNOWAIT on killed status %d\n", info.si_status); - RETURN (EXIT_FAILURE); - } - if (info.si_pid != pid) - { - printf ("waitid WNOWAIT on killed pid %d != %d\n", info.si_pid, pid); - RETURN (EXIT_FAILURE); - } - } + fail = waitid (type, pid, &info, WEXITED|WNOWAIT); + if (fail == -1 && errno == ENOTSUP) + FAIL_RET ("waitid WNOHANG on killed: %m"); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_KILLED); + TEST_COMPARE (info.si_status, SIGKILL); + TEST_COMPARE (info.si_pid, pid); #else - /* Allow enough time to be sure the child died; we didn't synchronize. */ - sleep (2); + support_process_state_wait (pid, process_state_zombie); #endif - - CHECK_SIGCHLD ("killed", CLD_KILLED, SIGKILL); + check_sigchld (CLD_KILLED, SIGKILL, pid); info.si_signo = 0; /* A successful call sets it to SIGCHLD. */ info.si_pid = -1; info.si_status = -1; - fail = waitid (P_PID, pid, &info, WEXITED|WNOHANG); - switch (fail) - { - default: - printf ("waitid WNOHANG returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); - case -1: - printf ("waitid WNOHANG on killed: %m\n"); - RETURN (EXIT_FAILURE); - case 0: - if (info.si_signo != SIGCHLD) - { - printf ("waitid WNOHANG on killed signal %d\n", info.si_signo); - RETURN (EXIT_FAILURE); - } - if (info.si_code != CLD_KILLED) - { - printf ("waitid WNOHANG on killed code %d\n", info.si_code); - RETURN (EXIT_FAILURE); - } - if (info.si_status != SIGKILL) - { - printf ("waitid WNOHANG on killed status %d\n", info.si_status); - RETURN (EXIT_FAILURE); - } - if (info.si_pid != pid) - { - printf ("waitid WNOHANG on killed pid %d != %d\n", info.si_pid, pid); - RETURN (EXIT_FAILURE); - } - } + fail = waitid (type, pid, &info, WEXITED | WNOHANG); + TEST_COMPARE (fail, 0); + TEST_COMPARE (info.si_signo, SIGCHLD); + TEST_COMPARE (info.si_code, CLD_KILLED); + TEST_COMPARE (info.si_status, SIGKILL); + TEST_COMPARE (info.si_pid, pid); fail = waitid (P_PID, pid, &info, WEXITED); - if (fail == -1) - { - if (errno != ECHILD) - { - printf ("waitid WEXITED on killed: %m\n"); - RETURN (EXIT_FAILURE); - } - } - else + TEST_COMPARE (fail, -1); + TEST_COMPARE (errno, ECHILD); + + return 0; +} + +static int +do_test_waitid (idtype_t type) +{ +#ifdef SA_SIGINFO + { + struct sigaction sa; + sa.sa_flags = SA_SIGINFO | SA_RESTART; + sa.sa_sigaction = sigchld; + sigemptyset (&sa.sa_mask); + xsigaction (SIGCHLD, &sa, NULL); + } +#endif + + sigemptyset (&chldset); + sigaddset (&chldset, SIGCHLD); + + /* The SIGCHLD shall has blocked at the time of the call to sigwait; + otherwise, the behavior is undefined. */ + sigprocmask (SIG_BLOCK, &chldset, NULL); + + pid_t pid = xfork (); + if (pid == 0) { - printf ("waitid WEXITED returned bogus value %d\n", fail); - RETURN (EXIT_FAILURE); + test_child (type == P_PGID || type == P_ALL); + _exit (127); } -#undef RETURN - out: - if (spurious_sigchld) - status = EXIT_FAILURE; - signal (SIGCHLD, SIG_IGN); + int ret = do_test_waitd_common (type, pid); + + xsignal (SIGCHLD, SIG_IGN); kill (pid, SIGKILL); /* Make sure it's dead if we bailed early. */ - return status; + return ret; +} + +static int +do_test (void) +{ + int ret = 0; + + ret |= do_test_waitid (P_PID); + ret |= do_test_waitid (P_PGID); + ret |= do_test_waitid (P_ALL); + + return ret; } -#include "../test-skeleton.c" +#include