diff options
Diffstat (limited to 'REORG.TODO/posix/tst-waitid.c')
| -rw-r--r-- | REORG.TODO/posix/tst-waitid.c | 520 |
1 files changed, 520 insertions, 0 deletions
diff --git a/REORG.TODO/posix/tst-waitid.c b/REORG.TODO/posix/tst-waitid.c new file mode 100644 index 0000000000..436da6492c --- /dev/null +++ b/REORG.TODO/posix/tst-waitid.c @@ -0,0 +1,520 @@ +/* Tests for waitid. + Copyright (C) 2004-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/wait.h> +#include <signal.h> + +#define TIMEOUT 15 + +static void +test_child (void) +{ + /* Wait a second to be sure the parent set his variables before we + produce a SIGCHLD. */ + sleep (1); + + /* First thing, we stop ourselves. */ + raise (SIGSTOP); + + /* Hey, we got continued! */ + while (1) + pause (); +} + +#ifndef WEXITED +# define WEXITED 0 +# define WCONTINUED 0 +# define WSTOPPED WUNTRACED +#endif + +static sig_atomic_t expecting_sigchld, spurious_sigchld; +#ifdef SA_SIGINFO +static siginfo_t sigchld_info; + +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; + } +} + +static void +check_sigchld (const char *phase, int *ok, int code, int status, pid_t pid) +{ + if (expecting_sigchld) + { + printf ("missing SIGCHLD on %s\n", phase); + *ok = EXIT_FAILURE; + expecting_sigchld = 0; + return; + } + + 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) +#endif + +static int +do_test (int argc, char *argv[]) +{ +#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 + + expecting_sigchld = 1; + + 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); + + /* Now try a wait that should not succeed. */ + siginfo_t info; + 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); + } + + /* 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); + } + } + + expecting_sigchld = WCONTINUED != 0; + + if (kill (pid, SIGCONT) != 0) + { + printf ("kill (%d, SIGCONT): %m\n", pid); + RETURN (EXIT_FAILURE); + } + + /* Wait for the child to have continued. */ + sleep (2); + +#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); + + 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); + } + } + + /* 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); + } + } + + /* 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); + } + + /* Now stop him again and test waitpid with WCONTINUED. */ + expecting_sigchld = 1; + if (kill (pid, SIGSTOP) != 0) + { + printf ("kill (%d, SIGSTOP): %m\n", pid); + RETURN (EXIT_FAILURE); + } + + /* 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); + + 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); + + expecting_sigchld = 1; + if (kill (pid, SIGCONT) != 0) + { + printf ("kill (%d, SIGCONT): %m\n", pid); + RETURN (EXIT_FAILURE); + } + + /* Wait for the child to have continued. */ + sleep (2); + + if (expecting_sigchld) + { + printf ("no SIGCHLD seen for SIGCONT (optional)\n"); + expecting_sigchld = 0; + } + else + CHECK_SIGCHLD ("continued (before waitpid)", CLD_CONTINUED, SIGCONT); + + 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); + } +#endif + + expecting_sigchld = 1; + + /* Die, child, die! */ + if (kill (pid, SIGKILL) != 0) + { + printf ("kill (%d, SIGKILL): %m\n", pid); + RETURN (EXIT_FAILURE); + } + +#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); + } + } +#else + /* Allow enough time to be sure the child died; we didn't synchronize. */ + sleep (2); +#endif + + CHECK_SIGCHLD ("killed", CLD_KILLED, SIGKILL); + + 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 (P_PID, pid, &info, WEXITED); + if (fail == -1) + { + if (errno != ECHILD) + { + printf ("waitid WEXITED on killed: %m\n"); + RETURN (EXIT_FAILURE); + } + } + else + { + printf ("waitid WEXITED returned bogus value %d\n", fail); + RETURN (EXIT_FAILURE); + } + +#undef RETURN + out: + if (spurious_sigchld) + status = EXIT_FAILURE; + signal (SIGCHLD, SIG_IGN); + kill (pid, SIGKILL); /* Make sure it's dead if we bailed early. */ + return status; +} + +#include "../test-skeleton.c" |