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-rw-r--r--sysdeps/pthread/tst-exec3.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-exec3.c b/sysdeps/pthread/tst-exec3.c
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+/* Thread calls exec.
+ Copyright (C) 2002-2020 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <paths.h>
+#include <pthread.h>
+#include <signal.h>
+#include <spawn.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <support/xsignal.h>
+
+
+static void *
+tf (void *arg)
+{
+ execl (_PATH_BSHELL, _PATH_BSHELL, "-c", "echo $$", NULL);
+
+ puts ("execl failed");
+ exit (1);
+}
+
+
+static int
+do_test (void)
+{
+ int fd[2];
+ if (pipe (fd) != 0)
+ {
+ puts ("pipe failed");
+ exit (1);
+ }
+
+ /* Not interested in knowing when the pipe is closed. */
+ xsignal (SIGPIPE, SIG_IGN);
+
+ pid_t pid = fork ();
+ if (pid == -1)
+ {
+ puts ("fork failed");
+ exit (1);
+ }
+
+ if (pid == 0)
+ {
+ /* Use the fd for stdout. This is kind of ugly because it
+ substitutes the fd of stdout but we know what we are doing
+ here... */
+ if (dup2 (fd[1], STDOUT_FILENO) != STDOUT_FILENO)
+ {
+ puts ("dup2 failed");
+ exit (1);
+ }
+
+ close (fd[0]);
+
+ pthread_t th;
+ if (pthread_create (&th, NULL, tf, NULL) != 0)
+ {
+ puts ("create failed");
+ exit (1);
+ }
+
+ if (pthread_join (th, NULL) == 0)
+ {
+ puts ("join succeeded!?");
+ exit (1);
+ }
+
+ puts ("join returned!?");
+ exit (1);
+ }
+
+ close (fd[1]);
+
+ char buf[200];
+ ssize_t n;
+ bool seen_pid = false;
+ while (TEMP_FAILURE_RETRY ((n = read (fd[0], buf, sizeof (buf)))) > 0)
+ {
+ /* We only expect to read the PID. */
+ char *endp;
+ long int rpid = strtol (buf, &endp, 10);
+
+ if (*endp != '\n')
+ {
+ printf ("didn't parse whole line: \"%s\"\n", buf);
+ exit (1);
+ }
+ if (endp == buf)
+ {
+ puts ("read empty line");
+ exit (1);
+ }
+
+ if (rpid != pid)
+ {
+ printf ("found \"%s\", expected PID %ld\n", buf, (long int) pid);
+ exit (1);
+ }
+
+ if (seen_pid)
+ {
+ puts ("found more than one PID line");
+ exit (1);
+ }
+ seen_pid = true;
+ }
+
+ close (fd[0]);
+
+ int status;
+ int err = waitpid (pid, &status, 0);
+ if (err != pid)
+ {
+ puts ("waitpid failed");
+ exit (1);
+ }
+
+ if (!seen_pid)
+ {
+ puts ("didn't get PID");
+ exit (1);
+ }
+
+ return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"