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/* This testcase is part of GDB, the GNU debugger.
Copyright 2020-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include "../lib/my-syscalls.h"
#if (!defined(LEADER_DOES_EXEC) && !defined(OTHER_DOES_EXEC) \
|| defined(LEADER_DOES_EXEC) && defined(OTHER_DOES_EXEC))
# error "Exactly one of LEADER_DOES_EXEC and OTHER_DOES_EXEC must be defined."
#endif
static char *argv0;
static pthread_barrier_t barrier;
static void
do_the_exec (void)
{
char *execd_path = (char *) malloc (strlen (argv0) + sizeof ("-execd"));
sprintf (execd_path, "%s-execd", argv0);
char *argv[] = { execd_path, NULL };
printf ("Exec-ing %s\n", execd_path);
extern char **environ;
my_execve (execd_path, argv, environ);
printf ("Exec failed :(\n");
abort ();
}
static void *
thread_func (void *arg)
{
pthread_barrier_wait (&barrier);
#ifdef OTHER_DOES_EXEC
printf ("Other going in exec.\n");
do_the_exec ();
#endif
/* Just make sure the thread does not exit when the leader does the exec. */
pthread_barrier_wait (&barrier);
return NULL;
}
int
main (int argc, char *argv[])
{
argv0 = argv[0];
int ret = pthread_barrier_init (&barrier, NULL, 2);
if (ret != 0)
abort ();
pthread_t thread;
ret = pthread_create (&thread, NULL, thread_func, argv[0]);
if (ret != 0)
abort ();
pthread_barrier_wait (&barrier);
#ifdef LEADER_DOES_EXEC
printf ("Leader going in exec.\n");
do_the_exec ();
#endif
pthread_join (thread, NULL);
return 0;
}
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