1 files changed, 112 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/tst-syscall-restart.c b/sysdeps/unix/sysv/linux/tst-syscall-restart.c
new file mode 100644
index 0000000000..84a8a41b5c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/tst-syscall-restart.c
@@ -0,0 +1,112 @@
+/* Test if a syscall is correctly restarted.
+   Copyright (C) 2024 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <support/xsignal.h>
+#include <support/check.h>
+#include <support/process_state.h>
+#include <support/xunistd.h>
+#include <support/xthread.h>
+#include <sys/wait.h>
+
+static int
+check_pid (pid_t pid)
+{
+  /* Wait until the child has called pause and it blocking on kernel.  */
+  support_process_state_wait (pid, support_process_state_sleeping);
+
+  TEST_COMPARE (kill (pid, SIGSTOP), 0);
+
+  /* Adding process_state_tracing_stop ('t') allows the test to work under
+     trace programs such as ptrace.  */
+  support_process_state_wait (pid, support_process_state_stopped
+				   | support_process_state_tracing_stop);
+
+  TEST_COMPARE (kill (pid, SIGCONT), 0);
+
+  enum support_process_state state
+    = support_process_state_wait (pid, support_process_state_sleeping
+				       | support_process_state_zombie);
+
+  TEST_COMPARE (state, support_process_state_sleeping);
+
+  TEST_COMPARE (kill (pid, SIGTERM), 0);
+
+  siginfo_t info;
+  TEST_COMPARE (waitid (P_PID, pid, &info, WEXITED), 0);
+  TEST_COMPARE (info.si_signo, SIGCHLD);
+  TEST_COMPARE (info.si_code, CLD_KILLED);
+  TEST_COMPARE (info.si_status, SIGTERM);
+  TEST_COMPARE (info.si_pid, pid);
+
+  return 0;
+}
+
+static void *
+tf (void *)
+{
+  pause ();
+  return NULL;
+}
+
+static void
+child_mt (void)
+{
+  /* Let only the created thread to handle signals.  */
+  sigset_t set;
+  sigfillset (&set);
+  xpthread_sigmask (SIG_BLOCK, &set, NULL);
+
+  sigdelset (&set, SIGSTOP);
+  sigdelset (&set, SIGCONT);
+  sigdelset (&set, SIGTERM);
+
+  pthread_attr_t attr;
+  xpthread_attr_init (&attr);
+  TEST_COMPARE (pthread_attr_setsigmask_np (&attr, &set), 0);
+
+  xpthread_join (xpthread_create (&attr, tf, NULL));
+}
+
+static void
+do_test_syscall (bool multithread)
+{
+  pid_t pid = xfork ();
+  if (pid == 0)
+    {
+      if (multithread)
+	child_mt ();
+      else
+	pause ();
+      _exit (127);
+    }
+
+  check_pid (pid);
+}
+
+static int
+do_test (void)
+{
+  /* Check for both single and multi thread, since they use different syscall
+     mechanisms.  */
+  do_test_syscall (false);
+  do_test_syscall (true);
+
+  return 0;
+}
+
+#include <support/test-driver.c>