2 files changed, 156 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.base/interrupt-daemon.c b/gdb/testsuite/gdb.base/interrupt-daemon.c
new file mode 100644
index 0000000..5074d7b
--- /dev/null
+++ b/gdb/testsuite/gdb.base/interrupt-daemon.c
@@ -0,0 +1,67 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2017 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 <stdlib.h>
+#include <assert.h>
+
+static void
+daemon_main (void)
+{
+}
+
+int
+main ()
+{
+  pid_t child;
+
+  alarm (60);
+
+  /* Normally we're a progress group leader at this point, so can't
+     create a session.  Fork so the child can create a new
+     session.  */
+  child = fork ();
+  if (child == -1)
+    return 1;
+  else if (child != 0)
+    return 0;
+  else
+    {
+      /* In child.  Switch to a new session.  */
+      pid_t session = setsid ();
+      if (session == -1)
+	return 1;
+
+      /* Fork again, so that the grand child (what we want to debug)
+	 can't accidentally acquire a controlling terminal, because
+	 it's not a session leader.  We're not opening any file here,
+	 but this is representative of what daemons do.  */
+      child = fork ();
+      if (child == -1)
+	return 1;
+      else if (child != 0)
+	return 0;
+
+      /* In grandchild.  */
+      daemon_main ();
+
+      while (1)
+	sleep (1);
+    }
+
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.base/interrupt-daemon.exp b/gdb/testsuite/gdb.base/interrupt-daemon.exp
new file mode 100644
index 0000000..ca3eecb
--- /dev/null
+++ b/gdb/testsuite/gdb.base/interrupt-daemon.exp
@@ -0,0 +1,89 @@
+# Copyright 2017 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/>.
+
+# Make sure that we can interrupt an inferior that forks and moves to
+# its own session.
+
+standard_testfile
+
+if {[build_executable "failed to build" $testfile $srcfile {debug}]} {
+    return -1
+}
+
+# The test proper.
+
+proc do_test {} {
+    global binfile
+    global gdb_prompt
+
+    clean_restart $binfile
+
+    gdb_test "set follow-fork-mode child" ".*"
+
+    if ![runto "daemon_main"] {
+	fail "can't run to daemon_main function"
+	return
+    }
+
+    with_test_prefix "fg" {
+	global gdb_prompt
+
+	set test "continue"
+	gdb_test_multiple $test $test {
+	    -re "Continuing" {
+		pass $test
+	    }
+	}
+
+	after 200
+
+	send_gdb "\003"
+
+	set test "ctrl-c stops process"
+	gdb_test_multiple "" $test {
+	    -re "received signal SIGINT.*\r\n$gdb_prompt $" {
+		pass $test
+	    }
+	}
+    }
+
+    with_test_prefix "bg" {
+
+	set test "continue&"
+	gdb_test_multiple "continue&" $test {
+	    -re "Continuing\\.\r\n$gdb_prompt " {
+		pass $test
+	    }
+	}
+
+	after 200
+
+	set test "interrupt"
+	gdb_test_multiple $test $test {
+	    -re "$gdb_prompt " {
+		pass $test
+	    }
+	}
+
+	set test "interrupt cmd stops process"
+	gdb_test_multiple "" $test {
+	    -re "received signal SIGINT" {
+		pass $test
+	    }
+	}
+    }
+}
+
+do_test