1 files changed, 94 insertions, 0 deletions
diff --git a/gdb/testsuite/gdb.reverse/recvmsg-reverse.c b/gdb/testsuite/gdb.reverse/recvmsg-reverse.c
new file mode 100644
index 00000000000..4dd9cfd9909
--- /dev/null
+++ b/gdb/testsuite/gdb.reverse/recvmsg-reverse.c
@@ -0,0 +1,94 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2008-2015 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/>.  */
+
+#define _GNU_SOURCE
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+void
+marker1 (void)
+{
+}
+
+void
+marker2 (void)
+{
+}
+
+char wdata[] = "abcdef";
+
+struct iovec wv[1] = {
+  { wdata, 6 },
+};
+
+char wc[CMSG_SPACE (sizeof (struct ucred)) + CMSG_SPACE (sizeof (int))];
+
+struct msghdr wmsg = {
+  0, 0,
+  wv, 1,
+  wc, sizeof wc,
+  0,
+};
+
+char rdata[5] = "xxxx";
+
+struct iovec rv[2] = {
+  {&rdata[2], 2},
+  {&rdata[0], 2},
+};
+
+char rc[CMSG_SPACE (sizeof (struct ucred)) + 7];
+
+struct msghdr rmsg = {
+  0, 0,
+  rv, 2,
+  rc, sizeof rc,
+  0,
+};
+
+int fds[2];
+
+int
+main (void)
+{
+  int itrue = 1;
+  /* prepare cmsg to send */
+  struct cmsghdr *cm1 = CMSG_FIRSTHDR (&wmsg);
+  cm1->cmsg_len = CMSG_LEN (sizeof (struct ucred));
+  cm1->cmsg_level = AF_UNIX;
+  cm1->cmsg_type = SCM_CREDENTIALS;
+  struct ucred *uc = (void *) CMSG_DATA (cm1);
+  uc->pid = getpid ();
+  uc->uid = getuid ();
+  uc->gid = getgid ();
+  struct cmsghdr *cm2 = CMSG_NXTHDR (&wmsg, cm1);
+  cm2->cmsg_len = CMSG_LEN (sizeof (int));
+  cm2->cmsg_level = AF_UNIX;
+  cm2->cmsg_type = SCM_RIGHTS;
+  int *pfd = (void *) CMSG_DATA (cm2);
+  *pfd = 2;
+  /* do the syscalls */
+  marker1 ();
+  socketpair (AF_UNIX, SOCK_DGRAM, 0, fds);
+  setsockopt (fds[0], SOL_SOCKET, SO_PASSCRED, &itrue, sizeof itrue);
+  sendmsg (fds[1], &wmsg, 0);
+  recvmsg (fds[0], &rmsg, 0);
+  marker2 ();
+  return 0;
+}