1 files changed, 62 insertions, 0 deletions
diff --git a/src/gl/tests/test-recvfrom.c b/src/gl/tests/test-recvfrom.c
new file mode 100644
index 0000000..ac1228b
--- /dev/null
+++ b/src/gl/tests/test-recvfrom.c
@@ -0,0 +1,62 @@
+/* Test the recvfrom() function.
+   Copyright (C) 2011-2021 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 <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <sys/socket.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (recvfrom, ssize_t,
+                 (int, void *, size_t, int,
+                  struct sockaddr *, socklen_t *));
+
+#include <errno.h>
+#include <netinet/in.h>
+#include <unistd.h>
+
+#include "sockets.h"
+#include "macros.h"
+
+int
+main (void)
+{
+  (void) gl_sockets_startup (SOCKETS_1_1);
+
+  /* Test behaviour for invalid file descriptors.  */
+  {
+    char byte;
+    struct sockaddr_in addr;
+    socklen_t addrlen = sizeof (addr);
+
+    errno = 0;
+    ASSERT (recvfrom (-1, &byte, 1, 0, (struct sockaddr *) &addr, &addrlen)
+            == -1);
+    ASSERT (errno == EBADF);
+  }
+  {
+    char byte;
+    struct sockaddr_in addr;
+    socklen_t addrlen = sizeof (addr);
+
+    close (99);
+    errno = 0;
+    ASSERT (recvfrom (99, &byte, 1, 0, (struct sockaddr *) &addr, &addrlen)
+            == -1);
+    ASSERT (errno == EBADF);
+  }
+
+  return 0;
+}