1 files changed, 67 insertions, 0 deletions
diff --git a/gnulib-tests/test-gethostname.c b/gnulib-tests/test-gethostname.c
new file mode 100644
index 0000000..6570262
--- /dev/null
+++ b/gnulib-tests/test-gethostname.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2008-2022 Free Software Foundation, Inc.
+ * Written by Simon Josefsson.
+ *
+ * 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>
+
+/* Get gethostname() declaration.  */
+#include <unistd.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (gethostname, int, (char *, size_t));
+
+/* Get HOST_NAME_MAX definition.  */
+#include <limits.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#define NOHOSTNAME "magic-gnulib-test-string"
+
+int
+main (int argc, _GL_UNUSED char *argv[])
+{
+  char buf[HOST_NAME_MAX];
+  int rc;
+
+  if (strlen (NOHOSTNAME) >= HOST_NAME_MAX)
+    {
+      printf ("HOST_NAME_MAX impossibly small?! %d\n", HOST_NAME_MAX);
+      return 2;
+    }
+
+  strcpy (buf, NOHOSTNAME);
+
+  rc = gethostname (buf, sizeof (buf));
+
+  if (rc != 0)
+    {
+      printf ("gethostname failed, rc %d errno %d\n", rc, errno);
+      return 1;
+    }
+
+  if (strcmp (buf, NOHOSTNAME) == 0)
+    {
+      printf ("gethostname left buffer untouched.\n");
+      return 1;
+    }
+
+  if (argc > 1)
+    printf ("hostname: %s\n", buf);
+
+  return 0;
+}