From bf70f6f1face8e36030544a74e5ea04903df16cb Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@uclibc-ng.org>
Date: Wed, 8 Jun 2016 21:49:04 +0200
Subject: test: add new mmap tests from glibc

Rename mmap2 test as this is a ARM specific test, only
execute on ARM systems. Add more new tests from glibc.
---
 test/mmap/tst-mmap-offend.c | 86 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 test/mmap/tst-mmap-offend.c

(limited to 'test/mmap/tst-mmap-offend.c')

diff --git a/test/mmap/tst-mmap-offend.c b/test/mmap/tst-mmap-offend.c
new file mode 100644
index 000000000..19732e620
--- /dev/null
+++ b/test/mmap/tst-mmap-offend.c
@@ -0,0 +1,86 @@
+/* Test case for bug with mmap stdio read past end of file.  */
+
+#include <stdio.h>
+#include <error.h>
+#include <errno.h>
+
+static void do_prepare (void);
+#define PREPARE(argc, argv) do_prepare ()
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#include <test-skeleton.c>
+
+static char *temp_file;
+
+static const char text1[] = "hello\n";
+
+static void
+do_prepare (void)
+{
+  int temp_fd = create_temp_file ("tst-mmap-offend.", &temp_file);
+  if (temp_fd == -1)
+    error (1, errno, "cannot create temporary file");
+  else
+    {
+      ssize_t cc = write (temp_fd, text1, sizeof text1 - 1);
+      if (cc != sizeof text1 - 1)
+	error (1, errno, "cannot write to temporary file");
+    }
+  close (temp_fd);
+}
+
+static int
+do_test (void)
+{
+  unsigned char buffer[8192];
+  int result = 0;
+  FILE *f = fopen (temp_file, "rm");
+  size_t cc;
+
+  if (f == NULL)
+    {
+      perror (temp_file);
+      return 1;
+    }
+
+  cc = fread (buffer, 1, sizeof (buffer), f);
+  printf ("fread %zu: \"%.*s\"\n", cc, (int) cc, buffer);
+  if (cc != sizeof text1 - 1)
+    {
+      perror ("fread");
+      result = 1;
+    }
+
+  if (fseek (f, 2048, SEEK_SET) != 0)
+    {
+      perror ("fseek off end");
+      result = 1;
+    }
+
+  if (fread (buffer, 1, sizeof (buffer), f) != 0
+      || ferror (f) || !feof (f))
+    {
+      printf ("after fread error %d eof %d\n",
+	      ferror (f), feof (f));
+      result = 1;
+    }
+
+  printf ("ftell %ld\n", ftell (f));
+
+  if (fseek (f, 0, SEEK_SET) != 0)
+    {
+      perror ("fseek rewind");
+      result = 1;
+    }
+
+  cc = fread (buffer, 1, sizeof (buffer), f);
+  printf ("fread after rewind %zu: \"%.*s\"\n", cc, (int) cc, buffer);
+  if (cc != sizeof text1 - 1)
+    {
+      perror ("fread after rewind");
+      result = 1;
+    }
+
+  fclose (f);
+  return result;
+}
-- 
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