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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-06-08 21:49:04 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-06-08 21:49:04 +0200
commitbf70f6f1face8e36030544a74e5ea04903df16cb (patch)
tree5ac258f817f4993ef619d4e09db2164233c3f712 /test/mmap/tst-mmap-offend.c
parent4fee9155f396cb2bcfe707f78aa4332837520f93 (diff)
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.
Diffstat (limited to 'test/mmap/tst-mmap-offend.c')
-rw-r--r--test/mmap/tst-mmap-offend.c86
1 files changed, 86 insertions, 0 deletions
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;
+}