about summary refs log tree commit diff
path: root/io
diff options
context:
space:
mode:
Diffstat (limited to 'io')
-rw-r--r--io/Makefile2
-rw-r--r--io/tst-ttyname_r.c42
2 files changed, 43 insertions, 1 deletions
diff --git a/io/Makefile b/io/Makefile
index 4aadfbca01..18287b201a 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -66,7 +66,7 @@ tests		:= test-utime test-stat test-stat2 test-lfs tst-getcwd \
 		   tst-openat tst-unlinkat tst-fstatat tst-futimesat \
 		   tst-renameat tst-fchownat tst-fchmodat tst-faccessat \
 		   tst-symlinkat tst-linkat tst-readlinkat tst-mkdirat \
-		   tst-mknodat tst-mkfifoat
+		   tst-mknodat tst-mkfifoat tst-ttyname_r
 
 distribute	:= ftwtest-sh
 
diff --git a/io/tst-ttyname_r.c b/io/tst-ttyname_r.c
new file mode 100644
index 0000000000..8e2f30c972
--- /dev/null
+++ b/io/tst-ttyname_r.c
@@ -0,0 +1,42 @@
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.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 int temp_fd;
+
+static void
+do_prepare (void)
+{
+  char *temp_file;
+  temp_fd = create_temp_file ("tst-ttyname_r.", &temp_file);
+  if (temp_fd == -1)
+    error (1, errno, "cannot create temporary file");
+}
+
+static int
+do_test (void)
+{
+  int ret = 0;
+  char buf[sysconf (_SC_TTY_NAME_MAX) + 1];
+  int res = ttyname_r (-1, buf, sizeof (buf));
+  if (res != EBADF)
+    {
+      printf ("1st ttyname_r returned with res %d\n", res);
+      ret++;
+    }
+  res = ttyname_r (temp_fd, buf, sizeof (buf));
+  if (res != ENOTTY)
+    {
+      printf ("2nd ttyname_r returned with res %d\n", res);
+      ret++;
+    }
+  return ret;
+}