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Diffstat (limited to 'src/unistd/ttyname.c')
-rw-r--r--src/unistd/ttyname.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/unistd/ttyname.c b/src/unistd/ttyname.c
new file mode 100644
index 00000000..0f3e1141
--- /dev/null
+++ b/src/unistd/ttyname.c
@@ -0,0 +1,14 @@
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+
+char *ttyname(int fd)
+{
+ static char buf[TTY_NAME_MAX];
+ int result;
+ if ((result = ttyname_r(fd, buf, sizeof buf))) {
+ errno = result;
+ return NULL;
+ }
+ return buf;
+}