OrionLibC
Barry Importing existing Orion LibC 03048a9 (2 years, 2 months ago)
diff --git a/unistd/isatty.c b/unistd/isatty.c
new file mode 100644
index 0000000..823019a
--- /dev/null
+++ b/unistd/isatty.c
@@ -0,0 +1,15 @@
+#include <sys/syscall.h>
+#include <errno.h>
+
+/* Check if fd refers to a terminal */
+int
+isatty(int fd)
+{
+ int ret;
+ asm volatile("int $0x80" : "=a" (ret) : "0" (SYSCALL_ISATTY),
+ "c" (1), "S" (&fd));
+ if (ret >= 0)
+ return ret;
+ errno = -ret;
+ return 0;
+}