1 files changed, 22 insertions, 0 deletions
diff --git a/util.c b/util.c
new file mode 100644
index 0000000..a44cc66
--- /dev/null
+++ b/util.c
@@ -0,0 +1,22 @@
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+
+#include "util.h"
+
+void panic(const char *msg)
+{
+ perror(msg);
+ exit(EXIT_FAILURE);
+}
+
+int setblocking(int fd, bool blocking)
+{
+ u_long mode = blocking ? 0 : 1;
+ if (ioctl(fd, FIONBIO, &mode) == -1)
+ return ERROR;
+
+ return OK;
+}