From a9501d10847d7993fad2e0778fe9c11317b4f7be Mon Sep 17 00:00:00 2001
From: Guangxiong Lin <hi@gxlin.org>
Date: Thu, 1 Dec 2022 23:20:33 +0800
Subject: Simplify logic by structure

---
 util.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 util.c

(limited to 'util.c')

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;
+}
-- 
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