From 5a54774474f43ae29716751d6415563a59b92c7d Mon Sep 17 00:00:00 2001
From: pk33 <pk33@pk33.space>
Date: Mon, 11 Nov 2024 18:06:18 +0100
Subject: tidying up and basic input

---
 src/system33.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/system33.c

(limited to 'src/system33.c')

diff --git a/src/system33.c b/src/system33.c
new file mode 100644
index 0000000..c533503
--- /dev/null
+++ b/src/system33.c
@@ -0,0 +1,50 @@
+#include "sys/ioctl.h"
+#include "errno.h"
+
+#include "stdarg.h"
+#include "stdio.h"
+#include "unistd.h"
+#include "signal.h"
+#include "string.h"
+
+#include "types33.h"
+
+
+Error e33_ioctl( Size fd, unsigned long req, void *arg )
+{
+  Size ret;
+
+  do {
+      ret = ioctl(fd, req, arg);
+  } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+
+  return ret;
+}
+
+Boolean e33_strcmp( String s1, String s2 )
+{
+  while( (*s1 != '\0') && (*s2 != '\0') )
+  {
+    if( (*s1++) != (*s2++) ) {
+      return E33_FALSE;
+    }
+  }
+
+  return E33_TRUE;
+}
+
+Error e33_has_signal(Size signo)
+{
+  struct sigaction sact = {0};
+  sigaction(signo, 0, &sact);
+  return sact.sa_handler != 0;
+}
+
+Error e33_set_signal(Size signo, void(*sig_handler)(int))
+{
+  struct sigaction sact = {0};
+  sact.sa_handler = sig_handler;
+  sigemptyset(&sact.sa_mask);
+  sact.sa_flags = SA_RESTART;
+  return sigaction(signo, &sact, NULL);
+}
-- 
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