From: Sven M. Hallberg <pesco@khjk.org>
Date: Fri, 29 Aug 2014 16:51:12 +0000 (+0200)
Subject: add ioctl as a wrapper around ioctlsocket
X-Git-Url: https://git.meshlink.io/?a=commitdiff_plain;h=bce1f237f898509a4ea59fa29b290738be9b32a8;p=catta

add ioctl as a wrapper around ioctlsocket
---

diff --git a/src/compat/windows/wincompat.c b/src/compat/windows/wincompat.c
index 1a05d9f..67cf853 100644
--- a/src/compat/windows/wincompat.c
+++ b/src/compat/windows/wincompat.c
@@ -190,6 +190,24 @@ ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags)
     return bytessent;
 }
 
+int ioctl(int d, unsigned long request, int *p)
+{
+    u_long arg = 0;
+
+    if(ioctlsocket(d, request, &arg) == SOCKET_ERROR) {
+        errno = wsa_errno();
+        return -1;
+    }
+
+    if(arg > INT_MAX) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    *p = arg;
+    return 0;
+}
+
 int uname(struct utsname *buf)
 {
     SYSTEM_INFO si;
diff --git a/src/compat/windows/wincompat.h b/src/compat/windows/wincompat.h
index f76dbc4..b502022 100644
--- a/src/compat/windows/wincompat.h
+++ b/src/compat/windows/wincompat.h
@@ -77,6 +77,12 @@ ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
 #endif
 
 
+// Windows doesn't have ioctl but offers ioctlsocket for some socket-related
+// functions. Unfortunately, argument types differ, so we implement a
+// (restricted) wrapper.
+int ioctl(int d, unsigned long request, int *p);
+
+
 // Windows logically doesn't have uname, so we supply a replacement.
 
 struct utsname {