X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fnetwork%2Fsendmsg.c;h=5f080007bf90e54a98ca25fbe7766ee51313a7eb;hp=5d1123f0fff8a5fd463b389e9e124eac9fc64b9b;hb=b6f99412019219eda032823030846bc4c90b7cbc;hpb=03a2f3e48caec15b1a9cebccc85328e9b8169df0

diff --git a/src/network/sendmsg.c b/src/network/sendmsg.c
index 5d1123f0..5f080007 100644
--- a/src/network/sendmsg.c
+++ b/src/network/sendmsg.c
@@ -1,12 +1,30 @@
 #include <sys/socket.h>
+#include <limits.h>
+#include <string.h>
+#include <errno.h>
 #include "syscall.h"
 #include "libc.h"
 
 ssize_t sendmsg(int fd, const struct msghdr *msg, int flags)
 {
-	ssize_t r;
-	CANCELPT_BEGIN;
-	r = socketcall(sendmsg, fd, msg, flags, 0, 0, 0);
-	CANCELPT_END;
-	return r;
+#if LONG_MAX > INT_MAX
+	struct msghdr h;
+	struct cmsghdr chbuf[1024/sizeof(struct cmsghdr)+1], *c;
+	if (msg) {
+		h = *msg;
+		h.__pad1 = h.__pad2 = 0;
+		msg = &h;
+		if (h.msg_controllen) {
+			if (h.msg_controllen > 1024) {
+				errno = ENOMEM;
+				return -1;
+			}
+			memcpy(chbuf, h.msg_control, h.msg_controllen);
+			h.msg_control = chbuf;
+			for (c=CMSG_FIRSTHDR(&h); c; c=CMSG_NXTHDR(&h,c))
+				c->__pad1 = 0;
+		}
+	}
+#endif
+	return socketcall_cp(sendmsg, fd, msg, flags, 0, 0, 0);
 }