From: Fredrik Tolf <fredrik@dolda2000.com>
Date: Wed, 17 Dec 2008 02:16:43 +0000 (+0100)
Subject: Use SOCK_SEQPACKET between processes to ensure EOF receipt. Probably only works on... 
X-Git-Tag: 0.1~134
X-Git-Url: http://www.dolda2000.com/gitweb/?p=ashd.git;a=commitdiff_plain;h=820f91371d71ceeef86ecb141c86763065397e85

Use SOCK_SEQPACKET between processes to ensure EOF receipt. Probably only works on Linux, however.
---

diff --git a/lib/proc.c b/lib/proc.c
index f7b0d9b..efd2767 100644
--- a/lib/proc.c
+++ b/lib/proc.c
@@ -35,7 +35,7 @@ int stdmkchild(char **argv)
     pid_t pid;
     int fd[2];
     
-    if(socketpair(PF_UNIX, SOCK_DGRAM, 0, fd))
+    if(socketpair(PF_UNIX, SOCK_SEQPACKET, 0, fd))
 	return(-1);
     if((pid = fork()) < 0)
 	return(-1);
@@ -98,8 +98,10 @@ int recvfd(int sock, char **data, size_t *datalen)
     msg.msg_controllen = sizeof(cbuf);
     
     ret = recvmsg(sock, &msg, 0);
-    if(ret < 0) {
+    if(ret <= 0) {
 	free(buf);
+	if(ret == 0)
+	    errno = 0;
 	return(-1);
     }