addrcheck: Don't spew userv error messages at SMTP clients.

[qmail] / addrcheck.c

diff --git a/addrcheck.c b/addrcheck.c
index 496c5dd..0b189a7 100644 (file)
--- a/addrcheck.c
+++ b/addrcheck.c
@@ -5,6 +5,7 @@
 #include "addrcheck.h"
 #include <errno.h>
 #include <unistd.h>
+#include <fcntl.h>
 
 /* #define DEBUG */
 #ifdef DEBUG
@@ -131,9 +132,10 @@ static int localprobe(int cdb, const char *sender,
     if (pipe(p) || (kid = fork()) == -1)
       return (-1);
     if (!kid) {
+      close(0); open("/dev/null", O_RDONLY);
       dup2(p[1], 1);
-      close(p[0]);
-      close(p[1]);
+      close(2); open("/dev/null", O_WRONLY);
+      close(p[0]); close(p[1]);
       execl("/usr/bin/userv", "/usr/bin/userv",
            "-f", "stdin=/dev/null",
            u.s, serv.s,