X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/f819b74dce7f569980e840390925f5294fabeaf0..ff1e93acf2626d2531a97de3b54bce9b5a37bcb5:/bres.c

diff --git a/bres.c b/bres.c
index 8a73aaf..4efea3c 100644
--- a/bres.c
+++ b/bres.c
@@ -49,6 +49,7 @@
 
 #include "alloc.h"
 #include "bres.h"
+#include "mdup.h"
 #include "report.h"
 #include "sel.h"
 
@@ -716,6 +717,7 @@ static int start(bres_server *rs)
 {
   int rfd[2], cfd[2];
   pid_t kid;
+  mdup_fd md[2];
 
   /* --- Make the pipes --- */
 
@@ -733,12 +735,10 @@ static int start(bres_server *rs)
     close(rfd[0]);
 
     if (server) {
-      dup2(cfd[0], STDIN_FILENO);
-      dup2(rfd[1], STDOUT_FILENO);
-      close(cfd[0]);
-      close(rfd[1]);
-      execlp(server, server, (char *)0);
-      child(STDOUT_FILENO, STDIN_FILENO);
+      md[0].cur = cfd[0]; md[0].want = STDIN_FILENO;
+      md[1].cur = rfd[1]; md[1].want = STDOUT_FILENO;
+      if (mdup(md, 2) ||  execlp(server, server, (char *)0))
+	child(STDOUT_FILENO, STDIN_FILENO);
     } else
       child(rfd[1], cfd[0]);
     _exit(1);