Check syscall return values.

[exim.git] / src / src / transports / pipe.c

diff --git a/src/src/transports/pipe.c b/src/src/transports/pipe.c
index 32a7bfa7c8bfb751dd1be2c8f24a867aaaefedaf..fe94e8575f2c967b63e6eab8b6bb6d92f1f87c86 100644 (file)
--- a/src/src/transports/pipe.c
+++ b/src/src/transports/pipe.c
@@ -749,14 +749,19 @@ if (outpid == 0)
   while ((rc = read(fd_out, big_buffer, big_buffer_size)) > 0)
     {
     if (addr->return_file >= 0)
-      write(addr->return_file, big_buffer, rc);
+      if(write(addr->return_file, big_buffer, rc) != rc)
+        DEBUG(D_transport) debug_printf("Problem writing to return_file\n");
     count += rc;
     if (count > ob->max_output)
       {
-      uschar *message = US"\n\n*** Too much output - remainder discarded ***\n";
       DEBUG(D_transport) debug_printf("Too much output from pipe - killed\n");
       if (addr->return_file >= 0)
-        write(addr->return_file, message, Ustrlen(message));
+       {
+        uschar *message = US"\n\n*** Too much output - remainder discarded ***\n";
+        rc = Ustrlen(message);
+        if(write(addr->return_file, message, rc) != rc)
+          DEBUG(D_transport) debug_printf("Problem writing to return_file\n");
+       }
       killpg(pid, SIGKILL);
       break;
       }