X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Futils%2Fpintos;h=ccf10377641baf04ee31ad679e4df626b8f16dcc;hb=000aa464d48cc64e885137e1a8040aca75e9344a;hp=079ab5a34d22e8970a631203acdf6913e2a7a4fe;hpb=94e3568f3303b757f9e4133524b647163792662d;p=pintos-anon

diff --git a/src/utils/pintos b/src/utils/pintos
index 079ab5a..ccf1037 100755
--- a/src/utils/pintos
+++ b/src/utils/pintos
@@ -492,7 +492,9 @@ config.version = 6
 guestOS = "linux"
 floppy0.present = FALSE
 memsize = $mem
+EOF
 
+    print VMX <<EOF if $serial;
 serial0.present = TRUE
 serial0.fileType = "file"
 serial0.fileName = "pintos.out"
@@ -703,7 +705,7 @@ sub xsystem {
 	    my ($boots) = 0;
 	    local ($|) = 1;
 	    for (;;) {
-		if (waitpid ($pid, WNOHANG) == 0) {
+		if (waitpid ($pid, WNOHANG) != 0) {
 		    # Subprocess died.  Pass through any remaining data.
 		    print $buf while sysread ($in, $buf, 4096) > 0;
 		    last;
@@ -711,7 +713,8 @@ sub xsystem {
 
 		# Read and print out pipe data.
 		my ($len) = length ($buf);
-		last if sysread ($in, $buf, 4096, $len) <= 0;
+		waitpid ($pid, 0), last
+		  if sysread ($in, $buf, 4096, $len) <= 0;
 		print substr ($buf, $len);
 
 		# Remove full lines from $buf and scan them for keywords.
@@ -730,8 +733,9 @@ sub xsystem {
 		    }
 		}
 	    }
+	} else {
+	    waitpid ($pid, 0);
 	}
-	waitpid ($pid, 0);
 	alarm (0);
 	&$cleanup ();
 
@@ -752,7 +756,7 @@ sub xsystem {
 sub relay_signal {
     my ($pid, $signal, $cleanup) = @_;
     kill $signal, $pid;
-    File::Temp::cleanup();
+    eval { File::Temp::cleanup() };	# Not defined in old File::Temp.
     &$cleanup ();
     $SIG{$signal} = 'DEFAULT';
     kill $signal, getpid ();