X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Futils%2Fpintos;h=13d7e5436fbe77a79d18ac1d81b02083214fa8de;hb=b8632191cf88da4debca435c1ac834ba17428b01;hp=b18693b776f6bf1679ded0b590f1c690c9500114;hpb=c1589ebc0b6ea34d608af61bad80979abbaeb9fc;p=pintos-anon

diff --git a/src/utils/pintos b/src/utils/pintos
index b18693b..13d7e54 100755
--- a/src/utils/pintos
+++ b/src/utils/pintos
@@ -702,7 +702,13 @@ sub xsystem {
 	    my ($buf) = "";
 	    my ($boots) = 0;
 	    local ($|) = 1;
-	    while (waitpid ($pid, WNOHANG) == 0) {
+	    for (;;) {
+		if (waitpid ($pid, WNOHANG) != 0) {
+		    # Subprocess died.  Pass through any remaining data.
+		    print $buf while sysread ($in, $buf, 4096) > 0;
+		    last;
+		}
+
 		# Read and print out pipe data.
 		my ($len) = length ($buf);
 		waitpid ($pid, 0), last