Archival non-working checkin of the experimental build tool.

first/bouncer

@@ -0,0 +1,32 @@
+#!/bin/sh
+set -e
+set -x
+
+logfile=/tmp/bouncer.$$
+trap "rm -f $logfile" EXIT
+
+if [ S"$1" = S"" ]; then
+	>&2 echo "bouncer: syntax error: BOUNCER_WHITELIST=... bouncer <command>"
+	exit 1
+fi
+
+strace -eopen,chdir -o $logfile -f "$@"
+
+awk -f- -F '[ "()]+' $logfile <<"EOF"
+
+BEGIN {
+	split(ENVIRON["BOUNCER_WHITELIST"], whitelist_array, " +");
+	for (i in whitelist_array)
+		whitelist[whitelist_array[i]] = 1;
+}
+
+$2 == "chdir" {
+	print "pid ", $1, " chdir: ", $3;
+}
+
+($2 == "open") && ($5 !~ /O_CREAT/) && ($7 != -1) {
+	print "pid ", $1, " open: ", $3, $7;
+}
+
+EOF
+