+# It failed, but we expected that. don't dump out error logs,
+# because most users won't want to see them. But do leave
+# the working directory around.
+test_xfail() {
+ echo "$@" >&2
+ exit 78
+}
+
+# Determine what shell command will appropriately test for links.
+ln -s foo "$scratchdir/testlink"
+for cmd in test /bin/test /usr/bin/test /usr/ucb/bin/test /usr/ucb/test
+do
+ for switch in -h -L
+ do
+ if $cmd $switch "$scratchdir/testlink" 2>/dev/null
+ then
+ # how nice
+ TEST_SYMLINK_CMD="$cmd $switch"
+ # i wonder if break 2 is portable?
+ break 2
+ fi
+ done
+done
+# ok, now get rid of it
+rm "$scratchdir/testlink"
+
+
+if [ "x$TEST_SYMLINK_CMD" = 'x' ]
+then
+ test_fail "Couldn't determine how to test for symlinks"
+else
+ echo "Testing for symlinks using '$TEST_SYMLINK_CMD'"
+fi
+
+
+# Test whether something is a link, allowing for shell peculiarities
+is_a_link() {
+ # note the variable contains the first option and therefore is not quoted
+ $TEST_SYMLINK_CMD "$1"
+}
+
+
+# We need to set the umask to be reproducible. Note also that when we
+# do some daemon tests as root, we will setuid() and therefore the
+# directory has to be writable by the nobody user in some cases. The
+# best thing is probably to explicitly chmod those directories after
+# creation.
+
+umask 022