From: Gerben Wierda <G.C.Th.Wierda@AWT.nl>
Date: Fri, 20 Nov 1998 18:39:06 +0000 (+0200)
Subject: Permission testing is tricky when we have too much power.
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=846f25a3508eb6a488aff23d772d9cd4768661b5;p=p5sagit%2Fp5-mst-13.2.git

Permission testing is tricky when we have too much power.
Problem reported in
Subject: Test results for perl5.005_53 under NEXTSTEP 3.3 (intel)
To: perlbug@perl.com
Message-ID: <MLIST_9811201533.AA22148@AWT.nl>

p4raw-id: //depot/cfgperl@2263
---

diff --git a/t/op/filetest.t b/t/op/filetest.t
index 13c5917..9228b57 100644
--- a/t/op/filetest.t
+++ b/t/op/filetest.t
@@ -26,19 +26,30 @@ print "ok 5\n";
 
 # make sure TEST is r-x
 eval { chmod 0555, 'TEST' };
-if ($@) {
-  print "#[$@]\nok 6 # skipped\n";
+$bad_chmod = $@;
+
+$oldeuid = $>;		# root can read and write anything
+eval '$> = 1';		# so switch uid (may not be implemented)
+
+print "# oldeuid = $oldeuid, euid = $>\n";
+
+if ($bad_chmod) {
+    print "#[$@]\nok 6 #skipped\n";
 }
 else {
-  print "not " if -w 'TEST';
-  print "ok 6\n";
+    print "not " if -w 'TEST';
+    print "ok 6\n";
 }
 
-# Scripts are not -x everywhere.
+# Scripts are not -x everywhere so cannot test that.
 
 print "not " unless -r 'op';
 print "ok 7\n";
 
+eval '$> = $oldeuid';	# switch uid back (may not be implemented)
+
+# this would fail for the euid 1
+# (unless we have unpacked the source code as uid 1...)
 print "not " unless -w 'op';
 print "ok 8\n";