From: Vince Darley <vincentdarley@sourceforge.net>
Date: Thu, 8 Nov 2001 19:52:05 +0000 (+0000)
Subject: safe interp not allowed
X-Git-Tag: vfs-1-2~80
X-Git-Url: http://privyetmir.co.uk/gitweb?a=commitdiff_plain;h=5dab749414a6c17349f9596f7468d2d5dea616ab;p=tclvfs

safe interp not allowed
---

diff --git a/ChangeLog b/ChangeLog
index 325097b..523c266 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2001-11-08  Vince Darley <vincentdarley@sourceforge.net>
-	* generic/vfs.c: made code thread-safe.
+	* generic/vfs.c: made code thread-safe.  Disallow
+	safe interpreters from using vfs code since they can then
+	mess with the filesystem across all interpreters.
 
 2001-11-07  Vince Darley <vincentdarley@sourceforge.net>
 	* generic/vfs.c: all mount information is now stored in a
diff --git a/generic/vfs.c b/generic/vfs.c
index beb71e1..9c6961c 100644
--- a/generic/vfs.c
+++ b/generic/vfs.c
@@ -291,6 +291,13 @@ Vfs_Init(interp)
     if (Tcl_PkgRequire(interp, "Tcl", "8.4", 0) == NULL) {
 	return TCL_ERROR;
     }
+    /* 
+     * Safe interpreters are not allowed to modify the filesystem!
+     * (Since those modifications will affect other interpreters).
+     */
+    if (Tcl_IsSafe(interp)) {
+        return TCL_ERROR;
+    }
     if (Tcl_PkgProvide(interp, "vfs", "1.0") == TCL_ERROR) {
         return TCL_ERROR;
     }