Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!eecae!cps3xx!usenet
From: usenet@cps3xx.UUCP (Usenet file owner)
Newsgroups: comp.os.minix
Subject: MINIX1.2 rm-command
Keywords: MINIX1.2 (640K), rm-command fix
Message-ID: <1838@cps3xx.UUCP>
Date: 15 Feb 89 12:32:07 GMT
Expires: 15 Mar 89 05:00:00 GMT
References: none
Reply-To: rattan@frith.egr.msu.edu ()
Organization: Michigan State University
Lines: 31


MINIX 1.2 (640K-PC) is being used to teach the OS course. It was
observed that the 'rm' command is willing to remove any file in the
system by switching over to interactive mode, when one is logged in as
ast (not root or su).

	$ rm /etc/passwd
	rm: remove /etc/passwd (mode = 644) ?

This was fixed by patching the file commands/rm.c and installing the
recompiled rm in /bin. The cdiff is given below.

-- ishwar rattan (rattan@frith.egr.msu.edu)
-------------------------------------------------------------
*** rm.c.old ***
--- rm.c ---
*** 105-112 ***
else {
   if (access(name, 2) && !fflag) {

--- 105-113 ---
else {
   if (access(name, 2) && !fflag) {
      stderr3("rm: ", name, " not removed\n");
      /* stderr3("rm: remove", name, " ( mode = ");
       * octal(s.st_mode & 0777);
       * std_err(") ? ");
       * if ( !confirm()) */
       return;
     }
---------------------------------------------------------------