Date: Wed, 12 Jun 1996 13:57:26 +0200 From: Zahemszky Gabor <zgabor@code.hu> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/1314: rmdir(1)/rmdir(2) Message-ID: <199606121157.NAA00494@zg.CoDe.hu> Resent-Message-ID: <199606121210.FAA28270@freefall.freebsd.org>
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>Number: 1314
>Category: bin
>Synopsis: rmdir(1)/rmdir(2)
>Confidential: yes
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Jun 12 05:10:03 PDT 1996
>Last-Modified:
>Originator: Zahemszky Gabor
>Organization:
>Release: FreeBSD 2.1.0-RELEASE i386
>Environment:
2.1.0-Release from Walnut Creek CD
>Description:
The rmdir(1) command cannot remove a directory with linknumber>2.
With the link(2) system call, the superuser can make a hard link
to a directory, and after it, rmdir failes.
(Opps, from the source, I've found that the rmdir(2) syscall has
this bug.)
>How-To-Repeat:
$ cd /tmp
$ mkdir lo
$ link lo lolo
$ rmdir lo
rmdir: lo: Directory not empty
/* And the link source: */
#include <stdlib.h>
#include <errno.h>
main( argc, argv )
int argc;
char *argv[];
{
if ( link( argv[ 1 ], argv[ 2 ] ) < 0 ) {
perror( "link failed" );
return( errno );
}
return( 0 );
}
/* end */
>Fix:
>Audit-Trail:
>Unformatted:
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