Date: Tue, 17 Nov 2009 11:46:55 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r199357 - stable/8/sys/kern Message-ID: <200911171146.nAHBktNV005395@svn.freebsd.org>
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Author: kib Date: Tue Nov 17 11:46:55 2009 New Revision: 199357 URL: http://svn.freebsd.org/changeset/base/199357 Log: MFC r199137: Detect the slashdot lookup for RENAME or REMOVE in lookup(), and return EINVAL. Modified: stable/8/sys/kern/vfs_lookup.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) stable/8/sys/netinet6/ (props changed) Modified: stable/8/sys/kern/vfs_lookup.c ============================================================================== --- stable/8/sys/kern/vfs_lookup.c Tue Nov 17 11:43:53 2009 (r199356) +++ stable/8/sys/kern/vfs_lookup.c Tue Nov 17 11:46:55 2009 (r199357) @@ -552,6 +552,12 @@ dirloop: else cnp->cn_flags &= ~ISLASTCN; + if ((cnp->cn_flags & ISLASTCN) != 0 && + cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.' && + (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) { + error = EINVAL; + goto bad; + } /* * Check for degenerate name (e.g. / or "")
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