d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

After exhaustive discussions and some meandering and confusion, enough

Browse Source 
people are on track with the cause and effect of this, and although
fixing this severely degenerate case appears to violate the letter of
POSIX.1-200x, Bruce and I (and enough others) agree that it should be
comitted.

So, this patch generates an ENOENT error for any attempt to do a path lookup
through an empty symlink (e.g. open(), stat()).

Submitted by: "Andrey A. Chernov" <ache@nagual.pp.ru>
Reviewed by: bde
Discussed exhaustively on: freebsd-current
Previously committed to: NetBSD 4 years ago
This commit is contained in:
Matthew Dillon 2001-06-24 05:24:41 +00:00
parent 6454a61bd7
commit c7503f60c4
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sys/kern/vfs_lookup.c
View File

@ -214,6 +214,12 @@ namei(ndp)
break;
}
linklen = MAXPATHLEN - auio.uio_resid;
if (linklen == 0) {
if (ndp->ni_pathlen > 1)
zfree(namei_zone, cp);
error = ENOENT;
break;
}
if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
if (ndp->ni_pathlen > 1)
zfree(namei_zone, cp);