On Mon, Nov 03, 2014 at 11:48:23AM +0000, David Drysdale wrote: > Add a new O_BENEATH flag for openat(2) which restricts the > provided path, rejecting (with -EACCES) paths that are not beneath > the provided dfd. In particular, reject: > - paths that contain .. components > - paths that begin with / > - symlinks that have paths as above.
Yecch... The degree of usefulness aside (and I'm not convinced that it is non-zero), WTF pass one bit out of nameidata->flags in a separate argument? Through the mutual recursion, no less... And then you are not even attempting to detect symlinks that are not followed by interpretation of _any_ pathname. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
