Date: Fri, 13 Aug 2004 23:35:42 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Kris Kennaway <kris@obsecurity.org>, kientzle@FreeBSD.org Cc: current@FreeBSD.org Subject: Re: Spurious EACCES errors from apache Message-ID: <20040814063541.GA43063@xor.obsecurity.org> In-Reply-To: <20040813235434.GA75875@xor.obsecurity.org> References: <20040813235434.GA75875@xor.obsecurity.org>
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[-- Attachment #1 --] On Fri, Aug 13, 2004 at 04:54:34PM -0700, Kris Kennaway wrote: > Since a recent world+kernel update, apache is frequently reporting > errors like: > > [Fri Aug 13 23:29:19 2004] [error] [client 216.136.204.42] (13)Permission denied: access to /errorlogs/i386-4-packages-latest/All/pkgconfig-0.15.0_1.tgz failed because search permissions are missing on a component of the path > > There is nothing wrong with the permissions of that path, and > refetching the same file will usually succeed. > > Did someone break something in the kernel, perhaps some recent VM > changes? With help from rwatson we tracked it down to bsdtar, which seems to be setting and resetting permissions on every path component when extracting a tarball. This is bad when some of those directories already exist, because other processes trying to access files in the directory hierarchy may lose the race and fail. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (FreeBSD) iD8DBQFBHbK9Wry0BWjoQKURAiUqAJ4pknj4hpj4zQ+Tz8rQX0ch5TBn1gCglk7H c4mN4cFlfLGYDlz5c1a/BW4= =ws7g -----END PGP SIGNATURE-----
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