* NFS4ERR_DENIED becomes EIO?
@ 2009-02-18 21:19 Jeff Garzik
[not found] ` <499C7B53.5030802-o2qLIJkoznsdnm+yROfE0A@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Jeff Garzik @ 2009-02-18 21:19 UTC (permalink / raw)
To: linux-nfs-u79uwXL29TY76Z2rM5mHXA; +Cc: linux-fsdevel
I think I may have found a tiny NFSv4 client bug. What I am seeing:
1. On Linux NFS client (2.6.29-rc2), issue chown(1) to change the owner
of the file (causing SETATTR:OWNER to be issued)
2. My userland NFS server returns NFS4ERR_DENIED for the SETATTR op
3. Linux NFS client returns EIO (I/O error) to userland
That was a bit unexpected. I would have guessed EPERM, perhaps.
Jeff
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^ permalink raw reply [flat|nested] 3+ messages in thread[parent not found: <499C7B53.5030802-o2qLIJkoznsdnm+yROfE0A@public.gmane.org>]
* Re: NFS4ERR_DENIED becomes EIO? [not found] ` <499C7B53.5030802-o2qLIJkoznsdnm+yROfE0A@public.gmane.org> @ 2009-02-18 21:59 ` Trond Myklebust [not found] ` <1234994399.8412.206.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org> 0 siblings, 1 reply; 3+ messages in thread From: Trond Myklebust @ 2009-02-18 21:59 UTC (permalink / raw) To: Jeff Garzik; +Cc: linux-nfs-u79uwXL29TY76Z2rM5mHXA, linux-fsdevel On Wed, 2009-02-18 at 16:19 -0500, Jeff Garzik wrote: > I think I may have found a tiny NFSv4 client bug. What I am seeing: > > 1. On Linux NFS client (2.6.29-rc2), issue chown(1) to change the owner > of the file (causing SETATTR:OWNER to be issued) > > 2. My userland NFS server returns NFS4ERR_DENIED for the SETATTR op > > 3. Linux NFS client returns EIO (I/O error) to userland > > That was a bit unexpected. I would have guessed EPERM, perhaps. > > Jeff I'd put this down as a server bug, as rfc 3530 really reserves the error NFS4ERR_DENIED for the LOCK/LOCKT/LOCKU operations. In the case of a chown(), I'd expect the server to return NFS4ERR_PERM when failing because the caller is not root or the file owner. The client will then correctly translate that into an EPERM... Cheers Trond -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 3+ messages in thread
[parent not found: <1234994399.8412.206.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>]
* Re: NFS4ERR_DENIED becomes EIO? [not found] ` <1234994399.8412.206.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org> @ 2009-02-19 1:22 ` Jeff Garzik 0 siblings, 0 replies; 3+ messages in thread From: Jeff Garzik @ 2009-02-19 1:22 UTC (permalink / raw) To: Trond Myklebust; +Cc: linux-nfs-u79uwXL29TY76Z2rM5mHXA, linux-fsdevel Trond Myklebust wrote: > On Wed, 2009-02-18 at 16:19 -0500, Jeff Garzik wrote: >> I think I may have found a tiny NFSv4 client bug. What I am seeing: >> >> 1. On Linux NFS client (2.6.29-rc2), issue chown(1) to change the owner >> of the file (causing SETATTR:OWNER to be issued) >> >> 2. My userland NFS server returns NFS4ERR_DENIED for the SETATTR op >> >> 3. Linux NFS client returns EIO (I/O error) to userland >> >> That was a bit unexpected. I would have guessed EPERM, perhaps. >> >> Jeff > > I'd put this down as a server bug, as rfc 3530 really reserves the error > NFS4ERR_DENIED for the LOCK/LOCKT/LOCKU operations. > > In the case of a chown(), I'd expect the server to return NFS4ERR_PERM > when failing because the caller is not root or the file owner. The > client will then correctly translate that into an EPERM... So noted... thanks a bunch! I'll make that change. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-02-18 21:19 NFS4ERR_DENIED becomes EIO? Jeff Garzik
[not found] ` <499C7B53.5030802-o2qLIJkoznsdnm+yROfE0A@public.gmane.org>
2009-02-18 21:59 ` Trond Myklebust
[not found] ` <1234994399.8412.206.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-02-19 1:22 ` Jeff Garzik
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