Date: Thu, 19 Apr 2012 14:50:57 -0400 (EDT) From: Mark Saad <msaad@about.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/167105: mount_nfs can not handle source exports wiht more then 63 chars Message-ID: <201204191850.q3JIovmr075154@bguide2.ops.about.com> Resent-Message-ID: <201204191900.q3JJ0Or9027663@freefall.freebsd.org>
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>Number: 167105
>Category: kern
>Synopsis: mount_nfs can not handle source exports wiht more then 63 chars
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Apr 19 19:00:23 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Mark Saad
>Release: FreeBSD 9.0-STABLE amd64
>Organization:
About.com
>Environment:
System: FreeBSD bguide2 9.0-STABLE FreeBSD 9.0-STABLE #2: Tue Apr 10 11:32:01 EDT 2012 root@blindness.ops.about.com:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
When using a source nfs export that has more then 63 chars total , in the combination of the source host name + the exported path mount_nfs returns ENAMETOOLONG .
>How-To-Repeat:
With the following entry in /etc/fstab
fstab entry: nyisilon2-13.grp2:/ifs/clients/www/csar884520456/files_cms-stage-BK/imagefield_default_images /mnt/csar nfs ro,tcp,intr 0 0
mount /mnt/csar faile with the following error
mount_nfs: nyisilon2-13.grp2:/ifs/clients/www/csar884520456/files_cms-stage-BK/imagefield_default_images: File name too long
>Fix:
In mount_nfs.c removing the conditional check for this on line 734 - 738 appears to remove this limitation
with no impact however am not sure why this check is in there.
/*
* if (strlen(hostp) + strlen(spec) + 1 > MNAMELEN) {
* warnx("%s:%s: %s", hostp, spec, strerror(ENAMETOOLONG));
* return (0);
* }
*/
Note this issue exists in 7-STABLE , 8-STABLE and 9-STABLE as well as their respective RELEASES
>Release-Note:
>Audit-Trail:
>Unformatted:
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