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knfsd: nfsd: allow auth_sys nlm on rpcsec_gss exports 

Our clients (like other clients, as far as I know) use only auth_sys for nlm,
even when using rpcsec_gss for the main nfs operations.

Administrators that want to deny non-kerberos-authenticated locking requests
will need to turn off NFS protocol versions less than 4....

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
J. Bruce Fields 2007-07-17 04:04:52 -07:00 committed by Linus Torvalds
parent 4796f45740
commit 9091224f3c
1 changed files with 10 additions and 4 deletions
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14
fs/nfsd/nfsfh.c
View File

@ -249,10 +249,16 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
if (error)
goto out;
/* Check security flavor */
error = check_nfsd_access(exp, rqstp);
if (error)
goto out;
if (!(access & MAY_LOCK)) {
/*
* pseudoflavor restrictions are not enforced on NLM,
* which clients virtually always use auth_sys for,
* even while using RPCSEC_GSS for NFS.
*/
error = check_nfsd_access(exp, rqstp);
if (error)
goto out;
}
/* Finally, check access permissions. */
error = nfsd_permission(rqstp, exp, dentry, access);