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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>
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1 changed files with 10 additions and 4 deletions
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@ -249,10 +249,16 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
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if (error)
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goto out;
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/* Check security flavor */
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error = check_nfsd_access(exp, rqstp);
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if (error)
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goto out;
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if (!(access & MAY_LOCK)) {
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/*
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* pseudoflavor restrictions are not enforced on NLM,
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* which clients virtually always use auth_sys for,
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* even while using RPCSEC_GSS for NFS.
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*/
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error = check_nfsd_access(exp, rqstp);
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if (error)
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goto out;
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}
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/* Finally, check access permissions. */
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error = nfsd_permission(rqstp, exp, dentry, access);
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