nfsd: move V4ROOT version check to nfsd_set_fh_dentry()
This further centralizes version number checks. Signed-off-by: NeilBrown <neilb@suse.de> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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1 changed files with 7 additions and 11 deletions
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@ -116,19 +116,11 @@ static __be32 nfsd_setuser_and_check_port(struct svc_rqst *rqstp,
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return nfserrno(nfsd_setuser(&rqstp->rq_cred, exp));
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}
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static inline __be32 check_pseudo_root(struct svc_rqst *rqstp,
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struct dentry *dentry, struct svc_export *exp)
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static inline __be32 check_pseudo_root(struct dentry *dentry,
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struct svc_export *exp)
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{
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if (!(exp->ex_flags & NFSEXP_V4ROOT))
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return nfs_ok;
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/*
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* v2/v3 clients have no need for the V4ROOT export--they use
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* the mount protocl instead; also, further V4ROOT checks may be
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* in v4-specific code, in which case v2/v3 clients could bypass
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* them.
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*/
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if (!nfsd_v4client(rqstp))
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return nfserr_stale;
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/*
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* We're exposing only the directories and symlinks that have to be
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* traversed on the way to real exports:
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@ -290,11 +282,15 @@ static __be32 nfsd_set_fh_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp)
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if (dentry->d_sb->s_export_op->flags & EXPORT_OP_NOWCC)
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fhp->fh_no_wcc = true;
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fhp->fh_64bit_cookies = true;
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if (exp->ex_flags & NFSEXP_V4ROOT)
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goto out;
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break;
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case 2:
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fhp->fh_no_wcc = true;
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if (EX_WGATHER(exp))
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fhp->fh_use_wgather = true;
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if (exp->ex_flags & NFSEXP_V4ROOT)
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goto out;
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}
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return 0;
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@ -364,7 +360,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type, int access)
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* (for example, if different id-squashing options are in
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* effect on the new filesystem).
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*/
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error = check_pseudo_root(rqstp, dentry, exp);
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error = check_pseudo_root(dentry, exp);
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if (error)
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goto out;
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