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nfsd4: nfsv4 clients should cross mountpoints
Allow NFS v4 clients to seamlessly cross mount point without have to set either the 'crossmnt' or the 'nohide' export options. Signed-Off-By: Steve Dickson <steved@redhat.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
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@ -89,6 +89,12 @@ struct raparm_hbucket {
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#define RAPARM_HASH_MASK (RAPARM_HASH_SIZE-1)
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static struct raparm_hbucket raparm_hash[RAPARM_HASH_SIZE];
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static inline int
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nfsd_v4client(struct svc_rqst *rq)
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{
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return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
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}
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/*
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* Called from nfsd_lookup and encode_dirent. Check if we have crossed
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* a mount point.
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@ -115,7 +121,8 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
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path_put(&path);
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goto out;
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}
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if ((exp->ex_flags & NFSEXP_CROSSMOUNT) || EX_NOHIDE(exp2)) {
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if (nfsd_v4client(rqstp) ||
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(exp->ex_flags & NFSEXP_CROSSMOUNT) || EX_NOHIDE(exp2)) {
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/* successfully crossed mount point */
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/*
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* This is subtle: path.dentry is *not* on path.mnt
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