diff options
| -rw-r--r-- | fs/nfsd/nfs4xdr.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index a885e97dc5f4..6cd86e0fe450 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3085,10 +3085,11 @@ static __be32 nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_export *exp) { - u32 i, nflavs; + u32 i, nflavs, supported; struct exp_flavor_info *flavs; struct exp_flavor_info def_flavs[2]; - __be32 *p; + __be32 *p, *flavorsp; + static bool report = true; if (nfserr) goto out; @@ -3112,13 +3113,17 @@ nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, } } + supported = 0; RESERVE_SPACE(4); - WRITE32(nflavs); + flavorsp = p++; /* to be backfilled later */ ADJUST_ARGS(); + for (i = 0; i < nflavs; i++) { + rpc_authflavor_t pf = flavs[i].pseudoflavor; struct rpcsec_gss_info info; - if (rpcauth_get_gssinfo(flavs[i].pseudoflavor, &info) == 0) { + if (rpcauth_get_gssinfo(pf, &info) == 0) { + supported++; RESERVE_SPACE(4 + 4 + info.oid.len + 4 + 4); WRITE32(RPC_AUTH_GSS); WRITE32(info.oid.len); @@ -3126,13 +3131,22 @@ nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, WRITE32(info.qop); WRITE32(info.service); ADJUST_ARGS(); - } else { + } else if (pf < RPC_AUTH_MAXFLAVOR) { + supported++; RESERVE_SPACE(4); - WRITE32(flavs[i].pseudoflavor); + WRITE32(pf); ADJUST_ARGS(); + } else { + if (report) + pr_warn("NFS: SECINFO: security flavor %u " + "is not supported\n", pf); } } + if (nflavs != supported) + report = false; + *flavorsp = htonl(supported); + out: if (exp) exp_put(exp); |