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| author | Andy Adamson <andros@citi.umich.edu> | 2006-01-18 17:43:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-18 19:20:25 -0800 |
| commit | 822f1005ae1f3a4a8b136f38a6933d3f719f4c4a (patch) | |
| tree | 34265fcf1cd957c7b34101b2152b4e5cc9c45086 /net/sunrpc | |
| parent | fd44527707f2697fd2959e8bdb321ae588d150e2 (diff) | |
| download | linux-822f1005ae1f3a4a8b136f38a6933d3f719f4c4a.tar.bz2 | |
[PATCH] svcrpc: gss: handle the GSS_S_CONTINUE
Kerberos context initiation is handled in a single round trip, but other
mechanisms (including spkm3) may require more, so we need to handle the
GSS_S_CONTINUE case in svcauth_gss_accept. Send a null verifier.
Signed-off-by: Andy Adamson <andros@citi.umich.edu>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index e4ada15ed856..d2ccc7e8faab 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -586,6 +586,20 @@ gss_verify_header(struct svc_rqst *rqstp, struct rsc *rsci, } static int +gss_write_null_verf(struct svc_rqst *rqstp) +{ + u32 *p; + + svc_putu32(rqstp->rq_res.head, htonl(RPC_AUTH_NULL)); + p = rqstp->rq_res.head->iov_base + rqstp->rq_res.head->iov_len; + /* don't really need to check if head->iov_len > PAGE_SIZE ... */ + *p++ = 0; + if (!xdr_ressize_check(rqstp, p)) + return -1; + return 0; +} + +static int gss_write_verf(struct svc_rqst *rqstp, struct gss_ctx *ctx_id, u32 seq) { u32 xdr_seq; @@ -876,12 +890,18 @@ svcauth_gss_accept(struct svc_rqst *rqstp, u32 *authp) case -ENOENT: goto drop; case 0: - rsci = gss_svc_searchbyctx(&rsip->out_handle); - if (!rsci) { - goto drop; + if (rsip->major_status == GSS_S_COMPLETE) { + rsci = gss_svc_searchbyctx(&rsip->out_handle); + if (!rsci) { + goto drop; + } + if (gss_write_verf(rqstp, rsci->mechctx, + GSS_SEQ_WIN)) + goto drop; + } else { + if (gss_write_null_verf(rqstp)) + goto drop; } - if (gss_write_verf(rqstp, rsci->mechctx, GSS_SEQ_WIN)) - goto drop; if (resv->iov_len + 4 > PAGE_SIZE) goto drop; svc_putu32(resv, rpc_success); |