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authorAndy Adamson <andros@citi.umich.edu>2006-01-18 17:43:24 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-18 19:20:25 -0800
commit822f1005ae1f3a4a8b136f38a6933d3f719f4c4a (patch)
tree34265fcf1cd957c7b34101b2152b4e5cc9c45086 /net/sunrpc
parentfd44527707f2697fd2959e8bdb321ae588d150e2 (diff)
downloadlinux-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.c30
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);