diff options
| author | J. Bruce Fields <bfields@fieldses.org> | 2006-03-20 23:24:04 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-03-20 23:24:04 -0500 |
| commit | eaa82edf20d738a7ae31f4b0a5f72f64c14a58df (patch) | |
| tree | 57c3244912dc5d15ca7a738ba7358bbd2616b1d9 /net/sunrpc/auth_gss/gss_krb5_seal.c | |
| parent | 096455a22acac06fb6d0d75f276170ab72d55ba6 (diff) | |
SUNRPC,RPCSEC_GSS: fix krb5 sequence numbers.
Use a spinlock to ensure unique sequence numbers when creating krb5 gss tokens.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/auth_gss/gss_krb5_seal.c')
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_seal.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/sunrpc/auth_gss/gss_krb5_seal.c b/net/sunrpc/auth_gss/gss_krb5_seal.c index 58f9721980e..f43311221a7 100644 --- a/net/sunrpc/auth_gss/gss_krb5_seal.c +++ b/net/sunrpc/auth_gss/gss_krb5_seal.c @@ -70,6 +70,8 @@ # define RPCDBG_FACILITY RPCDBG_AUTH #endif +spinlock_t krb5_seq_lock = SPIN_LOCK_UNLOCKED; + u32 gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text, struct xdr_netobj *token) @@ -80,6 +82,7 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text, struct xdr_netobj md5cksum = {.len = 0, .data = cksumdata}; unsigned char *ptr, *krb5_hdr, *msg_start; s32 now; + u32 seq_send; dprintk("RPC: gss_krb5_seal\n"); @@ -134,12 +137,14 @@ gss_get_mic_kerberos(struct gss_ctx *gss_ctx, struct xdr_buf *text, BUG(); } + spin_lock(&krb5_seq_lock); + seq_send = ctx->seq_send++; + spin_unlock(&krb5_seq_lock); + if ((krb5_make_seq_num(ctx->seq, ctx->initiate ? 0 : 0xff, - ctx->seq_send, krb5_hdr + 16, krb5_hdr + 8))) + seq_send, krb5_hdr + 16, krb5_hdr + 8))) goto out_err; - ctx->seq_send++; - return ((ctx->endtime < now) ? GSS_S_CONTEXT_EXPIRED : GSS_S_COMPLETE); out_err: return GSS_S_FAILURE; |