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[PATCH] knfsd: svcrpc: gss: factor out some common wrapping code

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Factor out some common code from the integrity and privacy cases.

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>
This commit is contained in:
J.Bruce Fields 2006-10-04 02:16:06 -07:00 committed by Linus Torvalds
parent 89e63ef609
commit 3c15a48664
1 changed files with 23 additions and 20 deletions
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43
net/sunrpc/auth_gss/svcauth_gss.c
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@ -1147,6 +1147,25 @@ out:
return ret;
}
u32 *
svcauth_gss_prepare_to_wrap(struct xdr_buf *resbuf, struct gss_svc_data *gsd)
{
u32 *p;
p = gsd->body_start;
gsd->body_start = NULL;
/* move accept_stat to right place: */
memcpy(p, p + 2, 4);
/* Don't wrap in failure case: */
/* Counting on not getting here if call was not even accepted! */
if (*p != rpc_success) {
resbuf->head[0].iov_len -= 2 * 4;
return NULL;
}
p++;
return p;
}
static inline int
svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp)
{
@ -1160,17 +1179,9 @@ svcauth_gss_wrap_resp_integ(struct svc_rqst *rqstp)
int integ_offset, integ_len;
int stat = -EINVAL;
p = gsd->body_start;
gsd->body_start = NULL;
/* move accept_stat to right place: */
memcpy(p, p + 2, 4);
/* Don't wrap in failure case: */
/* Counting on not getting here if call was not even accepted! */
if (*p != rpc_success) {
resbuf->head[0].iov_len -= 2 * 4;
p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
if (p == NULL)
goto out;
}
p++;
integ_offset = (u8 *)(p + 1) - (u8 *)resbuf->head[0].iov_base;
integ_len = resbuf->len - integ_offset;
BUG_ON(integ_len % 4);
@ -1222,17 +1233,9 @@ svcauth_gss_wrap_resp_priv(struct svc_rqst *rqstp)
int offset;
int pad;
p = gsd->body_start;
gsd->body_start = NULL;
/* move accept_stat to right place: */
memcpy(p, p + 2, 4);
/* Don't wrap in failure case: */
/* Counting on not getting here if call was not even accepted! */
if (*p != rpc_success) {
resbuf->head[0].iov_len -= 2 * 4;
p = svcauth_gss_prepare_to_wrap(resbuf, gsd);
if (p == NULL)
return 0;
}
p++;
len = p++;
offset = (u8 *)p - (u8 *)resbuf->head[0].iov_base;
*p++ = htonl(gc->gc_seq);