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nfsd4: don't try to map gid's in generic rpc code

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For nfsd we provide users the option of mapping uid's to server-side
supplementary group lists.  That makes sense for nfsd, but not
necessarily for other rpc users (such as the callback client).

So move that lookup to svcauth_unix_set_client, which is a
program-specific method.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
J. Bruce Fields 2009-10-20 18:51:34 -04:00
parent efe0cb6d5a
commit dc83d6e27f
1 changed files with 30 additions and 23 deletions
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53
net/sunrpc/svcauth_unix.c
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@ -655,23 +655,25 @@ static struct unix_gid *unix_gid_lookup(uid_t uid)
return NULL;
}
static int unix_gid_find(uid_t uid, struct group_info **gip,
struct svc_rqst *rqstp)
static struct group_info *unix_gid_find(uid_t uid, struct svc_rqst *rqstp)
{
struct unix_gid *ug = unix_gid_lookup(uid);
struct unix_gid *ug;
struct group_info *gi;
int ret;
ug = unix_gid_lookup(uid);
if (!ug)
return -EAGAIN;
switch (cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle)) {
return ERR_PTR(-EAGAIN);
ret = cache_check(&unix_gid_cache, &ug->h, &rqstp->rq_chandle);
switch (ret) {
case -ENOENT:
*gip = NULL;
return 0;
return ERR_PTR(-ENOENT);
case 0:
*gip = ug->gi;
get_group_info(*gip);
gi = get_group_info(ug->gi);
cache_put(&ug->h, &unix_gid_cache);
return 0;
return gi;
default:
return -EAGAIN;
return ERR_PTR(-EAGAIN);
}
}
@ -681,6 +683,8 @@ svcauth_unix_set_client(struct svc_rqst *rqstp)
struct sockaddr_in *sin;
struct sockaddr_in6 *sin6, sin6_storage;
struct ip_map *ipm;
struct group_info *gi;
struct svc_cred *cred = &rqstp->rq_cred;
switch (rqstp->rq_addr.ss_family) {
case AF_INET:
@ -722,6 +726,17 @@ svcauth_unix_set_client(struct svc_rqst *rqstp)
ip_map_cached_put(rqstp, ipm);
break;
}
gi = unix_gid_find(cred->cr_uid, rqstp);
switch (PTR_ERR(gi)) {
case -EAGAIN:
return SVC_DROP;
case -ENOENT:
break;
default:
put_group_info(cred->cr_group_info);
cred->cr_group_info = gi;
}
return SVC_OK;
}
@ -818,19 +833,11 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
slen = svc_getnl(argv); /* gids length */
if (slen > 16 || (len -= (slen + 2)*4) < 0)
goto badcred;
if (unix_gid_find(cred->cr_uid, &cred->cr_group_info, rqstp)
== -EAGAIN)
cred->cr_group_info = groups_alloc(slen);
if (cred->cr_group_info == NULL)
return SVC_DROP;
if (cred->cr_group_info == NULL) {
cred->cr_group_info = groups_alloc(slen);
if (cred->cr_group_info == NULL)
return SVC_DROP;
for (i = 0; i < slen; i++)
GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
} else {
for (i = 0; i < slen ; i++)
svc_getnl(argv);
}
for (i = 0; i < slen; i++)
GROUP_AT(cred->cr_group_info, i) = svc_getnl(argv);
if (svc_getu32(argv) != htonl(RPC_AUTH_NULL) || svc_getu32(argv) != 0) {
*authp = rpc_autherr_badverf;
return SVC_DENIED;