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nfsd4: move principal name into svc_cred

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Instead of keeping the principal name associated with a request in a
structure that's private to auth_gss and using an accessor function,
move it to svc_cred.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2012-05-14 19:55:22 -04:00
parent 631fc9ea05
commit 03a4e1f6dd
8 changed files with 38 additions and 41 deletions
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2
fs/nfs/callback.c
View File

@ -343,7 +343,7 @@ void nfs_callback_down(int minorversion)
int
check_gss_callback_principal(struct nfs_client *clp, struct svc_rqst *rqstp)
{
char *p = svc_gss_principal(rqstp);
char *p = rqstp->rq_cred.cr_principal;
if (rqstp->rq_authop->flavour != RPC_AUTH_GSS)
return 1;

5
fs/nfsd/nfs4callback.c
View File

@ -650,9 +650,10 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
struct rpc_clnt *client;
if (clp->cl_minorversion == 0) {
if (!clp->cl_principal && (clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
if (!clp->cl_cred.cr_principal &&
(clp->cl_flavor >= RPC_AUTH_GSS_KRB5))
return -EINVAL;
args.client_name = clp->cl_principal;
args.client_name = clp->cl_cred.cr_principal;
args.prognumber = conn->cb_prog,
args.protocol = XPRT_TRANSPORT_TCP;
args.authflavor = clp->cl_flavor;

34
fs/nfsd/nfs4state.c
View File

@ -1087,9 +1087,7 @@ free_client(struct nfs4_client *clp)
list_del(&ses->se_perclnt);
nfsd4_put_session_locked(ses);
}
if (clp->cl_cred.cr_group_info)
put_group_info(clp->cl_cred.cr_group_info);
kfree(clp->cl_principal);
free_svc_cred(&clp->cl_cred);
kfree(clp->cl_name.data);
kfree(clp);
}
@ -1170,12 +1168,20 @@ static void copy_clid(struct nfs4_client *target, struct nfs4_client *source)
target->cl_clientid.cl_id = source->cl_clientid.cl_id;
}
static void copy_cred(struct svc_cred *target, struct svc_cred *source)
static int copy_cred(struct svc_cred *target, struct svc_cred *source)
{
if (source->cr_principal) {
target->cr_principal =
kstrdup(source->cr_principal, GFP_KERNEL);
if (target->cr_principal == NULL)
return -ENOMEM;
} else
target->cr_principal = NULL;
target->cr_uid = source->cr_uid;
target->cr_gid = source->cr_gid;
target->cr_group_info = source->cr_group_info;
get_group_info(target->cr_group_info);
return 0;
}
static int same_name(const char *n1, const char *n2)
@ -1242,25 +1248,20 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
{
struct nfs4_client *clp;
struct sockaddr *sa = svc_addr(rqstp);
char *princ;
int ret;
clp = alloc_client(name);
if (clp == NULL)
return NULL;
INIT_LIST_HEAD(&clp->cl_sessions);
princ = svc_gss_principal(rqstp);
if (princ) {
clp->cl_principal = kstrdup(princ, GFP_KERNEL);
if (clp->cl_principal == NULL) {
spin_lock(&client_lock);
free_client(clp);
spin_unlock(&client_lock);
return NULL;
}
ret = copy_cred(&clp->cl_cred, &rqstp->rq_cred);
if (ret) {
spin_lock(&client_lock);
free_client(clp);
spin_unlock(&client_lock);
return NULL;
}
idr_init(&clp->cl_stateids);
memcpy(clp->cl_recdir, recdir, HEXDIR_LEN);
atomic_set(&clp->cl_refcount, 0);
@ -1279,7 +1280,6 @@ static struct nfs4_client *create_client(struct xdr_netobj name, char *recdir,
copy_verf(clp, verf);
rpc_copy_addr((struct sockaddr *) &clp->cl_addr, sa);
clp->cl_flavor = rqstp->rq_flavor;
copy_cred(&clp->cl_cred, &rqstp->rq_cred);
gen_confirm(clp);
clp->cl_cb_session = NULL;
return clp;

1
fs/nfsd/state.h
View File

@ -232,7 +232,6 @@ struct nfs4_client {
time_t cl_time; /* time of last lease renewal */
struct sockaddr_storage cl_addr; /* client ipaddress */
u32 cl_flavor; /* setclientid pseudoflavor */
char *cl_principal; /* setclientid principal name */
struct svc_cred cl_cred; /* setclientid principal */
clientid_t cl_clientid; /* generated by server */
nfs4_verifier cl_confirm; /* generated by server */

9
include/linux/sunrpc/svcauth.h
View File

@ -15,13 +15,22 @@
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/cache.h>
#include <linux/hash.h>
#include <linux/cred.h>
struct svc_cred {
uid_t cr_uid;
gid_t cr_gid;
struct group_info *cr_group_info;
char *cr_principal; /* for gss */
};
static inline void free_svc_cred(struct svc_cred *cred)
{
if (cred->cr_group_info)
put_group_info(cred->cr_group_info);
kfree(cred->cr_principal);
}
struct svc_rqst; /* forward decl */
struct in6_addr;

1
include/linux/sunrpc/svcauth_gss.h
View File

@ -22,7 +22,6 @@ int gss_svc_init_net(struct net *net);
void gss_svc_shutdown_net(struct net *net);
int svcauth_gss_register_pseudoflavor(u32 pseudoflavor, char * name);
u32 svcauth_gss_flavor(struct auth_domain *dom);
char *svc_gss_principal(struct svc_rqst *);
#endif /* __KERNEL__ */
#endif /* _LINUX_SUNRPC_SVCAUTH_GSS_H */

25
net/sunrpc/auth_gss/svcauth_gss.c
View File

@ -335,7 +335,6 @@ struct rsc {
struct svc_cred cred;
struct gss_svc_seq_data seqdata;
struct gss_ctx *mechctx;
char *client_name;
};
static struct rsc *rsc_update(struct cache_detail *cd, struct rsc *new, struct rsc *old);
@ -346,9 +345,7 @@ static void rsc_free(struct rsc *rsci)
kfree(rsci->handle.data);
if (rsci->mechctx)
gss_delete_sec_context(&rsci->mechctx);
if (rsci->cred.cr_group_info)
put_group_info(rsci->cred.cr_group_info);
kfree(rsci->client_name);
free_svc_cred(&rsci->cred);
}
static void rsc_put(struct kref *ref)
@ -386,7 +383,7 @@ rsc_init(struct cache_head *cnew, struct cache_head *ctmp)
tmp->handle.data = NULL;
new->mechctx = NULL;
new->cred.cr_group_info = NULL;
new->client_name = NULL;
new->cred.cr_principal = NULL;
}
static void
@ -401,8 +398,8 @@ update_rsc(struct cache_head *cnew, struct cache_head *ctmp)
spin_lock_init(&new->seqdata.sd_lock);
new->cred = tmp->cred;
tmp->cred.cr_group_info = NULL;
new->client_name = tmp->client_name;
tmp->client_name = NULL;
new->cred.cr_principal = tmp->cred.cr_principal;
tmp->cred.cr_principal = NULL;
}
static struct cache_head *
@ -496,8 +493,8 @@ static int rsc_parse(struct cache_detail *cd,
/* get client name */
len = qword_get(&mesg, buf, mlen);
if (len > 0) {
rsci.client_name = kstrdup(buf, GFP_KERNEL);
if (!rsci.client_name)
rsci.cred.cr_principal = kstrdup(buf, GFP_KERNEL);
if (!rsci.cred.cr_principal)
goto out;
}
@ -927,16 +924,6 @@ struct gss_svc_data {
struct rsc *rsci;
};
char *svc_gss_principal(struct svc_rqst *rqstp)
{
struct gss_svc_data *gd = (struct gss_svc_data *)rqstp->rq_auth_data;
if (gd && gd->rsci)
return gd->rsci->client_name;
return NULL;
}
EXPORT_SYMBOL_GPL(svc_gss_principal);
static int
svcauth_gss_set_client(struct svc_rqst *rqstp)
{

2
net/sunrpc/svcauth_unix.c
View File

@ -740,6 +740,7 @@ svcauth_null_accept(struct svc_rqst *rqstp, __be32 *authp)
struct svc_cred *cred = &rqstp->rq_cred;
cred->cr_group_info = NULL;
cred->cr_principal = NULL;
rqstp->rq_client = NULL;
if (argv->iov_len < 3*4)
@ -805,6 +806,7 @@ svcauth_unix_accept(struct svc_rqst *rqstp, __be32 *authp)
int len = argv->iov_len;
cred->cr_group_info = NULL;
cred->cr_principal = NULL;
rqstp->rq_client = NULL;
if ((len -= 3*4) < 0)