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authorJ. Bruce Fields <bfields@redhat.com>2013-04-29 14:03:30 -0400
committerJ. Bruce Fields <bfields@redhat.com>2013-04-29 16:23:34 -0400
commitb1df7637232927ac69ed1a32e9c6b768f635b7d4 (patch)
treecf5fdd96cccb3a89f4e0dea895775eb7c428c533 /net/sunrpc
parentdd30333cf5a2f9dfecda5c6f4523133f13847aae (diff)
parent721ccfb79b6f74f4052de70236d24047e73682d4 (diff)
Merge branch 'nfs-for-next' of git://linux-nfs.org/~trondmy/nfs-2.6 into for-3.10
Note conflict: Chuck's patches modified (and made static) gss_mech_get_by_OID, which is still needed by gss-proxy patches. The conflict resolution is a bit minimal; we may want some more cleanup.
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/Kconfig1
-rw-r--r--net/sunrpc/auth.c75
-rw-r--r--net/sunrpc/auth_gss/auth_gss.c3
-rw-r--r--net/sunrpc/auth_gss/gss_krb5_mech.c6
-rw-r--r--net/sunrpc/auth_gss/gss_mech_switch.c119
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_upcall.c7
-rw-r--r--net/sunrpc/auth_gss/gss_rpc_upcall.h3
-rw-r--r--net/sunrpc/auth_gss/svcauth_gss.c4
-rw-r--r--net/sunrpc/clnt.c11
9 files changed, 185 insertions, 44 deletions
diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig
index 262caf03bd5f..241b54f30204 100644
--- a/net/sunrpc/Kconfig
+++ b/net/sunrpc/Kconfig
@@ -3,6 +3,7 @@ config SUNRPC
config SUNRPC_GSS
tristate
+ select OID_REGISTRY
config SUNRPC_BACKCHANNEL
bool
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index f5294047df77..ed2fdd210c0b 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -82,7 +82,7 @@ MODULE_PARM_DESC(auth_hashtable_size, "RPC credential cache hashtable size");
static u32
pseudoflavor_to_flavor(u32 flavor) {
- if (flavor >= RPC_AUTH_MAXFLAVOR)
+ if (flavor > RPC_AUTH_MAXFLAVOR)
return RPC_AUTH_GSS;
return flavor;
}
@@ -124,6 +124,79 @@ rpcauth_unregister(const struct rpc_authops *ops)
EXPORT_SYMBOL_GPL(rpcauth_unregister);
/**
+ * rpcauth_get_pseudoflavor - check if security flavor is supported
+ * @flavor: a security flavor
+ * @info: a GSS mech OID, quality of protection, and service value
+ *
+ * Verifies that an appropriate kernel module is available or already loaded.
+ * Returns an equivalent pseudoflavor, or RPC_AUTH_MAXFLAVOR if "flavor" is
+ * not supported locally.
+ */
+rpc_authflavor_t
+rpcauth_get_pseudoflavor(rpc_authflavor_t flavor, struct rpcsec_gss_info *info)
+{
+ const struct rpc_authops *ops;
+ rpc_authflavor_t pseudoflavor;
+
+ ops = auth_flavors[flavor];
+ if (ops == NULL)
+ request_module("rpc-auth-%u", flavor);
+ spin_lock(&rpc_authflavor_lock);
+ ops = auth_flavors[flavor];
+ if (ops == NULL || !try_module_get(ops->owner)) {
+ spin_unlock(&rpc_authflavor_lock);
+ return RPC_AUTH_MAXFLAVOR;
+ }
+ spin_unlock(&rpc_authflavor_lock);
+
+ pseudoflavor = flavor;
+ if (ops->info2flavor != NULL)
+ pseudoflavor = ops->info2flavor(info);
+
+ module_put(ops->owner);
+ return pseudoflavor;
+}
+EXPORT_SYMBOL_GPL(rpcauth_get_pseudoflavor);
+
+/**
+ * rpcauth_get_gssinfo - find GSS tuple matching a GSS pseudoflavor
+ * @pseudoflavor: GSS pseudoflavor to match
+ * @info: rpcsec_gss_info structure to fill in
+ *
+ * Returns zero and fills in "info" if pseudoflavor matches a
+ * supported mechanism.
+ */
+int
+rpcauth_get_gssinfo(rpc_authflavor_t pseudoflavor, struct rpcsec_gss_info *info)
+{
+ rpc_authflavor_t flavor = pseudoflavor_to_flavor(pseudoflavor);
+ const struct rpc_authops *ops;
+ int result;
+
+ if (flavor >= RPC_AUTH_MAXFLAVOR)
+ return -EINVAL;
+
+ ops = auth_flavors[flavor];
+ if (ops == NULL)
+ request_module("rpc-auth-%u", flavor);
+ spin_lock(&rpc_authflavor_lock);
+ ops = auth_flavors[flavor];
+ if (ops == NULL || !try_module_get(ops->owner)) {
+ spin_unlock(&rpc_authflavor_lock);
+ return -ENOENT;
+ }
+ spin_unlock(&rpc_authflavor_lock);
+
+ result = -ENOENT;
+ if (ops->flavor2info != NULL)
+ result = ops->flavor2info(pseudoflavor, info);
+
+ module_put(ops->owner);
+ return result;
+}
+EXPORT_SYMBOL_GPL(rpcauth_get_gssinfo);
+
+/**
* rpcauth_list_flavors - discover registered flavors and pseudoflavors
* @array: array to fill in
* @size: size of "array"
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c
index 23563e783ec2..a764e227fdde 100644
--- a/net/sunrpc/auth_gss/auth_gss.c
+++ b/net/sunrpc/auth_gss/auth_gss.c
@@ -1641,6 +1641,8 @@ static const struct rpc_authops authgss_ops = {
.pipes_create = gss_pipes_dentries_create,
.pipes_destroy = gss_pipes_dentries_destroy,
.list_pseudoflavors = gss_mech_list_pseudoflavors,
+ .info2flavor = gss_mech_info2flavor,
+ .flavor2info = gss_mech_flavor2info,
};
static const struct rpc_credops gss_credops = {
@@ -1733,6 +1735,7 @@ static void __exit exit_rpcsec_gss(void)
rcu_barrier(); /* Wait for completion of call_rcu()'s */
}
+MODULE_ALIAS("rpc-auth-6");
MODULE_LICENSE("GPL");
module_param_named(expired_cred_retry_delay,
gss_expired_cred_retry_delay,
diff --git a/net/sunrpc/auth_gss/gss_krb5_mech.c b/net/sunrpc/auth_gss/gss_krb5_mech.c
index 3bc4a23938ea..0d3c158ef8fa 100644
--- a/net/sunrpc/auth_gss/gss_krb5_mech.c
+++ b/net/sunrpc/auth_gss/gss_krb5_mech.c
@@ -732,16 +732,19 @@ static const struct gss_api_ops gss_kerberos_ops = {
static struct pf_desc gss_kerberos_pfs[] = {
[0] = {
.pseudoflavor = RPC_AUTH_GSS_KRB5,
+ .qop = GSS_C_QOP_DEFAULT,
.service = RPC_GSS_SVC_NONE,
.name = "krb5",
},
[1] = {
.pseudoflavor = RPC_AUTH_GSS_KRB5I,
+ .qop = GSS_C_QOP_DEFAULT,
.service = RPC_GSS_SVC_INTEGRITY,
.name = "krb5i",
},
[2] = {
.pseudoflavor = RPC_AUTH_GSS_KRB5P,
+ .qop = GSS_C_QOP_DEFAULT,
.service = RPC_GSS_SVC_PRIVACY,
.name = "krb5p",
},
@@ -753,11 +756,12 @@ MODULE_ALIAS("rpc-auth-gss-krb5p");
MODULE_ALIAS("rpc-auth-gss-390003");
MODULE_ALIAS("rpc-auth-gss-390004");
MODULE_ALIAS("rpc-auth-gss-390005");
+MODULE_ALIAS("rpc-auth-gss-1.2.840.113554.1.2.2");
static struct gss_api_mech gss_kerberos_mech = {
.gm_name = "krb5",
.gm_owner = THIS_MODULE,
- .gm_oid = {9, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02"},
+ .gm_oid = { 9, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" },
.gm_ops = &gss_kerberos_ops,
.gm_pf_num = ARRAY_SIZE(gss_kerberos_pfs),
.gm_pfs = gss_kerberos_pfs,
diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c
index 43fd5bbf92c6..defa9d33925c 100644
--- a/net/sunrpc/auth_gss/gss_mech_switch.c
+++ b/net/sunrpc/auth_gss/gss_mech_switch.c
@@ -36,6 +36,7 @@
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/oid_registry.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/gss_asn1.h>
#include <linux/sunrpc/auth_gss.h>
@@ -102,8 +103,13 @@ out:
return status;
}
-int
-gss_mech_register(struct gss_api_mech *gm)
+/**
+ * gss_mech_register - register a GSS mechanism
+ * @gm: GSS mechanism handle
+ *
+ * Returns zero if successful, or a negative errno.
+ */
+int gss_mech_register(struct gss_api_mech *gm)
{
int status;
@@ -116,11 +122,14 @@ gss_mech_register(struct gss_api_mech *gm)
dprintk("RPC: registered gss mechanism %s\n", gm->gm_name);
return 0;
}
-
EXPORT_SYMBOL_GPL(gss_mech_register);
-void
-gss_mech_unregister(struct gss_api_mech *gm)
+/**
+ * gss_mech_unregister - release a GSS mechanism
+ * @gm: GSS mechanism handle
+ *
+ */
+void gss_mech_unregister(struct gss_api_mech *gm)
{
spin_lock(&registered_mechs_lock);
list_del(&gm->gm_list);
@@ -128,18 +137,14 @@ gss_mech_unregister(struct gss_api_mech *gm)
dprintk("RPC: unregistered gss mechanism %s\n", gm->gm_name);
gss_mech_free(gm);
}
-
EXPORT_SYMBOL_GPL(gss_mech_unregister);
-struct gss_api_mech *
-gss_mech_get(struct gss_api_mech *gm)
+static struct gss_api_mech *gss_mech_get(struct gss_api_mech *gm)
{
__module_get(gm->gm_owner);
return gm;
}
-EXPORT_SYMBOL_GPL(gss_mech_get);
-
static struct gss_api_mech *
_gss_mech_get_by_name(const char *name)
{
@@ -169,12 +174,16 @@ struct gss_api_mech * gss_mech_get_by_name(const char *name)
}
return gm;
}
-EXPORT_SYMBOL_GPL(gss_mech_get_by_name);
-struct gss_api_mech *
-gss_mech_get_by_OID(struct xdr_netobj *obj)
+struct gss_api_mech *gss_mech_get_by_OID(struct rpcsec_gss_oid *obj)
{
struct gss_api_mech *pos, *gm = NULL;
+ char buf[32];
+
+ if (sprint_oid(obj->data, obj->len, buf, sizeof(buf)) < 0)
+ return NULL;
+ dprintk("RPC: %s(%s)\n", __func__, buf);
+ request_module("rpc-auth-gss-%s", buf);
spin_lock(&registered_mechs_lock);
list_for_each_entry(pos, &registered_mechs, gm_list) {
@@ -188,11 +197,8 @@ gss_mech_get_by_OID(struct xdr_netobj *obj)
}
spin_unlock(&registered_mechs_lock);
return gm;
-
}
-EXPORT_SYMBOL_GPL(gss_mech_get_by_OID);
-
static inline int
mech_supports_pseudoflavor(struct gss_api_mech *gm, u32 pseudoflavor)
{
@@ -237,8 +243,6 @@ gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
return gm;
}
-EXPORT_SYMBOL_GPL(gss_mech_get_by_pseudoflavor);
-
/**
* gss_mech_list_pseudoflavors - Discover registered GSS pseudoflavors
* @array: array to fill in
@@ -268,19 +272,82 @@ int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr, int size)
return i;
}
-u32
-gss_svc_to_pseudoflavor(struct gss_api_mech *gm, u32 service)
+/**
+ * gss_svc_to_pseudoflavor - map a GSS service number to a pseudoflavor
+ * @gm: GSS mechanism handle
+ * @qop: GSS quality-of-protection value
+ * @service: GSS service value
+ *
+ * Returns a matching security flavor, or RPC_AUTH_MAXFLAVOR if none is found.
+ */
+rpc_authflavor_t gss_svc_to_pseudoflavor(struct gss_api_mech *gm, u32 qop,
+ u32 service)
{
int i;
for (i = 0; i < gm->gm_pf_num; i++) {
- if (gm->gm_pfs[i].service == service) {
+ if (gm->gm_pfs[i].qop == qop &&
+ gm->gm_pfs[i].service == service) {
return gm->gm_pfs[i].pseudoflavor;
}
}
- return RPC_AUTH_MAXFLAVOR; /* illegal value */
+ return RPC_AUTH_MAXFLAVOR;
+}
+
+/**
+ * gss_mech_info2flavor - look up a pseudoflavor given a GSS tuple
+ * @info: a GSS mech OID, quality of protection, and service value
+ *
+ * Returns a matching pseudoflavor, or RPC_AUTH_MAXFLAVOR if the tuple is
+ * not supported.
+ */
+rpc_authflavor_t gss_mech_info2flavor(struct rpcsec_gss_info *info)
+{
+ rpc_authflavor_t pseudoflavor;
+ struct gss_api_mech *gm;
+
+ gm = gss_mech_get_by_OID(&info->oid);
+ if (gm == NULL)
+ return RPC_AUTH_MAXFLAVOR;
+
+ pseudoflavor = gss_svc_to_pseudoflavor(gm, info->qop, info->service);
+
+ gss_mech_put(gm);
+ return pseudoflavor;
+}
+
+/**
+ * gss_mech_flavor2info - look up a GSS tuple for a given pseudoflavor
+ * @pseudoflavor: GSS pseudoflavor to match
+ * @info: rpcsec_gss_info structure to fill in
+ *
+ * Returns zero and fills in "info" if pseudoflavor matches a
+ * supported mechanism. Otherwise a negative errno is returned.
+ */
+int gss_mech_flavor2info(rpc_authflavor_t pseudoflavor,
+ struct rpcsec_gss_info *info)
+{
+ struct gss_api_mech *gm;
+ int i;
+
+ gm = gss_mech_get_by_pseudoflavor(pseudoflavor);
+ if (gm == NULL)
+ return -ENOENT;
+
+ for (i = 0; i < gm->gm_pf_num; i++) {
+ if (gm->gm_pfs[i].pseudoflavor == pseudoflavor) {
+ memcpy(info->oid.data, gm->gm_oid.data, gm->gm_oid.len);
+ info->oid.len = gm->gm_oid.len;
+ info->qop = gm->gm_pfs[i].qop;
+ info->service = gm->gm_pfs[i].service;
+ gss_mech_put(gm);
+ return 0;
+ }
+ }
+
+ gss_mech_put(gm);
+ return -ENOENT;
}
-EXPORT_SYMBOL_GPL(gss_svc_to_pseudoflavor);
u32
gss_pseudoflavor_to_service(struct gss_api_mech *gm, u32 pseudoflavor)
@@ -294,8 +361,6 @@ gss_pseudoflavor_to_service(struct gss_api_mech *gm, u32 pseudoflavor)
return 0;
}
-EXPORT_SYMBOL_GPL(gss_pseudoflavor_to_service);
-
char *
gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service)
{
@@ -308,8 +373,6 @@ gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service)
return NULL;
}
-EXPORT_SYMBOL_GPL(gss_service_to_auth_domain_name);
-
void
gss_mech_put(struct gss_api_mech * gm)
{
@@ -317,8 +380,6 @@ gss_mech_put(struct gss_api_mech * gm)
module_put(gm->gm_owner);
}
-EXPORT_SYMBOL_GPL(gss_mech_put);
-
/* The mech could probably be determined from the token instead, but it's just
* as easy for now to pass it in. */
int
diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.c b/net/sunrpc/auth_gss/gss_rpc_upcall.c
index 3f874d704859..c63273604ddc 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.c
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.c
@@ -220,7 +220,6 @@ static int gssp_call(struct net *net, struct rpc_message *msg)
/* numbers somewhat arbitrary but large enough for current needs */
#define GSSX_MAX_OUT_HANDLE 128
-#define GSSX_MAX_MECH_OID 16
#define GSSX_MAX_SRC_PRINC 256
#define GSSX_KMEMBUF (GSSX_max_output_handle_sz + \
GSSX_max_oid_sz + \
@@ -242,7 +241,7 @@ int gssp_accept_sec_context_upcall(struct net *net,
* buffers but let the xdr code kmalloc them:
*/
.exported_context_token.len = GSSX_max_output_handle_sz,
- .mech.len = GSSX_max_oid_sz,
+ .mech.len = GSS_OID_MAX_LEN,
.src_name.display_name.len = GSSX_max_princ_sz
};
struct gssx_res_accept_sec_context res = {
@@ -272,7 +271,9 @@ int gssp_accept_sec_context_upcall(struct net *net,
data->minor_status = res.status.minor_status;
if (res.context_handle) {
data->out_handle = rctxh.exported_context_token;
- data->mech_oid = rctxh.mech;
+ data->mech_oid.len = rctxh.mech.len;
+ memcpy(data->mech_oid.data, rctxh.mech.data,
+ data->mech_oid.len);
client_name = rctxh.src_name.display_name;
}
diff --git a/net/sunrpc/auth_gss/gss_rpc_upcall.h b/net/sunrpc/auth_gss/gss_rpc_upcall.h
index 4c2caaa7e84e..1e542aded90a 100644
--- a/net/sunrpc/auth_gss/gss_rpc_upcall.h
+++ b/net/sunrpc/auth_gss/gss_rpc_upcall.h
@@ -21,6 +21,7 @@
#ifndef _GSS_RPC_UPCALL_H
#define _GSS_RPC_UPCALL_H
+#include <linux/sunrpc/gss_api.h>
#include <linux/sunrpc/auth_gss.h>
#include "gss_rpc_xdr.h"
#include "../netns.h"
@@ -30,7 +31,7 @@ struct gssp_upcall_data {
struct gssp_in_token in_token;
struct xdr_netobj out_handle;
struct xdr_netobj out_token;
- struct xdr_netobj mech_oid;
+ struct rpcsec_gss_oid mech_oid;
struct svc_cred creds;
int found_creds;
int major_status;
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
index 58f5bc329408..1c66a3b78329 100644
--- a/net/sunrpc/auth_gss/svcauth_gss.c
+++ b/net/sunrpc/auth_gss/svcauth_gss.c
@@ -1544,7 +1544,9 @@ svcauth_gss_accept(struct svc_rqst *rqstp, __be32 *authp)
svcdata->rsci = rsci;
cache_get(&rsci->h);
rqstp->rq_cred.cr_flavor = gss_svc_to_pseudoflavor(
- rsci->mechctx->mech_type, gc->gc_svc);
+ rsci->mechctx->mech_type,
+ GSS_C_QOP_DEFAULT,
+ gc->gc_svc);
ret = SVC_OK;
goto out;
}
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index ac74399e8899..3f7930f938cc 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -304,10 +304,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
err = rpciod_up();
if (err)
goto out_no_rpciod;
- err = -EINVAL;
- if (!xprt)
- goto out_no_xprt;
+ err = -EINVAL;
if (args->version >= program->nrvers)
goto out_err;
version = program->version[args->version];
@@ -382,10 +380,9 @@ out_no_principal:
out_no_stats:
kfree(clnt);
out_err:
- xprt_put(xprt);
-out_no_xprt:
rpciod_down();
out_no_rpciod:
+ xprt_put(xprt);
return ERR_PTR(err);
}
@@ -516,7 +513,7 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
new = rpc_new_client(args, xprt);
if (IS_ERR(new)) {
err = PTR_ERR(new);
- goto out_put;
+ goto out_err;
}
atomic_inc(&clnt->cl_count);
@@ -529,8 +526,6 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
new->cl_chatty = clnt->cl_chatty;
return new;
-out_put:
- xprt_put(xprt);
out_err:
dprintk("RPC: %s: returned error %d\n", __func__, err);
return ERR_PTR(err);