diff options
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/Kconfig | 1 | ||||
| -rw-r--r-- | net/sunrpc/auth.c | 75 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/auth_gss.c | 3 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_krb5_mech.c | 6 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/gss_mech_switch.c | 119 | ||||
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 4 |
6 files changed, 176 insertions, 32 deletions
diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig index 262caf03bd5..241b54f3020 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 f5294047df7..ed2fdd210c0 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 5257d2982ba..51415b07174 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 d3611f11a8d..33255ff889c 100644 --- a/net/sunrpc/auth_gss/gss_krb5_mech.c +++ b/net/sunrpc/auth_gss/gss_krb5_mech.c @@ -729,16 +729,19 @@ 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", }, @@ -750,11 +753,12 @@ 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 f0f4eee63a3..79881d6e68a 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(®istered_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) +static 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(®istered_mechs_lock); list_for_each_entry(pos, ®istered_mechs, gm_list) { @@ -188,11 +197,8 @@ gss_mech_get_by_OID(struct xdr_netobj *obj) } spin_unlock(®istered_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/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index f7d34e7b6f8..74f6d30f5de 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -1216,7 +1216,9 @@ 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; } |