#include <linux/types.h>
#include <linux/slab.h>
#include <linux/socket.h>
+#include <linux/module.h>
#include <linux/sunrpc/msg_prot.h>
#include <linux/sunrpc/gss_asn1.h>
#include <linux/sunrpc/auth_gss.h>
+#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/gss_err.h>
#include <linux/sunrpc/sched.h>
#include <linux/sunrpc/gss_api.h>
static LIST_HEAD(registered_mechs);
static spinlock_t registered_mechs_lock = SPIN_LOCK_UNLOCKED;
-/* Reference counting: The reference count includes the reference in the
- * global registered_mechs list. That reference will never diseappear
- * (so the reference count will never go below 1) until after the mech
- * is removed from the list. Nothing can be removed from the list without
- * first getting the registered_mechs_lock, so a gss_api_mech won't diseappear
- * from underneath us while we hold the registered_mech_lock. */
-
-int
-gss_mech_register(struct xdr_netobj * mech_type, struct gss_api_ops * ops)
+static void
+gss_mech_free(struct gss_api_mech *gm)
{
- struct gss_api_mech *gm;
+ struct pf_desc *pf;
+ int i;
- if (!(gm = kmalloc(sizeof(*gm), GFP_KERNEL))) {
- printk("Failed to allocate memory in gss_mech_register");
- return -1;
+ for (i = 0; i < gm->gm_pf_num; i++) {
+ pf = &gm->gm_pfs[i];
+ if (pf->auth_domain_name)
+ kfree(pf->auth_domain_name);
+ pf->auth_domain_name = NULL;
}
- gm->gm_oid.len = mech_type->len;
- if (!(gm->gm_oid.data = kmalloc(mech_type->len, GFP_KERNEL))) {
- kfree(gm);
- printk("Failed to allocate memory in gss_mech_register");
- return -1;
- }
- memcpy(gm->gm_oid.data, mech_type->data, mech_type->len);
- /* We're counting the reference in the registered_mechs list: */
- atomic_set(&gm->gm_count, 1);
- gm->gm_ops = ops;
-
- spin_lock(®istered_mechs_lock);
- list_add(&gm->gm_list, ®istered_mechs);
- spin_unlock(®istered_mechs_lock);
- dprintk("RPC: gss_mech_register: registered mechanism with oid:\n");
- print_hexl((u32 *)mech_type->data, mech_type->len, 0);
- return 0;
}
-/* The following must be called with spinlock held: */
-int
-do_gss_mech_unregister(struct gss_api_mech *gm)
+static inline char *
+make_auth_domain_name(char *name)
{
+ static char *prefix = "gss/";
+ char *new;
- list_del(&gm->gm_list);
+ new = kmalloc(strlen(name) + strlen(prefix) + 1, GFP_KERNEL);
+ if (new) {
+ strcpy(new, prefix);
+ strcat(new, name);
+ }
+ return new;
+}
- dprintk("RPC: unregistered mechanism with oid:\n");
- print_hexl((u32 *)gm->gm_oid.data, gm->gm_oid.len, 0);
- if (!gss_mech_put(gm)) {
- dprintk("RPC: We just unregistered a gss_mechanism which"
- " someone is still using.\n");
- return -1;
- } else {
- return 0;
+static int
+gss_mech_svc_setup(struct gss_api_mech *gm)
+{
+ struct pf_desc *pf;
+ int i, status;
+
+ for (i = 0; i < gm->gm_pf_num; i++) {
+ pf = &gm->gm_pfs[i];
+ pf->auth_domain_name = make_auth_domain_name(pf->name);
+ status = -ENOMEM;
+ if (pf->auth_domain_name == NULL)
+ goto out;
+ status = svcauth_gss_register_pseudoflavor(pf->pseudoflavor,
+ pf->auth_domain_name);
+ if (status)
+ goto out;
}
+ return 0;
+out:
+ gss_mech_free(gm);
+ return status;
}
int
-gss_mech_unregister(struct gss_api_mech *gm)
+gss_mech_register(struct gss_api_mech *gm)
{
int status;
+ status = gss_mech_svc_setup(gm);
+ if (status)
+ return status;
spin_lock(®istered_mechs_lock);
- status = do_gss_mech_unregister(gm);
+ list_add(&gm->gm_list, ®istered_mechs);
spin_unlock(®istered_mechs_lock);
- return status;
+ dprintk("RPC: registered gss mechanism %s\n", gm->gm_name);
+ return 0;
}
-int
-gss_mech_unregister_all(void)
-{
- struct list_head *pos;
- struct gss_api_mech *gm;
- int status = 0;
+EXPORT_SYMBOL(gss_mech_register);
+void
+gss_mech_unregister(struct gss_api_mech *gm)
+{
spin_lock(®istered_mechs_lock);
- while (!list_empty(®istered_mechs)) {
- pos = registered_mechs.next;
- gm = list_entry(pos, struct gss_api_mech, gm_list);
- if (do_gss_mech_unregister(gm))
- status = -1;
- }
+ list_del(&gm->gm_list);
spin_unlock(®istered_mechs_lock);
- return status;
+ dprintk("RPC: unregistered gss mechanism %s\n", gm->gm_name);
+ gss_mech_free(gm);
}
+EXPORT_SYMBOL(gss_mech_unregister);
+
struct gss_api_mech *
gss_mech_get(struct gss_api_mech *gm)
{
- atomic_inc(&gm->gm_count);
+ __module_get(gm->gm_owner);
return gm;
}
+EXPORT_SYMBOL(gss_mech_get);
+
struct gss_api_mech *
-gss_mech_get_by_OID(struct xdr_netobj *mech_type)
+gss_mech_get_by_name(char *name)
{
- struct gss_api_mech *pos, *gm = NULL;
+ struct gss_api_mech *pos, *gm = NULL;
- dprintk("RPC: gss_mech_get_by_OID searching for mechanism with OID:\n");
- print_hexl((u32 *)mech_type->data, mech_type->len, 0);
spin_lock(®istered_mechs_lock);
list_for_each_entry(pos, ®istered_mechs, gm_list) {
- if ((pos->gm_oid.len == mech_type->len)
- && !memcmp(pos->gm_oid.data, mech_type->data,
- mech_type->len)) {
- gm = gss_mech_get(pos);
+ if (0 == strcmp(name, pos->gm_name)) {
+ if (!try_module_get(pos->gm_owner))
+ continue;
+ gm = pos;
break;
}
}
spin_unlock(®istered_mechs_lock);
- dprintk("RPC: gss_mech_get_by_OID %s it\n", gm ? "found" : "didn't find");
return gm;
+
+}
+
+EXPORT_SYMBOL(gss_mech_get_by_name);
+
+static inline int
+mech_supports_pseudoflavor(struct gss_api_mech *gm, u32 pseudoflavor)
+{
+ int i;
+
+ for (i = 0; i < gm->gm_pf_num; i++) {
+ if (gm->gm_pfs[i].pseudoflavor == pseudoflavor)
+ return 1;
+ }
+ return 0;
}
struct gss_api_mech *
-gss_mech_get_by_name(char *name)
+gss_mech_get_by_pseudoflavor(u32 pseudoflavor)
{
- struct gss_api_mech *pos, *gm = NULL;
+ struct gss_api_mech *pos, *gm = NULL;
spin_lock(®istered_mechs_lock);
list_for_each_entry(pos, ®istered_mechs, gm_list) {
- if (0 == strcmp(name, pos->gm_ops->name)) {
- gm = gss_mech_get(pos);
- break;
+ if (!try_module_get(pos->gm_owner))
+ continue;
+ if (!mech_supports_pseudoflavor(pos, pseudoflavor)) {
+ module_put(pos->gm_owner);
+ continue;
}
+ gm = pos;
+ break;
}
spin_unlock(®istered_mechs_lock);
return gm;
+}
+
+EXPORT_SYMBOL(gss_mech_get_by_pseudoflavor);
+u32
+gss_pseudoflavor_to_service(struct gss_api_mech *gm, u32 pseudoflavor)
+{
+ int i;
+
+ for (i = 0; i < gm->gm_pf_num; i++) {
+ if (gm->gm_pfs[i].pseudoflavor == pseudoflavor)
+ return gm->gm_pfs[i].service;
+ }
+ return 0;
}
-int
-gss_mech_put(struct gss_api_mech * gm)
+EXPORT_SYMBOL(gss_pseudoflavor_to_service);
+
+char *
+gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service)
{
- if (atomic_dec_and_test(&gm->gm_count)) {
- if (gm->gm_oid.len >0)
- kfree(gm->gm_oid.data);
- kfree(gm);
- return 1;
- } else {
- return 0;
+ int i;
+
+ for (i = 0; i < gm->gm_pf_num; i++) {
+ if (gm->gm_pfs[i].service == service)
+ return gm->gm_pfs[i].auth_domain_name;
}
+ return NULL;
}
+EXPORT_SYMBOL(gss_service_to_auth_domain_name);
+
+void
+gss_mech_put(struct gss_api_mech * gm)
+{
+ module_put(gm->gm_owner);
+}
+
+EXPORT_SYMBOL(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. */
u32
u32
gss_delete_sec_context(struct gss_ctx **context_handle)
{
- dprintk("gss_delete_sec_context deleting %p\n",*context_handle);
+ dprintk("RPC: gss_delete_sec_context deleting %p\n",
+ *context_handle);
if (!*context_handle)
return(GSS_S_NO_CONTEXT);
git://git.onelab.eu / linux-2.6.git / blobdiff