Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 301 insertions, 0 deletions

diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c
new file mode 100644
index 000000000000..9dfb68377d69
--- /dev/null
+++ b/net/sunrpc/auth_gss/gss_mech_switch.c
@@ -0,0 +1,301 @@
+/*
+ *  linux/net/sunrpc/gss_mech_switch.c
+ *
+ *  Copyright (c) 2001 The Regents of the University of Michigan.
+ *  All rights reserved.
+ *
+ *  J. Bruce Fields   <bfields@umich.edu>
+ *
+ *  Redistribution and use in source and binary forms, with or without 
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the 
+ *     documentation and/or other materials provided with the distribution.
+ *  3. Neither the name of the University nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#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>
+#include <linux/sunrpc/clnt.h>
+
+#ifdef RPC_DEBUG
+# define RPCDBG_FACILITY        RPCDBG_AUTH
+#endif
+
+static LIST_HEAD(registered_mechs);
+static DEFINE_SPINLOCK(registered_mechs_lock);
+
+static void
+gss_mech_free(struct gss_api_mech *gm)
+{
+        struct pf_desc *pf;
+        int i;
+
+        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;
+        }
+}
+
+static inline char *
+make_auth_domain_name(char *name)
+{
+        static char     *prefix = "gss/";
+        char            *new;
+
+        new = kmalloc(strlen(name) + strlen(prefix) + 1, GFP_KERNEL);
+        if (new) {
+                strcpy(new, prefix);
+                strcat(new, name);
+        }
+        return new;
+}
+
+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_register(struct gss_api_mech *gm)
+{
+        int status;
+
+        status = gss_mech_svc_setup(gm);
+        if (status)
+                return status;
+        spin_lock(&registered_mechs_lock);
+        list_add(&gm->gm_list, &registered_mechs);
+        spin_unlock(&registered_mechs_lock);
+        dprintk("RPC:      registered gss mechanism %s\n", gm->gm_name);
+        return 0;
+}
+
+EXPORT_SYMBOL(gss_mech_register);
+
+void
+gss_mech_unregister(struct gss_api_mech *gm)
+{
+        spin_lock(&registered_mechs_lock);
+        list_del(&gm->gm_list);
+        spin_unlock(&registered_mechs_lock);
+        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)
+{
+        __module_get(gm->gm_owner);
+        return gm;
+}
+
+EXPORT_SYMBOL(gss_mech_get);
+
+struct gss_api_mech *
+gss_mech_get_by_name(const char *name)
+{
+        struct gss_api_mech     *pos, *gm = NULL;
+
+        spin_lock(&registered_mechs_lock);
+        list_for_each_entry(pos, &registered_mechs, gm_list) {
+                if (0 == strcmp(name, pos->gm_name)) {
+                        if (try_module_get(pos->gm_owner))
+                                gm = pos;
+                        break;
+                }
+        }
+        spin_unlock(&registered_mechs_lock);
+        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_pseudoflavor(u32 pseudoflavor)
+{
+        struct gss_api_mech *pos, *gm = NULL;
+
+        spin_lock(&registered_mechs_lock);
+        list_for_each_entry(pos, &registered_mechs, gm_list) {
+                if (!mech_supports_pseudoflavor(pos, pseudoflavor)) {
+                        module_put(pos->gm_owner);
+                        continue;
+                }
+                if (try_module_get(pos->gm_owner))
+                        gm = pos;
+                break;
+        }
+        spin_unlock(&registered_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;
+}
+
+EXPORT_SYMBOL(gss_pseudoflavor_to_service);
+
+char *
+gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service)
+{
+        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. */
+int
+gss_import_sec_context(const void *input_token, size_t bufsize,
+                       struct gss_api_mech      *mech,
+                       struct gss_ctx           **ctx_id)
+{
+        if (!(*ctx_id = kmalloc(sizeof(**ctx_id), GFP_KERNEL)))
+                return GSS_S_FAILURE;
+        memset(*ctx_id, 0, sizeof(**ctx_id));
+        (*ctx_id)->mech_type = gss_mech_get(mech);
+
+        return mech->gm_ops
+                ->gss_import_sec_context(input_token, bufsize, *ctx_id);
+}
+
+/* gss_get_mic: compute a mic over message and return mic_token. */
+
+u32
+gss_get_mic(struct gss_ctx      *context_handle,
+            u32                 qop,
+            struct xdr_buf      *message,
+            struct xdr_netobj   *mic_token)
+{
+         return context_handle->mech_type->gm_ops
+                ->gss_get_mic(context_handle,
+                              qop,
+                              message,
+                              mic_token);
+}
+
+/* gss_verify_mic: check whether the provided mic_token verifies message. */
+
+u32
+gss_verify_mic(struct gss_ctx           *context_handle,
+               struct xdr_buf           *message,
+               struct xdr_netobj        *mic_token,
+               u32                      *qstate)
+{
+        return context_handle->mech_type->gm_ops
+                ->gss_verify_mic(context_handle,
+                                 message,
+                                 mic_token,
+                                 qstate);
+}
+
+/* gss_delete_sec_context: free all resources associated with context_handle.
+ * Note this differs from the RFC 2744-specified prototype in that we don't
+ * bother returning an output token, since it would never be used anyway. */
+
+u32
+gss_delete_sec_context(struct gss_ctx   **context_handle)
+{
+        dprintk("RPC:      gss_delete_sec_context deleting %p\n",
+                        *context_handle);
+
+        if (!*context_handle)
+                return(GSS_S_NO_CONTEXT);
+        if ((*context_handle)->internal_ctx_id != 0)
+                (*context_handle)->mech_type->gm_ops
+                        ->gss_delete_sec_context((*context_handle)
+                                                        ->internal_ctx_id);
+        if ((*context_handle)->mech_type)
+                gss_mech_put((*context_handle)->mech_type);
+        kfree(*context_handle);
+        *context_handle=NULL;
+        return GSS_S_COMPLETE;
+}