11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2f30c2269544bffc7bf1b0d7c0abe5be1be83b8cbUwe Zeisberger * linux/net/sunrpc/auth_gss/auth_gss.c 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RPCSEC_GSS client authentication. 5cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 2000 The Regents of the University of Michigan. 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * All rights reserved. 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Dug Song <dugsong@monkey.org> 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Andy Adamson <andros@umich.edu> 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Redistribution and use in source and binary forms, with or without 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modification, are permitted provided that the following conditions 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * are met: 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. Redistributions of source code must retain the above copyright 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * notice, this list of conditions and the following disclaimer. 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. Redistributions in binary form must reproduce the above copyright 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * notice, this list of conditions and the following disclaimer in the 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * documentation and/or other materials provided with the distribution. 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3. Neither the name of the University nor the names of its 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * contributors may be used to endorse or promote products derived 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * from this software without specific prior written permission. 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 442d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields#include <linux/pagemap.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/clnt.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/auth.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/auth_gss.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/svcauth_gss.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/gss_err.h> 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/workqueue.h> 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/rpc_pipe_fs.h> 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sunrpc/gss_api.h> 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 54eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust#include <linux/hashtable.h> 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 56abfdbd53a4e28844ad953b313f017f55edbb85b7Trond Myklebust#include "../netns.h" 57abfdbd53a4e28844ad953b313f017f55edbb85b7Trond Myklebust 58f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_authops authgss_ops; 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 60f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_credops gss_credops; 610df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic const struct rpc_credops gss_nullops; 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 63126e216a8730532dfb685205309275f87e3d133eTrond Myklebust#define GSS_RETRY_EXPIRED 5 64126e216a8730532dfb685205309275f87e3d133eTrond Myklebuststatic unsigned int gss_expired_cred_retry_delay = GSS_RETRY_EXPIRED; 65126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 664de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson#define GSS_KEY_EXPIRE_TIMEO 240 674de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamsonstatic unsigned int gss_key_expire_timeo = GSS_KEY_EXPIRE_TIMEO; 684de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef RPC_DEBUG 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define RPCDBG_FACILITY RPCDBG_AUTH 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 73725f2865d4df31ac0768b13ae763beadc4bb8ce9Kevin Coffman#define GSS_CRED_SLACK (RPC_MAX_AUTH_SIZE * 2) 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* length of a krb5 verifier (48), plus data added before arguments when 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * using integrity (two 4-byte integers): */ 76adeb8133dd57f380e70a389a89a2ea3ae227f9e2Olga Kornievskaia#define GSS_VERF_SLACK 100 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7823c323af0375a7f63732bed0386aba5935b8de69Trond Myklebuststatic DEFINE_HASHTABLE(gss_auth_hash_table, 4); 79eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebuststatic DEFINE_SPINLOCK(gss_auth_hash_lock); 80eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 811917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebuststruct gss_pipe { 821917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct rpc_pipe_dir_object pdo; 831917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct rpc_pipe *pipe; 841917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct rpc_clnt *clnt; 851917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust const char *name; 86414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct kref kref; 871917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust}; 881917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct gss_auth { 900285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust struct kref kref; 91eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct hlist_node hash; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_auth rpc_auth; 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_api_mech *mech; 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum rpc_gss_svc service; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_clnt *client; 96e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust struct net *net; 9734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* 9834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * There are two upcall pipes; dentry[1], named "gssd", is used 9934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * for the new text-based upcall; dentry[0] is named after the 10034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * mechanism (for example, "krb5") and exists for 10134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * backwards-compatibility with older gssd's. 10234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ */ 1031917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct gss_pipe *gss_pipe[2]; 104bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust const char *target_name; 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\/* pipe_version >= 0 if and only if someone has a pipe open. */ 10879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static DEFINE_SPINLOCK(pipe_version_lock); 10979a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static struct rpc_wait_queue pipe_version_rpc_waitqueue; 11079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static DECLARE_WAIT_QUEUE_HEAD(pipe_version_waitqueue); 1119eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebuststatic void gss_put_auth(struct gss_auth *gss_auth); 112cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\ 1135d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebuststatic void gss_free_ctx(struct gss_cl_ctx *); 114b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v0; 115b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v1; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct gss_cl_ctx * 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_get_ctx(struct gss_cl_ctx *ctx) 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&ctx->count); 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx; 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_put_ctx(struct gss_cl_ctx *ctx) 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (atomic_dec_and_test(&ctx->count)) 1285d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust gss_free_ctx(ctx); 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1315d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust/* gss_cred_set_ctx: 1325d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust * called by gss_upcall_callback and gss_create_upcall in order 1335d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust * to set the gss context. The actual exchange of an old context 1349beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky * and a new one is protected by the pipe->lock. 1355d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust */ 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_cred_set_ctx(struct rpc_cred *cred, struct gss_cl_ctx *ctx) 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 1405d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 141cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (!test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags)) 142cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return; 1437b6962b0a6000df48c8a5fd967d262f77704101bTrond Myklebust gss_get_ctx(ctx); 144cf778b00e96df6d64f8e21b8395d1f8a859ecdc7Eric Dumazet rcu_assign_pointer(gss_cred->gc_ctx, ctx); 145fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust set_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 1464e857c58efeb99393cba5a5d0d8ec7117183137cPeter Zijlstra smp_mb__before_atomic(); 147fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_NEW, &cred->cr_flags); 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const void * 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssimple_get_bytes(const void *p, const void *end, void *res, size_t len) 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *q = (const void *)((const char *)p + len); 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(q > end || q < p)) 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(-EFAULT); 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(res, p, len); 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return q; 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline const void * 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssimple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest) 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *q; 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int len; 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &len, sizeof(len)); 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds q = (const void *)((const char *)p + len); 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(q > end || q < p)) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(-EFAULT); 1720f38b873aeaae698c3693748438547c8493165fbTrond Myklebust dest->data = kmemdup(p, len, GFP_NOFS); 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(dest->data == NULL)) 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(-ENOMEM); 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dest->len = len; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return q; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_cl_ctx * 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_cred_get_ctx(struct rpc_cred *cred) 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = NULL; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1855d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust rcu_read_lock(); 186c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton ctx = rcu_dereference(gss_cred->gc_ctx); 187c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton if (ctx) 188c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton gss_get_ctx(ctx); 1895d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust rcu_read_unlock(); 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_cl_ctx * 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_alloc_context(void) 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1980f38b873aeaae698c3693748438547c8493165fbTrond Myklebust ctx = kzalloc(sizeof(*ctx), GFP_NOFS); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx != NULL) { 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx->gc_proc = RPC_GSS_PROC_DATA; 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx->gc_seq = 1; /* NetApp 6.4R1 doesn't accept seq. no. 0 */ 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&ctx->gc_seq_lock); 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_set(&ctx->count,1); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx; 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GSSD_MIN_TIMEOUT (60 * 60) 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const void * 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_fill_context(const void *p, const void *end, struct gss_cl_ctx *ctx, struct gss_api_mech *gm) 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *q; 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int seclen; 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int timeout; 215620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson unsigned long now = jiffies; 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 window_size; 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 219620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson /* First unsigned int gives the remaining lifetime in seconds of the 220620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson * credential - e.g. the remaining TGT lifetime for Kerberos or 221620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson * the -t value passed to GSSD. 222620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson */ 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &timeout, sizeof(timeout)); 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout == 0) 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = GSSD_MIN_TIMEOUT; 228620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson ctx->gc_expiry = now + ((unsigned long)timeout * HZ); 229620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson /* Sequence number window. Determines the maximum number of 230620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson * simultaneous requests 231620038f6d2304475dce800dc5c75fc335a19613aAndy Adamson */ 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &window_size, sizeof(window_size)); 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx->gc_win = window_size; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gssd signals an error by passing ctx->gc_win = 0: */ 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx->gc_win == 0) { 238dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton /* 239dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton * in which case, p points to an error code. Anything other 240dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton * than -EKEYEXPIRED gets converted to -EACCES. 241dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton */ 242dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton p = simple_get_bytes(p, end, &ret, sizeof(ret)); 243dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton if (!IS_ERR(p)) 244dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton p = (ret == -EKEYEXPIRED) ? ERR_PTR(-EKEYEXPIRED) : 245dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton ERR_PTR(-EACCES); 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy the opaque wire context */ 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_netobj(p, end, &ctx->gc_wire_ctx); 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* import the opaque security context */ 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &seclen, sizeof(seclen)); 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds q = (const void *)((const char *)p + seclen); 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(q > end || q < p)) { 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = ERR_PTR(-EFAULT); 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 261400f26b542e86995662a0cc5483656b7b1f42af6Simo Sorce ret = gss_import_sec_context(p, seclen, gm, &ctx->gc_gss_ctx, NULL, GFP_NOFS); 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret < 0) { 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = ERR_PTR(ret); 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2662004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton 2672004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton /* is there any trailing data? */ 2682004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton if (q == end) { 2692004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton p = q; 2702004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton goto done; 2712004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton } 2722004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton 2732004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton /* pull in acceptor name (if there is one) */ 2742004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton p = simple_get_netobj(q, end, &ctx->gc_acceptor); 2752004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton if (IS_ERR(p)) 2762004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton goto err; 2772004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Laytondone: 2782004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton dprintk("RPC: %s Success. gc_expiry %lu now %lu timeout %u acceptor %.*s\n", 2792004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton __func__, ctx->gc_expiry, now, timeout, ctx->gc_acceptor.len, 2802004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton ctx->gc_acceptor.data); 2812004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton return p; 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr: 283173db3093474e7691f2c2f3136313565bd366f6cJeff Layton dprintk("RPC: %s returns error %ld\n", __func__, -PTR_ERR(p)); 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 28734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\#define UPCALL_BUF_LEN 128 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct gss_upcall_msg { 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t count; 2917eaf040b720bc8c0ce5cd49151ca194ca2d56842Eric W. Biederman kuid_t uid; 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_pipe_msg msg; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head list; 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth *auth; 2959beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky struct rpc_pipe *pipe; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_wait_queue rpc_waitqueue; 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t waitqueue; 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx; 29934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ char databuf[UPCALL_BUF_LEN]; 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3022aed8b476f3478be140df92bbfb182978e835504Trond Myklebuststatic int get_pipe_version(struct net *net) 30379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\{ 3042aed8b476f3478be140df92bbfb182978e835504Trond Myklebust struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); 30579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ int ret; 30679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ 30779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_lock(&pipe_version_lock); 3082aed8b476f3478be140df92bbfb182978e835504Trond Myklebust if (sn->pipe_version >= 0) { 3092aed8b476f3478be140df92bbfb182978e835504Trond Myklebust atomic_inc(&sn->pipe_users); 3102aed8b476f3478be140df92bbfb182978e835504Trond Myklebust ret = sn->pipe_version; 31179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } else 31279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ ret = -EAGAIN; 31379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_unlock(&pipe_version_lock); 31479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ return ret; 31579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\} 31679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ 3172aed8b476f3478be140df92bbfb182978e835504Trond Myklebuststatic void put_pipe_version(struct net *net) 31879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\{ 3192aed8b476f3478be140df92bbfb182978e835504Trond Myklebust struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); 3202aed8b476f3478be140df92bbfb182978e835504Trond Myklebust 3212aed8b476f3478be140df92bbfb182978e835504Trond Myklebust if (atomic_dec_and_lock(&sn->pipe_users, &pipe_version_lock)) { 3222aed8b476f3478be140df92bbfb182978e835504Trond Myklebust sn->pipe_version = -1; 32379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_unlock(&pipe_version_lock); 32479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 32579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\} 32679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_release_msg(struct gss_upcall_msg *gss_msg) 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 330e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust struct net *net = gss_msg->auth->net; 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!atomic_dec_and_test(&gss_msg->count)) 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 3332aed8b476f3478be140df92bbfb182978e835504Trond Myklebust put_pipe_version(net); 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG_ON(!list_empty(&gss_msg->list)); 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg->ctx != NULL) 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(gss_msg->ctx); 337f6a1cc89309f0ae847a9b6fe418d1c4215e5bc55Trond Myklebust rpc_destroy_wait_queue(&gss_msg->rpc_waitqueue); 3389eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust gss_put_auth(gss_msg->auth); 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(gss_msg); 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_upcall_msg * 3437eaf040b720bc8c0ce5cd49151ca194ca2d56842Eric W. Biederman__gss_find_upcall(struct rpc_pipe *pipe, kuid_t uid) 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *pos; 3469beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky list_for_each_entry(pos, &pipe->in_downcall, list) { 3470b4d51b02a2e941beec6f02a6c7a32c5a28c5b43Eric W. Biederman if (!uid_eq(pos->uid, uid)) 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&pos->count); 350632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s found msg %p\n", __func__, pos); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return pos; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 353632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s found nothing\n", __func__); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 357720b8f2d6f7de9e16f1217448cc7396e1604e175\\\"J. Bruce Fields\\\/* Try to add an upcall to the pipefs queue. 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If an upcall owned by our uid already exists, then we return a reference 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to that upcall instead of adding the new upcall. 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct gss_upcall_msg * 362053e324f67b9921fe7de0c4cbc720d29cb4bf207Suresh Jayaramangss_add_msg(struct gss_upcall_msg *gss_msg) 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3649beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky struct rpc_pipe *pipe = gss_msg->pipe; 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *old; 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3679beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 3689beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky old = __gss_find_upcall(pipe, gss_msg->uid); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old == NULL) { 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 3719beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky list_add(&gss_msg->list, &pipe->in_downcall); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg = old; 3749beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return gss_msg; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds__gss_unhash_msg(struct gss_upcall_msg *gss_msg) 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init(&gss_msg->list); 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpc_wake_up_status(&gss_msg->rpc_waitqueue, gss_msg->msg.errno); 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_all(&gss_msg->waitqueue); 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_dec(&gss_msg->count); 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_unhash_msg(struct gss_upcall_msg *gss_msg) 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3909beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky struct rpc_pipe *pipe = gss_msg->pipe; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3923b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust if (list_empty(&gss_msg->list)) 3933b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust return; 3949beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 3953b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust if (!list_empty(&gss_msg->list)) 3963b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust __gss_unhash_msg(gss_msg); 3979beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 401126e216a8730532dfb685205309275f87e3d133eTrond Myklebustgss_handle_downcall_result(struct gss_cred *gss_cred, struct gss_upcall_msg *gss_msg) 402126e216a8730532dfb685205309275f87e3d133eTrond Myklebust{ 403126e216a8730532dfb685205309275f87e3d133eTrond Myklebust switch (gss_msg->msg.errno) { 404126e216a8730532dfb685205309275f87e3d133eTrond Myklebust case 0: 405126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (gss_msg->ctx == NULL) 406126e216a8730532dfb685205309275f87e3d133eTrond Myklebust break; 407126e216a8730532dfb685205309275f87e3d133eTrond Myklebust clear_bit(RPCAUTH_CRED_NEGATIVE, &gss_cred->gc_base.cr_flags); 408126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred_set_ctx(&gss_cred->gc_base, gss_msg->ctx); 409126e216a8730532dfb685205309275f87e3d133eTrond Myklebust break; 410126e216a8730532dfb685205309275f87e3d133eTrond Myklebust case -EKEYEXPIRED: 411126e216a8730532dfb685205309275f87e3d133eTrond Myklebust set_bit(RPCAUTH_CRED_NEGATIVE, &gss_cred->gc_base.cr_flags); 412126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } 413126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred->gc_upcall_timestamp = jiffies; 414126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred->gc_upcall = NULL; 415126e216a8730532dfb685205309275f87e3d133eTrond Myklebust rpc_wake_up_status(&gss_msg->rpc_waitqueue, gss_msg->msg.errno); 416126e216a8730532dfb685205309275f87e3d133eTrond Myklebust} 417126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 418126e216a8730532dfb685205309275f87e3d133eTrond Myklebuststatic void 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_upcall_callback(struct rpc_task *task) 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 421a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct gss_cred *gss_cred = container_of(task->tk_rqstp->rq_cred, 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred, gc_base); 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg = gss_cred->gc_upcall; 4249beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky struct rpc_pipe *pipe = gss_msg->pipe; 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4269beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 427126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_handle_downcall_result(gss_cred, gss_msg); 4289beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 429126e216a8730532dfb685205309275f87e3d133eTrond Myklebust task->tk_status = gss_msg->msg.errno; 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static void gss_encode_v0_msg(struct gss_upcall_msg *gss_msg) 43434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 43590602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman uid_t uid = from_kuid(&init_user_ns, gss_msg->uid); 43690602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman memcpy(gss_msg->databuf, &uid, sizeof(uid)); 43790602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman gss_msg->msg.data = gss_msg->databuf; 43890602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman gss_msg->msg.len = sizeof(uid); 4399d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust 4409d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust BUILD_BUG_ON(sizeof(uid) > sizeof(gss_msg->databuf)); 44134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 44234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 4439d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebuststatic int gss_encode_v1_msg(struct gss_upcall_msg *gss_msg, 444bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust const char *service_name, 445bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust const char *target_name) 44634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 447683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust struct gss_api_mech *mech = gss_msg->auth->mech; 4488b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia char *p = gss_msg->databuf; 4499d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust size_t buflen = sizeof(gss_msg->databuf); 4509d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust int len; 4519d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust 4529d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust len = scnprintf(p, buflen, "mech=%s uid=%d ", mech->gm_name, 4539d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust from_kuid(&init_user_ns, gss_msg->uid)); 4549d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust buflen -= len; 4559d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust p += len; 4569d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust gss_msg->msg.len = len; 457bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust if (target_name) { 4589d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust len = scnprintf(p, buflen, "target=%s ", target_name); 4599d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust buflen -= len; 4608b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia p += len; 4618b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia gss_msg->msg.len += len; 4628b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia } 46368c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust if (service_name != NULL) { 4649d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust len = scnprintf(p, buflen, "service=%s ", service_name); 4659d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust buflen -= len; 4662efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia p += len; 4672efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia gss_msg->msg.len += len; 4682efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia } 469683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust if (mech->gm_upcall_enctypes) { 4709d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust len = scnprintf(p, buflen, "enctypes=%s ", 4719d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust mech->gm_upcall_enctypes); 4729d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust buflen -= len; 473683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust p += len; 474683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust gss_msg->msg.len += len; 475683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust } 4769d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust len = scnprintf(p, buflen, "\n"); 4779d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust if (len == 0) 4789d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust goto out_overflow; 4798b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia gss_msg->msg.len += len; 4808b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia 48134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_msg->msg.data = gss_msg->databuf; 4829d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust return 0; 4839d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebustout_overflow: 4849d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust WARN_ON_ONCE(1); 4859d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust return -ENOMEM; 48634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 48734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 48868c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebuststatic struct gss_upcall_msg * 489e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebustgss_alloc_msg(struct gss_auth *gss_auth, 4907eaf040b720bc8c0ce5cd49151ca194ca2d56842Eric W. Biederman kuid_t uid, const char *service_name) 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 49379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ int vers; 4949d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust int err = -ENOMEM; 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4960f38b873aeaae698c3693748438547c8493165fbTrond Myklebust gss_msg = kzalloc(sizeof(*gss_msg), GFP_NOFS); 497db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ if (gss_msg == NULL) 4989d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust goto err; 499e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust vers = get_pipe_version(gss_auth->net); 5009d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust err = vers; 5019d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust if (err < 0) 5029d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust goto err_free_msg; 5031917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_msg->pipe = gss_auth->gss_pipe[vers]->pipe; 504db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ INIT_LIST_HEAD(&gss_msg->list); 505db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ rpc_init_wait_queue(&gss_msg->rpc_waitqueue, "RPCSEC_GSS upcall waitq"); 506db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ init_waitqueue_head(&gss_msg->waitqueue); 507db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ atomic_set(&gss_msg->count, 1); 508db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ gss_msg->uid = uid; 509db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ gss_msg->auth = gss_auth; 510bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust switch (vers) { 511bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust case 0: 512bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust gss_encode_v0_msg(gss_msg); 5135fccc5b52ee07d07a74ce53c6f174bff81e26a16Trond Myklebust break; 514bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust default: 5159d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust err = gss_encode_v1_msg(gss_msg, service_name, gss_auth->target_name); 5169d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust if (err) 517e9776d0f4adee8877145672f6416b06b57f2dc27Trond Myklebust goto err_put_pipe_version; 518bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust }; 5199eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust kref_get(&gss_auth->kref); 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return gss_msg; 521e9776d0f4adee8877145672f6416b06b57f2dc27Trond Myklebusterr_put_pipe_version: 522e9776d0f4adee8877145672f6416b06b57f2dc27Trond Myklebust put_pipe_version(gss_auth->net); 5239d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebusterr_free_msg: 5249d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust kfree(gss_msg); 5259d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebusterr: 5269d3a2260f0f4bd6379b0a0f131c743fff25b0029Trond Myklebust return ERR_PTR(err); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_upcall_msg * 530e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebustgss_setup_upcall(struct gss_auth *gss_auth, struct rpc_cred *cred) 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5327c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust struct gss_cred *gss_cred = container_of(cred, 5337c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust struct gss_cred, gc_base); 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_new, *gss_msg; 5357eaf040b720bc8c0ce5cd49151ca194ca2d56842Eric W. Biederman kuid_t uid = cred->cr_uid; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 537e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust gss_new = gss_alloc_msg(gss_auth, uid, gss_cred->gc_principal); 538db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ if (IS_ERR(gss_new)) 539db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ return gss_new; 540053e324f67b9921fe7de0c4cbc720d29cb4bf207Suresh Jayaraman gss_msg = gss_add_msg(gss_new); 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg == gss_new) { 5429beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky int res = rpc_queue_upcall(gss_new->pipe, &gss_new->msg); 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_unhash_msg(gss_new); 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg = ERR_PTR(res); 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_new); 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return gss_msg; 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 552b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\static void warn_gssd(void) 553b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\{ 5540ea9de0ea6a4e4a1d343130b2a159b4f986e288eJeff Layton dprintk("AUTH_GSS upcall failed. Please check user daemon is running.\n"); 555b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\} 556b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_refresh_upcall(struct rpc_task *task) 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 560a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 5614a8c1344dccb848dbcf0edabc8b5c51a8ecf2808Trond Myklebust struct gss_auth *gss_auth = container_of(cred->cr_auth, 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth, rpc_auth); 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred, gc_base); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 5669beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky struct rpc_pipe *pipe; 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = 0; 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 569632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s for uid %u\n", 570cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman task->tk_pid, __func__, from_kuid(&init_user_ns, cred->cr_uid)); 571e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust gss_msg = gss_setup_upcall(gss_auth, cred); 572480e3243df156e39eea6c91057e2ae612a6bbe19Roel Kluin if (PTR_ERR(gss_msg) == -EAGAIN) { 57379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ /* XXX: warning on the first, under the assumption we 57479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ * shouldn't normally hit this case on a refresh. */ 57579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ warn_gssd(); 57679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ task->tk_timeout = 15*HZ; 57779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ rpc_sleep_on(&pipe_version_rpc_waitqueue, task, NULL); 578d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker return -EAGAIN; 57979a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(gss_msg)) { 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(gss_msg); 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5849beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky pipe = gss_msg->pipe; 5859beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_cred->gc_upcall != NULL) 5875d00837b90340af9106dcd93af75fd664c8eb87fTrond Myklebust rpc_sleep_on(&gss_cred->gc_upcall->rpc_waitqueue, task, NULL); 588126e216a8730532dfb685205309275f87e3d133eTrond Myklebust else if (gss_msg->ctx == NULL && gss_msg->msg.errno >= 0) { 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds task->tk_timeout = 0; 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_cred->gc_upcall = gss_msg; 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gss_upcall_callback will release the reference to gss_upcall_msg */ 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 5935d00837b90340af9106dcd93af75fd664c8eb87fTrond Myklebust rpc_sleep_on(&gss_msg->rpc_waitqueue, task, gss_upcall_callback); 594126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } else { 595126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_handle_downcall_result(gss_cred, gss_msg); 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = gss_msg->msg.errno; 597126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } 5989beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 601632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s for uid %u result %d\n", 602cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman task->tk_pid, __func__, 603cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman from_kuid(&init_user_ns, cred->cr_uid), err); 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred) 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 610e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust struct net *net = gss_auth->net; 611abfdbd53a4e28844ad953b313f017f55edbb85b7Trond Myklebust struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); 6129beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky struct rpc_pipe *pipe; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred *cred = &gss_cred->gc_base; 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEFINE_WAIT(wait); 616d36ccb9cec22a09a12d9ef8234d634f840d7ae4bTrond Myklebust int err; 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 618cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman dprintk("RPC: %s for uid %u\n", 619cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman __func__, from_kuid(&init_user_ns, cred->cr_uid)); 62079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\retry: 621d36ccb9cec22a09a12d9ef8234d634f840d7ae4bTrond Myklebust err = 0; 62289f842435c630f8426f414e6030bc2ffea0d6f81Jeff Layton /* if gssd is down, just skip upcalling altogether */ 62389f842435c630f8426f414e6030bc2ffea0d6f81Jeff Layton if (!gssd_running(net)) { 62489f842435c630f8426f414e6030bc2ffea0d6f81Jeff Layton warn_gssd(); 62589f842435c630f8426f414e6030bc2ffea0d6f81Jeff Layton return -EACCES; 62689f842435c630f8426f414e6030bc2ffea0d6f81Jeff Layton } 627e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust gss_msg = gss_setup_upcall(gss_auth, cred); 62879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ if (PTR_ERR(gss_msg) == -EAGAIN) { 62979a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ err = wait_event_interruptible_timeout(pipe_version_waitqueue, 63089f842435c630f8426f414e6030bc2ffea0d6f81Jeff Layton sn->pipe_version >= 0, 15 * HZ); 6312aed8b476f3478be140df92bbfb182978e835504Trond Myklebust if (sn->pipe_version < 0) { 632d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker warn_gssd(); 633d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker err = -EACCES; 634d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker } 635d36ccb9cec22a09a12d9ef8234d634f840d7ae4bTrond Myklebust if (err < 0) 63679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ goto out; 63779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ goto retry; 63879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(gss_msg)) { 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(gss_msg); 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6439beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky pipe = gss_msg->pipe; 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (;;) { 6455afa9133cfe67f1bfead6049a9640c9262a7101cTrond Myklebust prepare_to_wait(&gss_msg->waitqueue, &wait, TASK_KILLABLE); 6469beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg->ctx != NULL || gss_msg->msg.errno < 0) { 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6509beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 6515afa9133cfe67f1bfead6049a9640c9262a7101cTrond Myklebust if (fatal_signal_pending(current)) { 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -ERESTARTSYS; 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_intr; 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg->ctx) 6587b6962b0a6000df48c8a5fd967d262f77704101bTrond Myklebust gss_cred_set_ctx(cred, gss_msg->ctx); 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = gss_msg->msg.errno; 6619beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_intr: 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finish_wait(&gss_msg->waitqueue, &wait); 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 666632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s for uid %u result %d\n", 667cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman __func__, from_kuid(&init_user_ns, cred->cr_uid), err); 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MSG_BUF_MAXSIZE 1024 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *p, *end; 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *buf; 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 679496ad9aa8ef448058e36ca7a787c61f2e63f0f54Al Viro struct rpc_pipe *pipe = RPC_I(file_inode(filp))->pipe; 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx; 68190602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman uid_t id; 68290602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman kuid_t uid; 6833b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust ssize_t err = -EFBIG; 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mlen > MSG_BUF_MAXSIZE) 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -ENOMEM; 6880f38b873aeaae698c3693748438547c8493165fbTrond Myklebust buf = kmalloc(mlen, GFP_NOFS); 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf) 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EFAULT; 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(buf, src, mlen)) 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end = (const void *)((char *)buf + mlen); 69790602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman p = simple_get_bytes(buf, end, &id, sizeof(id)); 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) { 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(p); 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 70390602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman uid = make_kuid(&init_user_ns, id); 70490602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman if (!uid_valid(uid)) { 70590602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman err = -EINVAL; 70690602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman goto err; 70790602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman } 70890602c7b192fdd3e6b7c7623479f4bc86ed7ee34Eric W. Biederman 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -ENOMEM; 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx = gss_alloc_context(); 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx == NULL) 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 7133b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust 7143b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust err = -ENOENT; 7153b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust /* Find a matching upcall */ 7169beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 7179beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky gss_msg = __gss_find_upcall(pipe, uid); 7183b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust if (gss_msg == NULL) { 7199beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 7203b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust goto err_put_ctx; 7213b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust } 7223b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust list_del_init(&gss_msg->list); 7239beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 7243b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust 7256e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust p = gss_fill_context(p, end, ctx, gss_msg->auth->mech); 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) { 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(p); 728486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton switch (err) { 729486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -EACCES: 730dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton case -EKEYEXPIRED: 731486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton gss_msg->msg.errno = err; 732486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton err = mlen; 733486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton break; 734486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -EFAULT: 735486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -ENOMEM: 736486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -EINVAL: 737486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -ENOSYS: 738486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton gss_msg->msg.errno = -EAGAIN; 739486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton break; 740486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton default: 741486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton printk(KERN_CRIT "%s: bad return from " 7426c8530993e1fdf1d6af0403e796fe14d80b4b097Randy Dunlap "gss_fill_context: %zd\n", __func__, err); 743486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton BUG(); 744486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton } 7453b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust goto err_release_msg; 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7473b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust gss_msg->ctx = gss_get_ctx(ctx); 7483b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust err = mlen; 7493b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust 7503b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebusterr_release_msg: 7519beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 7523b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust __gss_unhash_msg(gss_msg); 7539beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 7543b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust gss_release_msg(gss_msg); 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr_put_ctx: 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr: 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(buf); 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 760632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s returning %Zd\n", __func__, err); 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 76434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static int gss_pipe_open(struct inode *inode, int new_version) 765cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\{ 7662aed8b476f3478be140df92bbfb182978e835504Trond Myklebust struct net *net = inode->i_sb->s_fs_info; 7672aed8b476f3478be140df92bbfb182978e835504Trond Myklebust struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); 76834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ int ret = 0; 76934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 77079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_lock(&pipe_version_lock); 7712aed8b476f3478be140df92bbfb182978e835504Trond Myklebust if (sn->pipe_version < 0) { 77234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* First open of any gss pipe determines the version: */ 7732aed8b476f3478be140df92bbfb182978e835504Trond Myklebust sn->pipe_version = new_version; 77479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ rpc_wake_up(&pipe_version_rpc_waitqueue); 77579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ wake_up(&pipe_version_waitqueue); 7762aed8b476f3478be140df92bbfb182978e835504Trond Myklebust } else if (sn->pipe_version != new_version) { 77734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* Trying to open a pipe of a different version */ 77834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ ret = -EBUSY; 77934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ goto out; 78079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 7812aed8b476f3478be140df92bbfb182978e835504Trond Myklebust atomic_inc(&sn->pipe_users); 78234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\out: 78379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_unlock(&pipe_version_lock); 78434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ return ret; 78534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 78634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 78734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 78834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static int gss_pipe_open_v0(struct inode *inode) 78934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 79034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ return gss_pipe_open(inode, 0); 79134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 79234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 79334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static int gss_pipe_open_v1(struct inode *inode) 79434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 79534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ return gss_pipe_open(inode, 1); 796cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\} 797cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\ 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_pipe_release(struct inode *inode) 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8012aed8b476f3478be140df92bbfb182978e835504Trond Myklebust struct net *net = inode->i_sb->s_fs_info; 8029beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky struct rpc_pipe *pipe = RPC_I(inode)->pipe; 8036e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust struct gss_upcall_msg *gss_msg; 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8055a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebustrestart: 8069beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_lock(&pipe->lock); 8079beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky list_for_each_entry(gss_msg, &pipe->in_downcall, list) { 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8095a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebust if (!list_empty(&gss_msg->msg.list)) 8105a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebust continue; 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg->msg.errno = -EPIPE; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __gss_unhash_msg(gss_msg); 8149beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 8165a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebust goto restart; 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8189beae4677de76cfa4ce8899dc8cd1a1cf8cd8332Stanislav Kinsbursky spin_unlock(&pipe->lock); 819cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\ 8202aed8b476f3478be140df92bbfb182978e835504Trond Myklebust put_pipe_version(net); 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_pipe_destroy_msg(struct rpc_pipe_msg *msg) 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg = container_of(msg, struct gss_upcall_msg, msg); 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (msg->errno < 0) { 829632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s releasing msg %p\n", 830632f0d0503accb8ab749a1165af99d344579c37bChuck Lever __func__, gss_msg); 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_unhash_msg(gss_msg); 833b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ if (msg->errno == -ETIMEDOUT) 834b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ warn_gssd(); 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8391917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebuststatic void gss_pipe_dentry_destroy(struct dentry *dir, 8401917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct rpc_pipe_dir_object *pdo) 841ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky{ 8421917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct gss_pipe *gss_pipe = pdo->pdo_data; 8431917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct rpc_pipe *pipe = gss_pipe->pipe; 844ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 8451917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (pipe->dentry != NULL) { 8461917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust rpc_unlink(pipe->dentry); 8471917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust pipe->dentry = NULL; 8486b2fddd3e7f7cd437fb234407d7504fd22caf064Trond Myklebust } 849ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky} 850ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 8511917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebuststatic int gss_pipe_dentry_create(struct dentry *dir, 8521917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct rpc_pipe_dir_object *pdo) 853ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky{ 8541917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct gss_pipe *p = pdo->pdo_data; 8556b2fddd3e7f7cd437fb234407d7504fd22caf064Trond Myklebust struct dentry *dentry; 856ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 8571917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust dentry = rpc_mkpipe_dentry(dir, p->name, p->clnt, p->pipe); 8581917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (IS_ERR(dentry)) 8591917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust return PTR_ERR(dentry); 8601917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust p->pipe->dentry = dentry; 8611917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust return 0; 8621917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust} 8631917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust 8641917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebuststatic const struct rpc_pipe_dir_object_ops gss_pipe_dir_object_ops = { 8651917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust .create = gss_pipe_dentry_create, 8661917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust .destroy = gss_pipe_dentry_destroy, 8671917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust}; 8681917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust 8691917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebuststatic struct gss_pipe *gss_pipe_alloc(struct rpc_clnt *clnt, 8701917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust const char *name, 8711917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust const struct rpc_pipe_ops *upcall_ops) 8721917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust{ 8731917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct gss_pipe *p; 8741917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust int err = -ENOMEM; 875ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 8761917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust p = kmalloc(sizeof(*p), GFP_KERNEL); 8771917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (p == NULL) 8786b2fddd3e7f7cd437fb234407d7504fd22caf064Trond Myklebust goto err; 8791917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust p->pipe = rpc_mkpipe_data(upcall_ops, RPC_PIPE_WAIT_FOR_OPEN); 8801917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (IS_ERR(p->pipe)) { 8811917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust err = PTR_ERR(p->pipe); 8821917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust goto err_free_gss_pipe; 8836b2fddd3e7f7cd437fb234407d7504fd22caf064Trond Myklebust } 8841917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust p->name = name; 8851917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust p->clnt = clnt; 886414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust kref_init(&p->kref); 8871917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust rpc_init_pipe_dir_object(&p->pdo, 8881917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust &gss_pipe_dir_object_ops, 8891917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust p); 890414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return p; 8911917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebusterr_free_gss_pipe: 8921917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust kfree(p); 8936b2fddd3e7f7cd437fb234407d7504fd22caf064Trond Myklebusterr: 8941917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust return ERR_PTR(err); 895ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky} 896ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 897414a629598409497c05f2387c22c77dee143b4ffTrond Myklebuststruct gss_alloc_pdo { 898414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct rpc_clnt *clnt; 899414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust const char *name; 900414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust const struct rpc_pipe_ops *upcall_ops; 901414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust}; 902414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 903414a629598409497c05f2387c22c77dee143b4ffTrond Myklebuststatic int gss_pipe_match_pdo(struct rpc_pipe_dir_object *pdo, void *data) 904414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust{ 905414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct gss_pipe *gss_pipe; 906414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct gss_alloc_pdo *args = data; 907414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 908414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust if (pdo->pdo_ops != &gss_pipe_dir_object_ops) 909414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return 0; 910414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust gss_pipe = container_of(pdo, struct gss_pipe, pdo); 911414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust if (strcmp(gss_pipe->name, args->name) != 0) 912414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return 0; 913414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust if (!kref_get_unless_zero(&gss_pipe->kref)) 914414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return 0; 915414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return 1; 916414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust} 917414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 918414a629598409497c05f2387c22c77dee143b4ffTrond Myklebuststatic struct rpc_pipe_dir_object *gss_pipe_alloc_pdo(void *data) 919414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust{ 920414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct gss_pipe *gss_pipe; 921414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct gss_alloc_pdo *args = data; 922414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 923414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust gss_pipe = gss_pipe_alloc(args->clnt, args->name, args->upcall_ops); 924414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust if (!IS_ERR(gss_pipe)) 925414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return &gss_pipe->pdo; 926414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return NULL; 927414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust} 928414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 929414a629598409497c05f2387c22c77dee143b4ffTrond Myklebuststatic struct gss_pipe *gss_pipe_get(struct rpc_clnt *clnt, 930414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust const char *name, 931414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust const struct rpc_pipe_ops *upcall_ops) 932414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust{ 933414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct net *net = rpc_net_ns(clnt); 934414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct rpc_pipe_dir_object *pdo; 935414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct gss_alloc_pdo args = { 936414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust .clnt = clnt, 937414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust .name = name, 938414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust .upcall_ops = upcall_ops, 939414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust }; 940414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 941414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust pdo = rpc_find_or_alloc_pipe_dir_object(net, 942414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust &clnt->cl_pipedir_objects, 943414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust gss_pipe_match_pdo, 944414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust gss_pipe_alloc_pdo, 945414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust &args); 946414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust if (pdo != NULL) 947414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return container_of(pdo, struct gss_pipe, pdo); 948414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust return ERR_PTR(-ENOMEM); 949414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust} 950414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 9511917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebuststatic void __gss_pipe_free(struct gss_pipe *p) 952ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky{ 9531917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct rpc_clnt *clnt = p->clnt; 9541917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct net *net = rpc_net_ns(clnt); 955ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 9561917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust rpc_remove_pipe_dir_object(net, 9571917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust &clnt->cl_pipedir_objects, 9581917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust &p->pdo); 9591917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust rpc_destroy_pipe_data(p->pipe); 9601917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust kfree(p); 961ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky} 962ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 963414a629598409497c05f2387c22c77dee143b4ffTrond Myklebuststatic void __gss_pipe_release(struct kref *kref) 964414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust{ 965414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust struct gss_pipe *p = container_of(kref, struct gss_pipe, kref); 966414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 967414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust __gss_pipe_free(p); 968414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust} 969414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust 9701917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebuststatic void gss_pipe_free(struct gss_pipe *p) 971ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky{ 9721917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (p != NULL) 973414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust kref_put(&p->kref, __gss_pipe_release); 974ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky} 975ccdc28f81c91f7ef2dc6c28d27f50264b19e4dd5Stanislav Kinsbursky 976cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki/* 977cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki * NOTE: we have the opportunity to use different 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * parameters based on the input flavor (which must be a pseudoflavor) 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 980eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebuststatic struct gss_auth * 981eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebustgss_create_new(struct rpc_auth_create_args *args, struct rpc_clnt *clnt) 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 983c2190661039b3817b4cc1cbfea620b3f7dbe5cd8Trond Myklebust rpc_authflavor_t flavor = args->pseudoflavor; 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth *gss_auth; 9851917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct gss_pipe *gss_pipe; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_auth * auth; 9876a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields int err = -ENOMEM; /* XXX? */ 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9898885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: creating GSS authenticator for client %p\n", clnt); 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!try_module_get(THIS_MODULE)) 9926a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields return ERR_PTR(err); 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(gss_auth = kmalloc(sizeof(*gss_auth), GFP_KERNEL))) 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_dec; 995eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust INIT_HLIST_NODE(&gss_auth->hash); 996bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust gss_auth->target_name = NULL; 997c2190661039b3817b4cc1cbfea620b3f7dbe5cd8Trond Myklebust if (args->target_name) { 998c2190661039b3817b4cc1cbfea620b3f7dbe5cd8Trond Myklebust gss_auth->target_name = kstrdup(args->target_name, GFP_KERNEL); 999bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust if (gss_auth->target_name == NULL) 1000bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust goto err_free; 1001bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust } 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_auth->client = clnt; 1003e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust gss_auth->net = get_net(rpc_net_ns(clnt)); 10046a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields err = -EINVAL; 10051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_auth->mech = gss_mech_get_by_pseudoflavor(flavor); 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!gss_auth->mech) { 10079b1d75b75505cff4468ceba0da51a1ba47e15ea2Trond Myklebust dprintk("RPC: Pseudoflavor %d not found!\n", flavor); 1008e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust goto err_put_net; 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_auth->service = gss_pseudoflavor_to_service(gss_auth->mech, flavor); 1011438b6fdebf2a2e8573e7290bc176feb4d4475f43J. Bruce Fields if (gss_auth->service == 0) 1012438b6fdebf2a2e8573e7290bc176feb4d4475f43J. Bruce Fields goto err_put_mech; 1013a699d65ec4ff82245d2c4fdfb8ed1d64776d756eTrond Myklebust if (!gssd_running(gss_auth->net)) 1014a699d65ec4ff82245d2c4fdfb8ed1d64776d756eTrond Myklebust goto err_put_mech; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth = &gss_auth->rpc_auth; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_cslack = GSS_CRED_SLACK >> 2; 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_rslack = GSS_VERF_SLACK >> 2; 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_ops = &authgss_ops; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_flavor = flavor; 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_set(&auth->au_count, 1); 10210285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kref_init(&gss_auth->kref); 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10231917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust err = rpcauth_init_credcache(auth); 10241917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (err) 10251917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust goto err_put_mech; 102634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* 102734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * Note: if we created the old pipe first, then someone who 102834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * examined the directory at the right moment might conclude 102934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * that we supported only the old pipe. So we instead create 103034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * the new pipe first. 103134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ */ 1032414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust gss_pipe = gss_pipe_get(clnt, "gssd", &gss_upcall_ops_v1); 10331917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (IS_ERR(gss_pipe)) { 10341917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust err = PTR_ERR(gss_pipe); 10351917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust goto err_destroy_credcache; 10366a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields } 10371917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_auth->gss_pipe[1] = gss_pipe; 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1039414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust gss_pipe = gss_pipe_get(clnt, gss_auth->mech->gm_name, 10401917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust &gss_upcall_ops_v0); 10411917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust if (IS_ERR(gss_pipe)) { 10421917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust err = PTR_ERR(gss_pipe); 1043c239d83b9921b8a8005a3bcd23000cfe18acf5c2Stanislav Kinsbursky goto err_destroy_pipe_1; 1044c239d83b9921b8a8005a3bcd23000cfe18acf5c2Stanislav Kinsbursky } 10451917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_auth->gss_pipe[0] = gss_pipe; 104607a2bf1da4765d987ffd1d8045e92ba032e0ad78Trond Myklebust 1047eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust return gss_auth; 1048c239d83b9921b8a8005a3bcd23000cfe18acf5c2Stanislav Kinsburskyerr_destroy_pipe_1: 1049414a629598409497c05f2387c22c77dee143b4ffTrond Myklebust gss_pipe_free(gss_auth->gss_pipe[1]); 10501917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebusterr_destroy_credcache: 10511917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust rpcauth_destroy_credcache(auth); 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr_put_mech: 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_mech_put(gss_auth->mech); 1054e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebusterr_put_net: 1055e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust put_net(gss_auth->net); 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr_free: 1057bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust kfree(gss_auth->target_name); 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(gss_auth); 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_dec: 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds module_put(THIS_MODULE); 10616a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields return ERR_PTR(err); 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 10650285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebustgss_free(struct gss_auth *gss_auth) 10660285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust{ 10671917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_pipe_free(gss_auth->gss_pipe[0]); 10681917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_pipe_free(gss_auth->gss_pipe[1]); 10690285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust gss_mech_put(gss_auth->mech); 1070e726340ac9cf6bb5b3f92a064664e10cd2b748deTrond Myklebust put_net(gss_auth->net); 1071bd4a3eb15bb42296e61d0fd16f2c7f8cc171b681Trond Myklebust kfree(gss_auth->target_name); 10720285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 10730285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kfree(gss_auth); 10740285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust module_put(THIS_MODULE); 10750285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust} 10760285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 10770285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebuststatic void 10780285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebustgss_free_callback(struct kref *kref) 10790285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust{ 10800285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust struct gss_auth *gss_auth = container_of(kref, struct gss_auth, kref); 10810285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 10820285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust gss_free(gss_auth); 10830285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust} 10840285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 10850285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebuststatic void 10869eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebustgss_put_auth(struct gss_auth *gss_auth) 10879eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust{ 10889eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust kref_put(&gss_auth->kref, gss_free_callback); 10899eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust} 10909eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust 10919eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebuststatic void 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_destroy(struct rpc_auth *auth) 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10941917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct gss_auth *gss_auth = container_of(auth, 10951917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust struct gss_auth, rpc_auth); 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10978885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: destroying GSS authenticator %p flavor %d\n", 10988885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever auth, auth->au_flavor); 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1100eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (hash_hashed(&gss_auth->hash)) { 1101eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust spin_lock(&gss_auth_hash_lock); 1102eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust hash_del(&gss_auth->hash); 1103eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust spin_unlock(&gss_auth_hash_lock); 1104eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust } 1105eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 11061917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_pipe_free(gss_auth->gss_pipe[0]); 11071917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_auth->gss_pipe[0] = NULL; 11081917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_pipe_free(gss_auth->gss_pipe[1]); 11091917228435eebdf4e3267fa95cace694b2fb4efdTrond Myklebust gss_auth->gss_pipe[1] = NULL; 11103ab9bb7243489f9db3abf3d05521ddfc6b184c0aTrond Myklebust rpcauth_destroy_credcache(auth); 11113ab9bb7243489f9db3abf3d05521ddfc6b184c0aTrond Myklebust 11129eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust gss_put_auth(gss_auth); 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1115a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields/* 1116a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields * Auths may be shared between rpc clients that were cloned from a 1117a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields * common client with the same xprt, if they also share the flavor and 1118a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields * target_name. 1119a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields * 1120a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields * The auth is looked up from the oldest parent sharing the same 1121a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields * cl_xprt, and the auth itself references only that common parent 1122a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields * (which is guaranteed to last as long as any of its descendants). 1123a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields */ 1124eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebuststatic struct gss_auth * 1125eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebustgss_auth_find_or_add_hashed(struct rpc_auth_create_args *args, 1126eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct rpc_clnt *clnt, 1127eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct gss_auth *new) 1128eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust{ 1129eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct gss_auth *gss_auth; 1130eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust unsigned long hashval = (unsigned long)clnt; 1131eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 1132eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust spin_lock(&gss_auth_hash_lock); 1133eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust hash_for_each_possible(gss_auth_hash_table, 1134eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust gss_auth, 1135eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust hash, 1136eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust hashval) { 1137a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields if (gss_auth->client != clnt) 1138a0f6ed8ebe4f6d494ef70f67d4c0c153cbf59577J. Bruce Fields continue; 1139eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (gss_auth->rpc_auth.au_flavor != args->pseudoflavor) 1140eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust continue; 1141eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (gss_auth->target_name != args->target_name) { 1142eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (gss_auth->target_name == NULL) 1143eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust continue; 1144eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (args->target_name == NULL) 1145eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust continue; 1146eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (strcmp(gss_auth->target_name, args->target_name)) 1147eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust continue; 1148eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust } 1149eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (!atomic_inc_not_zero(&gss_auth->rpc_auth.au_count)) 1150eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust continue; 1151eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust goto out; 1152eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust } 1153eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (new) 1154eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust hash_add(gss_auth_hash_table, &new->hash, hashval); 1155eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust gss_auth = new; 1156eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebustout: 1157eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust spin_unlock(&gss_auth_hash_lock); 1158eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust return gss_auth; 1159eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust} 1160eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 1161eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebuststatic struct gss_auth * 1162eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebustgss_create_hashed(struct rpc_auth_create_args *args, struct rpc_clnt *clnt) 1163eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust{ 1164eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct gss_auth *gss_auth; 1165eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct gss_auth *new; 1166eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 1167eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust gss_auth = gss_auth_find_or_add_hashed(args, clnt, NULL); 1168eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (gss_auth != NULL) 1169eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust goto out; 1170eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust new = gss_create_new(args, clnt); 1171eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (IS_ERR(new)) 1172eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust return new; 1173eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust gss_auth = gss_auth_find_or_add_hashed(args, clnt, new); 1174eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (gss_auth != new) 1175eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust gss_destroy(&new->rpc_auth); 1176eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebustout: 1177eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust return gss_auth; 1178eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust} 1179eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 1180eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebuststatic struct rpc_auth * 1181eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebustgss_create(struct rpc_auth_create_args *args, struct rpc_clnt *clnt) 1182eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust{ 1183eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct gss_auth *gss_auth; 1184eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct rpc_xprt *xprt = rcu_access_pointer(clnt->cl_xprt); 1185eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 1186eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust while (clnt != clnt->cl_parent) { 1187eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust struct rpc_clnt *parent = clnt->cl_parent; 1188eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust /* Find the original parent for this transport */ 1189eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (rcu_access_pointer(parent->cl_xprt) != xprt) 1190eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust break; 1191eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust clnt = parent; 1192eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust } 1193eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 1194eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust gss_auth = gss_create_hashed(args, clnt); 1195eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust if (IS_ERR(gss_auth)) 1196eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust return ERR_CAST(gss_auth); 1197eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust return &gss_auth->rpc_auth; 1198eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust} 1199eb6dc19d8e72ce3a957af5511d20c0db0a8bd007Trond Myklebust 12000df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust/* 12010df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * gss_destroying_context will cause the RPCSEC_GSS to send a NULL RPC call 12020df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * to the server with the GSS control procedure field set to 12030df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * RPC_GSS_PROC_DESTROY. This should normally cause the server to release 12040df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * all RPCSEC_GSS state associated with that context. 12050df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust */ 12060df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic int 12070df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebustgss_destroying_context(struct rpc_cred *cred) 12080df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust{ 12090df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 12100df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust struct gss_auth *gss_auth = container_of(cred->cr_auth, struct gss_auth, rpc_auth); 1211c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton struct gss_cl_ctx *ctx = rcu_dereference_protected(gss_cred->gc_ctx, 1); 12120df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust struct rpc_task *task; 12130df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 1214c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton if (test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) == 0) 12150df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust return 0; 12160df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 1217c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton ctx->gc_proc = RPC_GSS_PROC_DESTROY; 12180df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust cred->cr_ops = &gss_nullops; 12190df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 12200df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust /* Take a reference to ensure the cred will be destroyed either 12210df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * by the RPC call or by the put_rpccred() below */ 12220df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust get_rpccred(cred); 12230df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 1224080a1f148df0615f7a610e4776dd8f3fb706f54fTrond Myklebust task = rpc_call_null(gss_auth->client, cred, RPC_TASK_ASYNC|RPC_TASK_SOFT); 12250df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust if (!IS_ERR(task)) 12260df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust rpc_put_task(task); 12270df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 12280df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust put_rpccred(cred); 12290df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust return 1; 12300df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust} 12310df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 12320df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust/* gss_destroy_cred (and gss_free_ctx) are used to clean up after failure 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to create a new cred or context, so they check that things have been 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * allocated before freeing them. */ 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 12365d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebustgss_do_free_ctx(struct gss_cl_ctx *ctx) 12371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1238632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s\n", __func__); 12391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12400d8a374673c9bc62bc78a2d8fe64553a51542cb4Trond Myklebust gss_delete_sec_context(&ctx->gc_gss_ctx); 12411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(ctx->gc_wire_ctx.data); 12422004c726b9d9a9670b7f837190be9c8dfa7a0e9dJeff Layton kfree(ctx->gc_acceptor.data); 12431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(ctx); 12441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 12475d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebustgss_free_ctx_callback(struct rcu_head *head) 12485d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust{ 12495d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust struct gss_cl_ctx *ctx = container_of(head, struct gss_cl_ctx, gc_rcu); 12505d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust gss_do_free_ctx(ctx); 12515d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust} 12525d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 12535d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebuststatic void 12545d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebustgss_free_ctx(struct gss_cl_ctx *ctx) 12555d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust{ 12565d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust call_rcu(&ctx->gc_rcu, gss_free_ctx_callback); 12575d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust} 12585d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 12595d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebuststatic void 126031be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebustgss_free_cred(struct gss_cred *gss_cred) 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1262632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s cred=%p\n", __func__, gss_cred); 126331be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust kfree(gss_cred); 126431be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust} 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 126631be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebuststatic void 126731be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebustgss_free_cred_callback(struct rcu_head *head) 126831be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust{ 126931be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust struct gss_cred *gss_cred = container_of(head, struct gss_cred, gc_base.cr_rcu); 127031be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust gss_free_cred(gss_cred); 127131be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust} 12721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 127331be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebuststatic void 12746dcd3926b214a1fb081df18305921dedae269977Jeff Laytongss_destroy_nullcred(struct rpc_cred *cred) 127531be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust{ 12765d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 12770285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust struct gss_auth *gss_auth = container_of(cred->cr_auth, struct gss_auth, rpc_auth); 1278c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton struct gss_cl_ctx *ctx = rcu_dereference_protected(gss_cred->gc_ctx, 1); 12795d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 1280a9b3cd7f323b2e57593e7215362a7b02fc933e3aStephen Hemminger RCU_INIT_POINTER(gss_cred->gc_ctx, NULL); 128131be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust call_rcu(&cred->cr_rcu, gss_free_cred_callback); 12825d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust if (ctx) 12835d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust gss_put_ctx(ctx); 12849eb2ddb48ce3a7bd745c14a933112994647fa3cdTrond Myklebust gss_put_auth(gss_auth); 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12876dcd3926b214a1fb081df18305921dedae269977Jeff Laytonstatic void 12886dcd3926b214a1fb081df18305921dedae269977Jeff Laytongss_destroy_cred(struct rpc_cred *cred) 12896dcd3926b214a1fb081df18305921dedae269977Jeff Layton{ 12906dcd3926b214a1fb081df18305921dedae269977Jeff Layton 12916dcd3926b214a1fb081df18305921dedae269977Jeff Layton if (gss_destroying_context(cred)) 12926dcd3926b214a1fb081df18305921dedae269977Jeff Layton return; 12936dcd3926b214a1fb081df18305921dedae269977Jeff Layton gss_destroy_nullcred(cred); 12946dcd3926b214a1fb081df18305921dedae269977Jeff Layton} 12956dcd3926b214a1fb081df18305921dedae269977Jeff Layton 12961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 12971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Lookup RPCSEC_GSS cred for the current process 12981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 12991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct rpc_cred * 13008a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustgss_lookup_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags) 13011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13028a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebust return rpcauth_lookup_credcache(auth, acred, flags); 13031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct rpc_cred * 13068a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustgss_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags) 13071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 13081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth *gss_auth = container_of(auth, struct gss_auth, rpc_auth); 13091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *cred = NULL; 13101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = -ENOMEM; 13111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1312632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s for uid %d, flavor %d\n", 1313cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman __func__, from_kuid(&init_user_ns, acred->uid), 1314cdba321e291f0fbf5abda4d88340292b858e3d4dEric W. Biederman auth->au_flavor); 13151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13160f38b873aeaae698c3693748438547c8493165fbTrond Myklebust if (!(cred = kzalloc(sizeof(*cred), GFP_NOFS))) 13171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_err; 13181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13195fe4755e2526a2aa82b7ed8daeb3aed74a236925Trond Myklebust rpcauth_init_cred(&cred->gc_base, acred, auth, &gss_credops); 13201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 13211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: in order to force a call to call_refresh(), we deliberately 13221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fail to flag the credential as RPCAUTH_CRED_UPTODATE. 13231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1324fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust cred->gc_base.cr_flags = 1UL << RPCAUTH_CRED_NEW; 13251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cred->gc_service = gss_auth->service; 132668c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust cred->gc_principal = NULL; 132768c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust if (acred->machine_cred) 132868c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust cred->gc_principal = acred->principal; 13290285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kref_get(&gss_auth->kref); 13301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &cred->gc_base; 13311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_err: 1333632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %s failed with error %d\n", __func__, err); 13341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(err); 13351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 13361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 13371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 1338fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebustgss_cred_init(struct rpc_auth *auth, struct rpc_cred *cred) 1339fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust{ 1340fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust struct gss_auth *gss_auth = container_of(auth, struct gss_auth, rpc_auth); 1341fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust struct gss_cred *gss_cred = container_of(cred,struct gss_cred, gc_base); 1342fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust int err; 1343fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust 1344fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust do { 1345fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust err = gss_create_upcall(gss_auth, gss_cred); 1346fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust } while (err == -EAGAIN); 1347fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust return err; 1348fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust} 1349fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust 1350a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Laytonstatic char * 1351a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Laytongss_stringify_acceptor(struct rpc_cred *cred) 1352a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton{ 1353c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton char *string = NULL; 1354a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 1355c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton struct gss_cl_ctx *ctx; 1356b3ecba096729f521312d1863ad22530695527aedJeff Layton unsigned int len; 1357c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton struct xdr_netobj *acceptor; 1358c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton 1359c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton rcu_read_lock(); 1360c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton ctx = rcu_dereference(gss_cred->gc_ctx); 1361c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton if (!ctx) 1362c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton goto out; 1363c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton 1364b3ecba096729f521312d1863ad22530695527aedJeff Layton len = ctx->gc_acceptor.len; 1365b3ecba096729f521312d1863ad22530695527aedJeff Layton rcu_read_unlock(); 1366a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton 1367a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton /* no point if there's no string */ 1368b3ecba096729f521312d1863ad22530695527aedJeff Layton if (!len) 1369b3ecba096729f521312d1863ad22530695527aedJeff Layton return NULL; 1370b3ecba096729f521312d1863ad22530695527aedJeff Laytonrealloc: 1371b3ecba096729f521312d1863ad22530695527aedJeff Layton string = kmalloc(len + 1, GFP_KERNEL); 1372a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton if (!string) 1373b3ecba096729f521312d1863ad22530695527aedJeff Layton return NULL; 1374b3ecba096729f521312d1863ad22530695527aedJeff Layton 1375b3ecba096729f521312d1863ad22530695527aedJeff Layton rcu_read_lock(); 1376b3ecba096729f521312d1863ad22530695527aedJeff Layton ctx = rcu_dereference(gss_cred->gc_ctx); 1377b3ecba096729f521312d1863ad22530695527aedJeff Layton 1378b3ecba096729f521312d1863ad22530695527aedJeff Layton /* did the ctx disappear or was it replaced by one with no acceptor? */ 1379b3ecba096729f521312d1863ad22530695527aedJeff Layton if (!ctx || !ctx->gc_acceptor.len) { 1380b3ecba096729f521312d1863ad22530695527aedJeff Layton kfree(string); 1381b3ecba096729f521312d1863ad22530695527aedJeff Layton string = NULL; 1382c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton goto out; 1383b3ecba096729f521312d1863ad22530695527aedJeff Layton } 1384b3ecba096729f521312d1863ad22530695527aedJeff Layton 1385b3ecba096729f521312d1863ad22530695527aedJeff Layton acceptor = &ctx->gc_acceptor; 1386b3ecba096729f521312d1863ad22530695527aedJeff Layton 1387b3ecba096729f521312d1863ad22530695527aedJeff Layton /* 1388b3ecba096729f521312d1863ad22530695527aedJeff Layton * Did we find a new acceptor that's longer than the original? Allocate 1389b3ecba096729f521312d1863ad22530695527aedJeff Layton * a longer buffer and try again. 1390b3ecba096729f521312d1863ad22530695527aedJeff Layton */ 1391b3ecba096729f521312d1863ad22530695527aedJeff Layton if (len < acceptor->len) { 1392b3ecba096729f521312d1863ad22530695527aedJeff Layton len = acceptor->len; 1393b3ecba096729f521312d1863ad22530695527aedJeff Layton rcu_read_unlock(); 1394b3ecba096729f521312d1863ad22530695527aedJeff Layton kfree(string); 1395b3ecba096729f521312d1863ad22530695527aedJeff Layton goto realloc; 1396b3ecba096729f521312d1863ad22530695527aedJeff Layton } 1397a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton 1398a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton memcpy(string, acceptor->data, acceptor->len); 1399a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton string[acceptor->len] = '\0'; 1400c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Laytonout: 1401c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton rcu_read_unlock(); 1402a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton return string; 1403a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton} 1404a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton 14054de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson/* 14064de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson * Returns -EACCES if GSS context is NULL or will expire within the 14074de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson * timeout (miliseconds) 14084de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson */ 14094de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamsonstatic int 14104de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamsongss_key_timeout(struct rpc_cred *rc) 14114de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson{ 14124de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson struct gss_cred *gss_cred = container_of(rc, struct gss_cred, gc_base); 1413c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton struct gss_cl_ctx *ctx; 14144de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson unsigned long now = jiffies; 14154de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson unsigned long expire; 14164de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson 1417c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton rcu_read_lock(); 1418c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton ctx = rcu_dereference(gss_cred->gc_ctx); 1419c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton if (ctx) 1420c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton expire = ctx->gc_expiry - (gss_key_expire_timeo * HZ); 1421c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton rcu_read_unlock(); 1422c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton if (!ctx || time_after(now, expire)) 14234de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson return -EACCES; 14244de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson return 0; 14254de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson} 14264de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson 1427fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebuststatic int 14288a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustgss_match(struct auth_cred *acred, struct rpc_cred *rc, int flags) 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(rc, struct gss_cred, gc_base); 1431c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton struct gss_cl_ctx *ctx; 14324de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson int ret; 14331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1434cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (test_bit(RPCAUTH_CRED_NEW, &rc->cr_flags)) 14358a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebust goto out; 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Don't match with creds that have expired. */ 1437c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton rcu_read_lock(); 1438c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton ctx = rcu_dereference(gss_cred->gc_ctx); 1439c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton if (!ctx || time_after(jiffies, ctx->gc_expiry)) { 1440c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton rcu_read_unlock(); 1441cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return 0; 1442c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton } 1443c5e6aecd034e70e73af4d7a2b8a115239e3568b5Jeff Layton rcu_read_unlock(); 1444cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (!test_bit(RPCAUTH_CRED_UPTODATE, &rc->cr_flags)) 14451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 14468a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustout: 144768c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust if (acred->principal != NULL) { 144868c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust if (gss_cred->gc_principal == NULL) 144968c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust return 0; 14504de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson ret = strcmp(acred->principal, gss_cred->gc_principal) == 0; 14514de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson goto check_expire; 145268c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust } 145368c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust if (gss_cred->gc_principal != NULL) 14547c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust return 0; 14554de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson ret = uid_eq(rc->cr_uid, acred->uid); 14564de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson 14574de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamsoncheck_expire: 14584de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson if (ret == 0) 14594de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson return ret; 14604de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson 14614de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson /* Notify acred users of GSS context expiration timeout */ 14624de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson if (test_bit(RPC_CRED_NOTIFY_TIMEOUT, &acred->ac_flags) && 14634de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson (gss_key_timeout(rc) != 0)) { 14644de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson /* test will now be done from generic cred */ 14654de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson test_and_clear_bit(RPC_CRED_NOTIFY_TIMEOUT, &acred->ac_flags); 14664de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson /* tell NFS layer that key will expire soon */ 14674de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson set_bit(RPC_CRED_KEY_EXPIRE_SOON, &acred->ac_flags); 14684de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson } 14694de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson return ret; 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Marshal credentials. 14741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Maybe we should keep a cached credential for performance reasons. 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 1476d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyanstatic __be32 * 1477d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyangss_marshal(struct rpc_task *task, __be32 *p) 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1479a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_rqst *req = task->tk_rqstp; 1480a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = req->rq_cred; 14811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 14821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gc_base); 14831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 1484d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *cred_len; 14851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat = 0; 14861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 14871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct kvec iov; 14881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf verf_buf; 14891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1490632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s\n", task->tk_pid, __func__); 14911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl(RPC_AUTH_GSS); 14931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cred_len = p++; 14941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock(&ctx->gc_seq_lock); 14961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->rq_seqno = ctx->gc_seq++; 14971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock(&ctx->gc_seq_lock); 14981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) RPC_GSS_VERSION); 15001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) ctx->gc_proc); 15011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) req->rq_seqno); 15021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) gss_cred->gc_service); 15031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = xdr_encode_netobj(p, &ctx->gc_wire_ctx); 15041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *cred_len = htonl((p - (cred_len + 1)) << 2); 15051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We compute the checksum for the verifier over the xdr-encoded bytes 15071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * starting with the xid and ending at the end of the credential: */ 1508a4f0835c604f80f945ab3e72ffd00547145c4b2bTrond Myklebust iov.iov_base = xprt_skip_transport_header(req->rq_xprt, 1509808012fbb23a52ec59352445d2076d175ad4ab26Chuck Lever req->rq_snd_buf.head[0].iov_base); 15101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov.iov_len = (u8 *)p - (u8 *)iov.iov_base; 15111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xdr_buf_from_iov(&iov, &verf_buf); 15121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set verifier flavor*/ 15141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl(RPC_AUTH_GSS); 15151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.data = (u8 *)(p + 1); 151700fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_get_mic(ctx->gc_gss_ctx, &verf_buf, &mic); 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) { 1519fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 15201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (maj_stat != 0) { 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("gss_marshal: gss_get_mic FAILED (%d)\n", maj_stat); 15221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_put_ctx; 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = xdr_encode_opaque(p, NULL, mic.len); 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 15261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 15271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_put_ctx: 15281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1532cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebuststatic int gss_renew_cred(struct rpc_task *task) 1533cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust{ 1534a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *oldcred = task->tk_rqstp->rq_cred; 1535cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct gss_cred *gss_cred = container_of(oldcred, 1536cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct gss_cred, 1537cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust gc_base); 1538cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct rpc_auth *auth = oldcred->cr_auth; 1539cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct auth_cred acred = { 1540cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust .uid = oldcred->cr_uid, 154168c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust .principal = gss_cred->gc_principal, 154268c97153fb7f2877f98aa6c29546381d9cad2fedTrond Myklebust .machine_cred = (gss_cred->gc_principal != NULL ? 1 : 0), 1543cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust }; 1544cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct rpc_cred *new; 1545cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust 1546cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust new = gss_lookup_cred(auth, &acred, RPCAUTH_LOOKUP_NEW); 1547cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (IS_ERR(new)) 1548cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return PTR_ERR(new); 1549a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust task->tk_rqstp->rq_cred = new; 1550cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust put_rpccred(oldcred); 1551cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return 0; 1552cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust} 1553cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust 1554126e216a8730532dfb685205309275f87e3d133eTrond Myklebuststatic int gss_cred_is_negative_entry(struct rpc_cred *cred) 1555126e216a8730532dfb685205309275f87e3d133eTrond Myklebust{ 1556126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (test_bit(RPCAUTH_CRED_NEGATIVE, &cred->cr_flags)) { 1557126e216a8730532dfb685205309275f87e3d133eTrond Myklebust unsigned long now = jiffies; 1558126e216a8730532dfb685205309275f87e3d133eTrond Myklebust unsigned long begin, expire; 1559126e216a8730532dfb685205309275f87e3d133eTrond Myklebust struct gss_cred *gss_cred; 1560126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 1561126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred = container_of(cred, struct gss_cred, gc_base); 1562126e216a8730532dfb685205309275f87e3d133eTrond Myklebust begin = gss_cred->gc_upcall_timestamp; 1563126e216a8730532dfb685205309275f87e3d133eTrond Myklebust expire = begin + gss_expired_cred_retry_delay * HZ; 1564126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 1565126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (time_in_range_open(now, begin, expire)) 1566126e216a8730532dfb685205309275f87e3d133eTrond Myklebust return 1; 1567126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } 1568126e216a8730532dfb685205309275f87e3d133eTrond Myklebust return 0; 1569126e216a8730532dfb685205309275f87e3d133eTrond Myklebust} 1570126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 15721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Refresh credentials. XXX - finish 15731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_refresh(struct rpc_task *task) 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1577a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 1578cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust int ret = 0; 1579cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust 1580126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (gss_cred_is_negative_entry(cred)) 1581126e216a8730532dfb685205309275f87e3d133eTrond Myklebust return -EKEYEXPIRED; 1582126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 1583cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (!test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags) && 1584cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust !test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags)) { 1585cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust ret = gss_renew_cred(task); 1586cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (ret < 0) 1587cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust goto out; 1588a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust cred = task->tk_rqstp->rq_cred; 1589cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust } 15901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1591cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags)) 1592cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust ret = gss_refresh_upcall(task); 1593cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebustout: 1594cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return ret; 15951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 15961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15970df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust/* Dummy refresh routine: used only when destroying the context */ 15980df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic int 15990df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebustgss_refresh_null(struct rpc_task *task) 16000df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust{ 1601c297c8b99b07f496ff69a719cfb8e8fe852832edAndy Adamson return 0; 16020df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust} 16030df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 1604d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyanstatic __be32 * 1605d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyangss_validate(struct rpc_task *task, __be32 *p) 16061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1607a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 1609d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 seq; 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct kvec iov; 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf verf_buf; 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 flav,len; 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat; 161535fa5f7b35ca2076d594b2670a32d66dd3ae9eecAndy Adamson __be32 *ret = ERR_PTR(-EIO); 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1617632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s\n", task->tk_pid, __func__); 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flav = ntohl(*p++); 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((len = ntohl(*p++)) > RPC_MAX_AUTH_SIZE) 1621cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki goto out_bad; 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (flav != RPC_AUTH_GSS) 16231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_bad; 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq = htonl(task->tk_rqstp->rq_seqno); 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov.iov_base = &seq; 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov.iov_len = sizeof(seq); 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xdr_buf_from_iov(&iov, &verf_buf); 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.data = (u8 *)p; 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.len = len; 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 163135fa5f7b35ca2076d594b2670a32d66dd3ae9eecAndy Adamson ret = ERR_PTR(-EACCES); 163200fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_verify_mic(ctx->gc_gss_ctx, &verf_buf, &mic); 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1634fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 16350df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust if (maj_stat) { 1636632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s: gss_verify_mic returned error 0x%08x\n", 1637632f0d0503accb8ab749a1165af99d344579c37bChuck Lever task->tk_pid, __func__, maj_stat); 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_bad; 16390df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust } 164024b2605becc10ca63c4c30808fa59a8abbf68727J. Bruce Fields /* We leave it to unwrap to calculate au_rslack. For now we just 164124b2605becc10ca63c4c30808fa59a8abbf68727J. Bruce Fields * calculate the length of the verifier: */ 16421be27f36601973815171db684c711d30557cf50cTrond Myklebust cred->cr_auth->au_verfsize = XDR_QUADLEN(len) + 2; 16431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 1644632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s: gss_verify_mic succeeded.\n", 1645632f0d0503accb8ab749a1165af99d344579c37bChuck Lever task->tk_pid, __func__); 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p + XDR_QUADLEN(len); 16471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_bad: 16481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 164935fa5f7b35ca2076d594b2670a32d66dd3ae9eecAndy Adamson dprintk("RPC: %5u %s failed ret %ld.\n", task->tk_pid, __func__, 165035fa5f7b35ca2076d594b2670a32d66dd3ae9eecAndy Adamson PTR_ERR(ret)); 165135fa5f7b35ca2076d594b2670a32d66dd3ae9eecAndy Adamson return ret; 16521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16549f06c719f474be7003763284a990bed6377bb0d4Chuck Leverstatic void gss_wrap_req_encode(kxdreproc_t encode, struct rpc_rqst *rqstp, 16559f06c719f474be7003763284a990bed6377bb0d4Chuck Lever __be32 *p, void *obj) 16569f06c719f474be7003763284a990bed6377bb0d4Chuck Lever{ 16579f06c719f474be7003763284a990bed6377bb0d4Chuck Lever struct xdr_stream xdr; 16589f06c719f474be7003763284a990bed6377bb0d4Chuck Lever 16599f06c719f474be7003763284a990bed6377bb0d4Chuck Lever xdr_init_encode(&xdr, &rqstp->rq_snd_buf, p); 16609f06c719f474be7003763284a990bed6377bb0d4Chuck Lever encode(rqstp, &xdr, obj); 16619f06c719f474be7003763284a990bed6377bb0d4Chuck Lever} 16629f06c719f474be7003763284a990bed6377bb0d4Chuck Lever 16631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 16641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 16659f06c719f474be7003763284a990bed6377bb0d4Chuck Lever kxdreproc_t encode, struct rpc_rqst *rqstp, 16669f06c719f474be7003763284a990bed6377bb0d4Chuck Lever __be32 *p, void *obj) 16671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 16691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf integ_buf; 1670d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *integ_len = NULL; 16711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 1672d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan u32 offset; 1673d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *q; 16741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct kvec *iov; 16751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat = 0; 16761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 16771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds integ_len = p++; 16791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base; 16801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl(rqstp->rq_seqno); 16811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16829f06c719f474be7003763284a990bed6377bb0d4Chuck Lever gss_wrap_req_encode(encode, rqstp, p, obj); 16831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xdr_buf_subsegment(snd_buf, &integ_buf, 16851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset, snd_buf->len - offset)) 16861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 16871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *integ_len = htonl(integ_buf.len); 16881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* guess whether we're in the head or the tail: */ 1690cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki if (snd_buf->page_len || snd_buf->tail[0].iov_len) 16911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov = snd_buf->tail; 16921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 16931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov = snd_buf->head; 16941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = iov->iov_base + iov->iov_len; 16951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.data = (u8 *)(p + 1); 16961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 169700fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_get_mic(ctx->gc_gss_ctx, &integ_buf, &mic); 16981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = -EIO; /* XXX? */ 16991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1700fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 17011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (maj_stat) 17021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 17031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds q = xdr_encode_opaque(p, NULL, mic.len); 17041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = (u8 *)q - (u8 *)p; 17061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov->iov_len += offset; 17071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds snd_buf->len += offset; 17081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 17091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 17101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17112d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic void 17122d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldspriv_release_snd_buf(struct rpc_rqst *rqstp) 17132d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 17142d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int i; 17152d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17162d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields for (i=0; i < rqstp->rq_enc_pages_num; i++) 17172d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields __free_page(rqstp->rq_enc_pages[i]); 17182d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields kfree(rqstp->rq_enc_pages); 17192d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 17202d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17212d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic int 17222d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsalloc_enc_pages(struct rpc_rqst *rqstp) 17232d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 17242d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 17252d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int first, last, i; 17262d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17272d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (snd_buf->page_len == 0) { 17282d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages_num = 0; 17292d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 17302d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields } 17312d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17322d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields first = snd_buf->page_base >> PAGE_CACHE_SHIFT; 17332d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields last = (snd_buf->page_base + snd_buf->page_len - 1) >> PAGE_CACHE_SHIFT; 17342d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages_num = last - first + 1 + 1; 17352d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages 17362d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields = kmalloc(rqstp->rq_enc_pages_num * sizeof(struct page *), 17372d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields GFP_NOFS); 17382d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (!rqstp->rq_enc_pages) 17392d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields goto out; 17402d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields for (i=0; i < rqstp->rq_enc_pages_num; i++) { 17412d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages[i] = alloc_page(GFP_NOFS); 17422d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (rqstp->rq_enc_pages[i] == NULL) 17432d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields goto out_free; 17442d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields } 17452d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_release_snd_buf = priv_release_snd_buf; 17462d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 17472d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsout_free: 1748cdead7cf12896c0e50a8be2e52de52c364603095Trond Myklebust rqstp->rq_enc_pages_num = i; 1749cdead7cf12896c0e50a8be2e52de52c364603095Trond Myklebust priv_release_snd_buf(rqstp); 17502d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsout: 17512d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return -EAGAIN; 17522d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 17532d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17542d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic inline int 17552d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsgss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 17569f06c719f474be7003763284a990bed6377bb0d4Chuck Lever kxdreproc_t encode, struct rpc_rqst *rqstp, 17579f06c719f474be7003763284a990bed6377bb0d4Chuck Lever __be32 *p, void *obj) 17582d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 17592d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 17602d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 offset; 17612d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 maj_stat; 17622d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int status; 1763d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *opaque_len; 17642d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct page **inpages; 17652d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int first; 17662d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int pad; 17672d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct kvec *iov; 17682d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields char *tmp; 17692d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17702d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields opaque_len = p++; 17712d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base; 17722d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields *p++ = htonl(rqstp->rq_seqno); 17732d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17749f06c719f474be7003763284a990bed6377bb0d4Chuck Lever gss_wrap_req_encode(encode, rqstp, p, obj); 17752d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 17762d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields status = alloc_enc_pages(rqstp); 17772d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (status) 17782d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 17792d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields first = snd_buf->page_base >> PAGE_CACHE_SHIFT; 17802d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields inpages = snd_buf->pages + first; 17812d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->pages = rqstp->rq_enc_pages; 17822d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->page_base -= first << PAGE_CACHE_SHIFT; 17837561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman /* 17847561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * Give the tail its own page, in case we need extra space in the 17857561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * head when wrapping: 17867561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * 17877561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * call_allocate() allocates twice the slack space required 17887561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * by the authentication flavor to rq_callsize. 17897561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * For GSS, slack is GSS_CRED_SLACK. 17907561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman */ 17912d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (snd_buf->page_len || snd_buf->tail[0].iov_len) { 17922d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields tmp = page_address(rqstp->rq_enc_pages[rqstp->rq_enc_pages_num - 1]); 17932d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields memcpy(tmp, snd_buf->tail[0].iov_base, snd_buf->tail[0].iov_len); 17942d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->tail[0].iov_base = tmp; 17952d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields } 179600fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_wrap(ctx->gc_gss_ctx, offset, snd_buf, inpages); 17977561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman /* slack space should prevent this ever happening: */ 17982d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields BUG_ON(snd_buf->len > snd_buf->buflen); 1799cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki status = -EIO; 18002d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields /* We're assuming that when GSS_S_CONTEXT_EXPIRED, the encryption was 18012d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields * done anyway, so it's safe to put the request on the wire: */ 18022d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1803fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 18042d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields else if (maj_stat) 18052d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 18062d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 18072d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields *opaque_len = htonl(snd_buf->len - offset); 18082d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields /* guess whether we're in the head or the tail: */ 18092d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (snd_buf->page_len || snd_buf->tail[0].iov_len) 18102d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields iov = snd_buf->tail; 18112d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields else 18122d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields iov = snd_buf->head; 18132d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields p = iov->iov_base + iov->iov_len; 18142d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields pad = 3 - ((snd_buf->len - offset - 1) & 3); 18152d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields memset(p, 0, pad); 18162d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields iov->iov_len += pad; 18172d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->len += pad; 18182d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 18192d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 18202d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 18212d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 18221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 18231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_wrap_req(struct rpc_task *task, 18249f06c719f474be7003763284a990bed6377bb0d4Chuck Lever kxdreproc_t encode, void *rqstp, __be32 *p, void *obj) 18251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1826a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 18271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 18281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gc_base); 18291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 18301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 18311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1832632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s\n", task->tk_pid, __func__); 18331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx->gc_proc != RPC_GSS_PROC_DATA) { 18341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The spec seems a little ambiguous here, but I think that not 18351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * wrapping context destruction requests makes the most sense. 18361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 18379f06c719f474be7003763284a990bed6377bb0d4Chuck Lever gss_wrap_req_encode(encode, rqstp, p, obj); 18389f06c719f474be7003763284a990bed6377bb0d4Chuck Lever status = 0; 18391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 18401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (gss_cred->gc_service) { 184289f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches case RPC_GSS_SVC_NONE: 184389f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches gss_wrap_req_encode(encode, rqstp, p, obj); 184489f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches status = 0; 184589f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches break; 184689f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches case RPC_GSS_SVC_INTEGRITY: 184789f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches status = gss_wrap_req_integ(cred, ctx, encode, rqstp, p, obj); 184889f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches break; 184989f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches case RPC_GSS_SVC_PRIVACY: 185089f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches status = gss_wrap_req_priv(cred, ctx, encode, rqstp, p, obj); 185189f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches break; 18521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 18531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 18541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 1855632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s returning %d\n", task->tk_pid, __func__, status); 18561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 18571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 18601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_unwrap_resp_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 1861d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan struct rpc_rqst *rqstp, __be32 **p) 18621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf *rcv_buf = &rqstp->rq_rcv_buf; 18641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf integ_buf; 18651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 18661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 data_offset, mic_offset; 18671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 integ_len; 18681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat; 18691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 18701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds integ_len = ntohl(*(*p)++); 18721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (integ_len & 3) 18731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 18741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_offset = (u8 *)(*p) - (u8 *)rcv_buf->head[0].iov_base; 18751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic_offset = integ_len + data_offset; 18761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mic_offset > rcv_buf->len) 18771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 18781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ntohl(*(*p)++) != rqstp->rq_seqno) 18791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 18801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xdr_buf_subsegment(rcv_buf, &integ_buf, data_offset, 18821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic_offset - data_offset)) 18831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 18841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xdr_buf_read_netobj(rcv_buf, &mic, mic_offset)) 18861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 18871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 188800fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_verify_mic(ctx->gc_gss_ctx, &integ_buf, &mic); 18891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1890fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 18911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat != GSS_S_COMPLETE) 18921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 18931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 18941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 18951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 18962d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic inline int 18972d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsgss_unwrap_resp_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 1898d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan struct rpc_rqst *rqstp, __be32 **p) 18992d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 19002d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct xdr_buf *rcv_buf = &rqstp->rq_rcv_buf; 19012d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 offset; 19022d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 opaque_len; 19032d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 maj_stat; 19042d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int status = -EIO; 19052d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 19062d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields opaque_len = ntohl(*(*p)++); 19072d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields offset = (u8 *)(*p) - (u8 *)rcv_buf->head[0].iov_base; 19082d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (offset + opaque_len > rcv_buf->len) 19092d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 19102d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields /* remove padding: */ 19112d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rcv_buf->len = offset + opaque_len; 19122d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 191300fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_unwrap(ctx->gc_gss_ctx, offset, rcv_buf); 19142d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1915fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 19162d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (maj_stat != GSS_S_COMPLETE) 19172d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 19182d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (ntohl(*(*p)++) != rqstp->rq_seqno) 19192d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 19202d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 19212d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 19222d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 19232d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 1924bf2695516db982e90a22fc94f93491b481796bb1Chuck Leverstatic int 1925bf2695516db982e90a22fc94f93491b481796bb1Chuck Levergss_unwrap_req_decode(kxdrdproc_t decode, struct rpc_rqst *rqstp, 1926bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever __be32 *p, void *obj) 1927bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever{ 1928bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever struct xdr_stream xdr; 1929bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever 1930bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 1931bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever return decode(rqstp, &xdr, obj); 1932bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever} 19332d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 19341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 19351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_unwrap_resp(struct rpc_task *task, 1936bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever kxdrdproc_t decode, void *rqstp, __be32 *p, void *obj) 19371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1938a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 19391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 19401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gc_base); 19411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 1942d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *savedp = p; 19432d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct kvec *head = ((struct rpc_rqst *)rqstp)->rq_rcv_buf.head; 19442d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int savedlen = head->iov_len; 19451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 19461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 19471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx->gc_proc != RPC_GSS_PROC_DATA) 19481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_decode; 19491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (gss_cred->gc_service) { 195089f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches case RPC_GSS_SVC_NONE: 195189f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches break; 195289f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches case RPC_GSS_SVC_INTEGRITY: 195389f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches status = gss_unwrap_resp_integ(cred, ctx, rqstp, &p); 195489f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches if (status) 195589f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches goto out; 195689f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches break; 195789f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches case RPC_GSS_SVC_PRIVACY: 195889f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches status = gss_unwrap_resp_priv(cred, ctx, rqstp, &p); 195989f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches if (status) 196089f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches goto out; 196189f0e4feafb64643b0f0aba9d89984362bac9739Joe Perches break; 19621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 196324b2605becc10ca63c4c30808fa59a8abbf68727J. Bruce Fields /* take into account extra slack for integrity and privacy cases: */ 19641be27f36601973815171db684c711d30557cf50cTrond Myklebust cred->cr_auth->au_rslack = cred->cr_auth->au_verfsize + (p - savedp) 19652d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields + (savedlen - head->iov_len); 19661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_decode: 1967bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever status = gss_unwrap_req_decode(decode, rqstp, p, obj); 19681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 19691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 1970632f0d0503accb8ab749a1165af99d344579c37bChuck Lever dprintk("RPC: %5u %s returning %d\n", 1971632f0d0503accb8ab749a1165af99d344579c37bChuck Lever task->tk_pid, __func__, status); 19721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 19731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1974cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki 1975f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_authops authgss_ops = { 19761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .owner = THIS_MODULE, 19771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .au_flavor = RPC_AUTH_GSS, 19781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .au_name = "RPCSEC_GSS", 19791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .create = gss_create, 19801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .destroy = gss_destroy, 19811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .lookup_cred = gss_lookup_cred, 198280df9d202255071c8ec610a6a3fdca5cac69f7bdStanislav Kinsbursky .crcreate = gss_create_cred, 19836a1a1e34dc55f17e7bd260809207442dbb7a0296Chuck Lever .list_pseudoflavors = gss_mech_list_pseudoflavors, 19849568c5e9a61de49f67f524404a27a1014a8d7f1eChuck Lever .info2flavor = gss_mech_info2flavor, 1985a77c806fb9d097bb7733b64207cf52fc2c6438bbChuck Lever .flavor2info = gss_mech_flavor2info, 19861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 19871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1988f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_credops gss_credops = { 1989a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .cr_name = "AUTH_GSS", 1990a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crdestroy = gss_destroy_cred, 1991a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .cr_init = gss_cred_init, 1992a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crbind = rpcauth_generic_bind_cred, 1993a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crmatch = gss_match, 1994a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crmarshal = gss_marshal, 1995a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crrefresh = gss_refresh, 1996a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crvalidate = gss_validate, 1997a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crwrap_req = gss_wrap_req, 1998a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crunwrap_resp = gss_unwrap_resp, 1999a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crkey_timeout = gss_key_timeout, 2000a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crstringify_acceptor = gss_stringify_acceptor, 20011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 20021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20030df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic const struct rpc_credops gss_nullops = { 2004a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .cr_name = "AUTH_GSS", 2005a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crdestroy = gss_destroy_nullcred, 2006a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crbind = rpcauth_generic_bind_cred, 2007a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crmatch = gss_match, 2008a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crmarshal = gss_marshal, 2009a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crrefresh = gss_refresh_null, 2010a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crvalidate = gss_validate, 2011a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crwrap_req = gss_wrap_req, 2012a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crunwrap_resp = gss_unwrap_resp, 2013a0337d1ddb5a4bd609e3ff0955551cb240340340Jeff Layton .crstringify_acceptor = gss_stringify_acceptor, 20140df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust}; 20150df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 2016b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v0 = { 2017c1225158a8dad9e9d5eee8a17dbbd9c7cda05ab9Peng Tao .upcall = rpc_pipe_generic_upcall, 201834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .downcall = gss_pipe_downcall, 201934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .destroy_msg = gss_pipe_destroy_msg, 202034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .open_pipe = gss_pipe_open_v0, 202134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .release_pipe = gss_pipe_release, 202234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\}; 202334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 2024b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v1 = { 2025c1225158a8dad9e9d5eee8a17dbbd9c7cda05ab9Peng Tao .upcall = rpc_pipe_generic_upcall, 20261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .downcall = gss_pipe_downcall, 20271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .destroy_msg = gss_pipe_destroy_msg, 202834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .open_pipe = gss_pipe_open_v1, 20291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .release_pipe = gss_pipe_release, 20301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 20311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2032a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsburskystatic __net_init int rpcsec_gss_init_net(struct net *net) 2033a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky{ 2034a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky return gss_svc_init_net(net); 2035a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky} 2036a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky 2037a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsburskystatic __net_exit void rpcsec_gss_exit_net(struct net *net) 2038a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky{ 2039a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky gss_svc_shutdown_net(net); 2040a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky} 2041a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky 2042a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsburskystatic struct pernet_operations rpcsec_gss_net_ops = { 2043a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky .init = rpcsec_gss_init_net, 2044a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky .exit = rpcsec_gss_exit_net, 2045a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky}; 2046a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky 20471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 20481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Initialize RPCSEC_GSS module 20491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 20501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init_rpcsec_gss(void) 20511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 20521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = 0; 20531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = rpcauth_register(&authgss_ops); 20551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 20561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 20571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = gss_svc_init(); 20581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 20591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_unregister; 2060a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky err = register_pernet_subsys(&rpcsec_gss_net_ops); 2061a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky if (err) 2062a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky goto out_svc_exit; 206379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ rpc_init_wait_queue(&pipe_version_rpc_waitqueue, "gss pipe version"); 20641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2065a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsburskyout_svc_exit: 2066a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky gss_svc_shutdown(); 20671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_unregister: 20681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpcauth_unregister(&authgss_ops); 20691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 20701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 20711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 20731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit exit_rpcsec_gss(void) 20741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2075a1db410d0bbadc49943f0fcddb21702ceb429396Stanislav Kinsbursky unregister_pernet_subsys(&rpcsec_gss_net_ops); 20761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_svc_shutdown(); 20771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpcauth_unregister(&authgss_ops); 2078bf12691d846b48fa6e3289810a822687457036cfJesper Dangaard Brouer rcu_barrier(); /* Wait for completion of call_rcu()'s */ 20791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 20801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 208171afa85e798ebc81054164c947b189d163c92b30Chuck LeverMODULE_ALIAS("rpc-auth-6"); 20821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 2083126e216a8730532dfb685205309275f87e3d133eTrond Myklebustmodule_param_named(expired_cred_retry_delay, 2084126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_expired_cred_retry_delay, 2085126e216a8730532dfb685205309275f87e3d133eTrond Myklebust uint, 0644); 2086126e216a8730532dfb685205309275f87e3d133eTrond MyklebustMODULE_PARM_DESC(expired_cred_retry_delay, "Timeout (in seconds) until " 2087126e216a8730532dfb685205309275f87e3d133eTrond Myklebust "the RPC engine retries an expired credential"); 2088126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 20894de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamsonmodule_param_named(key_expire_timeo, 20904de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson gss_key_expire_timeo, 20914de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson uint, 0644); 20924de6caa270afaa381dd3373e9e6d148b1090e0ecAndy AdamsonMODULE_PARM_DESC(key_expire_timeo, "Time (in seconds) at the end of a " 20934de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson "credential keys lifetime where the NFS layer cleans up " 20944de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson "prior to key expiration"); 20954de6caa270afaa381dd3373e9e6d148b1090e0ecAndy Adamson 20961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(init_rpcsec_gss) 20971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(exit_rpcsec_gss) 2098