auth_gss.c revision 5afa9133cfe67f1bfead6049a9640c9262a7101c
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> 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_authops authgss_ops; 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 57f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_credops gss_credops; 580df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic const struct rpc_credops gss_nullops; 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 60126e216a8730532dfb685205309275f87e3d133eTrond Myklebust#define GSS_RETRY_EXPIRED 5 61126e216a8730532dfb685205309275f87e3d133eTrond Myklebuststatic unsigned int gss_expired_cred_retry_delay = GSS_RETRY_EXPIRED; 62126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef RPC_DEBUG 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds# define RPCDBG_FACILITY RPCDBG_AUTH 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 67725f2865d4df31ac0768b13ae763beadc4bb8ce9Kevin Coffman#define GSS_CRED_SLACK (RPC_MAX_AUTH_SIZE * 2) 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* length of a krb5 verifier (48), plus data added before arguments when 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * using integrity (two 4-byte integers): */ 70adeb8133dd57f380e70a389a89a2ea3ae227f9e2Olga Kornievskaia#define GSS_VERF_SLACK 100 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct gss_auth { 730285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust struct kref kref; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_auth rpc_auth; 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_api_mech *mech; 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum rpc_gss_svc service; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_clnt *client; 7834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* 7934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * There are two upcall pipes; dentry[1], named "gssd", is used 8034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * for the new text-based upcall; dentry[0] is named after the 8134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * mechanism (for example, "krb5") and exists for 8234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * backwards-compatibility with older gssd's. 8334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ */ 8434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ struct dentry *dentry[2]; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\/* pipe_version >= 0 if and only if someone has a pipe open. */ 8879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static int pipe_version = -1; 89cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\static atomic_t pipe_users = ATOMIC_INIT(0); 9079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static DEFINE_SPINLOCK(pipe_version_lock); 9179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static struct rpc_wait_queue pipe_version_rpc_waitqueue; 9279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static DECLARE_WAIT_QUEUE_HEAD(pipe_version_waitqueue); 93cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\ 945d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebuststatic void gss_free_ctx(struct gss_cl_ctx *); 95b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v0; 96b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v1; 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct gss_cl_ctx * 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_get_ctx(struct gss_cl_ctx *ctx) 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&ctx->count); 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx; 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_put_ctx(struct gss_cl_ctx *ctx) 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (atomic_dec_and_test(&ctx->count)) 1095d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust gss_free_ctx(ctx); 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1125d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust/* gss_cred_set_ctx: 1135d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust * called by gss_upcall_callback and gss_create_upcall in order 1145d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust * to set the gss context. The actual exchange of an old context 1155d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust * and a new one is protected by the inode->i_lock. 1165d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust */ 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_cred_set_ctx(struct rpc_cred *cred, struct gss_cl_ctx *ctx) 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 1215d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 122cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (!test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags)) 123cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return; 1247b6962b0a6000df48c8a5fd967d262f77704101bTrond Myklebust gss_get_ctx(ctx); 1255d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust rcu_assign_pointer(gss_cred->gc_ctx, ctx); 126fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust set_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 127cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust smp_mb__before_clear_bit(); 128fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_NEW, &cred->cr_flags); 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const void * 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssimple_get_bytes(const void *p, const void *end, void *res, size_t len) 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *q = (const void *)((const char *)p + len); 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(q > end || q < p)) 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(-EFAULT); 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memcpy(res, p, len); 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return q; 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline const void * 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssimple_get_netobj(const void *p, const void *end, struct xdr_netobj *dest) 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *q; 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int len; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &len, sizeof(len)); 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds q = (const void *)((const char *)p + len); 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(q > end || q < p)) 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(-EFAULT); 1530f38b873aeaae698c3693748438547c8493165fbTrond Myklebust dest->data = kmemdup(p, len, GFP_NOFS); 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(dest->data == NULL)) 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(-ENOMEM); 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dest->len = len; 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return q; 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_cl_ctx * 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_cred_get_ctx(struct rpc_cred *cred) 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = NULL; 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1665d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust rcu_read_lock(); 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_cred->gc_ctx) 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx = gss_get_ctx(gss_cred->gc_ctx); 1695d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust rcu_read_unlock(); 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx; 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_cl_ctx * 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_alloc_context(void) 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1780f38b873aeaae698c3693748438547c8493165fbTrond Myklebust ctx = kzalloc(sizeof(*ctx), GFP_NOFS); 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx != NULL) { 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx->gc_proc = RPC_GSS_PROC_DATA; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx->gc_seq = 1; /* NetApp 6.4R1 doesn't accept seq. no. 0 */ 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&ctx->gc_seq_lock); 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_set(&ctx->count,1); 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ctx; 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GSSD_MIN_TIMEOUT (60 * 60) 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic const void * 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_fill_context(const void *p, const void *end, struct gss_cl_ctx *ctx, struct gss_api_mech *gm) 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *q; 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int seclen; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int timeout; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 window_size; 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* First unsigned int gives the lifetime (in seconds) of the cred */ 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &timeout, sizeof(timeout)); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (timeout == 0) 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds timeout = GSSD_MIN_TIMEOUT; 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx->gc_expiry = jiffies + (unsigned long)timeout * HZ * 3 / 4; 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Sequence number window. Determines the maximum number of simultaneous requests */ 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &window_size, sizeof(window_size)); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx->gc_win = window_size; 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gssd signals an error by passing ctx->gc_win = 0: */ 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx->gc_win == 0) { 212dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton /* 213dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton * in which case, p points to an error code. Anything other 214dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton * than -EKEYEXPIRED gets converted to -EACCES. 215dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton */ 216dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton p = simple_get_bytes(p, end, &ret, sizeof(ret)); 217dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton if (!IS_ERR(p)) 218dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton p = (ret == -EKEYEXPIRED) ? ERR_PTR(-EKEYEXPIRED) : 219dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton ERR_PTR(-EACCES); 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* copy the opaque wire context */ 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_netobj(p, end, &ctx->gc_wire_ctx); 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* import the opaque security context */ 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(p, end, &seclen, sizeof(seclen)); 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds q = (const void *)((const char *)p + seclen); 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (unlikely(q > end || q < p)) { 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = ERR_PTR(-EFAULT); 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2351f4c86c0be9064ab4eebd9e67c84606c1cfeec4bTrond Myklebust ret = gss_import_sec_context(p, seclen, gm, &ctx->gc_gss_ctx, GFP_NOFS); 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret < 0) { 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = ERR_PTR(ret); 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return q; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr: 2428885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_fill_context returning %ld\n", -PTR_ERR(p)); 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 24634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\#define UPCALL_BUF_LEN 128 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct gss_upcall_msg { 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_t count; 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uid_t uid; 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_pipe_msg msg; 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct list_head list; 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth *auth; 2545b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct rpc_inode *inode; 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_wait_queue rpc_waitqueue; 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t waitqueue; 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx; 25834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ char databuf[UPCALL_BUF_LEN]; 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 26179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static int get_pipe_version(void) 26279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\{ 26379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ int ret; 26479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ 26579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_lock(&pipe_version_lock); 26679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ if (pipe_version >= 0) { 26779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ atomic_inc(&pipe_users); 26834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ ret = pipe_version; 26979a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } else 27079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ ret = -EAGAIN; 27179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_unlock(&pipe_version_lock); 27279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ return ret; 27379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\} 27479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ 27579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\static void put_pipe_version(void) 27679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\{ 27779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ if (atomic_dec_and_lock(&pipe_users, &pipe_version_lock)) { 27879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ pipe_version = -1; 27979a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_unlock(&pipe_version_lock); 28079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 28179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\} 28279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_release_msg(struct gss_upcall_msg *gss_msg) 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!atomic_dec_and_test(&gss_msg->count)) 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 28879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ put_pipe_version(); 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds BUG_ON(!list_empty(&gss_msg->list)); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg->ctx != NULL) 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(gss_msg->ctx); 292f6a1cc89309f0ae847a9b6fe418d1c4215e5bc55Trond Myklebust rpc_destroy_wait_queue(&gss_msg->rpc_waitqueue); 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(gss_msg); 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_upcall_msg * 2976e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust__gss_find_upcall(struct rpc_inode *rpci, uid_t uid) 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *pos; 3006e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust list_for_each_entry(pos, &rpci->in_downcall, list) { 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (pos->uid != uid) 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds continue; 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&pos->count); 3048885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_find_upcall found msg %p\n", pos); 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return pos; 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3078885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_find_upcall found nothing\n"); 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 311720b8f2d6f7de9e16f1217448cc7396e1604e175\\\"J. Bruce Fields\\\/* Try to add an upcall to the pipefs queue. 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * If an upcall owned by our uid already exists, then we return a reference 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to that upcall instead of adding the new upcall. 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct gss_upcall_msg * 316053e324f67b9921fe7de0c4cbc720d29cb4bf207Suresh Jayaramangss_add_msg(struct gss_upcall_msg *gss_msg) 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3185b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct rpc_inode *rpci = gss_msg->inode; 3195b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct inode *inode = &rpci->vfs_inode; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *old; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 322b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_lock(&inode->i_lock); 3236e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust old = __gss_find_upcall(rpci, gss_msg->uid); 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old == NULL) { 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 3266e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust list_add(&gss_msg->list, &rpci->in_downcall); 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg = old; 329b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_unlock(&inode->i_lock); 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return gss_msg; 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds__gss_unhash_msg(struct gss_upcall_msg *gss_msg) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds list_del_init(&gss_msg->list); 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpc_wake_up_status(&gss_msg->rpc_waitqueue, gss_msg->msg.errno); 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wake_up_all(&gss_msg->waitqueue); 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_dec(&gss_msg->count); 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_unhash_msg(struct gss_upcall_msg *gss_msg) 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3455b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct inode *inode = &gss_msg->inode->vfs_inode; 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3473b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust if (list_empty(&gss_msg->list)) 3483b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust return; 349b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_lock(&inode->i_lock); 3503b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust if (!list_empty(&gss_msg->list)) 3513b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust __gss_unhash_msg(gss_msg); 352b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_unlock(&inode->i_lock); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 356126e216a8730532dfb685205309275f87e3d133eTrond Myklebustgss_handle_downcall_result(struct gss_cred *gss_cred, struct gss_upcall_msg *gss_msg) 357126e216a8730532dfb685205309275f87e3d133eTrond Myklebust{ 358126e216a8730532dfb685205309275f87e3d133eTrond Myklebust switch (gss_msg->msg.errno) { 359126e216a8730532dfb685205309275f87e3d133eTrond Myklebust case 0: 360126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (gss_msg->ctx == NULL) 361126e216a8730532dfb685205309275f87e3d133eTrond Myklebust break; 362126e216a8730532dfb685205309275f87e3d133eTrond Myklebust clear_bit(RPCAUTH_CRED_NEGATIVE, &gss_cred->gc_base.cr_flags); 363126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred_set_ctx(&gss_cred->gc_base, gss_msg->ctx); 364126e216a8730532dfb685205309275f87e3d133eTrond Myklebust break; 365126e216a8730532dfb685205309275f87e3d133eTrond Myklebust case -EKEYEXPIRED: 366126e216a8730532dfb685205309275f87e3d133eTrond Myklebust set_bit(RPCAUTH_CRED_NEGATIVE, &gss_cred->gc_base.cr_flags); 367126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } 368126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred->gc_upcall_timestamp = jiffies; 369126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred->gc_upcall = NULL; 370126e216a8730532dfb685205309275f87e3d133eTrond Myklebust rpc_wake_up_status(&gss_msg->rpc_waitqueue, gss_msg->msg.errno); 371126e216a8730532dfb685205309275f87e3d133eTrond Myklebust} 372126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 373126e216a8730532dfb685205309275f87e3d133eTrond Myklebuststatic void 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_upcall_callback(struct rpc_task *task) 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 376a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct gss_cred *gss_cred = container_of(task->tk_rqstp->rq_cred, 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred, gc_base); 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg = gss_cred->gc_upcall; 3795b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct inode *inode = &gss_msg->inode->vfs_inode; 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3815d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust spin_lock(&inode->i_lock); 382126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_handle_downcall_result(gss_cred, gss_msg); 383b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_unlock(&inode->i_lock); 384126e216a8730532dfb685205309275f87e3d133eTrond Myklebust task->tk_status = gss_msg->msg.errno; 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static void gss_encode_v0_msg(struct gss_upcall_msg *gss_msg) 38934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 39034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_msg->msg.data = &gss_msg->uid; 39134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_msg->msg.len = sizeof(gss_msg->uid); 39234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 39334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 3948b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaiastatic void gss_encode_v1_msg(struct gss_upcall_msg *gss_msg, 3952efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia struct rpc_clnt *clnt, int machine_cred) 39634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 397683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust struct gss_api_mech *mech = gss_msg->auth->mech; 3988b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia char *p = gss_msg->databuf; 3998b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia int len = 0; 4008b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia 4018b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia gss_msg->msg.len = sprintf(gss_msg->databuf, "mech=%s uid=%d ", 402683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust mech->gm_name, 40334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_msg->uid); 4048b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia p += gss_msg->msg.len; 4058b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia if (clnt->cl_principal) { 4068b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia len = sprintf(p, "target=%s ", clnt->cl_principal); 4078b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia p += len; 4088b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia gss_msg->msg.len += len; 4098b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia } 4102efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia if (machine_cred) { 4112efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia len = sprintf(p, "service=* "); 4122efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia p += len; 4132efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia gss_msg->msg.len += len; 4142efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia } else if (!strcmp(clnt->cl_program->name, "nfs4_cb")) { 4152efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia len = sprintf(p, "service=nfs "); 4162efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia p += len; 4172efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia gss_msg->msg.len += len; 4182efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia } 419683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust if (mech->gm_upcall_enctypes) { 420f8628220bb395104697be9c447c1085846dfc97cKevin Coffman len = sprintf(p, "enctypes=%s ", mech->gm_upcall_enctypes); 421683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust p += len; 422683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust gss_msg->msg.len += len; 423683ac6656cb05b6e83593770ffc049eee4a4d119Trond Myklebust } 4248b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia len = sprintf(p, "\n"); 4258b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia gss_msg->msg.len += len; 4268b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaia 42734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_msg->msg.data = gss_msg->databuf; 42834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ BUG_ON(gss_msg->msg.len > UPCALL_BUF_LEN); 42934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 43034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 4318b1c7bf5b624c9bc91b41ae577b9fc5c21641705Olga Kornievskaiastatic void gss_encode_msg(struct gss_upcall_msg *gss_msg, 4322efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia struct rpc_clnt *clnt, int machine_cred) 43334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 43434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ if (pipe_version == 0) 43534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_encode_v0_msg(gss_msg); 43634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ else /* pipe_version == 1 */ 4372efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia gss_encode_v1_msg(gss_msg, clnt, machine_cred); 43834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 43934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline struct gss_upcall_msg * 4412efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaiagss_alloc_msg(struct gss_auth *gss_auth, uid_t uid, struct rpc_clnt *clnt, 4422efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia int machine_cred) 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 44579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ int vers; 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4470f38b873aeaae698c3693748438547c8493165fbTrond Myklebust gss_msg = kzalloc(sizeof(*gss_msg), GFP_NOFS); 448db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ if (gss_msg == NULL) 449db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ return ERR_PTR(-ENOMEM); 45079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ vers = get_pipe_version(); 45179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ if (vers < 0) { 45279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ kfree(gss_msg); 45379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ return ERR_PTR(vers); 45479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 45534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_msg->inode = RPC_I(gss_auth->dentry[vers]->d_inode); 456db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ INIT_LIST_HEAD(&gss_msg->list); 457db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ rpc_init_wait_queue(&gss_msg->rpc_waitqueue, "RPCSEC_GSS upcall waitq"); 458db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ init_waitqueue_head(&gss_msg->waitqueue); 459db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ atomic_set(&gss_msg->count, 1); 460db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ gss_msg->uid = uid; 461db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ gss_msg->auth = gss_auth; 4622efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia gss_encode_msg(gss_msg, clnt, machine_cred); 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return gss_msg; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct gss_upcall_msg * 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_setup_upcall(struct rpc_clnt *clnt, struct gss_auth *gss_auth, struct rpc_cred *cred) 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4697c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust struct gss_cred *gss_cred = container_of(cred, 4707c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust struct gss_cred, gc_base); 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_new, *gss_msg; 4727c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust uid_t uid = cred->cr_uid; 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4742efef7080f471d312a9c4feb3dc5ee038039c7edOlga Kornievskaia gss_new = gss_alloc_msg(gss_auth, uid, clnt, gss_cred->gc_machine_cred); 475db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ if (IS_ERR(gss_new)) 476db75b3d6b5b0dad29860370618ea94d2726641b4\"J. Bruce Fields\ return gss_new; 477053e324f67b9921fe7de0c4cbc720d29cb4bf207Suresh Jayaraman gss_msg = gss_add_msg(gss_new); 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg == gss_new) { 4795b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct inode *inode = &gss_new->inode->vfs_inode; 4805b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ int res = rpc_queue_upcall(inode, &gss_new->msg); 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (res) { 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_unhash_msg(gss_new); 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg = ERR_PTR(res); 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_new); 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return gss_msg; 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 490b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\static void warn_gssd(void) 491b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\{ 492b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ static unsigned long ratelimit; 493b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ unsigned long now = jiffies; 494b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ 495b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ if (time_after(now, ratelimit)) { 496b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ printk(KERN_WARNING "RPC: AUTH_GSS upcall timed out.\n" 497b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ "Please check user daemon is running.\n"); 498b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ ratelimit = now + 15*HZ; 499b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ } 500b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\} 501b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_refresh_upcall(struct rpc_task *task) 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 505a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 5064a8c1344dccb848dbcf0edabc8b5c51a8ecf2808Trond Myklebust struct gss_auth *gss_auth = container_of(cred->cr_auth, 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth, rpc_auth); 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred, gc_base); 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 5115b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct inode *inode; 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = 0; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5148885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_refresh_upcall for uid %u\n", task->tk_pid, 5158885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever cred->cr_uid); 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg = gss_setup_upcall(task->tk_client, gss_auth, cred); 517480e3243df156e39eea6c91057e2ae612a6bbe19Roel Kluin if (PTR_ERR(gss_msg) == -EAGAIN) { 51879a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ /* XXX: warning on the first, under the assumption we 51979a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ * shouldn't normally hit this case on a refresh. */ 52079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ warn_gssd(); 52179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ task->tk_timeout = 15*HZ; 52279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ rpc_sleep_on(&pipe_version_rpc_waitqueue, task, NULL); 523d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker return -EAGAIN; 52479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(gss_msg)) { 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(gss_msg); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5295b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ inode = &gss_msg->inode->vfs_inode; 530b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_lock(&inode->i_lock); 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_cred->gc_upcall != NULL) 5325d00837b90340af9106dcd93af75fd664c8eb87fTrond Myklebust rpc_sleep_on(&gss_cred->gc_upcall->rpc_waitqueue, task, NULL); 533126e216a8730532dfb685205309275f87e3d133eTrond Myklebust else if (gss_msg->ctx == NULL && gss_msg->msg.errno >= 0) { 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds task->tk_timeout = 0; 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_cred->gc_upcall = gss_msg; 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* gss_upcall_callback will release the reference to gss_upcall_msg */ 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 5385d00837b90340af9106dcd93af75fd664c8eb87fTrond Myklebust rpc_sleep_on(&gss_msg->rpc_waitqueue, task, gss_upcall_callback); 539126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } else { 540126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_handle_downcall_result(gss_cred, gss_msg); 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = gss_msg->msg.errno; 542126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } 543b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_unlock(&inode->i_lock); 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 5468885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_refresh_upcall for uid %u result %d\n", 5478885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever task->tk_pid, cred->cr_uid, err); 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_create_upcall(struct gss_auth *gss_auth, struct gss_cred *gss_cred) 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5545b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ struct inode *inode; 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_cred *cred = &gss_cred->gc_base; 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds DEFINE_WAIT(wait); 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = 0; 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5608885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_upcall for uid %u\n", cred->cr_uid); 56179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\retry: 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg = gss_setup_upcall(gss_auth->client, gss_auth, cred); 56379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ if (PTR_ERR(gss_msg) == -EAGAIN) { 56479a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ err = wait_event_interruptible_timeout(pipe_version_waitqueue, 56579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ pipe_version >= 0, 15*HZ); 566d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker if (pipe_version < 0) { 567d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker warn_gssd(); 568d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker err = -EACCES; 569d1a8016a2d1e75021ecc8715e3c81442d7218eb6Bryan Schumaker } 57079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ if (err) 57179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ goto out; 57279a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ goto retry; 57379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(gss_msg)) { 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(gss_msg); 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5785b7ddd4a7b19f913901140ef7807dbf5e2b301cd\"J. Bruce Fields\ inode = &gss_msg->inode->vfs_inode; 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (;;) { 5805afa9133cfe67f1bfead6049a9640c9262a7101cTrond Myklebust prepare_to_wait(&gss_msg->waitqueue, &wait, TASK_KILLABLE); 581b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_lock(&inode->i_lock); 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg->ctx != NULL || gss_msg->msg.errno < 0) { 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 585b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_unlock(&inode->i_lock); 5865afa9133cfe67f1bfead6049a9640c9262a7101cTrond Myklebust if (fatal_signal_pending(current)) { 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -ERESTARTSYS; 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_intr; 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds schedule(); 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (gss_msg->ctx) 5937b6962b0a6000df48c8a5fd967d262f77704101bTrond Myklebust gss_cred_set_ctx(cred, gss_msg->ctx); 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = gss_msg->msg.errno; 5965d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust spin_unlock(&inode->i_lock); 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_intr: 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds finish_wait(&gss_msg->waitqueue, &wait); 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 6018885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_create_upcall for uid %u result %d\n", 6028885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever cred->cr_uid, err); 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg, 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char __user *dst, size_t buflen) 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *data = (char *)msg->data + msg->copied; 6117df089952fca41cb336733e1167c0a25e5a025d8Chuck Lever size_t mlen = min(msg->len, buflen); 6127df089952fca41cb336733e1167c0a25e5a025d8Chuck Lever unsigned long left; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds left = copy_to_user(dst, data, mlen); 6157df089952fca41cb336733e1167c0a25e5a025d8Chuck Lever if (left == mlen) { 6167df089952fca41cb336733e1167c0a25e5a025d8Chuck Lever msg->errno = -EFAULT; 6177df089952fca41cb336733e1167c0a25e5a025d8Chuck Lever return -EFAULT; 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6197df089952fca41cb336733e1167c0a25e5a025d8Chuck Lever 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mlen -= left; 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msg->copied += mlen; 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msg->errno = 0; 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return mlen; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MSG_BUF_MAXSIZE 1024 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic ssize_t 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds const void *p, *end; 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds void *buf; 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg; 634b185f835e243e654047ae85f42346827d3894171Trond Myklebust struct inode *inode = filp->f_path.dentry->d_inode; 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx; 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds uid_t uid; 6373b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust ssize_t err = -EFBIG; 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mlen > MSG_BUF_MAXSIZE) 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -ENOMEM; 6420f38b873aeaae698c3693748438547c8493165fbTrond Myklebust buf = kmalloc(mlen, GFP_NOFS); 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf) 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EFAULT; 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(buf, src, mlen)) 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end = (const void *)((char *)buf + mlen); 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = simple_get_bytes(buf, end, &uid, sizeof(uid)); 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) { 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(p); 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -ENOMEM; 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ctx = gss_alloc_context(); 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx == NULL) 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err; 6613b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust 6623b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust err = -ENOENT; 6633b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust /* Find a matching upcall */ 6643b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust spin_lock(&inode->i_lock); 6656e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust gss_msg = __gss_find_upcall(RPC_I(inode), uid); 6663b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust if (gss_msg == NULL) { 6673b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust spin_unlock(&inode->i_lock); 6683b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust goto err_put_ctx; 6693b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust } 6703b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust list_del_init(&gss_msg->list); 6713b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust spin_unlock(&inode->i_lock); 6723b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust 6736e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust p = gss_fill_context(p, end, ctx, gss_msg->auth->mech); 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(p)) { 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = PTR_ERR(p); 676486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton switch (err) { 677486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -EACCES: 678dc5ddce956660247e004a4b20a26b7d137ab1644Jeff Layton case -EKEYEXPIRED: 679486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton gss_msg->msg.errno = err; 680486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton err = mlen; 681486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton break; 682486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -EFAULT: 683486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -ENOMEM: 684486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -EINVAL: 685486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton case -ENOSYS: 686486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton gss_msg->msg.errno = -EAGAIN; 687486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton break; 688486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton default: 689486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton printk(KERN_CRIT "%s: bad return from " 6906c8530993e1fdf1d6af0403e796fe14d80b4b097Randy Dunlap "gss_fill_context: %zd\n", __func__, err); 691486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton BUG(); 692486bad2e40e938cd68fd853b7a9fa3115a9d3a4aJeff Layton } 6933b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust goto err_release_msg; 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6953b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust gss_msg->ctx = gss_get_ctx(ctx); 6963b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust err = mlen; 6973b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust 6983b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebusterr_release_msg: 699b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_lock(&inode->i_lock); 7003b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust __gss_unhash_msg(gss_msg); 7013b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust spin_unlock(&inode->i_lock); 7023b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust gss_release_msg(gss_msg); 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr_put_ctx: 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr: 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(buf); 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 7083b68aaeaf54065e5c44583a1d33ffb7793953ba4Trond Myklebust dprintk("RPC: gss_pipe_downcall returning %Zd\n", err); 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 71234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static int gss_pipe_open(struct inode *inode, int new_version) 713cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\{ 71434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ int ret = 0; 71534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 71679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_lock(&pipe_version_lock); 71779a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ if (pipe_version < 0) { 71834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* First open of any gss pipe determines the version: */ 71934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ pipe_version = new_version; 72079a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ rpc_wake_up(&pipe_version_rpc_waitqueue); 72179a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ wake_up(&pipe_version_waitqueue); 72234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ } else if (pipe_version != new_version) { 72334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* Trying to open a pipe of a different version */ 72434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ ret = -EBUSY; 72534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ goto out; 72679a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ } 727cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\ atomic_inc(&pipe_users); 72834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\out: 72979a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ spin_unlock(&pipe_version_lock); 73034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ return ret; 73134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 73234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 73334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 73434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static int gss_pipe_open_v0(struct inode *inode) 73534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 73634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ return gss_pipe_open(inode, 0); 73734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\} 73834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 73934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\static int gss_pipe_open_v1(struct inode *inode) 74034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\{ 74134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ return gss_pipe_open(inode, 1); 742cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\} 743cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\ 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_pipe_release(struct inode *inode) 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_inode *rpci = RPC_I(inode); 7486e84c7b66a0aa0be16a7728d1e687c57978dac2cTrond Myklebust struct gss_upcall_msg *gss_msg; 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7505a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebustrestart: 751b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_lock(&inode->i_lock); 7525a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebust list_for_each_entry(gss_msg, &rpci->in_downcall, list) { 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7545a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebust if (!list_empty(&gss_msg->msg.list)) 7555a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebust continue; 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg->msg.errno = -EPIPE; 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __gss_unhash_msg(gss_msg); 759b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_unlock(&inode->i_lock); 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 7615a67657a2e90c9e4a48518f95d4ba7777aa20fbbTrond Myklebust goto restart; 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 763b185f835e243e654047ae85f42346827d3894171Trond Myklebust spin_unlock(&inode->i_lock); 764cf81939d6fcdf381fcb069d780c29eceb516bccd\"J. Bruce Fields\ 76579a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ put_pipe_version(); 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_pipe_destroy_msg(struct rpc_pipe_msg *msg) 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_upcall_msg *gss_msg = container_of(msg, struct gss_upcall_msg, msg); 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (msg->errno < 0) { 7748885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_pipe_destroy_msg releasing msg %p\n", 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_msg); 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_inc(&gss_msg->count); 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_unhash_msg(gss_msg); 778b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ if (msg->errno == -ETIMEDOUT) 779b03568c32226163cb3588ea8993adb268ed497a5\"J. Bruce Fields\ warn_gssd(); 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_release_msg(gss_msg); 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 784cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki/* 785cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki * NOTE: we have the opportunity to use different 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * parameters based on the input flavor (which must be a pseudoflavor) 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct rpc_auth * 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_create(struct rpc_clnt *clnt, rpc_authflavor_t flavor) 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth *gss_auth; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct rpc_auth * auth; 7936a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields int err = -ENOMEM; /* XXX? */ 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7958885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: creating GSS authenticator for client %p\n", clnt); 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!try_module_get(THIS_MODULE)) 7986a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields return ERR_PTR(err); 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(gss_auth = kmalloc(sizeof(*gss_auth), GFP_KERNEL))) 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_dec; 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_auth->client = clnt; 8026a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields err = -EINVAL; 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_auth->mech = gss_mech_get_by_pseudoflavor(flavor); 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!gss_auth->mech) { 8053392c34922130d1dca9ad436c358330daa85e94eJames Morris printk(KERN_WARNING "%s: Pseudoflavor %d not found!\n", 8060dc47877a3de00ceadea0005189656ae8dc52669Harvey Harrison __func__, flavor); 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_free; 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_auth->service = gss_pseudoflavor_to_service(gss_auth->mech, flavor); 810438b6fdebf2a2e8573e7290bc176feb4d4475f43J. Bruce Fields if (gss_auth->service == 0) 811438b6fdebf2a2e8573e7290bc176feb4d4475f43J. Bruce Fields goto err_put_mech; 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth = &gss_auth->rpc_auth; 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_cslack = GSS_CRED_SLACK >> 2; 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_rslack = GSS_VERF_SLACK >> 2; 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_ops = &authgss_ops; 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds auth->au_flavor = flavor; 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds atomic_set(&auth->au_count, 1); 8180285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kref_init(&gss_auth->kref); 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 82034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ /* 82134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * Note: if we created the old pipe first, then someone who 82234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * examined the directory at the right moment might conclude 82334769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * that we supported only the old pipe. So we instead create 82434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ * the new pipe first. 82534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ */ 8267d217caca5d704e48aa5e59aba0b3ad4c7af4fd2Trond Myklebust gss_auth->dentry[1] = rpc_mkpipe(clnt->cl_path.dentry, 82734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ "gssd", 82834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ clnt, &gss_upcall_ops_v1, 82934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ RPC_PIPE_WAIT_FOR_OPEN); 83034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ if (IS_ERR(gss_auth->dentry[1])) { 83134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ err = PTR_ERR(gss_auth->dentry[1]); 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto err_put_mech; 8336a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields } 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8357d217caca5d704e48aa5e59aba0b3ad4c7af4fd2Trond Myklebust gss_auth->dentry[0] = rpc_mkpipe(clnt->cl_path.dentry, 83634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ gss_auth->mech->gm_name, 83734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ clnt, &gss_upcall_ops_v0, 83834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ RPC_PIPE_WAIT_FOR_OPEN); 83934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ if (IS_ERR(gss_auth->dentry[0])) { 84034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ err = PTR_ERR(gss_auth->dentry[0]); 84134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ goto err_unlink_pipe_1; 84234769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ } 843f5c2187cfef628784d8a09b6d0f77888246d0c0fTrond Myklebust err = rpcauth_init_credcache(auth); 84407a2bf1da4765d987ffd1d8045e92ba032e0ad78Trond Myklebust if (err) 84534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ goto err_unlink_pipe_0; 84607a2bf1da4765d987ffd1d8045e92ba032e0ad78Trond Myklebust 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return auth; 84834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\err_unlink_pipe_0: 84934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ rpc_unlink(gss_auth->dentry[0]); 85034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\err_unlink_pipe_1: 85134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ rpc_unlink(gss_auth->dentry[1]); 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr_put_mech: 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_mech_put(gss_auth->mech); 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserr_free: 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(gss_auth); 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_dec: 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds module_put(THIS_MODULE); 8586a19275ada9137435da58990c8f8d3f58e170bf1J. Bruce Fields return ERR_PTR(err); 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 8620285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebustgss_free(struct gss_auth *gss_auth) 8630285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust{ 86434769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ rpc_unlink(gss_auth->dentry[1]); 86534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ rpc_unlink(gss_auth->dentry[0]); 8660285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust gss_mech_put(gss_auth->mech); 8670285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 8680285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kfree(gss_auth); 8690285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust module_put(THIS_MODULE); 8700285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust} 8710285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 8720285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebuststatic void 8730285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebustgss_free_callback(struct kref *kref) 8740285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust{ 8750285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust struct gss_auth *gss_auth = container_of(kref, struct gss_auth, kref); 8760285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 8770285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust gss_free(gss_auth); 8780285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust} 8790285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust 8800285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebuststatic void 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_destroy(struct rpc_auth *auth) 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth *gss_auth; 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8858885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: destroying GSS authenticator %p flavor %d\n", 8868885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever auth, auth->au_flavor); 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8883ab9bb7243489f9db3abf3d05521ddfc6b184c0aTrond Myklebust rpcauth_destroy_credcache(auth); 8893ab9bb7243489f9db3abf3d05521ddfc6b184c0aTrond Myklebust 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_auth = container_of(auth, struct gss_auth, rpc_auth); 8910285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kref_put(&gss_auth->kref, gss_free_callback); 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8940df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust/* 8950df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * gss_destroying_context will cause the RPCSEC_GSS to send a NULL RPC call 8960df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * to the server with the GSS control procedure field set to 8970df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * RPC_GSS_PROC_DESTROY. This should normally cause the server to release 8980df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * all RPCSEC_GSS state associated with that context. 8990df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust */ 9000df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic int 9010df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebustgss_destroying_context(struct rpc_cred *cred) 9020df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust{ 9030df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 9040df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust struct gss_auth *gss_auth = container_of(cred->cr_auth, struct gss_auth, rpc_auth); 9050df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust struct rpc_task *task; 9060df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 9070df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust if (gss_cred->gc_ctx == NULL || 9086dcd3926b214a1fb081df18305921dedae269977Jeff Layton test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) == 0) 9090df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust return 0; 9100df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 9110df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust gss_cred->gc_ctx->gc_proc = RPC_GSS_PROC_DESTROY; 9120df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust cred->cr_ops = &gss_nullops; 9130df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 9140df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust /* Take a reference to ensure the cred will be destroyed either 9150df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust * by the RPC call or by the put_rpccred() below */ 9160df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust get_rpccred(cred); 9170df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 918080a1f148df0615f7a610e4776dd8f3fb706f54fTrond Myklebust task = rpc_call_null(gss_auth->client, cred, RPC_TASK_ASYNC|RPC_TASK_SOFT); 9190df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust if (!IS_ERR(task)) 9200df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust rpc_put_task(task); 9210df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 9220df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust put_rpccred(cred); 9230df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust return 1; 9240df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust} 9250df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 9260df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust/* gss_destroy_cred (and gss_free_ctx) are used to clean up after failure 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to create a new cred or context, so they check that things have been 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * allocated before freeing them. */ 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 9305d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebustgss_do_free_ctx(struct gss_cl_ctx *ctx) 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9325d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust dprintk("RPC: gss_free_ctx\n"); 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9340d8a374673c9bc62bc78a2d8fe64553a51542cb4Trond Myklebust gss_delete_sec_context(&ctx->gc_gss_ctx); 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(ctx->gc_wire_ctx.data); 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(ctx); 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void 9405d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebustgss_free_ctx_callback(struct rcu_head *head) 9415d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust{ 9425d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust struct gss_cl_ctx *ctx = container_of(head, struct gss_cl_ctx, gc_rcu); 9435d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust gss_do_free_ctx(ctx); 9445d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust} 9455d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 9465d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebuststatic void 9475d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebustgss_free_ctx(struct gss_cl_ctx *ctx) 9485d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust{ 9495d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust call_rcu(&ctx->gc_rcu, gss_free_ctx_callback); 9505d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust} 9515d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 9525d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebuststatic void 95331be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebustgss_free_cred(struct gss_cred *gss_cred) 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 95531be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust dprintk("RPC: gss_free_cred %p\n", gss_cred); 95631be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust kfree(gss_cred); 95731be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust} 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 95931be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebuststatic void 96031be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebustgss_free_cred_callback(struct rcu_head *head) 96131be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust{ 96231be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust struct gss_cred *gss_cred = container_of(head, struct gss_cred, gc_base.cr_rcu); 96331be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust gss_free_cred(gss_cred); 96431be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust} 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 96631be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebuststatic void 9676dcd3926b214a1fb081df18305921dedae269977Jeff Laytongss_destroy_nullcred(struct rpc_cred *cred) 96831be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust{ 9695d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust struct gss_cred *gss_cred = container_of(cred, struct gss_cred, gc_base); 9700285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust struct gss_auth *gss_auth = container_of(cred->cr_auth, struct gss_auth, rpc_auth); 9715d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust struct gss_cl_ctx *ctx = gss_cred->gc_ctx; 9725d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust 9735d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust rcu_assign_pointer(gss_cred->gc_ctx, NULL); 97431be5bf15f3dafffce110eb1afadccbf2e3067b4Trond Myklebust call_rcu(&cred->cr_rcu, gss_free_cred_callback); 9755d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust if (ctx) 9765d28dc82074f1e64b22c9424b161abc1f5d6bcdbTrond Myklebust gss_put_ctx(ctx); 9770285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kref_put(&gss_auth->kref, gss_free_callback); 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9806dcd3926b214a1fb081df18305921dedae269977Jeff Laytonstatic void 9816dcd3926b214a1fb081df18305921dedae269977Jeff Laytongss_destroy_cred(struct rpc_cred *cred) 9826dcd3926b214a1fb081df18305921dedae269977Jeff Layton{ 9836dcd3926b214a1fb081df18305921dedae269977Jeff Layton 9846dcd3926b214a1fb081df18305921dedae269977Jeff Layton if (gss_destroying_context(cred)) 9856dcd3926b214a1fb081df18305921dedae269977Jeff Layton return; 9866dcd3926b214a1fb081df18305921dedae269977Jeff Layton gss_destroy_nullcred(cred); 9876dcd3926b214a1fb081df18305921dedae269977Jeff Layton} 9886dcd3926b214a1fb081df18305921dedae269977Jeff Layton 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Lookup RPCSEC_GSS cred for the current process 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct rpc_cred * 9938a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustgss_lookup_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags) 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9958a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebust return rpcauth_lookup_credcache(auth, acred, flags); 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct rpc_cred * 9998a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustgss_create_cred(struct rpc_auth *auth, struct auth_cred *acred, int flags) 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_auth *gss_auth = container_of(auth, struct gss_auth, rpc_auth); 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *cred = NULL; 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = -ENOMEM; 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10058885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_create_cred for uid %d, flavor %d\n", 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds acred->uid, auth->au_flavor); 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10080f38b873aeaae698c3693748438547c8493165fbTrond Myklebust if (!(cred = kzalloc(sizeof(*cred), GFP_NOFS))) 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_err; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10115fe4755e2526a2aa82b7ed8daeb3aed74a236925Trond Myklebust rpcauth_init_cred(&cred->gc_base, acred, auth, &gss_credops); 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: in order to force a call to call_refresh(), we deliberately 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fail to flag the credential as RPCAUTH_CRED_UPTODATE. 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1016fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust cred->gc_base.cr_flags = 1UL << RPCAUTH_CRED_NEW; 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cred->gc_service = gss_auth->service; 10187c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust cred->gc_machine_cred = acred->machine_cred; 10190285ed1f12298e5304f0f2642e2cf31a5f302e61Trond Myklebust kref_get(&gss_auth->kref); 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return &cred->gc_base; 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_err: 10238885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: gss_create_cred failed with error %d\n", err); 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ERR_PTR(err); 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 1028fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebustgss_cred_init(struct rpc_auth *auth, struct rpc_cred *cred) 1029fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust{ 1030fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust struct gss_auth *gss_auth = container_of(auth, struct gss_auth, rpc_auth); 1031fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust struct gss_cred *gss_cred = container_of(cred,struct gss_cred, gc_base); 1032fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust int err; 1033fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust 1034fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust do { 1035fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust err = gss_create_upcall(gss_auth, gss_cred); 1036fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust } while (err == -EAGAIN); 1037fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust return err; 1038fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust} 1039fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust 1040fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebuststatic int 10418a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustgss_match(struct auth_cred *acred, struct rpc_cred *rc, int flags) 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(rc, struct gss_cred, gc_base); 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1045cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (test_bit(RPCAUTH_CRED_NEW, &rc->cr_flags)) 10468a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebust goto out; 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Don't match with creds that have expired. */ 1048cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (time_after(jiffies, gss_cred->gc_ctx->gc_expiry)) 1049cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return 0; 1050cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (!test_bit(RPCAUTH_CRED_UPTODATE, &rc->cr_flags)) 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 10528a3177604b729ec3b80e43790ee978863ac7551bTrond Myklebustout: 10537c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust if (acred->machine_cred != gss_cred->gc_machine_cred) 10547c67db3a8a98045744f06fcd6d8f476d9df0ba5cTrond Myklebust return 0; 1055a02cec2155fbea457eca8881870fd2de1a4c4c76Eric Dumazet return rc->cr_uid == acred->uid; 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Marshal credentials. 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Maybe we should keep a cached credential for performance reasons. 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 1062d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyanstatic __be32 * 1063d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyangss_marshal(struct rpc_task *task, __be32 *p) 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1065a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_rqst *req = task->tk_rqstp; 1066a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = req->rq_cred; 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gc_base); 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 1070d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *cred_len; 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat = 0; 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct kvec iov; 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf verf_buf; 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10768885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_marshal\n", task->tk_pid); 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl(RPC_AUTH_GSS); 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cred_len = p++; 10801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock(&ctx->gc_seq_lock); 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds req->rq_seqno = ctx->gc_seq++; 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock(&ctx->gc_seq_lock); 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) RPC_GSS_VERSION); 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) ctx->gc_proc); 10871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) req->rq_seqno); 10881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl((u32) gss_cred->gc_service); 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = xdr_encode_netobj(p, &ctx->gc_wire_ctx); 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *cred_len = htonl((p - (cred_len + 1)) << 2); 10911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* We compute the checksum for the verifier over the xdr-encoded bytes 10931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * starting with the xid and ending at the end of the credential: */ 1094808012fbb23a52ec59352445d2076d175ad4ab26Chuck Lever iov.iov_base = xprt_skip_transport_header(task->tk_xprt, 1095808012fbb23a52ec59352445d2076d175ad4ab26Chuck Lever req->rq_snd_buf.head[0].iov_base); 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov.iov_len = (u8 *)p - (u8 *)iov.iov_base; 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xdr_buf_from_iov(&iov, &verf_buf); 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* set verifier flavor*/ 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl(RPC_AUTH_GSS); 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.data = (u8 *)(p + 1); 110300fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_get_mic(ctx->gc_gss_ctx, &verf_buf, &mic); 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) { 1105fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 11061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else if (maj_stat != 0) { 11071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("gss_marshal: gss_get_mic FAILED (%d)\n", maj_stat); 11081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_put_ctx; 11091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 11101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = xdr_encode_opaque(p, NULL, mic.len); 11111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 11121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p; 11131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_put_ctx: 11141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 11151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 11161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1118cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebuststatic int gss_renew_cred(struct rpc_task *task) 1119cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust{ 1120a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *oldcred = task->tk_rqstp->rq_cred; 1121cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct gss_cred *gss_cred = container_of(oldcred, 1122cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct gss_cred, 1123cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust gc_base); 1124cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct rpc_auth *auth = oldcred->cr_auth; 1125cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct auth_cred acred = { 1126cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust .uid = oldcred->cr_uid, 1127cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust .machine_cred = gss_cred->gc_machine_cred, 1128cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust }; 1129cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust struct rpc_cred *new; 1130cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust 1131cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust new = gss_lookup_cred(auth, &acred, RPCAUTH_LOOKUP_NEW); 1132cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (IS_ERR(new)) 1133cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return PTR_ERR(new); 1134a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust task->tk_rqstp->rq_cred = new; 1135cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust put_rpccred(oldcred); 1136cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return 0; 1137cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust} 1138cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust 1139126e216a8730532dfb685205309275f87e3d133eTrond Myklebuststatic int gss_cred_is_negative_entry(struct rpc_cred *cred) 1140126e216a8730532dfb685205309275f87e3d133eTrond Myklebust{ 1141126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (test_bit(RPCAUTH_CRED_NEGATIVE, &cred->cr_flags)) { 1142126e216a8730532dfb685205309275f87e3d133eTrond Myklebust unsigned long now = jiffies; 1143126e216a8730532dfb685205309275f87e3d133eTrond Myklebust unsigned long begin, expire; 1144126e216a8730532dfb685205309275f87e3d133eTrond Myklebust struct gss_cred *gss_cred; 1145126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 1146126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_cred = container_of(cred, struct gss_cred, gc_base); 1147126e216a8730532dfb685205309275f87e3d133eTrond Myklebust begin = gss_cred->gc_upcall_timestamp; 1148126e216a8730532dfb685205309275f87e3d133eTrond Myklebust expire = begin + gss_expired_cred_retry_delay * HZ; 1149126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 1150126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (time_in_range_open(now, begin, expire)) 1151126e216a8730532dfb685205309275f87e3d133eTrond Myklebust return 1; 1152126e216a8730532dfb685205309275f87e3d133eTrond Myklebust } 1153126e216a8730532dfb685205309275f87e3d133eTrond Myklebust return 0; 1154126e216a8730532dfb685205309275f87e3d133eTrond Myklebust} 1155126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds* Refresh credentials. XXX - finish 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_refresh(struct rpc_task *task) 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1162a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 1163cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust int ret = 0; 1164cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust 1165126e216a8730532dfb685205309275f87e3d133eTrond Myklebust if (gss_cred_is_negative_entry(cred)) 1166126e216a8730532dfb685205309275f87e3d133eTrond Myklebust return -EKEYEXPIRED; 1167126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 1168cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (!test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags) && 1169cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust !test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags)) { 1170cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust ret = gss_renew_cred(task); 1171cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (ret < 0) 1172cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust goto out; 1173a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust cred = task->tk_rqstp->rq_cred; 1174cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust } 11751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1176cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust if (test_bit(RPCAUTH_CRED_NEW, &cred->cr_flags)) 1177cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust ret = gss_refresh_upcall(task); 1178cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebustout: 1179cd019f7517206a74d8cdb64d5c82b1f76be608ccTrond Myklebust return ret; 11801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11820df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust/* Dummy refresh routine: used only when destroying the context */ 11830df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic int 11840df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebustgss_refresh_null(struct rpc_task *task) 11850df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust{ 11860df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust return -EACCES; 11870df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust} 11880df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 1189d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyanstatic __be32 * 1190d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyangss_validate(struct rpc_task *task, __be32 *p) 11911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1192a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 11931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 1194d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 seq; 11951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct kvec iov; 11961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf verf_buf; 11971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 11981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 flav,len; 11991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat; 12001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12018885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_validate\n", task->tk_pid); 12021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flav = ntohl(*p++); 12041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((len = ntohl(*p++)) > RPC_MAX_AUTH_SIZE) 1205cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki goto out_bad; 12061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (flav != RPC_AUTH_GSS) 12071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_bad; 12081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds seq = htonl(task->tk_rqstp->rq_seqno); 12091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov.iov_base = &seq; 12101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov.iov_len = sizeof(seq); 12111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds xdr_buf_from_iov(&iov, &verf_buf); 12121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.data = (u8 *)p; 12131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.len = len; 12141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 121500fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_verify_mic(ctx->gc_gss_ctx, &verf_buf, &mic); 12161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1217fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 12180df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust if (maj_stat) { 1219014313a9d66272ed37b9ebd64c3f30b596a4c8e1Joe Perches dprintk("RPC: %5u gss_validate: gss_verify_mic returned " 12200df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust "error 0x%08x\n", task->tk_pid, maj_stat); 12211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_bad; 12220df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust } 122324b2605becc10ca63c4c30808fa59a8abbf68727J. Bruce Fields /* We leave it to unwrap to calculate au_rslack. For now we just 122424b2605becc10ca63c4c30808fa59a8abbf68727J. Bruce Fields * calculate the length of the verifier: */ 12251be27f36601973815171db684c711d30557cf50cTrond Myklebust cred->cr_auth->au_verfsize = XDR_QUADLEN(len) + 2; 12261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 12278885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_validate: gss_verify_mic succeeded.\n", 12281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds task->tk_pid); 12291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return p + XDR_QUADLEN(len); 12301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_bad: 12311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 12328885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_validate failed.\n", task->tk_pid); 12331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return NULL; 12341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12369f06c719f474be7003763284a990bed6377bb0d4Chuck Leverstatic void gss_wrap_req_encode(kxdreproc_t encode, struct rpc_rqst *rqstp, 12379f06c719f474be7003763284a990bed6377bb0d4Chuck Lever __be32 *p, void *obj) 12389f06c719f474be7003763284a990bed6377bb0d4Chuck Lever{ 12399f06c719f474be7003763284a990bed6377bb0d4Chuck Lever struct xdr_stream xdr; 12409f06c719f474be7003763284a990bed6377bb0d4Chuck Lever 12419f06c719f474be7003763284a990bed6377bb0d4Chuck Lever xdr_init_encode(&xdr, &rqstp->rq_snd_buf, p); 12429f06c719f474be7003763284a990bed6377bb0d4Chuck Lever encode(rqstp, &xdr, obj); 12439f06c719f474be7003763284a990bed6377bb0d4Chuck Lever} 12449f06c719f474be7003763284a990bed6377bb0d4Chuck Lever 12451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 12461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_wrap_req_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 12479f06c719f474be7003763284a990bed6377bb0d4Chuck Lever kxdreproc_t encode, struct rpc_rqst *rqstp, 12489f06c719f474be7003763284a990bed6377bb0d4Chuck Lever __be32 *p, void *obj) 12491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 12501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 12511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf integ_buf; 1252d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *integ_len = NULL; 12531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 1254d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan u32 offset; 1255d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *q; 12561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct kvec *iov; 12571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat = 0; 12581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 12591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds integ_len = p++; 12611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base; 12621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *p++ = htonl(rqstp->rq_seqno); 12631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12649f06c719f474be7003763284a990bed6377bb0d4Chuck Lever gss_wrap_req_encode(encode, rqstp, p, obj); 12651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xdr_buf_subsegment(snd_buf, &integ_buf, 12671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset, snd_buf->len - offset)) 12681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 12691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *integ_len = htonl(integ_buf.len); 12701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* guess whether we're in the head or the tail: */ 1272cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki if (snd_buf->page_len || snd_buf->tail[0].iov_len) 12731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov = snd_buf->tail; 12741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 12751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov = snd_buf->head; 12761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds p = iov->iov_base + iov->iov_len; 12771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic.data = (u8 *)(p + 1); 12781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 127900fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_get_mic(ctx->gc_gss_ctx, &integ_buf, &mic); 12801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = -EIO; /* XXX? */ 12811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1282fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 12831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (maj_stat) 12841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 12851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds q = xdr_encode_opaque(p, NULL, mic.len); 12861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds offset = (u8 *)q - (u8 *)p; 12881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds iov->iov_len += offset; 12891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds snd_buf->len += offset; 12901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 12911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 12921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 12932d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic void 12942d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldspriv_release_snd_buf(struct rpc_rqst *rqstp) 12952d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 12962d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int i; 12972d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 12982d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields for (i=0; i < rqstp->rq_enc_pages_num; i++) 12992d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields __free_page(rqstp->rq_enc_pages[i]); 13002d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields kfree(rqstp->rq_enc_pages); 13012d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 13022d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13032d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic int 13042d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsalloc_enc_pages(struct rpc_rqst *rqstp) 13052d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 13062d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 13072d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int first, last, i; 13082d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13092d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (snd_buf->page_len == 0) { 13102d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages_num = 0; 13112d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 13122d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields } 13132d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13142d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields first = snd_buf->page_base >> PAGE_CACHE_SHIFT; 13152d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields last = (snd_buf->page_base + snd_buf->page_len - 1) >> PAGE_CACHE_SHIFT; 13162d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages_num = last - first + 1 + 1; 13172d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages 13182d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields = kmalloc(rqstp->rq_enc_pages_num * sizeof(struct page *), 13192d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields GFP_NOFS); 13202d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (!rqstp->rq_enc_pages) 13212d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields goto out; 13222d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields for (i=0; i < rqstp->rq_enc_pages_num; i++) { 13232d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_enc_pages[i] = alloc_page(GFP_NOFS); 13242d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (rqstp->rq_enc_pages[i] == NULL) 13252d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields goto out_free; 13262d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields } 13272d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp->rq_release_snd_buf = priv_release_snd_buf; 13282d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 13292d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsout_free: 1330cdead7cf12896c0e50a8be2e52de52c364603095Trond Myklebust rqstp->rq_enc_pages_num = i; 1331cdead7cf12896c0e50a8be2e52de52c364603095Trond Myklebust priv_release_snd_buf(rqstp); 13322d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsout: 13332d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return -EAGAIN; 13342d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 13352d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13362d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic inline int 13372d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsgss_wrap_req_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 13389f06c719f474be7003763284a990bed6377bb0d4Chuck Lever kxdreproc_t encode, struct rpc_rqst *rqstp, 13399f06c719f474be7003763284a990bed6377bb0d4Chuck Lever __be32 *p, void *obj) 13402d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 13412d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; 13422d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 offset; 13432d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 maj_stat; 13442d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int status; 1345d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *opaque_len; 13462d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct page **inpages; 13472d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int first; 13482d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int pad; 13492d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct kvec *iov; 13502d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields char *tmp; 13512d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13522d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields opaque_len = p++; 13532d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields offset = (u8 *)p - (u8 *)snd_buf->head[0].iov_base; 13542d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields *p++ = htonl(rqstp->rq_seqno); 13552d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13569f06c719f474be7003763284a990bed6377bb0d4Chuck Lever gss_wrap_req_encode(encode, rqstp, p, obj); 13572d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13582d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields status = alloc_enc_pages(rqstp); 13592d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (status) 13602d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 13612d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields first = snd_buf->page_base >> PAGE_CACHE_SHIFT; 13622d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields inpages = snd_buf->pages + first; 13632d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->pages = rqstp->rq_enc_pages; 13642d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->page_base -= first << PAGE_CACHE_SHIFT; 13657561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman /* 13667561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * Give the tail its own page, in case we need extra space in the 13677561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * head when wrapping: 13687561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * 13697561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * call_allocate() allocates twice the slack space required 13707561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * by the authentication flavor to rq_callsize. 13717561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman * For GSS, slack is GSS_CRED_SLACK. 13727561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman */ 13732d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (snd_buf->page_len || snd_buf->tail[0].iov_len) { 13742d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields tmp = page_address(rqstp->rq_enc_pages[rqstp->rq_enc_pages_num - 1]); 13752d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields memcpy(tmp, snd_buf->tail[0].iov_base, snd_buf->tail[0].iov_len); 13762d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->tail[0].iov_base = tmp; 13772d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields } 137800fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_wrap(ctx->gc_gss_ctx, offset, snd_buf, inpages); 13797561042fb7870be0b4ee57efddce68bda8968abfKevin Coffman /* slack space should prevent this ever happening: */ 13802d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields BUG_ON(snd_buf->len > snd_buf->buflen); 1381cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki status = -EIO; 13822d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields /* We're assuming that when GSS_S_CONTEXT_EXPIRED, the encryption was 13832d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields * done anyway, so it's safe to put the request on the wire: */ 13842d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1385fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 13862d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields else if (maj_stat) 13872d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 13882d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 13892d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields *opaque_len = htonl(snd_buf->len - offset); 13902d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields /* guess whether we're in the head or the tail: */ 13912d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (snd_buf->page_len || snd_buf->tail[0].iov_len) 13922d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields iov = snd_buf->tail; 13932d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields else 13942d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields iov = snd_buf->head; 13952d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields p = iov->iov_base + iov->iov_len; 13962d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields pad = 3 - ((snd_buf->len - offset - 1) & 3); 13972d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields memset(p, 0, pad); 13982d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields iov->iov_len += pad; 13992d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields snd_buf->len += pad; 14002d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 14012d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 14022d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 14032d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 14041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 14051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_wrap_req(struct rpc_task *task, 14069f06c719f474be7003763284a990bed6377bb0d4Chuck Lever kxdreproc_t encode, void *rqstp, __be32 *p, void *obj) 14071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1408a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 14091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 14101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gc_base); 14111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 14121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 14131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14148885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_wrap_req\n", task->tk_pid); 14151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx->gc_proc != RPC_GSS_PROC_DATA) { 14161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The spec seems a little ambiguous here, but I think that not 14171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * wrapping context destruction requests makes the most sense. 14181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 14199f06c719f474be7003763284a990bed6377bb0d4Chuck Lever gss_wrap_req_encode(encode, rqstp, p, obj); 14209f06c719f474be7003763284a990bed6377bb0d4Chuck Lever status = 0; 14211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 14221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (gss_cred->gc_service) { 14241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case RPC_GSS_SVC_NONE: 14259f06c719f474be7003763284a990bed6377bb0d4Chuck Lever gss_wrap_req_encode(encode, rqstp, p, obj); 14269f06c719f474be7003763284a990bed6377bb0d4Chuck Lever status = 0; 14271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case RPC_GSS_SVC_INTEGRITY: 14291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = gss_wrap_req_integ(cred, ctx, encode, 14301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rqstp, p, obj); 14311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1432cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki case RPC_GSS_SVC_PRIVACY: 14332d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields status = gss_wrap_req_priv(cred, ctx, encode, 14342d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rqstp, p, obj); 14351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 14361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 14371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 14381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 14398885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_wrap_req returning %d\n", task->tk_pid, status); 14401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 14411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int 14441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_unwrap_resp_integ(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 1445d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan struct rpc_rqst *rqstp, __be32 **p) 14461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 14471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf *rcv_buf = &rqstp->rq_rcv_buf; 14481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_buf integ_buf; 14491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct xdr_netobj mic; 14501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 data_offset, mic_offset; 14511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 integ_len; 14521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u32 maj_stat; 14531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 14541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds integ_len = ntohl(*(*p)++); 14561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (integ_len & 3) 14571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 14581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data_offset = (u8 *)(*p) - (u8 *)rcv_buf->head[0].iov_base; 14591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic_offset = integ_len + data_offset; 14601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (mic_offset > rcv_buf->len) 14611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 14621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ntohl(*(*p)++) != rqstp->rq_seqno) 14631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 14641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xdr_buf_subsegment(rcv_buf, &integ_buf, data_offset, 14661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mic_offset - data_offset)) 14671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 14681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (xdr_buf_read_netobj(rcv_buf, &mic, mic_offset)) 14701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 14711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 147200fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_verify_mic(ctx->gc_gss_ctx, &integ_buf, &mic); 14731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1474fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 14751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (maj_stat != GSS_S_COMPLETE) 14761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 14771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 14781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 14791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 14802d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsstatic inline int 14812d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fieldsgss_unwrap_resp_priv(struct rpc_cred *cred, struct gss_cl_ctx *ctx, 1482d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan struct rpc_rqst *rqstp, __be32 **p) 14832d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields{ 14842d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct xdr_buf *rcv_buf = &rqstp->rq_rcv_buf; 14852d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 offset; 14862d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 opaque_len; 14872d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields u32 maj_stat; 14882d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int status = -EIO; 14892d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 14902d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields opaque_len = ntohl(*(*p)++); 14912d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields offset = (u8 *)(*p) - (u8 *)rcv_buf->head[0].iov_base; 14922d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (offset + opaque_len > rcv_buf->len) 14932d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 14942d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields /* remove padding: */ 14952d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields rcv_buf->len = offset + opaque_len; 14962d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 149700fd6e14255fe7a249315746386d640bc4e9e758J. Bruce Fields maj_stat = gss_unwrap(ctx->gc_gss_ctx, offset, rcv_buf); 14982d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (maj_stat == GSS_S_CONTEXT_EXPIRED) 1499fc432dd90760a629c57026e57f65ff80a1a31d2fTrond Myklebust clear_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags); 15002d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (maj_stat != GSS_S_COMPLETE) 15012d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 15022d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (ntohl(*(*p)++) != rqstp->rq_seqno) 15032d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return status; 15042d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 15052d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields return 0; 15062d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields} 15072d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 1508bf2695516db982e90a22fc94f93491b481796bb1Chuck Leverstatic int 1509bf2695516db982e90a22fc94f93491b481796bb1Chuck Levergss_unwrap_req_decode(kxdrdproc_t decode, struct rpc_rqst *rqstp, 1510bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever __be32 *p, void *obj) 1511bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever{ 1512bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever struct xdr_stream xdr; 1513bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever 1514bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); 1515bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever return decode(rqstp, &xdr, obj); 1516bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever} 15172d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields 15181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int 15191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsgss_unwrap_resp(struct rpc_task *task, 1520bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever kxdrdproc_t decode, void *rqstp, __be32 *p, void *obj) 15211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1522a17c2153d2e271b0cbacae9bed83b0eaa41db7e1Trond Myklebust struct rpc_cred *cred = task->tk_rqstp->rq_cred; 15231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cred *gss_cred = container_of(cred, struct gss_cred, 15241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gc_base); 15251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct gss_cl_ctx *ctx = gss_cred_get_ctx(cred); 1526d8ed029d6000ba2e2908d9286409e4833c091b4cAlexey Dobriyan __be32 *savedp = p; 15272d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields struct kvec *head = ((struct rpc_rqst *)rqstp)->rq_rcv_buf.head; 15282d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields int savedlen = head->iov_len; 15291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status = -EIO; 15301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ctx->gc_proc != RPC_GSS_PROC_DATA) 15321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_decode; 15331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (gss_cred->gc_service) { 15341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case RPC_GSS_SVC_NONE: 15351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case RPC_GSS_SVC_INTEGRITY: 15371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = gss_unwrap_resp_integ(cred, ctx, rqstp, &p); 15381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status) 15391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 15401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1541cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki case RPC_GSS_SVC_PRIVACY: 15422d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields status = gss_unwrap_resp_priv(cred, ctx, rqstp, &p); 15432d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields if (status) 15442d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields goto out; 15451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 15461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 154724b2605becc10ca63c4c30808fa59a8abbf68727J. Bruce Fields /* take into account extra slack for integrity and privacy cases: */ 15481be27f36601973815171db684c711d30557cf50cTrond Myklebust cred->cr_auth->au_rslack = cred->cr_auth->au_verfsize + (p - savedp) 15492d2da60c63b67174add32f06e8d54c3a0c5cd9cfJ. Bruce Fields + (savedlen - head->iov_len); 15501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_decode: 1551bf2695516db982e90a22fc94f93491b481796bb1Chuck Lever status = gss_unwrap_req_decode(decode, rqstp, p, obj); 15521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 15531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_put_ctx(ctx); 15548885cb367f86ce02bed3bf18192d74a53ac3b81fChuck Lever dprintk("RPC: %5u gss_unwrap_resp returning %d\n", task->tk_pid, 15551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status); 15561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return status; 15571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1558cca5172a7ec10dfdb0b787cd8e9d5b0b8f179793YOSHIFUJI Hideaki 1559f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_authops authgss_ops = { 15601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .owner = THIS_MODULE, 15611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .au_flavor = RPC_AUTH_GSS, 15621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .au_name = "RPCSEC_GSS", 15631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .create = gss_create, 15641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .destroy = gss_destroy, 15651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .lookup_cred = gss_lookup_cred, 15661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crcreate = gss_create_cred 15671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 15681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1569f1c0a8615090359d57e096157feb9f900cbb233cTrond Myklebuststatic const struct rpc_credops gss_credops = { 15701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .cr_name = "AUTH_GSS", 15711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crdestroy = gss_destroy_cred, 1572fba3bad488a2eec2d76c067edb7a5ff92ef42431Trond Myklebust .cr_init = gss_cred_init, 15735c691044ecbca04dd558fca4c754121689fe1b34Trond Myklebust .crbind = rpcauth_generic_bind_cred, 15741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crmatch = gss_match, 15751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crmarshal = gss_marshal, 15761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crrefresh = gss_refresh, 15771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crvalidate = gss_validate, 15781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crwrap_req = gss_wrap_req, 15791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .crunwrap_resp = gss_unwrap_resp, 15801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 15811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 15820df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebuststatic const struct rpc_credops gss_nullops = { 15830df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust .cr_name = "AUTH_GSS", 15846dcd3926b214a1fb081df18305921dedae269977Jeff Layton .crdestroy = gss_destroy_nullcred, 15855c691044ecbca04dd558fca4c754121689fe1b34Trond Myklebust .crbind = rpcauth_generic_bind_cred, 15860df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust .crmatch = gss_match, 15870df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust .crmarshal = gss_marshal, 15880df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust .crrefresh = gss_refresh_null, 15890df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust .crvalidate = gss_validate, 15900df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust .crwrap_req = gss_wrap_req, 15910df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust .crunwrap_resp = gss_unwrap_resp, 15920df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust}; 15930df7fb74fbb709591301871a38aac7735a1d6583Trond Myklebust 1594b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v0 = { 159534769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .upcall = gss_pipe_upcall, 159634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .downcall = gss_pipe_downcall, 159734769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .destroy_msg = gss_pipe_destroy_msg, 159834769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .open_pipe = gss_pipe_open_v0, 159934769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .release_pipe = gss_pipe_release, 160034769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\}; 160134769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ 1602b693ba4a338da15db1db4b5ebaa36e4ab9781c82Trond Myklebuststatic const struct rpc_pipe_ops gss_upcall_ops_v1 = { 16031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .upcall = gss_pipe_upcall, 16041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .downcall = gss_pipe_downcall, 16051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .destroy_msg = gss_pipe_destroy_msg, 160634769fc488b463cb753fc632f8f5ba56c918b7cb\"J. Bruce Fields\ .open_pipe = gss_pipe_open_v1, 16071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .release_pipe = gss_pipe_release, 16081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 16091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 16111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Initialize RPCSEC_GSS module 16121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 16131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init init_rpcsec_gss(void) 16141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = 0; 16161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = rpcauth_register(&authgss_ops); 16181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 16191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 16201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = gss_svc_init(); 16211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 16221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out_unregister; 162379a3f20b641f9f93787ada49d1d7cfa98ee5a11e\"J. Bruce Fields\ rpc_init_wait_queue(&pipe_version_rpc_waitqueue, "gss pipe version"); 16241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 16251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout_unregister: 16261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpcauth_unregister(&authgss_ops); 16271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 16281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 16291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit exit_rpcsec_gss(void) 16321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 16331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds gss_svc_shutdown(); 16341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rpcauth_unregister(&authgss_ops); 1635bf12691d846b48fa6e3289810a822687457036cfJesper Dangaard Brouer rcu_barrier(); /* Wait for completion of call_rcu()'s */ 16361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 16371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 1639126e216a8730532dfb685205309275f87e3d133eTrond Myklebustmodule_param_named(expired_cred_retry_delay, 1640126e216a8730532dfb685205309275f87e3d133eTrond Myklebust gss_expired_cred_retry_delay, 1641126e216a8730532dfb685205309275f87e3d133eTrond Myklebust uint, 0644); 1642126e216a8730532dfb685205309275f87e3d133eTrond MyklebustMODULE_PARM_DESC(expired_cred_retry_delay, "Timeout (in seconds) until " 1643126e216a8730532dfb685205309275f87e3d133eTrond Myklebust "the RPC engine retries an expired credential"); 1644126e216a8730532dfb685205309275f87e3d133eTrond Myklebust 16451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(init_rpcsec_gss) 16461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(exit_rpcsec_gss) 1647