Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1 | /* |
| 2 | * GPL HEADER START |
| 3 | * |
| 4 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 only, |
| 8 | * as published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License version 2 for more details (a copy is included |
| 14 | * in the LICENSE file that accompanied this code). |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * version 2 along with this program; If not, see |
| 18 | * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| 19 | * |
| 20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 21 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 22 | * have any questions. |
| 23 | * |
| 24 | * GPL HEADER END |
| 25 | */ |
| 26 | /* |
| 27 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| 28 | * Use is subject to license terms. |
| 29 | * |
| 30 | * Copyright (c) 2011, 2012, Intel Corporation. |
| 31 | */ |
| 32 | /* |
| 33 | * This file is part of Lustre, http://www.lustre.org/ |
| 34 | * Lustre is a trademark of Sun Microsystems, Inc. |
| 35 | * |
| 36 | * lustre/ptlrpc/sec.c |
| 37 | * |
| 38 | * Author: Eric Mei <ericm@clusterfs.com> |
| 39 | */ |
| 40 | |
| 41 | #define DEBUG_SUBSYSTEM S_SEC |
| 42 | |
Greg Kroah-Hartman | 9fdaf8c | 2014-07-11 20:51:16 -0700 | [diff] [blame] | 43 | #include "../../include/linux/libcfs/libcfs.h" |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 44 | #include <linux/crypto.h> |
| 45 | #include <linux/key.h> |
| 46 | |
Greg Kroah-Hartman | e27db14 | 2014-07-11 22:29:36 -0700 | [diff] [blame] | 47 | #include "../include/obd.h" |
| 48 | #include "../include/obd_class.h" |
| 49 | #include "../include/obd_support.h" |
| 50 | #include "../include/lustre_net.h" |
| 51 | #include "../include/lustre_import.h" |
| 52 | #include "../include/lustre_dlm.h" |
| 53 | #include "../include/lustre_sec.h" |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 54 | |
| 55 | #include "ptlrpc_internal.h" |
| 56 | |
| 57 | /*********************************************** |
| 58 | * policy registers * |
| 59 | ***********************************************/ |
| 60 | |
| 61 | static rwlock_t policy_lock; |
| 62 | static struct ptlrpc_sec_policy *policies[SPTLRPC_POLICY_MAX] = { |
| 63 | NULL, |
| 64 | }; |
| 65 | |
| 66 | int sptlrpc_register_policy(struct ptlrpc_sec_policy *policy) |
| 67 | { |
| 68 | __u16 number = policy->sp_policy; |
| 69 | |
| 70 | LASSERT(policy->sp_name); |
| 71 | LASSERT(policy->sp_cops); |
| 72 | LASSERT(policy->sp_sops); |
| 73 | |
| 74 | if (number >= SPTLRPC_POLICY_MAX) |
| 75 | return -EINVAL; |
| 76 | |
| 77 | write_lock(&policy_lock); |
| 78 | if (unlikely(policies[number])) { |
| 79 | write_unlock(&policy_lock); |
| 80 | return -EALREADY; |
| 81 | } |
| 82 | policies[number] = policy; |
| 83 | write_unlock(&policy_lock); |
| 84 | |
| 85 | CDEBUG(D_SEC, "%s: registered\n", policy->sp_name); |
| 86 | return 0; |
| 87 | } |
| 88 | EXPORT_SYMBOL(sptlrpc_register_policy); |
| 89 | |
| 90 | int sptlrpc_unregister_policy(struct ptlrpc_sec_policy *policy) |
| 91 | { |
| 92 | __u16 number = policy->sp_policy; |
| 93 | |
| 94 | LASSERT(number < SPTLRPC_POLICY_MAX); |
| 95 | |
| 96 | write_lock(&policy_lock); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 97 | if (unlikely(!policies[number])) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 98 | write_unlock(&policy_lock); |
| 99 | CERROR("%s: already unregistered\n", policy->sp_name); |
| 100 | return -EINVAL; |
| 101 | } |
| 102 | |
| 103 | LASSERT(policies[number] == policy); |
| 104 | policies[number] = NULL; |
| 105 | write_unlock(&policy_lock); |
| 106 | |
| 107 | CDEBUG(D_SEC, "%s: unregistered\n", policy->sp_name); |
| 108 | return 0; |
| 109 | } |
| 110 | EXPORT_SYMBOL(sptlrpc_unregister_policy); |
| 111 | |
| 112 | static |
Greg Donald | aff9d8e | 2014-08-21 11:07:42 -0500 | [diff] [blame] | 113 | struct ptlrpc_sec_policy *sptlrpc_wireflavor2policy(__u32 flavor) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 114 | { |
| 115 | static DEFINE_MUTEX(load_mutex); |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 116 | static atomic_t loaded = ATOMIC_INIT(0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 117 | struct ptlrpc_sec_policy *policy; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 118 | __u16 number = SPTLRPC_FLVR_POLICY(flavor); |
| 119 | __u16 flag = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 120 | |
| 121 | if (number >= SPTLRPC_POLICY_MAX) |
| 122 | return NULL; |
| 123 | |
| 124 | while (1) { |
| 125 | read_lock(&policy_lock); |
| 126 | policy = policies[number]; |
| 127 | if (policy && !try_module_get(policy->sp_owner)) |
| 128 | policy = NULL; |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 129 | if (!policy) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 130 | flag = atomic_read(&loaded); |
| 131 | read_unlock(&policy_lock); |
| 132 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 133 | if (policy || flag != 0 || |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 134 | number != SPTLRPC_POLICY_GSS) |
| 135 | break; |
| 136 | |
| 137 | /* try to load gss module, once */ |
| 138 | mutex_lock(&load_mutex); |
| 139 | if (atomic_read(&loaded) == 0) { |
| 140 | if (request_module("ptlrpc_gss") == 0) |
| 141 | CDEBUG(D_SEC, |
| 142 | "module ptlrpc_gss loaded on demand\n"); |
| 143 | else |
| 144 | CERROR("Unable to load module ptlrpc_gss\n"); |
| 145 | |
| 146 | atomic_set(&loaded, 1); |
| 147 | } |
| 148 | mutex_unlock(&load_mutex); |
| 149 | } |
| 150 | |
| 151 | return policy; |
| 152 | } |
| 153 | |
| 154 | __u32 sptlrpc_name2flavor_base(const char *name) |
| 155 | { |
| 156 | if (!strcmp(name, "null")) |
| 157 | return SPTLRPC_FLVR_NULL; |
| 158 | if (!strcmp(name, "plain")) |
| 159 | return SPTLRPC_FLVR_PLAIN; |
| 160 | if (!strcmp(name, "krb5n")) |
| 161 | return SPTLRPC_FLVR_KRB5N; |
| 162 | if (!strcmp(name, "krb5a")) |
| 163 | return SPTLRPC_FLVR_KRB5A; |
| 164 | if (!strcmp(name, "krb5i")) |
| 165 | return SPTLRPC_FLVR_KRB5I; |
| 166 | if (!strcmp(name, "krb5p")) |
| 167 | return SPTLRPC_FLVR_KRB5P; |
| 168 | |
| 169 | return SPTLRPC_FLVR_INVALID; |
| 170 | } |
| 171 | EXPORT_SYMBOL(sptlrpc_name2flavor_base); |
| 172 | |
| 173 | const char *sptlrpc_flavor2name_base(__u32 flvr) |
| 174 | { |
| 175 | __u32 base = SPTLRPC_FLVR_BASE(flvr); |
| 176 | |
| 177 | if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL)) |
| 178 | return "null"; |
| 179 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_PLAIN)) |
| 180 | return "plain"; |
| 181 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5N)) |
| 182 | return "krb5n"; |
| 183 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5A)) |
| 184 | return "krb5a"; |
| 185 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5I)) |
| 186 | return "krb5i"; |
| 187 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5P)) |
| 188 | return "krb5p"; |
| 189 | |
| 190 | CERROR("invalid wire flavor 0x%x\n", flvr); |
| 191 | return "invalid"; |
| 192 | } |
| 193 | EXPORT_SYMBOL(sptlrpc_flavor2name_base); |
| 194 | |
| 195 | char *sptlrpc_flavor2name_bulk(struct sptlrpc_flavor *sf, |
| 196 | char *buf, int bufsize) |
| 197 | { |
| 198 | if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN) |
| 199 | snprintf(buf, bufsize, "hash:%s", |
| 200 | sptlrpc_get_hash_name(sf->u_bulk.hash.hash_alg)); |
| 201 | else |
| 202 | snprintf(buf, bufsize, "%s", |
| 203 | sptlrpc_flavor2name_base(sf->sf_rpc)); |
| 204 | |
| 205 | buf[bufsize - 1] = '\0'; |
| 206 | return buf; |
| 207 | } |
| 208 | EXPORT_SYMBOL(sptlrpc_flavor2name_bulk); |
| 209 | |
| 210 | char *sptlrpc_flavor2name(struct sptlrpc_flavor *sf, char *buf, int bufsize) |
| 211 | { |
Rickard Strandqvist | 22e1dd6 | 2014-10-12 17:55:33 +0200 | [diff] [blame] | 212 | strlcpy(buf, sptlrpc_flavor2name_base(sf->sf_rpc), bufsize); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 213 | |
| 214 | /* |
| 215 | * currently we don't support customized bulk specification for |
| 216 | * flavors other than plain |
| 217 | */ |
| 218 | if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN) { |
| 219 | char bspec[16]; |
| 220 | |
| 221 | bspec[0] = '-'; |
| 222 | sptlrpc_flavor2name_bulk(sf, &bspec[1], sizeof(bspec) - 1); |
Rickard Strandqvist | 22e1dd6 | 2014-10-12 17:55:33 +0200 | [diff] [blame] | 223 | strlcat(buf, bspec, bufsize); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 224 | } |
| 225 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 226 | return buf; |
| 227 | } |
| 228 | EXPORT_SYMBOL(sptlrpc_flavor2name); |
| 229 | |
Shraddha Barke | be23ce1 | 2015-10-05 05:32:39 +0530 | [diff] [blame] | 230 | static char *sptlrpc_secflags2str(__u32 flags, char *buf, int bufsize) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 231 | { |
| 232 | buf[0] = '\0'; |
| 233 | |
| 234 | if (flags & PTLRPC_SEC_FL_REVERSE) |
| 235 | strlcat(buf, "reverse,", bufsize); |
| 236 | if (flags & PTLRPC_SEC_FL_ROOTONLY) |
| 237 | strlcat(buf, "rootonly,", bufsize); |
| 238 | if (flags & PTLRPC_SEC_FL_UDESC) |
| 239 | strlcat(buf, "udesc,", bufsize); |
| 240 | if (flags & PTLRPC_SEC_FL_BULK) |
| 241 | strlcat(buf, "bulk,", bufsize); |
| 242 | if (buf[0] == '\0') |
| 243 | strlcat(buf, "-,", bufsize); |
| 244 | |
| 245 | return buf; |
| 246 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 247 | |
| 248 | /************************************************** |
| 249 | * client context APIs * |
| 250 | **************************************************/ |
| 251 | |
| 252 | static |
| 253 | struct ptlrpc_cli_ctx *get_my_ctx(struct ptlrpc_sec *sec) |
| 254 | { |
| 255 | struct vfs_cred vcred; |
| 256 | int create = 1, remove_dead = 1; |
| 257 | |
| 258 | LASSERT(sec); |
| 259 | LASSERT(sec->ps_policy->sp_cops->lookup_ctx); |
| 260 | |
| 261 | if (sec->ps_flvr.sf_flags & (PTLRPC_SEC_FL_REVERSE | |
| 262 | PTLRPC_SEC_FL_ROOTONLY)) { |
| 263 | vcred.vc_uid = 0; |
| 264 | vcred.vc_gid = 0; |
| 265 | if (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_REVERSE) { |
| 266 | create = 0; |
| 267 | remove_dead = 0; |
| 268 | } |
| 269 | } else { |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 270 | vcred.vc_uid = from_kuid(&init_user_ns, current_uid()); |
| 271 | vcred.vc_gid = from_kgid(&init_user_ns, current_gid()); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | return sec->ps_policy->sp_cops->lookup_ctx(sec, &vcred, |
| 275 | create, remove_dead); |
| 276 | } |
| 277 | |
| 278 | struct ptlrpc_cli_ctx *sptlrpc_cli_ctx_get(struct ptlrpc_cli_ctx *ctx) |
| 279 | { |
| 280 | atomic_inc(&ctx->cc_refcount); |
| 281 | return ctx; |
| 282 | } |
| 283 | EXPORT_SYMBOL(sptlrpc_cli_ctx_get); |
| 284 | |
| 285 | void sptlrpc_cli_ctx_put(struct ptlrpc_cli_ctx *ctx, int sync) |
| 286 | { |
| 287 | struct ptlrpc_sec *sec = ctx->cc_sec; |
| 288 | |
| 289 | LASSERT(sec); |
| 290 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 291 | |
| 292 | if (!atomic_dec_and_test(&ctx->cc_refcount)) |
| 293 | return; |
| 294 | |
| 295 | sec->ps_policy->sp_cops->release_ctx(sec, ctx, sync); |
| 296 | } |
| 297 | EXPORT_SYMBOL(sptlrpc_cli_ctx_put); |
| 298 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 299 | static int import_sec_check_expire(struct obd_import *imp) |
| 300 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 301 | int adapt = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 302 | |
| 303 | spin_lock(&imp->imp_lock); |
| 304 | if (imp->imp_sec_expire && |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 305 | imp->imp_sec_expire < ktime_get_real_seconds()) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 306 | adapt = 1; |
| 307 | imp->imp_sec_expire = 0; |
| 308 | } |
| 309 | spin_unlock(&imp->imp_lock); |
| 310 | |
| 311 | if (!adapt) |
| 312 | return 0; |
| 313 | |
| 314 | CDEBUG(D_SEC, "found delayed sec adapt expired, do it now\n"); |
Denis Pithon | 81fb955 | 2014-04-14 18:25:30 +0200 | [diff] [blame] | 315 | return sptlrpc_import_sec_adapt(imp, NULL, NULL); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | static int import_sec_validate_get(struct obd_import *imp, |
| 319 | struct ptlrpc_sec **sec) |
| 320 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 321 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 322 | |
| 323 | if (unlikely(imp->imp_sec_expire)) { |
| 324 | rc = import_sec_check_expire(imp); |
| 325 | if (rc) |
| 326 | return rc; |
| 327 | } |
| 328 | |
| 329 | *sec = sptlrpc_import_sec_ref(imp); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 330 | if (!*sec) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 331 | CERROR("import %p (%s) with no sec\n", |
| 332 | imp, ptlrpc_import_state_name(imp->imp_state)); |
| 333 | return -EACCES; |
| 334 | } |
| 335 | |
| 336 | if (unlikely((*sec)->ps_dying)) { |
| 337 | CERROR("attempt to use dying sec %p\n", sec); |
| 338 | sptlrpc_sec_put(*sec); |
| 339 | return -EACCES; |
| 340 | } |
| 341 | |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Given a \a req, find or allocate a appropriate context for it. |
| 347 | * \pre req->rq_cli_ctx == NULL. |
| 348 | * |
| 349 | * \retval 0 succeed, and req->rq_cli_ctx is set. |
| 350 | * \retval -ev error number, and req->rq_cli_ctx == NULL. |
| 351 | */ |
| 352 | int sptlrpc_req_get_ctx(struct ptlrpc_request *req) |
| 353 | { |
| 354 | struct obd_import *imp = req->rq_import; |
| 355 | struct ptlrpc_sec *sec; |
| 356 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 357 | |
| 358 | LASSERT(!req->rq_cli_ctx); |
| 359 | LASSERT(imp); |
| 360 | |
| 361 | rc = import_sec_validate_get(imp, &sec); |
| 362 | if (rc) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 363 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 364 | |
| 365 | req->rq_cli_ctx = get_my_ctx(sec); |
| 366 | |
| 367 | sptlrpc_sec_put(sec); |
| 368 | |
| 369 | if (!req->rq_cli_ctx) { |
| 370 | CERROR("req %p: fail to get context\n", req); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 371 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 372 | } |
| 373 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 374 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Drop the context for \a req. |
| 379 | * \pre req->rq_cli_ctx != NULL. |
| 380 | * \post req->rq_cli_ctx == NULL. |
| 381 | * |
| 382 | * If \a sync == 0, this function should return quickly without sleep; |
| 383 | * otherwise it might trigger and wait for the whole process of sending |
| 384 | * an context-destroying rpc to server. |
| 385 | */ |
| 386 | void sptlrpc_req_put_ctx(struct ptlrpc_request *req, int sync) |
| 387 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 388 | LASSERT(req); |
| 389 | LASSERT(req->rq_cli_ctx); |
| 390 | |
| 391 | /* request might be asked to release earlier while still |
| 392 | * in the context waiting list. |
| 393 | */ |
| 394 | if (!list_empty(&req->rq_ctx_chain)) { |
| 395 | spin_lock(&req->rq_cli_ctx->cc_lock); |
| 396 | list_del_init(&req->rq_ctx_chain); |
| 397 | spin_unlock(&req->rq_cli_ctx->cc_lock); |
| 398 | } |
| 399 | |
| 400 | sptlrpc_cli_ctx_put(req->rq_cli_ctx, sync); |
| 401 | req->rq_cli_ctx = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | static |
| 405 | int sptlrpc_req_ctx_switch(struct ptlrpc_request *req, |
| 406 | struct ptlrpc_cli_ctx *oldctx, |
| 407 | struct ptlrpc_cli_ctx *newctx) |
| 408 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 409 | struct sptlrpc_flavor old_flvr; |
| 410 | char *reqmsg = NULL; /* to workaround old gcc */ |
| 411 | int reqmsg_size; |
| 412 | int rc = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 413 | |
| 414 | LASSERT(req->rq_reqmsg); |
| 415 | LASSERT(req->rq_reqlen); |
| 416 | LASSERT(req->rq_replen); |
| 417 | |
Joe Perches | 2d00bd1 | 2014-11-23 11:28:50 -0800 | [diff] [blame] | 418 | CDEBUG(D_SEC, "req %p: switch ctx %p(%u->%s) -> %p(%u->%s), switch sec %p(%s) -> %p(%s)\n", |
| 419 | req, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 420 | oldctx, oldctx->cc_vcred.vc_uid, sec2target_str(oldctx->cc_sec), |
| 421 | newctx, newctx->cc_vcred.vc_uid, sec2target_str(newctx->cc_sec), |
| 422 | oldctx->cc_sec, oldctx->cc_sec->ps_policy->sp_name, |
| 423 | newctx->cc_sec, newctx->cc_sec->ps_policy->sp_name); |
| 424 | |
| 425 | /* save flavor */ |
| 426 | old_flvr = req->rq_flvr; |
| 427 | |
| 428 | /* save request message */ |
| 429 | reqmsg_size = req->rq_reqlen; |
| 430 | if (reqmsg_size != 0) { |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 431 | reqmsg = libcfs_kvzalloc(reqmsg_size, GFP_NOFS); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 432 | if (!reqmsg) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 433 | return -ENOMEM; |
| 434 | memcpy(reqmsg, req->rq_reqmsg, reqmsg_size); |
| 435 | } |
| 436 | |
| 437 | /* release old req/rep buf */ |
| 438 | req->rq_cli_ctx = oldctx; |
| 439 | sptlrpc_cli_free_reqbuf(req); |
| 440 | sptlrpc_cli_free_repbuf(req); |
| 441 | req->rq_cli_ctx = newctx; |
| 442 | |
| 443 | /* recalculate the flavor */ |
| 444 | sptlrpc_req_set_flavor(req, 0); |
| 445 | |
| 446 | /* alloc new request buffer |
| 447 | * we don't need to alloc reply buffer here, leave it to the |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 448 | * rest procedure of ptlrpc |
| 449 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 450 | if (reqmsg_size != 0) { |
| 451 | rc = sptlrpc_cli_alloc_reqbuf(req, reqmsg_size); |
| 452 | if (!rc) { |
| 453 | LASSERT(req->rq_reqmsg); |
| 454 | memcpy(req->rq_reqmsg, reqmsg, reqmsg_size); |
| 455 | } else { |
| 456 | CWARN("failed to alloc reqbuf: %d\n", rc); |
| 457 | req->rq_flvr = old_flvr; |
| 458 | } |
| 459 | |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 460 | kvfree(reqmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 461 | } |
| 462 | return rc; |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * If current context of \a req is dead somehow, e.g. we just switched flavor |
| 467 | * thus marked original contexts dead, we'll find a new context for it. if |
| 468 | * no switch is needed, \a req will end up with the same context. |
| 469 | * |
| 470 | * \note a request must have a context, to keep other parts of code happy. |
| 471 | * In any case of failure during the switching, we must restore the old one. |
| 472 | */ |
Shraddha Barke | cf0a7f9 | 2015-10-02 16:19:30 +0530 | [diff] [blame] | 473 | static int sptlrpc_req_replace_dead_ctx(struct ptlrpc_request *req) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 474 | { |
| 475 | struct ptlrpc_cli_ctx *oldctx = req->rq_cli_ctx; |
| 476 | struct ptlrpc_cli_ctx *newctx; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 477 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 478 | |
| 479 | LASSERT(oldctx); |
| 480 | |
| 481 | sptlrpc_cli_ctx_get(oldctx); |
| 482 | sptlrpc_req_put_ctx(req, 0); |
| 483 | |
| 484 | rc = sptlrpc_req_get_ctx(req); |
| 485 | if (unlikely(rc)) { |
| 486 | LASSERT(!req->rq_cli_ctx); |
| 487 | |
| 488 | /* restore old ctx */ |
| 489 | req->rq_cli_ctx = oldctx; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 490 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 491 | } |
| 492 | |
| 493 | newctx = req->rq_cli_ctx; |
| 494 | LASSERT(newctx); |
| 495 | |
| 496 | if (unlikely(newctx == oldctx && |
| 497 | test_bit(PTLRPC_CTX_DEAD_BIT, &oldctx->cc_flags))) { |
| 498 | /* |
| 499 | * still get the old dead ctx, usually means system too busy |
| 500 | */ |
| 501 | CDEBUG(D_SEC, |
| 502 | "ctx (%p, fl %lx) doesn't switch, relax a little bit\n", |
| 503 | newctx, newctx->cc_flags); |
| 504 | |
Peng Tao | 18fd5ba | 2014-03-18 21:05:55 +0800 | [diff] [blame] | 505 | set_current_state(TASK_INTERRUPTIBLE); |
| 506 | schedule_timeout(HZ); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 507 | } else { |
| 508 | /* |
| 509 | * it's possible newctx == oldctx if we're switching |
| 510 | * subflavor with the same sec. |
| 511 | */ |
| 512 | rc = sptlrpc_req_ctx_switch(req, oldctx, newctx); |
| 513 | if (rc) { |
| 514 | /* restore old ctx */ |
| 515 | sptlrpc_req_put_ctx(req, 0); |
| 516 | req->rq_cli_ctx = oldctx; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 517 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | LASSERT(req->rq_cli_ctx == newctx); |
| 521 | } |
| 522 | |
| 523 | sptlrpc_cli_ctx_put(oldctx, 1); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 524 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 525 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 526 | |
| 527 | static |
| 528 | int ctx_check_refresh(struct ptlrpc_cli_ctx *ctx) |
| 529 | { |
| 530 | if (cli_ctx_is_refreshed(ctx)) |
| 531 | return 1; |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | static |
| 536 | int ctx_refresh_timeout(void *data) |
| 537 | { |
| 538 | struct ptlrpc_request *req = data; |
| 539 | int rc; |
| 540 | |
| 541 | /* conn_cnt is needed in expire_one_request */ |
| 542 | lustre_msg_set_conn_cnt(req->rq_reqmsg, req->rq_import->imp_conn_cnt); |
| 543 | |
| 544 | rc = ptlrpc_expire_one_request(req, 1); |
| 545 | /* if we started recovery, we should mark this ctx dead; otherwise |
| 546 | * in case of lgssd died nobody would retire this ctx, following |
| 547 | * connecting will still find the same ctx thus cause deadlock. |
| 548 | * there's an assumption that expire time of the request should be |
| 549 | * later than the context refresh expire time. |
| 550 | */ |
| 551 | if (rc == 0) |
Chen Gang | d0f17b6 | 2014-07-14 19:59:13 +0800 | [diff] [blame] | 552 | req->rq_cli_ctx->cc_ops->force_die(req->rq_cli_ctx, 0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 553 | return rc; |
| 554 | } |
| 555 | |
| 556 | static |
| 557 | void ctx_refresh_interrupt(void *data) |
| 558 | { |
| 559 | struct ptlrpc_request *req = data; |
| 560 | |
| 561 | spin_lock(&req->rq_lock); |
| 562 | req->rq_intr = 1; |
| 563 | spin_unlock(&req->rq_lock); |
| 564 | } |
| 565 | |
| 566 | static |
| 567 | void req_off_ctx_list(struct ptlrpc_request *req, struct ptlrpc_cli_ctx *ctx) |
| 568 | { |
| 569 | spin_lock(&ctx->cc_lock); |
| 570 | if (!list_empty(&req->rq_ctx_chain)) |
| 571 | list_del_init(&req->rq_ctx_chain); |
| 572 | spin_unlock(&ctx->cc_lock); |
| 573 | } |
| 574 | |
| 575 | /** |
| 576 | * To refresh the context of \req, if it's not up-to-date. |
| 577 | * \param timeout |
| 578 | * - < 0: don't wait |
| 579 | * - = 0: wait until success or fatal error occur |
| 580 | * - > 0: timeout value (in seconds) |
| 581 | * |
| 582 | * The status of the context could be subject to be changed by other threads |
| 583 | * at any time. We allow this race, but once we return with 0, the caller will |
| 584 | * suppose it's uptodated and keep using it until the owning rpc is done. |
| 585 | * |
| 586 | * \retval 0 only if the context is uptodated. |
| 587 | * \retval -ev error number. |
| 588 | */ |
| 589 | int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout) |
| 590 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 591 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 592 | struct ptlrpc_sec *sec; |
| 593 | struct l_wait_info lwi; |
| 594 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 595 | |
| 596 | LASSERT(ctx); |
| 597 | |
| 598 | if (req->rq_ctx_init || req->rq_ctx_fini) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 599 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 600 | |
| 601 | /* |
| 602 | * during the process a request's context might change type even |
| 603 | * (e.g. from gss ctx to null ctx), so each loop we need to re-check |
| 604 | * everything |
| 605 | */ |
| 606 | again: |
| 607 | rc = import_sec_validate_get(req->rq_import, &sec); |
| 608 | if (rc) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 609 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 610 | |
| 611 | if (sec->ps_flvr.sf_rpc != req->rq_flvr.sf_rpc) { |
| 612 | CDEBUG(D_SEC, "req %p: flavor has changed %x -> %x\n", |
Oleg Drokin | 30c0aa3 | 2016-02-26 01:50:02 -0500 | [diff] [blame] | 613 | req, req->rq_flvr.sf_rpc, sec->ps_flvr.sf_rpc); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 614 | req_off_ctx_list(req, ctx); |
| 615 | sptlrpc_req_replace_dead_ctx(req); |
| 616 | ctx = req->rq_cli_ctx; |
| 617 | } |
| 618 | sptlrpc_sec_put(sec); |
| 619 | |
| 620 | if (cli_ctx_is_eternal(ctx)) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 621 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 622 | |
| 623 | if (unlikely(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags))) { |
| 624 | LASSERT(ctx->cc_ops->refresh); |
| 625 | ctx->cc_ops->refresh(ctx); |
| 626 | } |
| 627 | LASSERT(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags) == 0); |
| 628 | |
| 629 | LASSERT(ctx->cc_ops->validate); |
| 630 | if (ctx->cc_ops->validate(ctx) == 0) { |
| 631 | req_off_ctx_list(req, ctx); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 632 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 633 | } |
| 634 | |
| 635 | if (unlikely(test_bit(PTLRPC_CTX_ERROR_BIT, &ctx->cc_flags))) { |
| 636 | spin_lock(&req->rq_lock); |
| 637 | req->rq_err = 1; |
| 638 | spin_unlock(&req->rq_lock); |
| 639 | req_off_ctx_list(req, ctx); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 640 | return -EPERM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 641 | } |
| 642 | |
| 643 | /* |
| 644 | * There's a subtle issue for resending RPCs, suppose following |
| 645 | * situation: |
| 646 | * 1. the request was sent to server. |
| 647 | * 2. recovery was kicked start, after finished the request was |
| 648 | * marked as resent. |
| 649 | * 3. resend the request. |
| 650 | * 4. old reply from server received, we accept and verify the reply. |
| 651 | * this has to be success, otherwise the error will be aware |
| 652 | * by application. |
| 653 | * 5. new reply from server received, dropped by LNet. |
| 654 | * |
| 655 | * Note the xid of old & new request is the same. We can't simply |
| 656 | * change xid for the resent request because the server replies on |
| 657 | * it for reply reconstruction. |
| 658 | * |
| 659 | * Commonly the original context should be uptodate because we |
| 660 | * have a expiry nice time; server will keep its context because |
| 661 | * we at least hold a ref of old context which prevent context |
| 662 | * destroying RPC being sent. So server still can accept the request |
| 663 | * and finish the RPC. But if that's not the case: |
| 664 | * 1. If server side context has been trimmed, a NO_CONTEXT will |
| 665 | * be returned, gss_cli_ctx_verify/unseal will switch to new |
| 666 | * context by force. |
| 667 | * 2. Current context never be refreshed, then we are fine: we |
| 668 | * never really send request with old context before. |
| 669 | */ |
| 670 | if (test_bit(PTLRPC_CTX_UPTODATE_BIT, &ctx->cc_flags) && |
| 671 | unlikely(req->rq_reqmsg) && |
| 672 | lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { |
| 673 | req_off_ctx_list(req, ctx); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 674 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 675 | } |
| 676 | |
| 677 | if (unlikely(test_bit(PTLRPC_CTX_DEAD_BIT, &ctx->cc_flags))) { |
| 678 | req_off_ctx_list(req, ctx); |
| 679 | /* |
| 680 | * don't switch ctx if import was deactivated |
| 681 | */ |
| 682 | if (req->rq_import->imp_deactive) { |
| 683 | spin_lock(&req->rq_lock); |
| 684 | req->rq_err = 1; |
| 685 | spin_unlock(&req->rq_lock); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 686 | return -EINTR; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 687 | } |
| 688 | |
| 689 | rc = sptlrpc_req_replace_dead_ctx(req); |
| 690 | if (rc) { |
| 691 | LASSERT(ctx == req->rq_cli_ctx); |
| 692 | CERROR("req %p: failed to replace dead ctx %p: %d\n", |
| 693 | req, ctx, rc); |
| 694 | spin_lock(&req->rq_lock); |
| 695 | req->rq_err = 1; |
| 696 | spin_unlock(&req->rq_lock); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 697 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | ctx = req->rq_cli_ctx; |
| 701 | goto again; |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * Now we're sure this context is during upcall, add myself into |
| 706 | * waiting list |
| 707 | */ |
| 708 | spin_lock(&ctx->cc_lock); |
| 709 | if (list_empty(&req->rq_ctx_chain)) |
| 710 | list_add(&req->rq_ctx_chain, &ctx->cc_req_list); |
| 711 | spin_unlock(&ctx->cc_lock); |
| 712 | |
| 713 | if (timeout < 0) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 714 | return -EWOULDBLOCK; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 715 | |
| 716 | /* Clear any flags that may be present from previous sends */ |
| 717 | LASSERT(req->rq_receiving_reply == 0); |
| 718 | spin_lock(&req->rq_lock); |
| 719 | req->rq_err = 0; |
| 720 | req->rq_timedout = 0; |
| 721 | req->rq_resend = 0; |
| 722 | req->rq_restart = 0; |
| 723 | spin_unlock(&req->rq_lock); |
| 724 | |
| 725 | lwi = LWI_TIMEOUT_INTR(timeout * HZ, ctx_refresh_timeout, |
| 726 | ctx_refresh_interrupt, req); |
| 727 | rc = l_wait_event(req->rq_reply_waitq, ctx_check_refresh(ctx), &lwi); |
| 728 | |
| 729 | /* |
| 730 | * following cases could lead us here: |
| 731 | * - successfully refreshed; |
| 732 | * - interrupted; |
| 733 | * - timedout, and we don't want recover from the failure; |
| 734 | * - timedout, and waked up upon recovery finished; |
| 735 | * - someone else mark this ctx dead by force; |
| 736 | * - someone invalidate the req and call ptlrpc_client_wake_req(), |
| 737 | * e.g. ptlrpc_abort_inflight(); |
| 738 | */ |
| 739 | if (!cli_ctx_is_refreshed(ctx)) { |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 740 | /* timed out or interrupted */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 741 | req_off_ctx_list(req, ctx); |
| 742 | |
| 743 | LASSERT(rc != 0); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 744 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 745 | } |
| 746 | |
| 747 | goto again; |
| 748 | } |
| 749 | |
| 750 | /** |
| 751 | * Initialize flavor settings for \a req, according to \a opcode. |
| 752 | * |
| 753 | * \note this could be called in two situations: |
| 754 | * - new request from ptlrpc_pre_req(), with proper @opcode |
| 755 | * - old request which changed ctx in the middle, with @opcode == 0 |
| 756 | */ |
| 757 | void sptlrpc_req_set_flavor(struct ptlrpc_request *req, int opcode) |
| 758 | { |
| 759 | struct ptlrpc_sec *sec; |
| 760 | |
| 761 | LASSERT(req->rq_import); |
| 762 | LASSERT(req->rq_cli_ctx); |
| 763 | LASSERT(req->rq_cli_ctx->cc_sec); |
| 764 | LASSERT(req->rq_bulk_read == 0 || req->rq_bulk_write == 0); |
| 765 | |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 766 | /* special security flags according to opcode */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 767 | switch (opcode) { |
| 768 | case OST_READ: |
| 769 | case MDS_READPAGE: |
| 770 | case MGS_CONFIG_READ: |
| 771 | case OBD_IDX_READ: |
| 772 | req->rq_bulk_read = 1; |
| 773 | break; |
| 774 | case OST_WRITE: |
| 775 | case MDS_WRITEPAGE: |
| 776 | req->rq_bulk_write = 1; |
| 777 | break; |
| 778 | case SEC_CTX_INIT: |
| 779 | req->rq_ctx_init = 1; |
| 780 | break; |
| 781 | case SEC_CTX_FINI: |
| 782 | req->rq_ctx_fini = 1; |
| 783 | break; |
| 784 | case 0: |
| 785 | /* init/fini rpc won't be resend, so can't be here */ |
| 786 | LASSERT(req->rq_ctx_init == 0); |
| 787 | LASSERT(req->rq_ctx_fini == 0); |
| 788 | |
| 789 | /* cleanup flags, which should be recalculated */ |
| 790 | req->rq_pack_udesc = 0; |
| 791 | req->rq_pack_bulk = 0; |
| 792 | break; |
| 793 | } |
| 794 | |
| 795 | sec = req->rq_cli_ctx->cc_sec; |
| 796 | |
| 797 | spin_lock(&sec->ps_lock); |
| 798 | req->rq_flvr = sec->ps_flvr; |
| 799 | spin_unlock(&sec->ps_lock); |
| 800 | |
| 801 | /* force SVC_NULL for context initiation rpc, SVC_INTG for context |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 802 | * destruction rpc |
| 803 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 804 | if (unlikely(req->rq_ctx_init)) |
| 805 | flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_NULL); |
| 806 | else if (unlikely(req->rq_ctx_fini)) |
| 807 | flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_INTG); |
| 808 | |
| 809 | /* user descriptor flag, null security can't do it anyway */ |
| 810 | if ((sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_UDESC) && |
| 811 | (req->rq_flvr.sf_rpc != SPTLRPC_FLVR_NULL)) |
| 812 | req->rq_pack_udesc = 1; |
| 813 | |
| 814 | /* bulk security flag */ |
| 815 | if ((req->rq_bulk_read || req->rq_bulk_write) && |
| 816 | sptlrpc_flavor_has_bulk(&req->rq_flvr)) |
| 817 | req->rq_pack_bulk = 1; |
| 818 | } |
| 819 | |
| 820 | void sptlrpc_request_out_callback(struct ptlrpc_request *req) |
| 821 | { |
| 822 | if (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc) != SPTLRPC_SVC_PRIV) |
| 823 | return; |
| 824 | |
| 825 | LASSERT(req->rq_clrbuf); |
| 826 | if (req->rq_pool || !req->rq_reqbuf) |
| 827 | return; |
| 828 | |
Julia Lawall | 9ae1059 | 2015-05-01 17:51:12 +0200 | [diff] [blame] | 829 | kfree(req->rq_reqbuf); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 830 | req->rq_reqbuf = NULL; |
| 831 | req->rq_reqbuf_len = 0; |
| 832 | } |
| 833 | |
| 834 | /** |
| 835 | * Given an import \a imp, check whether current user has a valid context |
| 836 | * or not. We may create a new context and try to refresh it, and try |
| 837 | * repeatedly try in case of non-fatal errors. Return 0 means success. |
| 838 | */ |
| 839 | int sptlrpc_import_check_ctx(struct obd_import *imp) |
| 840 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 841 | struct ptlrpc_sec *sec; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 842 | struct ptlrpc_cli_ctx *ctx; |
| 843 | struct ptlrpc_request *req = NULL; |
| 844 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 845 | |
| 846 | might_sleep(); |
| 847 | |
| 848 | sec = sptlrpc_import_sec_ref(imp); |
| 849 | ctx = get_my_ctx(sec); |
| 850 | sptlrpc_sec_put(sec); |
| 851 | |
| 852 | if (!ctx) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 853 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 854 | |
| 855 | if (cli_ctx_is_eternal(ctx) || |
| 856 | ctx->cc_ops->validate(ctx) == 0) { |
| 857 | sptlrpc_cli_ctx_put(ctx, 1); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 858 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 859 | } |
| 860 | |
| 861 | if (cli_ctx_is_error(ctx)) { |
| 862 | sptlrpc_cli_ctx_put(ctx, 1); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 863 | return -EACCES; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 864 | } |
| 865 | |
Ann Koehler | 0be19af | 2014-04-27 13:06:36 -0400 | [diff] [blame] | 866 | req = ptlrpc_request_cache_alloc(GFP_NOFS); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 867 | if (!req) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 868 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 869 | |
| 870 | spin_lock_init(&req->rq_lock); |
| 871 | atomic_set(&req->rq_refcount, 10000); |
| 872 | INIT_LIST_HEAD(&req->rq_ctx_chain); |
| 873 | init_waitqueue_head(&req->rq_reply_waitq); |
| 874 | init_waitqueue_head(&req->rq_set_waitq); |
| 875 | req->rq_import = imp; |
| 876 | req->rq_flvr = sec->ps_flvr; |
| 877 | req->rq_cli_ctx = ctx; |
| 878 | |
| 879 | rc = sptlrpc_req_refresh_ctx(req, 0); |
| 880 | LASSERT(list_empty(&req->rq_ctx_chain)); |
| 881 | sptlrpc_cli_ctx_put(req->rq_cli_ctx, 1); |
Andriy Skulysh | 35b2e1b | 2014-04-27 13:06:35 -0400 | [diff] [blame] | 882 | ptlrpc_request_cache_free(req); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 883 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 884 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 885 | } |
| 886 | |
| 887 | /** |
| 888 | * Used by ptlrpc client, to perform the pre-defined security transformation |
| 889 | * upon the request message of \a req. After this function called, |
| 890 | * req->rq_reqmsg is still accessible as clear text. |
| 891 | */ |
| 892 | int sptlrpc_cli_wrap_request(struct ptlrpc_request *req) |
| 893 | { |
| 894 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 895 | int rc = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 896 | |
| 897 | LASSERT(ctx); |
| 898 | LASSERT(ctx->cc_sec); |
| 899 | LASSERT(req->rq_reqbuf || req->rq_clrbuf); |
| 900 | |
| 901 | /* we wrap bulk request here because now we can be sure |
| 902 | * the context is uptodate. |
| 903 | */ |
| 904 | if (req->rq_bulk) { |
| 905 | rc = sptlrpc_cli_wrap_bulk(req, req->rq_bulk); |
| 906 | if (rc) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 907 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 908 | } |
| 909 | |
| 910 | switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) { |
| 911 | case SPTLRPC_SVC_NULL: |
| 912 | case SPTLRPC_SVC_AUTH: |
| 913 | case SPTLRPC_SVC_INTG: |
| 914 | LASSERT(ctx->cc_ops->sign); |
| 915 | rc = ctx->cc_ops->sign(ctx, req); |
| 916 | break; |
| 917 | case SPTLRPC_SVC_PRIV: |
| 918 | LASSERT(ctx->cc_ops->seal); |
| 919 | rc = ctx->cc_ops->seal(ctx, req); |
| 920 | break; |
| 921 | default: |
| 922 | LBUG(); |
| 923 | } |
| 924 | |
| 925 | if (rc == 0) { |
| 926 | LASSERT(req->rq_reqdata_len); |
| 927 | LASSERT(req->rq_reqdata_len % 8 == 0); |
| 928 | LASSERT(req->rq_reqdata_len <= req->rq_reqbuf_len); |
| 929 | } |
| 930 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 931 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 932 | } |
| 933 | |
| 934 | static int do_cli_unwrap_reply(struct ptlrpc_request *req) |
| 935 | { |
| 936 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 937 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 938 | |
| 939 | LASSERT(ctx); |
| 940 | LASSERT(ctx->cc_sec); |
| 941 | LASSERT(req->rq_repbuf); |
| 942 | LASSERT(req->rq_repdata); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 943 | LASSERT(!req->rq_repmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 944 | |
| 945 | req->rq_rep_swab_mask = 0; |
| 946 | |
| 947 | rc = __lustre_unpack_msg(req->rq_repdata, req->rq_repdata_len); |
| 948 | switch (rc) { |
| 949 | case 1: |
| 950 | lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF); |
| 951 | case 0: |
| 952 | break; |
| 953 | default: |
Greg Kroah-Hartman | b0f5aad | 2014-07-12 20:06:04 -0700 | [diff] [blame] | 954 | CERROR("failed unpack reply: x%llu\n", req->rq_xid); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 955 | return -EPROTO; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | if (req->rq_repdata_len < sizeof(struct lustre_msg)) { |
| 959 | CERROR("replied data length %d too small\n", |
| 960 | req->rq_repdata_len); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 961 | return -EPROTO; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 962 | } |
| 963 | |
| 964 | if (SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr) != |
| 965 | SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc)) { |
| 966 | CERROR("reply policy %u doesn't match request policy %u\n", |
| 967 | SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr), |
| 968 | SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc)); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 969 | return -EPROTO; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 970 | } |
| 971 | |
| 972 | switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) { |
| 973 | case SPTLRPC_SVC_NULL: |
| 974 | case SPTLRPC_SVC_AUTH: |
| 975 | case SPTLRPC_SVC_INTG: |
| 976 | LASSERT(ctx->cc_ops->verify); |
| 977 | rc = ctx->cc_ops->verify(ctx, req); |
| 978 | break; |
| 979 | case SPTLRPC_SVC_PRIV: |
| 980 | LASSERT(ctx->cc_ops->unseal); |
| 981 | rc = ctx->cc_ops->unseal(ctx, req); |
| 982 | break; |
| 983 | default: |
| 984 | LBUG(); |
| 985 | } |
| 986 | LASSERT(rc || req->rq_repmsg || req->rq_resend); |
| 987 | |
| 988 | if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL && |
| 989 | !req->rq_ctx_init) |
| 990 | req->rq_rep_swab_mask = 0; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 991 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 992 | } |
| 993 | |
| 994 | /** |
| 995 | * Used by ptlrpc client, to perform security transformation upon the reply |
| 996 | * message of \a req. After return successfully, req->rq_repmsg points to |
| 997 | * the reply message in clear text. |
| 998 | * |
| 999 | * \pre the reply buffer should have been un-posted from LNet, so nothing is |
| 1000 | * going to change. |
| 1001 | */ |
| 1002 | int sptlrpc_cli_unwrap_reply(struct ptlrpc_request *req) |
| 1003 | { |
| 1004 | LASSERT(req->rq_repbuf); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1005 | LASSERT(!req->rq_repdata); |
| 1006 | LASSERT(!req->rq_repmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1007 | LASSERT(req->rq_reply_off + req->rq_nob_received <= req->rq_repbuf_len); |
| 1008 | |
| 1009 | if (req->rq_reply_off == 0 && |
| 1010 | (lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)) { |
| 1011 | CERROR("real reply with offset 0\n"); |
| 1012 | return -EPROTO; |
| 1013 | } |
| 1014 | |
| 1015 | if (req->rq_reply_off % 8 != 0) { |
| 1016 | CERROR("reply at odd offset %u\n", req->rq_reply_off); |
| 1017 | return -EPROTO; |
| 1018 | } |
| 1019 | |
| 1020 | req->rq_repdata = (struct lustre_msg *) |
| 1021 | (req->rq_repbuf + req->rq_reply_off); |
| 1022 | req->rq_repdata_len = req->rq_nob_received; |
| 1023 | |
| 1024 | return do_cli_unwrap_reply(req); |
| 1025 | } |
| 1026 | |
| 1027 | /** |
| 1028 | * Used by ptlrpc client, to perform security transformation upon the early |
| 1029 | * reply message of \a req. We expect the rq_reply_off is 0, and |
| 1030 | * rq_nob_received is the early reply size. |
| 1031 | * |
| 1032 | * Because the receive buffer might be still posted, the reply data might be |
| 1033 | * changed at any time, no matter we're holding rq_lock or not. For this reason |
| 1034 | * we allocate a separate ptlrpc_request and reply buffer for early reply |
| 1035 | * processing. |
| 1036 | * |
| 1037 | * \retval 0 success, \a req_ret is filled with a duplicated ptlrpc_request. |
| 1038 | * Later the caller must call sptlrpc_cli_finish_early_reply() on the returned |
| 1039 | * \a *req_ret to release it. |
| 1040 | * \retval -ev error number, and \a req_ret will not be set. |
| 1041 | */ |
| 1042 | int sptlrpc_cli_unwrap_early_reply(struct ptlrpc_request *req, |
| 1043 | struct ptlrpc_request **req_ret) |
| 1044 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1045 | struct ptlrpc_request *early_req; |
| 1046 | char *early_buf; |
| 1047 | int early_bufsz, early_size; |
| 1048 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1049 | |
Ann Koehler | 0be19af | 2014-04-27 13:06:36 -0400 | [diff] [blame] | 1050 | early_req = ptlrpc_request_cache_alloc(GFP_NOFS); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1051 | if (!early_req) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1052 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1053 | |
| 1054 | early_size = req->rq_nob_received; |
| 1055 | early_bufsz = size_roundup_power2(early_size); |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 1056 | early_buf = libcfs_kvzalloc(early_bufsz, GFP_NOFS); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1057 | if (!early_buf) { |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1058 | rc = -ENOMEM; |
| 1059 | goto err_req; |
| 1060 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1061 | |
| 1062 | /* sanity checkings and copy data out, do it inside spinlock */ |
| 1063 | spin_lock(&req->rq_lock); |
| 1064 | |
| 1065 | if (req->rq_replied) { |
| 1066 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1067 | rc = -EALREADY; |
| 1068 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1069 | } |
| 1070 | |
| 1071 | LASSERT(req->rq_repbuf); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1072 | LASSERT(!req->rq_repdata); |
| 1073 | LASSERT(!req->rq_repmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1074 | |
| 1075 | if (req->rq_reply_off != 0) { |
| 1076 | CERROR("early reply with offset %u\n", req->rq_reply_off); |
| 1077 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1078 | rc = -EPROTO; |
| 1079 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1080 | } |
| 1081 | |
| 1082 | if (req->rq_nob_received != early_size) { |
| 1083 | /* even another early arrived the size should be the same */ |
| 1084 | CERROR("data size has changed from %u to %u\n", |
| 1085 | early_size, req->rq_nob_received); |
| 1086 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1087 | rc = -EINVAL; |
| 1088 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1089 | } |
| 1090 | |
| 1091 | if (req->rq_nob_received < sizeof(struct lustre_msg)) { |
| 1092 | CERROR("early reply length %d too small\n", |
| 1093 | req->rq_nob_received); |
| 1094 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1095 | rc = -EALREADY; |
| 1096 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1097 | } |
| 1098 | |
| 1099 | memcpy(early_buf, req->rq_repbuf, early_size); |
| 1100 | spin_unlock(&req->rq_lock); |
| 1101 | |
| 1102 | spin_lock_init(&early_req->rq_lock); |
| 1103 | early_req->rq_cli_ctx = sptlrpc_cli_ctx_get(req->rq_cli_ctx); |
| 1104 | early_req->rq_flvr = req->rq_flvr; |
| 1105 | early_req->rq_repbuf = early_buf; |
| 1106 | early_req->rq_repbuf_len = early_bufsz; |
| 1107 | early_req->rq_repdata = (struct lustre_msg *) early_buf; |
| 1108 | early_req->rq_repdata_len = early_size; |
| 1109 | early_req->rq_early = 1; |
| 1110 | early_req->rq_reqmsg = req->rq_reqmsg; |
| 1111 | |
| 1112 | rc = do_cli_unwrap_reply(early_req); |
| 1113 | if (rc) { |
| 1114 | DEBUG_REQ(D_ADAPTTO, early_req, |
| 1115 | "error %d unwrap early reply", rc); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1116 | goto err_ctx; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1117 | } |
| 1118 | |
| 1119 | LASSERT(early_req->rq_repmsg); |
| 1120 | *req_ret = early_req; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1121 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1122 | |
| 1123 | err_ctx: |
| 1124 | sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1); |
| 1125 | err_buf: |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 1126 | kvfree(early_buf); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1127 | err_req: |
Andriy Skulysh | 35b2e1b | 2014-04-27 13:06:35 -0400 | [diff] [blame] | 1128 | ptlrpc_request_cache_free(early_req); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1129 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1130 | } |
| 1131 | |
| 1132 | /** |
| 1133 | * Used by ptlrpc client, to release a processed early reply \a early_req. |
| 1134 | * |
| 1135 | * \pre \a early_req was obtained from calling sptlrpc_cli_unwrap_early_reply(). |
| 1136 | */ |
| 1137 | void sptlrpc_cli_finish_early_reply(struct ptlrpc_request *early_req) |
| 1138 | { |
| 1139 | LASSERT(early_req->rq_repbuf); |
| 1140 | LASSERT(early_req->rq_repdata); |
| 1141 | LASSERT(early_req->rq_repmsg); |
| 1142 | |
| 1143 | sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1); |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 1144 | kvfree(early_req->rq_repbuf); |
Andriy Skulysh | 35b2e1b | 2014-04-27 13:06:35 -0400 | [diff] [blame] | 1145 | ptlrpc_request_cache_free(early_req); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1146 | } |
| 1147 | |
| 1148 | /************************************************** |
| 1149 | * sec ID * |
| 1150 | **************************************************/ |
| 1151 | |
| 1152 | /* |
| 1153 | * "fixed" sec (e.g. null) use sec_id < 0 |
| 1154 | */ |
| 1155 | static atomic_t sptlrpc_sec_id = ATOMIC_INIT(1); |
| 1156 | |
| 1157 | int sptlrpc_get_next_secid(void) |
| 1158 | { |
| 1159 | return atomic_inc_return(&sptlrpc_sec_id); |
| 1160 | } |
| 1161 | EXPORT_SYMBOL(sptlrpc_get_next_secid); |
| 1162 | |
| 1163 | /************************************************** |
| 1164 | * client side high-level security APIs * |
| 1165 | **************************************************/ |
| 1166 | |
| 1167 | static int sec_cop_flush_ctx_cache(struct ptlrpc_sec *sec, uid_t uid, |
| 1168 | int grace, int force) |
| 1169 | { |
| 1170 | struct ptlrpc_sec_policy *policy = sec->ps_policy; |
| 1171 | |
| 1172 | LASSERT(policy->sp_cops); |
| 1173 | LASSERT(policy->sp_cops->flush_ctx_cache); |
| 1174 | |
| 1175 | return policy->sp_cops->flush_ctx_cache(sec, uid, grace, force); |
| 1176 | } |
| 1177 | |
| 1178 | static void sec_cop_destroy_sec(struct ptlrpc_sec *sec) |
| 1179 | { |
| 1180 | struct ptlrpc_sec_policy *policy = sec->ps_policy; |
| 1181 | |
| 1182 | LASSERT_ATOMIC_ZERO(&sec->ps_refcount); |
| 1183 | LASSERT_ATOMIC_ZERO(&sec->ps_nctx); |
| 1184 | LASSERT(policy->sp_cops->destroy_sec); |
| 1185 | |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1186 | CDEBUG(D_SEC, "%s@%p: being destroyed\n", sec->ps_policy->sp_name, sec); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1187 | |
| 1188 | policy->sp_cops->destroy_sec(sec); |
| 1189 | sptlrpc_policy_put(policy); |
| 1190 | } |
| 1191 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1192 | static void sptlrpc_sec_kill(struct ptlrpc_sec *sec) |
| 1193 | { |
| 1194 | LASSERT_ATOMIC_POS(&sec->ps_refcount); |
| 1195 | |
| 1196 | if (sec->ps_policy->sp_cops->kill_sec) { |
| 1197 | sec->ps_policy->sp_cops->kill_sec(sec); |
| 1198 | |
| 1199 | sec_cop_flush_ctx_cache(sec, -1, 1, 1); |
| 1200 | } |
| 1201 | } |
| 1202 | |
Shraddha Barke | be23ce1 | 2015-10-05 05:32:39 +0530 | [diff] [blame] | 1203 | static struct ptlrpc_sec *sptlrpc_sec_get(struct ptlrpc_sec *sec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1204 | { |
| 1205 | if (sec) |
| 1206 | atomic_inc(&sec->ps_refcount); |
| 1207 | |
| 1208 | return sec; |
| 1209 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1210 | |
| 1211 | void sptlrpc_sec_put(struct ptlrpc_sec *sec) |
| 1212 | { |
| 1213 | if (sec) { |
| 1214 | LASSERT_ATOMIC_POS(&sec->ps_refcount); |
| 1215 | |
| 1216 | if (atomic_dec_and_test(&sec->ps_refcount)) { |
| 1217 | sptlrpc_gc_del_sec(sec); |
| 1218 | sec_cop_destroy_sec(sec); |
| 1219 | } |
| 1220 | } |
| 1221 | } |
| 1222 | EXPORT_SYMBOL(sptlrpc_sec_put); |
| 1223 | |
| 1224 | /* |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1225 | * policy module is responsible for taking reference of import |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1226 | */ |
| 1227 | static |
Greg Donald | aff9d8e | 2014-08-21 11:07:42 -0500 | [diff] [blame] | 1228 | struct ptlrpc_sec *sptlrpc_sec_create(struct obd_import *imp, |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1229 | struct ptlrpc_svc_ctx *svc_ctx, |
| 1230 | struct sptlrpc_flavor *sf, |
| 1231 | enum lustre_sec_part sp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1232 | { |
| 1233 | struct ptlrpc_sec_policy *policy; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1234 | struct ptlrpc_sec *sec; |
| 1235 | char str[32]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1236 | |
| 1237 | if (svc_ctx) { |
| 1238 | LASSERT(imp->imp_dlm_fake == 1); |
| 1239 | |
| 1240 | CDEBUG(D_SEC, "%s %s: reverse sec using flavor %s\n", |
| 1241 | imp->imp_obd->obd_type->typ_name, |
| 1242 | imp->imp_obd->obd_name, |
| 1243 | sptlrpc_flavor2name(sf, str, sizeof(str))); |
| 1244 | |
| 1245 | policy = sptlrpc_policy_get(svc_ctx->sc_policy); |
| 1246 | sf->sf_flags |= PTLRPC_SEC_FL_REVERSE | PTLRPC_SEC_FL_ROOTONLY; |
| 1247 | } else { |
| 1248 | LASSERT(imp->imp_dlm_fake == 0); |
| 1249 | |
| 1250 | CDEBUG(D_SEC, "%s %s: select security flavor %s\n", |
| 1251 | imp->imp_obd->obd_type->typ_name, |
| 1252 | imp->imp_obd->obd_name, |
| 1253 | sptlrpc_flavor2name(sf, str, sizeof(str))); |
| 1254 | |
| 1255 | policy = sptlrpc_wireflavor2policy(sf->sf_rpc); |
| 1256 | if (!policy) { |
| 1257 | CERROR("invalid flavor 0x%x\n", sf->sf_rpc); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1258 | return NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | sec = policy->sp_cops->create_sec(imp, svc_ctx, sf); |
| 1263 | if (sec) { |
| 1264 | atomic_inc(&sec->ps_refcount); |
| 1265 | |
| 1266 | sec->ps_part = sp; |
| 1267 | |
| 1268 | if (sec->ps_gc_interval && policy->sp_cops->gc_ctx) |
| 1269 | sptlrpc_gc_add_sec(sec); |
| 1270 | } else { |
| 1271 | sptlrpc_policy_put(policy); |
| 1272 | } |
| 1273 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1274 | return sec; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1275 | } |
| 1276 | |
| 1277 | struct ptlrpc_sec *sptlrpc_import_sec_ref(struct obd_import *imp) |
| 1278 | { |
| 1279 | struct ptlrpc_sec *sec; |
| 1280 | |
| 1281 | spin_lock(&imp->imp_lock); |
| 1282 | sec = sptlrpc_sec_get(imp->imp_sec); |
| 1283 | spin_unlock(&imp->imp_lock); |
| 1284 | |
| 1285 | return sec; |
| 1286 | } |
| 1287 | EXPORT_SYMBOL(sptlrpc_import_sec_ref); |
| 1288 | |
| 1289 | static void sptlrpc_import_sec_install(struct obd_import *imp, |
| 1290 | struct ptlrpc_sec *sec) |
| 1291 | { |
| 1292 | struct ptlrpc_sec *old_sec; |
| 1293 | |
| 1294 | LASSERT_ATOMIC_POS(&sec->ps_refcount); |
| 1295 | |
| 1296 | spin_lock(&imp->imp_lock); |
| 1297 | old_sec = imp->imp_sec; |
| 1298 | imp->imp_sec = sec; |
| 1299 | spin_unlock(&imp->imp_lock); |
| 1300 | |
| 1301 | if (old_sec) { |
| 1302 | sptlrpc_sec_kill(old_sec); |
| 1303 | |
| 1304 | /* balance the ref taken by this import */ |
| 1305 | sptlrpc_sec_put(old_sec); |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | static inline |
| 1310 | int flavor_equal(struct sptlrpc_flavor *sf1, struct sptlrpc_flavor *sf2) |
| 1311 | { |
| 1312 | return (memcmp(sf1, sf2, sizeof(*sf1)) == 0); |
| 1313 | } |
| 1314 | |
| 1315 | static inline |
| 1316 | void flavor_copy(struct sptlrpc_flavor *dst, struct sptlrpc_flavor *src) |
| 1317 | { |
| 1318 | *dst = *src; |
| 1319 | } |
| 1320 | |
| 1321 | static void sptlrpc_import_sec_adapt_inplace(struct obd_import *imp, |
| 1322 | struct ptlrpc_sec *sec, |
| 1323 | struct sptlrpc_flavor *sf) |
| 1324 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1325 | char str1[32], str2[32]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1326 | |
| 1327 | if (sec->ps_flvr.sf_flags != sf->sf_flags) |
| 1328 | CDEBUG(D_SEC, "changing sec flags: %s -> %s\n", |
| 1329 | sptlrpc_secflags2str(sec->ps_flvr.sf_flags, |
| 1330 | str1, sizeof(str1)), |
| 1331 | sptlrpc_secflags2str(sf->sf_flags, |
| 1332 | str2, sizeof(str2))); |
| 1333 | |
| 1334 | spin_lock(&sec->ps_lock); |
| 1335 | flavor_copy(&sec->ps_flvr, sf); |
| 1336 | spin_unlock(&sec->ps_lock); |
| 1337 | } |
| 1338 | |
| 1339 | /** |
| 1340 | * To get an appropriate ptlrpc_sec for the \a imp, according to the current |
| 1341 | * configuration. Upon called, imp->imp_sec may or may not be NULL. |
| 1342 | * |
| 1343 | * - regular import: \a svc_ctx should be NULL and \a flvr is ignored; |
| 1344 | * - reverse import: \a svc_ctx and \a flvr are obtained from incoming request. |
| 1345 | */ |
| 1346 | int sptlrpc_import_sec_adapt(struct obd_import *imp, |
| 1347 | struct ptlrpc_svc_ctx *svc_ctx, |
| 1348 | struct sptlrpc_flavor *flvr) |
| 1349 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1350 | struct ptlrpc_connection *conn; |
| 1351 | struct sptlrpc_flavor sf; |
| 1352 | struct ptlrpc_sec *sec, *newsec; |
| 1353 | enum lustre_sec_part sp; |
| 1354 | char str[24]; |
| 1355 | int rc = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1356 | |
| 1357 | might_sleep(); |
| 1358 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1359 | if (!imp) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1360 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1361 | |
| 1362 | conn = imp->imp_connection; |
| 1363 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1364 | if (!svc_ctx) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1365 | struct client_obd *cliobd = &imp->imp_obd->u.cli; |
| 1366 | /* |
| 1367 | * normal import, determine flavor from rule set, except |
| 1368 | * for mgc the flavor is predetermined. |
| 1369 | */ |
| 1370 | if (cliobd->cl_sp_me == LUSTRE_SP_MGC) |
| 1371 | sf = cliobd->cl_flvr_mgc; |
| 1372 | else |
| 1373 | sptlrpc_conf_choose_flavor(cliobd->cl_sp_me, |
| 1374 | cliobd->cl_sp_to, |
| 1375 | &cliobd->cl_target_uuid, |
| 1376 | conn->c_self, &sf); |
| 1377 | |
| 1378 | sp = imp->imp_obd->u.cli.cl_sp_me; |
| 1379 | } else { |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1380 | /* reverse import, determine flavor from incoming request */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1381 | sf = *flvr; |
| 1382 | |
| 1383 | if (sf.sf_rpc != SPTLRPC_FLVR_NULL) |
| 1384 | sf.sf_flags = PTLRPC_SEC_FL_REVERSE | |
| 1385 | PTLRPC_SEC_FL_ROOTONLY; |
| 1386 | |
| 1387 | sp = sptlrpc_target_sec_part(imp->imp_obd); |
| 1388 | } |
| 1389 | |
| 1390 | sec = sptlrpc_import_sec_ref(imp); |
| 1391 | if (sec) { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1392 | char str2[24]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1393 | |
| 1394 | if (flavor_equal(&sf, &sec->ps_flvr)) |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1395 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1396 | |
| 1397 | CDEBUG(D_SEC, "import %s->%s: changing flavor %s -> %s\n", |
| 1398 | imp->imp_obd->obd_name, |
| 1399 | obd_uuid2str(&conn->c_remote_uuid), |
| 1400 | sptlrpc_flavor2name(&sec->ps_flvr, str, sizeof(str)), |
| 1401 | sptlrpc_flavor2name(&sf, str2, sizeof(str2))); |
| 1402 | |
| 1403 | if (SPTLRPC_FLVR_POLICY(sf.sf_rpc) == |
| 1404 | SPTLRPC_FLVR_POLICY(sec->ps_flvr.sf_rpc) && |
| 1405 | SPTLRPC_FLVR_MECH(sf.sf_rpc) == |
| 1406 | SPTLRPC_FLVR_MECH(sec->ps_flvr.sf_rpc)) { |
| 1407 | sptlrpc_import_sec_adapt_inplace(imp, sec, &sf); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1408 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1409 | } |
| 1410 | } else if (SPTLRPC_FLVR_BASE(sf.sf_rpc) != |
| 1411 | SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL)) { |
| 1412 | CDEBUG(D_SEC, "import %s->%s netid %x: select flavor %s\n", |
| 1413 | imp->imp_obd->obd_name, |
| 1414 | obd_uuid2str(&conn->c_remote_uuid), |
| 1415 | LNET_NIDNET(conn->c_self), |
| 1416 | sptlrpc_flavor2name(&sf, str, sizeof(str))); |
| 1417 | } |
| 1418 | |
| 1419 | mutex_lock(&imp->imp_sec_mutex); |
| 1420 | |
| 1421 | newsec = sptlrpc_sec_create(imp, svc_ctx, &sf, sp); |
| 1422 | if (newsec) { |
| 1423 | sptlrpc_import_sec_install(imp, newsec); |
| 1424 | } else { |
| 1425 | CERROR("import %s->%s: failed to create new sec\n", |
| 1426 | imp->imp_obd->obd_name, |
| 1427 | obd_uuid2str(&conn->c_remote_uuid)); |
| 1428 | rc = -EPERM; |
| 1429 | } |
| 1430 | |
| 1431 | mutex_unlock(&imp->imp_sec_mutex); |
| 1432 | out: |
| 1433 | sptlrpc_sec_put(sec); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1434 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1435 | } |
| 1436 | |
| 1437 | void sptlrpc_import_sec_put(struct obd_import *imp) |
| 1438 | { |
| 1439 | if (imp->imp_sec) { |
| 1440 | sptlrpc_sec_kill(imp->imp_sec); |
| 1441 | |
| 1442 | sptlrpc_sec_put(imp->imp_sec); |
| 1443 | imp->imp_sec = NULL; |
| 1444 | } |
| 1445 | } |
| 1446 | |
| 1447 | static void import_flush_ctx_common(struct obd_import *imp, |
| 1448 | uid_t uid, int grace, int force) |
| 1449 | { |
| 1450 | struct ptlrpc_sec *sec; |
| 1451 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1452 | if (!imp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1453 | return; |
| 1454 | |
| 1455 | sec = sptlrpc_import_sec_ref(imp); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1456 | if (!sec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1457 | return; |
| 1458 | |
| 1459 | sec_cop_flush_ctx_cache(sec, uid, grace, force); |
| 1460 | sptlrpc_sec_put(sec); |
| 1461 | } |
| 1462 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1463 | void sptlrpc_import_flush_my_ctx(struct obd_import *imp) |
| 1464 | { |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 1465 | import_flush_ctx_common(imp, from_kuid(&init_user_ns, current_uid()), |
| 1466 | 1, 1); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1467 | } |
| 1468 | EXPORT_SYMBOL(sptlrpc_import_flush_my_ctx); |
| 1469 | |
| 1470 | void sptlrpc_import_flush_all_ctx(struct obd_import *imp) |
| 1471 | { |
| 1472 | import_flush_ctx_common(imp, -1, 1, 1); |
| 1473 | } |
| 1474 | EXPORT_SYMBOL(sptlrpc_import_flush_all_ctx); |
| 1475 | |
| 1476 | /** |
| 1477 | * Used by ptlrpc client to allocate request buffer of \a req. Upon return |
| 1478 | * successfully, req->rq_reqmsg points to a buffer with size \a msgsize. |
| 1479 | */ |
| 1480 | int sptlrpc_cli_alloc_reqbuf(struct ptlrpc_request *req, int msgsize) |
| 1481 | { |
| 1482 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1483 | struct ptlrpc_sec_policy *policy; |
| 1484 | int rc; |
| 1485 | |
| 1486 | LASSERT(ctx); |
| 1487 | LASSERT(ctx->cc_sec); |
| 1488 | LASSERT(ctx->cc_sec->ps_policy); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1489 | LASSERT(!req->rq_reqmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1490 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 1491 | |
| 1492 | policy = ctx->cc_sec->ps_policy; |
| 1493 | rc = policy->sp_cops->alloc_reqbuf(ctx->cc_sec, req, msgsize); |
| 1494 | if (!rc) { |
| 1495 | LASSERT(req->rq_reqmsg); |
| 1496 | LASSERT(req->rq_reqbuf || req->rq_clrbuf); |
| 1497 | |
| 1498 | /* zeroing preallocated buffer */ |
| 1499 | if (req->rq_pool) |
| 1500 | memset(req->rq_reqmsg, 0, msgsize); |
| 1501 | } |
| 1502 | |
| 1503 | return rc; |
| 1504 | } |
| 1505 | |
| 1506 | /** |
| 1507 | * Used by ptlrpc client to free request buffer of \a req. After this |
| 1508 | * req->rq_reqmsg is set to NULL and should not be accessed anymore. |
| 1509 | */ |
| 1510 | void sptlrpc_cli_free_reqbuf(struct ptlrpc_request *req) |
| 1511 | { |
| 1512 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1513 | struct ptlrpc_sec_policy *policy; |
| 1514 | |
| 1515 | LASSERT(ctx); |
| 1516 | LASSERT(ctx->cc_sec); |
| 1517 | LASSERT(ctx->cc_sec->ps_policy); |
| 1518 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 1519 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1520 | if (!req->rq_reqbuf && !req->rq_clrbuf) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1521 | return; |
| 1522 | |
| 1523 | policy = ctx->cc_sec->ps_policy; |
| 1524 | policy->sp_cops->free_reqbuf(ctx->cc_sec, req); |
| 1525 | req->rq_reqmsg = NULL; |
| 1526 | } |
| 1527 | |
| 1528 | /* |
| 1529 | * NOTE caller must guarantee the buffer size is enough for the enlargement |
| 1530 | */ |
| 1531 | void _sptlrpc_enlarge_msg_inplace(struct lustre_msg *msg, |
| 1532 | int segment, int newsize) |
| 1533 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1534 | void *src, *dst; |
| 1535 | int oldsize, oldmsg_size, movesize; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1536 | |
| 1537 | LASSERT(segment < msg->lm_bufcount); |
| 1538 | LASSERT(msg->lm_buflens[segment] <= newsize); |
| 1539 | |
| 1540 | if (msg->lm_buflens[segment] == newsize) |
| 1541 | return; |
| 1542 | |
| 1543 | /* nothing to do if we are enlarging the last segment */ |
| 1544 | if (segment == msg->lm_bufcount - 1) { |
| 1545 | msg->lm_buflens[segment] = newsize; |
| 1546 | return; |
| 1547 | } |
| 1548 | |
| 1549 | oldsize = msg->lm_buflens[segment]; |
| 1550 | |
| 1551 | src = lustre_msg_buf(msg, segment + 1, 0); |
| 1552 | msg->lm_buflens[segment] = newsize; |
| 1553 | dst = lustre_msg_buf(msg, segment + 1, 0); |
| 1554 | msg->lm_buflens[segment] = oldsize; |
| 1555 | |
| 1556 | /* move from segment + 1 to end segment */ |
| 1557 | LASSERT(msg->lm_magic == LUSTRE_MSG_MAGIC_V2); |
| 1558 | oldmsg_size = lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens); |
| 1559 | movesize = oldmsg_size - ((unsigned long) src - (unsigned long) msg); |
| 1560 | LASSERT(movesize >= 0); |
| 1561 | |
| 1562 | if (movesize) |
| 1563 | memmove(dst, src, movesize); |
| 1564 | |
| 1565 | /* note we don't clear the ares where old data live, not secret */ |
| 1566 | |
| 1567 | /* finally set new segment size */ |
| 1568 | msg->lm_buflens[segment] = newsize; |
| 1569 | } |
| 1570 | EXPORT_SYMBOL(_sptlrpc_enlarge_msg_inplace); |
| 1571 | |
| 1572 | /** |
| 1573 | * Used by ptlrpc client to enlarge the \a segment of request message pointed |
| 1574 | * by req->rq_reqmsg to size \a newsize, all previously filled-in data will be |
| 1575 | * preserved after the enlargement. this must be called after original request |
| 1576 | * buffer being allocated. |
| 1577 | * |
| 1578 | * \note after this be called, rq_reqmsg and rq_reqlen might have been changed, |
| 1579 | * so caller should refresh its local pointers if needed. |
| 1580 | */ |
| 1581 | int sptlrpc_cli_enlarge_reqbuf(struct ptlrpc_request *req, |
| 1582 | int segment, int newsize) |
| 1583 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1584 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1585 | struct ptlrpc_sec_cops *cops; |
| 1586 | struct lustre_msg *msg = req->rq_reqmsg; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1587 | |
| 1588 | LASSERT(ctx); |
| 1589 | LASSERT(msg); |
| 1590 | LASSERT(msg->lm_bufcount > segment); |
| 1591 | LASSERT(msg->lm_buflens[segment] <= newsize); |
| 1592 | |
| 1593 | if (msg->lm_buflens[segment] == newsize) |
| 1594 | return 0; |
| 1595 | |
| 1596 | cops = ctx->cc_sec->ps_policy->sp_cops; |
| 1597 | LASSERT(cops->enlarge_reqbuf); |
| 1598 | return cops->enlarge_reqbuf(ctx->cc_sec, req, segment, newsize); |
| 1599 | } |
| 1600 | EXPORT_SYMBOL(sptlrpc_cli_enlarge_reqbuf); |
| 1601 | |
| 1602 | /** |
| 1603 | * Used by ptlrpc client to allocate reply buffer of \a req. |
| 1604 | * |
| 1605 | * \note After this, req->rq_repmsg is still not accessible. |
| 1606 | */ |
| 1607 | int sptlrpc_cli_alloc_repbuf(struct ptlrpc_request *req, int msgsize) |
| 1608 | { |
| 1609 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1610 | struct ptlrpc_sec_policy *policy; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1611 | |
| 1612 | LASSERT(ctx); |
| 1613 | LASSERT(ctx->cc_sec); |
| 1614 | LASSERT(ctx->cc_sec->ps_policy); |
| 1615 | |
| 1616 | if (req->rq_repbuf) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1617 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1618 | |
| 1619 | policy = ctx->cc_sec->ps_policy; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1620 | return policy->sp_cops->alloc_repbuf(ctx->cc_sec, req, msgsize); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1621 | } |
| 1622 | |
| 1623 | /** |
| 1624 | * Used by ptlrpc client to free reply buffer of \a req. After this |
| 1625 | * req->rq_repmsg is set to NULL and should not be accessed anymore. |
| 1626 | */ |
| 1627 | void sptlrpc_cli_free_repbuf(struct ptlrpc_request *req) |
| 1628 | { |
| 1629 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1630 | struct ptlrpc_sec_policy *policy; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1631 | |
| 1632 | LASSERT(ctx); |
| 1633 | LASSERT(ctx->cc_sec); |
| 1634 | LASSERT(ctx->cc_sec->ps_policy); |
| 1635 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 1636 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1637 | if (!req->rq_repbuf) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1638 | return; |
| 1639 | LASSERT(req->rq_repbuf_len); |
| 1640 | |
| 1641 | policy = ctx->cc_sec->ps_policy; |
| 1642 | policy->sp_cops->free_repbuf(ctx->cc_sec, req); |
| 1643 | req->rq_repmsg = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1644 | } |
| 1645 | |
Shraddha Barke | be23ce1 | 2015-10-05 05:32:39 +0530 | [diff] [blame] | 1646 | static int sptlrpc_svc_install_rvs_ctx(struct obd_import *imp, |
| 1647 | struct ptlrpc_svc_ctx *ctx) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1648 | { |
| 1649 | struct ptlrpc_sec_policy *policy = ctx->sc_policy; |
| 1650 | |
| 1651 | if (!policy->sp_sops->install_rctx) |
| 1652 | return 0; |
| 1653 | return policy->sp_sops->install_rctx(imp, ctx); |
| 1654 | } |
| 1655 | |
| 1656 | /**************************************** |
| 1657 | * server side security * |
| 1658 | ****************************************/ |
| 1659 | |
| 1660 | static int flavor_allowed(struct sptlrpc_flavor *exp, |
| 1661 | struct ptlrpc_request *req) |
| 1662 | { |
| 1663 | struct sptlrpc_flavor *flvr = &req->rq_flvr; |
| 1664 | |
| 1665 | if (exp->sf_rpc == SPTLRPC_FLVR_ANY || exp->sf_rpc == flvr->sf_rpc) |
| 1666 | return 1; |
| 1667 | |
| 1668 | if ((req->rq_ctx_init || req->rq_ctx_fini) && |
| 1669 | SPTLRPC_FLVR_POLICY(exp->sf_rpc) == |
| 1670 | SPTLRPC_FLVR_POLICY(flvr->sf_rpc) && |
| 1671 | SPTLRPC_FLVR_MECH(exp->sf_rpc) == SPTLRPC_FLVR_MECH(flvr->sf_rpc)) |
| 1672 | return 1; |
| 1673 | |
| 1674 | return 0; |
| 1675 | } |
| 1676 | |
| 1677 | #define EXP_FLVR_UPDATE_EXPIRE (OBD_TIMEOUT_DEFAULT + 10) |
| 1678 | |
| 1679 | /** |
| 1680 | * Given an export \a exp, check whether the flavor of incoming \a req |
| 1681 | * is allowed by the export \a exp. Main logic is about taking care of |
| 1682 | * changing configurations. Return 0 means success. |
| 1683 | */ |
| 1684 | int sptlrpc_target_export_check(struct obd_export *exp, |
| 1685 | struct ptlrpc_request *req) |
| 1686 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1687 | struct sptlrpc_flavor flavor; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1688 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1689 | if (!exp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1690 | return 0; |
| 1691 | |
| 1692 | /* client side export has no imp_reverse, skip |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1693 | * FIXME maybe we should check flavor this as well??? |
| 1694 | */ |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1695 | if (!exp->exp_imp_reverse) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1696 | return 0; |
| 1697 | |
| 1698 | /* don't care about ctx fini rpc */ |
| 1699 | if (req->rq_ctx_fini) |
| 1700 | return 0; |
| 1701 | |
| 1702 | spin_lock(&exp->exp_lock); |
| 1703 | |
| 1704 | /* if flavor just changed (exp->exp_flvr_changed != 0), we wait for |
| 1705 | * the first req with the new flavor, then treat it as current flavor, |
| 1706 | * adapt reverse sec according to it. |
| 1707 | * note the first rpc with new flavor might not be with root ctx, in |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1708 | * which case delay the sec_adapt by leaving exp_flvr_adapt == 1. |
| 1709 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1710 | if (unlikely(exp->exp_flvr_changed) && |
| 1711 | flavor_allowed(&exp->exp_flvr_old[1], req)) { |
| 1712 | /* make the new flavor as "current", and old ones as |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1713 | * about-to-expire |
| 1714 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1715 | CDEBUG(D_SEC, "exp %p: just changed: %x->%x\n", exp, |
| 1716 | exp->exp_flvr.sf_rpc, exp->exp_flvr_old[1].sf_rpc); |
| 1717 | flavor = exp->exp_flvr_old[1]; |
| 1718 | exp->exp_flvr_old[1] = exp->exp_flvr_old[0]; |
| 1719 | exp->exp_flvr_expire[1] = exp->exp_flvr_expire[0]; |
| 1720 | exp->exp_flvr_old[0] = exp->exp_flvr; |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1721 | exp->exp_flvr_expire[0] = ktime_get_real_seconds() + |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1722 | EXP_FLVR_UPDATE_EXPIRE; |
| 1723 | exp->exp_flvr = flavor; |
| 1724 | |
| 1725 | /* flavor change finished */ |
| 1726 | exp->exp_flvr_changed = 0; |
| 1727 | LASSERT(exp->exp_flvr_adapt == 1); |
| 1728 | |
| 1729 | /* if it's gss, we only interested in root ctx init */ |
| 1730 | if (req->rq_auth_gss && |
| 1731 | !(req->rq_ctx_init && |
| 1732 | (req->rq_auth_usr_root || req->rq_auth_usr_mdt || |
| 1733 | req->rq_auth_usr_ost))) { |
| 1734 | spin_unlock(&exp->exp_lock); |
| 1735 | CDEBUG(D_SEC, "is good but not root(%d:%d:%d:%d:%d)\n", |
| 1736 | req->rq_auth_gss, req->rq_ctx_init, |
| 1737 | req->rq_auth_usr_root, req->rq_auth_usr_mdt, |
| 1738 | req->rq_auth_usr_ost); |
| 1739 | return 0; |
| 1740 | } |
| 1741 | |
| 1742 | exp->exp_flvr_adapt = 0; |
| 1743 | spin_unlock(&exp->exp_lock); |
| 1744 | |
| 1745 | return sptlrpc_import_sec_adapt(exp->exp_imp_reverse, |
| 1746 | req->rq_svc_ctx, &flavor); |
| 1747 | } |
| 1748 | |
| 1749 | /* if it equals to the current flavor, we accept it, but need to |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1750 | * dealing with reverse sec/ctx |
| 1751 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1752 | if (likely(flavor_allowed(&exp->exp_flvr, req))) { |
| 1753 | /* most cases should return here, we only interested in |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1754 | * gss root ctx init |
| 1755 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1756 | if (!req->rq_auth_gss || !req->rq_ctx_init || |
| 1757 | (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt && |
| 1758 | !req->rq_auth_usr_ost)) { |
| 1759 | spin_unlock(&exp->exp_lock); |
| 1760 | return 0; |
| 1761 | } |
| 1762 | |
| 1763 | /* if flavor just changed, we should not proceed, just leave |
| 1764 | * it and current flavor will be discovered and replaced |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1765 | * shortly, and let _this_ rpc pass through |
| 1766 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1767 | if (exp->exp_flvr_changed) { |
| 1768 | LASSERT(exp->exp_flvr_adapt); |
| 1769 | spin_unlock(&exp->exp_lock); |
| 1770 | return 0; |
| 1771 | } |
| 1772 | |
| 1773 | if (exp->exp_flvr_adapt) { |
| 1774 | exp->exp_flvr_adapt = 0; |
| 1775 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): do delayed adapt\n", |
| 1776 | exp, exp->exp_flvr.sf_rpc, |
| 1777 | exp->exp_flvr_old[0].sf_rpc, |
| 1778 | exp->exp_flvr_old[1].sf_rpc); |
| 1779 | flavor = exp->exp_flvr; |
| 1780 | spin_unlock(&exp->exp_lock); |
| 1781 | |
| 1782 | return sptlrpc_import_sec_adapt(exp->exp_imp_reverse, |
| 1783 | req->rq_svc_ctx, |
| 1784 | &flavor); |
| 1785 | } else { |
Joe Perches | 2d00bd1 | 2014-11-23 11:28:50 -0800 | [diff] [blame] | 1786 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): is current flavor, install rvs ctx\n", |
| 1787 | exp, exp->exp_flvr.sf_rpc, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1788 | exp->exp_flvr_old[0].sf_rpc, |
| 1789 | exp->exp_flvr_old[1].sf_rpc); |
| 1790 | spin_unlock(&exp->exp_lock); |
| 1791 | |
| 1792 | return sptlrpc_svc_install_rvs_ctx(exp->exp_imp_reverse, |
| 1793 | req->rq_svc_ctx); |
| 1794 | } |
| 1795 | } |
| 1796 | |
| 1797 | if (exp->exp_flvr_expire[0]) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1798 | if (exp->exp_flvr_expire[0] >= ktime_get_real_seconds()) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1799 | if (flavor_allowed(&exp->exp_flvr_old[0], req)) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1800 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): match the middle one (%lld)\n", exp, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1801 | exp->exp_flvr.sf_rpc, |
| 1802 | exp->exp_flvr_old[0].sf_rpc, |
| 1803 | exp->exp_flvr_old[1].sf_rpc, |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1804 | (s64)(exp->exp_flvr_expire[0] - |
| 1805 | ktime_get_real_seconds())); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1806 | spin_unlock(&exp->exp_lock); |
| 1807 | return 0; |
| 1808 | } |
| 1809 | } else { |
| 1810 | CDEBUG(D_SEC, "mark middle expired\n"); |
| 1811 | exp->exp_flvr_expire[0] = 0; |
| 1812 | } |
| 1813 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match middle\n", exp, |
| 1814 | exp->exp_flvr.sf_rpc, |
| 1815 | exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc, |
| 1816 | req->rq_flvr.sf_rpc); |
| 1817 | } |
| 1818 | |
| 1819 | /* now it doesn't match the current flavor, the only chance we can |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1820 | * accept it is match the old flavors which is not expired. |
| 1821 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1822 | if (exp->exp_flvr_changed == 0 && exp->exp_flvr_expire[1]) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1823 | if (exp->exp_flvr_expire[1] >= ktime_get_real_seconds()) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1824 | if (flavor_allowed(&exp->exp_flvr_old[1], req)) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1825 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): match the oldest one (%lld)\n", |
Joe Perches | 2d00bd1 | 2014-11-23 11:28:50 -0800 | [diff] [blame] | 1826 | exp, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1827 | exp->exp_flvr.sf_rpc, |
| 1828 | exp->exp_flvr_old[0].sf_rpc, |
| 1829 | exp->exp_flvr_old[1].sf_rpc, |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1830 | (s64)(exp->exp_flvr_expire[1] - |
| 1831 | ktime_get_real_seconds())); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1832 | spin_unlock(&exp->exp_lock); |
| 1833 | return 0; |
| 1834 | } |
| 1835 | } else { |
| 1836 | CDEBUG(D_SEC, "mark oldest expired\n"); |
| 1837 | exp->exp_flvr_expire[1] = 0; |
| 1838 | } |
| 1839 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match found\n", |
| 1840 | exp, exp->exp_flvr.sf_rpc, |
| 1841 | exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc, |
| 1842 | req->rq_flvr.sf_rpc); |
| 1843 | } else { |
| 1844 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): skip the last one\n", |
| 1845 | exp, exp->exp_flvr.sf_rpc, exp->exp_flvr_old[0].sf_rpc, |
| 1846 | exp->exp_flvr_old[1].sf_rpc); |
| 1847 | } |
| 1848 | |
| 1849 | spin_unlock(&exp->exp_lock); |
| 1850 | |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1851 | CWARN("exp %p(%s): req %p (%u|%u|%u|%u|%u|%u) with unauthorized flavor %x, expect %x|%x(%+lld)|%x(%+lld)\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1852 | exp, exp->exp_obd->obd_name, |
| 1853 | req, req->rq_auth_gss, req->rq_ctx_init, req->rq_ctx_fini, |
| 1854 | req->rq_auth_usr_root, req->rq_auth_usr_mdt, req->rq_auth_usr_ost, |
| 1855 | req->rq_flvr.sf_rpc, |
| 1856 | exp->exp_flvr.sf_rpc, |
| 1857 | exp->exp_flvr_old[0].sf_rpc, |
| 1858 | exp->exp_flvr_expire[0] ? |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1859 | (s64)(exp->exp_flvr_expire[0] - ktime_get_real_seconds()) : 0, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1860 | exp->exp_flvr_old[1].sf_rpc, |
| 1861 | exp->exp_flvr_expire[1] ? |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1862 | (s64)(exp->exp_flvr_expire[1] - ktime_get_real_seconds()) : 0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1863 | return -EACCES; |
| 1864 | } |
| 1865 | EXPORT_SYMBOL(sptlrpc_target_export_check); |
| 1866 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1867 | static int sptlrpc_svc_check_from(struct ptlrpc_request *req, int svc_rc) |
| 1868 | { |
| 1869 | /* peer's claim is unreliable unless gss is being used */ |
| 1870 | if (!req->rq_auth_gss || svc_rc == SECSVC_DROP) |
| 1871 | return svc_rc; |
| 1872 | |
| 1873 | switch (req->rq_sp_from) { |
| 1874 | case LUSTRE_SP_CLI: |
| 1875 | if (req->rq_auth_usr_mdt || req->rq_auth_usr_ost) { |
| 1876 | DEBUG_REQ(D_ERROR, req, "faked source CLI"); |
| 1877 | svc_rc = SECSVC_DROP; |
| 1878 | } |
| 1879 | break; |
| 1880 | case LUSTRE_SP_MDT: |
| 1881 | if (!req->rq_auth_usr_mdt) { |
| 1882 | DEBUG_REQ(D_ERROR, req, "faked source MDT"); |
| 1883 | svc_rc = SECSVC_DROP; |
| 1884 | } |
| 1885 | break; |
| 1886 | case LUSTRE_SP_OST: |
| 1887 | if (!req->rq_auth_usr_ost) { |
| 1888 | DEBUG_REQ(D_ERROR, req, "faked source OST"); |
| 1889 | svc_rc = SECSVC_DROP; |
| 1890 | } |
| 1891 | break; |
| 1892 | case LUSTRE_SP_MGS: |
| 1893 | case LUSTRE_SP_MGC: |
| 1894 | if (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt && |
| 1895 | !req->rq_auth_usr_ost) { |
| 1896 | DEBUG_REQ(D_ERROR, req, "faked source MGC/MGS"); |
| 1897 | svc_rc = SECSVC_DROP; |
| 1898 | } |
| 1899 | break; |
| 1900 | case LUSTRE_SP_ANY: |
| 1901 | default: |
| 1902 | DEBUG_REQ(D_ERROR, req, "invalid source %u", req->rq_sp_from); |
| 1903 | svc_rc = SECSVC_DROP; |
| 1904 | } |
| 1905 | |
| 1906 | return svc_rc; |
| 1907 | } |
| 1908 | |
| 1909 | /** |
| 1910 | * Used by ptlrpc server, to perform transformation upon request message of |
| 1911 | * incoming \a req. This must be the first thing to do with a incoming |
| 1912 | * request in ptlrpc layer. |
| 1913 | * |
| 1914 | * \retval SECSVC_OK success, and req->rq_reqmsg point to request message in |
| 1915 | * clear text, size is req->rq_reqlen; also req->rq_svc_ctx is set. |
| 1916 | * \retval SECSVC_COMPLETE success, the request has been fully processed, and |
| 1917 | * reply message has been prepared. |
| 1918 | * \retval SECSVC_DROP failed, this request should be dropped. |
| 1919 | */ |
| 1920 | int sptlrpc_svc_unwrap_request(struct ptlrpc_request *req) |
| 1921 | { |
| 1922 | struct ptlrpc_sec_policy *policy; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1923 | struct lustre_msg *msg = req->rq_reqbuf; |
| 1924 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1925 | |
| 1926 | LASSERT(msg); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1927 | LASSERT(!req->rq_reqmsg); |
| 1928 | LASSERT(!req->rq_repmsg); |
| 1929 | LASSERT(!req->rq_svc_ctx); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1930 | |
| 1931 | req->rq_req_swab_mask = 0; |
| 1932 | |
| 1933 | rc = __lustre_unpack_msg(msg, req->rq_reqdata_len); |
| 1934 | switch (rc) { |
| 1935 | case 1: |
| 1936 | lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF); |
| 1937 | case 0: |
| 1938 | break; |
| 1939 | default: |
Greg Kroah-Hartman | b0f5aad | 2014-07-12 20:06:04 -0700 | [diff] [blame] | 1940 | CERROR("error unpacking request from %s x%llu\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1941 | libcfs_id2str(req->rq_peer), req->rq_xid); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1942 | return SECSVC_DROP; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1943 | } |
| 1944 | |
| 1945 | req->rq_flvr.sf_rpc = WIRE_FLVR(msg->lm_secflvr); |
| 1946 | req->rq_sp_from = LUSTRE_SP_ANY; |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 1947 | req->rq_auth_uid = -1; |
| 1948 | req->rq_auth_mapped_uid = -1; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1949 | |
| 1950 | policy = sptlrpc_wireflavor2policy(req->rq_flvr.sf_rpc); |
| 1951 | if (!policy) { |
| 1952 | CERROR("unsupported rpc flavor %x\n", req->rq_flvr.sf_rpc); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1953 | return SECSVC_DROP; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1954 | } |
| 1955 | |
| 1956 | LASSERT(policy->sp_sops->accept); |
| 1957 | rc = policy->sp_sops->accept(req); |
| 1958 | sptlrpc_policy_put(policy); |
| 1959 | LASSERT(req->rq_reqmsg || rc != SECSVC_OK); |
| 1960 | LASSERT(req->rq_svc_ctx || rc == SECSVC_DROP); |
| 1961 | |
| 1962 | /* |
| 1963 | * if it's not null flavor (which means embedded packing msg), |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1964 | * reset the swab mask for the coming inner msg unpacking. |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1965 | */ |
| 1966 | if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL) |
| 1967 | req->rq_req_swab_mask = 0; |
| 1968 | |
| 1969 | /* sanity check for the request source */ |
| 1970 | rc = sptlrpc_svc_check_from(req, rc); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1971 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1972 | } |
| 1973 | |
| 1974 | /** |
| 1975 | * Used by ptlrpc server, to allocate reply buffer for \a req. If succeed, |
| 1976 | * req->rq_reply_state is set, and req->rq_reply_state->rs_msg point to |
| 1977 | * a buffer of \a msglen size. |
| 1978 | */ |
| 1979 | int sptlrpc_svc_alloc_rs(struct ptlrpc_request *req, int msglen) |
| 1980 | { |
| 1981 | struct ptlrpc_sec_policy *policy; |
| 1982 | struct ptlrpc_reply_state *rs; |
| 1983 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1984 | |
| 1985 | LASSERT(req->rq_svc_ctx); |
| 1986 | LASSERT(req->rq_svc_ctx->sc_policy); |
| 1987 | |
| 1988 | policy = req->rq_svc_ctx->sc_policy; |
| 1989 | LASSERT(policy->sp_sops->alloc_rs); |
| 1990 | |
| 1991 | rc = policy->sp_sops->alloc_rs(req, msglen); |
| 1992 | if (unlikely(rc == -ENOMEM)) { |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 1993 | struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt; |
Mike Rapoport | 50ffcb7 | 2015-10-13 16:03:40 +0300 | [diff] [blame] | 1994 | |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 1995 | if (svcpt->scp_service->srv_max_reply_size < |
| 1996 | msglen + sizeof(struct ptlrpc_reply_state)) { |
| 1997 | /* Just return failure if the size is too big */ |
James Nunez | 19b2056 | 2016-03-07 18:10:21 -0500 | [diff] [blame] | 1998 | CERROR("size of message is too big (%zd), %d allowed\n", |
Oleg Drokin | 30c0aa3 | 2016-02-26 01:50:02 -0500 | [diff] [blame] | 1999 | msglen + sizeof(struct ptlrpc_reply_state), |
| 2000 | svcpt->scp_service->srv_max_reply_size); |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 2001 | return -ENOMEM; |
| 2002 | } |
| 2003 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2004 | /* failed alloc, try emergency pool */ |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 2005 | rs = lustre_get_emerg_rs(svcpt); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 2006 | if (!rs) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 2007 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2008 | |
| 2009 | req->rq_reply_state = rs; |
| 2010 | rc = policy->sp_sops->alloc_rs(req, msglen); |
| 2011 | if (rc) { |
| 2012 | lustre_put_emerg_rs(rs); |
| 2013 | req->rq_reply_state = NULL; |
| 2014 | } |
| 2015 | } |
| 2016 | |
| 2017 | LASSERT(rc != 0 || |
| 2018 | (req->rq_reply_state && req->rq_reply_state->rs_msg)); |
| 2019 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 2020 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2021 | } |
| 2022 | |
| 2023 | /** |
| 2024 | * Used by ptlrpc server, to perform transformation upon reply message. |
| 2025 | * |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 2026 | * \post req->rq_reply_off is set to appropriate server-controlled reply offset. |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2027 | * \post req->rq_repmsg and req->rq_reply_state->rs_msg becomes inaccessible. |
| 2028 | */ |
| 2029 | int sptlrpc_svc_wrap_reply(struct ptlrpc_request *req) |
| 2030 | { |
| 2031 | struct ptlrpc_sec_policy *policy; |
| 2032 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2033 | |
| 2034 | LASSERT(req->rq_svc_ctx); |
| 2035 | LASSERT(req->rq_svc_ctx->sc_policy); |
| 2036 | |
| 2037 | policy = req->rq_svc_ctx->sc_policy; |
| 2038 | LASSERT(policy->sp_sops->authorize); |
| 2039 | |
| 2040 | rc = policy->sp_sops->authorize(req); |
| 2041 | LASSERT(rc || req->rq_reply_state->rs_repdata_len); |
| 2042 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 2043 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2044 | } |
| 2045 | |
| 2046 | /** |
| 2047 | * Used by ptlrpc server, to free reply_state. |
| 2048 | */ |
| 2049 | void sptlrpc_svc_free_rs(struct ptlrpc_reply_state *rs) |
| 2050 | { |
| 2051 | struct ptlrpc_sec_policy *policy; |
| 2052 | unsigned int prealloc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2053 | |
| 2054 | LASSERT(rs->rs_svc_ctx); |
| 2055 | LASSERT(rs->rs_svc_ctx->sc_policy); |
| 2056 | |
| 2057 | policy = rs->rs_svc_ctx->sc_policy; |
| 2058 | LASSERT(policy->sp_sops->free_rs); |
| 2059 | |
| 2060 | prealloc = rs->rs_prealloc; |
| 2061 | policy->sp_sops->free_rs(rs); |
| 2062 | |
| 2063 | if (prealloc) |
| 2064 | lustre_put_emerg_rs(rs); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2065 | } |
| 2066 | |
| 2067 | void sptlrpc_svc_ctx_addref(struct ptlrpc_request *req) |
| 2068 | { |
| 2069 | struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx; |
| 2070 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 2071 | if (ctx) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2072 | atomic_inc(&ctx->sc_refcount); |
| 2073 | } |
| 2074 | |
| 2075 | void sptlrpc_svc_ctx_decref(struct ptlrpc_request *req) |
| 2076 | { |
| 2077 | struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx; |
| 2078 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 2079 | if (!ctx) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2080 | return; |
| 2081 | |
| 2082 | LASSERT_ATOMIC_POS(&ctx->sc_refcount); |
| 2083 | if (atomic_dec_and_test(&ctx->sc_refcount)) { |
| 2084 | if (ctx->sc_policy->sp_sops->free_ctx) |
| 2085 | ctx->sc_policy->sp_sops->free_ctx(ctx); |
| 2086 | } |
| 2087 | req->rq_svc_ctx = NULL; |
| 2088 | } |
| 2089 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2090 | /**************************************** |
| 2091 | * bulk security * |
| 2092 | ****************************************/ |
| 2093 | |
| 2094 | /** |
| 2095 | * Perform transformation upon bulk data pointed by \a desc. This is called |
| 2096 | * before transforming the request message. |
| 2097 | */ |
| 2098 | int sptlrpc_cli_wrap_bulk(struct ptlrpc_request *req, |
| 2099 | struct ptlrpc_bulk_desc *desc) |
| 2100 | { |
| 2101 | struct ptlrpc_cli_ctx *ctx; |
| 2102 | |
| 2103 | LASSERT(req->rq_bulk_read || req->rq_bulk_write); |
| 2104 | |
| 2105 | if (!req->rq_pack_bulk) |
| 2106 | return 0; |
| 2107 | |
| 2108 | ctx = req->rq_cli_ctx; |
| 2109 | if (ctx->cc_ops->wrap_bulk) |
| 2110 | return ctx->cc_ops->wrap_bulk(ctx, req, desc); |
| 2111 | return 0; |
| 2112 | } |
| 2113 | EXPORT_SYMBOL(sptlrpc_cli_wrap_bulk); |
| 2114 | |
| 2115 | /** |
| 2116 | * This is called after unwrap the reply message. |
| 2117 | * return nob of actual plain text size received, or error code. |
| 2118 | */ |
| 2119 | int sptlrpc_cli_unwrap_bulk_read(struct ptlrpc_request *req, |
| 2120 | struct ptlrpc_bulk_desc *desc, |
| 2121 | int nob) |
| 2122 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 2123 | struct ptlrpc_cli_ctx *ctx; |
| 2124 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2125 | |
| 2126 | LASSERT(req->rq_bulk_read && !req->rq_bulk_write); |
| 2127 | |
| 2128 | if (!req->rq_pack_bulk) |
| 2129 | return desc->bd_nob_transferred; |
| 2130 | |
| 2131 | ctx = req->rq_cli_ctx; |
| 2132 | if (ctx->cc_ops->unwrap_bulk) { |
| 2133 | rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc); |
| 2134 | if (rc < 0) |
| 2135 | return rc; |
| 2136 | } |
| 2137 | return desc->bd_nob_transferred; |
| 2138 | } |
| 2139 | EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_read); |
| 2140 | |
| 2141 | /** |
| 2142 | * This is called after unwrap the reply message. |
| 2143 | * return 0 for success or error code. |
| 2144 | */ |
| 2145 | int sptlrpc_cli_unwrap_bulk_write(struct ptlrpc_request *req, |
| 2146 | struct ptlrpc_bulk_desc *desc) |
| 2147 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 2148 | struct ptlrpc_cli_ctx *ctx; |
| 2149 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2150 | |
| 2151 | LASSERT(!req->rq_bulk_read && req->rq_bulk_write); |
| 2152 | |
| 2153 | if (!req->rq_pack_bulk) |
| 2154 | return 0; |
| 2155 | |
| 2156 | ctx = req->rq_cli_ctx; |
| 2157 | if (ctx->cc_ops->unwrap_bulk) { |
| 2158 | rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc); |
| 2159 | if (rc < 0) |
| 2160 | return rc; |
| 2161 | } |
| 2162 | |
| 2163 | /* |
| 2164 | * if everything is going right, nob should equals to nob_transferred. |
| 2165 | * in case of privacy mode, nob_transferred needs to be adjusted. |
| 2166 | */ |
| 2167 | if (desc->bd_nob != desc->bd_nob_transferred) { |
James Nunez | 19b2056 | 2016-03-07 18:10:21 -0500 | [diff] [blame] | 2168 | CERROR("nob %d doesn't match transferred nob %d\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2169 | desc->bd_nob, desc->bd_nob_transferred); |
| 2170 | return -EPROTO; |
| 2171 | } |
| 2172 | |
| 2173 | return 0; |
| 2174 | } |
| 2175 | EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_write); |
| 2176 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2177 | /**************************************** |
| 2178 | * user descriptor helpers * |
| 2179 | ****************************************/ |
| 2180 | |
| 2181 | int sptlrpc_current_user_desc_size(void) |
| 2182 | { |
| 2183 | int ngroups; |
| 2184 | |
| 2185 | ngroups = current_ngroups; |
| 2186 | |
| 2187 | if (ngroups > LUSTRE_MAX_GROUPS) |
| 2188 | ngroups = LUSTRE_MAX_GROUPS; |
| 2189 | return sptlrpc_user_desc_size(ngroups); |
| 2190 | } |
| 2191 | EXPORT_SYMBOL(sptlrpc_current_user_desc_size); |
| 2192 | |
| 2193 | int sptlrpc_pack_user_desc(struct lustre_msg *msg, int offset) |
| 2194 | { |
| 2195 | struct ptlrpc_user_desc *pud; |
| 2196 | |
| 2197 | pud = lustre_msg_buf(msg, offset, 0); |
| 2198 | |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 2199 | pud->pud_uid = from_kuid(&init_user_ns, current_uid()); |
| 2200 | pud->pud_gid = from_kgid(&init_user_ns, current_gid()); |
| 2201 | pud->pud_fsuid = from_kuid(&init_user_ns, current_fsuid()); |
| 2202 | pud->pud_fsgid = from_kgid(&init_user_ns, current_fsgid()); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2203 | pud->pud_cap = cfs_curproc_cap_pack(); |
| 2204 | pud->pud_ngroups = (msg->lm_buflens[offset] - sizeof(*pud)) / 4; |
| 2205 | |
| 2206 | task_lock(current); |
| 2207 | if (pud->pud_ngroups > current_ngroups) |
| 2208 | pud->pud_ngroups = current_ngroups; |
| 2209 | memcpy(pud->pud_groups, current_cred()->group_info->blocks[0], |
| 2210 | pud->pud_ngroups * sizeof(__u32)); |
| 2211 | task_unlock(current); |
| 2212 | |
| 2213 | return 0; |
| 2214 | } |
| 2215 | EXPORT_SYMBOL(sptlrpc_pack_user_desc); |
| 2216 | |
| 2217 | int sptlrpc_unpack_user_desc(struct lustre_msg *msg, int offset, int swabbed) |
| 2218 | { |
| 2219 | struct ptlrpc_user_desc *pud; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 2220 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2221 | |
| 2222 | pud = lustre_msg_buf(msg, offset, sizeof(*pud)); |
| 2223 | if (!pud) |
| 2224 | return -EINVAL; |
| 2225 | |
| 2226 | if (swabbed) { |
| 2227 | __swab32s(&pud->pud_uid); |
| 2228 | __swab32s(&pud->pud_gid); |
| 2229 | __swab32s(&pud->pud_fsuid); |
| 2230 | __swab32s(&pud->pud_fsgid); |
| 2231 | __swab32s(&pud->pud_cap); |
| 2232 | __swab32s(&pud->pud_ngroups); |
| 2233 | } |
| 2234 | |
| 2235 | if (pud->pud_ngroups > LUSTRE_MAX_GROUPS) { |
| 2236 | CERROR("%u groups is too large\n", pud->pud_ngroups); |
| 2237 | return -EINVAL; |
| 2238 | } |
| 2239 | |
| 2240 | if (sizeof(*pud) + pud->pud_ngroups * sizeof(__u32) > |
| 2241 | msg->lm_buflens[offset]) { |
| 2242 | CERROR("%u groups are claimed but bufsize only %u\n", |
| 2243 | pud->pud_ngroups, msg->lm_buflens[offset]); |
| 2244 | return -EINVAL; |
| 2245 | } |
| 2246 | |
| 2247 | if (swabbed) { |
| 2248 | for (i = 0; i < pud->pud_ngroups; i++) |
| 2249 | __swab32s(&pud->pud_groups[i]); |
| 2250 | } |
| 2251 | |
| 2252 | return 0; |
| 2253 | } |
| 2254 | EXPORT_SYMBOL(sptlrpc_unpack_user_desc); |
| 2255 | |
| 2256 | /**************************************** |
| 2257 | * misc helpers * |
| 2258 | ****************************************/ |
| 2259 | |
Greg Donald | aff9d8e | 2014-08-21 11:07:42 -0500 | [diff] [blame] | 2260 | const char *sec2target_str(struct ptlrpc_sec *sec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2261 | { |
| 2262 | if (!sec || !sec->ps_import || !sec->ps_import->imp_obd) |
| 2263 | return "*"; |
| 2264 | if (sec_is_reverse(sec)) |
| 2265 | return "c"; |
| 2266 | return obd_uuid2str(&sec->ps_import->imp_obd->u.cli.cl_target_uuid); |
| 2267 | } |
| 2268 | EXPORT_SYMBOL(sec2target_str); |
| 2269 | |
| 2270 | /* |
| 2271 | * return true if the bulk data is protected |
| 2272 | */ |
Geliang Tang | 316bd5e | 2015-10-18 22:35:31 +0800 | [diff] [blame] | 2273 | bool sptlrpc_flavor_has_bulk(struct sptlrpc_flavor *flvr) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2274 | { |
| 2275 | switch (SPTLRPC_FLVR_BULK_SVC(flvr->sf_rpc)) { |
| 2276 | case SPTLRPC_BULK_SVC_INTG: |
| 2277 | case SPTLRPC_BULK_SVC_PRIV: |
Geliang Tang | 316bd5e | 2015-10-18 22:35:31 +0800 | [diff] [blame] | 2278 | return true; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2279 | default: |
Geliang Tang | 316bd5e | 2015-10-18 22:35:31 +0800 | [diff] [blame] | 2280 | return false; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2281 | } |
| 2282 | } |
| 2283 | EXPORT_SYMBOL(sptlrpc_flavor_has_bulk); |
| 2284 | |
| 2285 | /**************************************** |
| 2286 | * crypto API helper/alloc blkciper * |
| 2287 | ****************************************/ |
| 2288 | |
| 2289 | /**************************************** |
| 2290 | * initialize/finalize * |
| 2291 | ****************************************/ |
| 2292 | |
| 2293 | int sptlrpc_init(void) |
| 2294 | { |
| 2295 | int rc; |
| 2296 | |
| 2297 | rwlock_init(&policy_lock); |
| 2298 | |
| 2299 | rc = sptlrpc_gc_init(); |
| 2300 | if (rc) |
| 2301 | goto out; |
| 2302 | |
| 2303 | rc = sptlrpc_conf_init(); |
| 2304 | if (rc) |
| 2305 | goto out_gc; |
| 2306 | |
| 2307 | rc = sptlrpc_enc_pool_init(); |
| 2308 | if (rc) |
| 2309 | goto out_conf; |
| 2310 | |
| 2311 | rc = sptlrpc_null_init(); |
| 2312 | if (rc) |
| 2313 | goto out_pool; |
| 2314 | |
| 2315 | rc = sptlrpc_plain_init(); |
| 2316 | if (rc) |
| 2317 | goto out_null; |
| 2318 | |
| 2319 | rc = sptlrpc_lproc_init(); |
| 2320 | if (rc) |
| 2321 | goto out_plain; |
| 2322 | |
| 2323 | return 0; |
| 2324 | |
| 2325 | out_plain: |
| 2326 | sptlrpc_plain_fini(); |
| 2327 | out_null: |
| 2328 | sptlrpc_null_fini(); |
| 2329 | out_pool: |
| 2330 | sptlrpc_enc_pool_fini(); |
| 2331 | out_conf: |
| 2332 | sptlrpc_conf_fini(); |
| 2333 | out_gc: |
| 2334 | sptlrpc_gc_fini(); |
| 2335 | out: |
| 2336 | return rc; |
| 2337 | } |
| 2338 | |
| 2339 | void sptlrpc_fini(void) |
| 2340 | { |
| 2341 | sptlrpc_lproc_fini(); |
| 2342 | sptlrpc_plain_fini(); |
| 2343 | sptlrpc_null_fini(); |
| 2344 | sptlrpc_enc_pool_fini(); |
| 2345 | sptlrpc_conf_fini(); |
| 2346 | sptlrpc_gc_fini(); |
| 2347 | } |