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 |
Oleg Drokin | 6a5b99a | 2016-06-14 23:33:40 -0400 | [diff] [blame] | 18 | * http://www.gnu.org/licenses/gpl-2.0.html |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 19 | * |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 20 | * GPL HEADER END |
| 21 | */ |
| 22 | /* |
| 23 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
| 24 | * Use is subject to license terms. |
| 25 | * |
| 26 | * Copyright (c) 2011, 2012, Intel Corporation. |
| 27 | */ |
| 28 | /* |
| 29 | * This file is part of Lustre, http://www.lustre.org/ |
| 30 | * Lustre is a trademark of Sun Microsystems, Inc. |
| 31 | * |
| 32 | * lustre/ptlrpc/sec.c |
| 33 | * |
| 34 | * Author: Eric Mei <ericm@clusterfs.com> |
| 35 | */ |
| 36 | |
| 37 | #define DEBUG_SUBSYSTEM S_SEC |
| 38 | |
Greg Kroah-Hartman | 9fdaf8c | 2014-07-11 20:51:16 -0700 | [diff] [blame] | 39 | #include "../../include/linux/libcfs/libcfs.h" |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 40 | #include <linux/crypto.h> |
| 41 | #include <linux/key.h> |
| 42 | |
Greg Kroah-Hartman | e27db14 | 2014-07-11 22:29:36 -0700 | [diff] [blame] | 43 | #include "../include/obd.h" |
| 44 | #include "../include/obd_class.h" |
| 45 | #include "../include/obd_support.h" |
| 46 | #include "../include/lustre_net.h" |
| 47 | #include "../include/lustre_import.h" |
| 48 | #include "../include/lustre_dlm.h" |
| 49 | #include "../include/lustre_sec.h" |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 50 | |
| 51 | #include "ptlrpc_internal.h" |
| 52 | |
| 53 | /*********************************************** |
| 54 | * policy registers * |
| 55 | ***********************************************/ |
| 56 | |
| 57 | static rwlock_t policy_lock; |
| 58 | static struct ptlrpc_sec_policy *policies[SPTLRPC_POLICY_MAX] = { |
| 59 | NULL, |
| 60 | }; |
| 61 | |
| 62 | int sptlrpc_register_policy(struct ptlrpc_sec_policy *policy) |
| 63 | { |
| 64 | __u16 number = policy->sp_policy; |
| 65 | |
| 66 | LASSERT(policy->sp_name); |
| 67 | LASSERT(policy->sp_cops); |
| 68 | LASSERT(policy->sp_sops); |
| 69 | |
| 70 | if (number >= SPTLRPC_POLICY_MAX) |
| 71 | return -EINVAL; |
| 72 | |
| 73 | write_lock(&policy_lock); |
| 74 | if (unlikely(policies[number])) { |
| 75 | write_unlock(&policy_lock); |
| 76 | return -EALREADY; |
| 77 | } |
| 78 | policies[number] = policy; |
| 79 | write_unlock(&policy_lock); |
| 80 | |
| 81 | CDEBUG(D_SEC, "%s: registered\n", policy->sp_name); |
| 82 | return 0; |
| 83 | } |
| 84 | EXPORT_SYMBOL(sptlrpc_register_policy); |
| 85 | |
| 86 | int sptlrpc_unregister_policy(struct ptlrpc_sec_policy *policy) |
| 87 | { |
| 88 | __u16 number = policy->sp_policy; |
| 89 | |
| 90 | LASSERT(number < SPTLRPC_POLICY_MAX); |
| 91 | |
| 92 | write_lock(&policy_lock); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 93 | if (unlikely(!policies[number])) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 94 | write_unlock(&policy_lock); |
| 95 | CERROR("%s: already unregistered\n", policy->sp_name); |
| 96 | return -EINVAL; |
| 97 | } |
| 98 | |
| 99 | LASSERT(policies[number] == policy); |
| 100 | policies[number] = NULL; |
| 101 | write_unlock(&policy_lock); |
| 102 | |
| 103 | CDEBUG(D_SEC, "%s: unregistered\n", policy->sp_name); |
| 104 | return 0; |
| 105 | } |
| 106 | EXPORT_SYMBOL(sptlrpc_unregister_policy); |
| 107 | |
| 108 | static |
Greg Donald | aff9d8e | 2014-08-21 11:07:42 -0500 | [diff] [blame] | 109 | struct ptlrpc_sec_policy *sptlrpc_wireflavor2policy(__u32 flavor) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 110 | { |
| 111 | static DEFINE_MUTEX(load_mutex); |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 112 | static atomic_t loaded = ATOMIC_INIT(0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 113 | struct ptlrpc_sec_policy *policy; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 114 | __u16 number = SPTLRPC_FLVR_POLICY(flavor); |
| 115 | __u16 flag = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 116 | |
| 117 | if (number >= SPTLRPC_POLICY_MAX) |
| 118 | return NULL; |
| 119 | |
| 120 | while (1) { |
| 121 | read_lock(&policy_lock); |
| 122 | policy = policies[number]; |
| 123 | if (policy && !try_module_get(policy->sp_owner)) |
| 124 | policy = NULL; |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 125 | if (!policy) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 126 | flag = atomic_read(&loaded); |
| 127 | read_unlock(&policy_lock); |
| 128 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 129 | if (policy || flag != 0 || |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 130 | number != SPTLRPC_POLICY_GSS) |
| 131 | break; |
| 132 | |
| 133 | /* try to load gss module, once */ |
| 134 | mutex_lock(&load_mutex); |
| 135 | if (atomic_read(&loaded) == 0) { |
| 136 | if (request_module("ptlrpc_gss") == 0) |
| 137 | CDEBUG(D_SEC, |
| 138 | "module ptlrpc_gss loaded on demand\n"); |
| 139 | else |
| 140 | CERROR("Unable to load module ptlrpc_gss\n"); |
| 141 | |
| 142 | atomic_set(&loaded, 1); |
| 143 | } |
| 144 | mutex_unlock(&load_mutex); |
| 145 | } |
| 146 | |
| 147 | return policy; |
| 148 | } |
| 149 | |
| 150 | __u32 sptlrpc_name2flavor_base(const char *name) |
| 151 | { |
| 152 | if (!strcmp(name, "null")) |
| 153 | return SPTLRPC_FLVR_NULL; |
| 154 | if (!strcmp(name, "plain")) |
| 155 | return SPTLRPC_FLVR_PLAIN; |
| 156 | if (!strcmp(name, "krb5n")) |
| 157 | return SPTLRPC_FLVR_KRB5N; |
| 158 | if (!strcmp(name, "krb5a")) |
| 159 | return SPTLRPC_FLVR_KRB5A; |
| 160 | if (!strcmp(name, "krb5i")) |
| 161 | return SPTLRPC_FLVR_KRB5I; |
| 162 | if (!strcmp(name, "krb5p")) |
| 163 | return SPTLRPC_FLVR_KRB5P; |
| 164 | |
| 165 | return SPTLRPC_FLVR_INVALID; |
| 166 | } |
| 167 | EXPORT_SYMBOL(sptlrpc_name2flavor_base); |
| 168 | |
| 169 | const char *sptlrpc_flavor2name_base(__u32 flvr) |
| 170 | { |
| 171 | __u32 base = SPTLRPC_FLVR_BASE(flvr); |
| 172 | |
| 173 | if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL)) |
| 174 | return "null"; |
| 175 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_PLAIN)) |
| 176 | return "plain"; |
| 177 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5N)) |
| 178 | return "krb5n"; |
| 179 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5A)) |
| 180 | return "krb5a"; |
| 181 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5I)) |
| 182 | return "krb5i"; |
| 183 | else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5P)) |
| 184 | return "krb5p"; |
| 185 | |
| 186 | CERROR("invalid wire flavor 0x%x\n", flvr); |
| 187 | return "invalid"; |
| 188 | } |
| 189 | EXPORT_SYMBOL(sptlrpc_flavor2name_base); |
| 190 | |
| 191 | char *sptlrpc_flavor2name_bulk(struct sptlrpc_flavor *sf, |
| 192 | char *buf, int bufsize) |
| 193 | { |
| 194 | if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN) |
| 195 | snprintf(buf, bufsize, "hash:%s", |
| 196 | sptlrpc_get_hash_name(sf->u_bulk.hash.hash_alg)); |
| 197 | else |
| 198 | snprintf(buf, bufsize, "%s", |
| 199 | sptlrpc_flavor2name_base(sf->sf_rpc)); |
| 200 | |
| 201 | buf[bufsize - 1] = '\0'; |
| 202 | return buf; |
| 203 | } |
| 204 | EXPORT_SYMBOL(sptlrpc_flavor2name_bulk); |
| 205 | |
| 206 | char *sptlrpc_flavor2name(struct sptlrpc_flavor *sf, char *buf, int bufsize) |
| 207 | { |
Rickard Strandqvist | 22e1dd6 | 2014-10-12 17:55:33 +0200 | [diff] [blame] | 208 | strlcpy(buf, sptlrpc_flavor2name_base(sf->sf_rpc), bufsize); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 209 | |
| 210 | /* |
| 211 | * currently we don't support customized bulk specification for |
| 212 | * flavors other than plain |
| 213 | */ |
| 214 | if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN) { |
| 215 | char bspec[16]; |
| 216 | |
| 217 | bspec[0] = '-'; |
| 218 | sptlrpc_flavor2name_bulk(sf, &bspec[1], sizeof(bspec) - 1); |
Rickard Strandqvist | 22e1dd6 | 2014-10-12 17:55:33 +0200 | [diff] [blame] | 219 | strlcat(buf, bspec, bufsize); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 220 | } |
| 221 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 222 | return buf; |
| 223 | } |
| 224 | EXPORT_SYMBOL(sptlrpc_flavor2name); |
| 225 | |
Shraddha Barke | be23ce1 | 2015-10-05 05:32:39 +0530 | [diff] [blame] | 226 | static char *sptlrpc_secflags2str(__u32 flags, char *buf, int bufsize) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 227 | { |
| 228 | buf[0] = '\0'; |
| 229 | |
| 230 | if (flags & PTLRPC_SEC_FL_REVERSE) |
| 231 | strlcat(buf, "reverse,", bufsize); |
| 232 | if (flags & PTLRPC_SEC_FL_ROOTONLY) |
| 233 | strlcat(buf, "rootonly,", bufsize); |
| 234 | if (flags & PTLRPC_SEC_FL_UDESC) |
| 235 | strlcat(buf, "udesc,", bufsize); |
| 236 | if (flags & PTLRPC_SEC_FL_BULK) |
| 237 | strlcat(buf, "bulk,", bufsize); |
| 238 | if (buf[0] == '\0') |
| 239 | strlcat(buf, "-,", bufsize); |
| 240 | |
| 241 | return buf; |
| 242 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 243 | |
| 244 | /************************************************** |
| 245 | * client context APIs * |
| 246 | **************************************************/ |
| 247 | |
| 248 | static |
| 249 | struct ptlrpc_cli_ctx *get_my_ctx(struct ptlrpc_sec *sec) |
| 250 | { |
| 251 | struct vfs_cred vcred; |
| 252 | int create = 1, remove_dead = 1; |
| 253 | |
| 254 | LASSERT(sec); |
| 255 | LASSERT(sec->ps_policy->sp_cops->lookup_ctx); |
| 256 | |
| 257 | if (sec->ps_flvr.sf_flags & (PTLRPC_SEC_FL_REVERSE | |
| 258 | PTLRPC_SEC_FL_ROOTONLY)) { |
| 259 | vcred.vc_uid = 0; |
| 260 | vcred.vc_gid = 0; |
| 261 | if (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_REVERSE) { |
| 262 | create = 0; |
| 263 | remove_dead = 0; |
| 264 | } |
| 265 | } else { |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 266 | vcred.vc_uid = from_kuid(&init_user_ns, current_uid()); |
| 267 | vcred.vc_gid = from_kgid(&init_user_ns, current_gid()); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | return sec->ps_policy->sp_cops->lookup_ctx(sec, &vcred, |
| 271 | create, remove_dead); |
| 272 | } |
| 273 | |
| 274 | struct ptlrpc_cli_ctx *sptlrpc_cli_ctx_get(struct ptlrpc_cli_ctx *ctx) |
| 275 | { |
| 276 | atomic_inc(&ctx->cc_refcount); |
| 277 | return ctx; |
| 278 | } |
| 279 | EXPORT_SYMBOL(sptlrpc_cli_ctx_get); |
| 280 | |
| 281 | void sptlrpc_cli_ctx_put(struct ptlrpc_cli_ctx *ctx, int sync) |
| 282 | { |
| 283 | struct ptlrpc_sec *sec = ctx->cc_sec; |
| 284 | |
| 285 | LASSERT(sec); |
| 286 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 287 | |
| 288 | if (!atomic_dec_and_test(&ctx->cc_refcount)) |
| 289 | return; |
| 290 | |
| 291 | sec->ps_policy->sp_cops->release_ctx(sec, ctx, sync); |
| 292 | } |
| 293 | EXPORT_SYMBOL(sptlrpc_cli_ctx_put); |
| 294 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 295 | static int import_sec_check_expire(struct obd_import *imp) |
| 296 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 297 | int adapt = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 298 | |
| 299 | spin_lock(&imp->imp_lock); |
| 300 | if (imp->imp_sec_expire && |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 301 | imp->imp_sec_expire < ktime_get_real_seconds()) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 302 | adapt = 1; |
| 303 | imp->imp_sec_expire = 0; |
| 304 | } |
| 305 | spin_unlock(&imp->imp_lock); |
| 306 | |
| 307 | if (!adapt) |
| 308 | return 0; |
| 309 | |
| 310 | CDEBUG(D_SEC, "found delayed sec adapt expired, do it now\n"); |
Denis Pithon | 81fb955 | 2014-04-14 18:25:30 +0200 | [diff] [blame] | 311 | return sptlrpc_import_sec_adapt(imp, NULL, NULL); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 312 | } |
| 313 | |
Amir Shehata | d333597 | 2016-09-18 16:38:26 -0400 | [diff] [blame] | 314 | /** |
| 315 | * Get and validate the client side ptlrpc security facilities from |
| 316 | * \a imp. There is a race condition on client reconnect when the import is |
| 317 | * being destroyed while there are outstanding client bound requests. In |
| 318 | * this case do not output any error messages if import secuity is not |
| 319 | * found. |
| 320 | * |
| 321 | * \param[in] imp obd import associated with client |
| 322 | * \param[out] sec client side ptlrpc security |
| 323 | * |
| 324 | * \retval 0 if security retrieved successfully |
| 325 | * \retval -ve errno if there was a problem |
| 326 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 327 | static int import_sec_validate_get(struct obd_import *imp, |
| 328 | struct ptlrpc_sec **sec) |
| 329 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 330 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 331 | |
| 332 | if (unlikely(imp->imp_sec_expire)) { |
| 333 | rc = import_sec_check_expire(imp); |
| 334 | if (rc) |
| 335 | return rc; |
| 336 | } |
| 337 | |
| 338 | *sec = sptlrpc_import_sec_ref(imp); |
Amir Shehata | d333597 | 2016-09-18 16:38:26 -0400 | [diff] [blame] | 339 | /* Only output an error when the import is still active */ |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 340 | if (!*sec) { |
Amir Shehata | d333597 | 2016-09-18 16:38:26 -0400 | [diff] [blame] | 341 | if (list_empty(&imp->imp_zombie_chain)) |
| 342 | CERROR("import %p (%s) with no sec\n", |
| 343 | imp, ptlrpc_import_state_name(imp->imp_state)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 344 | return -EACCES; |
| 345 | } |
| 346 | |
| 347 | if (unlikely((*sec)->ps_dying)) { |
| 348 | CERROR("attempt to use dying sec %p\n", sec); |
| 349 | sptlrpc_sec_put(*sec); |
| 350 | return -EACCES; |
| 351 | } |
| 352 | |
| 353 | return 0; |
| 354 | } |
| 355 | |
| 356 | /** |
| 357 | * Given a \a req, find or allocate a appropriate context for it. |
| 358 | * \pre req->rq_cli_ctx == NULL. |
| 359 | * |
| 360 | * \retval 0 succeed, and req->rq_cli_ctx is set. |
| 361 | * \retval -ev error number, and req->rq_cli_ctx == NULL. |
| 362 | */ |
| 363 | int sptlrpc_req_get_ctx(struct ptlrpc_request *req) |
| 364 | { |
| 365 | struct obd_import *imp = req->rq_import; |
| 366 | struct ptlrpc_sec *sec; |
| 367 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 368 | |
| 369 | LASSERT(!req->rq_cli_ctx); |
| 370 | LASSERT(imp); |
| 371 | |
| 372 | rc = import_sec_validate_get(imp, &sec); |
| 373 | if (rc) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 374 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 375 | |
| 376 | req->rq_cli_ctx = get_my_ctx(sec); |
| 377 | |
| 378 | sptlrpc_sec_put(sec); |
| 379 | |
| 380 | if (!req->rq_cli_ctx) { |
| 381 | CERROR("req %p: fail to get context\n", req); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 382 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 383 | } |
| 384 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 385 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | /** |
| 389 | * Drop the context for \a req. |
| 390 | * \pre req->rq_cli_ctx != NULL. |
| 391 | * \post req->rq_cli_ctx == NULL. |
| 392 | * |
| 393 | * If \a sync == 0, this function should return quickly without sleep; |
| 394 | * otherwise it might trigger and wait for the whole process of sending |
| 395 | * an context-destroying rpc to server. |
| 396 | */ |
| 397 | void sptlrpc_req_put_ctx(struct ptlrpc_request *req, int sync) |
| 398 | { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 399 | LASSERT(req); |
| 400 | LASSERT(req->rq_cli_ctx); |
| 401 | |
| 402 | /* request might be asked to release earlier while still |
| 403 | * in the context waiting list. |
| 404 | */ |
| 405 | if (!list_empty(&req->rq_ctx_chain)) { |
| 406 | spin_lock(&req->rq_cli_ctx->cc_lock); |
| 407 | list_del_init(&req->rq_ctx_chain); |
| 408 | spin_unlock(&req->rq_cli_ctx->cc_lock); |
| 409 | } |
| 410 | |
| 411 | sptlrpc_cli_ctx_put(req->rq_cli_ctx, sync); |
| 412 | req->rq_cli_ctx = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 413 | } |
| 414 | |
| 415 | static |
| 416 | int sptlrpc_req_ctx_switch(struct ptlrpc_request *req, |
| 417 | struct ptlrpc_cli_ctx *oldctx, |
| 418 | struct ptlrpc_cli_ctx *newctx) |
| 419 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 420 | struct sptlrpc_flavor old_flvr; |
| 421 | char *reqmsg = NULL; /* to workaround old gcc */ |
| 422 | int reqmsg_size; |
| 423 | int rc = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 424 | |
| 425 | LASSERT(req->rq_reqmsg); |
| 426 | LASSERT(req->rq_reqlen); |
| 427 | LASSERT(req->rq_replen); |
| 428 | |
Joe Perches | 2d00bd1 | 2014-11-23 11:28:50 -0800 | [diff] [blame] | 429 | CDEBUG(D_SEC, "req %p: switch ctx %p(%u->%s) -> %p(%u->%s), switch sec %p(%s) -> %p(%s)\n", |
| 430 | req, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 431 | oldctx, oldctx->cc_vcred.vc_uid, sec2target_str(oldctx->cc_sec), |
| 432 | newctx, newctx->cc_vcred.vc_uid, sec2target_str(newctx->cc_sec), |
| 433 | oldctx->cc_sec, oldctx->cc_sec->ps_policy->sp_name, |
| 434 | newctx->cc_sec, newctx->cc_sec->ps_policy->sp_name); |
| 435 | |
| 436 | /* save flavor */ |
| 437 | old_flvr = req->rq_flvr; |
| 438 | |
| 439 | /* save request message */ |
| 440 | reqmsg_size = req->rq_reqlen; |
| 441 | if (reqmsg_size != 0) { |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 442 | reqmsg = libcfs_kvzalloc(reqmsg_size, GFP_NOFS); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 443 | if (!reqmsg) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 444 | return -ENOMEM; |
| 445 | memcpy(reqmsg, req->rq_reqmsg, reqmsg_size); |
| 446 | } |
| 447 | |
| 448 | /* release old req/rep buf */ |
| 449 | req->rq_cli_ctx = oldctx; |
| 450 | sptlrpc_cli_free_reqbuf(req); |
| 451 | sptlrpc_cli_free_repbuf(req); |
| 452 | req->rq_cli_ctx = newctx; |
| 453 | |
| 454 | /* recalculate the flavor */ |
| 455 | sptlrpc_req_set_flavor(req, 0); |
| 456 | |
| 457 | /* alloc new request buffer |
| 458 | * 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] | 459 | * rest procedure of ptlrpc |
| 460 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 461 | if (reqmsg_size != 0) { |
| 462 | rc = sptlrpc_cli_alloc_reqbuf(req, reqmsg_size); |
| 463 | if (!rc) { |
| 464 | LASSERT(req->rq_reqmsg); |
| 465 | memcpy(req->rq_reqmsg, reqmsg, reqmsg_size); |
| 466 | } else { |
| 467 | CWARN("failed to alloc reqbuf: %d\n", rc); |
| 468 | req->rq_flvr = old_flvr; |
| 469 | } |
| 470 | |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 471 | kvfree(reqmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 472 | } |
| 473 | return rc; |
| 474 | } |
| 475 | |
| 476 | /** |
| 477 | * If current context of \a req is dead somehow, e.g. we just switched flavor |
| 478 | * thus marked original contexts dead, we'll find a new context for it. if |
| 479 | * no switch is needed, \a req will end up with the same context. |
| 480 | * |
| 481 | * \note a request must have a context, to keep other parts of code happy. |
| 482 | * In any case of failure during the switching, we must restore the old one. |
| 483 | */ |
Shraddha Barke | cf0a7f9 | 2015-10-02 16:19:30 +0530 | [diff] [blame] | 484 | static int sptlrpc_req_replace_dead_ctx(struct ptlrpc_request *req) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 485 | { |
| 486 | struct ptlrpc_cli_ctx *oldctx = req->rq_cli_ctx; |
| 487 | struct ptlrpc_cli_ctx *newctx; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 488 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 489 | |
| 490 | LASSERT(oldctx); |
| 491 | |
| 492 | sptlrpc_cli_ctx_get(oldctx); |
| 493 | sptlrpc_req_put_ctx(req, 0); |
| 494 | |
| 495 | rc = sptlrpc_req_get_ctx(req); |
| 496 | if (unlikely(rc)) { |
| 497 | LASSERT(!req->rq_cli_ctx); |
| 498 | |
| 499 | /* restore old ctx */ |
| 500 | req->rq_cli_ctx = oldctx; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 501 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 502 | } |
| 503 | |
| 504 | newctx = req->rq_cli_ctx; |
| 505 | LASSERT(newctx); |
| 506 | |
| 507 | if (unlikely(newctx == oldctx && |
| 508 | test_bit(PTLRPC_CTX_DEAD_BIT, &oldctx->cc_flags))) { |
| 509 | /* |
| 510 | * still get the old dead ctx, usually means system too busy |
| 511 | */ |
| 512 | CDEBUG(D_SEC, |
| 513 | "ctx (%p, fl %lx) doesn't switch, relax a little bit\n", |
| 514 | newctx, newctx->cc_flags); |
| 515 | |
Peng Tao | 18fd5ba | 2014-03-18 21:05:55 +0800 | [diff] [blame] | 516 | set_current_state(TASK_INTERRUPTIBLE); |
Jian Yu | df3c30f | 2016-09-18 16:38:01 -0400 | [diff] [blame] | 517 | schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC)); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 518 | } else { |
| 519 | /* |
| 520 | * it's possible newctx == oldctx if we're switching |
| 521 | * subflavor with the same sec. |
| 522 | */ |
| 523 | rc = sptlrpc_req_ctx_switch(req, oldctx, newctx); |
| 524 | if (rc) { |
| 525 | /* restore old ctx */ |
| 526 | sptlrpc_req_put_ctx(req, 0); |
| 527 | req->rq_cli_ctx = oldctx; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 528 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 529 | } |
| 530 | |
| 531 | LASSERT(req->rq_cli_ctx == newctx); |
| 532 | } |
| 533 | |
| 534 | sptlrpc_cli_ctx_put(oldctx, 1); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 535 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 536 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 537 | |
| 538 | static |
| 539 | int ctx_check_refresh(struct ptlrpc_cli_ctx *ctx) |
| 540 | { |
| 541 | if (cli_ctx_is_refreshed(ctx)) |
| 542 | return 1; |
| 543 | return 0; |
| 544 | } |
| 545 | |
| 546 | static |
| 547 | int ctx_refresh_timeout(void *data) |
| 548 | { |
| 549 | struct ptlrpc_request *req = data; |
| 550 | int rc; |
| 551 | |
| 552 | /* conn_cnt is needed in expire_one_request */ |
| 553 | lustre_msg_set_conn_cnt(req->rq_reqmsg, req->rq_import->imp_conn_cnt); |
| 554 | |
| 555 | rc = ptlrpc_expire_one_request(req, 1); |
| 556 | /* if we started recovery, we should mark this ctx dead; otherwise |
| 557 | * in case of lgssd died nobody would retire this ctx, following |
| 558 | * connecting will still find the same ctx thus cause deadlock. |
| 559 | * there's an assumption that expire time of the request should be |
| 560 | * later than the context refresh expire time. |
| 561 | */ |
| 562 | if (rc == 0) |
Chen Gang | d0f17b6 | 2014-07-14 19:59:13 +0800 | [diff] [blame] | 563 | 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] | 564 | return rc; |
| 565 | } |
| 566 | |
| 567 | static |
| 568 | void ctx_refresh_interrupt(void *data) |
| 569 | { |
| 570 | struct ptlrpc_request *req = data; |
| 571 | |
| 572 | spin_lock(&req->rq_lock); |
| 573 | req->rq_intr = 1; |
| 574 | spin_unlock(&req->rq_lock); |
| 575 | } |
| 576 | |
| 577 | static |
| 578 | void req_off_ctx_list(struct ptlrpc_request *req, struct ptlrpc_cli_ctx *ctx) |
| 579 | { |
| 580 | spin_lock(&ctx->cc_lock); |
| 581 | if (!list_empty(&req->rq_ctx_chain)) |
| 582 | list_del_init(&req->rq_ctx_chain); |
| 583 | spin_unlock(&ctx->cc_lock); |
| 584 | } |
| 585 | |
| 586 | /** |
| 587 | * To refresh the context of \req, if it's not up-to-date. |
| 588 | * \param timeout |
| 589 | * - < 0: don't wait |
| 590 | * - = 0: wait until success or fatal error occur |
| 591 | * - > 0: timeout value (in seconds) |
| 592 | * |
| 593 | * The status of the context could be subject to be changed by other threads |
| 594 | * at any time. We allow this race, but once we return with 0, the caller will |
| 595 | * suppose it's uptodated and keep using it until the owning rpc is done. |
| 596 | * |
| 597 | * \retval 0 only if the context is uptodated. |
| 598 | * \retval -ev error number. |
| 599 | */ |
| 600 | int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout) |
| 601 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 602 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 603 | struct ptlrpc_sec *sec; |
| 604 | struct l_wait_info lwi; |
| 605 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 606 | |
| 607 | LASSERT(ctx); |
| 608 | |
| 609 | if (req->rq_ctx_init || req->rq_ctx_fini) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 610 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 611 | |
| 612 | /* |
| 613 | * during the process a request's context might change type even |
| 614 | * (e.g. from gss ctx to null ctx), so each loop we need to re-check |
| 615 | * everything |
| 616 | */ |
| 617 | again: |
| 618 | rc = import_sec_validate_get(req->rq_import, &sec); |
| 619 | if (rc) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 620 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 621 | |
| 622 | if (sec->ps_flvr.sf_rpc != req->rq_flvr.sf_rpc) { |
| 623 | CDEBUG(D_SEC, "req %p: flavor has changed %x -> %x\n", |
Oleg Drokin | 30c0aa3 | 2016-02-26 01:50:02 -0500 | [diff] [blame] | 624 | req, req->rq_flvr.sf_rpc, sec->ps_flvr.sf_rpc); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 625 | req_off_ctx_list(req, ctx); |
| 626 | sptlrpc_req_replace_dead_ctx(req); |
| 627 | ctx = req->rq_cli_ctx; |
| 628 | } |
| 629 | sptlrpc_sec_put(sec); |
| 630 | |
| 631 | if (cli_ctx_is_eternal(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 | if (unlikely(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags))) { |
| 635 | LASSERT(ctx->cc_ops->refresh); |
| 636 | ctx->cc_ops->refresh(ctx); |
| 637 | } |
| 638 | LASSERT(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags) == 0); |
| 639 | |
| 640 | LASSERT(ctx->cc_ops->validate); |
| 641 | if (ctx->cc_ops->validate(ctx) == 0) { |
| 642 | req_off_ctx_list(req, ctx); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 643 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 644 | } |
| 645 | |
| 646 | if (unlikely(test_bit(PTLRPC_CTX_ERROR_BIT, &ctx->cc_flags))) { |
| 647 | spin_lock(&req->rq_lock); |
| 648 | req->rq_err = 1; |
| 649 | spin_unlock(&req->rq_lock); |
| 650 | req_off_ctx_list(req, ctx); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 651 | return -EPERM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | /* |
| 655 | * There's a subtle issue for resending RPCs, suppose following |
| 656 | * situation: |
| 657 | * 1. the request was sent to server. |
| 658 | * 2. recovery was kicked start, after finished the request was |
| 659 | * marked as resent. |
| 660 | * 3. resend the request. |
| 661 | * 4. old reply from server received, we accept and verify the reply. |
| 662 | * this has to be success, otherwise the error will be aware |
| 663 | * by application. |
| 664 | * 5. new reply from server received, dropped by LNet. |
| 665 | * |
| 666 | * Note the xid of old & new request is the same. We can't simply |
| 667 | * change xid for the resent request because the server replies on |
| 668 | * it for reply reconstruction. |
| 669 | * |
| 670 | * Commonly the original context should be uptodate because we |
| 671 | * have a expiry nice time; server will keep its context because |
| 672 | * we at least hold a ref of old context which prevent context |
| 673 | * destroying RPC being sent. So server still can accept the request |
| 674 | * and finish the RPC. But if that's not the case: |
| 675 | * 1. If server side context has been trimmed, a NO_CONTEXT will |
| 676 | * be returned, gss_cli_ctx_verify/unseal will switch to new |
| 677 | * context by force. |
| 678 | * 2. Current context never be refreshed, then we are fine: we |
| 679 | * never really send request with old context before. |
| 680 | */ |
| 681 | if (test_bit(PTLRPC_CTX_UPTODATE_BIT, &ctx->cc_flags) && |
| 682 | unlikely(req->rq_reqmsg) && |
| 683 | lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { |
| 684 | req_off_ctx_list(req, ctx); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 685 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | if (unlikely(test_bit(PTLRPC_CTX_DEAD_BIT, &ctx->cc_flags))) { |
| 689 | req_off_ctx_list(req, ctx); |
| 690 | /* |
| 691 | * don't switch ctx if import was deactivated |
| 692 | */ |
| 693 | if (req->rq_import->imp_deactive) { |
| 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 -EINTR; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | rc = sptlrpc_req_replace_dead_ctx(req); |
| 701 | if (rc) { |
| 702 | LASSERT(ctx == req->rq_cli_ctx); |
| 703 | CERROR("req %p: failed to replace dead ctx %p: %d\n", |
| 704 | req, ctx, rc); |
| 705 | spin_lock(&req->rq_lock); |
| 706 | req->rq_err = 1; |
| 707 | spin_unlock(&req->rq_lock); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 708 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 709 | } |
| 710 | |
| 711 | ctx = req->rq_cli_ctx; |
| 712 | goto again; |
| 713 | } |
| 714 | |
| 715 | /* |
| 716 | * Now we're sure this context is during upcall, add myself into |
| 717 | * waiting list |
| 718 | */ |
| 719 | spin_lock(&ctx->cc_lock); |
| 720 | if (list_empty(&req->rq_ctx_chain)) |
| 721 | list_add(&req->rq_ctx_chain, &ctx->cc_req_list); |
| 722 | spin_unlock(&ctx->cc_lock); |
| 723 | |
| 724 | if (timeout < 0) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 725 | return -EWOULDBLOCK; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 726 | |
| 727 | /* Clear any flags that may be present from previous sends */ |
| 728 | LASSERT(req->rq_receiving_reply == 0); |
| 729 | spin_lock(&req->rq_lock); |
| 730 | req->rq_err = 0; |
| 731 | req->rq_timedout = 0; |
| 732 | req->rq_resend = 0; |
| 733 | req->rq_restart = 0; |
| 734 | spin_unlock(&req->rq_lock); |
| 735 | |
Jian Yu | df3c30f | 2016-09-18 16:38:01 -0400 | [diff] [blame] | 736 | lwi = LWI_TIMEOUT_INTR(msecs_to_jiffies(timeout * MSEC_PER_SEC), |
| 737 | ctx_refresh_timeout, ctx_refresh_interrupt, |
| 738 | req); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 739 | rc = l_wait_event(req->rq_reply_waitq, ctx_check_refresh(ctx), &lwi); |
| 740 | |
| 741 | /* |
| 742 | * following cases could lead us here: |
| 743 | * - successfully refreshed; |
| 744 | * - interrupted; |
| 745 | * - timedout, and we don't want recover from the failure; |
| 746 | * - timedout, and waked up upon recovery finished; |
| 747 | * - someone else mark this ctx dead by force; |
| 748 | * - someone invalidate the req and call ptlrpc_client_wake_req(), |
| 749 | * e.g. ptlrpc_abort_inflight(); |
| 750 | */ |
| 751 | if (!cli_ctx_is_refreshed(ctx)) { |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 752 | /* timed out or interrupted */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 753 | req_off_ctx_list(req, ctx); |
| 754 | |
| 755 | LASSERT(rc != 0); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 756 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 757 | } |
| 758 | |
| 759 | goto again; |
| 760 | } |
| 761 | |
| 762 | /** |
| 763 | * Initialize flavor settings for \a req, according to \a opcode. |
| 764 | * |
| 765 | * \note this could be called in two situations: |
| 766 | * - new request from ptlrpc_pre_req(), with proper @opcode |
| 767 | * - old request which changed ctx in the middle, with @opcode == 0 |
| 768 | */ |
| 769 | void sptlrpc_req_set_flavor(struct ptlrpc_request *req, int opcode) |
| 770 | { |
| 771 | struct ptlrpc_sec *sec; |
| 772 | |
| 773 | LASSERT(req->rq_import); |
| 774 | LASSERT(req->rq_cli_ctx); |
| 775 | LASSERT(req->rq_cli_ctx->cc_sec); |
| 776 | LASSERT(req->rq_bulk_read == 0 || req->rq_bulk_write == 0); |
| 777 | |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 778 | /* special security flags according to opcode */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 779 | switch (opcode) { |
| 780 | case OST_READ: |
| 781 | case MDS_READPAGE: |
| 782 | case MGS_CONFIG_READ: |
| 783 | case OBD_IDX_READ: |
| 784 | req->rq_bulk_read = 1; |
| 785 | break; |
| 786 | case OST_WRITE: |
| 787 | case MDS_WRITEPAGE: |
| 788 | req->rq_bulk_write = 1; |
| 789 | break; |
| 790 | case SEC_CTX_INIT: |
| 791 | req->rq_ctx_init = 1; |
| 792 | break; |
| 793 | case SEC_CTX_FINI: |
| 794 | req->rq_ctx_fini = 1; |
| 795 | break; |
| 796 | case 0: |
| 797 | /* init/fini rpc won't be resend, so can't be here */ |
| 798 | LASSERT(req->rq_ctx_init == 0); |
| 799 | LASSERT(req->rq_ctx_fini == 0); |
| 800 | |
| 801 | /* cleanup flags, which should be recalculated */ |
| 802 | req->rq_pack_udesc = 0; |
| 803 | req->rq_pack_bulk = 0; |
| 804 | break; |
| 805 | } |
| 806 | |
| 807 | sec = req->rq_cli_ctx->cc_sec; |
| 808 | |
| 809 | spin_lock(&sec->ps_lock); |
| 810 | req->rq_flvr = sec->ps_flvr; |
| 811 | spin_unlock(&sec->ps_lock); |
| 812 | |
| 813 | /* force SVC_NULL for context initiation rpc, SVC_INTG for context |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 814 | * destruction rpc |
| 815 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 816 | if (unlikely(req->rq_ctx_init)) |
| 817 | flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_NULL); |
| 818 | else if (unlikely(req->rq_ctx_fini)) |
| 819 | flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_INTG); |
| 820 | |
| 821 | /* user descriptor flag, null security can't do it anyway */ |
| 822 | if ((sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_UDESC) && |
| 823 | (req->rq_flvr.sf_rpc != SPTLRPC_FLVR_NULL)) |
| 824 | req->rq_pack_udesc = 1; |
| 825 | |
| 826 | /* bulk security flag */ |
| 827 | if ((req->rq_bulk_read || req->rq_bulk_write) && |
| 828 | sptlrpc_flavor_has_bulk(&req->rq_flvr)) |
| 829 | req->rq_pack_bulk = 1; |
| 830 | } |
| 831 | |
| 832 | void sptlrpc_request_out_callback(struct ptlrpc_request *req) |
| 833 | { |
| 834 | if (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc) != SPTLRPC_SVC_PRIV) |
| 835 | return; |
| 836 | |
| 837 | LASSERT(req->rq_clrbuf); |
| 838 | if (req->rq_pool || !req->rq_reqbuf) |
| 839 | return; |
| 840 | |
Julia Lawall | 9ae1059 | 2015-05-01 17:51:12 +0200 | [diff] [blame] | 841 | kfree(req->rq_reqbuf); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 842 | req->rq_reqbuf = NULL; |
| 843 | req->rq_reqbuf_len = 0; |
| 844 | } |
| 845 | |
| 846 | /** |
| 847 | * Given an import \a imp, check whether current user has a valid context |
| 848 | * or not. We may create a new context and try to refresh it, and try |
| 849 | * repeatedly try in case of non-fatal errors. Return 0 means success. |
| 850 | */ |
| 851 | int sptlrpc_import_check_ctx(struct obd_import *imp) |
| 852 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 853 | struct ptlrpc_sec *sec; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 854 | struct ptlrpc_cli_ctx *ctx; |
| 855 | struct ptlrpc_request *req = NULL; |
| 856 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 857 | |
| 858 | might_sleep(); |
| 859 | |
| 860 | sec = sptlrpc_import_sec_ref(imp); |
| 861 | ctx = get_my_ctx(sec); |
| 862 | sptlrpc_sec_put(sec); |
| 863 | |
| 864 | if (!ctx) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 865 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 866 | |
| 867 | if (cli_ctx_is_eternal(ctx) || |
| 868 | ctx->cc_ops->validate(ctx) == 0) { |
| 869 | sptlrpc_cli_ctx_put(ctx, 1); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 870 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 871 | } |
| 872 | |
| 873 | if (cli_ctx_is_error(ctx)) { |
| 874 | sptlrpc_cli_ctx_put(ctx, 1); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 875 | return -EACCES; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 876 | } |
| 877 | |
Ann Koehler | 0be19af | 2014-04-27 13:06:36 -0400 | [diff] [blame] | 878 | req = ptlrpc_request_cache_alloc(GFP_NOFS); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 879 | if (!req) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 880 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 881 | |
Liang Zhen | 32c8728 | 2016-06-20 16:55:30 -0400 | [diff] [blame] | 882 | ptlrpc_cli_req_init(req); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 883 | atomic_set(&req->rq_refcount, 10000); |
Liang Zhen | 32c8728 | 2016-06-20 16:55:30 -0400 | [diff] [blame] | 884 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 885 | req->rq_import = imp; |
| 886 | req->rq_flvr = sec->ps_flvr; |
| 887 | req->rq_cli_ctx = ctx; |
| 888 | |
| 889 | rc = sptlrpc_req_refresh_ctx(req, 0); |
| 890 | LASSERT(list_empty(&req->rq_ctx_chain)); |
| 891 | sptlrpc_cli_ctx_put(req->rq_cli_ctx, 1); |
Andriy Skulysh | 35b2e1b | 2014-04-27 13:06:35 -0400 | [diff] [blame] | 892 | ptlrpc_request_cache_free(req); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 893 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 894 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 895 | } |
| 896 | |
| 897 | /** |
| 898 | * Used by ptlrpc client, to perform the pre-defined security transformation |
| 899 | * upon the request message of \a req. After this function called, |
| 900 | * req->rq_reqmsg is still accessible as clear text. |
| 901 | */ |
| 902 | int sptlrpc_cli_wrap_request(struct ptlrpc_request *req) |
| 903 | { |
| 904 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 905 | int rc = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 906 | |
| 907 | LASSERT(ctx); |
| 908 | LASSERT(ctx->cc_sec); |
| 909 | LASSERT(req->rq_reqbuf || req->rq_clrbuf); |
| 910 | |
| 911 | /* we wrap bulk request here because now we can be sure |
| 912 | * the context is uptodate. |
| 913 | */ |
| 914 | if (req->rq_bulk) { |
| 915 | rc = sptlrpc_cli_wrap_bulk(req, req->rq_bulk); |
| 916 | if (rc) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 917 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 918 | } |
| 919 | |
| 920 | switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) { |
| 921 | case SPTLRPC_SVC_NULL: |
| 922 | case SPTLRPC_SVC_AUTH: |
| 923 | case SPTLRPC_SVC_INTG: |
| 924 | LASSERT(ctx->cc_ops->sign); |
| 925 | rc = ctx->cc_ops->sign(ctx, req); |
| 926 | break; |
| 927 | case SPTLRPC_SVC_PRIV: |
| 928 | LASSERT(ctx->cc_ops->seal); |
| 929 | rc = ctx->cc_ops->seal(ctx, req); |
| 930 | break; |
| 931 | default: |
| 932 | LBUG(); |
| 933 | } |
| 934 | |
| 935 | if (rc == 0) { |
| 936 | LASSERT(req->rq_reqdata_len); |
| 937 | LASSERT(req->rq_reqdata_len % 8 == 0); |
| 938 | LASSERT(req->rq_reqdata_len <= req->rq_reqbuf_len); |
| 939 | } |
| 940 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 941 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 942 | } |
| 943 | |
| 944 | static int do_cli_unwrap_reply(struct ptlrpc_request *req) |
| 945 | { |
| 946 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 947 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 948 | |
| 949 | LASSERT(ctx); |
| 950 | LASSERT(ctx->cc_sec); |
| 951 | LASSERT(req->rq_repbuf); |
| 952 | LASSERT(req->rq_repdata); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 953 | LASSERT(!req->rq_repmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 954 | |
| 955 | req->rq_rep_swab_mask = 0; |
| 956 | |
| 957 | rc = __lustre_unpack_msg(req->rq_repdata, req->rq_repdata_len); |
| 958 | switch (rc) { |
| 959 | case 1: |
| 960 | lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF); |
| 961 | case 0: |
| 962 | break; |
| 963 | default: |
Greg Kroah-Hartman | b0f5aad | 2014-07-12 20:06:04 -0700 | [diff] [blame] | 964 | CERROR("failed unpack reply: x%llu\n", req->rq_xid); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 965 | return -EPROTO; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 966 | } |
| 967 | |
| 968 | if (req->rq_repdata_len < sizeof(struct lustre_msg)) { |
| 969 | CERROR("replied data length %d too small\n", |
| 970 | req->rq_repdata_len); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 971 | return -EPROTO; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 972 | } |
| 973 | |
| 974 | if (SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr) != |
| 975 | SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc)) { |
| 976 | CERROR("reply policy %u doesn't match request policy %u\n", |
| 977 | SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr), |
| 978 | SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc)); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 979 | return -EPROTO; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 980 | } |
| 981 | |
| 982 | switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) { |
| 983 | case SPTLRPC_SVC_NULL: |
| 984 | case SPTLRPC_SVC_AUTH: |
| 985 | case SPTLRPC_SVC_INTG: |
| 986 | LASSERT(ctx->cc_ops->verify); |
| 987 | rc = ctx->cc_ops->verify(ctx, req); |
| 988 | break; |
| 989 | case SPTLRPC_SVC_PRIV: |
| 990 | LASSERT(ctx->cc_ops->unseal); |
| 991 | rc = ctx->cc_ops->unseal(ctx, req); |
| 992 | break; |
| 993 | default: |
| 994 | LBUG(); |
| 995 | } |
| 996 | LASSERT(rc || req->rq_repmsg || req->rq_resend); |
| 997 | |
| 998 | if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL && |
| 999 | !req->rq_ctx_init) |
| 1000 | req->rq_rep_swab_mask = 0; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1001 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1002 | } |
| 1003 | |
| 1004 | /** |
| 1005 | * Used by ptlrpc client, to perform security transformation upon the reply |
| 1006 | * message of \a req. After return successfully, req->rq_repmsg points to |
| 1007 | * the reply message in clear text. |
| 1008 | * |
| 1009 | * \pre the reply buffer should have been un-posted from LNet, so nothing is |
| 1010 | * going to change. |
| 1011 | */ |
| 1012 | int sptlrpc_cli_unwrap_reply(struct ptlrpc_request *req) |
| 1013 | { |
| 1014 | LASSERT(req->rq_repbuf); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1015 | LASSERT(!req->rq_repdata); |
| 1016 | LASSERT(!req->rq_repmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1017 | LASSERT(req->rq_reply_off + req->rq_nob_received <= req->rq_repbuf_len); |
| 1018 | |
| 1019 | if (req->rq_reply_off == 0 && |
| 1020 | (lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)) { |
| 1021 | CERROR("real reply with offset 0\n"); |
| 1022 | return -EPROTO; |
| 1023 | } |
| 1024 | |
| 1025 | if (req->rq_reply_off % 8 != 0) { |
| 1026 | CERROR("reply at odd offset %u\n", req->rq_reply_off); |
| 1027 | return -EPROTO; |
| 1028 | } |
| 1029 | |
| 1030 | req->rq_repdata = (struct lustre_msg *) |
| 1031 | (req->rq_repbuf + req->rq_reply_off); |
| 1032 | req->rq_repdata_len = req->rq_nob_received; |
| 1033 | |
| 1034 | return do_cli_unwrap_reply(req); |
| 1035 | } |
| 1036 | |
| 1037 | /** |
| 1038 | * Used by ptlrpc client, to perform security transformation upon the early |
| 1039 | * reply message of \a req. We expect the rq_reply_off is 0, and |
| 1040 | * rq_nob_received is the early reply size. |
| 1041 | * |
| 1042 | * Because the receive buffer might be still posted, the reply data might be |
| 1043 | * changed at any time, no matter we're holding rq_lock or not. For this reason |
| 1044 | * we allocate a separate ptlrpc_request and reply buffer for early reply |
| 1045 | * processing. |
| 1046 | * |
| 1047 | * \retval 0 success, \a req_ret is filled with a duplicated ptlrpc_request. |
| 1048 | * Later the caller must call sptlrpc_cli_finish_early_reply() on the returned |
| 1049 | * \a *req_ret to release it. |
| 1050 | * \retval -ev error number, and \a req_ret will not be set. |
| 1051 | */ |
| 1052 | int sptlrpc_cli_unwrap_early_reply(struct ptlrpc_request *req, |
| 1053 | struct ptlrpc_request **req_ret) |
| 1054 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1055 | struct ptlrpc_request *early_req; |
| 1056 | char *early_buf; |
| 1057 | int early_bufsz, early_size; |
| 1058 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1059 | |
Ann Koehler | 0be19af | 2014-04-27 13:06:36 -0400 | [diff] [blame] | 1060 | early_req = ptlrpc_request_cache_alloc(GFP_NOFS); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1061 | if (!early_req) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1062 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1063 | |
Liang Zhen | 32c8728 | 2016-06-20 16:55:30 -0400 | [diff] [blame] | 1064 | ptlrpc_cli_req_init(early_req); |
| 1065 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1066 | early_size = req->rq_nob_received; |
| 1067 | early_bufsz = size_roundup_power2(early_size); |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 1068 | early_buf = libcfs_kvzalloc(early_bufsz, GFP_NOFS); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1069 | if (!early_buf) { |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1070 | rc = -ENOMEM; |
| 1071 | goto err_req; |
| 1072 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1073 | |
| 1074 | /* sanity checkings and copy data out, do it inside spinlock */ |
| 1075 | spin_lock(&req->rq_lock); |
| 1076 | |
| 1077 | if (req->rq_replied) { |
| 1078 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1079 | rc = -EALREADY; |
| 1080 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1081 | } |
| 1082 | |
| 1083 | LASSERT(req->rq_repbuf); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1084 | LASSERT(!req->rq_repdata); |
| 1085 | LASSERT(!req->rq_repmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1086 | |
| 1087 | if (req->rq_reply_off != 0) { |
| 1088 | CERROR("early reply with offset %u\n", req->rq_reply_off); |
| 1089 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1090 | rc = -EPROTO; |
| 1091 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | if (req->rq_nob_received != early_size) { |
| 1095 | /* even another early arrived the size should be the same */ |
| 1096 | CERROR("data size has changed from %u to %u\n", |
| 1097 | early_size, req->rq_nob_received); |
| 1098 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1099 | rc = -EINVAL; |
| 1100 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1101 | } |
| 1102 | |
| 1103 | if (req->rq_nob_received < sizeof(struct lustre_msg)) { |
| 1104 | CERROR("early reply length %d too small\n", |
| 1105 | req->rq_nob_received); |
| 1106 | spin_unlock(&req->rq_lock); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1107 | rc = -EALREADY; |
| 1108 | goto err_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1109 | } |
| 1110 | |
| 1111 | memcpy(early_buf, req->rq_repbuf, early_size); |
| 1112 | spin_unlock(&req->rq_lock); |
| 1113 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1114 | early_req->rq_cli_ctx = sptlrpc_cli_ctx_get(req->rq_cli_ctx); |
| 1115 | early_req->rq_flvr = req->rq_flvr; |
| 1116 | early_req->rq_repbuf = early_buf; |
| 1117 | early_req->rq_repbuf_len = early_bufsz; |
Oleg Drokin | 9797fb0 | 2016-06-18 23:53:12 -0400 | [diff] [blame] | 1118 | early_req->rq_repdata = (struct lustre_msg *)early_buf; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1119 | early_req->rq_repdata_len = early_size; |
| 1120 | early_req->rq_early = 1; |
| 1121 | early_req->rq_reqmsg = req->rq_reqmsg; |
| 1122 | |
| 1123 | rc = do_cli_unwrap_reply(early_req); |
| 1124 | if (rc) { |
| 1125 | DEBUG_REQ(D_ADAPTTO, early_req, |
| 1126 | "error %d unwrap early reply", rc); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1127 | goto err_ctx; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1128 | } |
| 1129 | |
| 1130 | LASSERT(early_req->rq_repmsg); |
| 1131 | *req_ret = early_req; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1132 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1133 | |
| 1134 | err_ctx: |
| 1135 | sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1); |
| 1136 | err_buf: |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 1137 | kvfree(early_buf); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1138 | err_req: |
Andriy Skulysh | 35b2e1b | 2014-04-27 13:06:35 -0400 | [diff] [blame] | 1139 | ptlrpc_request_cache_free(early_req); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1140 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | /** |
| 1144 | * Used by ptlrpc client, to release a processed early reply \a early_req. |
| 1145 | * |
| 1146 | * \pre \a early_req was obtained from calling sptlrpc_cli_unwrap_early_reply(). |
| 1147 | */ |
| 1148 | void sptlrpc_cli_finish_early_reply(struct ptlrpc_request *early_req) |
| 1149 | { |
| 1150 | LASSERT(early_req->rq_repbuf); |
| 1151 | LASSERT(early_req->rq_repdata); |
| 1152 | LASSERT(early_req->rq_repmsg); |
| 1153 | |
| 1154 | sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1); |
Julia Lawall | ee0ec19 | 2015-06-11 14:02:58 +0200 | [diff] [blame] | 1155 | kvfree(early_req->rq_repbuf); |
Andriy Skulysh | 35b2e1b | 2014-04-27 13:06:35 -0400 | [diff] [blame] | 1156 | ptlrpc_request_cache_free(early_req); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1157 | } |
| 1158 | |
| 1159 | /************************************************** |
| 1160 | * sec ID * |
| 1161 | **************************************************/ |
| 1162 | |
| 1163 | /* |
| 1164 | * "fixed" sec (e.g. null) use sec_id < 0 |
| 1165 | */ |
| 1166 | static atomic_t sptlrpc_sec_id = ATOMIC_INIT(1); |
| 1167 | |
| 1168 | int sptlrpc_get_next_secid(void) |
| 1169 | { |
| 1170 | return atomic_inc_return(&sptlrpc_sec_id); |
| 1171 | } |
| 1172 | EXPORT_SYMBOL(sptlrpc_get_next_secid); |
| 1173 | |
| 1174 | /************************************************** |
| 1175 | * client side high-level security APIs * |
| 1176 | **************************************************/ |
| 1177 | |
| 1178 | static int sec_cop_flush_ctx_cache(struct ptlrpc_sec *sec, uid_t uid, |
| 1179 | int grace, int force) |
| 1180 | { |
| 1181 | struct ptlrpc_sec_policy *policy = sec->ps_policy; |
| 1182 | |
| 1183 | LASSERT(policy->sp_cops); |
| 1184 | LASSERT(policy->sp_cops->flush_ctx_cache); |
| 1185 | |
| 1186 | return policy->sp_cops->flush_ctx_cache(sec, uid, grace, force); |
| 1187 | } |
| 1188 | |
| 1189 | static void sec_cop_destroy_sec(struct ptlrpc_sec *sec) |
| 1190 | { |
| 1191 | struct ptlrpc_sec_policy *policy = sec->ps_policy; |
| 1192 | |
| 1193 | LASSERT_ATOMIC_ZERO(&sec->ps_refcount); |
| 1194 | LASSERT_ATOMIC_ZERO(&sec->ps_nctx); |
| 1195 | LASSERT(policy->sp_cops->destroy_sec); |
| 1196 | |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1197 | 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] | 1198 | |
| 1199 | policy->sp_cops->destroy_sec(sec); |
| 1200 | sptlrpc_policy_put(policy); |
| 1201 | } |
| 1202 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1203 | static void sptlrpc_sec_kill(struct ptlrpc_sec *sec) |
| 1204 | { |
| 1205 | LASSERT_ATOMIC_POS(&sec->ps_refcount); |
| 1206 | |
| 1207 | if (sec->ps_policy->sp_cops->kill_sec) { |
| 1208 | sec->ps_policy->sp_cops->kill_sec(sec); |
| 1209 | |
| 1210 | sec_cop_flush_ctx_cache(sec, -1, 1, 1); |
| 1211 | } |
| 1212 | } |
| 1213 | |
Shraddha Barke | be23ce1 | 2015-10-05 05:32:39 +0530 | [diff] [blame] | 1214 | static struct ptlrpc_sec *sptlrpc_sec_get(struct ptlrpc_sec *sec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1215 | { |
| 1216 | if (sec) |
| 1217 | atomic_inc(&sec->ps_refcount); |
| 1218 | |
| 1219 | return sec; |
| 1220 | } |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1221 | |
| 1222 | void sptlrpc_sec_put(struct ptlrpc_sec *sec) |
| 1223 | { |
| 1224 | if (sec) { |
| 1225 | LASSERT_ATOMIC_POS(&sec->ps_refcount); |
| 1226 | |
| 1227 | if (atomic_dec_and_test(&sec->ps_refcount)) { |
| 1228 | sptlrpc_gc_del_sec(sec); |
| 1229 | sec_cop_destroy_sec(sec); |
| 1230 | } |
| 1231 | } |
| 1232 | } |
| 1233 | EXPORT_SYMBOL(sptlrpc_sec_put); |
| 1234 | |
| 1235 | /* |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1236 | * policy module is responsible for taking reference of import |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1237 | */ |
| 1238 | static |
Greg Donald | aff9d8e | 2014-08-21 11:07:42 -0500 | [diff] [blame] | 1239 | struct ptlrpc_sec *sptlrpc_sec_create(struct obd_import *imp, |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1240 | struct ptlrpc_svc_ctx *svc_ctx, |
| 1241 | struct sptlrpc_flavor *sf, |
| 1242 | enum lustre_sec_part sp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1243 | { |
| 1244 | struct ptlrpc_sec_policy *policy; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1245 | struct ptlrpc_sec *sec; |
| 1246 | char str[32]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1247 | |
| 1248 | if (svc_ctx) { |
| 1249 | LASSERT(imp->imp_dlm_fake == 1); |
| 1250 | |
| 1251 | CDEBUG(D_SEC, "%s %s: reverse sec using flavor %s\n", |
| 1252 | imp->imp_obd->obd_type->typ_name, |
| 1253 | imp->imp_obd->obd_name, |
| 1254 | sptlrpc_flavor2name(sf, str, sizeof(str))); |
| 1255 | |
| 1256 | policy = sptlrpc_policy_get(svc_ctx->sc_policy); |
| 1257 | sf->sf_flags |= PTLRPC_SEC_FL_REVERSE | PTLRPC_SEC_FL_ROOTONLY; |
| 1258 | } else { |
| 1259 | LASSERT(imp->imp_dlm_fake == 0); |
| 1260 | |
| 1261 | CDEBUG(D_SEC, "%s %s: select security flavor %s\n", |
| 1262 | imp->imp_obd->obd_type->typ_name, |
| 1263 | imp->imp_obd->obd_name, |
| 1264 | sptlrpc_flavor2name(sf, str, sizeof(str))); |
| 1265 | |
| 1266 | policy = sptlrpc_wireflavor2policy(sf->sf_rpc); |
| 1267 | if (!policy) { |
| 1268 | CERROR("invalid flavor 0x%x\n", sf->sf_rpc); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1269 | return NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1270 | } |
| 1271 | } |
| 1272 | |
| 1273 | sec = policy->sp_cops->create_sec(imp, svc_ctx, sf); |
| 1274 | if (sec) { |
| 1275 | atomic_inc(&sec->ps_refcount); |
| 1276 | |
| 1277 | sec->ps_part = sp; |
| 1278 | |
| 1279 | if (sec->ps_gc_interval && policy->sp_cops->gc_ctx) |
| 1280 | sptlrpc_gc_add_sec(sec); |
| 1281 | } else { |
| 1282 | sptlrpc_policy_put(policy); |
| 1283 | } |
| 1284 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1285 | return sec; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | struct ptlrpc_sec *sptlrpc_import_sec_ref(struct obd_import *imp) |
| 1289 | { |
| 1290 | struct ptlrpc_sec *sec; |
| 1291 | |
| 1292 | spin_lock(&imp->imp_lock); |
| 1293 | sec = sptlrpc_sec_get(imp->imp_sec); |
| 1294 | spin_unlock(&imp->imp_lock); |
| 1295 | |
| 1296 | return sec; |
| 1297 | } |
| 1298 | EXPORT_SYMBOL(sptlrpc_import_sec_ref); |
| 1299 | |
| 1300 | static void sptlrpc_import_sec_install(struct obd_import *imp, |
| 1301 | struct ptlrpc_sec *sec) |
| 1302 | { |
| 1303 | struct ptlrpc_sec *old_sec; |
| 1304 | |
| 1305 | LASSERT_ATOMIC_POS(&sec->ps_refcount); |
| 1306 | |
| 1307 | spin_lock(&imp->imp_lock); |
| 1308 | old_sec = imp->imp_sec; |
| 1309 | imp->imp_sec = sec; |
| 1310 | spin_unlock(&imp->imp_lock); |
| 1311 | |
| 1312 | if (old_sec) { |
| 1313 | sptlrpc_sec_kill(old_sec); |
| 1314 | |
| 1315 | /* balance the ref taken by this import */ |
| 1316 | sptlrpc_sec_put(old_sec); |
| 1317 | } |
| 1318 | } |
| 1319 | |
| 1320 | static inline |
| 1321 | int flavor_equal(struct sptlrpc_flavor *sf1, struct sptlrpc_flavor *sf2) |
| 1322 | { |
| 1323 | return (memcmp(sf1, sf2, sizeof(*sf1)) == 0); |
| 1324 | } |
| 1325 | |
| 1326 | static inline |
| 1327 | void flavor_copy(struct sptlrpc_flavor *dst, struct sptlrpc_flavor *src) |
| 1328 | { |
| 1329 | *dst = *src; |
| 1330 | } |
| 1331 | |
| 1332 | static void sptlrpc_import_sec_adapt_inplace(struct obd_import *imp, |
| 1333 | struct ptlrpc_sec *sec, |
| 1334 | struct sptlrpc_flavor *sf) |
| 1335 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1336 | char str1[32], str2[32]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1337 | |
| 1338 | if (sec->ps_flvr.sf_flags != sf->sf_flags) |
| 1339 | CDEBUG(D_SEC, "changing sec flags: %s -> %s\n", |
| 1340 | sptlrpc_secflags2str(sec->ps_flvr.sf_flags, |
| 1341 | str1, sizeof(str1)), |
| 1342 | sptlrpc_secflags2str(sf->sf_flags, |
| 1343 | str2, sizeof(str2))); |
| 1344 | |
| 1345 | spin_lock(&sec->ps_lock); |
| 1346 | flavor_copy(&sec->ps_flvr, sf); |
| 1347 | spin_unlock(&sec->ps_lock); |
| 1348 | } |
| 1349 | |
| 1350 | /** |
| 1351 | * To get an appropriate ptlrpc_sec for the \a imp, according to the current |
| 1352 | * configuration. Upon called, imp->imp_sec may or may not be NULL. |
| 1353 | * |
| 1354 | * - regular import: \a svc_ctx should be NULL and \a flvr is ignored; |
| 1355 | * - reverse import: \a svc_ctx and \a flvr are obtained from incoming request. |
| 1356 | */ |
| 1357 | int sptlrpc_import_sec_adapt(struct obd_import *imp, |
| 1358 | struct ptlrpc_svc_ctx *svc_ctx, |
| 1359 | struct sptlrpc_flavor *flvr) |
| 1360 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1361 | struct ptlrpc_connection *conn; |
| 1362 | struct sptlrpc_flavor sf; |
| 1363 | struct ptlrpc_sec *sec, *newsec; |
| 1364 | enum lustre_sec_part sp; |
| 1365 | char str[24]; |
| 1366 | int rc = 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1367 | |
| 1368 | might_sleep(); |
| 1369 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1370 | if (!imp) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1371 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1372 | |
| 1373 | conn = imp->imp_connection; |
| 1374 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1375 | if (!svc_ctx) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1376 | struct client_obd *cliobd = &imp->imp_obd->u.cli; |
| 1377 | /* |
| 1378 | * normal import, determine flavor from rule set, except |
| 1379 | * for mgc the flavor is predetermined. |
| 1380 | */ |
| 1381 | if (cliobd->cl_sp_me == LUSTRE_SP_MGC) |
| 1382 | sf = cliobd->cl_flvr_mgc; |
| 1383 | else |
| 1384 | sptlrpc_conf_choose_flavor(cliobd->cl_sp_me, |
| 1385 | cliobd->cl_sp_to, |
| 1386 | &cliobd->cl_target_uuid, |
| 1387 | conn->c_self, &sf); |
| 1388 | |
| 1389 | sp = imp->imp_obd->u.cli.cl_sp_me; |
| 1390 | } else { |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1391 | /* reverse import, determine flavor from incoming request */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1392 | sf = *flvr; |
| 1393 | |
| 1394 | if (sf.sf_rpc != SPTLRPC_FLVR_NULL) |
| 1395 | sf.sf_flags = PTLRPC_SEC_FL_REVERSE | |
| 1396 | PTLRPC_SEC_FL_ROOTONLY; |
| 1397 | |
| 1398 | sp = sptlrpc_target_sec_part(imp->imp_obd); |
| 1399 | } |
| 1400 | |
| 1401 | sec = sptlrpc_import_sec_ref(imp); |
| 1402 | if (sec) { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1403 | char str2[24]; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1404 | |
| 1405 | if (flavor_equal(&sf, &sec->ps_flvr)) |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1406 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1407 | |
| 1408 | CDEBUG(D_SEC, "import %s->%s: changing flavor %s -> %s\n", |
| 1409 | imp->imp_obd->obd_name, |
| 1410 | obd_uuid2str(&conn->c_remote_uuid), |
| 1411 | sptlrpc_flavor2name(&sec->ps_flvr, str, sizeof(str)), |
| 1412 | sptlrpc_flavor2name(&sf, str2, sizeof(str2))); |
| 1413 | |
| 1414 | if (SPTLRPC_FLVR_POLICY(sf.sf_rpc) == |
| 1415 | SPTLRPC_FLVR_POLICY(sec->ps_flvr.sf_rpc) && |
| 1416 | SPTLRPC_FLVR_MECH(sf.sf_rpc) == |
| 1417 | SPTLRPC_FLVR_MECH(sec->ps_flvr.sf_rpc)) { |
| 1418 | sptlrpc_import_sec_adapt_inplace(imp, sec, &sf); |
Julia Lawall | a9b3e8f | 2014-09-07 18:18:29 +0200 | [diff] [blame] | 1419 | goto out; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1420 | } |
| 1421 | } else if (SPTLRPC_FLVR_BASE(sf.sf_rpc) != |
| 1422 | SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL)) { |
| 1423 | CDEBUG(D_SEC, "import %s->%s netid %x: select flavor %s\n", |
| 1424 | imp->imp_obd->obd_name, |
| 1425 | obd_uuid2str(&conn->c_remote_uuid), |
| 1426 | LNET_NIDNET(conn->c_self), |
| 1427 | sptlrpc_flavor2name(&sf, str, sizeof(str))); |
| 1428 | } |
| 1429 | |
| 1430 | mutex_lock(&imp->imp_sec_mutex); |
| 1431 | |
| 1432 | newsec = sptlrpc_sec_create(imp, svc_ctx, &sf, sp); |
| 1433 | if (newsec) { |
| 1434 | sptlrpc_import_sec_install(imp, newsec); |
| 1435 | } else { |
| 1436 | CERROR("import %s->%s: failed to create new sec\n", |
| 1437 | imp->imp_obd->obd_name, |
| 1438 | obd_uuid2str(&conn->c_remote_uuid)); |
| 1439 | rc = -EPERM; |
| 1440 | } |
| 1441 | |
| 1442 | mutex_unlock(&imp->imp_sec_mutex); |
| 1443 | out: |
| 1444 | sptlrpc_sec_put(sec); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1445 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1446 | } |
| 1447 | |
| 1448 | void sptlrpc_import_sec_put(struct obd_import *imp) |
| 1449 | { |
| 1450 | if (imp->imp_sec) { |
| 1451 | sptlrpc_sec_kill(imp->imp_sec); |
| 1452 | |
| 1453 | sptlrpc_sec_put(imp->imp_sec); |
| 1454 | imp->imp_sec = NULL; |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | static void import_flush_ctx_common(struct obd_import *imp, |
| 1459 | uid_t uid, int grace, int force) |
| 1460 | { |
| 1461 | struct ptlrpc_sec *sec; |
| 1462 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1463 | if (!imp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1464 | return; |
| 1465 | |
| 1466 | sec = sptlrpc_import_sec_ref(imp); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1467 | if (!sec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1468 | return; |
| 1469 | |
| 1470 | sec_cop_flush_ctx_cache(sec, uid, grace, force); |
| 1471 | sptlrpc_sec_put(sec); |
| 1472 | } |
| 1473 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1474 | void sptlrpc_import_flush_my_ctx(struct obd_import *imp) |
| 1475 | { |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 1476 | import_flush_ctx_common(imp, from_kuid(&init_user_ns, current_uid()), |
| 1477 | 1, 1); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1478 | } |
| 1479 | EXPORT_SYMBOL(sptlrpc_import_flush_my_ctx); |
| 1480 | |
| 1481 | void sptlrpc_import_flush_all_ctx(struct obd_import *imp) |
| 1482 | { |
| 1483 | import_flush_ctx_common(imp, -1, 1, 1); |
| 1484 | } |
| 1485 | EXPORT_SYMBOL(sptlrpc_import_flush_all_ctx); |
| 1486 | |
| 1487 | /** |
| 1488 | * Used by ptlrpc client to allocate request buffer of \a req. Upon return |
| 1489 | * successfully, req->rq_reqmsg points to a buffer with size \a msgsize. |
| 1490 | */ |
| 1491 | int sptlrpc_cli_alloc_reqbuf(struct ptlrpc_request *req, int msgsize) |
| 1492 | { |
| 1493 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1494 | struct ptlrpc_sec_policy *policy; |
| 1495 | int rc; |
| 1496 | |
| 1497 | LASSERT(ctx); |
| 1498 | LASSERT(ctx->cc_sec); |
| 1499 | LASSERT(ctx->cc_sec->ps_policy); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1500 | LASSERT(!req->rq_reqmsg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1501 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 1502 | |
| 1503 | policy = ctx->cc_sec->ps_policy; |
| 1504 | rc = policy->sp_cops->alloc_reqbuf(ctx->cc_sec, req, msgsize); |
| 1505 | if (!rc) { |
| 1506 | LASSERT(req->rq_reqmsg); |
| 1507 | LASSERT(req->rq_reqbuf || req->rq_clrbuf); |
| 1508 | |
| 1509 | /* zeroing preallocated buffer */ |
| 1510 | if (req->rq_pool) |
| 1511 | memset(req->rq_reqmsg, 0, msgsize); |
| 1512 | } |
| 1513 | |
| 1514 | return rc; |
| 1515 | } |
| 1516 | |
| 1517 | /** |
| 1518 | * Used by ptlrpc client to free request buffer of \a req. After this |
| 1519 | * req->rq_reqmsg is set to NULL and should not be accessed anymore. |
| 1520 | */ |
| 1521 | void sptlrpc_cli_free_reqbuf(struct ptlrpc_request *req) |
| 1522 | { |
| 1523 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1524 | struct ptlrpc_sec_policy *policy; |
| 1525 | |
| 1526 | LASSERT(ctx); |
| 1527 | LASSERT(ctx->cc_sec); |
| 1528 | LASSERT(ctx->cc_sec->ps_policy); |
| 1529 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 1530 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1531 | if (!req->rq_reqbuf && !req->rq_clrbuf) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1532 | return; |
| 1533 | |
| 1534 | policy = ctx->cc_sec->ps_policy; |
| 1535 | policy->sp_cops->free_reqbuf(ctx->cc_sec, req); |
| 1536 | req->rq_reqmsg = NULL; |
| 1537 | } |
| 1538 | |
| 1539 | /* |
| 1540 | * NOTE caller must guarantee the buffer size is enough for the enlargement |
| 1541 | */ |
| 1542 | void _sptlrpc_enlarge_msg_inplace(struct lustre_msg *msg, |
| 1543 | int segment, int newsize) |
| 1544 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1545 | void *src, *dst; |
| 1546 | int oldsize, oldmsg_size, movesize; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1547 | |
| 1548 | LASSERT(segment < msg->lm_bufcount); |
| 1549 | LASSERT(msg->lm_buflens[segment] <= newsize); |
| 1550 | |
| 1551 | if (msg->lm_buflens[segment] == newsize) |
| 1552 | return; |
| 1553 | |
| 1554 | /* nothing to do if we are enlarging the last segment */ |
| 1555 | if (segment == msg->lm_bufcount - 1) { |
| 1556 | msg->lm_buflens[segment] = newsize; |
| 1557 | return; |
| 1558 | } |
| 1559 | |
| 1560 | oldsize = msg->lm_buflens[segment]; |
| 1561 | |
| 1562 | src = lustre_msg_buf(msg, segment + 1, 0); |
| 1563 | msg->lm_buflens[segment] = newsize; |
| 1564 | dst = lustre_msg_buf(msg, segment + 1, 0); |
| 1565 | msg->lm_buflens[segment] = oldsize; |
| 1566 | |
| 1567 | /* move from segment + 1 to end segment */ |
| 1568 | LASSERT(msg->lm_magic == LUSTRE_MSG_MAGIC_V2); |
| 1569 | oldmsg_size = lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens); |
Oleg Drokin | 9797fb0 | 2016-06-18 23:53:12 -0400 | [diff] [blame] | 1570 | movesize = oldmsg_size - ((unsigned long)src - (unsigned long)msg); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1571 | LASSERT(movesize >= 0); |
| 1572 | |
| 1573 | if (movesize) |
| 1574 | memmove(dst, src, movesize); |
| 1575 | |
| 1576 | /* note we don't clear the ares where old data live, not secret */ |
| 1577 | |
| 1578 | /* finally set new segment size */ |
| 1579 | msg->lm_buflens[segment] = newsize; |
| 1580 | } |
| 1581 | EXPORT_SYMBOL(_sptlrpc_enlarge_msg_inplace); |
| 1582 | |
| 1583 | /** |
| 1584 | * Used by ptlrpc client to enlarge the \a segment of request message pointed |
| 1585 | * by req->rq_reqmsg to size \a newsize, all previously filled-in data will be |
| 1586 | * preserved after the enlargement. this must be called after original request |
| 1587 | * buffer being allocated. |
| 1588 | * |
| 1589 | * \note after this be called, rq_reqmsg and rq_reqlen might have been changed, |
| 1590 | * so caller should refresh its local pointers if needed. |
| 1591 | */ |
| 1592 | int sptlrpc_cli_enlarge_reqbuf(struct ptlrpc_request *req, |
| 1593 | int segment, int newsize) |
| 1594 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1595 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1596 | struct ptlrpc_sec_cops *cops; |
| 1597 | struct lustre_msg *msg = req->rq_reqmsg; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1598 | |
| 1599 | LASSERT(ctx); |
| 1600 | LASSERT(msg); |
| 1601 | LASSERT(msg->lm_bufcount > segment); |
| 1602 | LASSERT(msg->lm_buflens[segment] <= newsize); |
| 1603 | |
| 1604 | if (msg->lm_buflens[segment] == newsize) |
| 1605 | return 0; |
| 1606 | |
| 1607 | cops = ctx->cc_sec->ps_policy->sp_cops; |
| 1608 | LASSERT(cops->enlarge_reqbuf); |
| 1609 | return cops->enlarge_reqbuf(ctx->cc_sec, req, segment, newsize); |
| 1610 | } |
| 1611 | EXPORT_SYMBOL(sptlrpc_cli_enlarge_reqbuf); |
| 1612 | |
| 1613 | /** |
| 1614 | * Used by ptlrpc client to allocate reply buffer of \a req. |
| 1615 | * |
| 1616 | * \note After this, req->rq_repmsg is still not accessible. |
| 1617 | */ |
| 1618 | int sptlrpc_cli_alloc_repbuf(struct ptlrpc_request *req, int msgsize) |
| 1619 | { |
| 1620 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1621 | struct ptlrpc_sec_policy *policy; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1622 | |
| 1623 | LASSERT(ctx); |
| 1624 | LASSERT(ctx->cc_sec); |
| 1625 | LASSERT(ctx->cc_sec->ps_policy); |
| 1626 | |
| 1627 | if (req->rq_repbuf) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1628 | return 0; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1629 | |
| 1630 | policy = ctx->cc_sec->ps_policy; |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1631 | return policy->sp_cops->alloc_repbuf(ctx->cc_sec, req, msgsize); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1632 | } |
| 1633 | |
| 1634 | /** |
| 1635 | * Used by ptlrpc client to free reply buffer of \a req. After this |
| 1636 | * req->rq_repmsg is set to NULL and should not be accessed anymore. |
| 1637 | */ |
| 1638 | void sptlrpc_cli_free_repbuf(struct ptlrpc_request *req) |
| 1639 | { |
| 1640 | struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx; |
| 1641 | struct ptlrpc_sec_policy *policy; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1642 | |
| 1643 | LASSERT(ctx); |
| 1644 | LASSERT(ctx->cc_sec); |
| 1645 | LASSERT(ctx->cc_sec->ps_policy); |
| 1646 | LASSERT_ATOMIC_POS(&ctx->cc_refcount); |
| 1647 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1648 | if (!req->rq_repbuf) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1649 | return; |
| 1650 | LASSERT(req->rq_repbuf_len); |
| 1651 | |
| 1652 | policy = ctx->cc_sec->ps_policy; |
| 1653 | policy->sp_cops->free_repbuf(ctx->cc_sec, req); |
| 1654 | req->rq_repmsg = NULL; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1655 | } |
| 1656 | |
Shraddha Barke | be23ce1 | 2015-10-05 05:32:39 +0530 | [diff] [blame] | 1657 | static int sptlrpc_svc_install_rvs_ctx(struct obd_import *imp, |
| 1658 | struct ptlrpc_svc_ctx *ctx) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1659 | { |
| 1660 | struct ptlrpc_sec_policy *policy = ctx->sc_policy; |
| 1661 | |
| 1662 | if (!policy->sp_sops->install_rctx) |
| 1663 | return 0; |
| 1664 | return policy->sp_sops->install_rctx(imp, ctx); |
| 1665 | } |
| 1666 | |
| 1667 | /**************************************** |
| 1668 | * server side security * |
| 1669 | ****************************************/ |
| 1670 | |
| 1671 | static int flavor_allowed(struct sptlrpc_flavor *exp, |
| 1672 | struct ptlrpc_request *req) |
| 1673 | { |
| 1674 | struct sptlrpc_flavor *flvr = &req->rq_flvr; |
| 1675 | |
| 1676 | if (exp->sf_rpc == SPTLRPC_FLVR_ANY || exp->sf_rpc == flvr->sf_rpc) |
| 1677 | return 1; |
| 1678 | |
| 1679 | if ((req->rq_ctx_init || req->rq_ctx_fini) && |
| 1680 | SPTLRPC_FLVR_POLICY(exp->sf_rpc) == |
| 1681 | SPTLRPC_FLVR_POLICY(flvr->sf_rpc) && |
| 1682 | SPTLRPC_FLVR_MECH(exp->sf_rpc) == SPTLRPC_FLVR_MECH(flvr->sf_rpc)) |
| 1683 | return 1; |
| 1684 | |
| 1685 | return 0; |
| 1686 | } |
| 1687 | |
| 1688 | #define EXP_FLVR_UPDATE_EXPIRE (OBD_TIMEOUT_DEFAULT + 10) |
| 1689 | |
| 1690 | /** |
| 1691 | * Given an export \a exp, check whether the flavor of incoming \a req |
| 1692 | * is allowed by the export \a exp. Main logic is about taking care of |
| 1693 | * changing configurations. Return 0 means success. |
| 1694 | */ |
| 1695 | int sptlrpc_target_export_check(struct obd_export *exp, |
| 1696 | struct ptlrpc_request *req) |
| 1697 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1698 | struct sptlrpc_flavor flavor; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1699 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1700 | if (!exp) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1701 | return 0; |
| 1702 | |
| 1703 | /* client side export has no imp_reverse, skip |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1704 | * FIXME maybe we should check flavor this as well??? |
| 1705 | */ |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1706 | if (!exp->exp_imp_reverse) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1707 | return 0; |
| 1708 | |
| 1709 | /* don't care about ctx fini rpc */ |
| 1710 | if (req->rq_ctx_fini) |
| 1711 | return 0; |
| 1712 | |
| 1713 | spin_lock(&exp->exp_lock); |
| 1714 | |
| 1715 | /* if flavor just changed (exp->exp_flvr_changed != 0), we wait for |
| 1716 | * the first req with the new flavor, then treat it as current flavor, |
| 1717 | * adapt reverse sec according to it. |
| 1718 | * 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] | 1719 | * which case delay the sec_adapt by leaving exp_flvr_adapt == 1. |
| 1720 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1721 | if (unlikely(exp->exp_flvr_changed) && |
| 1722 | flavor_allowed(&exp->exp_flvr_old[1], req)) { |
| 1723 | /* make the new flavor as "current", and old ones as |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1724 | * about-to-expire |
| 1725 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1726 | CDEBUG(D_SEC, "exp %p: just changed: %x->%x\n", exp, |
| 1727 | exp->exp_flvr.sf_rpc, exp->exp_flvr_old[1].sf_rpc); |
| 1728 | flavor = exp->exp_flvr_old[1]; |
| 1729 | exp->exp_flvr_old[1] = exp->exp_flvr_old[0]; |
| 1730 | exp->exp_flvr_expire[1] = exp->exp_flvr_expire[0]; |
| 1731 | exp->exp_flvr_old[0] = exp->exp_flvr; |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1732 | exp->exp_flvr_expire[0] = ktime_get_real_seconds() + |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1733 | EXP_FLVR_UPDATE_EXPIRE; |
| 1734 | exp->exp_flvr = flavor; |
| 1735 | |
| 1736 | /* flavor change finished */ |
| 1737 | exp->exp_flvr_changed = 0; |
| 1738 | LASSERT(exp->exp_flvr_adapt == 1); |
| 1739 | |
| 1740 | /* if it's gss, we only interested in root ctx init */ |
| 1741 | if (req->rq_auth_gss && |
| 1742 | !(req->rq_ctx_init && |
| 1743 | (req->rq_auth_usr_root || req->rq_auth_usr_mdt || |
| 1744 | req->rq_auth_usr_ost))) { |
| 1745 | spin_unlock(&exp->exp_lock); |
| 1746 | CDEBUG(D_SEC, "is good but not root(%d:%d:%d:%d:%d)\n", |
| 1747 | req->rq_auth_gss, req->rq_ctx_init, |
| 1748 | req->rq_auth_usr_root, req->rq_auth_usr_mdt, |
| 1749 | req->rq_auth_usr_ost); |
| 1750 | return 0; |
| 1751 | } |
| 1752 | |
| 1753 | exp->exp_flvr_adapt = 0; |
| 1754 | spin_unlock(&exp->exp_lock); |
| 1755 | |
| 1756 | return sptlrpc_import_sec_adapt(exp->exp_imp_reverse, |
| 1757 | req->rq_svc_ctx, &flavor); |
| 1758 | } |
| 1759 | |
| 1760 | /* 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] | 1761 | * dealing with reverse sec/ctx |
| 1762 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1763 | if (likely(flavor_allowed(&exp->exp_flvr, req))) { |
| 1764 | /* most cases should return here, we only interested in |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1765 | * gss root ctx init |
| 1766 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1767 | if (!req->rq_auth_gss || !req->rq_ctx_init || |
| 1768 | (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt && |
| 1769 | !req->rq_auth_usr_ost)) { |
| 1770 | spin_unlock(&exp->exp_lock); |
| 1771 | return 0; |
| 1772 | } |
| 1773 | |
| 1774 | /* if flavor just changed, we should not proceed, just leave |
| 1775 | * it and current flavor will be discovered and replaced |
Oleg Drokin | dadfcda | 2016-02-24 22:00:38 -0500 | [diff] [blame] | 1776 | * shortly, and let _this_ rpc pass through |
| 1777 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1778 | if (exp->exp_flvr_changed) { |
| 1779 | LASSERT(exp->exp_flvr_adapt); |
| 1780 | spin_unlock(&exp->exp_lock); |
| 1781 | return 0; |
| 1782 | } |
| 1783 | |
| 1784 | if (exp->exp_flvr_adapt) { |
| 1785 | exp->exp_flvr_adapt = 0; |
| 1786 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): do delayed adapt\n", |
| 1787 | exp, exp->exp_flvr.sf_rpc, |
| 1788 | exp->exp_flvr_old[0].sf_rpc, |
| 1789 | exp->exp_flvr_old[1].sf_rpc); |
| 1790 | flavor = exp->exp_flvr; |
| 1791 | spin_unlock(&exp->exp_lock); |
| 1792 | |
| 1793 | return sptlrpc_import_sec_adapt(exp->exp_imp_reverse, |
| 1794 | req->rq_svc_ctx, |
| 1795 | &flavor); |
| 1796 | } else { |
Joe Perches | 2d00bd1 | 2014-11-23 11:28:50 -0800 | [diff] [blame] | 1797 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): is current flavor, install rvs ctx\n", |
| 1798 | exp, exp->exp_flvr.sf_rpc, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1799 | exp->exp_flvr_old[0].sf_rpc, |
| 1800 | exp->exp_flvr_old[1].sf_rpc); |
| 1801 | spin_unlock(&exp->exp_lock); |
| 1802 | |
| 1803 | return sptlrpc_svc_install_rvs_ctx(exp->exp_imp_reverse, |
| 1804 | req->rq_svc_ctx); |
| 1805 | } |
| 1806 | } |
| 1807 | |
| 1808 | if (exp->exp_flvr_expire[0]) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1809 | if (exp->exp_flvr_expire[0] >= ktime_get_real_seconds()) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1810 | if (flavor_allowed(&exp->exp_flvr_old[0], req)) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1811 | 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] | 1812 | exp->exp_flvr.sf_rpc, |
| 1813 | exp->exp_flvr_old[0].sf_rpc, |
| 1814 | exp->exp_flvr_old[1].sf_rpc, |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1815 | (s64)(exp->exp_flvr_expire[0] - |
| 1816 | ktime_get_real_seconds())); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1817 | spin_unlock(&exp->exp_lock); |
| 1818 | return 0; |
| 1819 | } |
| 1820 | } else { |
| 1821 | CDEBUG(D_SEC, "mark middle expired\n"); |
| 1822 | exp->exp_flvr_expire[0] = 0; |
| 1823 | } |
| 1824 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match middle\n", exp, |
| 1825 | exp->exp_flvr.sf_rpc, |
| 1826 | exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc, |
| 1827 | req->rq_flvr.sf_rpc); |
| 1828 | } |
| 1829 | |
| 1830 | /* 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] | 1831 | * accept it is match the old flavors which is not expired. |
| 1832 | */ |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1833 | if (exp->exp_flvr_changed == 0 && exp->exp_flvr_expire[1]) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1834 | if (exp->exp_flvr_expire[1] >= ktime_get_real_seconds()) { |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1835 | if (flavor_allowed(&exp->exp_flvr_old[1], req)) { |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1836 | 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] | 1837 | exp, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1838 | exp->exp_flvr.sf_rpc, |
| 1839 | exp->exp_flvr_old[0].sf_rpc, |
| 1840 | exp->exp_flvr_old[1].sf_rpc, |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1841 | (s64)(exp->exp_flvr_expire[1] - |
| 1842 | ktime_get_real_seconds())); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1843 | spin_unlock(&exp->exp_lock); |
| 1844 | return 0; |
| 1845 | } |
| 1846 | } else { |
| 1847 | CDEBUG(D_SEC, "mark oldest expired\n"); |
| 1848 | exp->exp_flvr_expire[1] = 0; |
| 1849 | } |
| 1850 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match found\n", |
| 1851 | exp, exp->exp_flvr.sf_rpc, |
| 1852 | exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc, |
| 1853 | req->rq_flvr.sf_rpc); |
| 1854 | } else { |
| 1855 | CDEBUG(D_SEC, "exp %p (%x|%x|%x): skip the last one\n", |
| 1856 | exp, exp->exp_flvr.sf_rpc, exp->exp_flvr_old[0].sf_rpc, |
| 1857 | exp->exp_flvr_old[1].sf_rpc); |
| 1858 | } |
| 1859 | |
| 1860 | spin_unlock(&exp->exp_lock); |
| 1861 | |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1862 | 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] | 1863 | exp, exp->exp_obd->obd_name, |
| 1864 | req, req->rq_auth_gss, req->rq_ctx_init, req->rq_ctx_fini, |
| 1865 | req->rq_auth_usr_root, req->rq_auth_usr_mdt, req->rq_auth_usr_ost, |
| 1866 | req->rq_flvr.sf_rpc, |
| 1867 | exp->exp_flvr.sf_rpc, |
| 1868 | exp->exp_flvr_old[0].sf_rpc, |
| 1869 | exp->exp_flvr_expire[0] ? |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1870 | (s64)(exp->exp_flvr_expire[0] - ktime_get_real_seconds()) : 0, |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1871 | exp->exp_flvr_old[1].sf_rpc, |
| 1872 | exp->exp_flvr_expire[1] ? |
Arnd Bergmann | 986ef13 | 2015-09-27 16:45:28 -0400 | [diff] [blame] | 1873 | (s64)(exp->exp_flvr_expire[1] - ktime_get_real_seconds()) : 0); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1874 | return -EACCES; |
| 1875 | } |
| 1876 | EXPORT_SYMBOL(sptlrpc_target_export_check); |
| 1877 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1878 | static int sptlrpc_svc_check_from(struct ptlrpc_request *req, int svc_rc) |
| 1879 | { |
| 1880 | /* peer's claim is unreliable unless gss is being used */ |
| 1881 | if (!req->rq_auth_gss || svc_rc == SECSVC_DROP) |
| 1882 | return svc_rc; |
| 1883 | |
| 1884 | switch (req->rq_sp_from) { |
| 1885 | case LUSTRE_SP_CLI: |
| 1886 | if (req->rq_auth_usr_mdt || req->rq_auth_usr_ost) { |
| 1887 | DEBUG_REQ(D_ERROR, req, "faked source CLI"); |
| 1888 | svc_rc = SECSVC_DROP; |
| 1889 | } |
| 1890 | break; |
| 1891 | case LUSTRE_SP_MDT: |
| 1892 | if (!req->rq_auth_usr_mdt) { |
| 1893 | DEBUG_REQ(D_ERROR, req, "faked source MDT"); |
| 1894 | svc_rc = SECSVC_DROP; |
| 1895 | } |
| 1896 | break; |
| 1897 | case LUSTRE_SP_OST: |
| 1898 | if (!req->rq_auth_usr_ost) { |
| 1899 | DEBUG_REQ(D_ERROR, req, "faked source OST"); |
| 1900 | svc_rc = SECSVC_DROP; |
| 1901 | } |
| 1902 | break; |
| 1903 | case LUSTRE_SP_MGS: |
| 1904 | case LUSTRE_SP_MGC: |
| 1905 | if (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt && |
| 1906 | !req->rq_auth_usr_ost) { |
| 1907 | DEBUG_REQ(D_ERROR, req, "faked source MGC/MGS"); |
| 1908 | svc_rc = SECSVC_DROP; |
| 1909 | } |
| 1910 | break; |
| 1911 | case LUSTRE_SP_ANY: |
| 1912 | default: |
| 1913 | DEBUG_REQ(D_ERROR, req, "invalid source %u", req->rq_sp_from); |
| 1914 | svc_rc = SECSVC_DROP; |
| 1915 | } |
| 1916 | |
| 1917 | return svc_rc; |
| 1918 | } |
| 1919 | |
| 1920 | /** |
| 1921 | * Used by ptlrpc server, to perform transformation upon request message of |
| 1922 | * incoming \a req. This must be the first thing to do with a incoming |
| 1923 | * request in ptlrpc layer. |
| 1924 | * |
| 1925 | * \retval SECSVC_OK success, and req->rq_reqmsg point to request message in |
| 1926 | * clear text, size is req->rq_reqlen; also req->rq_svc_ctx is set. |
| 1927 | * \retval SECSVC_COMPLETE success, the request has been fully processed, and |
| 1928 | * reply message has been prepared. |
| 1929 | * \retval SECSVC_DROP failed, this request should be dropped. |
| 1930 | */ |
| 1931 | int sptlrpc_svc_unwrap_request(struct ptlrpc_request *req) |
| 1932 | { |
| 1933 | struct ptlrpc_sec_policy *policy; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 1934 | struct lustre_msg *msg = req->rq_reqbuf; |
| 1935 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1936 | |
| 1937 | LASSERT(msg); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 1938 | LASSERT(!req->rq_reqmsg); |
| 1939 | LASSERT(!req->rq_repmsg); |
| 1940 | LASSERT(!req->rq_svc_ctx); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1941 | |
| 1942 | req->rq_req_swab_mask = 0; |
| 1943 | |
| 1944 | rc = __lustre_unpack_msg(msg, req->rq_reqdata_len); |
| 1945 | switch (rc) { |
| 1946 | case 1: |
| 1947 | lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF); |
| 1948 | case 0: |
| 1949 | break; |
| 1950 | default: |
Greg Kroah-Hartman | b0f5aad | 2014-07-12 20:06:04 -0700 | [diff] [blame] | 1951 | CERROR("error unpacking request from %s x%llu\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1952 | libcfs_id2str(req->rq_peer), req->rq_xid); |
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 | req->rq_flvr.sf_rpc = WIRE_FLVR(msg->lm_secflvr); |
| 1957 | req->rq_sp_from = LUSTRE_SP_ANY; |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 1958 | req->rq_auth_uid = -1; |
| 1959 | req->rq_auth_mapped_uid = -1; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1960 | |
| 1961 | policy = sptlrpc_wireflavor2policy(req->rq_flvr.sf_rpc); |
| 1962 | if (!policy) { |
| 1963 | CERROR("unsupported rpc flavor %x\n", req->rq_flvr.sf_rpc); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1964 | return SECSVC_DROP; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1965 | } |
| 1966 | |
| 1967 | LASSERT(policy->sp_sops->accept); |
| 1968 | rc = policy->sp_sops->accept(req); |
| 1969 | sptlrpc_policy_put(policy); |
| 1970 | LASSERT(req->rq_reqmsg || rc != SECSVC_OK); |
| 1971 | LASSERT(req->rq_svc_ctx || rc == SECSVC_DROP); |
| 1972 | |
| 1973 | /* |
| 1974 | * if it's not null flavor (which means embedded packing msg), |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 1975 | * reset the swab mask for the coming inner msg unpacking. |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1976 | */ |
| 1977 | if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL) |
| 1978 | req->rq_req_swab_mask = 0; |
| 1979 | |
| 1980 | /* sanity check for the request source */ |
| 1981 | rc = sptlrpc_svc_check_from(req, rc); |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 1982 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1983 | } |
| 1984 | |
| 1985 | /** |
| 1986 | * Used by ptlrpc server, to allocate reply buffer for \a req. If succeed, |
| 1987 | * req->rq_reply_state is set, and req->rq_reply_state->rs_msg point to |
| 1988 | * a buffer of \a msglen size. |
| 1989 | */ |
| 1990 | int sptlrpc_svc_alloc_rs(struct ptlrpc_request *req, int msglen) |
| 1991 | { |
| 1992 | struct ptlrpc_sec_policy *policy; |
| 1993 | struct ptlrpc_reply_state *rs; |
| 1994 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 1995 | |
| 1996 | LASSERT(req->rq_svc_ctx); |
| 1997 | LASSERT(req->rq_svc_ctx->sc_policy); |
| 1998 | |
| 1999 | policy = req->rq_svc_ctx->sc_policy; |
| 2000 | LASSERT(policy->sp_sops->alloc_rs); |
| 2001 | |
| 2002 | rc = policy->sp_sops->alloc_rs(req, msglen); |
| 2003 | if (unlikely(rc == -ENOMEM)) { |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 2004 | struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt; |
Mike Rapoport | 50ffcb7 | 2015-10-13 16:03:40 +0300 | [diff] [blame] | 2005 | |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 2006 | if (svcpt->scp_service->srv_max_reply_size < |
| 2007 | msglen + sizeof(struct ptlrpc_reply_state)) { |
| 2008 | /* Just return failure if the size is too big */ |
James Nunez | 19b2056 | 2016-03-07 18:10:21 -0500 | [diff] [blame] | 2009 | CERROR("size of message is too big (%zd), %d allowed\n", |
Oleg Drokin | 30c0aa3 | 2016-02-26 01:50:02 -0500 | [diff] [blame] | 2010 | msglen + sizeof(struct ptlrpc_reply_state), |
| 2011 | svcpt->scp_service->srv_max_reply_size); |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 2012 | return -ENOMEM; |
| 2013 | } |
| 2014 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2015 | /* failed alloc, try emergency pool */ |
Patrick Farrell | a34041a | 2014-04-27 13:06:25 -0400 | [diff] [blame] | 2016 | rs = lustre_get_emerg_rs(svcpt); |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 2017 | if (!rs) |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 2018 | return -ENOMEM; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2019 | |
| 2020 | req->rq_reply_state = rs; |
| 2021 | rc = policy->sp_sops->alloc_rs(req, msglen); |
| 2022 | if (rc) { |
| 2023 | lustre_put_emerg_rs(rs); |
| 2024 | req->rq_reply_state = NULL; |
| 2025 | } |
| 2026 | } |
| 2027 | |
| 2028 | LASSERT(rc != 0 || |
| 2029 | (req->rq_reply_state && req->rq_reply_state->rs_msg)); |
| 2030 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 2031 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2032 | } |
| 2033 | |
| 2034 | /** |
| 2035 | * Used by ptlrpc server, to perform transformation upon reply message. |
| 2036 | * |
Masanari Iida | 0c2bc75 | 2014-02-08 00:30:37 +0900 | [diff] [blame] | 2037 | * \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] | 2038 | * \post req->rq_repmsg and req->rq_reply_state->rs_msg becomes inaccessible. |
| 2039 | */ |
| 2040 | int sptlrpc_svc_wrap_reply(struct ptlrpc_request *req) |
| 2041 | { |
| 2042 | struct ptlrpc_sec_policy *policy; |
| 2043 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2044 | |
| 2045 | LASSERT(req->rq_svc_ctx); |
| 2046 | LASSERT(req->rq_svc_ctx->sc_policy); |
| 2047 | |
| 2048 | policy = req->rq_svc_ctx->sc_policy; |
| 2049 | LASSERT(policy->sp_sops->authorize); |
| 2050 | |
| 2051 | rc = policy->sp_sops->authorize(req); |
| 2052 | LASSERT(rc || req->rq_reply_state->rs_repdata_len); |
| 2053 | |
Greg Kroah-Hartman | 0a3bdb0 | 2013-08-03 10:35:28 +0800 | [diff] [blame] | 2054 | return rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2055 | } |
| 2056 | |
| 2057 | /** |
| 2058 | * Used by ptlrpc server, to free reply_state. |
| 2059 | */ |
| 2060 | void sptlrpc_svc_free_rs(struct ptlrpc_reply_state *rs) |
| 2061 | { |
| 2062 | struct ptlrpc_sec_policy *policy; |
| 2063 | unsigned int prealloc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2064 | |
| 2065 | LASSERT(rs->rs_svc_ctx); |
| 2066 | LASSERT(rs->rs_svc_ctx->sc_policy); |
| 2067 | |
| 2068 | policy = rs->rs_svc_ctx->sc_policy; |
| 2069 | LASSERT(policy->sp_sops->free_rs); |
| 2070 | |
| 2071 | prealloc = rs->rs_prealloc; |
| 2072 | policy->sp_sops->free_rs(rs); |
| 2073 | |
| 2074 | if (prealloc) |
| 2075 | lustre_put_emerg_rs(rs); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2076 | } |
| 2077 | |
| 2078 | void sptlrpc_svc_ctx_addref(struct ptlrpc_request *req) |
| 2079 | { |
| 2080 | struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx; |
| 2081 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 2082 | if (ctx) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2083 | atomic_inc(&ctx->sc_refcount); |
| 2084 | } |
| 2085 | |
| 2086 | void sptlrpc_svc_ctx_decref(struct ptlrpc_request *req) |
| 2087 | { |
| 2088 | struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx; |
| 2089 | |
Oleg Drokin | 8b38208 | 2016-02-16 00:46:58 -0500 | [diff] [blame] | 2090 | if (!ctx) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2091 | return; |
| 2092 | |
| 2093 | LASSERT_ATOMIC_POS(&ctx->sc_refcount); |
| 2094 | if (atomic_dec_and_test(&ctx->sc_refcount)) { |
| 2095 | if (ctx->sc_policy->sp_sops->free_ctx) |
| 2096 | ctx->sc_policy->sp_sops->free_ctx(ctx); |
| 2097 | } |
| 2098 | req->rq_svc_ctx = NULL; |
| 2099 | } |
| 2100 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2101 | /**************************************** |
| 2102 | * bulk security * |
| 2103 | ****************************************/ |
| 2104 | |
| 2105 | /** |
| 2106 | * Perform transformation upon bulk data pointed by \a desc. This is called |
| 2107 | * before transforming the request message. |
| 2108 | */ |
| 2109 | int sptlrpc_cli_wrap_bulk(struct ptlrpc_request *req, |
| 2110 | struct ptlrpc_bulk_desc *desc) |
| 2111 | { |
| 2112 | struct ptlrpc_cli_ctx *ctx; |
| 2113 | |
| 2114 | LASSERT(req->rq_bulk_read || req->rq_bulk_write); |
| 2115 | |
| 2116 | if (!req->rq_pack_bulk) |
| 2117 | return 0; |
| 2118 | |
| 2119 | ctx = req->rq_cli_ctx; |
| 2120 | if (ctx->cc_ops->wrap_bulk) |
| 2121 | return ctx->cc_ops->wrap_bulk(ctx, req, desc); |
| 2122 | return 0; |
| 2123 | } |
| 2124 | EXPORT_SYMBOL(sptlrpc_cli_wrap_bulk); |
| 2125 | |
| 2126 | /** |
| 2127 | * This is called after unwrap the reply message. |
| 2128 | * return nob of actual plain text size received, or error code. |
| 2129 | */ |
| 2130 | int sptlrpc_cli_unwrap_bulk_read(struct ptlrpc_request *req, |
| 2131 | struct ptlrpc_bulk_desc *desc, |
| 2132 | int nob) |
| 2133 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 2134 | struct ptlrpc_cli_ctx *ctx; |
| 2135 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2136 | |
| 2137 | LASSERT(req->rq_bulk_read && !req->rq_bulk_write); |
| 2138 | |
| 2139 | if (!req->rq_pack_bulk) |
| 2140 | return desc->bd_nob_transferred; |
| 2141 | |
| 2142 | ctx = req->rq_cli_ctx; |
| 2143 | if (ctx->cc_ops->unwrap_bulk) { |
| 2144 | rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc); |
| 2145 | if (rc < 0) |
| 2146 | return rc; |
| 2147 | } |
| 2148 | return desc->bd_nob_transferred; |
| 2149 | } |
| 2150 | EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_read); |
| 2151 | |
| 2152 | /** |
| 2153 | * This is called after unwrap the reply message. |
| 2154 | * return 0 for success or error code. |
| 2155 | */ |
| 2156 | int sptlrpc_cli_unwrap_bulk_write(struct ptlrpc_request *req, |
| 2157 | struct ptlrpc_bulk_desc *desc) |
| 2158 | { |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 2159 | struct ptlrpc_cli_ctx *ctx; |
| 2160 | int rc; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2161 | |
| 2162 | LASSERT(!req->rq_bulk_read && req->rq_bulk_write); |
| 2163 | |
| 2164 | if (!req->rq_pack_bulk) |
| 2165 | return 0; |
| 2166 | |
| 2167 | ctx = req->rq_cli_ctx; |
| 2168 | if (ctx->cc_ops->unwrap_bulk) { |
| 2169 | rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc); |
| 2170 | if (rc < 0) |
| 2171 | return rc; |
| 2172 | } |
| 2173 | |
| 2174 | /* |
| 2175 | * if everything is going right, nob should equals to nob_transferred. |
| 2176 | * in case of privacy mode, nob_transferred needs to be adjusted. |
| 2177 | */ |
| 2178 | if (desc->bd_nob != desc->bd_nob_transferred) { |
James Nunez | 19b2056 | 2016-03-07 18:10:21 -0500 | [diff] [blame] | 2179 | CERROR("nob %d doesn't match transferred nob %d\n", |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2180 | desc->bd_nob, desc->bd_nob_transferred); |
| 2181 | return -EPROTO; |
| 2182 | } |
| 2183 | |
| 2184 | return 0; |
| 2185 | } |
| 2186 | EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_write); |
| 2187 | |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2188 | /**************************************** |
| 2189 | * user descriptor helpers * |
| 2190 | ****************************************/ |
| 2191 | |
| 2192 | int sptlrpc_current_user_desc_size(void) |
| 2193 | { |
| 2194 | int ngroups; |
| 2195 | |
| 2196 | ngroups = current_ngroups; |
| 2197 | |
| 2198 | if (ngroups > LUSTRE_MAX_GROUPS) |
| 2199 | ngroups = LUSTRE_MAX_GROUPS; |
| 2200 | return sptlrpc_user_desc_size(ngroups); |
| 2201 | } |
| 2202 | EXPORT_SYMBOL(sptlrpc_current_user_desc_size); |
| 2203 | |
| 2204 | int sptlrpc_pack_user_desc(struct lustre_msg *msg, int offset) |
| 2205 | { |
| 2206 | struct ptlrpc_user_desc *pud; |
| 2207 | |
| 2208 | pud = lustre_msg_buf(msg, offset, 0); |
| 2209 | |
Lidza Louina | db3c16c | 2016-05-16 14:51:42 -0400 | [diff] [blame] | 2210 | if (!pud) |
| 2211 | return -EINVAL; |
| 2212 | |
Peng Tao | 4b1a25f | 2013-07-15 22:27:14 +0800 | [diff] [blame] | 2213 | pud->pud_uid = from_kuid(&init_user_ns, current_uid()); |
| 2214 | pud->pud_gid = from_kgid(&init_user_ns, current_gid()); |
| 2215 | pud->pud_fsuid = from_kuid(&init_user_ns, current_fsuid()); |
| 2216 | pud->pud_fsgid = from_kgid(&init_user_ns, current_fsgid()); |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2217 | pud->pud_cap = cfs_curproc_cap_pack(); |
| 2218 | pud->pud_ngroups = (msg->lm_buflens[offset] - sizeof(*pud)) / 4; |
| 2219 | |
| 2220 | task_lock(current); |
| 2221 | if (pud->pud_ngroups > current_ngroups) |
| 2222 | pud->pud_ngroups = current_ngroups; |
| 2223 | memcpy(pud->pud_groups, current_cred()->group_info->blocks[0], |
| 2224 | pud->pud_ngroups * sizeof(__u32)); |
| 2225 | task_unlock(current); |
| 2226 | |
| 2227 | return 0; |
| 2228 | } |
| 2229 | EXPORT_SYMBOL(sptlrpc_pack_user_desc); |
| 2230 | |
| 2231 | int sptlrpc_unpack_user_desc(struct lustre_msg *msg, int offset, int swabbed) |
| 2232 | { |
| 2233 | struct ptlrpc_user_desc *pud; |
Chris Hanna | d0bfef3 | 2015-06-03 10:28:26 -0400 | [diff] [blame] | 2234 | int i; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2235 | |
| 2236 | pud = lustre_msg_buf(msg, offset, sizeof(*pud)); |
| 2237 | if (!pud) |
| 2238 | return -EINVAL; |
| 2239 | |
| 2240 | if (swabbed) { |
| 2241 | __swab32s(&pud->pud_uid); |
| 2242 | __swab32s(&pud->pud_gid); |
| 2243 | __swab32s(&pud->pud_fsuid); |
| 2244 | __swab32s(&pud->pud_fsgid); |
| 2245 | __swab32s(&pud->pud_cap); |
| 2246 | __swab32s(&pud->pud_ngroups); |
| 2247 | } |
| 2248 | |
| 2249 | if (pud->pud_ngroups > LUSTRE_MAX_GROUPS) { |
| 2250 | CERROR("%u groups is too large\n", pud->pud_ngroups); |
| 2251 | return -EINVAL; |
| 2252 | } |
| 2253 | |
| 2254 | if (sizeof(*pud) + pud->pud_ngroups * sizeof(__u32) > |
| 2255 | msg->lm_buflens[offset]) { |
| 2256 | CERROR("%u groups are claimed but bufsize only %u\n", |
| 2257 | pud->pud_ngroups, msg->lm_buflens[offset]); |
| 2258 | return -EINVAL; |
| 2259 | } |
| 2260 | |
| 2261 | if (swabbed) { |
| 2262 | for (i = 0; i < pud->pud_ngroups; i++) |
| 2263 | __swab32s(&pud->pud_groups[i]); |
| 2264 | } |
| 2265 | |
| 2266 | return 0; |
| 2267 | } |
| 2268 | EXPORT_SYMBOL(sptlrpc_unpack_user_desc); |
| 2269 | |
| 2270 | /**************************************** |
| 2271 | * misc helpers * |
| 2272 | ****************************************/ |
| 2273 | |
Greg Donald | aff9d8e | 2014-08-21 11:07:42 -0500 | [diff] [blame] | 2274 | const char *sec2target_str(struct ptlrpc_sec *sec) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2275 | { |
| 2276 | if (!sec || !sec->ps_import || !sec->ps_import->imp_obd) |
| 2277 | return "*"; |
| 2278 | if (sec_is_reverse(sec)) |
| 2279 | return "c"; |
| 2280 | return obd_uuid2str(&sec->ps_import->imp_obd->u.cli.cl_target_uuid); |
| 2281 | } |
| 2282 | EXPORT_SYMBOL(sec2target_str); |
| 2283 | |
| 2284 | /* |
| 2285 | * return true if the bulk data is protected |
| 2286 | */ |
Geliang Tang | 316bd5e | 2015-10-18 22:35:31 +0800 | [diff] [blame] | 2287 | bool sptlrpc_flavor_has_bulk(struct sptlrpc_flavor *flvr) |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2288 | { |
| 2289 | switch (SPTLRPC_FLVR_BULK_SVC(flvr->sf_rpc)) { |
| 2290 | case SPTLRPC_BULK_SVC_INTG: |
| 2291 | case SPTLRPC_BULK_SVC_PRIV: |
Geliang Tang | 316bd5e | 2015-10-18 22:35:31 +0800 | [diff] [blame] | 2292 | return true; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2293 | default: |
Geliang Tang | 316bd5e | 2015-10-18 22:35:31 +0800 | [diff] [blame] | 2294 | return false; |
Peng Tao | d7e09d0 | 2013-05-02 16:46:55 +0800 | [diff] [blame] | 2295 | } |
| 2296 | } |
| 2297 | EXPORT_SYMBOL(sptlrpc_flavor_has_bulk); |
| 2298 | |
| 2299 | /**************************************** |
| 2300 | * crypto API helper/alloc blkciper * |
| 2301 | ****************************************/ |
| 2302 | |
| 2303 | /**************************************** |
| 2304 | * initialize/finalize * |
| 2305 | ****************************************/ |
| 2306 | |
| 2307 | int sptlrpc_init(void) |
| 2308 | { |
| 2309 | int rc; |
| 2310 | |
| 2311 | rwlock_init(&policy_lock); |
| 2312 | |
| 2313 | rc = sptlrpc_gc_init(); |
| 2314 | if (rc) |
| 2315 | goto out; |
| 2316 | |
| 2317 | rc = sptlrpc_conf_init(); |
| 2318 | if (rc) |
| 2319 | goto out_gc; |
| 2320 | |
| 2321 | rc = sptlrpc_enc_pool_init(); |
| 2322 | if (rc) |
| 2323 | goto out_conf; |
| 2324 | |
| 2325 | rc = sptlrpc_null_init(); |
| 2326 | if (rc) |
| 2327 | goto out_pool; |
| 2328 | |
| 2329 | rc = sptlrpc_plain_init(); |
| 2330 | if (rc) |
| 2331 | goto out_null; |
| 2332 | |
| 2333 | rc = sptlrpc_lproc_init(); |
| 2334 | if (rc) |
| 2335 | goto out_plain; |
| 2336 | |
| 2337 | return 0; |
| 2338 | |
| 2339 | out_plain: |
| 2340 | sptlrpc_plain_fini(); |
| 2341 | out_null: |
| 2342 | sptlrpc_null_fini(); |
| 2343 | out_pool: |
| 2344 | sptlrpc_enc_pool_fini(); |
| 2345 | out_conf: |
| 2346 | sptlrpc_conf_fini(); |
| 2347 | out_gc: |
| 2348 | sptlrpc_gc_fini(); |
| 2349 | out: |
| 2350 | return rc; |
| 2351 | } |
| 2352 | |
| 2353 | void sptlrpc_fini(void) |
| 2354 | { |
| 2355 | sptlrpc_lproc_fini(); |
| 2356 | sptlrpc_plain_fini(); |
| 2357 | sptlrpc_null_fini(); |
| 2358 | sptlrpc_enc_pool_fini(); |
| 2359 | sptlrpc_conf_fini(); |
| 2360 | sptlrpc_gc_fini(); |
| 2361 | } |