-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Eric Mei <ericm@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_SEC
-#include <libcfs/libcfs.h>
-#ifndef __KERNEL__
-#include <liblustre.h>
-#include <libcfs/list.h>
-#else
+#include <linux/user_namespace.h>
+#ifdef HAVE_UIDGID_HEADER
+# include <linux/uidgid.h>
+#endif
#include <linux/crypto.h>
#include <linux/key.h>
-#endif
+#include <libcfs/libcfs.h>
#include <obd.h>
#include <obd_class.h>
#include <obd_support.h>
#include "ptlrpc_internal.h"
-/***********************************************
- * policy registers *
- ***********************************************/
+static int send_sepol;
+module_param(send_sepol, int, 0644);
+MODULE_PARM_DESC(send_sepol, "Client sends SELinux policy status");
-static cfs_rwlock_t policy_lock;
+/*
+ * policy registers
+ */
+
+static rwlock_t policy_lock;
static struct ptlrpc_sec_policy *policies[SPTLRPC_POLICY_MAX] = {
- NULL,
+ NULL,
};
int sptlrpc_register_policy(struct ptlrpc_sec_policy *policy)
{
- __u16 number = policy->sp_policy;
+ __u16 number = policy->sp_policy;
- LASSERT(policy->sp_name);
- LASSERT(policy->sp_cops);
- LASSERT(policy->sp_sops);
+ LASSERT(policy->sp_name);
+ LASSERT(policy->sp_cops);
+ LASSERT(policy->sp_sops);
- if (number >= SPTLRPC_POLICY_MAX)
- return -EINVAL;
+ if (number >= SPTLRPC_POLICY_MAX)
+ return -EINVAL;
- cfs_write_lock(&policy_lock);
- if (unlikely(policies[number])) {
- cfs_write_unlock(&policy_lock);
- return -EALREADY;
- }
- policies[number] = policy;
- cfs_write_unlock(&policy_lock);
+ write_lock(&policy_lock);
+ if (unlikely(policies[number])) {
+ write_unlock(&policy_lock);
+ return -EALREADY;
+ }
+ policies[number] = policy;
+ write_unlock(&policy_lock);
- CDEBUG(D_SEC, "%s: registered\n", policy->sp_name);
- return 0;
+ CDEBUG(D_SEC, "%s: registered\n", policy->sp_name);
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_register_policy);
int sptlrpc_unregister_policy(struct ptlrpc_sec_policy *policy)
{
- __u16 number = policy->sp_policy;
+ __u16 number = policy->sp_policy;
- LASSERT(number < SPTLRPC_POLICY_MAX);
+ LASSERT(number < SPTLRPC_POLICY_MAX);
- cfs_write_lock(&policy_lock);
- if (unlikely(policies[number] == NULL)) {
- cfs_write_unlock(&policy_lock);
- CERROR("%s: already unregistered\n", policy->sp_name);
- return -EINVAL;
- }
+ write_lock(&policy_lock);
+ if (unlikely(policies[number] == NULL)) {
+ write_unlock(&policy_lock);
+ CERROR("%s: already unregistered\n", policy->sp_name);
+ return -EINVAL;
+ }
- LASSERT(policies[number] == policy);
- policies[number] = NULL;
- cfs_write_unlock(&policy_lock);
+ LASSERT(policies[number] == policy);
+ policies[number] = NULL;
+ write_unlock(&policy_lock);
- CDEBUG(D_SEC, "%s: unregistered\n", policy->sp_name);
- return 0;
+ CDEBUG(D_SEC, "%s: unregistered\n", policy->sp_name);
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_unregister_policy);
static
-struct ptlrpc_sec_policy * sptlrpc_wireflavor2policy(__u32 flavor)
-{
- static CFS_DECLARE_MUTEX(load_mutex);
- static cfs_atomic_t loaded = CFS_ATOMIC_INIT(0);
- struct ptlrpc_sec_policy *policy;
- __u16 number = SPTLRPC_FLVR_POLICY(flavor);
- __u16 flag = 0;
-
- if (number >= SPTLRPC_POLICY_MAX)
- return NULL;
-
- while (1) {
- cfs_read_lock(&policy_lock);
- policy = policies[number];
- if (policy && !cfs_try_module_get(policy->sp_owner))
- policy = NULL;
- if (policy == NULL)
- flag = cfs_atomic_read(&loaded);
- cfs_read_unlock(&policy_lock);
-
- if (policy != NULL || flag != 0 ||
- number != SPTLRPC_POLICY_GSS)
- break;
-
- /* try to load gss module, once */
- cfs_mutex_down(&load_mutex);
- if (cfs_atomic_read(&loaded) == 0) {
- if (cfs_request_module("ptlrpc_gss") == 0)
- CWARN("module ptlrpc_gss loaded on demand\n");
- else
- CERROR("Unable to load module ptlrpc_gss\n");
-
- cfs_atomic_set(&loaded, 1);
- }
- cfs_mutex_up(&load_mutex);
- }
-
- return policy;
+struct ptlrpc_sec_policy *sptlrpc_wireflavor2policy(__u32 flavor)
+{
+ static DEFINE_MUTEX(load_mutex);
+ static atomic_t loaded = ATOMIC_INIT(0);
+ struct ptlrpc_sec_policy *policy;
+ __u16 number = SPTLRPC_FLVR_POLICY(flavor);
+ __u16 flag = 0;
+
+ if (number >= SPTLRPC_POLICY_MAX)
+ return NULL;
+
+ while (1) {
+ read_lock(&policy_lock);
+ policy = policies[number];
+ if (policy && !try_module_get(policy->sp_owner))
+ policy = NULL;
+ if (policy == NULL)
+ flag = atomic_read(&loaded);
+ read_unlock(&policy_lock);
+
+ if (policy != NULL || flag != 0 ||
+ number != SPTLRPC_POLICY_GSS)
+ break;
+
+ /* try to load gss module, once */
+ mutex_lock(&load_mutex);
+ if (atomic_read(&loaded) == 0) {
+ if (request_module("ptlrpc_gss") == 0)
+ CDEBUG(D_SEC,
+ "module ptlrpc_gss loaded on demand\n");
+ else
+ CERROR("Unable to load module ptlrpc_gss\n");
+
+ atomic_set(&loaded, 1);
+ }
+ mutex_unlock(&load_mutex);
+ }
+
+ return policy;
}
__u32 sptlrpc_name2flavor_base(const char *name)
{
- if (!strcmp(name, "null"))
- return SPTLRPC_FLVR_NULL;
- if (!strcmp(name, "plain"))
- return SPTLRPC_FLVR_PLAIN;
- if (!strcmp(name, "krb5n"))
- return SPTLRPC_FLVR_KRB5N;
- if (!strcmp(name, "krb5a"))
- return SPTLRPC_FLVR_KRB5A;
- if (!strcmp(name, "krb5i"))
- return SPTLRPC_FLVR_KRB5I;
- if (!strcmp(name, "krb5p"))
- return SPTLRPC_FLVR_KRB5P;
-
- return SPTLRPC_FLVR_INVALID;
+ if (!strcmp(name, "null"))
+ return SPTLRPC_FLVR_NULL;
+ if (!strcmp(name, "plain"))
+ return SPTLRPC_FLVR_PLAIN;
+ if (!strcmp(name, "gssnull"))
+ return SPTLRPC_FLVR_GSSNULL;
+ if (!strcmp(name, "krb5n"))
+ return SPTLRPC_FLVR_KRB5N;
+ if (!strcmp(name, "krb5a"))
+ return SPTLRPC_FLVR_KRB5A;
+ if (!strcmp(name, "krb5i"))
+ return SPTLRPC_FLVR_KRB5I;
+ if (!strcmp(name, "krb5p"))
+ return SPTLRPC_FLVR_KRB5P;
+ if (!strcmp(name, "skn"))
+ return SPTLRPC_FLVR_SKN;
+ if (!strcmp(name, "ska"))
+ return SPTLRPC_FLVR_SKA;
+ if (!strcmp(name, "ski"))
+ return SPTLRPC_FLVR_SKI;
+ if (!strcmp(name, "skpi"))
+ return SPTLRPC_FLVR_SKPI;
+
+ return SPTLRPC_FLVR_INVALID;
}
EXPORT_SYMBOL(sptlrpc_name2flavor_base);
const char *sptlrpc_flavor2name_base(__u32 flvr)
{
- __u32 base = SPTLRPC_FLVR_BASE(flvr);
-
- if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL))
- return "null";
- else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_PLAIN))
- return "plain";
- else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5N))
- return "krb5n";
- else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5A))
- return "krb5a";
- else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5I))
- return "krb5i";
- else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5P))
- return "krb5p";
-
- CERROR("invalid wire flavor 0x%x\n", flvr);
- return "invalid";
+ __u32 base = SPTLRPC_FLVR_BASE(flvr);
+
+ if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL))
+ return "null";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_PLAIN))
+ return "plain";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_GSSNULL))
+ return "gssnull";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5N))
+ return "krb5n";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5A))
+ return "krb5a";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5I))
+ return "krb5i";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_KRB5P))
+ return "krb5p";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_SKN))
+ return "skn";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_SKA))
+ return "ska";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_SKI))
+ return "ski";
+ else if (base == SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_SKPI))
+ return "skpi";
+
+ CERROR("invalid wire flavor 0x%x\n", flvr);
+ return "invalid";
}
EXPORT_SYMBOL(sptlrpc_flavor2name_base);
char *sptlrpc_flavor2name_bulk(struct sptlrpc_flavor *sf,
- char *buf, int bufsize)
+ char *buf, int bufsize)
{
- if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN)
- snprintf(buf, bufsize, "hash:%s",
- sptlrpc_get_hash_name(sf->u_bulk.hash.hash_alg));
- else
- snprintf(buf, bufsize, "%s",
- sptlrpc_flavor2name_base(sf->sf_rpc));
+ if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN)
+ snprintf(buf, bufsize, "hash:%s",
+ sptlrpc_get_hash_name(sf->u_bulk.hash.hash_alg));
+ else
+ snprintf(buf, bufsize, "%s",
+ sptlrpc_flavor2name_base(sf->sf_rpc));
- buf[bufsize - 1] = '\0';
- return buf;
+ buf[bufsize - 1] = '\0';
+ return buf;
}
EXPORT_SYMBOL(sptlrpc_flavor2name_bulk);
char *sptlrpc_flavor2name(struct sptlrpc_flavor *sf, char *buf, int bufsize)
{
- snprintf(buf, bufsize, "%s", sptlrpc_flavor2name_base(sf->sf_rpc));
+ snprintf(buf, bufsize, "%s", sptlrpc_flavor2name_base(sf->sf_rpc));
- /*
- * currently we don't support customized bulk specification for
- * flavors other than plain
- */
- if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN) {
- char bspec[16];
+ /*
+ * currently we don't support customized bulk specification for
+ * flavors other than plain
+ */
+ if (SPTLRPC_FLVR_POLICY(sf->sf_rpc) == SPTLRPC_POLICY_PLAIN) {
+ char bspec[16];
- bspec[0] = '-';
- sptlrpc_flavor2name_bulk(sf, &bspec[1], sizeof(bspec) - 1);
- strncat(buf, bspec, bufsize);
- }
+ bspec[0] = '-';
+ sptlrpc_flavor2name_bulk(sf, &bspec[1], sizeof(bspec) - 1);
+ strncat(buf, bspec, bufsize);
+ }
- buf[bufsize - 1] = '\0';
- return buf;
+ buf[bufsize - 1] = '\0';
+ return buf;
}
EXPORT_SYMBOL(sptlrpc_flavor2name);
char *sptlrpc_secflags2str(__u32 flags, char *buf, int bufsize)
{
- buf[0] = '\0';
+ buf[0] = '\0';
- if (flags & PTLRPC_SEC_FL_REVERSE)
- strncat(buf, "reverse,", bufsize);
- if (flags & PTLRPC_SEC_FL_ROOTONLY)
- strncat(buf, "rootonly,", bufsize);
- if (flags & PTLRPC_SEC_FL_UDESC)
- strncat(buf, "udesc,", bufsize);
- if (flags & PTLRPC_SEC_FL_BULK)
- strncat(buf, "bulk,", bufsize);
- if (buf[0] == '\0')
- strncat(buf, "-,", bufsize);
+ if (flags & PTLRPC_SEC_FL_REVERSE)
+ strlcat(buf, "reverse,", bufsize);
+ if (flags & PTLRPC_SEC_FL_ROOTONLY)
+ strlcat(buf, "rootonly,", bufsize);
+ if (flags & PTLRPC_SEC_FL_UDESC)
+ strlcat(buf, "udesc,", bufsize);
+ if (flags & PTLRPC_SEC_FL_BULK)
+ strlcat(buf, "bulk,", bufsize);
+ if (buf[0] == '\0')
+ strlcat(buf, "-,", bufsize);
- buf[bufsize - 1] = '\0';
- return buf;
+ return buf;
}
EXPORT_SYMBOL(sptlrpc_secflags2str);
-/**************************************************
- * client context APIs *
- **************************************************/
+/*
+ * client context APIs
+ */
static
struct ptlrpc_cli_ctx *get_my_ctx(struct ptlrpc_sec *sec)
{
- struct vfs_cred vcred;
- int create = 1, remove_dead = 1;
+ struct vfs_cred vcred;
+ int create = 1, remove_dead = 1;
- LASSERT(sec);
- LASSERT(sec->ps_policy->sp_cops->lookup_ctx);
+ LASSERT(sec);
+ LASSERT(sec->ps_policy->sp_cops->lookup_ctx);
- if (sec->ps_flvr.sf_flags & (PTLRPC_SEC_FL_REVERSE |
- PTLRPC_SEC_FL_ROOTONLY)) {
- vcred.vc_uid = 0;
- vcred.vc_gid = 0;
- if (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_REVERSE) {
- create = 0;
- remove_dead = 0;
- }
- } else {
- vcred.vc_uid = cfs_current()->uid;
- vcred.vc_gid = cfs_current()->gid;
- }
+ if (sec->ps_flvr.sf_flags & (PTLRPC_SEC_FL_REVERSE |
+ PTLRPC_SEC_FL_ROOTONLY)) {
+ vcred.vc_uid = 0;
+ vcred.vc_gid = 0;
+ if (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_REVERSE) {
+ create = 0;
+ remove_dead = 0;
+ }
+ } else {
+ vcred.vc_uid = from_kuid(&init_user_ns, current_uid());
+ vcred.vc_gid = from_kgid(&init_user_ns, current_gid());
+ }
- return sec->ps_policy->sp_cops->lookup_ctx(sec, &vcred,
- create, remove_dead);
+ return sec->ps_policy->sp_cops->lookup_ctx(sec, &vcred, create,
+ remove_dead);
}
struct ptlrpc_cli_ctx *sptlrpc_cli_ctx_get(struct ptlrpc_cli_ctx *ctx)
{
- LASSERT(cfs_atomic_read(&ctx->cc_refcount) > 0);
- cfs_atomic_inc(&ctx->cc_refcount);
- return ctx;
+ atomic_inc(&ctx->cc_refcount);
+ return ctx;
}
EXPORT_SYMBOL(sptlrpc_cli_ctx_get);
void sptlrpc_cli_ctx_put(struct ptlrpc_cli_ctx *ctx, int sync)
{
- struct ptlrpc_sec *sec = ctx->cc_sec;
+ struct ptlrpc_sec *sec = ctx->cc_sec;
- LASSERT(sec);
- LASSERT(cfs_atomic_read(&ctx->cc_refcount));
+ LASSERT(sec);
+ LASSERT_ATOMIC_POS(&ctx->cc_refcount);
- if (!cfs_atomic_dec_and_test(&ctx->cc_refcount))
- return;
+ if (!atomic_dec_and_test(&ctx->cc_refcount))
+ return;
- sec->ps_policy->sp_cops->release_ctx(sec, ctx, sync);
+ sec->ps_policy->sp_cops->release_ctx(sec, ctx, sync);
}
EXPORT_SYMBOL(sptlrpc_cli_ctx_put);
-/*
- * expire the context immediately.
- * the caller must hold at least 1 ref on the ctx.
+/**
+ * Expire the client context immediately.
+ *
+ * \pre Caller must hold at least 1 reference on the \a ctx.
*/
void sptlrpc_cli_ctx_expire(struct ptlrpc_cli_ctx *ctx)
{
- LASSERT(ctx->cc_ops->die);
- ctx->cc_ops->die(ctx, 0);
+ LASSERT(ctx->cc_ops->die);
+ ctx->cc_ops->die(ctx, 0);
}
EXPORT_SYMBOL(sptlrpc_cli_ctx_expire);
+/**
+ * To wake up the threads who are waiting for this client context. Called
+ * after some status change happened on \a ctx.
+ */
void sptlrpc_cli_ctx_wakeup(struct ptlrpc_cli_ctx *ctx)
{
- struct ptlrpc_request *req, *next;
+ struct ptlrpc_request *req, *next;
- cfs_spin_lock(&ctx->cc_lock);
- cfs_list_for_each_entry_safe(req, next, &ctx->cc_req_list,
- rq_ctx_chain) {
- cfs_list_del_init(&req->rq_ctx_chain);
- ptlrpc_client_wake_req(req);
- }
- cfs_spin_unlock(&ctx->cc_lock);
+ spin_lock(&ctx->cc_lock);
+ list_for_each_entry_safe(req, next, &ctx->cc_req_list,
+ rq_ctx_chain) {
+ list_del_init(&req->rq_ctx_chain);
+ ptlrpc_client_wake_req(req);
+ }
+ spin_unlock(&ctx->cc_lock);
}
EXPORT_SYMBOL(sptlrpc_cli_ctx_wakeup);
int sptlrpc_cli_ctx_display(struct ptlrpc_cli_ctx *ctx, char *buf, int bufsize)
{
- LASSERT(ctx->cc_ops);
+ LASSERT(ctx->cc_ops);
- if (ctx->cc_ops->display == NULL)
- return 0;
+ if (ctx->cc_ops->display == NULL)
+ return 0;
- return ctx->cc_ops->display(ctx, buf, bufsize);
+ return ctx->cc_ops->display(ctx, buf, bufsize);
}
static int import_sec_check_expire(struct obd_import *imp)
{
- int adapt = 0;
+ int adapt = 0;
- cfs_spin_lock(&imp->imp_lock);
- if (imp->imp_sec_expire &&
- imp->imp_sec_expire < cfs_time_current_sec()) {
- adapt = 1;
- imp->imp_sec_expire = 0;
- }
- cfs_spin_unlock(&imp->imp_lock);
+ write_lock(&imp->imp_sec_lock);
+ if (imp->imp_sec_expire &&
+ imp->imp_sec_expire < ktime_get_real_seconds()) {
+ adapt = 1;
+ imp->imp_sec_expire = 0;
+ }
+ write_unlock(&imp->imp_sec_lock);
- if (!adapt)
- return 0;
+ if (!adapt)
+ return 0;
- CDEBUG(D_SEC, "found delayed sec adapt expired, do it now\n");
- return sptlrpc_import_sec_adapt(imp, NULL, 0);
+ CDEBUG(D_SEC, "found delayed sec adapt expired, do it now\n");
+ return sptlrpc_import_sec_adapt(imp, NULL, NULL);
}
+/**
+ * Get and validate the client side ptlrpc security facilities from
+ * \a imp. There is a race condition on client reconnect when the import is
+ * being destroyed while there are outstanding client bound requests. In
+ * this case do not output any error messages if import secuity is not
+ * found.
+ *
+ * \param[in] imp obd import associated with client
+ * \param[out] sec client side ptlrpc security
+ *
+ * \retval 0 if security retrieved successfully
+ * \retval -ve errno if there was a problem
+ */
static int import_sec_validate_get(struct obd_import *imp,
- struct ptlrpc_sec **sec)
+ struct ptlrpc_sec **sec)
{
- int rc;
+ int rc;
- if (unlikely(imp->imp_sec_expire)) {
- rc = import_sec_check_expire(imp);
- if (rc)
- return rc;
- }
+ if (unlikely(imp->imp_sec_expire)) {
+ rc = import_sec_check_expire(imp);
+ if (rc)
+ return rc;
+ }
- *sec = sptlrpc_import_sec_ref(imp);
- if (*sec == NULL) {
- CERROR("import %p (%s) with no sec\n",
- imp, ptlrpc_import_state_name(imp->imp_state));
- return -EACCES;
- }
+ *sec = sptlrpc_import_sec_ref(imp);
+ if (*sec == NULL) {
+ CERROR("import %p (%s) with no sec\n",
+ imp, ptlrpc_import_state_name(imp->imp_state));
+ return -EACCES;
+ }
- if (unlikely((*sec)->ps_dying)) {
- CERROR("attempt to use dying sec %p\n", sec);
- sptlrpc_sec_put(*sec);
- return -EACCES;
- }
+ if (unlikely((*sec)->ps_dying)) {
+ CERROR("attempt to use dying sec %p\n", sec);
+ sptlrpc_sec_put(*sec);
+ return -EACCES;
+ }
- return 0;
+ return 0;
}
+/**
+ * Given a \a req, find or allocate an appropriate context for it.
+ * \pre req->rq_cli_ctx == NULL.
+ *
+ * \retval 0 succeed, and req->rq_cli_ctx is set.
+ * \retval -ev error number, and req->rq_cli_ctx == NULL.
+ */
int sptlrpc_req_get_ctx(struct ptlrpc_request *req)
{
- struct obd_import *imp = req->rq_import;
- struct ptlrpc_sec *sec;
- int rc;
- ENTRY;
+ struct obd_import *imp = req->rq_import;
+ struct ptlrpc_sec *sec;
+ int rc;
- LASSERT(!req->rq_cli_ctx);
- LASSERT(imp);
+ ENTRY;
- rc = import_sec_validate_get(imp, &sec);
- if (rc)
- RETURN(rc);
+ LASSERT(!req->rq_cli_ctx);
+ LASSERT(imp);
- req->rq_cli_ctx = get_my_ctx(sec);
+ rc = import_sec_validate_get(imp, &sec);
+ if (rc)
+ RETURN(rc);
- sptlrpc_sec_put(sec);
+ req->rq_cli_ctx = get_my_ctx(sec);
- if (!req->rq_cli_ctx) {
- CERROR("req %p: fail to get context\n", req);
- RETURN(-ENOMEM);
- }
+ sptlrpc_sec_put(sec);
- RETURN(0);
+ if (!req->rq_cli_ctx) {
+ CERROR("req %p: fail to get context\n", req);
+ RETURN(-ECONNREFUSED);
+ }
+
+ RETURN(0);
}
-/*
- * if @sync == 0, this function should return quickly without sleep;
- * otherwise might trigger ctx destroying rpc to server.
+/**
+ * Drop the context for \a req.
+ * \pre req->rq_cli_ctx != NULL.
+ * \post req->rq_cli_ctx == NULL.
+ *
+ * If \a sync == 0, this function should return quickly without sleep;
+ * otherwise it might trigger and wait for the whole process of sending
+ * an context-destroying rpc to server.
*/
void sptlrpc_req_put_ctx(struct ptlrpc_request *req, int sync)
{
- ENTRY;
+ ENTRY;
- LASSERT(req);
- LASSERT(req->rq_cli_ctx);
+ LASSERT(req);
+ LASSERT(req->rq_cli_ctx);
- /* request might be asked to release earlier while still
- * in the context waiting list.
- */
- if (!cfs_list_empty(&req->rq_ctx_chain)) {
- cfs_spin_lock(&req->rq_cli_ctx->cc_lock);
- cfs_list_del_init(&req->rq_ctx_chain);
- cfs_spin_unlock(&req->rq_cli_ctx->cc_lock);
- }
+ /*
+ * request might be asked to release earlier while still
+ * in the context waiting list.
+ */
+ if (!list_empty(&req->rq_ctx_chain)) {
+ spin_lock(&req->rq_cli_ctx->cc_lock);
+ list_del_init(&req->rq_ctx_chain);
+ spin_unlock(&req->rq_cli_ctx->cc_lock);
+ }
- sptlrpc_cli_ctx_put(req->rq_cli_ctx, sync);
- req->rq_cli_ctx = NULL;
- EXIT;
+ sptlrpc_cli_ctx_put(req->rq_cli_ctx, sync);
+ req->rq_cli_ctx = NULL;
+ EXIT;
}
static
int sptlrpc_req_ctx_switch(struct ptlrpc_request *req,
- struct ptlrpc_cli_ctx *oldctx,
- struct ptlrpc_cli_ctx *newctx)
-{
- struct sptlrpc_flavor old_flvr;
- char *reqmsg;
- int reqmsg_size;
- int rc;
-
- LASSERT(req->rq_reqmsg);
- LASSERT(req->rq_reqlen);
- LASSERT(req->rq_replen);
-
- CWARN("req %p: switch ctx %p(%u->%s) -> %p(%u->%s), "
- "switch sec %p(%s) -> %p(%s)\n", req,
- oldctx, oldctx->cc_vcred.vc_uid, sec2target_str(oldctx->cc_sec),
- newctx, newctx->cc_vcred.vc_uid, sec2target_str(newctx->cc_sec),
- oldctx->cc_sec, oldctx->cc_sec->ps_policy->sp_name,
- newctx->cc_sec, newctx->cc_sec->ps_policy->sp_name);
-
- /* save flavor */
- old_flvr = req->rq_flvr;
-
- /* save request message */
- reqmsg_size = req->rq_reqlen;
- OBD_ALLOC(reqmsg, reqmsg_size);
- if (reqmsg == NULL)
- return -ENOMEM;
- memcpy(reqmsg, req->rq_reqmsg, reqmsg_size);
-
- /* release old req/rep buf */
- req->rq_cli_ctx = oldctx;
- sptlrpc_cli_free_reqbuf(req);
- sptlrpc_cli_free_repbuf(req);
- req->rq_cli_ctx = newctx;
-
- /* recalculate the flavor */
- sptlrpc_req_set_flavor(req, 0);
-
- /* alloc new request buffer
- * we don't need to alloc reply buffer here, leave it to the
- * rest procedure of ptlrpc
- */
- rc = sptlrpc_cli_alloc_reqbuf(req, reqmsg_size);
- if (!rc) {
- LASSERT(req->rq_reqmsg);
- memcpy(req->rq_reqmsg, reqmsg, reqmsg_size);
- } else {
- CWARN("failed to alloc reqbuf: %d\n", rc);
- req->rq_flvr = old_flvr;
- }
-
- OBD_FREE(reqmsg, reqmsg_size);
- return rc;
+ struct ptlrpc_cli_ctx *oldctx,
+ struct ptlrpc_cli_ctx *newctx)
+{
+ struct sptlrpc_flavor old_flvr;
+ char *reqmsg = NULL; /* to workaround old gcc */
+ int reqmsg_size;
+ int rc = 0;
+
+ LASSERT(req->rq_reqmsg);
+ LASSERT(req->rq_reqlen);
+ LASSERT(req->rq_replen);
+
+ CDEBUG(D_SEC,
+ "req %p: switch ctx %p(%u->%s) -> %p(%u->%s), switch sec %p(%s) -> %p(%s)\n",
+ req, oldctx, oldctx->cc_vcred.vc_uid,
+ sec2target_str(oldctx->cc_sec), newctx, newctx->cc_vcred.vc_uid,
+ sec2target_str(newctx->cc_sec), oldctx->cc_sec,
+ oldctx->cc_sec->ps_policy->sp_name, newctx->cc_sec,
+ newctx->cc_sec->ps_policy->sp_name);
+
+ /* save flavor */
+ old_flvr = req->rq_flvr;
+
+ /* save request message */
+ reqmsg_size = req->rq_reqlen;
+ if (reqmsg_size != 0) {
+ OBD_ALLOC_LARGE(reqmsg, reqmsg_size);
+ if (reqmsg == NULL)
+ return -ENOMEM;
+ memcpy(reqmsg, req->rq_reqmsg, reqmsg_size);
+ }
+
+ /* release old req/rep buf */
+ req->rq_cli_ctx = oldctx;
+ sptlrpc_cli_free_reqbuf(req);
+ sptlrpc_cli_free_repbuf(req);
+ req->rq_cli_ctx = newctx;
+
+ /* recalculate the flavor */
+ sptlrpc_req_set_flavor(req, 0);
+
+ /*
+ * alloc new request buffer
+ * we don't need to alloc reply buffer here, leave it to the
+ * rest procedure of ptlrpc
+ */
+ if (reqmsg_size != 0) {
+ rc = sptlrpc_cli_alloc_reqbuf(req, reqmsg_size);
+ if (!rc) {
+ LASSERT(req->rq_reqmsg);
+ memcpy(req->rq_reqmsg, reqmsg, reqmsg_size);
+ } else {
+ CWARN("failed to alloc reqbuf: %d\n", rc);
+ req->rq_flvr = old_flvr;
+ }
+
+ OBD_FREE_LARGE(reqmsg, reqmsg_size);
+ }
+ return rc;
}
/**
- * if current context has died, or if we resend after flavor switched,
- * call this func to switch context. if no switch is needed, request
- * will end up with the same context.
+ * If current context of \a req is dead somehow, e.g. we just switched flavor
+ * thus marked original contexts dead, we'll find a new context for it. if
+ * no switch is needed, \a req will end up with the same context.
*
- * request must have a context. in any case of failure, restore the
- * restore the old one - a request must have a context.
+ * \note a request must have a context, to keep other parts of code happy.
+ * In any case of failure during the switching, we must restore the old one.
*/
int sptlrpc_req_replace_dead_ctx(struct ptlrpc_request *req)
{
- struct ptlrpc_cli_ctx *oldctx = req->rq_cli_ctx;
- struct ptlrpc_cli_ctx *newctx;
- int rc;
- ENTRY;
-
- LASSERT(oldctx);
-
- sptlrpc_cli_ctx_get(oldctx);
- sptlrpc_req_put_ctx(req, 0);
-
- rc = sptlrpc_req_get_ctx(req);
- if (unlikely(rc)) {
- LASSERT(!req->rq_cli_ctx);
-
- /* restore old ctx */
- req->rq_cli_ctx = oldctx;
- RETURN(rc);
- }
-
- newctx = req->rq_cli_ctx;
- LASSERT(newctx);
-
- if (unlikely(newctx == oldctx &&
- cfs_test_bit(PTLRPC_CTX_DEAD_BIT, &oldctx->cc_flags))) {
- /*
- * still get the old dead ctx, usually means system too busy
- */
- CWARN("ctx (%p, fl %lx) doesn't switch, relax a little bit\n",
- newctx, newctx->cc_flags);
-
- cfs_schedule_timeout_and_set_state(CFS_TASK_INTERRUPTIBLE,
- CFS_HZ);
- } else {
- /*
- * it's possible newctx == oldctx if we're switching
- * subflavor with the same sec.
- */
- rc = sptlrpc_req_ctx_switch(req, oldctx, newctx);
- if (rc) {
- /* restore old ctx */
- sptlrpc_req_put_ctx(req, 0);
- req->rq_cli_ctx = oldctx;
- RETURN(rc);
- }
-
- LASSERT(req->rq_cli_ctx == newctx);
- }
-
- sptlrpc_cli_ctx_put(oldctx, 1);
- RETURN(0);
+ struct ptlrpc_cli_ctx *oldctx = req->rq_cli_ctx;
+ struct ptlrpc_cli_ctx *newctx;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(oldctx);
+
+ sptlrpc_cli_ctx_get(oldctx);
+ sptlrpc_req_put_ctx(req, 0);
+
+ rc = sptlrpc_req_get_ctx(req);
+ if (unlikely(rc)) {
+ LASSERT(!req->rq_cli_ctx);
+
+ /* restore old ctx */
+ req->rq_cli_ctx = oldctx;
+ RETURN(rc);
+ }
+
+ newctx = req->rq_cli_ctx;
+ LASSERT(newctx);
+
+ if (unlikely(newctx == oldctx &&
+ test_bit(PTLRPC_CTX_DEAD_BIT, &oldctx->cc_flags))) {
+ /*
+ * still get the old dead ctx, usually means system too busy
+ */
+ CDEBUG(D_SEC,
+ "ctx (%p, fl %lx) doesn't switch, relax a little bit\n",
+ newctx, newctx->cc_flags);
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC));
+ } else if (unlikely(test_bit(PTLRPC_CTX_UPTODATE_BIT, &newctx->cc_flags)
+ == 0)) {
+ /*
+ * new ctx not up to date yet
+ */
+ CDEBUG(D_SEC,
+ "ctx (%p, fl %lx) doesn't switch, not up to date yet\n",
+ newctx, newctx->cc_flags);
+ } else {
+ /*
+ * it's possible newctx == oldctx if we're switching
+ * subflavor with the same sec.
+ */
+ rc = sptlrpc_req_ctx_switch(req, oldctx, newctx);
+ if (rc) {
+ /* restore old ctx */
+ sptlrpc_req_put_ctx(req, 0);
+ req->rq_cli_ctx = oldctx;
+ RETURN(rc);
+ }
+
+ LASSERT(req->rq_cli_ctx == newctx);
+ }
+
+ sptlrpc_cli_ctx_put(oldctx, 1);
+ RETURN(0);
}
EXPORT_SYMBOL(sptlrpc_req_replace_dead_ctx);
static
int ctx_check_refresh(struct ptlrpc_cli_ctx *ctx)
{
- if (cli_ctx_is_refreshed(ctx))
- return 1;
- return 0;
+ if (cli_ctx_is_refreshed(ctx))
+ return 1;
+ return 0;
}
static
int ctx_refresh_timeout(void *data)
{
- struct ptlrpc_request *req = data;
- int rc;
+ struct ptlrpc_request *req = data;
+ int rc;
- /* conn_cnt is needed in expire_one_request */
- lustre_msg_set_conn_cnt(req->rq_reqmsg, req->rq_import->imp_conn_cnt);
+ /* conn_cnt is needed in expire_one_request */
+ lustre_msg_set_conn_cnt(req->rq_reqmsg, req->rq_import->imp_conn_cnt);
- rc = ptlrpc_expire_one_request(req, 1);
- /* if we started recovery, we should mark this ctx dead; otherwise
- * in case of lgssd died nobody would retire this ctx, following
- * connecting will still find the same ctx thus cause deadlock.
- * there's an assumption that expire time of the request should be
- * later than the context refresh expire time.
- */
- if (rc == 0)
- req->rq_cli_ctx->cc_ops->die(req->rq_cli_ctx, 0);
- return rc;
+ rc = ptlrpc_expire_one_request(req, 1);
+ /*
+ * if we started recovery, we should mark this ctx dead; otherwise
+ * in case of lgssd died nobody would retire this ctx, following
+ * connecting will still find the same ctx thus cause deadlock.
+ * there's an assumption that expire time of the request should be
+ * later than the context refresh expire time.
+ */
+ if (rc == 0)
+ req->rq_cli_ctx->cc_ops->die(req->rq_cli_ctx, 0);
+ return rc;
}
static
void ctx_refresh_interrupt(void *data)
{
- struct ptlrpc_request *req = data;
+ struct ptlrpc_request *req = data;
- cfs_spin_lock(&req->rq_lock);
- req->rq_intr = 1;
- cfs_spin_unlock(&req->rq_lock);
+ spin_lock(&req->rq_lock);
+ req->rq_intr = 1;
+ spin_unlock(&req->rq_lock);
}
static
void req_off_ctx_list(struct ptlrpc_request *req, struct ptlrpc_cli_ctx *ctx)
{
- cfs_spin_lock(&ctx->cc_lock);
- if (!cfs_list_empty(&req->rq_ctx_chain))
- cfs_list_del_init(&req->rq_ctx_chain);
- cfs_spin_unlock(&ctx->cc_lock);
+ spin_lock(&ctx->cc_lock);
+ if (!list_empty(&req->rq_ctx_chain))
+ list_del_init(&req->rq_ctx_chain);
+ spin_unlock(&ctx->cc_lock);
}
-/*
- * the status of context could be subject to be changed by other threads at any
- * time. we allow this race. but once we return with 0, the caller will
- * suppose it's uptodated and keep using it until the owning rpc is done.
+/**
+ * To refresh the context of \req, if it's not up-to-date.
+ * \param timeout
+ * - < 0: don't wait
+ * - = 0: wait until success or fatal error occur
+ * - > 0: timeout value (in seconds)
*
- * @timeout:
- * < 0 - don't wait
- * = 0 - wait until success or fatal error occur
- * > 0 - timeout value
+ * The status of the context could be subject to be changed by other threads
+ * at any time. We allow this race, but once we return with 0, the caller will
+ * suppose it's uptodated and keep using it until the owning rpc is done.
*
- * return 0 only if the context is uptodated.
+ * \retval 0 only if the context is uptodated.
+ * \retval -ev error number.
*/
int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- struct ptlrpc_sec *sec;
- struct l_wait_info lwi;
- int rc;
- ENTRY;
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ struct ptlrpc_sec *sec;
+ struct l_wait_info lwi;
+ int rc;
+
+ ENTRY;
- LASSERT(ctx);
+ LASSERT(ctx);
- if (req->rq_ctx_init || req->rq_ctx_fini)
- RETURN(0);
+ if (req->rq_ctx_init || req->rq_ctx_fini)
+ RETURN(0);
- /*
- * during the process a request's context might change type even
- * (e.g. from gss ctx to plain ctx), so each loop we need to re-check
- * everything
- */
+ /*
+ * during the process a request's context might change type even
+ * (e.g. from gss ctx to null ctx), so each loop we need to re-check
+ * everything
+ */
again:
- rc = import_sec_validate_get(req->rq_import, &sec);
- if (rc)
- RETURN(rc);
-
- if (sec->ps_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
- CDEBUG(D_SEC, "req %p: flavor has changed %x -> %x\n",
- req, req->rq_flvr.sf_rpc, sec->ps_flvr.sf_rpc);
- req_off_ctx_list(req, ctx);
- sptlrpc_req_replace_dead_ctx(req);
- ctx = req->rq_cli_ctx;
- }
- sptlrpc_sec_put(sec);
-
- if (cli_ctx_is_eternal(ctx))
- RETURN(0);
-
- if (unlikely(cfs_test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags))) {
- LASSERT(ctx->cc_ops->refresh);
- ctx->cc_ops->refresh(ctx);
- }
- LASSERT(cfs_test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags) == 0);
-
- LASSERT(ctx->cc_ops->validate);
- if (ctx->cc_ops->validate(ctx) == 0) {
- req_off_ctx_list(req, ctx);
- RETURN(0);
- }
-
- if (unlikely(cfs_test_bit(PTLRPC_CTX_ERROR_BIT, &ctx->cc_flags))) {
- req->rq_err = 1;
- req_off_ctx_list(req, ctx);
- RETURN(-EPERM);
- }
-
- /* This is subtle. For resent message we have to keep original
- * context to survive following situation:
- * 1. the request sent to server
- * 2. recovery was kick start
- * 3. recovery finished, the request marked as resent
- * 4. resend the request
- * 5. old reply from server received (because xid is the same)
- * 6. verify reply (has to be success)
- * 7. new reply from server received, lnet drop it
- *
- * Note we can't simply change xid for resent request because
- * server reply on it for reply reconstruction.
- *
- * Commonly the original context should be uptodate because we
- * have a expiry nice time; And server will keep their half part
- * context because we at least hold a ref of old context which
- * prevent the context destroy RPC be sent. So server still can
- * accept the request and finish RPC. Two cases:
- * 1. If server side context has been trimmed, a NO_CONTEXT will
- * be returned, gss_cli_ctx_verify/unseal will switch to new
- * context by force.
- * 2. Current context never be refreshed, then we are fine: we
- * never really send request with old context before.
- */
- if (cfs_test_bit(PTLRPC_CTX_UPTODATE_BIT, &ctx->cc_flags) &&
- unlikely(req->rq_reqmsg) &&
- lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
- req_off_ctx_list(req, ctx);
- RETURN(0);
- }
-
- if (unlikely(cfs_test_bit(PTLRPC_CTX_DEAD_BIT, &ctx->cc_flags))) {
- req_off_ctx_list(req, ctx);
- /*
- * don't switch ctx if import was deactivated
- */
- if (req->rq_import->imp_deactive) {
- req->rq_err = 1;
- RETURN(-EINTR);
- }
-
- rc = sptlrpc_req_replace_dead_ctx(req);
- if (rc) {
- LASSERT(ctx == req->rq_cli_ctx);
- CERROR("req %p: failed to replace dead ctx %p: %d\n",
- req, ctx, rc);
- req->rq_err = 1;
- RETURN(rc);
- }
-
- ctx = req->rq_cli_ctx;
- goto again;
- }
-
- /* Now we're sure this context is during upcall, add myself into
- * waiting list
- */
- cfs_spin_lock(&ctx->cc_lock);
- if (cfs_list_empty(&req->rq_ctx_chain))
- cfs_list_add(&req->rq_ctx_chain, &ctx->cc_req_list);
- cfs_spin_unlock(&ctx->cc_lock);
-
- if (timeout < 0)
- RETURN(-EWOULDBLOCK);
-
- /* Clear any flags that may be present from previous sends */
- LASSERT(req->rq_receiving_reply == 0);
- cfs_spin_lock(&req->rq_lock);
- req->rq_err = 0;
- req->rq_timedout = 0;
- req->rq_resend = 0;
- req->rq_restart = 0;
- cfs_spin_unlock(&req->rq_lock);
-
- lwi = LWI_TIMEOUT_INTR(timeout * CFS_HZ, ctx_refresh_timeout,
- ctx_refresh_interrupt, req);
- rc = l_wait_event(req->rq_reply_waitq, ctx_check_refresh(ctx), &lwi);
-
- /* following cases we could be here:
- * - successfully refreshed;
- * - interruptted;
- * - timedout, and we don't want recover from the failure;
- * - timedout, and waked up upon recovery finished;
- * - someone else mark this ctx dead by force;
- * - someone invalidate the req and call ptlrpc_client_wake_req(),
- * e.g. ptlrpc_abort_inflight();
- */
- if (!cli_ctx_is_refreshed(ctx)) {
- /* timed out or interruptted */
- req_off_ctx_list(req, ctx);
-
- LASSERT(rc != 0);
- RETURN(rc);
- }
-
- goto again;
+ rc = import_sec_validate_get(req->rq_import, &sec);
+ if (rc)
+ RETURN(rc);
+
+ if (sec->ps_flvr.sf_rpc != req->rq_flvr.sf_rpc) {
+ CDEBUG(D_SEC, "req %p: flavor has changed %x -> %x\n",
+ req, req->rq_flvr.sf_rpc, sec->ps_flvr.sf_rpc);
+ req_off_ctx_list(req, ctx);
+ sptlrpc_req_replace_dead_ctx(req);
+ ctx = req->rq_cli_ctx;
+ }
+ sptlrpc_sec_put(sec);
+
+ if (cli_ctx_is_eternal(ctx))
+ RETURN(0);
+
+ if (unlikely(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags))) {
+ LASSERT(ctx->cc_ops->refresh);
+ ctx->cc_ops->refresh(ctx);
+ }
+ LASSERT(test_bit(PTLRPC_CTX_NEW_BIT, &ctx->cc_flags) == 0);
+
+ LASSERT(ctx->cc_ops->validate);
+ if (ctx->cc_ops->validate(ctx) == 0) {
+ req_off_ctx_list(req, ctx);
+ RETURN(0);
+ }
+
+ if (unlikely(test_bit(PTLRPC_CTX_ERROR_BIT, &ctx->cc_flags))) {
+ spin_lock(&req->rq_lock);
+ req->rq_err = 1;
+ spin_unlock(&req->rq_lock);
+ req_off_ctx_list(req, ctx);
+ RETURN(-EPERM);
+ }
+
+ /*
+ * There's a subtle issue for resending RPCs, suppose following
+ * situation:
+ * 1. the request was sent to server.
+ * 2. recovery was kicked start, after finished the request was
+ * marked as resent.
+ * 3. resend the request.
+ * 4. old reply from server received, we accept and verify the reply.
+ * this has to be success, otherwise the error will be aware
+ * by application.
+ * 5. new reply from server received, dropped by LNet.
+ *
+ * Note the xid of old & new request is the same. We can't simply
+ * change xid for the resent request because the server replies on
+ * it for reply reconstruction.
+ *
+ * Commonly the original context should be uptodate because we
+ * have an expiry nice time; server will keep its context because
+ * we at least hold a ref of old context which prevent context
+ * from destroying RPC being sent. So server still can accept the
+ * request and finish the RPC. But if that's not the case:
+ * 1. If server side context has been trimmed, a NO_CONTEXT will
+ * be returned, gss_cli_ctx_verify/unseal will switch to new
+ * context by force.
+ * 2. Current context never be refreshed, then we are fine: we
+ * never really send request with old context before.
+ */
+ if (test_bit(PTLRPC_CTX_UPTODATE_BIT, &ctx->cc_flags) &&
+ unlikely(req->rq_reqmsg) &&
+ lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) {
+ req_off_ctx_list(req, ctx);
+ RETURN(0);
+ }
+
+ if (unlikely(test_bit(PTLRPC_CTX_DEAD_BIT, &ctx->cc_flags))) {
+ req_off_ctx_list(req, ctx);
+ /*
+ * don't switch ctx if import was deactivated
+ */
+ if (req->rq_import->imp_deactive) {
+ spin_lock(&req->rq_lock);
+ req->rq_err = 1;
+ spin_unlock(&req->rq_lock);
+ RETURN(-EINTR);
+ }
+
+ rc = sptlrpc_req_replace_dead_ctx(req);
+ if (rc) {
+ LASSERT(ctx == req->rq_cli_ctx);
+ CERROR("req %p: failed to replace dead ctx %p: %d\n",
+ req, ctx, rc);
+ spin_lock(&req->rq_lock);
+ req->rq_err = 1;
+ spin_unlock(&req->rq_lock);
+ RETURN(rc);
+ }
+
+ ctx = req->rq_cli_ctx;
+ goto again;
+ }
+
+ /*
+ * Now we're sure this context is during upcall, add myself into
+ * waiting list
+ */
+ spin_lock(&ctx->cc_lock);
+ if (list_empty(&req->rq_ctx_chain))
+ list_add(&req->rq_ctx_chain, &ctx->cc_req_list);
+ spin_unlock(&ctx->cc_lock);
+
+ if (timeout < 0)
+ RETURN(-EWOULDBLOCK);
+
+ /* Clear any flags that may be present from previous sends */
+ LASSERT(req->rq_receiving_reply == 0);
+ spin_lock(&req->rq_lock);
+ req->rq_err = 0;
+ req->rq_timedout = 0;
+ req->rq_resend = 0;
+ req->rq_restart = 0;
+ spin_unlock(&req->rq_lock);
+
+ lwi = LWI_TIMEOUT_INTR(msecs_to_jiffies(timeout * MSEC_PER_SEC),
+ ctx_refresh_timeout,
+ ctx_refresh_interrupt, req);
+ rc = l_wait_event(req->rq_reply_waitq, ctx_check_refresh(ctx), &lwi);
+
+ /*
+ * following cases could lead us here:
+ * - successfully refreshed;
+ * - interrupted;
+ * - timedout, and we don't want recover from the failure;
+ * - timedout, and waked up upon recovery finished;
+ * - someone else mark this ctx dead by force;
+ * - someone invalidate the req and call ptlrpc_client_wake_req(),
+ * e.g. ptlrpc_abort_inflight();
+ */
+ if (!cli_ctx_is_refreshed(ctx)) {
+ /* timed out or interruptted */
+ req_off_ctx_list(req, ctx);
+
+ LASSERT(rc != 0);
+ RETURN(rc);
+ }
+
+ goto again;
}
-/*
- * Note this could be called in two situations:
+/**
+ * Initialize flavor settings for \a req, according to \a opcode.
+ *
+ * \note this could be called in two situations:
* - new request from ptlrpc_pre_req(), with proper @opcode
* - old request which changed ctx in the middle, with @opcode == 0
*/
void sptlrpc_req_set_flavor(struct ptlrpc_request *req, int opcode)
{
- struct ptlrpc_sec *sec;
-
- LASSERT(req->rq_import);
- LASSERT(req->rq_cli_ctx);
- LASSERT(req->rq_cli_ctx->cc_sec);
- LASSERT(req->rq_bulk_read == 0 || req->rq_bulk_write == 0);
-
- /* special security flags accoding to opcode */
- switch (opcode) {
- case OST_READ:
- case MDS_READPAGE:
- req->rq_bulk_read = 1;
- break;
- case OST_WRITE:
- case MDS_WRITEPAGE:
- req->rq_bulk_write = 1;
- break;
- case SEC_CTX_INIT:
- req->rq_ctx_init = 1;
- break;
- case SEC_CTX_FINI:
- req->rq_ctx_fini = 1;
- break;
- case 0:
- /* init/fini rpc won't be resend, so can't be here */
- LASSERT(req->rq_ctx_init == 0);
- LASSERT(req->rq_ctx_fini == 0);
-
- /* cleanup flags, which should be recalculated */
- req->rq_pack_udesc = 0;
- req->rq_pack_bulk = 0;
- break;
- }
-
- sec = req->rq_cli_ctx->cc_sec;
-
- cfs_spin_lock(&sec->ps_lock);
- req->rq_flvr = sec->ps_flvr;
- cfs_spin_unlock(&sec->ps_lock);
-
- /* force SVC_NULL for context initiation rpc, SVC_INTG for context
- * destruction rpc */
- if (unlikely(req->rq_ctx_init))
- flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_NULL);
- else if (unlikely(req->rq_ctx_fini))
- flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_INTG);
-
- /* user descriptor flag, null security can't do it anyway */
- if ((sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_UDESC) &&
- (req->rq_flvr.sf_rpc != SPTLRPC_FLVR_NULL))
- req->rq_pack_udesc = 1;
-
- /* bulk security flag */
- if ((req->rq_bulk_read || req->rq_bulk_write) &&
- sptlrpc_flavor_has_bulk(&req->rq_flvr))
- req->rq_pack_bulk = 1;
+ struct ptlrpc_sec *sec;
+
+ LASSERT(req->rq_import);
+ LASSERT(req->rq_cli_ctx);
+ LASSERT(req->rq_cli_ctx->cc_sec);
+ LASSERT(req->rq_bulk_read == 0 || req->rq_bulk_write == 0);
+
+ /* special security flags according to opcode */
+ switch (opcode) {
+ case OST_READ:
+ case MDS_READPAGE:
+ case MGS_CONFIG_READ:
+ case OBD_IDX_READ:
+ req->rq_bulk_read = 1;
+ break;
+ case OST_WRITE:
+ case MDS_WRITEPAGE:
+ req->rq_bulk_write = 1;
+ break;
+ case SEC_CTX_INIT:
+ req->rq_ctx_init = 1;
+ break;
+ case SEC_CTX_FINI:
+ req->rq_ctx_fini = 1;
+ break;
+ case 0:
+ /* init/fini rpc won't be resend, so can't be here */
+ LASSERT(req->rq_ctx_init == 0);
+ LASSERT(req->rq_ctx_fini == 0);
+
+ /* cleanup flags, which should be recalculated */
+ req->rq_pack_udesc = 0;
+ req->rq_pack_bulk = 0;
+ break;
+ }
+
+ sec = req->rq_cli_ctx->cc_sec;
+
+ spin_lock(&sec->ps_lock);
+ req->rq_flvr = sec->ps_flvr;
+ spin_unlock(&sec->ps_lock);
+
+ /*
+ * force SVC_NULL for context initiation rpc, SVC_INTG for context
+ * destruction rpc
+ */
+ if (unlikely(req->rq_ctx_init))
+ flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_NULL);
+ else if (unlikely(req->rq_ctx_fini))
+ flvr_set_svc(&req->rq_flvr.sf_rpc, SPTLRPC_SVC_INTG);
+
+ /* user descriptor flag, null security can't do it anyway */
+ if ((sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_UDESC) &&
+ (req->rq_flvr.sf_rpc != SPTLRPC_FLVR_NULL))
+ req->rq_pack_udesc = 1;
+
+ /* bulk security flag */
+ if ((req->rq_bulk_read || req->rq_bulk_write) &&
+ sptlrpc_flavor_has_bulk(&req->rq_flvr))
+ req->rq_pack_bulk = 1;
}
void sptlrpc_request_out_callback(struct ptlrpc_request *req)
{
- if (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc) != SPTLRPC_SVC_PRIV)
- return;
+ if (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc) != SPTLRPC_SVC_PRIV)
+ return;
- LASSERT(req->rq_clrbuf);
- if (req->rq_pool || !req->rq_reqbuf)
- return;
+ LASSERT(req->rq_clrbuf);
+ if (req->rq_pool || !req->rq_reqbuf)
+ return;
- OBD_FREE(req->rq_reqbuf, req->rq_reqbuf_len);
- req->rq_reqbuf = NULL;
- req->rq_reqbuf_len = 0;
+ OBD_FREE(req->rq_reqbuf, req->rq_reqbuf_len);
+ req->rq_reqbuf = NULL;
+ req->rq_reqbuf_len = 0;
}
-/*
- * check whether current user have valid context for an import or not.
- * might repeatedly try in case of non-fatal errors.
- * return 0 on success, < 0 on failure
+/**
+ * Given an import \a imp, check whether current user has a valid context
+ * or not. We may create a new context and try to refresh it, and try
+ * repeatedly try in case of non-fatal errors. Return 0 means success.
*/
int sptlrpc_import_check_ctx(struct obd_import *imp)
{
- struct ptlrpc_sec *sec;
- struct ptlrpc_cli_ctx *ctx;
- struct ptlrpc_request *req = NULL;
- int rc;
- ENTRY;
+ struct ptlrpc_sec *sec;
+ struct ptlrpc_cli_ctx *ctx;
+ struct ptlrpc_request *req = NULL;
+ int rc;
+
+ ENTRY;
- cfs_might_sleep();
+ might_sleep();
- sec = sptlrpc_import_sec_ref(imp);
- ctx = get_my_ctx(sec);
- sptlrpc_sec_put(sec);
+ sec = sptlrpc_import_sec_ref(imp);
+ ctx = get_my_ctx(sec);
+ sptlrpc_sec_put(sec);
- if (!ctx)
- RETURN(-ENOMEM);
+ if (!ctx)
+ RETURN(-ENOMEM);
- if (cli_ctx_is_eternal(ctx) ||
- ctx->cc_ops->validate(ctx) == 0) {
- sptlrpc_cli_ctx_put(ctx, 1);
- RETURN(0);
- }
+ if (cli_ctx_is_eternal(ctx) ||
+ ctx->cc_ops->validate(ctx) == 0) {
+ sptlrpc_cli_ctx_put(ctx, 1);
+ RETURN(0);
+ }
- if (cli_ctx_is_error(ctx)) {
- sptlrpc_cli_ctx_put(ctx, 1);
- RETURN(-EACCES);
- }
+ if (cli_ctx_is_error(ctx)) {
+ sptlrpc_cli_ctx_put(ctx, 1);
+ RETURN(-EACCES);
+ }
- OBD_ALLOC_PTR(req);
- if (!req)
- RETURN(-ENOMEM);
+ req = ptlrpc_request_cache_alloc(GFP_NOFS);
+ if (!req)
+ RETURN(-ENOMEM);
- cfs_spin_lock_init(&req->rq_lock);
- cfs_atomic_set(&req->rq_refcount, 10000);
- CFS_INIT_LIST_HEAD(&req->rq_ctx_chain);
- cfs_waitq_init(&req->rq_reply_waitq);
- req->rq_import = imp;
- req->rq_flvr = sec->ps_flvr;
- req->rq_cli_ctx = ctx;
+ ptlrpc_cli_req_init(req);
+ atomic_set(&req->rq_refcount, 10000);
- rc = sptlrpc_req_refresh_ctx(req, 0);
- LASSERT(cfs_list_empty(&req->rq_ctx_chain));
- sptlrpc_cli_ctx_put(req->rq_cli_ctx, 1);
- OBD_FREE_PTR(req);
+ req->rq_import = imp;
+ req->rq_flvr = sec->ps_flvr;
+ req->rq_cli_ctx = ctx;
- RETURN(rc);
+ rc = sptlrpc_req_refresh_ctx(req, 0);
+ LASSERT(list_empty(&req->rq_ctx_chain));
+ sptlrpc_cli_ctx_put(req->rq_cli_ctx, 1);
+ ptlrpc_request_cache_free(req);
+
+ RETURN(rc);
}
+/**
+ * Used by ptlrpc client, to perform the pre-defined security transformation
+ * upon the request message of \a req. After this function called,
+ * req->rq_reqmsg is still accessible as clear text.
+ */
int sptlrpc_cli_wrap_request(struct ptlrpc_request *req)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- int rc = 0;
- ENTRY;
-
- LASSERT(ctx);
- LASSERT(ctx->cc_sec);
- LASSERT(req->rq_reqbuf || req->rq_clrbuf);
-
- /* we wrap bulk request here because now we can be sure
- * the context is uptodate.
- */
- if (req->rq_bulk) {
- rc = sptlrpc_cli_wrap_bulk(req, req->rq_bulk);
- if (rc)
- RETURN(rc);
- }
-
- switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) {
- case SPTLRPC_SVC_NULL:
- case SPTLRPC_SVC_AUTH:
- case SPTLRPC_SVC_INTG:
- LASSERT(ctx->cc_ops->sign);
- rc = ctx->cc_ops->sign(ctx, req);
- break;
- case SPTLRPC_SVC_PRIV:
- LASSERT(ctx->cc_ops->seal);
- rc = ctx->cc_ops->seal(ctx, req);
- break;
- default:
- LBUG();
- }
-
- if (rc == 0) {
- LASSERT(req->rq_reqdata_len);
- LASSERT(req->rq_reqdata_len % 8 == 0);
- LASSERT(req->rq_reqdata_len <= req->rq_reqbuf_len);
- }
-
- RETURN(rc);
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(ctx);
+ LASSERT(ctx->cc_sec);
+ LASSERT(req->rq_reqbuf || req->rq_clrbuf);
+
+ /*
+ * we wrap bulk request here because now we can be sure
+ * the context is uptodate.
+ */
+ if (req->rq_bulk) {
+ rc = sptlrpc_cli_wrap_bulk(req, req->rq_bulk);
+ if (rc)
+ RETURN(rc);
+ }
+
+ switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) {
+ case SPTLRPC_SVC_NULL:
+ case SPTLRPC_SVC_AUTH:
+ case SPTLRPC_SVC_INTG:
+ LASSERT(ctx->cc_ops->sign);
+ rc = ctx->cc_ops->sign(ctx, req);
+ break;
+ case SPTLRPC_SVC_PRIV:
+ LASSERT(ctx->cc_ops->seal);
+ rc = ctx->cc_ops->seal(ctx, req);
+ break;
+ default:
+ LBUG();
+ }
+
+ if (rc == 0) {
+ LASSERT(req->rq_reqdata_len);
+ LASSERT(req->rq_reqdata_len % 8 == 0);
+ LASSERT(req->rq_reqdata_len <= req->rq_reqbuf_len);
+ }
+
+ RETURN(rc);
}
static int do_cli_unwrap_reply(struct ptlrpc_request *req)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- int rc;
- ENTRY;
-
- LASSERT(ctx);
- LASSERT(ctx->cc_sec);
- LASSERT(req->rq_repbuf);
- LASSERT(req->rq_repdata);
- LASSERT(req->rq_repmsg == NULL);
-
- req->rq_rep_swab_mask = 0;
-
- rc = __lustre_unpack_msg(req->rq_repdata, req->rq_repdata_len);
- switch (rc) {
- case 1:
- lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
- case 0:
- break;
- default:
- CERROR("failed unpack reply: x"LPU64"\n", req->rq_xid);
- RETURN(-EPROTO);
- }
-
- if (req->rq_repdata_len < sizeof(struct lustre_msg)) {
- CERROR("replied data length %d too small\n",
- req->rq_repdata_len);
- RETURN(-EPROTO);
- }
-
- if (SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr) !=
- SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc)) {
- CERROR("reply policy %u doesn't match request policy %u\n",
- SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr),
- SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc));
- RETURN(-EPROTO);
- }
-
- switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) {
- case SPTLRPC_SVC_NULL:
- case SPTLRPC_SVC_AUTH:
- case SPTLRPC_SVC_INTG:
- LASSERT(ctx->cc_ops->verify);
- rc = ctx->cc_ops->verify(ctx, req);
- break;
- case SPTLRPC_SVC_PRIV:
- LASSERT(ctx->cc_ops->unseal);
- rc = ctx->cc_ops->unseal(ctx, req);
- break;
- default:
- LBUG();
- }
- LASSERT(rc || req->rq_repmsg || req->rq_resend);
-
- if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL &&
- !req->rq_ctx_init)
- req->rq_rep_swab_mask = 0;
- RETURN(rc);
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(ctx);
+ LASSERT(ctx->cc_sec);
+ LASSERT(req->rq_repbuf);
+ LASSERT(req->rq_repdata);
+ LASSERT(req->rq_repmsg == NULL);
+
+ req->rq_rep_swab_mask = 0;
+
+ rc = __lustre_unpack_msg(req->rq_repdata, req->rq_repdata_len);
+ switch (rc) {
+ case 1:
+ lustre_set_rep_swabbed(req, MSG_PTLRPC_HEADER_OFF);
+ case 0:
+ break;
+ default:
+ CERROR("failed unpack reply: x%llu\n", req->rq_xid);
+ RETURN(-EPROTO);
+ }
+
+ if (req->rq_repdata_len < sizeof(struct lustre_msg)) {
+ CERROR("replied data length %d too small\n",
+ req->rq_repdata_len);
+ RETURN(-EPROTO);
+ }
+
+ if (SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr) !=
+ SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc)) {
+ CERROR("reply policy %u doesn't match request policy %u\n",
+ SPTLRPC_FLVR_POLICY(req->rq_repdata->lm_secflvr),
+ SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc));
+ RETURN(-EPROTO);
+ }
+
+ switch (SPTLRPC_FLVR_SVC(req->rq_flvr.sf_rpc)) {
+ case SPTLRPC_SVC_NULL:
+ case SPTLRPC_SVC_AUTH:
+ case SPTLRPC_SVC_INTG:
+ LASSERT(ctx->cc_ops->verify);
+ rc = ctx->cc_ops->verify(ctx, req);
+ break;
+ case SPTLRPC_SVC_PRIV:
+ LASSERT(ctx->cc_ops->unseal);
+ rc = ctx->cc_ops->unseal(ctx, req);
+ break;
+ default:
+ LBUG();
+ }
+ LASSERT(rc || req->rq_repmsg || req->rq_resend);
+
+ if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL &&
+ !req->rq_ctx_init)
+ req->rq_rep_swab_mask = 0;
+ RETURN(rc);
}
-/*
- * upon this be called, the reply buffer should have been un-posted,
- * so nothing is going to change.
+/**
+ * Used by ptlrpc client, to perform security transformation upon the reply
+ * message of \a req. After return successfully, req->rq_repmsg points to
+ * the reply message in clear text.
+ *
+ * \pre the reply buffer should have been un-posted from LNet, so nothing is
+ * going to change.
*/
int sptlrpc_cli_unwrap_reply(struct ptlrpc_request *req)
{
- LASSERT(req->rq_repbuf);
- LASSERT(req->rq_repdata == NULL);
- LASSERT(req->rq_repmsg == NULL);
- LASSERT(req->rq_reply_off + req->rq_nob_received <= req->rq_repbuf_len);
+ LASSERT(req->rq_repbuf);
+ LASSERT(req->rq_repdata == NULL);
+ LASSERT(req->rq_repmsg == NULL);
+ LASSERT(req->rq_reply_off + req->rq_nob_received <= req->rq_repbuf_len);
- if (req->rq_reply_off == 0 &&
- (lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)) {
- CERROR("real reply with offset 0\n");
- return -EPROTO;
- }
+ if (req->rq_reply_off == 0 &&
+ (lustre_msghdr_get_flags(req->rq_reqmsg) & MSGHDR_AT_SUPPORT)) {
+ CERROR("real reply with offset 0\n");
+ return -EPROTO;
+ }
- if (req->rq_reply_off % 8 != 0) {
- CERROR("reply at odd offset %u\n", req->rq_reply_off);
- return -EPROTO;
- }
+ if (req->rq_reply_off % 8 != 0) {
+ CERROR("reply at odd offset %u\n", req->rq_reply_off);
+ return -EPROTO;
+ }
- req->rq_repdata = (struct lustre_msg *)
- (req->rq_repbuf + req->rq_reply_off);
- req->rq_repdata_len = req->rq_nob_received;
+ req->rq_repdata = (struct lustre_msg *)
+ (req->rq_repbuf + req->rq_reply_off);
+ req->rq_repdata_len = req->rq_nob_received;
- return do_cli_unwrap_reply(req);
+ return do_cli_unwrap_reply(req);
}
/**
- * Upon called, the receive buffer might be still posted, so the reply data
- * might be changed at any time, no matter we're holding rq_lock or not. we
- * expect the rq_reply_off be 0, rq_nob_received is the early reply size.
+ * Used by ptlrpc client, to perform security transformation upon the early
+ * reply message of \a req. We expect the rq_reply_off is 0, and
+ * rq_nob_received is the early reply size.
+ *
+ * Because the receive buffer might be still posted, the reply data might be
+ * changed at any time, no matter we're holding rq_lock or not. For this reason
+ * we allocate a separate ptlrpc_request and reply buffer for early reply
+ * processing.
*
- * we allocate separate ptlrpc_request and reply buffer for early reply
- * processing, return 0 and \a req_ret is a duplicated ptlrpc_request. caller
- * must call sptlrpc_cli_finish_early_reply() on the returned request to
- * release it. if anything goes wrong \a req_ret will not be set.
+ * \retval 0 success, \a req_ret is filled with a duplicated ptlrpc_request.
+ * Later the caller must call sptlrpc_cli_finish_early_reply() on the returned
+ * \a *req_ret to release it.
+ * \retval -ev error number, and \a req_ret will not be set.
*/
int sptlrpc_cli_unwrap_early_reply(struct ptlrpc_request *req,
- struct ptlrpc_request **req_ret)
-{
- struct ptlrpc_request *early_req;
- char *early_buf;
- int early_bufsz, early_size;
- int rc;
- ENTRY;
-
- OBD_ALLOC_PTR(early_req);
- if (early_req == NULL)
- RETURN(-ENOMEM);
-
- early_size = req->rq_nob_received;
- early_bufsz = size_roundup_power2(early_size);
- OBD_ALLOC(early_buf, early_bufsz);
- if (early_buf == NULL)
- GOTO(err_req, rc = -ENOMEM);
-
- /* sanity checkings and copy data out, do it inside spinlock */
- cfs_spin_lock(&req->rq_lock);
-
- if (req->rq_replied) {
- cfs_spin_unlock(&req->rq_lock);
- GOTO(err_buf, rc = -EALREADY);
- }
-
- LASSERT(req->rq_repbuf);
- LASSERT(req->rq_repdata == NULL);
- LASSERT(req->rq_repmsg == NULL);
-
- if (req->rq_reply_off != 0) {
- CERROR("early reply with offset %u\n", req->rq_reply_off);
- cfs_spin_unlock(&req->rq_lock);
- GOTO(err_buf, rc = -EPROTO);
- }
-
- if (req->rq_nob_received != early_size) {
- /* even another early arrived the size should be the same */
- CERROR("data size has changed from %u to %u\n",
- early_size, req->rq_nob_received);
- cfs_spin_unlock(&req->rq_lock);
- GOTO(err_buf, rc = -EINVAL);
- }
-
- if (req->rq_nob_received < sizeof(struct lustre_msg)) {
- CERROR("early reply length %d too small\n",
- req->rq_nob_received);
- cfs_spin_unlock(&req->rq_lock);
- GOTO(err_buf, rc = -EALREADY);
- }
-
- memcpy(early_buf, req->rq_repbuf, early_size);
- cfs_spin_unlock(&req->rq_lock);
-
- cfs_spin_lock_init(&early_req->rq_lock);
- early_req->rq_cli_ctx = sptlrpc_cli_ctx_get(req->rq_cli_ctx);
- early_req->rq_flvr = req->rq_flvr;
- early_req->rq_repbuf = early_buf;
- early_req->rq_repbuf_len = early_bufsz;
- early_req->rq_repdata = (struct lustre_msg *) early_buf;
- early_req->rq_repdata_len = early_size;
- early_req->rq_early = 1;
-
- rc = do_cli_unwrap_reply(early_req);
- if (rc) {
- DEBUG_REQ(D_ADAPTTO, early_req,
- "error %d unwrap early reply", rc);
- GOTO(err_ctx, rc);
- }
-
- LASSERT(early_req->rq_repmsg);
- *req_ret = early_req;
- RETURN(0);
+ struct ptlrpc_request **req_ret)
+{
+ struct ptlrpc_request *early_req;
+ char *early_buf;
+ int early_bufsz, early_size;
+ int rc;
+
+ ENTRY;
+
+ early_req = ptlrpc_request_cache_alloc(GFP_NOFS);
+ if (early_req == NULL)
+ RETURN(-ENOMEM);
+
+ ptlrpc_cli_req_init(early_req);
+
+ early_size = req->rq_nob_received;
+ early_bufsz = size_roundup_power2(early_size);
+ OBD_ALLOC_LARGE(early_buf, early_bufsz);
+ if (early_buf == NULL)
+ GOTO(err_req, rc = -ENOMEM);
+
+ /* sanity checkings and copy data out, do it inside spinlock */
+ spin_lock(&req->rq_lock);
+
+ if (req->rq_replied) {
+ spin_unlock(&req->rq_lock);
+ GOTO(err_buf, rc = -EALREADY);
+ }
+
+ LASSERT(req->rq_repbuf);
+ LASSERT(req->rq_repdata == NULL);
+ LASSERT(req->rq_repmsg == NULL);
+
+ if (req->rq_reply_off != 0) {
+ CERROR("early reply with offset %u\n", req->rq_reply_off);
+ spin_unlock(&req->rq_lock);
+ GOTO(err_buf, rc = -EPROTO);
+ }
+
+ if (req->rq_nob_received != early_size) {
+ /* even another early arrived the size should be the same */
+ CERROR("data size has changed from %u to %u\n",
+ early_size, req->rq_nob_received);
+ spin_unlock(&req->rq_lock);
+ GOTO(err_buf, rc = -EINVAL);
+ }
+
+ if (req->rq_nob_received < sizeof(struct lustre_msg)) {
+ CERROR("early reply length %d too small\n",
+ req->rq_nob_received);
+ spin_unlock(&req->rq_lock);
+ GOTO(err_buf, rc = -EALREADY);
+ }
+
+ memcpy(early_buf, req->rq_repbuf, early_size);
+ spin_unlock(&req->rq_lock);
+
+ early_req->rq_cli_ctx = sptlrpc_cli_ctx_get(req->rq_cli_ctx);
+ early_req->rq_flvr = req->rq_flvr;
+ early_req->rq_repbuf = early_buf;
+ early_req->rq_repbuf_len = early_bufsz;
+ early_req->rq_repdata = (struct lustre_msg *) early_buf;
+ early_req->rq_repdata_len = early_size;
+ early_req->rq_early = 1;
+ early_req->rq_reqmsg = req->rq_reqmsg;
+
+ rc = do_cli_unwrap_reply(early_req);
+ if (rc) {
+ DEBUG_REQ(D_ADAPTTO, early_req,
+ "error %d unwrap early reply", rc);
+ GOTO(err_ctx, rc);
+ }
+
+ LASSERT(early_req->rq_repmsg);
+ *req_ret = early_req;
+ RETURN(0);
err_ctx:
- sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1);
+ sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1);
err_buf:
- OBD_FREE(early_buf, early_bufsz);
+ OBD_FREE_LARGE(early_buf, early_bufsz);
err_req:
- OBD_FREE_PTR(early_req);
- RETURN(rc);
+ ptlrpc_request_cache_free(early_req);
+ RETURN(rc);
}
+/**
+ * Used by ptlrpc client, to release a processed early reply \a early_req.
+ *
+ * \pre \a early_req was obtained from calling sptlrpc_cli_unwrap_early_reply().
+ */
void sptlrpc_cli_finish_early_reply(struct ptlrpc_request *early_req)
{
- LASSERT(early_req->rq_repbuf);
- LASSERT(early_req->rq_repdata);
- LASSERT(early_req->rq_repmsg);
+ LASSERT(early_req->rq_repbuf);
+ LASSERT(early_req->rq_repdata);
+ LASSERT(early_req->rq_repmsg);
- sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1);
- OBD_FREE(early_req->rq_repbuf, early_req->rq_repbuf_len);
- OBD_FREE_PTR(early_req);
+ sptlrpc_cli_ctx_put(early_req->rq_cli_ctx, 1);
+ OBD_FREE_LARGE(early_req->rq_repbuf, early_req->rq_repbuf_len);
+ ptlrpc_request_cache_free(early_req);
}
/**************************************************
/*
* "fixed" sec (e.g. null) use sec_id < 0
*/
-static cfs_atomic_t sptlrpc_sec_id = CFS_ATOMIC_INIT(1);
+static atomic_t sptlrpc_sec_id = ATOMIC_INIT(1);
int sptlrpc_get_next_secid(void)
{
- return cfs_atomic_inc_return(&sptlrpc_sec_id);
+ return atomic_inc_return(&sptlrpc_sec_id);
}
EXPORT_SYMBOL(sptlrpc_get_next_secid);
-/**************************************************
- * client side high-level security APIs *
- **************************************************/
+/*
+ * client side high-level security APIs
+ */
static int sec_cop_flush_ctx_cache(struct ptlrpc_sec *sec, uid_t uid,
- int grace, int force)
+ int grace, int force)
{
- struct ptlrpc_sec_policy *policy = sec->ps_policy;
+ struct ptlrpc_sec_policy *policy = sec->ps_policy;
- LASSERT(policy->sp_cops);
- LASSERT(policy->sp_cops->flush_ctx_cache);
+ LASSERT(policy->sp_cops);
+ LASSERT(policy->sp_cops->flush_ctx_cache);
- return policy->sp_cops->flush_ctx_cache(sec, uid, grace, force);
+ return policy->sp_cops->flush_ctx_cache(sec, uid, grace, force);
}
static void sec_cop_destroy_sec(struct ptlrpc_sec *sec)
{
- struct ptlrpc_sec_policy *policy = sec->ps_policy;
+ struct ptlrpc_sec_policy *policy = sec->ps_policy;
- LASSERT(cfs_atomic_read(&sec->ps_refcount) == 0);
- LASSERT(cfs_atomic_read(&sec->ps_nctx) == 0);
- LASSERT(policy->sp_cops->destroy_sec);
+ LASSERT_ATOMIC_ZERO(&sec->ps_refcount);
+ LASSERT_ATOMIC_ZERO(&sec->ps_nctx);
+ LASSERT(policy->sp_cops->destroy_sec);
- CDEBUG(D_SEC, "%s@%p: being destroied\n", sec->ps_policy->sp_name, sec);
+ CDEBUG(D_SEC, "%s@%p: being destroied\n", sec->ps_policy->sp_name, sec);
- policy->sp_cops->destroy_sec(sec);
- sptlrpc_policy_put(policy);
+ policy->sp_cops->destroy_sec(sec);
+ sptlrpc_policy_put(policy);
}
void sptlrpc_sec_destroy(struct ptlrpc_sec *sec)
{
- sec_cop_destroy_sec(sec);
+ sec_cop_destroy_sec(sec);
}
EXPORT_SYMBOL(sptlrpc_sec_destroy);
static void sptlrpc_sec_kill(struct ptlrpc_sec *sec)
{
- LASSERT(cfs_atomic_read(&sec->ps_refcount) > 0);
+ LASSERT_ATOMIC_POS(&sec->ps_refcount);
- if (sec->ps_policy->sp_cops->kill_sec) {
- sec->ps_policy->sp_cops->kill_sec(sec);
+ if (sec->ps_policy->sp_cops->kill_sec) {
+ sec->ps_policy->sp_cops->kill_sec(sec);
- sec_cop_flush_ctx_cache(sec, -1, 1, 1);
- }
+ sec_cop_flush_ctx_cache(sec, -1, 1, 1);
+ }
}
struct ptlrpc_sec *sptlrpc_sec_get(struct ptlrpc_sec *sec)
{
- if (sec) {
- LASSERT(cfs_atomic_read(&sec->ps_refcount) > 0);
- cfs_atomic_inc(&sec->ps_refcount);
- }
+ if (sec)
+ atomic_inc(&sec->ps_refcount);
- return sec;
+ return sec;
}
EXPORT_SYMBOL(sptlrpc_sec_get);
void sptlrpc_sec_put(struct ptlrpc_sec *sec)
{
- if (sec) {
- LASSERT(cfs_atomic_read(&sec->ps_refcount) > 0);
+ if (sec) {
+ LASSERT_ATOMIC_POS(&sec->ps_refcount);
- if (cfs_atomic_dec_and_test(&sec->ps_refcount)) {
- LASSERT(cfs_atomic_read(&sec->ps_nctx) == 0);
-
- sptlrpc_gc_del_sec(sec);
- sec_cop_destroy_sec(sec);
- }
- }
+ if (atomic_dec_and_test(&sec->ps_refcount)) {
+ sptlrpc_gc_del_sec(sec);
+ sec_cop_destroy_sec(sec);
+ }
+ }
}
EXPORT_SYMBOL(sptlrpc_sec_put);
*/
static
struct ptlrpc_sec * sptlrpc_sec_create(struct obd_import *imp,
- struct ptlrpc_svc_ctx *svc_ctx,
- struct sptlrpc_flavor *sf,
- enum lustre_sec_part sp)
+ struct ptlrpc_svc_ctx *svc_ctx,
+ struct sptlrpc_flavor *sf,
+ enum lustre_sec_part sp)
{
- struct ptlrpc_sec_policy *policy;
- struct ptlrpc_sec *sec;
- char str[32];
- ENTRY;
+ struct ptlrpc_sec_policy *policy;
+ struct ptlrpc_sec *sec;
+ char str[32];
+
+ ENTRY;
- if (svc_ctx) {
- LASSERT(imp->imp_dlm_fake == 1);
+ if (svc_ctx) {
+ LASSERT(imp->imp_dlm_fake == 1);
- CDEBUG(D_SEC, "%s %s: reverse sec using flavor %s\n",
- imp->imp_obd->obd_type->typ_name,
- imp->imp_obd->obd_name,
- sptlrpc_flavor2name(sf, str, sizeof(str)));
+ CDEBUG(D_SEC, "%s %s: reverse sec using flavor %s\n",
+ imp->imp_obd->obd_type->typ_name,
+ imp->imp_obd->obd_name,
+ sptlrpc_flavor2name(sf, str, sizeof(str)));
- policy = sptlrpc_policy_get(svc_ctx->sc_policy);
- sf->sf_flags |= PTLRPC_SEC_FL_REVERSE | PTLRPC_SEC_FL_ROOTONLY;
- } else {
- LASSERT(imp->imp_dlm_fake == 0);
+ policy = sptlrpc_policy_get(svc_ctx->sc_policy);
+ sf->sf_flags |= PTLRPC_SEC_FL_REVERSE | PTLRPC_SEC_FL_ROOTONLY;
+ } else {
+ LASSERT(imp->imp_dlm_fake == 0);
- CDEBUG(D_SEC, "%s %s: select security flavor %s\n",
- imp->imp_obd->obd_type->typ_name,
- imp->imp_obd->obd_name,
- sptlrpc_flavor2name(sf, str, sizeof(str)));
+ CDEBUG(D_SEC, "%s %s: select security flavor %s\n",
+ imp->imp_obd->obd_type->typ_name,
+ imp->imp_obd->obd_name,
+ sptlrpc_flavor2name(sf, str, sizeof(str)));
- policy = sptlrpc_wireflavor2policy(sf->sf_rpc);
- if (!policy) {
- CERROR("invalid flavor 0x%x\n", sf->sf_rpc);
- RETURN(NULL);
- }
- }
+ policy = sptlrpc_wireflavor2policy(sf->sf_rpc);
+ if (!policy) {
+ CERROR("invalid flavor 0x%x\n", sf->sf_rpc);
+ RETURN(NULL);
+ }
+ }
- sec = policy->sp_cops->create_sec(imp, svc_ctx, sf);
- if (sec) {
- cfs_atomic_inc(&sec->ps_refcount);
+ sec = policy->sp_cops->create_sec(imp, svc_ctx, sf);
+ if (sec) {
+ atomic_inc(&sec->ps_refcount);
- sec->ps_part = sp;
+ sec->ps_part = sp;
- if (sec->ps_gc_interval && policy->sp_cops->gc_ctx)
- sptlrpc_gc_add_sec(sec);
- } else {
- sptlrpc_policy_put(policy);
- }
+ if (sec->ps_gc_interval && policy->sp_cops->gc_ctx)
+ sptlrpc_gc_add_sec(sec);
+ } else {
+ sptlrpc_policy_put(policy);
+ }
- RETURN(sec);
+ RETURN(sec);
}
struct ptlrpc_sec *sptlrpc_import_sec_ref(struct obd_import *imp)
{
- struct ptlrpc_sec *sec;
+ struct ptlrpc_sec *sec;
- cfs_spin_lock(&imp->imp_lock);
- sec = sptlrpc_sec_get(imp->imp_sec);
- cfs_spin_unlock(&imp->imp_lock);
+ read_lock(&imp->imp_sec_lock);
+ sec = sptlrpc_sec_get(imp->imp_sec);
+ read_unlock(&imp->imp_sec_lock);
- return sec;
+ return sec;
}
EXPORT_SYMBOL(sptlrpc_import_sec_ref);
static void sptlrpc_import_sec_install(struct obd_import *imp,
- struct ptlrpc_sec *sec)
+ struct ptlrpc_sec *sec)
{
- struct ptlrpc_sec *old_sec;
+ struct ptlrpc_sec *old_sec;
- LASSERT(cfs_atomic_read(&sec->ps_refcount) > 0);
+ LASSERT_ATOMIC_POS(&sec->ps_refcount);
- cfs_spin_lock(&imp->imp_lock);
- old_sec = imp->imp_sec;
- imp->imp_sec = sec;
- cfs_spin_unlock(&imp->imp_lock);
+ write_lock(&imp->imp_sec_lock);
+ old_sec = imp->imp_sec;
+ imp->imp_sec = sec;
+ write_unlock(&imp->imp_sec_lock);
- if (old_sec) {
- sptlrpc_sec_kill(old_sec);
+ if (old_sec) {
+ sptlrpc_sec_kill(old_sec);
- /* balance the ref taken by this import */
- sptlrpc_sec_put(old_sec);
- }
+ /* balance the ref taken by this import */
+ sptlrpc_sec_put(old_sec);
+ }
}
static inline
int flavor_equal(struct sptlrpc_flavor *sf1, struct sptlrpc_flavor *sf2)
{
- return (memcmp(sf1, sf2, sizeof(*sf1)) == 0);
+ return (memcmp(sf1, sf2, sizeof(*sf1)) == 0);
}
static inline
void flavor_copy(struct sptlrpc_flavor *dst, struct sptlrpc_flavor *src)
{
- *dst = *src;
+ *dst = *src;
}
-static void sptlrpc_import_sec_adapt_inplace(struct obd_import *imp,
- struct ptlrpc_sec *sec,
- struct sptlrpc_flavor *sf)
-{
- char str1[32], str2[32];
-
- if (sec->ps_flvr.sf_flags != sf->sf_flags)
- CWARN("changing sec flags: %s -> %s\n",
- sptlrpc_secflags2str(sec->ps_flvr.sf_flags,
- str1, sizeof(str1)),
- sptlrpc_secflags2str(sf->sf_flags,
- str2, sizeof(str2)));
-
- cfs_spin_lock(&sec->ps_lock);
- flavor_copy(&sec->ps_flvr, sf);
- cfs_spin_unlock(&sec->ps_lock);
-}
-
-/*
- * for normal import, @svc_ctx should be NULL and @flvr is ignored;
- * for reverse import, @svc_ctx and @flvr is from incoming request.
+/**
+ * To get an appropriate ptlrpc_sec for the \a imp, according to the current
+ * configuration. Upon called, imp->imp_sec may or may not be NULL.
+ *
+ * - regular import: \a svc_ctx should be NULL and \a flvr is ignored;
+ * - reverse import: \a svc_ctx and \a flvr are obtained from incoming request.
*/
int sptlrpc_import_sec_adapt(struct obd_import *imp,
- struct ptlrpc_svc_ctx *svc_ctx,
- struct sptlrpc_flavor *flvr)
-{
- struct ptlrpc_connection *conn;
- struct sptlrpc_flavor sf;
- struct ptlrpc_sec *sec, *newsec;
- enum lustre_sec_part sp;
- char str[24];
- int rc = 0;
- ENTRY;
-
- cfs_might_sleep();
-
- if (imp == NULL)
- RETURN(0);
-
- conn = imp->imp_connection;
-
- if (svc_ctx == NULL) {
- struct client_obd *cliobd = &imp->imp_obd->u.cli;
- /*
- * normal import, determine flavor from rule set, except
- * for mgc the flavor is predetermined.
- */
- if (cliobd->cl_sp_me == LUSTRE_SP_MGC)
- sf = cliobd->cl_flvr_mgc;
- else
- sptlrpc_conf_choose_flavor(cliobd->cl_sp_me,
- cliobd->cl_sp_to,
- &cliobd->cl_target_uuid,
- conn->c_self, &sf);
-
- sp = imp->imp_obd->u.cli.cl_sp_me;
- } else {
- /* reverse import, determine flavor from incoming reqeust */
- sf = *flvr;
-
- if (sf.sf_rpc != SPTLRPC_FLVR_NULL)
- sf.sf_flags = PTLRPC_SEC_FL_REVERSE |
- PTLRPC_SEC_FL_ROOTONLY;
-
- sp = sptlrpc_target_sec_part(imp->imp_obd);
- }
-
- sec = sptlrpc_import_sec_ref(imp);
- if (sec) {
- char str2[24];
-
- if (flavor_equal(&sf, &sec->ps_flvr))
- GOTO(out, rc);
-
- CWARN("import %s->%s: changing flavor %s -> %s\n",
- imp->imp_obd->obd_name,
- obd_uuid2str(&conn->c_remote_uuid),
- sptlrpc_flavor2name(&sec->ps_flvr, str, sizeof(str)),
- sptlrpc_flavor2name(&sf, str2, sizeof(str2)));
-
- if (SPTLRPC_FLVR_POLICY(sf.sf_rpc) ==
- SPTLRPC_FLVR_POLICY(sec->ps_flvr.sf_rpc) &&
- SPTLRPC_FLVR_MECH(sf.sf_rpc) ==
- SPTLRPC_FLVR_MECH(sec->ps_flvr.sf_rpc)) {
- sptlrpc_import_sec_adapt_inplace(imp, sec, &sf);
- GOTO(out, rc);
- }
- } else {
- CWARN("import %s->%s netid %x: select flavor %s\n",
- imp->imp_obd->obd_name,
- obd_uuid2str(&conn->c_remote_uuid),
- LNET_NIDNET(conn->c_self),
- sptlrpc_flavor2name(&sf, str, sizeof(str)));
- }
-
- cfs_mutex_down(&imp->imp_sec_mutex);
-
- newsec = sptlrpc_sec_create(imp, svc_ctx, &sf, sp);
- if (newsec) {
- sptlrpc_import_sec_install(imp, newsec);
- } else {
- CERROR("import %s->%s: failed to create new sec\n",
- imp->imp_obd->obd_name,
- obd_uuid2str(&conn->c_remote_uuid));
- rc = -EPERM;
- }
-
- cfs_mutex_up(&imp->imp_sec_mutex);
+ struct ptlrpc_svc_ctx *svc_ctx,
+ struct sptlrpc_flavor *flvr)
+{
+ struct ptlrpc_connection *conn;
+ struct sptlrpc_flavor sf;
+ struct ptlrpc_sec *sec, *newsec;
+ enum lustre_sec_part sp;
+ char str[24];
+ int rc = 0;
+
+ ENTRY;
+
+ might_sleep();
+
+ if (imp == NULL)
+ RETURN(0);
+
+ conn = imp->imp_connection;
+
+ if (svc_ctx == NULL) {
+ struct client_obd *cliobd = &imp->imp_obd->u.cli;
+ /*
+ * normal import, determine flavor from rule set, except
+ * for mgc the flavor is predetermined.
+ */
+ if (cliobd->cl_sp_me == LUSTRE_SP_MGC)
+ sf = cliobd->cl_flvr_mgc;
+ else
+ sptlrpc_conf_choose_flavor(cliobd->cl_sp_me,
+ cliobd->cl_sp_to,
+ &cliobd->cl_target_uuid,
+ conn->c_self, &sf);
+
+ sp = imp->imp_obd->u.cli.cl_sp_me;
+ } else {
+ /* reverse import, determine flavor from incoming reqeust */
+ sf = *flvr;
+
+ if (sf.sf_rpc != SPTLRPC_FLVR_NULL)
+ sf.sf_flags = PTLRPC_SEC_FL_REVERSE |
+ PTLRPC_SEC_FL_ROOTONLY;
+
+ sp = sptlrpc_target_sec_part(imp->imp_obd);
+ }
+
+ sec = sptlrpc_import_sec_ref(imp);
+ if (sec) {
+ char str2[24];
+
+ if (flavor_equal(&sf, &sec->ps_flvr))
+ GOTO(out, rc);
+
+ CDEBUG(D_SEC, "import %s->%s: changing flavor %s -> %s\n",
+ imp->imp_obd->obd_name,
+ obd_uuid2str(&conn->c_remote_uuid),
+ sptlrpc_flavor2name(&sec->ps_flvr, str, sizeof(str)),
+ sptlrpc_flavor2name(&sf, str2, sizeof(str2)));
+ } else if (SPTLRPC_FLVR_BASE(sf.sf_rpc) !=
+ SPTLRPC_FLVR_BASE(SPTLRPC_FLVR_NULL)) {
+ CDEBUG(D_SEC, "import %s->%s netid %x: select flavor %s\n",
+ imp->imp_obd->obd_name,
+ obd_uuid2str(&conn->c_remote_uuid),
+ LNET_NIDNET(conn->c_self),
+ sptlrpc_flavor2name(&sf, str, sizeof(str)));
+ }
+
+ newsec = sptlrpc_sec_create(imp, svc_ctx, &sf, sp);
+ if (newsec) {
+ sptlrpc_import_sec_install(imp, newsec);
+ } else {
+ CERROR("import %s->%s: failed to create new sec\n",
+ imp->imp_obd->obd_name,
+ obd_uuid2str(&conn->c_remote_uuid));
+ rc = -EPERM;
+ }
+
out:
- sptlrpc_sec_put(sec);
- RETURN(rc);
+ sptlrpc_sec_put(sec);
+ RETURN(rc);
}
void sptlrpc_import_sec_put(struct obd_import *imp)
{
- if (imp->imp_sec) {
- sptlrpc_sec_kill(imp->imp_sec);
+ if (imp->imp_sec) {
+ sptlrpc_sec_kill(imp->imp_sec);
- sptlrpc_sec_put(imp->imp_sec);
- imp->imp_sec = NULL;
- }
+ sptlrpc_sec_put(imp->imp_sec);
+ imp->imp_sec = NULL;
+ }
}
static void import_flush_ctx_common(struct obd_import *imp,
- uid_t uid, int grace, int force)
+ uid_t uid, int grace, int force)
{
- struct ptlrpc_sec *sec;
+ struct ptlrpc_sec *sec;
- if (imp == NULL)
- return;
+ if (imp == NULL)
+ return;
- sec = sptlrpc_import_sec_ref(imp);
- if (sec == NULL)
- return;
+ sec = sptlrpc_import_sec_ref(imp);
+ if (sec == NULL)
+ return;
- sec_cop_flush_ctx_cache(sec, uid, grace, force);
- sptlrpc_sec_put(sec);
+ sec_cop_flush_ctx_cache(sec, uid, grace, force);
+ sptlrpc_sec_put(sec);
}
void sptlrpc_import_flush_root_ctx(struct obd_import *imp)
{
- /* it's important to use grace mode, see explain in
- * sptlrpc_req_refresh_ctx() */
- import_flush_ctx_common(imp, 0, 1, 1);
+ /*
+ * it's important to use grace mode, see explain in
+ * sptlrpc_req_refresh_ctx()
+ */
+ import_flush_ctx_common(imp, 0, 1, 1);
}
void sptlrpc_import_flush_my_ctx(struct obd_import *imp)
{
- import_flush_ctx_common(imp, cfs_current()->uid, 1, 1);
+ import_flush_ctx_common(imp, from_kuid(&init_user_ns, current_uid()),
+ 1, 1);
}
EXPORT_SYMBOL(sptlrpc_import_flush_my_ctx);
void sptlrpc_import_flush_all_ctx(struct obd_import *imp)
{
- import_flush_ctx_common(imp, -1, 1, 1);
+ import_flush_ctx_common(imp, -1, 1, 1);
}
EXPORT_SYMBOL(sptlrpc_import_flush_all_ctx);
-/*
- * when complete successfully, req->rq_reqmsg should point to the
- * right place.
+/**
+ * Used by ptlrpc client to allocate request buffer of \a req. Upon return
+ * successfully, req->rq_reqmsg points to a buffer with size \a msgsize.
*/
int sptlrpc_cli_alloc_reqbuf(struct ptlrpc_request *req, int msgsize)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- struct ptlrpc_sec_policy *policy;
- int rc;
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ struct ptlrpc_sec_policy *policy;
+ int rc;
- LASSERT(ctx);
- LASSERT(cfs_atomic_read(&ctx->cc_refcount));
- LASSERT(ctx->cc_sec);
- LASSERT(ctx->cc_sec->ps_policy);
- LASSERT(req->rq_reqmsg == NULL);
+ LASSERT(ctx);
+ LASSERT(ctx->cc_sec);
+ LASSERT(ctx->cc_sec->ps_policy);
+ LASSERT(req->rq_reqmsg == NULL);
+ LASSERT_ATOMIC_POS(&ctx->cc_refcount);
- policy = ctx->cc_sec->ps_policy;
- rc = policy->sp_cops->alloc_reqbuf(ctx->cc_sec, req, msgsize);
- if (!rc) {
- LASSERT(req->rq_reqmsg);
- LASSERT(req->rq_reqbuf || req->rq_clrbuf);
+ policy = ctx->cc_sec->ps_policy;
+ rc = policy->sp_cops->alloc_reqbuf(ctx->cc_sec, req, msgsize);
+ if (!rc) {
+ LASSERT(req->rq_reqmsg);
+ LASSERT(req->rq_reqbuf || req->rq_clrbuf);
- /* zeroing preallocated buffer */
- if (req->rq_pool)
- memset(req->rq_reqmsg, 0, msgsize);
- }
+ /* zeroing preallocated buffer */
+ if (req->rq_pool)
+ memset(req->rq_reqmsg, 0, msgsize);
+ }
- return rc;
+ return rc;
}
+/**
+ * Used by ptlrpc client to free request buffer of \a req. After this
+ * req->rq_reqmsg is set to NULL and should not be accessed anymore.
+ */
void sptlrpc_cli_free_reqbuf(struct ptlrpc_request *req)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- struct ptlrpc_sec_policy *policy;
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ struct ptlrpc_sec_policy *policy;
- LASSERT(ctx);
- LASSERT(cfs_atomic_read(&ctx->cc_refcount));
- LASSERT(ctx->cc_sec);
- LASSERT(ctx->cc_sec->ps_policy);
+ LASSERT(ctx);
+ LASSERT(ctx->cc_sec);
+ LASSERT(ctx->cc_sec->ps_policy);
+ LASSERT_ATOMIC_POS(&ctx->cc_refcount);
- if (req->rq_reqbuf == NULL && req->rq_clrbuf == NULL)
- return;
+ if (req->rq_reqbuf == NULL && req->rq_clrbuf == NULL)
+ return;
- policy = ctx->cc_sec->ps_policy;
- policy->sp_cops->free_reqbuf(ctx->cc_sec, req);
+ policy = ctx->cc_sec->ps_policy;
+ policy->sp_cops->free_reqbuf(ctx->cc_sec, req);
+ req->rq_reqmsg = NULL;
}
/*
* NOTE caller must guarantee the buffer size is enough for the enlargement
*/
void _sptlrpc_enlarge_msg_inplace(struct lustre_msg *msg,
- int segment, int newsize)
+ int segment, int newsize)
{
- void *src, *dst;
- int oldsize, oldmsg_size, movesize;
+ void *src, *dst;
+ int oldsize, oldmsg_size, movesize;
- LASSERT(segment < msg->lm_bufcount);
- LASSERT(msg->lm_buflens[segment] <= newsize);
+ LASSERT(segment < msg->lm_bufcount);
+ LASSERT(msg->lm_buflens[segment] <= newsize);
- if (msg->lm_buflens[segment] == newsize)
- return;
+ if (msg->lm_buflens[segment] == newsize)
+ return;
- /* nothing to do if we are enlarging the last segment */
- if (segment == msg->lm_bufcount - 1) {
- msg->lm_buflens[segment] = newsize;
- return;
- }
+ /* nothing to do if we are enlarging the last segment */
+ if (segment == msg->lm_bufcount - 1) {
+ msg->lm_buflens[segment] = newsize;
+ return;
+ }
- oldsize = msg->lm_buflens[segment];
+ oldsize = msg->lm_buflens[segment];
- src = lustre_msg_buf(msg, segment + 1, 0);
- msg->lm_buflens[segment] = newsize;
- dst = lustre_msg_buf(msg, segment + 1, 0);
- msg->lm_buflens[segment] = oldsize;
+ src = lustre_msg_buf(msg, segment + 1, 0);
+ msg->lm_buflens[segment] = newsize;
+ dst = lustre_msg_buf(msg, segment + 1, 0);
+ msg->lm_buflens[segment] = oldsize;
- /* move from segment + 1 to end segment */
- LASSERT(msg->lm_magic == LUSTRE_MSG_MAGIC_V2);
- oldmsg_size = lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
- movesize = oldmsg_size - ((unsigned long) src - (unsigned long) msg);
- LASSERT(movesize >= 0);
+ /* move from segment + 1 to end segment */
+ LASSERT(msg->lm_magic == LUSTRE_MSG_MAGIC_V2);
+ oldmsg_size = lustre_msg_size_v2(msg->lm_bufcount, msg->lm_buflens);
+ movesize = oldmsg_size - ((unsigned long) src - (unsigned long) msg);
+ LASSERT(movesize >= 0);
- if (movesize)
- memmove(dst, src, movesize);
+ if (movesize)
+ memmove(dst, src, movesize);
- /* note we don't clear the ares where old data live, not secret */
+ /* note we don't clear the ares where old data live, not secret */
- /* finally set new segment size */
- msg->lm_buflens[segment] = newsize;
+ /* finally set new segment size */
+ msg->lm_buflens[segment] = newsize;
}
EXPORT_SYMBOL(_sptlrpc_enlarge_msg_inplace);
-/*
- * enlarge @segment of upper message req->rq_reqmsg to @newsize, all data
- * will be preserved after enlargement. this must be called after rq_reqmsg has
- * been intialized at least.
+/**
+ * Used by ptlrpc client to enlarge the \a segment of request message pointed
+ * by req->rq_reqmsg to size \a newsize, all previously filled-in data will be
+ * preserved after the enlargement. this must be called after original request
+ * buffer being allocated.
*
- * caller's attention: upon return, rq_reqmsg and rq_reqlen might have
- * been changed.
+ * \note after this be called, rq_reqmsg and rq_reqlen might have been changed,
+ * so caller should refresh its local pointers if needed.
*/
int sptlrpc_cli_enlarge_reqbuf(struct ptlrpc_request *req,
- int segment, int newsize)
+ const struct req_msg_field *field,
+ int newsize)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- struct ptlrpc_sec_cops *cops;
- struct lustre_msg *msg = req->rq_reqmsg;
+ struct req_capsule *pill = &req->rq_pill;
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ struct ptlrpc_sec_cops *cops;
+ struct lustre_msg *msg = req->rq_reqmsg;
+ int segment = __req_capsule_offset(pill, field, RCL_CLIENT);
- LASSERT(ctx);
- LASSERT(msg);
- LASSERT(msg->lm_bufcount > segment);
- LASSERT(msg->lm_buflens[segment] <= newsize);
+ LASSERT(ctx);
+ LASSERT(msg);
+ LASSERT(msg->lm_bufcount > segment);
+ LASSERT(msg->lm_buflens[segment] <= newsize);
- if (msg->lm_buflens[segment] == newsize)
- return 0;
+ if (msg->lm_buflens[segment] == newsize)
+ return 0;
- cops = ctx->cc_sec->ps_policy->sp_cops;
- LASSERT(cops->enlarge_reqbuf);
- return cops->enlarge_reqbuf(ctx->cc_sec, req, segment, newsize);
+ cops = ctx->cc_sec->ps_policy->sp_cops;
+ LASSERT(cops->enlarge_reqbuf);
+ return cops->enlarge_reqbuf(ctx->cc_sec, req, segment, newsize);
}
EXPORT_SYMBOL(sptlrpc_cli_enlarge_reqbuf);
+/**
+ * Used by ptlrpc client to allocate reply buffer of \a req.
+ *
+ * \note After this, req->rq_repmsg is still not accessible.
+ */
int sptlrpc_cli_alloc_repbuf(struct ptlrpc_request *req, int msgsize)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- struct ptlrpc_sec_policy *policy;
- ENTRY;
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ struct ptlrpc_sec_policy *policy;
+
+ ENTRY;
- LASSERT(ctx);
- LASSERT(cfs_atomic_read(&ctx->cc_refcount));
- LASSERT(ctx->cc_sec);
- LASSERT(ctx->cc_sec->ps_policy);
+ LASSERT(ctx);
+ LASSERT(ctx->cc_sec);
+ LASSERT(ctx->cc_sec->ps_policy);
- if (req->rq_repbuf)
- RETURN(0);
+ if (req->rq_repbuf)
+ RETURN(0);
- policy = ctx->cc_sec->ps_policy;
- RETURN(policy->sp_cops->alloc_repbuf(ctx->cc_sec, req, msgsize));
+ policy = ctx->cc_sec->ps_policy;
+ RETURN(policy->sp_cops->alloc_repbuf(ctx->cc_sec, req, msgsize));
}
+/**
+ * Used by ptlrpc client to free reply buffer of \a req. After this
+ * req->rq_repmsg is set to NULL and should not be accessed anymore.
+ */
void sptlrpc_cli_free_repbuf(struct ptlrpc_request *req)
{
- struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
- struct ptlrpc_sec_policy *policy;
- ENTRY;
+ struct ptlrpc_cli_ctx *ctx = req->rq_cli_ctx;
+ struct ptlrpc_sec_policy *policy;
+
+ ENTRY;
- LASSERT(ctx);
- LASSERT(cfs_atomic_read(&ctx->cc_refcount));
- LASSERT(ctx->cc_sec);
- LASSERT(ctx->cc_sec->ps_policy);
+ LASSERT(ctx);
+ LASSERT(ctx->cc_sec);
+ LASSERT(ctx->cc_sec->ps_policy);
+ LASSERT_ATOMIC_POS(&ctx->cc_refcount);
- if (req->rq_repbuf == NULL)
- return;
- LASSERT(req->rq_repbuf_len);
+ if (req->rq_repbuf == NULL)
+ return;
+ LASSERT(req->rq_repbuf_len);
- policy = ctx->cc_sec->ps_policy;
- policy->sp_cops->free_repbuf(ctx->cc_sec, req);
- EXIT;
+ policy = ctx->cc_sec->ps_policy;
+ policy->sp_cops->free_repbuf(ctx->cc_sec, req);
+ req->rq_repmsg = NULL;
+ EXIT;
}
+EXPORT_SYMBOL(sptlrpc_cli_free_repbuf);
int sptlrpc_cli_install_rvs_ctx(struct obd_import *imp,
- struct ptlrpc_cli_ctx *ctx)
+ struct ptlrpc_cli_ctx *ctx)
{
- struct ptlrpc_sec_policy *policy = ctx->cc_sec->ps_policy;
+ struct ptlrpc_sec_policy *policy = ctx->cc_sec->ps_policy;
- if (!policy->sp_cops->install_rctx)
- return 0;
- return policy->sp_cops->install_rctx(imp, ctx->cc_sec, ctx);
+ if (!policy->sp_cops->install_rctx)
+ return 0;
+ return policy->sp_cops->install_rctx(imp, ctx->cc_sec, ctx);
}
int sptlrpc_svc_install_rvs_ctx(struct obd_import *imp,
- struct ptlrpc_svc_ctx *ctx)
-{
- struct ptlrpc_sec_policy *policy = ctx->sc_policy;
+ struct ptlrpc_svc_ctx *ctx)
+{
+ struct ptlrpc_sec_policy *policy = ctx->sc_policy;
+
+ if (!policy->sp_sops->install_rctx)
+ return 0;
+ return policy->sp_sops->install_rctx(imp, ctx);
+}
+
+/* Get SELinux policy info from userspace */
+static int sepol_helper(struct obd_import *imp)
+{
+ char mtime_str[21] = { 0 }, mode_str[2] = { 0 };
+ char *argv[] = {
+ [0] = "/usr/sbin/l_getsepol",
+ [1] = "-o",
+ [2] = NULL, /* obd type */
+ [3] = "-n",
+ [4] = NULL, /* obd name */
+ [5] = "-t",
+ [6] = mtime_str, /* policy mtime */
+ [7] = "-m",
+ [8] = mode_str, /* enforcing mode */
+ [9] = NULL
+ };
+ char *envp[] = {
+ [0] = "HOME=/",
+ [1] = "PATH=/sbin:/usr/sbin",
+ [2] = NULL
+ };
+ signed short ret;
+ int rc = 0;
+
+ if (imp == NULL || imp->imp_obd == NULL ||
+ imp->imp_obd->obd_type == NULL) {
+ rc = -EINVAL;
+ } else {
+ argv[2] = imp->imp_obd->obd_type->typ_name;
+ argv[4] = imp->imp_obd->obd_name;
+ spin_lock(&imp->imp_sec->ps_lock);
+ if (imp->imp_sec->ps_sepol_mtime == 0 &&
+ imp->imp_sec->ps_sepol[0] == '\0') {
+ /* ps_sepol has not been initialized */
+ argv[5] = NULL;
+ argv[7] = NULL;
+ } else {
+ snprintf(mtime_str, sizeof(mtime_str), "%lu",
+ imp->imp_sec->ps_sepol_mtime);
+ mode_str[0] = imp->imp_sec->ps_sepol[0];
+ }
+ spin_unlock(&imp->imp_sec->ps_lock);
+ ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC);
+ rc = ret>>8;
+ }
+
+ return rc;
+}
+
+static inline int sptlrpc_sepol_needs_check(struct ptlrpc_sec *imp_sec)
+{
+ ktime_t checknext;
+
+ if (send_sepol == 0 || !selinux_is_enabled())
+ return 0;
+
+ if (send_sepol == -1)
+ /* send_sepol == -1 means fetch sepol status every time */
+ return 1;
+
+ spin_lock(&imp_sec->ps_lock);
+ checknext = imp_sec->ps_sepol_checknext;
+ spin_unlock(&imp_sec->ps_lock);
+
+ /* next check is too far in time, please update */
+ if (ktime_after(checknext,
+ ktime_add(ktime_get(), ktime_set(send_sepol, 0))))
+ goto setnext;
+
+ if (ktime_before(ktime_get(), checknext))
+ /* too early to fetch sepol status */
+ return 0;
+
+setnext:
+ /* define new sepol_checknext time */
+ spin_lock(&imp_sec->ps_lock);
+ imp_sec->ps_sepol_checknext = ktime_add(ktime_get(),
+ ktime_set(send_sepol, 0));
+ spin_unlock(&imp_sec->ps_lock);
+
+ return 1;
+}
+
+int sptlrpc_get_sepol(struct ptlrpc_request *req)
+{
+ struct ptlrpc_sec *imp_sec = req->rq_import->imp_sec;
+ int rc = 0;
+
+ ENTRY;
+
+ (req->rq_sepol)[0] = '\0';
+
+#ifndef HAVE_SELINUX
+ if (unlikely(send_sepol != 0))
+ CDEBUG(D_SEC,
+ "Client cannot report SELinux status, it was not built against libselinux.\n");
+ RETURN(0);
+#endif
- if (!policy->sp_sops->install_rctx)
- return 0;
- return policy->sp_sops->install_rctx(imp, ctx);
+ if (send_sepol == 0 || !selinux_is_enabled())
+ RETURN(0);
+
+ if (imp_sec == NULL)
+ RETURN(-EINVAL);
+
+ /* Retrieve SELinux status info */
+ if (sptlrpc_sepol_needs_check(imp_sec))
+ rc = sepol_helper(req->rq_import);
+ if (likely(rc == 0)) {
+ spin_lock(&imp_sec->ps_lock);
+ memcpy(req->rq_sepol, imp_sec->ps_sepol,
+ sizeof(req->rq_sepol));
+ spin_unlock(&imp_sec->ps_lock);
+ }
+
+ RETURN(rc);
}
+EXPORT_SYMBOL(sptlrpc_get_sepol);
-/****************************************
- * server side security *
- ****************************************/
+/*
+ * server side security
+ */
static int flavor_allowed(struct sptlrpc_flavor *exp,
- struct ptlrpc_request *req)
+ struct ptlrpc_request *req)
{
- struct sptlrpc_flavor *flvr = &req->rq_flvr;
+ struct sptlrpc_flavor *flvr = &req->rq_flvr;
- if (exp->sf_rpc == SPTLRPC_FLVR_ANY || exp->sf_rpc == flvr->sf_rpc)
- return 1;
+ if (exp->sf_rpc == SPTLRPC_FLVR_ANY || exp->sf_rpc == flvr->sf_rpc)
+ return 1;
- if ((req->rq_ctx_init || req->rq_ctx_fini) &&
- SPTLRPC_FLVR_POLICY(exp->sf_rpc) ==
- SPTLRPC_FLVR_POLICY(flvr->sf_rpc) &&
- SPTLRPC_FLVR_MECH(exp->sf_rpc) == SPTLRPC_FLVR_MECH(flvr->sf_rpc))
- return 1;
+ if ((req->rq_ctx_init || req->rq_ctx_fini) &&
+ SPTLRPC_FLVR_POLICY(exp->sf_rpc) ==
+ SPTLRPC_FLVR_POLICY(flvr->sf_rpc) &&
+ SPTLRPC_FLVR_MECH(exp->sf_rpc) == SPTLRPC_FLVR_MECH(flvr->sf_rpc))
+ return 1;
- return 0;
+ return 0;
}
#define EXP_FLVR_UPDATE_EXPIRE (OBD_TIMEOUT_DEFAULT + 10)
+/**
+ * Given an export \a exp, check whether the flavor of incoming \a req
+ * is allowed by the export \a exp. Main logic is about taking care of
+ * changing configurations. Return 0 means success.
+ */
int sptlrpc_target_export_check(struct obd_export *exp,
- struct ptlrpc_request *req)
-{
- struct sptlrpc_flavor flavor;
-
- if (exp == NULL)
- return 0;
-
- /* client side export has no imp_reverse, skip
- * FIXME maybe we should check flavor this as well??? */
- if (exp->exp_imp_reverse == NULL)
- return 0;
-
- /* don't care about ctx fini rpc */
- if (req->rq_ctx_fini)
- return 0;
-
- cfs_spin_lock(&exp->exp_lock);
-
- /* if flavor just changed (exp->exp_flvr_changed != 0), we wait for
- * the first req with the new flavor, then treat it as current flavor,
- * adapt reverse sec according to it.
- * note the first rpc with new flavor might not be with root ctx, in
- * which case delay the sec_adapt by leaving exp_flvr_adapt == 1. */
- if (unlikely(exp->exp_flvr_changed) &&
- flavor_allowed(&exp->exp_flvr_old[1], req)) {
- /* make the new flavor as "current", and old ones as
- * about-to-expire */
- CDEBUG(D_SEC, "exp %p: just changed: %x->%x\n", exp,
- exp->exp_flvr.sf_rpc, exp->exp_flvr_old[1].sf_rpc);
- flavor = exp->exp_flvr_old[1];
- exp->exp_flvr_old[1] = exp->exp_flvr_old[0];
- exp->exp_flvr_expire[1] = exp->exp_flvr_expire[0];
- exp->exp_flvr_old[0] = exp->exp_flvr;
- exp->exp_flvr_expire[0] = cfs_time_current_sec() +
- EXP_FLVR_UPDATE_EXPIRE;
- exp->exp_flvr = flavor;
-
- /* flavor change finished */
- exp->exp_flvr_changed = 0;
- LASSERT(exp->exp_flvr_adapt == 1);
-
- /* if it's gss, we only interested in root ctx init */
- if (req->rq_auth_gss &&
- !(req->rq_ctx_init && (req->rq_auth_usr_root ||
- req->rq_auth_usr_mdt))) {
- cfs_spin_unlock(&exp->exp_lock);
- CDEBUG(D_SEC, "is good but not root(%d:%d:%d:%d)\n",
- req->rq_auth_gss, req->rq_ctx_init,
- req->rq_auth_usr_root, req->rq_auth_usr_mdt);
- return 0;
- }
-
- exp->exp_flvr_adapt = 0;
- cfs_spin_unlock(&exp->exp_lock);
-
- return sptlrpc_import_sec_adapt(exp->exp_imp_reverse,
- req->rq_svc_ctx, &flavor);
- }
-
- /* if it equals to the current flavor, we accept it, but need to
- * dealing with reverse sec/ctx */
- if (likely(flavor_allowed(&exp->exp_flvr, req))) {
- /* most cases should return here, we only interested in
- * gss root ctx init */
- if (!req->rq_auth_gss || !req->rq_ctx_init ||
- (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt)) {
- cfs_spin_unlock(&exp->exp_lock);
- return 0;
- }
-
- /* if flavor just changed, we should not proceed, just leave
- * it and current flavor will be discovered and replaced
- * shortly, and let _this_ rpc pass through */
- if (exp->exp_flvr_changed) {
- LASSERT(exp->exp_flvr_adapt);
- cfs_spin_unlock(&exp->exp_lock);
- return 0;
- }
-
- if (exp->exp_flvr_adapt) {
- exp->exp_flvr_adapt = 0;
- CDEBUG(D_SEC, "exp %p (%x|%x|%x): do delayed adapt\n",
- exp, exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[0].sf_rpc,
- exp->exp_flvr_old[1].sf_rpc);
- flavor = exp->exp_flvr;
- cfs_spin_unlock(&exp->exp_lock);
-
- return sptlrpc_import_sec_adapt(exp->exp_imp_reverse,
- req->rq_svc_ctx,
- &flavor);
- } else {
- CDEBUG(D_SEC, "exp %p (%x|%x|%x): is current flavor, "
- "install rvs ctx\n", exp, exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[0].sf_rpc,
- exp->exp_flvr_old[1].sf_rpc);
- cfs_spin_unlock(&exp->exp_lock);
-
- return sptlrpc_svc_install_rvs_ctx(exp->exp_imp_reverse,
- req->rq_svc_ctx);
- }
- }
-
- if (exp->exp_flvr_expire[0]) {
- if (exp->exp_flvr_expire[0] >= cfs_time_current_sec()) {
- if (flavor_allowed(&exp->exp_flvr_old[0], req)) {
- CDEBUG(D_SEC, "exp %p (%x|%x|%x): match the "
- "middle one ("CFS_DURATION_T")\n", exp,
- exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[0].sf_rpc,
- exp->exp_flvr_old[1].sf_rpc,
- exp->exp_flvr_expire[0] -
- cfs_time_current_sec());
- cfs_spin_unlock(&exp->exp_lock);
- return 0;
- }
- } else {
- CDEBUG(D_SEC, "mark middle expired\n");
- exp->exp_flvr_expire[0] = 0;
- }
- CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match middle\n", exp,
- exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc,
- req->rq_flvr.sf_rpc);
- }
-
- /* now it doesn't match the current flavor, the only chance we can
- * accept it is match the old flavors which is not expired. */
- if (exp->exp_flvr_changed == 0 && exp->exp_flvr_expire[1]) {
- if (exp->exp_flvr_expire[1] >= cfs_time_current_sec()) {
- if (flavor_allowed(&exp->exp_flvr_old[1], req)) {
- CDEBUG(D_SEC, "exp %p (%x|%x|%x): match the "
- "oldest one ("CFS_DURATION_T")\n", exp,
- exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[0].sf_rpc,
- exp->exp_flvr_old[1].sf_rpc,
- exp->exp_flvr_expire[1] -
- cfs_time_current_sec());
- cfs_spin_unlock(&exp->exp_lock);
- return 0;
- }
- } else {
- CDEBUG(D_SEC, "mark oldest expired\n");
- exp->exp_flvr_expire[1] = 0;
- }
- CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match found\n",
- exp, exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc,
- req->rq_flvr.sf_rpc);
- } else {
- CDEBUG(D_SEC, "exp %p (%x|%x|%x): skip the last one\n",
- exp, exp->exp_flvr.sf_rpc, exp->exp_flvr_old[0].sf_rpc,
- exp->exp_flvr_old[1].sf_rpc);
- }
-
- cfs_spin_unlock(&exp->exp_lock);
-
- CWARN("exp %p(%s): req %p (%u|%u|%u|%u|%u) with "
- "unauthorized flavor %x, expect %x|%x(%+ld)|%x(%+ld)\n",
- exp, exp->exp_obd->obd_name,
- req, req->rq_auth_gss, req->rq_ctx_init, req->rq_ctx_fini,
- req->rq_auth_usr_root, req->rq_auth_usr_mdt, req->rq_flvr.sf_rpc,
- exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[0].sf_rpc,
- exp->exp_flvr_expire[0] ?
- (unsigned long) (exp->exp_flvr_expire[0] -
- cfs_time_current_sec()) : 0,
- exp->exp_flvr_old[1].sf_rpc,
- exp->exp_flvr_expire[1] ?
- (unsigned long) (exp->exp_flvr_expire[1] -
- cfs_time_current_sec()) : 0);
- return -EACCES;
+ struct ptlrpc_request *req)
+{
+ struct sptlrpc_flavor flavor;
+
+ if (exp == NULL)
+ return 0;
+
+ /*
+ * client side export has no imp_reverse, skip
+ * FIXME maybe we should check flavor this as well???
+ */
+ if (exp->exp_imp_reverse == NULL)
+ return 0;
+
+ /* don't care about ctx fini rpc */
+ if (req->rq_ctx_fini)
+ return 0;
+
+ spin_lock(&exp->exp_lock);
+
+ /*
+ * if flavor just changed (exp->exp_flvr_changed != 0), we wait for
+ * the first req with the new flavor, then treat it as current flavor,
+ * adapt reverse sec according to it.
+ * note the first rpc with new flavor might not be with root ctx, in
+ * which case delay the sec_adapt by leaving exp_flvr_adapt == 1.
+ */
+ if (unlikely(exp->exp_flvr_changed) &&
+ flavor_allowed(&exp->exp_flvr_old[1], req)) {
+ /*
+ * make the new flavor as "current", and old ones as
+ * about-to-expire
+ */
+ CDEBUG(D_SEC, "exp %p: just changed: %x->%x\n", exp,
+ exp->exp_flvr.sf_rpc, exp->exp_flvr_old[1].sf_rpc);
+ flavor = exp->exp_flvr_old[1];
+ exp->exp_flvr_old[1] = exp->exp_flvr_old[0];
+ exp->exp_flvr_expire[1] = exp->exp_flvr_expire[0];
+ exp->exp_flvr_old[0] = exp->exp_flvr;
+ exp->exp_flvr_expire[0] = ktime_get_real_seconds() +
+ EXP_FLVR_UPDATE_EXPIRE;
+ exp->exp_flvr = flavor;
+
+ /* flavor change finished */
+ exp->exp_flvr_changed = 0;
+ LASSERT(exp->exp_flvr_adapt == 1);
+
+ /* if it's gss, we only interested in root ctx init */
+ if (req->rq_auth_gss &&
+ !(req->rq_ctx_init &&
+ (req->rq_auth_usr_root || req->rq_auth_usr_mdt ||
+ req->rq_auth_usr_ost))) {
+ spin_unlock(&exp->exp_lock);
+ CDEBUG(D_SEC, "is good but not root(%d:%d:%d:%d:%d)\n",
+ req->rq_auth_gss, req->rq_ctx_init,
+ req->rq_auth_usr_root, req->rq_auth_usr_mdt,
+ req->rq_auth_usr_ost);
+ return 0;
+ }
+
+ exp->exp_flvr_adapt = 0;
+ spin_unlock(&exp->exp_lock);
+
+ return sptlrpc_import_sec_adapt(exp->exp_imp_reverse,
+ req->rq_svc_ctx, &flavor);
+ }
+
+ /*
+ * if it equals to the current flavor, we accept it, but need to
+ * dealing with reverse sec/ctx
+ */
+ if (likely(flavor_allowed(&exp->exp_flvr, req))) {
+ /*
+ * most cases should return here, we only interested in
+ * gss root ctx init
+ */
+ if (!req->rq_auth_gss || !req->rq_ctx_init ||
+ (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt &&
+ !req->rq_auth_usr_ost)) {
+ spin_unlock(&exp->exp_lock);
+ return 0;
+ }
+
+ /*
+ * if flavor just changed, we should not proceed, just leave
+ * it and current flavor will be discovered and replaced
+ * shortly, and let _this_ rpc pass through
+ */
+ if (exp->exp_flvr_changed) {
+ LASSERT(exp->exp_flvr_adapt);
+ spin_unlock(&exp->exp_lock);
+ return 0;
+ }
+
+ if (exp->exp_flvr_adapt) {
+ exp->exp_flvr_adapt = 0;
+ CDEBUG(D_SEC, "exp %p (%x|%x|%x): do delayed adapt\n",
+ exp, exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[0].sf_rpc,
+ exp->exp_flvr_old[1].sf_rpc);
+ flavor = exp->exp_flvr;
+ spin_unlock(&exp->exp_lock);
+
+ return sptlrpc_import_sec_adapt(exp->exp_imp_reverse,
+ req->rq_svc_ctx,
+ &flavor);
+ } else {
+ CDEBUG(D_SEC,
+ "exp %p (%x|%x|%x): is current flavor, install rvs ctx\n",
+ exp, exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[0].sf_rpc,
+ exp->exp_flvr_old[1].sf_rpc);
+ spin_unlock(&exp->exp_lock);
+
+ return sptlrpc_svc_install_rvs_ctx(exp->exp_imp_reverse,
+ req->rq_svc_ctx);
+ }
+ }
+
+ if (exp->exp_flvr_expire[0]) {
+ if (exp->exp_flvr_expire[0] >= ktime_get_real_seconds()) {
+ if (flavor_allowed(&exp->exp_flvr_old[0], req)) {
+ CDEBUG(D_SEC,
+ "exp %p (%x|%x|%x): match the middle one (%lld)\n",
+ exp, exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[0].sf_rpc,
+ exp->exp_flvr_old[1].sf_rpc,
+ (s64)(exp->exp_flvr_expire[0] -
+ ktime_get_real_seconds()));
+ spin_unlock(&exp->exp_lock);
+ return 0;
+ }
+ } else {
+ CDEBUG(D_SEC, "mark middle expired\n");
+ exp->exp_flvr_expire[0] = 0;
+ }
+ CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match middle\n", exp,
+ exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc,
+ req->rq_flvr.sf_rpc);
+ }
+
+ /*
+ * now it doesn't match the current flavor, the only chance we can
+ * accept it is match the old flavors which is not expired.
+ */
+ if (exp->exp_flvr_changed == 0 && exp->exp_flvr_expire[1]) {
+ if (exp->exp_flvr_expire[1] >= ktime_get_real_seconds()) {
+ if (flavor_allowed(&exp->exp_flvr_old[1], req)) {
+ CDEBUG(D_SEC, "exp %p (%x|%x|%x): match the oldest one (%lld)\n",
+ exp,
+ exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[0].sf_rpc,
+ exp->exp_flvr_old[1].sf_rpc,
+ (s64)(exp->exp_flvr_expire[1] -
+ ktime_get_real_seconds()));
+ spin_unlock(&exp->exp_lock);
+ return 0;
+ }
+ } else {
+ CDEBUG(D_SEC, "mark oldest expired\n");
+ exp->exp_flvr_expire[1] = 0;
+ }
+ CDEBUG(D_SEC, "exp %p (%x|%x|%x): %x not match found\n",
+ exp, exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[0].sf_rpc, exp->exp_flvr_old[1].sf_rpc,
+ req->rq_flvr.sf_rpc);
+ } else {
+ CDEBUG(D_SEC, "exp %p (%x|%x|%x): skip the last one\n",
+ exp, exp->exp_flvr.sf_rpc, exp->exp_flvr_old[0].sf_rpc,
+ exp->exp_flvr_old[1].sf_rpc);
+ }
+
+ spin_unlock(&exp->exp_lock);
+
+ CWARN("exp %p(%s): req %p (%u|%u|%u|%u|%u|%u) with unauthorized flavor %x, expect %x|%x(%+lld)|%x(%+lld)\n",
+ exp, exp->exp_obd->obd_name,
+ req, req->rq_auth_gss, req->rq_ctx_init, req->rq_ctx_fini,
+ req->rq_auth_usr_root, req->rq_auth_usr_mdt, req->rq_auth_usr_ost,
+ req->rq_flvr.sf_rpc,
+ exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[0].sf_rpc,
+ exp->exp_flvr_expire[0] ?
+ (s64)(exp->exp_flvr_expire[0] - ktime_get_real_seconds()) : 0,
+ exp->exp_flvr_old[1].sf_rpc,
+ exp->exp_flvr_expire[1] ?
+ (s64)(exp->exp_flvr_expire[1] - ktime_get_real_seconds()) : 0);
+ return -EACCES;
}
EXPORT_SYMBOL(sptlrpc_target_export_check);
void sptlrpc_target_update_exp_flavor(struct obd_device *obd,
- struct sptlrpc_rule_set *rset)
-{
- struct obd_export *exp;
- struct sptlrpc_flavor new_flvr;
-
- LASSERT(obd);
-
- cfs_spin_lock(&obd->obd_dev_lock);
-
- cfs_list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
- if (exp->exp_connection == NULL)
- continue;
-
- /* note if this export had just been updated flavor
- * (exp_flvr_changed == 1), this will override the
- * previous one. */
- cfs_spin_lock(&exp->exp_lock);
- sptlrpc_target_choose_flavor(rset, exp->exp_sp_peer,
- exp->exp_connection->c_peer.nid,
- &new_flvr);
- if (exp->exp_flvr_changed ||
- !flavor_equal(&new_flvr, &exp->exp_flvr)) {
- exp->exp_flvr_old[1] = new_flvr;
- exp->exp_flvr_expire[1] = 0;
- exp->exp_flvr_changed = 1;
- exp->exp_flvr_adapt = 1;
-
- CDEBUG(D_SEC, "exp %p (%s): updated flavor %x->%x\n",
- exp, sptlrpc_part2name(exp->exp_sp_peer),
- exp->exp_flvr.sf_rpc,
- exp->exp_flvr_old[1].sf_rpc);
- }
- cfs_spin_unlock(&exp->exp_lock);
- }
-
- cfs_spin_unlock(&obd->obd_dev_lock);
+ struct sptlrpc_rule_set *rset)
+{
+ struct obd_export *exp;
+ struct sptlrpc_flavor new_flvr;
+
+ LASSERT(obd);
+
+ spin_lock(&obd->obd_dev_lock);
+
+ list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
+ if (exp->exp_connection == NULL)
+ continue;
+
+ /*
+ * note if this export had just been updated flavor
+ * (exp_flvr_changed == 1), this will override the
+ * previous one.
+ */
+ spin_lock(&exp->exp_lock);
+ sptlrpc_target_choose_flavor(rset, exp->exp_sp_peer,
+ exp->exp_connection->c_peer.nid,
+ &new_flvr);
+ if (exp->exp_flvr_changed ||
+ !flavor_equal(&new_flvr, &exp->exp_flvr)) {
+ exp->exp_flvr_old[1] = new_flvr;
+ exp->exp_flvr_expire[1] = 0;
+ exp->exp_flvr_changed = 1;
+ exp->exp_flvr_adapt = 1;
+
+ CDEBUG(D_SEC, "exp %p (%s): updated flavor %x->%x\n",
+ exp, sptlrpc_part2name(exp->exp_sp_peer),
+ exp->exp_flvr.sf_rpc,
+ exp->exp_flvr_old[1].sf_rpc);
+ }
+ spin_unlock(&exp->exp_lock);
+ }
+
+ spin_unlock(&obd->obd_dev_lock);
}
EXPORT_SYMBOL(sptlrpc_target_update_exp_flavor);
static int sptlrpc_svc_check_from(struct ptlrpc_request *req, int svc_rc)
{
- if (svc_rc == SECSVC_DROP)
- return SECSVC_DROP;
-
- switch (req->rq_sp_from) {
- case LUSTRE_SP_CLI:
- case LUSTRE_SP_MDT:
- case LUSTRE_SP_OST:
- case LUSTRE_SP_MGC:
- case LUSTRE_SP_MGS:
- case LUSTRE_SP_ANY:
- break;
- default:
- DEBUG_REQ(D_ERROR, req, "invalid source %u", req->rq_sp_from);
- return SECSVC_DROP;
- }
-
- if (!req->rq_auth_gss)
- return svc_rc;
-
- if (unlikely(req->rq_sp_from == LUSTRE_SP_ANY)) {
- CERROR("not specific part\n");
- return SECSVC_DROP;
- }
-
- /* from MDT, must be authenticated as MDT */
- if (unlikely(req->rq_sp_from == LUSTRE_SP_MDT &&
- !req->rq_auth_usr_mdt)) {
- DEBUG_REQ(D_ERROR, req, "fake source MDT");
- return SECSVC_DROP;
- }
-
- /* from OST, must be callback to MDT and CLI, the reverse sec
- * was from mdt/root keytab, so it should be MDT or root FIXME */
- if (unlikely(req->rq_sp_from == LUSTRE_SP_OST &&
- !req->rq_auth_usr_mdt && !req->rq_auth_usr_root)) {
- DEBUG_REQ(D_ERROR, req, "fake source OST");
- return SECSVC_DROP;
- }
-
- return svc_rc;
+ /* peer's claim is unreliable unless gss is being used */
+ if (!req->rq_auth_gss || svc_rc == SECSVC_DROP)
+ return svc_rc;
+
+ switch (req->rq_sp_from) {
+ case LUSTRE_SP_CLI:
+ if (req->rq_auth_usr_mdt || req->rq_auth_usr_ost) {
+ DEBUG_REQ(D_ERROR, req, "faked source CLI");
+ svc_rc = SECSVC_DROP;
+ }
+ break;
+ case LUSTRE_SP_MDT:
+ if (!req->rq_auth_usr_mdt) {
+ DEBUG_REQ(D_ERROR, req, "faked source MDT");
+ svc_rc = SECSVC_DROP;
+ }
+ break;
+ case LUSTRE_SP_OST:
+ if (!req->rq_auth_usr_ost) {
+ DEBUG_REQ(D_ERROR, req, "faked source OST");
+ svc_rc = SECSVC_DROP;
+ }
+ break;
+ case LUSTRE_SP_MGS:
+ case LUSTRE_SP_MGC:
+ if (!req->rq_auth_usr_root && !req->rq_auth_usr_mdt &&
+ !req->rq_auth_usr_ost) {
+ DEBUG_REQ(D_ERROR, req, "faked source MGC/MGS");
+ svc_rc = SECSVC_DROP;
+ }
+ break;
+ case LUSTRE_SP_ANY:
+ default:
+ DEBUG_REQ(D_ERROR, req, "invalid source %u", req->rq_sp_from);
+ svc_rc = SECSVC_DROP;
+ }
+
+ return svc_rc;
}
+/**
+ * Used by ptlrpc server, to perform transformation upon request message of
+ * incoming \a req. This must be the first thing to do with an incoming
+ * request in ptlrpc layer.
+ *
+ * \retval SECSVC_OK success, and req->rq_reqmsg point to request message in
+ * clear text, size is req->rq_reqlen; also req->rq_svc_ctx is set.
+ * \retval SECSVC_COMPLETE success, the request has been fully processed, and
+ * reply message has been prepared.
+ * \retval SECSVC_DROP failed, this request should be dropped.
+ */
int sptlrpc_svc_unwrap_request(struct ptlrpc_request *req)
{
- struct ptlrpc_sec_policy *policy;
- struct lustre_msg *msg = req->rq_reqbuf;
- int rc;
- ENTRY;
-
- LASSERT(msg);
- LASSERT(req->rq_reqmsg == NULL);
- LASSERT(req->rq_repmsg == NULL);
- LASSERT(req->rq_svc_ctx == NULL);
-
- req->rq_req_swab_mask = 0;
-
- rc = __lustre_unpack_msg(msg, req->rq_reqdata_len);
- switch (rc) {
- case 1:
- lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
- case 0:
- break;
- default:
- CERROR("error unpacking request from %s x"LPU64"\n",
- libcfs_id2str(req->rq_peer), req->rq_xid);
- RETURN(SECSVC_DROP);
- }
-
- req->rq_flvr.sf_rpc = WIRE_FLVR(msg->lm_secflvr);
- req->rq_sp_from = LUSTRE_SP_ANY;
- req->rq_auth_uid = INVALID_UID;
- req->rq_auth_mapped_uid = INVALID_UID;
-
- policy = sptlrpc_wireflavor2policy(req->rq_flvr.sf_rpc);
- if (!policy) {
- CERROR("unsupported rpc flavor %x\n", req->rq_flvr.sf_rpc);
- RETURN(SECSVC_DROP);
- }
-
- LASSERT(policy->sp_sops->accept);
- rc = policy->sp_sops->accept(req);
- sptlrpc_policy_put(policy);
- LASSERT(req->rq_reqmsg || rc != SECSVC_OK);
- LASSERT(req->rq_svc_ctx || rc == SECSVC_DROP);
-
- /*
- * if it's not null flavor (which means embedded packing msg),
- * reset the swab mask for the comming inner msg unpacking.
- */
- if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL)
- req->rq_req_swab_mask = 0;
-
- /* sanity check for the request source */
- rc = sptlrpc_svc_check_from(req, rc);
- RETURN(rc);
-}
-
-int sptlrpc_svc_alloc_rs(struct ptlrpc_request *req,
- int msglen)
-{
- struct ptlrpc_sec_policy *policy;
- struct ptlrpc_reply_state *rs;
- int rc;
- ENTRY;
-
- LASSERT(req->rq_svc_ctx);
- LASSERT(req->rq_svc_ctx->sc_policy);
-
- policy = req->rq_svc_ctx->sc_policy;
- LASSERT(policy->sp_sops->alloc_rs);
-
- rc = policy->sp_sops->alloc_rs(req, msglen);
- if (unlikely(rc == -ENOMEM)) {
- /* failed alloc, try emergency pool */
- rs = lustre_get_emerg_rs(req->rq_rqbd->rqbd_service);
- if (rs == NULL)
- RETURN(-ENOMEM);
-
- req->rq_reply_state = rs;
- rc = policy->sp_sops->alloc_rs(req, msglen);
- if (rc) {
- lustre_put_emerg_rs(rs);
- req->rq_reply_state = NULL;
- }
- }
-
- LASSERT(rc != 0 ||
- (req->rq_reply_state && req->rq_reply_state->rs_msg));
-
- RETURN(rc);
+ struct ptlrpc_sec_policy *policy;
+ struct lustre_msg *msg = req->rq_reqbuf;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(msg);
+ LASSERT(req->rq_reqmsg == NULL);
+ LASSERT(req->rq_repmsg == NULL);
+ LASSERT(req->rq_svc_ctx == NULL);
+
+ req->rq_req_swab_mask = 0;
+
+ rc = __lustre_unpack_msg(msg, req->rq_reqdata_len);
+ switch (rc) {
+ case 1:
+ lustre_set_req_swabbed(req, MSG_PTLRPC_HEADER_OFF);
+ case 0:
+ break;
+ default:
+ CERROR("error unpacking request from %s x%llu\n",
+ libcfs_id2str(req->rq_peer), req->rq_xid);
+ RETURN(SECSVC_DROP);
+ }
+
+ req->rq_flvr.sf_rpc = WIRE_FLVR(msg->lm_secflvr);
+ req->rq_sp_from = LUSTRE_SP_ANY;
+ req->rq_auth_uid = -1; /* set to INVALID_UID */
+ req->rq_auth_mapped_uid = -1;
+
+ policy = sptlrpc_wireflavor2policy(req->rq_flvr.sf_rpc);
+ if (!policy) {
+ CERROR("unsupported rpc flavor %x\n", req->rq_flvr.sf_rpc);
+ RETURN(SECSVC_DROP);
+ }
+
+ LASSERT(policy->sp_sops->accept);
+ rc = policy->sp_sops->accept(req);
+ sptlrpc_policy_put(policy);
+ LASSERT(req->rq_reqmsg || rc != SECSVC_OK);
+ LASSERT(req->rq_svc_ctx || rc == SECSVC_DROP);
+
+ /*
+ * if it's not null flavor (which means embedded packing msg),
+ * reset the swab mask for the comming inner msg unpacking.
+ */
+ if (SPTLRPC_FLVR_POLICY(req->rq_flvr.sf_rpc) != SPTLRPC_POLICY_NULL)
+ req->rq_req_swab_mask = 0;
+
+ /* sanity check for the request source */
+ rc = sptlrpc_svc_check_from(req, rc);
+ RETURN(rc);
}
+/**
+ * Used by ptlrpc server, to allocate reply buffer for \a req. If succeed,
+ * req->rq_reply_state is set, and req->rq_reply_state->rs_msg point to
+ * a buffer of \a msglen size.
+ */
+int sptlrpc_svc_alloc_rs(struct ptlrpc_request *req, int msglen)
+{
+ struct ptlrpc_sec_policy *policy;
+ struct ptlrpc_reply_state *rs;
+ int rc;
+
+ ENTRY;
+
+ LASSERT(req->rq_svc_ctx);
+ LASSERT(req->rq_svc_ctx->sc_policy);
+
+ policy = req->rq_svc_ctx->sc_policy;
+ LASSERT(policy->sp_sops->alloc_rs);
+
+ rc = policy->sp_sops->alloc_rs(req, msglen);
+ if (unlikely(rc == -ENOMEM)) {
+ struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
+
+ if (svcpt->scp_service->srv_max_reply_size <
+ msglen + sizeof(struct ptlrpc_reply_state)) {
+ /* Just return failure if the size is too big */
+ CERROR("size of message is too big (%zd), %d allowed\n",
+ msglen + sizeof(struct ptlrpc_reply_state),
+ svcpt->scp_service->srv_max_reply_size);
+ RETURN(-ENOMEM);
+ }
+
+ /* failed alloc, try emergency pool */
+ rs = lustre_get_emerg_rs(svcpt);
+ if (rs == NULL)
+ RETURN(-ENOMEM);
+
+ req->rq_reply_state = rs;
+ rc = policy->sp_sops->alloc_rs(req, msglen);
+ if (rc) {
+ lustre_put_emerg_rs(rs);
+ req->rq_reply_state = NULL;
+ }
+ }
+
+ LASSERT(rc != 0 ||
+ (req->rq_reply_state && req->rq_reply_state->rs_msg));
+
+ RETURN(rc);
+}
+
+/**
+ * Used by ptlrpc server, to perform transformation upon reply message.
+ *
+ * \post req->rq_reply_off is set to approriate server-controlled reply offset.
+ * \post req->rq_repmsg and req->rq_reply_state->rs_msg becomes inaccessible.
+ */
int sptlrpc_svc_wrap_reply(struct ptlrpc_request *req)
{
- struct ptlrpc_sec_policy *policy;
- int rc;
- ENTRY;
+ struct ptlrpc_sec_policy *policy;
+ int rc;
- LASSERT(req->rq_svc_ctx);
- LASSERT(req->rq_svc_ctx->sc_policy);
+ ENTRY;
- policy = req->rq_svc_ctx->sc_policy;
- LASSERT(policy->sp_sops->authorize);
+ LASSERT(req->rq_svc_ctx);
+ LASSERT(req->rq_svc_ctx->sc_policy);
- rc = policy->sp_sops->authorize(req);
- LASSERT(rc || req->rq_reply_state->rs_repdata_len);
+ policy = req->rq_svc_ctx->sc_policy;
+ LASSERT(policy->sp_sops->authorize);
- RETURN(rc);
+ rc = policy->sp_sops->authorize(req);
+ LASSERT(rc || req->rq_reply_state->rs_repdata_len);
+
+ RETURN(rc);
}
+/**
+ * Used by ptlrpc server, to free reply_state.
+ */
void sptlrpc_svc_free_rs(struct ptlrpc_reply_state *rs)
{
- struct ptlrpc_sec_policy *policy;
- unsigned int prealloc;
- ENTRY;
+ struct ptlrpc_sec_policy *policy;
+ unsigned int prealloc;
+
+ ENTRY;
- LASSERT(rs->rs_svc_ctx);
- LASSERT(rs->rs_svc_ctx->sc_policy);
+ LASSERT(rs->rs_svc_ctx);
+ LASSERT(rs->rs_svc_ctx->sc_policy);
- policy = rs->rs_svc_ctx->sc_policy;
- LASSERT(policy->sp_sops->free_rs);
+ policy = rs->rs_svc_ctx->sc_policy;
+ LASSERT(policy->sp_sops->free_rs);
- prealloc = rs->rs_prealloc;
- policy->sp_sops->free_rs(rs);
+ prealloc = rs->rs_prealloc;
+ policy->sp_sops->free_rs(rs);
- if (prealloc)
- lustre_put_emerg_rs(rs);
- EXIT;
+ if (prealloc)
+ lustre_put_emerg_rs(rs);
+ EXIT;
}
void sptlrpc_svc_ctx_addref(struct ptlrpc_request *req)
{
- struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
+ struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
- if (ctx == NULL)
- return;
-
- LASSERT(cfs_atomic_read(&ctx->sc_refcount) > 0);
- cfs_atomic_inc(&ctx->sc_refcount);
+ if (ctx != NULL)
+ atomic_inc(&ctx->sc_refcount);
}
void sptlrpc_svc_ctx_decref(struct ptlrpc_request *req)
{
- struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
+ struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
- if (ctx == NULL)
- return;
+ if (ctx == NULL)
+ return;
- LASSERT(cfs_atomic_read(&ctx->sc_refcount) > 0);
- if (cfs_atomic_dec_and_test(&ctx->sc_refcount)) {
- if (ctx->sc_policy->sp_sops->free_ctx)
- ctx->sc_policy->sp_sops->free_ctx(ctx);
- }
- req->rq_svc_ctx = NULL;
+ LASSERT_ATOMIC_POS(&ctx->sc_refcount);
+ if (atomic_dec_and_test(&ctx->sc_refcount)) {
+ if (ctx->sc_policy->sp_sops->free_ctx)
+ ctx->sc_policy->sp_sops->free_ctx(ctx);
+ }
+ req->rq_svc_ctx = NULL;
}
void sptlrpc_svc_ctx_invalidate(struct ptlrpc_request *req)
{
- struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
+ struct ptlrpc_svc_ctx *ctx = req->rq_svc_ctx;
- if (ctx == NULL)
- return;
+ if (ctx == NULL)
+ return;
- LASSERT(cfs_atomic_read(&ctx->sc_refcount) > 0);
- if (ctx->sc_policy->sp_sops->invalidate_ctx)
- ctx->sc_policy->sp_sops->invalidate_ctx(ctx);
+ LASSERT_ATOMIC_POS(&ctx->sc_refcount);
+ if (ctx->sc_policy->sp_sops->invalidate_ctx)
+ ctx->sc_policy->sp_sops->invalidate_ctx(ctx);
}
EXPORT_SYMBOL(sptlrpc_svc_ctx_invalidate);
-/****************************************
- * bulk security *
- ****************************************/
+/*
+ * bulk security
+ */
+/**
+ * Perform transformation upon bulk data pointed by \a desc. This is called
+ * before transforming the request message.
+ */
int sptlrpc_cli_wrap_bulk(struct ptlrpc_request *req,
- struct ptlrpc_bulk_desc *desc)
+ struct ptlrpc_bulk_desc *desc)
{
- struct ptlrpc_cli_ctx *ctx;
+ struct ptlrpc_cli_ctx *ctx;
- LASSERT(req->rq_bulk_read || req->rq_bulk_write);
+ LASSERT(req->rq_bulk_read || req->rq_bulk_write);
- if (!req->rq_pack_bulk)
- return 0;
+ if (!req->rq_pack_bulk)
+ return 0;
- ctx = req->rq_cli_ctx;
- if (ctx->cc_ops->wrap_bulk)
- return ctx->cc_ops->wrap_bulk(ctx, req, desc);
- return 0;
+ ctx = req->rq_cli_ctx;
+ if (ctx->cc_ops->wrap_bulk)
+ return ctx->cc_ops->wrap_bulk(ctx, req, desc);
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_cli_wrap_bulk);
-/*
+/**
+ * This is called after unwrap the reply message.
* return nob of actual plain text size received, or error code.
*/
int sptlrpc_cli_unwrap_bulk_read(struct ptlrpc_request *req,
- struct ptlrpc_bulk_desc *desc,
- int nob)
+ struct ptlrpc_bulk_desc *desc,
+ int nob)
{
- struct ptlrpc_cli_ctx *ctx;
- int rc;
+ struct ptlrpc_cli_ctx *ctx;
+ int rc;
- LASSERT(req->rq_bulk_read && !req->rq_bulk_write);
+ LASSERT(req->rq_bulk_read && !req->rq_bulk_write);
- if (!req->rq_pack_bulk)
- return desc->bd_nob_transferred;
+ if (!req->rq_pack_bulk)
+ return desc->bd_nob_transferred;
- ctx = req->rq_cli_ctx;
- if (ctx->cc_ops->unwrap_bulk) {
- rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc);
- if (rc < 0)
- return rc;
- }
- return desc->bd_nob_transferred;
+ ctx = req->rq_cli_ctx;
+ if (ctx->cc_ops->unwrap_bulk) {
+ rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc);
+ if (rc < 0)
+ return rc;
+ }
+ return desc->bd_nob_transferred;
}
EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_read);
-/*
+/**
+ * This is called after unwrap the reply message.
* return 0 for success or error code.
*/
int sptlrpc_cli_unwrap_bulk_write(struct ptlrpc_request *req,
- struct ptlrpc_bulk_desc *desc)
+ struct ptlrpc_bulk_desc *desc)
{
- struct ptlrpc_cli_ctx *ctx;
- int rc;
+ struct ptlrpc_cli_ctx *ctx;
+ int rc;
- LASSERT(!req->rq_bulk_read && req->rq_bulk_write);
+ LASSERT(!req->rq_bulk_read && req->rq_bulk_write);
- if (!req->rq_pack_bulk)
- return 0;
+ if (!req->rq_pack_bulk)
+ return 0;
- ctx = req->rq_cli_ctx;
- if (ctx->cc_ops->unwrap_bulk) {
- rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc);
- if (rc < 0)
- return rc;
- }
+ ctx = req->rq_cli_ctx;
+ if (ctx->cc_ops->unwrap_bulk) {
+ rc = ctx->cc_ops->unwrap_bulk(ctx, req, desc);
+ if (rc < 0)
+ return rc;
+ }
- /*
- * if everything is going right, nob should equals to nob_transferred.
- * in case of privacy mode, nob_transferred needs to be adjusted.
- */
- if (desc->bd_nob != desc->bd_nob_transferred) {
- CERROR("nob %d doesn't match transferred nob %d",
- desc->bd_nob, desc->bd_nob_transferred);
- return -EPROTO;
- }
+ /*
+ * if everything is going right, nob should equals to nob_transferred.
+ * in case of privacy mode, nob_transferred needs to be adjusted.
+ */
+ if (desc->bd_nob != desc->bd_nob_transferred) {
+ CERROR("nob %d doesn't match transferred nob %d\n",
+ desc->bd_nob, desc->bd_nob_transferred);
+ return -EPROTO;
+ }
- return 0;
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_cli_unwrap_bulk_write);
+#ifdef HAVE_SERVER_SUPPORT
+/**
+ * Performe transformation upon outgoing bulk read.
+ */
int sptlrpc_svc_wrap_bulk(struct ptlrpc_request *req,
- struct ptlrpc_bulk_desc *desc)
+ struct ptlrpc_bulk_desc *desc)
{
- struct ptlrpc_svc_ctx *ctx;
+ struct ptlrpc_svc_ctx *ctx;
- LASSERT(req->rq_bulk_read);
+ LASSERT(req->rq_bulk_read);
- if (!req->rq_pack_bulk)
- return 0;
+ if (!req->rq_pack_bulk)
+ return 0;
- ctx = req->rq_svc_ctx;
- if (ctx->sc_policy->sp_sops->wrap_bulk)
- return ctx->sc_policy->sp_sops->wrap_bulk(req, desc);
+ ctx = req->rq_svc_ctx;
+ if (ctx->sc_policy->sp_sops->wrap_bulk)
+ return ctx->sc_policy->sp_sops->wrap_bulk(req, desc);
- return 0;
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_svc_wrap_bulk);
+/**
+ * Performe transformation upon incoming bulk write.
+ */
int sptlrpc_svc_unwrap_bulk(struct ptlrpc_request *req,
- struct ptlrpc_bulk_desc *desc)
-{
- struct ptlrpc_svc_ctx *ctx;
- int rc;
-
- LASSERT(req->rq_bulk_write);
-
- /*
- * if it's in privacy mode, transferred should >= expected; otherwise
- * transferred should == expected.
- */
- if (desc->bd_nob_transferred < desc->bd_nob ||
- (desc->bd_nob_transferred > desc->bd_nob &&
- SPTLRPC_FLVR_BULK_SVC(req->rq_flvr.sf_rpc) !=
- SPTLRPC_BULK_SVC_PRIV)) {
- DEBUG_REQ(D_ERROR, req, "truncated bulk GET %d(%d)",
- desc->bd_nob_transferred, desc->bd_nob);
- return -ETIMEDOUT;
- }
-
- if (!req->rq_pack_bulk)
- return 0;
-
- ctx = req->rq_svc_ctx;
- if (ctx->sc_policy->sp_sops->unwrap_bulk) {
- rc = ctx->sc_policy->sp_sops->unwrap_bulk(req, desc);
- if (rc)
- CERROR("error unwrap bulk: %d\n", rc);
- }
-
- /* return 0 to allow reply be sent */
- return 0;
+ struct ptlrpc_bulk_desc *desc)
+{
+ struct ptlrpc_svc_ctx *ctx;
+ int rc;
+
+ LASSERT(req->rq_bulk_write);
+
+ /*
+ * if it's in privacy mode, transferred should >= expected; otherwise
+ * transferred should == expected.
+ */
+ if (desc->bd_nob_transferred < desc->bd_nob ||
+ (desc->bd_nob_transferred > desc->bd_nob &&
+ SPTLRPC_FLVR_BULK_SVC(req->rq_flvr.sf_rpc) !=
+ SPTLRPC_BULK_SVC_PRIV)) {
+ DEBUG_REQ(D_ERROR, req, "truncated bulk GET %d(%d)",
+ desc->bd_nob_transferred, desc->bd_nob);
+ return -ETIMEDOUT;
+ }
+
+ if (!req->rq_pack_bulk)
+ return 0;
+
+ ctx = req->rq_svc_ctx;
+ if (ctx->sc_policy->sp_sops->unwrap_bulk) {
+ rc = ctx->sc_policy->sp_sops->unwrap_bulk(req, desc);
+ if (rc)
+ CERROR("error unwrap bulk: %d\n", rc);
+ }
+
+ /* return 0 to allow reply be sent */
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_svc_unwrap_bulk);
+/**
+ * Prepare buffers for incoming bulk write.
+ */
int sptlrpc_svc_prep_bulk(struct ptlrpc_request *req,
- struct ptlrpc_bulk_desc *desc)
+ struct ptlrpc_bulk_desc *desc)
{
- struct ptlrpc_svc_ctx *ctx;
+ struct ptlrpc_svc_ctx *ctx;
- LASSERT(req->rq_bulk_write);
+ LASSERT(req->rq_bulk_write);
- if (!req->rq_pack_bulk)
- return 0;
+ if (!req->rq_pack_bulk)
+ return 0;
- ctx = req->rq_svc_ctx;
- if (ctx->sc_policy->sp_sops->prep_bulk)
- return ctx->sc_policy->sp_sops->prep_bulk(req, desc);
+ ctx = req->rq_svc_ctx;
+ if (ctx->sc_policy->sp_sops->prep_bulk)
+ return ctx->sc_policy->sp_sops->prep_bulk(req, desc);
- return 0;
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_svc_prep_bulk);
-/****************************************
- * user descriptor helpers *
- ****************************************/
+#endif /* HAVE_SERVER_SUPPORT */
+
+/*
+ * user descriptor helpers
+ */
int sptlrpc_current_user_desc_size(void)
{
- int ngroups;
+ int ngroups;
-#ifdef __KERNEL__
- ngroups = current_ngroups;
+ ngroups = current_ngroups;
- if (ngroups > LUSTRE_MAX_GROUPS)
- ngroups = LUSTRE_MAX_GROUPS;
-#else
- ngroups = 0;
-#endif
- return sptlrpc_user_desc_size(ngroups);
+ if (ngroups > LUSTRE_MAX_GROUPS)
+ ngroups = LUSTRE_MAX_GROUPS;
+ return sptlrpc_user_desc_size(ngroups);
}
EXPORT_SYMBOL(sptlrpc_current_user_desc_size);
int sptlrpc_pack_user_desc(struct lustre_msg *msg, int offset)
{
- struct ptlrpc_user_desc *pud;
+ struct ptlrpc_user_desc *pud;
- pud = lustre_msg_buf(msg, offset, 0);
+ pud = lustre_msg_buf(msg, offset, 0);
- pud->pud_uid = cfs_current()->uid;
- pud->pud_gid = cfs_current()->gid;
- pud->pud_fsuid = cfs_current()->fsuid;
- pud->pud_fsgid = cfs_current()->fsgid;
- pud->pud_cap = cfs_curproc_cap_pack();
- pud->pud_ngroups = (msg->lm_buflens[offset] - sizeof(*pud)) / 4;
+ pud->pud_uid = from_kuid(&init_user_ns, current_uid());
+ pud->pud_gid = from_kgid(&init_user_ns, current_gid());
+ pud->pud_fsuid = from_kuid(&init_user_ns, current_fsuid());
+ pud->pud_fsgid = from_kgid(&init_user_ns, current_fsgid());
+ pud->pud_cap = cfs_curproc_cap_pack();
+ pud->pud_ngroups = (msg->lm_buflens[offset] - sizeof(*pud)) / 4;
-#ifdef __KERNEL__
- task_lock(current);
- if (pud->pud_ngroups > current_ngroups)
- pud->pud_ngroups = current_ngroups;
- memcpy(pud->pud_groups, cfs_current()->group_info->blocks[0],
- pud->pud_ngroups * sizeof(__u32));
- task_unlock(current);
-#endif
+ task_lock(current);
+ if (pud->pud_ngroups > current_ngroups)
+ pud->pud_ngroups = current_ngroups;
+#ifdef HAVE_GROUP_INFO_GID
+ memcpy(pud->pud_groups, current_cred()->group_info->gid,
+ pud->pud_ngroups * sizeof(__u32));
+#else /* !HAVE_GROUP_INFO_GID */
+ memcpy(pud->pud_groups, current_cred()->group_info->blocks[0],
+ pud->pud_ngroups * sizeof(__u32));
+#endif /* HAVE_GROUP_INFO_GID */
+ task_unlock(current);
- return 0;
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_pack_user_desc);
int sptlrpc_unpack_user_desc(struct lustre_msg *msg, int offset, int swabbed)
{
- struct ptlrpc_user_desc *pud;
- int i;
-
- pud = lustre_msg_buf(msg, offset, sizeof(*pud));
- if (!pud)
- return -EINVAL;
-
- if (swabbed) {
- __swab32s(&pud->pud_uid);
- __swab32s(&pud->pud_gid);
- __swab32s(&pud->pud_fsuid);
- __swab32s(&pud->pud_fsgid);
- __swab32s(&pud->pud_cap);
- __swab32s(&pud->pud_ngroups);
- }
-
- if (pud->pud_ngroups > LUSTRE_MAX_GROUPS) {
- CERROR("%u groups is too large\n", pud->pud_ngroups);
- return -EINVAL;
- }
-
- if (sizeof(*pud) + pud->pud_ngroups * sizeof(__u32) >
- msg->lm_buflens[offset]) {
- CERROR("%u groups are claimed but bufsize only %u\n",
- pud->pud_ngroups, msg->lm_buflens[offset]);
- return -EINVAL;
- }
-
- if (swabbed) {
- for (i = 0; i < pud->pud_ngroups; i++)
- __swab32s(&pud->pud_groups[i]);
- }
-
- return 0;
+ struct ptlrpc_user_desc *pud;
+ int i;
+
+ pud = lustre_msg_buf(msg, offset, sizeof(*pud));
+ if (!pud)
+ return -EINVAL;
+
+ if (swabbed) {
+ __swab32s(&pud->pud_uid);
+ __swab32s(&pud->pud_gid);
+ __swab32s(&pud->pud_fsuid);
+ __swab32s(&pud->pud_fsgid);
+ __swab32s(&pud->pud_cap);
+ __swab32s(&pud->pud_ngroups);
+ }
+
+ if (pud->pud_ngroups > LUSTRE_MAX_GROUPS) {
+ CERROR("%u groups is too large\n", pud->pud_ngroups);
+ return -EINVAL;
+ }
+
+ if (sizeof(*pud) + pud->pud_ngroups * sizeof(__u32) >
+ msg->lm_buflens[offset]) {
+ CERROR("%u groups are claimed but bufsize only %u\n",
+ pud->pud_ngroups, msg->lm_buflens[offset]);
+ return -EINVAL;
+ }
+
+ if (swabbed) {
+ for (i = 0; i < pud->pud_ngroups; i++)
+ __swab32s(&pud->pud_groups[i]);
+ }
+
+ return 0;
}
EXPORT_SYMBOL(sptlrpc_unpack_user_desc);
-/****************************************
- * misc helpers *
- ****************************************/
+/*
+ * misc helpers
+ */
-const char * sec2target_str(struct ptlrpc_sec *sec)
+const char *sec2target_str(struct ptlrpc_sec *sec)
{
- if (!sec || !sec->ps_import || !sec->ps_import->imp_obd)
- return "*";
- if (sec_is_reverse(sec))
- return "c";
- return obd_uuid2str(&sec->ps_import->imp_obd->u.cli.cl_target_uuid);
+ if (!sec || !sec->ps_import || !sec->ps_import->imp_obd)
+ return "*";
+ if (sec_is_reverse(sec))
+ return "c";
+ return obd_uuid2str(&sec->ps_import->imp_obd->u.cli.cl_target_uuid);
}
EXPORT_SYMBOL(sec2target_str);
*/
int sptlrpc_flavor_has_bulk(struct sptlrpc_flavor *flvr)
{
- switch (SPTLRPC_FLVR_BULK_SVC(flvr->sf_rpc)) {
- case SPTLRPC_BULK_SVC_INTG:
- case SPTLRPC_BULK_SVC_PRIV:
- return 1;
- default:
- return 0;
- }
+ switch (SPTLRPC_FLVR_BULK_SVC(flvr->sf_rpc)) {
+ case SPTLRPC_BULK_SVC_INTG:
+ case SPTLRPC_BULK_SVC_PRIV:
+ return 1;
+ default:
+ return 0;
+ }
}
EXPORT_SYMBOL(sptlrpc_flavor_has_bulk);
-/****************************************
- * crypto API helper/alloc blkciper *
- ****************************************/
+/*
+ * crypto API helper/alloc blkciper
+ */
-/****************************************
- * initialize/finalize *
- ****************************************/
+/*
+ * initialize/finalize
+ */
-int __init sptlrpc_init(void)
+int sptlrpc_init(void)
{
- int rc;
+ int rc;
- cfs_rwlock_init(&policy_lock);
+ rwlock_init(&policy_lock);
- rc = sptlrpc_gc_init();
- if (rc)
- goto out;
+ rc = sptlrpc_gc_init();
+ if (rc)
+ goto out;
- rc = sptlrpc_conf_init();
- if (rc)
- goto out_gc;
+ rc = sptlrpc_conf_init();
+ if (rc)
+ goto out_gc;
- rc = sptlrpc_enc_pool_init();
- if (rc)
- goto out_conf;
+ rc = sptlrpc_enc_pool_init();
+ if (rc)
+ goto out_conf;
- rc = sptlrpc_null_init();
- if (rc)
- goto out_pool;
+ rc = sptlrpc_null_init();
+ if (rc)
+ goto out_pool;
- rc = sptlrpc_plain_init();
- if (rc)
- goto out_null;
+ rc = sptlrpc_plain_init();
+ if (rc)
+ goto out_null;
- rc = sptlrpc_lproc_init();
- if (rc)
- goto out_plain;
+ rc = sptlrpc_lproc_init();
+ if (rc)
+ goto out_plain;
- return 0;
+ return 0;
out_plain:
- sptlrpc_plain_fini();
+ sptlrpc_plain_fini();
out_null:
- sptlrpc_null_fini();
+ sptlrpc_null_fini();
out_pool:
- sptlrpc_enc_pool_fini();
+ sptlrpc_enc_pool_fini();
out_conf:
- sptlrpc_conf_fini();
+ sptlrpc_conf_fini();
out_gc:
- sptlrpc_gc_fini();
+ sptlrpc_gc_fini();
out:
- return rc;
+ return rc;
}
-void __exit sptlrpc_fini(void)
+void sptlrpc_fini(void)
{
- sptlrpc_lproc_fini();
- sptlrpc_plain_fini();
- sptlrpc_null_fini();
- sptlrpc_enc_pool_fini();
- sptlrpc_conf_fini();
- sptlrpc_gc_fini();
+ sptlrpc_lproc_fini();
+ sptlrpc_plain_fini();
+ sptlrpc_null_fini();
+ sptlrpc_enc_pool_fini();
+ sptlrpc_conf_fini();
+ sptlrpc_gc_fini();
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff