Viewing: sec_config.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2008, 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/
*/
#define DEBUG_SUBSYSTEM S_SEC
#include <linux/crypto.h>
#include <linux/key.h>
#include <obd.h>
#include <obd_class.h>
#include <obd_support.h>
#include <lustre_net.h>
#include <lustre_import.h>
#include <lustre_log.h>
#include <lustre_disk.h>
#include <lustre_dlm.h>
#include <uapi/linux/lustre/lustre_param.h>
#include <lustre_sec.h>
#include "ptlrpc_internal.h"
const char *sptlrpc_part2name(enum lustre_sec_part part)
{
switch (part) {
case LUSTRE_SP_CLI:
return "cli";
case LUSTRE_SP_MDT:
return "mdt";
case LUSTRE_SP_OST:
return "ost";
case LUSTRE_SP_MGC:
return "mgc";
case LUSTRE_SP_MGS:
return "mgs";
case LUSTRE_SP_ANY:
return "any";
default:
return "err";
}
}
EXPORT_SYMBOL(sptlrpc_part2name);
enum lustre_sec_part sptlrpc_target_sec_part(struct obd_device *obd)
{
const char *type = obd->obd_type->typ_name;
if (!strcmp(type, LUSTRE_MDT_NAME))
return LUSTRE_SP_MDT;
if (!strcmp(type, LUSTRE_OST_NAME))
return LUSTRE_SP_OST;
if (!strcmp(type, LUSTRE_MGS_NAME))
return LUSTRE_SP_MGS;
CERROR("unknown target %p(%s)\n", obd, type);
return LUSTRE_SP_ANY;
}
/* user supplied flavor string parsing */
/* format: <base_flavor>[-<bulk_type:alg_spec>] */
int sptlrpc_parse_flavor(const char *str, struct sptlrpc_flavor *flvr)
{
char buf[32];
char *bulk, *alg;
memset(flvr, 0, sizeof(*flvr));
if (str == NULL || str[0] == '\0') {
flvr->sf_rpc = SPTLRPC_FLVR_INVALID;
return 0;
}
strscpy(buf, str, sizeof(buf));
bulk = strchr(buf, '-');
if (bulk)
*bulk++ = '\0';
flvr->sf_rpc = sptlrpc_name2flavor_base(buf);
if (flvr->sf_rpc == SPTLRPC_FLVR_INVALID)
goto err_out;
/* currently only base flavor "plain" can have bulk specification. */
if (flvr->sf_rpc == SPTLRPC_FLVR_PLAIN) {
flvr->u_bulk.hash.hash_alg = BULK_HASH_ALG_ADLER32;
if (bulk) {
/* format: plain-hash:<hash_alg> */
alg = strchr(bulk, ':');
if (alg == NULL)
goto err_out;
*alg++ = '\0';
if (strcmp(bulk, "hash"))
goto err_out;
flvr->u_bulk.hash.hash_alg = sptlrpc_get_hash_alg(alg);
if (flvr->u_bulk.hash.hash_alg >= BULK_HASH_ALG_MAX)
goto err_out;
}
if (flvr->u_bulk.hash.hash_alg == BULK_HASH_ALG_NULL)
flvr_set_bulk_svc(&flvr->sf_rpc, SPTLRPC_BULK_SVC_NULL);
else
flvr_set_bulk_svc(&flvr->sf_rpc, SPTLRPC_BULK_SVC_INTG);
} else {
if (bulk)
goto err_out;
}
flvr->sf_flags = 0;
return 0;
err_out:
CERROR("invalid flavor string: %s\n", str);
return -EINVAL;
}
EXPORT_SYMBOL(sptlrpc_parse_flavor);
/* configure rules */
static void get_default_flavor(struct sptlrpc_flavor *sf)
{
memset(sf, 0, sizeof(*sf));
sf->sf_rpc = SPTLRPC_FLVR_NULL;
sf->sf_flags = 0;
}
static void sptlrpc_rule_init(struct sptlrpc_rule *rule)
{
rule->sr_netid = LNET_NET_ANY;
rule->sr_from = LUSTRE_SP_ANY;
rule->sr_to = LUSTRE_SP_ANY;
rule->sr_padding = 0;
get_default_flavor(&rule->sr_flvr);
}
/* format: network[.direction]=flavor */
int sptlrpc_parse_rule(char *param, struct sptlrpc_rule *rule)
{
char *flavor, *dir;
int rc;
sptlrpc_rule_init(rule);
flavor = strchr(param, '=');
if (flavor == NULL) {
CERROR("invalid param, no '='\n");
RETURN(-EINVAL);
}
*flavor++ = '\0';
dir = strchr(param, '.');
if (dir)
*dir++ = '\0';
/* 1.1 network */
if (strcmp(param, "default")) {
rule->sr_netid = libcfs_str2net(param);
if (rule->sr_netid == LNET_NET_ANY) {
CERROR("invalid network name: %s\n", param);
RETURN(-EINVAL);
}
}
/* 1.2 direction */
if (dir) {
if (!strcmp(dir, "mdt2ost")) {
rule->sr_from = LUSTRE_SP_MDT;
rule->sr_to = LUSTRE_SP_OST;
} else if (!strcmp(dir, "mdt2mdt")) {
rule->sr_from = LUSTRE_SP_MDT;
rule->sr_to = LUSTRE_SP_MDT;
} else if (!strcmp(dir, "cli2ost")) {
rule->sr_from = LUSTRE_SP_CLI;
rule->sr_to = LUSTRE_SP_OST;
} else if (!strcmp(dir, "cli2mdt")) {
rule->sr_from = LUSTRE_SP_CLI;
rule->sr_to = LUSTRE_SP_MDT;
} else {
CERROR("invalid rule dir segment: %s\n", dir);
RETURN(-EINVAL);
}
}
/* 2.1 flavor */
rc = sptlrpc_parse_flavor(flavor, &rule->sr_flvr);
if (rc)
RETURN(-EINVAL);
RETURN(0);
}
EXPORT_SYMBOL(sptlrpc_parse_rule);
void sptlrpc_rule_set_free(struct sptlrpc_rule_set *rset)
{
LASSERT(rset->srs_nslot ||
(rset->srs_nrule == 0 && rset->srs_rules == NULL));
if (rset->srs_nslot) {
OBD_FREE_PTR_ARRAY(rset->srs_rules, rset->srs_nslot);
sptlrpc_rule_set_init(rset);
}
}
EXPORT_SYMBOL(sptlrpc_rule_set_free);
/* return 0 if the rule set could accomodate one more rule. */
int sptlrpc_rule_set_expand(struct sptlrpc_rule_set *rset)
{
struct sptlrpc_rule *rules;
int nslot;
might_sleep();
if (rset->srs_nrule < rset->srs_nslot)
return 0;
nslot = rset->srs_nslot + 8;
/* better use realloc() if available */
OBD_ALLOC_PTR_ARRAY(rules, nslot);
if (rules == NULL)
return -ENOMEM;
if (rset->srs_nrule) {
LASSERT(rset->srs_nslot && rset->srs_rules);
memcpy(rules, rset->srs_rules,
rset->srs_nrule * sizeof(*rset->srs_rules));
OBD_FREE_PTR_ARRAY(rset->srs_rules, rset->srs_nslot);
}
rset->srs_rules = rules;
rset->srs_nslot = nslot;
return 0;
}
static inline int rule_spec_dir(struct sptlrpc_rule *rule)
{
return (rule->sr_from != LUSTRE_SP_ANY ||
rule->sr_to != LUSTRE_SP_ANY);
}
static inline int rule_spec_net(struct sptlrpc_rule *rule)
{
return (rule->sr_netid != LNET_NET_ANY);
}
static inline int rule_match_dir(struct sptlrpc_rule *r1,
struct sptlrpc_rule *r2)
{
return (r1->sr_from == r2->sr_from && r1->sr_to == r2->sr_to);
}
static inline int rule_match_net(struct sptlrpc_rule *r1,
struct sptlrpc_rule *r2)
{
return (r1->sr_netid == r2->sr_netid);
}
/*
* merge @rule into @rset.
* the @rset slots might be expanded.
*/
int sptlrpc_rule_set_merge(struct sptlrpc_rule_set *rset,
struct sptlrpc_rule *rule)
{
struct sptlrpc_rule *p = rset->srs_rules;
int spec_dir, spec_net;
int rc, n, match = 0;
might_sleep();
spec_net = rule_spec_net(rule);
spec_dir = rule_spec_dir(rule);
for (n = 0; n < rset->srs_nrule; n++) {
p = &rset->srs_rules[n];
/* test network match, if failed:
* - spec rule: skip rules which is also spec rule match, until
* we hit a wild rule, which means no more chance
* - wild rule: skip until reach the one which is also wild
* and matches
*/
if (!rule_match_net(p, rule)) {
if (spec_net) {
if (rule_spec_net(p))
continue;
else
break;
} else {
continue;
}
}
/* test dir match, same logic as net matching */
if (!rule_match_dir(p, rule)) {
if (spec_dir) {
if (rule_spec_dir(p))
continue;
else
break;
} else {
continue;
}
}
/* find a match */
match = 1;
break;
}
if (match) {
LASSERT(n >= 0 && n < rset->srs_nrule);
if (rule->sr_flvr.sf_rpc == SPTLRPC_FLVR_INVALID) {
/* remove this rule */
if (n < rset->srs_nrule - 1)
memmove(&rset->srs_rules[n],
&rset->srs_rules[n + 1],
(rset->srs_nrule - n - 1) *
sizeof(*rule));
rset->srs_nrule--;
} else {
/* override the rule */
memcpy(&rset->srs_rules[n], rule, sizeof(*rule));
}
} else {
LASSERT(n >= 0 && n <= rset->srs_nrule);
if (rule->sr_flvr.sf_rpc != SPTLRPC_FLVR_INVALID) {
rc = sptlrpc_rule_set_expand(rset);
if (rc)
return rc;
if (n < rset->srs_nrule)
memmove(&rset->srs_rules[n + 1],
&rset->srs_rules[n],
(rset->srs_nrule - n) * sizeof(*rule));
memcpy(&rset->srs_rules[n], rule, sizeof(*rule));
rset->srs_nrule++;
} else {
CDEBUG(D_CONFIG, "ignore the unmatched deletion\n");
}
}
return 0;
}
EXPORT_SYMBOL(sptlrpc_rule_set_merge);
/**
* sptlrpc_rule_set_choose() - given from/to/nid, determine a matching flavor
* in ruleset.
* @rset: pointer to rule set to be searched
* @from: where request is coming (client, MDT, OST)
* @to: where request is going
* @nid: pointer to lnet_nid (network identifier)
* @sf: Choosen flavor is stored [out]
*
* return 1 if a match found, otherwise return 0.
*/
int sptlrpc_rule_set_choose(struct sptlrpc_rule_set *rset,
enum lustre_sec_part from,
enum lustre_sec_part to,
struct lnet_nid *nid,
struct sptlrpc_flavor *sf)
{
struct sptlrpc_rule *r;
int n;
if (nid_is_lo0(nid))
/* do not enforce any sec flavor on loopback connection */
return 0;
for (n = 0; n < rset->srs_nrule; n++) {
r = &rset->srs_rules[n];
if (!LNET_NID_IS_ANY(nid) &&
r->sr_netid != LNET_NET_ANY &&
__be16_to_cpu(nid->nid_num) != r->sr_netid)
continue;
if (from != LUSTRE_SP_ANY && r->sr_from != LUSTRE_SP_ANY &&
from != r->sr_from)
continue;
if (to != LUSTRE_SP_ANY && r->sr_to != LUSTRE_SP_ANY &&
to != r->sr_to)
continue;
*sf = r->sr_flvr;
return 1;
}
return 0;
}
void sptlrpc_rule_set_dump(struct sptlrpc_rule_set *rset)
{
struct sptlrpc_rule *r;
int n;
for (n = 0; n < rset->srs_nrule; n++) {
r = &rset->srs_rules[n];
CDEBUG(D_SEC, "<%02d> from %x to %x, net %x, rpc %x\n", n,
r->sr_from, r->sr_to, r->sr_netid, r->sr_flvr.sf_rpc);
}
}
static int sptlrpc_rule_set_extract(struct sptlrpc_rule_set *gen,
struct sptlrpc_rule_set *tgt,
enum lustre_sec_part from,
enum lustre_sec_part to,
struct sptlrpc_rule_set *rset)
{
struct sptlrpc_rule_set *src[2] = { gen, tgt };
struct sptlrpc_rule *rule;
int i, n, rc;
might_sleep();
/* merge general rules firstly, then target-specific rules */
for (i = 0; i < 2; i++) {
if (src[i] == NULL)
continue;
for (n = 0; n < src[i]->srs_nrule; n++) {
rule = &src[i]->srs_rules[n];
if (from != LUSTRE_SP_ANY &&
rule->sr_from != LUSTRE_SP_ANY &&
rule->sr_from != from)
continue;
if (to != LUSTRE_SP_ANY &&
rule->sr_to != LUSTRE_SP_ANY &&
rule->sr_to != to)
continue;
rc = sptlrpc_rule_set_merge(rset, rule);
if (rc) {
CERROR("can't merge: %d\n", rc);
return rc;
}
}
}
return 0;
}
/* sptlrpc configuration support */
struct sptlrpc_conf_tgt {
struct list_head sct_list;
char sct_name[MAX_OBD_NAME];
struct sptlrpc_rule_set sct_rset;
};
struct sptlrpc_conf {
struct list_head sc_list;
char sc_fsname[MTI_NAME_MAXLEN];
unsigned int sc_modified; /* modified during updating */
unsigned int sc_updated:1, /* updated copy from MGS */
sc_local:1; /* local copy from target */
struct sptlrpc_rule_set sc_rset; /* fs general rules */
struct list_head sc_tgts; /* target-specific rules */
};
static struct mutex sptlrpc_conf_lock;
static LIST_HEAD(sptlrpc_confs);
static void sptlrpc_conf_free_rsets(struct sptlrpc_conf *conf)
{
struct sptlrpc_conf_tgt *conf_tgt, *conf_tgt_next;
sptlrpc_rule_set_free(&conf->sc_rset);
list_for_each_entry_safe(conf_tgt, conf_tgt_next,
&conf->sc_tgts, sct_list) {
sptlrpc_rule_set_free(&conf_tgt->sct_rset);
list_del(&conf_tgt->sct_list);
OBD_FREE_PTR(conf_tgt);
}
LASSERT(list_empty(&conf->sc_tgts));
conf->sc_updated = 0;
conf->sc_local = 0;
}
static void sptlrpc_conf_free(struct sptlrpc_conf *conf)
{
CDEBUG(D_SEC, "free sptlrpc conf %s\n", conf->sc_fsname);
sptlrpc_conf_free_rsets(conf);
list_del(&conf->sc_list);
OBD_FREE_PTR(conf);
}
static
struct sptlrpc_conf_tgt *sptlrpc_conf_get_tgt(struct sptlrpc_conf *conf,
const char *name,
int create)
{
struct sptlrpc_conf_tgt *conf_tgt;
list_for_each_entry(conf_tgt, &conf->sc_tgts, sct_list) {
if (strcmp(conf_tgt->sct_name, name) == 0)
return conf_tgt;
}
if (!create)
return NULL;
OBD_ALLOC_PTR(conf_tgt);
if (conf_tgt) {
strscpy(conf_tgt->sct_name, name, sizeof(conf_tgt->sct_name));
sptlrpc_rule_set_init(&conf_tgt->sct_rset);
list_add(&conf_tgt->sct_list, &conf->sc_tgts);
}
return conf_tgt;
}
static
struct sptlrpc_conf *sptlrpc_conf_get(const char *fsname,
int create)
{
struct sptlrpc_conf *conf;
list_for_each_entry(conf, &sptlrpc_confs, sc_list) {
if (strcmp(conf->sc_fsname, fsname) == 0)
return conf;
}
if (!create)
return NULL;
OBD_ALLOC_PTR(conf);
if (conf == NULL)
return NULL;
if (strscpy(conf->sc_fsname, fsname, sizeof(conf->sc_fsname)) < 0) {
OBD_FREE_PTR(conf);
return NULL;
}
sptlrpc_rule_set_init(&conf->sc_rset);
INIT_LIST_HEAD(&conf->sc_tgts);
list_add(&conf->sc_list, &sptlrpc_confs);
CDEBUG(D_SEC, "create sptlrpc conf %s\n", conf->sc_fsname);
return conf;
}
/* caller must hold conf_lock already. */
static int sptlrpc_conf_merge_rule(struct sptlrpc_conf *conf,
const char *target,
struct sptlrpc_rule *rule)
{
struct sptlrpc_conf_tgt *conf_tgt;
struct sptlrpc_rule_set *rule_set;
/* fsname == target means general rules for the whole fs */
if (strcmp(conf->sc_fsname, target) == 0) {
rule_set = &conf->sc_rset;
} else {
conf_tgt = sptlrpc_conf_get_tgt(conf, target, 1);
if (conf_tgt) {
rule_set = &conf_tgt->sct_rset;
} else {
CERROR("out of memory, can't merge rule!\n");
return -ENOMEM;
}
}
return sptlrpc_rule_set_merge(rule_set, rule);
}
/*
* process one LCFG_SPTLRPC_CONF record. if @conf is NULL, we
* find one through the target name in the record inside conf_lock;
* otherwise means caller already hold conf_lock.
*/
static int __sptlrpc_process_config(char *target, const char *fsname,
struct sptlrpc_rule *rule,
struct sptlrpc_conf *conf)
{
int rc;
ENTRY;
if (!conf) {
if (!fsname)
return -ENODEV;
mutex_lock(&sptlrpc_conf_lock);
conf = sptlrpc_conf_get(fsname, 0);
if (!conf) {
CERROR("can't find conf\n");
rc = -ENOMEM;
} else {
rc = sptlrpc_conf_merge_rule(conf, target, rule);
}
mutex_unlock(&sptlrpc_conf_lock);
} else {
LASSERT(mutex_is_locked(&sptlrpc_conf_lock));
rc = sptlrpc_conf_merge_rule(conf, target, rule);
}
if (!rc)
conf->sc_modified++;
RETURN(rc);
}
/**
* sptlrpc_process_config() - process a config record related to the sec policy
* @lcfg: pointer to struct lustre_cfg (config record)
*
* Return:
* * %0 on success
* * %negative on failure
*/
int sptlrpc_process_config(struct lustre_cfg *lcfg)
{
char fsname[MTI_NAME_MAXLEN];
struct sptlrpc_rule rule;
char *target, *param;
int rc;
print_lustre_cfg(lcfg);
target = lustre_cfg_string(lcfg, 1);
if (!target) {
CERROR("missing target name\n");
return -EINVAL;
}
param = lustre_cfg_string(lcfg, 2);
if (!param) {
CERROR("missing parameter\n");
return -EINVAL;
}
/* parse rule to make sure the format is correct */
if (strncmp(param, PARAM_SRPC_FLVR,
sizeof(PARAM_SRPC_FLVR) - 1) != 0) {
CERROR("Invalid sptlrpc parameter: %s\n", param);
return -EINVAL;
}
param += sizeof(PARAM_SRPC_FLVR) - 1;
CDEBUG(D_SEC, "processing rule: %s.%s\n", target, param);
/*
* Three types of targets exist for sptlrpc using conf_param
* 1. '_mgs' which targets mgc srpc settings. Treat it as
* as a special file system name.
* 2. target is a device which can be fsname-MDTXXXX or
* fsname-OSTXXXX. This can be verified by the function
* server_name2fsname.
* 3. If both above conditions are not meet then the target
* is a actual filesystem.
*/
if (server_name2fsname(target, fsname, NULL))
strscpy(fsname, target, sizeof(fsname));
rc = sptlrpc_parse_rule(param, &rule);
if (rc)
return rc;
return __sptlrpc_process_config(target, fsname, &rule, NULL);
}
EXPORT_SYMBOL(sptlrpc_process_config);
static int logname2fsname(const char *logname, char *buf, int buflen)
{
char *ptr;
int len;
ptr = strrchr(logname, '-');
if (ptr == NULL || strcmp(ptr, "-sptlrpc")) {
CERROR("%s is not a sptlrpc config log\n", logname);
return -EINVAL;
}
len = min((int) (ptr - logname), buflen - 1);
memcpy(buf, logname, len);
buf[len] = '\0';
return 0;
}
void sptlrpc_conf_log_update_begin(const char *logname)
{
struct sptlrpc_conf *conf;
char fsname[16];
if (logname2fsname(logname, fsname, sizeof(fsname)))
return;
mutex_lock(&sptlrpc_conf_lock);
conf = sptlrpc_conf_get(fsname, 0);
if (conf) {
if (conf->sc_local) {
LASSERT(conf->sc_updated == 0);
sptlrpc_conf_free_rsets(conf);
}
conf->sc_modified = 0;
}
mutex_unlock(&sptlrpc_conf_lock);
}
EXPORT_SYMBOL(sptlrpc_conf_log_update_begin);
/* mark a config log has been updated */
void sptlrpc_conf_log_update_end(const char *logname)
{
struct sptlrpc_conf *conf;
char fsname[16];
if (logname2fsname(logname, fsname, sizeof(fsname)))
return;
mutex_lock(&sptlrpc_conf_lock);
conf = sptlrpc_conf_get(fsname, 0);
if (conf) {
/* if original state is not updated, make sure the
* modified counter > 0 to enforce updating local copy.
*/
if (conf->sc_updated == 0)
conf->sc_modified++;
conf->sc_updated = 1;
}
mutex_unlock(&sptlrpc_conf_lock);
}
EXPORT_SYMBOL(sptlrpc_conf_log_update_end);
void sptlrpc_conf_log_start(const char *logname)
{
char fsname[16];
if (logname2fsname(logname, fsname, sizeof(fsname)))
return;
mutex_lock(&sptlrpc_conf_lock);
sptlrpc_conf_get(fsname, 1);
mutex_unlock(&sptlrpc_conf_lock);
}
EXPORT_SYMBOL(sptlrpc_conf_log_start);
void sptlrpc_conf_log_stop(const char *logname)
{
struct sptlrpc_conf *conf;
char fsname[16];
if (logname2fsname(logname, fsname, sizeof(fsname)))
return;
mutex_lock(&sptlrpc_conf_lock);
conf = sptlrpc_conf_get(fsname, 0);
if (conf)
sptlrpc_conf_free(conf);
mutex_unlock(&sptlrpc_conf_lock);
}
EXPORT_SYMBOL(sptlrpc_conf_log_stop);
static inline void flavor_set_flags(struct sptlrpc_flavor *sf,
enum lustre_sec_part from,
enum lustre_sec_part to,
unsigned int fl_udesc)
{
/* null flavor doesn't need to set any flavor, and in fact
* we'd better not do that because everybody share a single sec.
*/
if (sf->sf_rpc == SPTLRPC_FLVR_NULL)
return;
if (from == LUSTRE_SP_MDT) {
/* MDT->MDT; MDT->OST */
sf->sf_flags |= PTLRPC_SEC_FL_ROOTONLY;
} else if (from == LUSTRE_SP_CLI && to == LUSTRE_SP_OST) {
/* CLI->OST */
sf->sf_flags |= PTLRPC_SEC_FL_ROOTONLY | PTLRPC_SEC_FL_BULK;
} else if (from == LUSTRE_SP_CLI && to == LUSTRE_SP_MDT) {
/* CLI->MDT */
if (fl_udesc && sf->sf_rpc != SPTLRPC_FLVR_NULL)
sf->sf_flags |= PTLRPC_SEC_FL_UDESC;
}
/* Some flavors use a single uid (0) context */
if (flvr_is_rootonly(sf->sf_rpc))
sf->sf_flags |= PTLRPC_SEC_FL_ROOTONLY;
/* User descriptor might need to be cleared */
if (flvr_allows_user_desc(sf->sf_rpc) == 0)
sf->sf_flags &= ~PTLRPC_SEC_FL_UDESC;
}
void sptlrpc_conf_choose_flavor(enum lustre_sec_part from,
enum lustre_sec_part to,
struct obd_uuid *target,
struct lnet_nid *nid,
struct sptlrpc_flavor *sf)
{
struct sptlrpc_conf *conf;
struct sptlrpc_conf_tgt *conf_tgt;
char name[MTI_NAME_MAXLEN];
int len, rc = 0;
obd_uuid2fsname(name, target->uuid, sizeof(name));
mutex_lock(&sptlrpc_conf_lock);
conf = sptlrpc_conf_get(name, 0);
if (conf == NULL)
goto out;
/* convert uuid name (supposed end with _UUID) to target name */
len = strlen(target->uuid);
LASSERT(len > 5);
memcpy(name, target->uuid, len - 5);
name[len - 5] = '\0';
conf_tgt = sptlrpc_conf_get_tgt(conf, name, 0);
if (conf_tgt) {
rc = sptlrpc_rule_set_choose(&conf_tgt->sct_rset,
from, to, nid, sf);
if (rc)
goto out;
}
rc = sptlrpc_rule_set_choose(&conf->sc_rset, from, to,
nid, sf);
out:
mutex_unlock(&sptlrpc_conf_lock);
if (rc == 0)
get_default_flavor(sf);
flavor_set_flags(sf, from, to, 1);
}
/*
* called by target devices, determine the expected flavor from
* certain peer (from, nid).
*/
void sptlrpc_target_choose_flavor(struct sptlrpc_rule_set *rset,
enum lustre_sec_part from,
struct lnet_nid *nid,
struct sptlrpc_flavor *sf)
{
if (sptlrpc_rule_set_choose(rset, from, LUSTRE_SP_ANY, nid, sf) == 0)
get_default_flavor(sf);
}
#define SEC_ADAPT_DELAY (10)
/**
* sptlrpc_conf_client_adapt() - notify the sptlrpc config has changed
* @obd: pointer to obd device (client side, OSC/MDC)
*
* called by client devices, notify the sptlrpc config has changed and
* do import_sec_adapt later.
*/
void sptlrpc_conf_client_adapt(struct obd_device *obd)
{
struct obd_import *imp;
int rc;
ENTRY;
LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) == 0 ||
strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) == 0);
CDEBUG(D_SEC, "obd %s\n", obd->u.cli.cl_target_uuid.uuid);
/* serialize with connect/disconnect import */
with_imp_locked_nested(obd, imp, rc, OBD_CLI_SEM_MDCOSC) {
write_lock(&imp->imp_sec_lock);
if (imp->imp_sec)
imp->imp_sec_expire = ktime_get_real_seconds() +
SEC_ADAPT_DELAY;
write_unlock(&imp->imp_sec_lock);
}
EXIT;
}
EXPORT_SYMBOL(sptlrpc_conf_client_adapt);
/*
* called by target devices, extract sptlrpc rules which applies to
* this target, to be used for future rpc flavor checking.
*/
int sptlrpc_conf_target_get_rules(struct obd_device *obd,
struct sptlrpc_rule_set *rset)
{
struct sptlrpc_conf *conf;
struct sptlrpc_conf_tgt *conf_tgt;
enum lustre_sec_part sp_dst;
char fsname[MTI_NAME_MAXLEN];
int rc = 0;
ENTRY;
if (strcmp(obd->obd_type->typ_name, LUSTRE_MDT_NAME) == 0) {
sp_dst = LUSTRE_SP_MDT;
} else if (strcmp(obd->obd_type->typ_name, LUSTRE_OST_NAME) == 0) {
sp_dst = LUSTRE_SP_OST;
} else {
CERROR("unexpected obd type %s\n", obd->obd_type->typ_name);
RETURN(-EINVAL);
}
obd_uuid2fsname(fsname, obd->obd_uuid.uuid, sizeof(fsname));
mutex_lock(&sptlrpc_conf_lock);
conf = sptlrpc_conf_get(fsname, 0);
if (conf == NULL) {
CERROR("missing sptlrpc config log\n");
rc = -EFAULT;
} else {
/* extract rule set for this target */
conf_tgt = sptlrpc_conf_get_tgt(conf, obd->obd_name, 0);
rc = sptlrpc_rule_set_extract(&conf->sc_rset,
conf_tgt ? &conf_tgt->sct_rset : NULL,
LUSTRE_SP_ANY, sp_dst, rset);
}
mutex_unlock(&sptlrpc_conf_lock);
RETURN(rc);
}
int sptlrpc_conf_init(void)
{
mutex_init(&sptlrpc_conf_lock);
return 0;
}
void sptlrpc_conf_fini(void)
{
struct sptlrpc_conf *conf, *conf_next;
mutex_lock(&sptlrpc_conf_lock);
list_for_each_entry_safe(conf, conf_next, &sptlrpc_confs, sc_list)
sptlrpc_conf_free(conf);
LASSERT(list_empty(&sptlrpc_confs));
mutex_unlock(&sptlrpc_conf_lock);
}
