-/* -*- 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.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Copyright (C) 2004-2006 Cluster File Systems, Inc.
- * Author: Lai Siyao <lsy@clusterfs.com>
- * Author: Fan Yong <fanyong@clusterfs.com>
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
+ * 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
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * Copyright (c) 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * lustre/mdt/mdt_idmap.c
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Author: Lai Siyao <lsy@clusterfs.com>
+ * Author: Fan Yong <fanyong@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
#define DEBUG_SUBSYSTEM S_MDS
-#ifndef AUTOCONF_INCLUDED
-#include <linux/config.h>
-#endif
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/errno.h>
#include <linux/version.h>
#include <linux/unistd.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <linux/fs.h>
#include <linux/stat.h>
#include <asm/uaccess.h>
#include <linux/slab.h>
-#include <asm/segment.h>
-#include <libcfs/kp30.h>
+#include <libcfs/libcfs.h>
+#include <libcfs/lucache.h>
#include <obd.h>
#include <obd_class.h>
#include <obd_support.h>
#include <lustre_dlm.h>
#include <lustre_sec.h>
#include <lustre_lib.h>
-#include <lustre_ucache.h>
#include "mdt_internal.h"
-enum {
- MDT_IDMAP_NOTFOUND = -1,
-};
-
-struct mdt_idmap_entry {
- struct list_head mie_rmt_hash; /* hashed as mie_rmt_id; */
- struct list_head mie_lcl_hash; /* hashed as mie_lcl_id; */
- int mie_refcount;
- uid_t mie_rmt_id; /* remote uid/gid */
- uid_t mie_lcl_id; /* local uid/gid */
-};
-
-/* uid/gid mapping */
-static struct mdt_idmap_table *mdt_idmap_alloc(void)
-{
- struct mdt_idmap_table *tbl;
- int i, j;
-
- OBD_ALLOC_PTR(tbl);
- if (!tbl)
- return NULL;
-
- spin_lock_init(&tbl->mit_lock);
- for (i = 0; i < ARRAY_SIZE(tbl->mit_idmaps); i++)
- for (j = 0; j < ARRAY_SIZE(tbl->mit_idmaps[i]); j++)
- INIT_LIST_HEAD(&tbl->mit_idmaps[i][j]);
-
- return tbl;
-}
-
-static struct mdt_idmap_entry *idmap_entry_alloc(__u32 mie_rmt_id,
- __u32 mie_lcl_id)
-{
- struct mdt_idmap_entry *e;
-
- OBD_ALLOC_PTR(e);
- if (!e)
- return NULL;
-
- INIT_LIST_HEAD(&e->mie_rmt_hash);
- INIT_LIST_HEAD(&e->mie_lcl_hash);
- e->mie_refcount = 1;
- e->mie_rmt_id = mie_rmt_id;
- e->mie_lcl_id = mie_lcl_id;
-
- return e;
-}
-
-static void idmap_entry_free(struct mdt_idmap_entry *e)
-{
- if (!list_empty(&e->mie_rmt_hash))
- list_del(&e->mie_rmt_hash);
- if (!list_empty(&e->mie_lcl_hash))
- list_del(&e->mie_lcl_hash);
- OBD_FREE_PTR(e);
-}
-
-int mdt_init_idmap(struct mdt_thread_info *info)
-{
- struct ptlrpc_request *req = mdt_info_req(info);
- char *client = libcfs_nid2str(req->rq_peer.nid);
- struct mdt_export_data *med = mdt_req2med(req);
- struct obd_device *obd = req->rq_export->exp_obd;
- struct obd_connect_data *data, *reply;
- int rc = 0, remote;
- ENTRY;
-
- data = req_capsule_client_get(&info->mti_pill, &RMF_CONNECT_DATA);
- reply = req_capsule_server_get(&info->mti_pill, &RMF_CONNECT_DATA);
- if (data == NULL || reply == NULL)
- RETURN(-EFAULT);
-
- if (!req->rq_auth_gss || req->rq_auth_usr_mdt) {
- med->med_rmtclient = 0;
- reply->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
- //reply->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
- RETURN(0);
- }
-
- remote = data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT;
-
- if (remote) {
- med->med_rmtclient = 1;
- if (!req->rq_auth_remote)
- CWARN("client (local realm) %s -> target %s asked "
- "to be remote!\n", client, obd->obd_name);
- } else if (req->rq_auth_remote) {
- med->med_rmtclient = 1;
- CWARN("client (remote realm) %s -> target %s forced "
- "to be remote!\n", client, obd->obd_name);
- }
-
- if (med->med_rmtclient) {
- med->med_nllu = data->ocd_nllu;
- med->med_nllg = data->ocd_nllg;
- if (!med->med_idmap)
- med->med_idmap = mdt_idmap_alloc();
- if (!med->med_idmap) {
- CERROR("client %s -> target %s failed to alloc idmap!\n"
- , client, obd->obd_name);
- RETURN(-ENOMEM);
- }
-
- reply->ocd_connect_flags &= ~OBD_CONNECT_LCL_CLIENT;
- //reply->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT;
- CDEBUG(D_SEC, "client %s -> target %s is remote.\n",
- client, obd->obd_name);
-
- /* NB, MDT_CONNECT establish root idmap too! */
- rc = mdt_handle_idmap(info);
- } else {
- if (req->rq_auth_uid == INVALID_UID) {
- CERROR("client %s -> target %s: user is not "
- "authenticated!\n", client, obd->obd_name);
- RETURN(-EACCES);
- }
- reply->ocd_connect_flags &= ~OBD_CONNECT_RMT_CLIENT;
- //reply->ocd_connect_flags |= OBD_CONNECT_LCL_CLIENT;
- }
-
- RETURN(rc);
-}
-
-static void idmap_clear_mie_rmt_hash(struct list_head *list)
+int mdt_init_idmap(struct tgt_session_info *tsi)
{
- struct mdt_idmap_entry *e;
- int i;
-
- for (i = 0; i < MDT_IDMAP_HASHSIZE; i++) {
- while (!list_empty(&list[i])) {
- e = list_entry(list[i].next, struct mdt_idmap_entry,
- mie_rmt_hash);
- idmap_entry_free(e);
- }
- }
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct mdt_export_data *med = mdt_req2med(req);
+ struct obd_export *exp = req->rq_export;
+ char *client = libcfs_nid2str(req->rq_peer.nid);
+ int rc = 0;
+ ENTRY;
+
+ if (exp_connect_rmtclient(exp)) {
+ mutex_lock(&med->med_idmap_mutex);
+ if (!med->med_idmap)
+ med->med_idmap = lustre_idmap_init();
+ mutex_unlock(&med->med_idmap_mutex);
+
+ if (IS_ERR(med->med_idmap)) {
+ long err = PTR_ERR(med->med_idmap);
+
+ med->med_idmap = NULL;
+ CERROR("%s: client %s -> target %s "
+ "failed to init idmap [%ld]!\n",
+ tgt_name(tsi->tsi_tgt), client,
+ tgt_name(tsi->tsi_tgt), err);
+ RETURN(err);
+ } else if (!med->med_idmap) {
+ CERROR("%s: client %s -> target %s "
+ "failed to init(2) idmap!\n",
+ tgt_name(tsi->tsi_tgt), client,
+ tgt_name(tsi->tsi_tgt));
+ RETURN(-ENOMEM);
+ }
+
+ CDEBUG(D_SEC, "%s: client %s -> target %s is remote.\n",
+ tgt_name(tsi->tsi_tgt), client,
+ tgt_name(tsi->tsi_tgt));
+ /* NB, MDS_CONNECT establish root idmap too! */
+ rc = mdt_handle_idmap(tsi);
+ }
+ RETURN(rc);
}
void mdt_cleanup_idmap(struct mdt_export_data *med)
{
- struct mdt_idmap_table *tbl = med->med_idmap;
- int i;
-
- LASSERT(med->med_rmtclient);
- LASSERT(tbl);
-
- spin_lock(&tbl->mit_lock);
- idmap_clear_mie_rmt_hash(tbl->mit_idmaps[RMT_UIDMAP_IDX]);
- idmap_clear_mie_rmt_hash(tbl->mit_idmaps[RMT_GIDMAP_IDX]);
-
- /* paranoid checking */
- for (i = 0; i < MDT_IDMAP_HASHSIZE; i++) {
- LASSERT(list_empty(&tbl->mit_idmaps[LCL_UIDMAP_IDX][i]));
- LASSERT(list_empty(&tbl->mit_idmaps[LCL_GIDMAP_IDX][i]));
+ mutex_lock(&med->med_idmap_mutex);
+ if (med->med_idmap != NULL) {
+ lustre_idmap_fini(med->med_idmap);
+ med->med_idmap = NULL;
}
- spin_unlock(&tbl->mit_lock);
-
- OBD_FREE_PTR(tbl);
- med->med_idmap = NULL;
+ mutex_unlock(&med->med_idmap_mutex);
}
static inline void mdt_revoke_export_locks(struct obd_export *exp)
ldlm_revoke_export_locks(exp);
}
-static
-struct mdt_idmap_entry *idmap_lookup_entry(struct list_head *mie_rmt_hash,
- uid_t mie_rmt_id, uid_t mie_lcl_id)
-{
- struct list_head *rmt_head =
- &mie_rmt_hash[MDT_IDMAP_HASHFUNC(mie_rmt_id)];
- struct mdt_idmap_entry *e;
-
- list_for_each_entry(e, rmt_head, mie_rmt_hash) {
- if ((e->mie_rmt_id == mie_rmt_id) &&
- (e->mie_lcl_id == mie_lcl_id))
- return e;
- }
- return NULL;
-}
-
-/*
- * return value
- * NULL: not found entry
- * ERR_PTR(-EACCES): found multi->single mapped entry
- * others: found normal entry
- */
-static
-struct mdt_idmap_entry *idmap_search_entry(struct list_head *mie_rmt_hash,
- uid_t mie_rmt_id,
- struct list_head *mie_lcl_hash,
- uid_t mie_lcl_id,
- const char *warn_msg)
-{
- struct list_head *rmt_head =
- &mie_rmt_hash[MDT_IDMAP_HASHFUNC(mie_rmt_id)];
- struct list_head *lcl_head =
- &mie_lcl_hash[MDT_IDMAP_HASHFUNC(mie_lcl_id)];
- struct mdt_idmap_entry *e;
-
- list_for_each_entry(e, rmt_head, mie_rmt_hash) {
- if (e->mie_rmt_id == mie_rmt_id) {
- if (e->mie_lcl_id == mie_lcl_id) {
- e->mie_refcount++;
- return e;
- } else {
- CERROR("%s: rmt id %u already be mapped to %u"
- " (new %u)\n", warn_msg, e->mie_rmt_id,
- e->mie_lcl_id, mie_lcl_id);
- return ERR_PTR(-EACCES);
- }
- }
- }
-
- list_for_each_entry(e, lcl_head, mie_lcl_hash) {
- if (e->mie_lcl_id == mie_lcl_id) {
- if (e->mie_rmt_id == mie_rmt_id) {
- e->mie_refcount++;
- return e;
- } else {
- CERROR("%s: lcl id %u already be mapped from %u"
- " (new %u)\n", warn_msg, e->mie_lcl_id,
- e->mie_rmt_id, mie_rmt_id);
- return ERR_PTR(-EACCES);
- }
- }
- }
-
- return NULL;
-}
-
-static
-struct mdt_idmap_entry *idmap_insert_entry(struct list_head *mie_rmt_hash,
- struct list_head *mie_lcl_hash,
- struct mdt_idmap_entry *new,
- const char *warn_msg)
-{
- struct list_head *rmt_head =
- &mie_rmt_hash[MDT_IDMAP_HASHFUNC(new->mie_rmt_id)];
- struct list_head *lcl_head =
- &mie_lcl_hash[MDT_IDMAP_HASHFUNC(new->mie_lcl_id)];
- struct mdt_idmap_entry *e;
-
- e = idmap_search_entry(mie_rmt_hash, new->mie_rmt_id,
- mie_lcl_hash, new->mie_lcl_id,
- warn_msg);
- if (e == NULL) {
- list_add_tail(&new->mie_rmt_hash, rmt_head);
- list_add_tail(&new->mie_lcl_hash, lcl_head);
- }
- return e;
-}
-
-static int idmap_remove_entry(struct list_head *mie_rmt_hash,
- struct list_head *mie_lcl_hash,
- __u32 mie_rmt_id, __u32 mie_lcl_id)
-{
- struct mdt_idmap_entry *e;
- int rc = -ENOENT;
-
- e = idmap_lookup_entry(mie_rmt_hash, mie_rmt_id, mie_lcl_id);
- if (e != NULL) {
- e->mie_refcount--;
- if ((rc = e->mie_refcount) <= 0)
- idmap_entry_free(e);
- }
- return rc;
-}
-
-static int mdt_idmap_add(struct mdt_idmap_table *tbl,
- uid_t ruid, uid_t luid,
- gid_t rgid, gid_t lgid)
-{
- struct mdt_idmap_entry *ue0, *ue1, *ge0, *ge1;
- ENTRY;
-
- LASSERT(tbl);
-
- spin_lock(&tbl->mit_lock);
- ue0 = idmap_search_entry(tbl->mit_idmaps[RMT_UIDMAP_IDX], ruid,
- tbl->mit_idmaps[LCL_UIDMAP_IDX], luid,
- "UID mapping");
- spin_unlock(&tbl->mit_lock);
- if (!ue0) {
- ue0 = idmap_entry_alloc(ruid, luid);
- if (!ue0)
- RETURN(-ENOMEM);
-
- spin_lock(&tbl->mit_lock);
- ue1 = idmap_insert_entry(tbl->mit_idmaps[RMT_UIDMAP_IDX],
- tbl->mit_idmaps[LCL_UIDMAP_IDX],
- ue0, "UID mapping");
- if (ue1 != NULL) {
- idmap_entry_free(ue0);
- ue0 = ue1;
- }
- spin_unlock(&tbl->mit_lock);
-
- if (IS_ERR(ue1))
- RETURN(PTR_ERR(ue1));
- } else if (IS_ERR(ue0)) {
- RETURN(PTR_ERR(ue0));
- }
-
- spin_lock(&tbl->mit_lock);
- ge0 = idmap_search_entry(tbl->mit_idmaps[RMT_GIDMAP_IDX], rgid,
- tbl->mit_idmaps[LCL_GIDMAP_IDX], lgid,
- "GID mapping");
- spin_unlock(&tbl->mit_lock);
- if (!ge0) {
- ge0 = idmap_entry_alloc(rgid, lgid);
- spin_lock(&tbl->mit_lock);
- if (!ge0) {
- ue0->mie_refcount--;
- if (ue0->mie_refcount <= 0)
- idmap_entry_free(ue0);
- spin_unlock(&tbl->mit_lock);
- RETURN(-ENOMEM);
- }
-
- ge1 = idmap_insert_entry(tbl->mit_idmaps[RMT_GIDMAP_IDX],
- tbl->mit_idmaps[LCL_GIDMAP_IDX],
- ge0, "GID mapping");
- if (ge1 != NULL) {
- ue0->mie_refcount--;
- if (ue0->mie_refcount <= 0)
- idmap_entry_free(ue0);
- idmap_entry_free(ge0);
- }
- spin_unlock(&tbl->mit_lock);
-
- if (IS_ERR(ge1))
- RETURN(PTR_ERR(ge1));
- } else if (IS_ERR(ge0)) {
- spin_lock(&tbl->mit_lock);
- ue0->mie_refcount--;
- if (ue0->mie_refcount <= 0)
- idmap_entry_free(ue0);
- spin_unlock(&tbl->mit_lock);
- RETURN(PTR_ERR(ge0));
- }
-
- RETURN(0);
-}
-
-static int mdt_idmap_del(struct mdt_idmap_table *tbl,
- uid_t ruid, uid_t luid,
- gid_t rgid, gid_t lgid)
-{
- ENTRY;
-
- if (!tbl)
- RETURN(0);
-
- spin_lock(&tbl->mit_lock);
- idmap_remove_entry(tbl->mit_idmaps[RMT_UIDMAP_IDX],
- tbl->mit_idmaps[LCL_UIDMAP_IDX],
- ruid, luid);
- idmap_remove_entry(tbl->mit_idmaps[RMT_GIDMAP_IDX],
- tbl->mit_idmaps[LCL_GIDMAP_IDX],
- rgid, lgid);
- spin_unlock(&tbl->mit_lock);
-
- RETURN(0);
-}
-
-int mdt_handle_idmap(struct mdt_thread_info *info)
+int mdt_handle_idmap(struct tgt_session_info *tsi)
{
- struct ptlrpc_request *req = mdt_info_req(info);
- struct mdt_device *mdt = info->mti_mdt;
+ struct ptlrpc_request *req = tgt_ses_req(tsi);
+ struct mdt_device *mdt = mdt_exp2dev(req->rq_export);
struct mdt_export_data *med;
struct ptlrpc_user_desc *pud = req->rq_user_desc;
- struct mdt_identity *identity;
+ struct md_identity *identity;
__u32 opc;
int rc = 0;
-
ENTRY;
if (!req->rq_export)
RETURN(0);
med = mdt_req2med(req);
- if (!med->med_rmtclient)
+ if (!exp_connect_rmtclient(req->rq_export))
RETURN(0);
opc = lustre_msg_get_opc(req->rq_reqmsg);
(opc != SEC_CTX_FINI) && (opc != MDS_CONNECT))
RETURN(0);
- LASSERT(pud);
LASSERT(med->med_idmap);
- if (req->rq_auth_mapped_uid == INVALID_UID) {
- CERROR("invalid authorized mapped uid, please check "
+ if (unlikely(!pud)) {
+ CDEBUG(D_SEC, "remote client must run with rq_user_desc "
+ "present\n");
+ RETURN(-EACCES);
+ }
+
+ if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_mapped_uid))) {
+ CDEBUG(D_SEC, "invalid authorized mapped uid, please check "
"/etc/lustre/idmap.conf!\n");
RETURN(-EACCES);
}
if (is_identity_get_disabled(mdt->mdt_identity_cache)) {
- CERROR("remote client must run with identity_get enabled!\n");
+ CDEBUG(D_SEC, "remote client must run with identity_get "
+ "enabled!\n");
RETURN(-EACCES);
}
identity = mdt_identity_get(mdt->mdt_identity_cache,
req->rq_auth_mapped_uid);
- if (!identity) {
- CERROR("can't get mdt identity(%u), no mapping added\n",
+ if (IS_ERR(identity)) {
+ CDEBUG(D_SEC, "can't get mdt identity(%u), no mapping added\n",
req->rq_auth_mapped_uid);
RETURN(-EACCES);
}
switch (opc) {
- case SEC_CTX_INIT:
- case SEC_CTX_INIT_CONT:
- case MDS_CONNECT:
- rc = mdt_idmap_add(med->med_idmap,
- pud->pud_uid, identity->mi_uid,
- pud->pud_gid, identity->mi_gid);
- break;
- case SEC_CTX_FINI:
- rc = mdt_idmap_del(med->med_idmap,
- pud->pud_uid, identity->mi_uid,
- pud->pud_gid, identity->mi_gid);
- break;
+ case SEC_CTX_INIT:
+ case SEC_CTX_INIT_CONT:
+ case MDS_CONNECT:
+ rc = lustre_idmap_add(med->med_idmap,
+ pud->pud_uid, identity->mi_uid,
+ pud->pud_gid, identity->mi_gid);
+ break;
+ case SEC_CTX_FINI:
+ rc = lustre_idmap_del(med->med_idmap,
+ pud->pud_uid, identity->mi_uid,
+ pud->pud_gid, identity->mi_gid);
+ break;
}
mdt_identity_put(mdt->mdt_identity_cache, identity);
RETURN(rc);
switch (opc) {
- case SEC_CTX_INIT:
- case SEC_CTX_INIT_CONT:
- case SEC_CTX_FINI:
- mdt_revoke_export_locks(req->rq_export);
- break;
- }
- RETURN(0);
-}
-
-static __u32 idmap_lookup_id(struct list_head *hash, int reverse, __u32 id)
-{
- struct list_head *head = &hash[MDT_IDMAP_HASHFUNC(id)];
- struct mdt_idmap_entry *e;
-
- if (!reverse) {
- list_for_each_entry(e, head, mie_rmt_hash) {
- if (e->mie_rmt_id == id)
- return e->mie_lcl_id;
- }
- } else {
- list_for_each_entry(e, head, mie_lcl_hash) {
- if (e->mie_lcl_id == id)
- return e->mie_rmt_id;
- }
+ case SEC_CTX_INIT:
+ case SEC_CTX_INIT_CONT:
+ case SEC_CTX_FINI:
+ mdt_revoke_export_locks(req->rq_export);
+ break;
}
- return MDT_IDMAP_NOTFOUND;
-}
-
-static int mdt_idmap_lookup_uid(struct mdt_idmap_table *tbl, int reverse,
- uid_t uid)
-{
- struct list_head *hash;
-
- if (!tbl)
- return MDT_IDMAP_NOTFOUND;
-
- hash = tbl->mit_idmaps[reverse ? LCL_UIDMAP_IDX : RMT_UIDMAP_IDX];
-
- spin_lock(&tbl->mit_lock);
- uid = idmap_lookup_id(hash, reverse, uid);
- spin_unlock(&tbl->mit_lock);
-
- return uid;
-}
-
-static int mdt_idmap_lookup_gid(struct mdt_idmap_table *tbl, int reverse,
- gid_t gid)
-{
- struct list_head *hash;
-
- if (!tbl)
- return MDT_IDMAP_NOTFOUND;
-
- hash = tbl->mit_idmaps[reverse ? LCL_GIDMAP_IDX : RMT_GIDMAP_IDX];
- spin_lock(&tbl->mit_lock);
- gid = idmap_lookup_id(hash, reverse, gid);
- spin_unlock(&tbl->mit_lock);
-
- return gid;
+ RETURN(0);
}
int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *req,
struct ptlrpc_user_desc *pud)
{
- struct mdt_export_data *med = mdt_req2med(req);
- struct mdt_idmap_table *idmap = med->med_idmap;
+ struct mdt_export_data *med = mdt_req2med(req);
+ struct lustre_idmap_table *idmap = med->med_idmap;
uid_t uid, fsuid;
gid_t gid, fsgid;
/* Only remote client need desc_to_idmap. */
- if (!med->med_rmtclient)
+ if (!exp_connect_rmtclient(req->rq_export))
return 0;
- uid = mdt_idmap_lookup_uid(idmap, 0, pud->pud_uid);
- if (uid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for uid %u\n", pud->pud_uid);
+ uid = lustre_idmap_lookup_uid(NULL, idmap, 0, pud->pud_uid);
+ if (uid == CFS_IDMAP_NOTFOUND) {
+ CDEBUG(D_SEC, "no mapping for uid %u\n", pud->pud_uid);
return -EACCES;
}
if (pud->pud_uid == pud->pud_fsuid) {
fsuid = uid;
} else {
- fsuid = mdt_idmap_lookup_uid(idmap, 0, pud->pud_fsuid);
- if (fsuid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for fsuid %u\n", pud->pud_fsuid);
+ fsuid = lustre_idmap_lookup_uid(NULL, idmap, 0, pud->pud_fsuid);
+ if (fsuid == CFS_IDMAP_NOTFOUND) {
+ CDEBUG(D_SEC, "no mapping for fsuid %u\n",
+ pud->pud_fsuid);
return -EACCES;
}
}
- gid = mdt_idmap_lookup_gid(idmap, 0, pud->pud_gid);
- if (gid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for gid %u\n", pud->pud_gid);
+ gid = lustre_idmap_lookup_gid(NULL, idmap, 0, pud->pud_gid);
+ if (gid == CFS_IDMAP_NOTFOUND) {
+ CDEBUG(D_SEC, "no mapping for gid %u\n", pud->pud_gid);
return -EACCES;
}
if (pud->pud_gid == pud->pud_fsgid) {
fsgid = gid;
} else {
- fsgid = mdt_idmap_lookup_gid(idmap, 0, pud->pud_fsgid);
- if (fsgid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for fsgid %u\n", pud->pud_fsgid);
+ fsgid = lustre_idmap_lookup_gid(NULL, idmap, 0, pud->pud_fsgid);
+ if (fsgid == CFS_IDMAP_NOTFOUND) {
+ CDEBUG(D_SEC, "no mapping for fsgid %u\n",
+ pud->pud_fsgid);
return -EACCES;
}
}
}
/*
- * Reverse map
- * Do not ignore rootsquash.
+ * Reverse mapping
*/
void mdt_body_reverse_idmap(struct mdt_thread_info *info, struct mdt_body *body)
{
- struct ptlrpc_request *req = mdt_info_req(info);
- struct md_ucred *uc = mdt_ucred(info);
- struct mdt_export_data *med = mdt_req2med(req);
- struct mdt_idmap_table *idmap = med->med_idmap;
- uid_t uid;
- gid_t gid;
-
- if (!med->med_rmtclient)
- return;
-
- if (body->valid & OBD_MD_FLUID) {
- if (((uc->mu_valid == UCRED_OLD) ||
- (uc->mu_valid == UCRED_NEW)) &&
- !(uc->mu_squash & SQUASH_UID)) {
- if (body->uid == uc->mu_uid)
- uid = uc->mu_o_uid;
- else if (body->uid == uc->mu_fsuid)
- uid = uc->mu_o_fsuid;
- else
- uid = mdt_idmap_lookup_uid(idmap, 1, body->uid);
- } else {
- uid = mdt_idmap_lookup_uid(idmap, 1, body->uid);
- }
-
- if (uid == MDT_IDMAP_NOTFOUND) {
- uid = med->med_nllu;
- if (body->valid & OBD_MD_FLMODE)
- body->mode = (body->mode & ~S_IRWXU) |
- ((body->mode & S_IRWXO) << 6);
- }
+ struct ptlrpc_request *req = mdt_info_req(info);
+ struct lu_ucred *uc = mdt_ucred(info);
+ struct mdt_export_data *med = mdt_req2med(req);
+ struct lustre_idmap_table *idmap = med->med_idmap;
- body->uid = uid;
- }
-
- if (body->valid & OBD_MD_FLGID) {
- if (((uc->mu_valid == UCRED_OLD) ||
- (uc->mu_valid == UCRED_NEW)) &&
- !(uc->mu_squash & SQUASH_GID)) {
- if (body->gid == uc->mu_gid)
- gid = uc->mu_o_gid;
- else if (body->gid == uc->mu_fsgid)
- gid = uc->mu_o_fsgid;
- else
- gid = mdt_idmap_lookup_gid(idmap, 1, body->gid);
- } else {
- gid = mdt_idmap_lookup_gid(idmap, 1, body->gid);
- }
+ if (!exp_connect_rmtclient(info->mti_exp))
+ return;
- if (gid == MDT_IDMAP_NOTFOUND) {
- gid = med->med_nllg;
- if (body->valid & OBD_MD_FLMODE)
- body->mode = (body->mode & ~S_IRWXG) |
- ((body->mode & S_IRWXO) << 3);
- }
+ if (body->mbo_valid & OBD_MD_FLUID) {
+ uid_t uid;
- body->gid = gid;
- }
-}
+ uid = lustre_idmap_lookup_uid(uc, idmap, 1, body->mbo_uid);
-/* NB: return error if no mapping, so this will look strange:
- * if client hasn't kinit the to map xid for the mapped xid, client
- * will always get -EPERM, and the same for rootsquash case. */
-int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *req,
- struct mdt_remote_perm *perm)
-{
- struct mdt_export_data *med = mdt_req2med(req);
- uid_t uid, fsuid;
- gid_t gid, fsgid;
+ if (uid == CFS_IDMAP_NOTFOUND) {
+ uid = NOBODY_UID;
+ if (body->mbo_valid & OBD_MD_FLMODE)
+ body->mbo_mode = (body->mbo_mode & ~S_IRWXU) |
+ ((body->mbo_mode & S_IRWXO) << 6);
+ }
- LASSERT(med->med_rmtclient);
+ body->mbo_uid = uid;
+ }
- uid = mdt_idmap_lookup_uid(med->med_idmap, 1, perm->rp_uid);
- if (uid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for uid %u\n", perm->rp_uid);
- return -EPERM;
- }
+ if (body->mbo_valid & OBD_MD_FLGID) {
+ gid_t gid;
- gid = mdt_idmap_lookup_gid(med->med_idmap, 1, perm->rp_gid);
- if (gid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for gid %u\n", perm->rp_gid);
- return -EPERM;
- }
+ gid = lustre_idmap_lookup_gid(uc, idmap, 1, body->mbo_gid);
- if (perm->rp_uid != perm->rp_fsuid) {
- fsuid = mdt_idmap_lookup_uid(med->med_idmap, 1, perm->rp_fsuid);
- if (fsuid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for fsuid %u\n", perm->rp_fsuid);
- return -EPERM;
- }
- } else {
- fsuid = uid;
- }
+ if (gid == CFS_IDMAP_NOTFOUND) {
+ gid = NOBODY_GID;
+ if (body->mbo_valid & OBD_MD_FLMODE)
+ body->mbo_mode = (body->mbo_mode & ~S_IRWXG) |
+ ((body->mbo_mode & S_IRWXO) << 3);
+ }
- if (perm->rp_gid != perm->rp_fsgid) {
- fsgid = mdt_idmap_lookup_gid(med->med_idmap, 1, perm->rp_fsgid);
- if (fsgid == MDT_IDMAP_NOTFOUND) {
- CERROR("no mapping for fsgid %u\n", perm->rp_fsgid);
- return -EPERM;
- }
- } else {
- fsgid = gid;
+ body->mbo_gid = gid;
}
-
- perm->rp_uid = uid;
- perm->rp_gid = gid;
- perm->rp_fsuid = fsuid;
- perm->rp_fsgid = fsgid;
- return 0;
}
-/* Process remote client and rootsquash */
+/* Do not ignore root_squash for non-setattr case. */
int mdt_fix_attr_ucred(struct mdt_thread_info *info, __u32 op)
{
- struct ptlrpc_request *req = mdt_info_req(info);
- struct md_ucred *uc = mdt_ucred(info);
- struct lu_attr *attr = &info->mti_attr.ma_attr;
- struct mdt_export_data *med = mdt_req2med(req);
- struct mdt_idmap_table *idmap = med->med_idmap;
-
- ENTRY;
+ struct ptlrpc_request *req = mdt_info_req(info);
+ struct lu_ucred *uc = mdt_ucred_check(info);
+ struct lu_attr *attr = &info->mti_attr.ma_attr;
+ struct mdt_export_data *med = mdt_req2med(req);
+ struct lustre_idmap_table *idmap = med->med_idmap;
- if ((uc->mu_valid != UCRED_OLD) && (uc->mu_valid != UCRED_NEW))
- RETURN(-EINVAL);
-
- if (!med->med_rmtclient && (uc->mu_squash == SQUASH_NONE))
- RETURN(0);
+ if (uc == NULL)
+ return -EINVAL;
if (op != REINT_SETATTR) {
- if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
- attr->la_uid = uc->mu_fsuid;
- if (op != REINT_CREATE) {
- if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
- attr->la_gid = uc->mu_fsgid;
- } else {
- /* for S_ISGID, inherit gid from his parent */
- if (!(attr->la_mode & S_ISGID) && (attr->la_gid != -1))
- attr->la_gid = uc->mu_fsgid;
- }
- } else if (med->med_rmtclient) {
+ if ((attr->la_valid & LA_UID) && (attr->la_uid != -1))
+ attr->la_uid = uc->uc_fsuid;
+ /* for S_ISGID, inherit gid from his parent, such work will be
+ * done in cmm/mdd layer, here set all cases as uc->uc_fsgid. */
+ if ((attr->la_valid & LA_GID) && (attr->la_gid != -1))
+ attr->la_gid = uc->uc_fsgid;
+ } else if (exp_connect_rmtclient(info->mti_exp)) {
/* NB: -1 case will be handled by mdt_fix_attr() later. */
if ((attr->la_valid & LA_UID) && (attr->la_uid != -1)) {
- uid_t uid;
-
- if (attr->la_uid == uc->mu_o_uid)
- uid = uc->mu_uid;
- else if (attr->la_uid == uc->mu_o_fsuid)
- uid = uc->mu_fsuid;
- else
- uid = mdt_idmap_lookup_uid(idmap, 0,
- attr->la_uid);
-
- if (uid == MDT_IDMAP_NOTFOUND) {
- CWARN("Deny chown to uid %u\n", attr->la_uid);
- RETURN(-EPERM);
+ uid_t uid = lustre_idmap_lookup_uid(uc, idmap, 0,
+ attr->la_uid);
+
+ if (uid == CFS_IDMAP_NOTFOUND) {
+ CDEBUG(D_SEC, "Deny chown to uid %u\n",
+ attr->la_uid);
+ return -EPERM;
}
attr->la_uid = uid;
}
if ((attr->la_valid & LA_GID) && (attr->la_gid != -1)) {
- gid_t gid;
-
- if (attr->la_gid == uc->mu_o_gid)
- gid = uc->mu_gid;
- else if (attr->la_gid == uc->mu_o_fsgid)
- gid = uc->mu_fsgid;
- else
- gid = mdt_idmap_lookup_gid(idmap, 0,
- attr->la_gid);
-
- if (gid == MDT_IDMAP_NOTFOUND) {
- CWARN("Deny chown to gid %u\n", attr->la_gid);
- RETURN(-EPERM);
+ gid_t gid = lustre_idmap_lookup_gid(uc, idmap, 0,
+ attr->la_gid);
+
+ if (gid == CFS_IDMAP_NOTFOUND) {
+ CDEBUG(D_SEC, "Deny chown to gid %u\n",
+ attr->la_gid);
+ return -EPERM;
}
attr->la_gid = gid;
}
}
- RETURN(0);
+ return 0;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff