Whamcloud - gitweb
LU-12212 mdt: fix SECCTX reply buffer handling
[fs/lustre-release.git] / lustre / mdt / mdt_lib.c
index 07f3671..a7d5130 100644 (file)
@@ -23,7 +23,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2016, Intel Corporation.
+ * Copyright (c) 2011, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -49,7 +49,7 @@
 # include <linux/uidgid.h>
 #endif
 #include "mdt_internal.h"
-#include <lnet/nidstr.h>
+#include <uapi/linux/lnet/nidstr.h>
 #include <lustre_nodemap.h>
 
 typedef enum ucred_init_type {
@@ -141,33 +141,92 @@ static void ucred_set_jobid(struct mdt_thread_info *info, struct lu_ucred *uc)
                uc->uc_jobid[0] = '\0';
 }
 
+static void ucred_set_nid(struct mdt_thread_info *info, struct lu_ucred *uc)
+{
+       if (info && info->mti_exp && info->mti_exp->exp_connection)
+               uc->uc_nid = info->mti_exp->exp_connection->c_peer.nid;
+       else
+               uc->uc_nid = LNET_NID_ANY;
+}
+
+static void ucred_set_audit_enabled(struct mdt_thread_info *info,
+                                   struct lu_ucred *uc)
+{
+       struct lu_nodemap *nodemap = NULL;
+       bool audit = true;
+
+       if (info && info->mti_exp) {
+               nodemap = nodemap_get_from_exp(info->mti_exp);
+               if (nodemap && !IS_ERR(nodemap)) {
+                       audit = nodemap->nmf_enable_audit;
+                       nodemap_putref(nodemap);
+               }
+       }
+
+       uc->uc_enable_audit = audit;
+}
+
 static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
                          void *buf, bool drop_fs_cap)
 {
-        struct ptlrpc_request   *req = mdt_info_req(info);
-        struct mdt_device       *mdt = info->mti_mdt;
-        struct ptlrpc_user_desc *pud = req->rq_user_desc;
-       struct lu_ucred         *ucred = mdt_ucred(info);
-        lnet_nid_t               peernid = req->rq_peer.nid;
-        __u32                    perm = 0;
-        int                      setuid;
-        int                      setgid;
-        int                      rc = 0;
+       struct ptlrpc_request *req = mdt_info_req(info);
+       struct mdt_device *mdt = info->mti_mdt;
+       struct ptlrpc_user_desc *pud = req->rq_user_desc;
+       struct lu_ucred *ucred = mdt_ucred(info);
+       struct lu_nodemap *nodemap;
+       lnet_nid_t peernid = req->rq_peer.nid;
+       __u32 perm = 0;
+       int setuid;
+       int setgid;
+       bool is_nm_gid_squashed = false;
+       int rc = 0;
 
-        ENTRY;
+       ENTRY;
 
-        LASSERT(req->rq_auth_gss);
-        LASSERT(!req->rq_auth_usr_mdt);
-        LASSERT(req->rq_user_desc);
+       LASSERT(req->rq_auth_gss);
+       LASSERT(!req->rq_auth_usr_mdt);
+       LASSERT(req->rq_user_desc);
        LASSERT(ucred != NULL);
 
        ucred->uc_valid = UCRED_INVALID;
 
-       ucred->uc_o_uid   = pud->pud_uid;
-       ucred->uc_o_gid   = pud->pud_gid;
+       nodemap = nodemap_get_from_exp(info->mti_exp);
+       if (IS_ERR(nodemap))
+               RETURN(PTR_ERR(nodemap));
+
+       pud->pud_uid = nodemap_map_id(nodemap, NODEMAP_UID,
+                                      NODEMAP_CLIENT_TO_FS, pud->pud_uid);
+       pud->pud_gid = nodemap_map_id(nodemap, NODEMAP_GID,
+                                      NODEMAP_CLIENT_TO_FS, pud->pud_gid);
+       pud->pud_fsuid = nodemap_map_id(nodemap, NODEMAP_UID,
+                                      NODEMAP_CLIENT_TO_FS, pud->pud_fsuid);
+       pud->pud_fsgid = nodemap_map_id(nodemap, NODEMAP_GID,
+                                      NODEMAP_CLIENT_TO_FS, pud->pud_fsgid);
+
+       ucred->uc_o_uid = pud->pud_uid;
+       ucred->uc_o_gid = pud->pud_gid;
        ucred->uc_o_fsuid = pud->pud_fsuid;
        ucred->uc_o_fsgid = pud->pud_fsgid;
 
+       if (nodemap && ucred->uc_o_uid == nodemap->nm_squash_uid) {
+               /* deny access before we get identity ref */
+               if (nodemap->nmf_deny_unknown) {
+                       nodemap_putref(nodemap);
+                       RETURN(-EACCES);
+               }
+
+               ucred->uc_fsuid = nodemap->nm_squash_uid;
+               ucred->uc_fsgid = nodemap->nm_squash_gid;
+               ucred->uc_cap = 0;
+               ucred->uc_suppgids[0] = -1;
+               ucred->uc_suppgids[1] = -1;
+       }
+
+       if (nodemap && ucred->uc_o_gid == nodemap->nm_squash_gid)
+               is_nm_gid_squashed = true;
+
+       nodemap_putref(nodemap);
+
        if (type == BODY_INIT) {
                struct mdt_body *body = (struct mdt_body *)buf;
 
@@ -217,24 +276,25 @@ static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
                  (ucred->uc_identity &&
                   (pud->pud_gid != ucred->uc_identity->mi_gid)));
 
-        /* check permission of setuid */
-        if (setuid && !(perm & CFS_SETUID_PERM)) {
-                CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
-                       pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
-                GOTO(out, rc = -EACCES);
-        }
+       /* check permission of setuid */
+       if (setuid && !(perm & CFS_SETUID_PERM)) {
+               CDEBUG(D_SEC, "mdt blocked setuid attempt (%u -> %u) from %s\n",
+                      pud->pud_uid, pud->pud_fsuid, libcfs_nid2str(peernid));
+               GOTO(out, rc = -EACCES);
+       }
 
-        /* check permission of setgid */
-        if (setgid && !(perm & CFS_SETGID_PERM)) {
+       /* check permission of setgid */
+       if (setgid && !(perm & CFS_SETGID_PERM)) {
                CDEBUG(D_SEC, "mdt blocked setgid attempt (%u:%u/%u:%u -> %u) "
                       "from %s\n", pud->pud_uid, pud->pud_gid,
                       pud->pud_fsuid, pud->pud_fsgid,
                       ucred->uc_identity->mi_gid, libcfs_nid2str(peernid));
                GOTO(out, rc = -EACCES);
-        }
+       }
 
        if (perm & CFS_SETGRP_PERM) {
-               if (pud->pud_ngroups) {
+               /* only set groups if GID is not squashed */
+               if (pud->pud_ngroups && !is_nm_gid_squashed) {
                        /* setgroups for local client */
                        ucred->uc_ginfo = groups_alloc(pud->pud_ngroups);
                        if (!ucred->uc_ginfo) {
@@ -247,6 +307,8 @@ static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
                                                pud->pud_groups);
                        lustre_groups_sort(ucred->uc_ginfo);
                } else {
+                       ucred->uc_suppgids[0] = -1;
+                       ucred->uc_suppgids[1] = -1;
                        ucred->uc_ginfo = NULL;
                }
        } else {
@@ -255,8 +317,8 @@ static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
                ucred->uc_ginfo = NULL;
        }
 
-       ucred->uc_uid   = pud->pud_uid;
-       ucred->uc_gid   = pud->pud_gid;
+       ucred->uc_uid = pud->pud_uid;
+       ucred->uc_gid = pud->pud_gid;
        ucred->uc_fsuid = pud->pud_fsuid;
        ucred->uc_fsgid = pud->pud_fsgid;
 
@@ -270,6 +332,8 @@ static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type,
                ucred->uc_cap = pud->pud_cap;
        ucred->uc_valid = UCRED_NEW;
        ucred_set_jobid(info, ucred);
+       ucred_set_nid(info, ucred);
+       ucred_set_audit_enabled(info, ucred);
 
        EXIT;
 
@@ -442,6 +506,8 @@ static int old_init_ucred_common(struct mdt_thread_info *info,
                uc->uc_cap &= ~CFS_CAP_FS_MASK;
        uc->uc_valid = UCRED_OLD;
        ucred_set_jobid(info, uc);
+       ucred_set_nid(info, uc);
+       ucred_set_audit_enabled(info, uc);
 
        EXIT;
 
@@ -576,18 +642,23 @@ int mdt_init_ucred_reint(struct mdt_thread_info *info)
 /* copied from lov/lov_ea.c, just for debugging, will be removed later */
 void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid)
 {
-       const struct lov_ost_data_v1    *lod;
-       int                              i;
-       __u16                            count;
+       const struct lov_ost_data_v1 *lod;
+       __u32 lmm_magic = le32_to_cpu(lmm->lmm_magic);
+       __u16 count;
+       int i;
 
        if (likely(!cfs_cdebug_show(level, DEBUG_SUBSYSTEM)))
                return;
 
-       count = le16_to_cpu(((struct lov_user_md *)lmm)->lmm_stripe_count);
-
        CDEBUG(level, "objid "DOSTID", magic 0x%08X, pattern %#X\n",
-              POSTID(&lmm->lmm_oi), le32_to_cpu(lmm->lmm_magic),
+              POSTID(&lmm->lmm_oi), lmm_magic,
               le32_to_cpu(lmm->lmm_pattern));
+
+       /* No support for compount layouts yet */
+       if (lmm_magic != LOV_MAGIC_V1 && lmm_magic != LOV_MAGIC_V3)
+               return;
+
+       count = le16_to_cpu(((struct lov_user_md *)lmm)->lmm_stripe_count);
        CDEBUG(level, "stripe_size=0x%x, stripe_count=0x%x\n",
               le32_to_cpu(lmm->lmm_stripe_size), count);
 
@@ -610,11 +681,25 @@ void mdt_dump_lmm(int level, const struct lov_mds_md *lmm, __u64 valid)
 void mdt_dump_lmv(unsigned int level, const union lmv_mds_md *lmv)
 {
        const struct lmv_mds_md_v1 *lmm1;
+       const struct lmv_foreign_md *lfm;
        int                        i;
 
        if (likely(!cfs_cdebug_show(level, DEBUG_SUBSYSTEM)))
                return;
 
+       /* foreign LMV case */
+       lfm = &lmv->lmv_foreign_md;
+       if (le32_to_cpu(lfm->lfm_magic) == LMV_MAGIC_FOREIGN) {
+               CDEBUG_LIMIT(level,
+                            "foreign magic 0x%08X, length %u, type %u, flags %u, value '%.*s'\n",
+                            le32_to_cpu(lfm->lfm_magic),
+                            le32_to_cpu(lfm->lfm_length),
+                            le32_to_cpu(lfm->lfm_type),
+                            le32_to_cpu(lfm->lfm_flags),
+                            le32_to_cpu(lfm->lfm_length), lfm->lfm_value);
+               return;
+       }
+
        lmm1 = &lmv->lmv_md_v1;
        CDEBUG(level,
               "magic 0x%08X, master %#X stripe_count %#x hash_type %#x\n",
@@ -705,20 +790,18 @@ int mdt_fix_reply(struct mdt_thread_info *info)
                req_capsule_shrink(pill, &RMF_LOGCOOKIES, acl_size, RCL_SERVER);
        }
 
-       if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
-           !(body->mbo_valid & OBD_MD_FLMDSCAPA))
-               req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
-
-       if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
-           !(body->mbo_valid & OBD_MD_FLOSSCAPA))
-               req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
+       /* Shrink optional SECCTX buffer if it is not used */
+       if (req_capsule_has_field(pill, &RMF_FILE_SECCTX, RCL_SERVER) &&
+           req_capsule_get_size(pill, &RMF_FILE_SECCTX, RCL_SERVER) != 0 &&
+           !(body->mbo_valid & OBD_MD_SECCTX))
+               req_capsule_shrink(pill, &RMF_FILE_SECCTX, 0, RCL_SERVER);
 
-        /*
-         * Some more field should be shrinked if needed.
-         * This should be done by those who added fields to reply message.
-         */
+       /*
+        * Some more field should be shrinked if needed.
+        * This should be done by those who added fields to reply message.
+        */
 
-        /* Grow MD buffer if needed finally */
+       /* Grow MD buffer if needed finally */
        if (info->mti_big_lmm_used) {
                 void *lmm;
 
@@ -796,7 +879,6 @@ int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
                .hai_cookie = 0,
                .hai_gid = 0,
        };
-       __u64 compound_id;
        int archive_id;
 
         ENTRY;
@@ -866,7 +948,6 @@ int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
         * file is unlinked, file is archived, so create remove request
         * for copytool!
         * If CDT is not running, requests will be logged for later. */
-       compound_id = atomic_inc_return(&cdt->cdt_compound_id);
        if (ma->ma_hsm.mh_arch_id != 0)
                archive_id = ma->ma_hsm.mh_arch_id;
        else
@@ -874,8 +955,8 @@ int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo,
 
        hai.hai_fid = *mdt_object_fid(mo);
 
-       rc = mdt_agent_record_add(info->mti_env, info->mti_mdt,
-                                 compound_id, archive_id, 0, &hai);
+       rc = mdt_agent_record_add(info->mti_env, info->mti_mdt, archive_id, 0,
+                                 &hai);
        if (rc)
                CERROR("%s: unable to add HSM remove request for "DFID
                       ": rc=%d\n", mdt_obd_name(info->mti_mdt),
@@ -914,10 +995,14 @@ static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
                out |= LA_KILL_SGID;
        if (in & MDS_ATTR_PROJID)
                out |= LA_PROJID;
+       if (in & MDS_ATTR_LSIZE)
+               out |= LA_LSIZE;
+       if (in & MDS_ATTR_LBLOCKS)
+               out |= LA_LBLOCKS;
 
        if (in & MDS_ATTR_FROM_OPEN)
                rr->rr_flags |= MRF_OPEN_TRUNC;
-       if (in & MDS_OPEN_OWNEROVERRIDE)
+       if (in & MDS_ATTR_OVERRIDE)
                ma->ma_attr_flags |= MDS_OWNEROVERRIDE;
        if (in & MDS_ATTR_FORCE)
                ma->ma_attr_flags |= MDS_PERM_BYPASS;
@@ -927,9 +1012,10 @@ static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr,
                MDS_ATTR_ATIME_SET | MDS_ATTR_CTIME_SET | MDS_ATTR_MTIME_SET |
                MDS_ATTR_SIZE | MDS_ATTR_BLOCKS | MDS_ATTR_ATTR_FLAG |
                MDS_ATTR_FORCE | MDS_ATTR_KILL_SUID | MDS_ATTR_KILL_SGID |
-               MDS_ATTR_FROM_OPEN | MDS_OPEN_OWNEROVERRIDE);
+               MDS_ATTR_FROM_OPEN | MDS_ATTR_LSIZE | MDS_ATTR_LBLOCKS |
+               MDS_ATTR_OVERRIDE);
        if (in != 0)
-               CERROR("Unknown attr bits: %#llx\n", in);
+               CDEBUG(D_INFO, "Unknown attr bits: %#llx\n", in);
        return out;
 }
 
@@ -999,19 +1085,20 @@ static int mdt_file_secctx_unpack(struct req_capsule *pill,
 
 static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
 {
-       struct lu_ucred         *uc = mdt_ucred(info);
-       struct md_attr          *ma = &info->mti_attr;
-       struct lu_attr          *la = &ma->ma_attr;
-       struct req_capsule      *pill = info->mti_pill;
-       struct mdt_reint_record *rr = &info->mti_rr;
-       struct mdt_rec_setattr  *rec;
-       struct lu_nodemap       *nodemap;
-        ENTRY;
+       struct lu_ucred *uc = mdt_ucred(info);
+       struct md_attr *ma = &info->mti_attr;
+       struct lu_attr *la = &ma->ma_attr;
+       struct req_capsule *pill = info->mti_pill;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct mdt_rec_setattr *rec;
+       struct lu_nodemap *nodemap;
 
-        CLASSERT(sizeof(struct mdt_rec_setattr)== sizeof(struct mdt_rec_reint));
-        rec = req_capsule_client_get(pill, &RMF_REC_REINT);
-        if (rec == NULL)
-                RETURN(-EFAULT);
+       ENTRY;
+
+       CLASSERT(sizeof(*rec) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
 
        /* This prior initialization is needed for old_init_ucred_reint() */
        uc->uc_fsuid = rec->sa_fsuid;
@@ -1043,21 +1130,8 @@ static int mdt_setattr_unpack_rec(struct mdt_thread_info *info)
        la->la_mtime = rec->sa_mtime;
        ma->ma_valid = MA_INODE;
 
-       if (rec->sa_bias & MDS_DATA_MODIFIED)
-               ma->ma_attr_flags |= MDS_DATA_MODIFIED;
-       else
-               ma->ma_attr_flags &= ~MDS_DATA_MODIFIED;
-
-       if (rec->sa_bias & MDS_HSM_RELEASE)
-               ma->ma_attr_flags |= MDS_HSM_RELEASE;
-       else
-               ma->ma_attr_flags &= ~MDS_HSM_RELEASE;
-
-       if (rec->sa_bias & MDS_CLOSE_LAYOUT_SWAP)
-               ma->ma_attr_flags |= MDS_CLOSE_LAYOUT_SWAP;
-       else
-               ma->ma_attr_flags &= ~MDS_CLOSE_LAYOUT_SWAP;
-
+       ma->ma_attr_flags |= rec->sa_bias & (MDS_CLOSE_INTENT |
+                               MDS_DATA_MODIFIED | MDS_TRUNC_KEEP_LEASE);
        RETURN(0);
 }
 
@@ -1075,7 +1149,7 @@ static int mdt_close_handle_unpack(struct mdt_thread_info *info)
        if (ioepoch == NULL)
                RETURN(-EPROTO);
 
-       info->mti_close_handle = ioepoch->mio_handle;
+       info->mti_open_handle = ioepoch->mio_open_handle;
 
        RETURN(0);
 }
@@ -1108,6 +1182,7 @@ static int mdt_setattr_unpack(struct mdt_thread_info *info)
                 rr->rr_eadata = req_capsule_client_get(pill, &RMF_EADATA);
                 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
                                                         RCL_CLIENT);
+
                if (rr->rr_eadatalen > 0) {
                        const struct lmv_user_md        *lum;
 
@@ -1130,16 +1205,16 @@ static int mdt_setattr_unpack(struct mdt_thread_info *info)
        RETURN(rc);
 }
 
-static int mdt_intent_close_unpack(struct mdt_thread_info *info)
+static int mdt_close_intent_unpack(struct mdt_thread_info *info)
 {
        struct md_attr          *ma = &info->mti_attr;
        struct req_capsule      *pill = info->mti_pill;
        ENTRY;
 
-       if (!(ma->ma_attr_flags & (MDS_HSM_RELEASE | MDS_CLOSE_LAYOUT_SWAP)))
+       if (!(ma->ma_attr_flags & MDS_CLOSE_INTENT))
                RETURN(0);
 
-       req_capsule_extend(pill, &RQF_MDS_INTENT_CLOSE);
+       req_capsule_extend(pill, &RQF_MDS_CLOSE_INTENT);
 
        if (!(req_capsule_has_field(pill, &RMF_CLOSE_DATA, RCL_CLIENT) &&
            req_capsule_field_present(pill, &RMF_CLOSE_DATA, RCL_CLIENT)))
@@ -1161,7 +1236,7 @@ int mdt_close_unpack(struct mdt_thread_info *info)
        if (rc)
                RETURN(rc);
 
-       rc = mdt_intent_close_unpack(info);
+       rc = mdt_close_intent_unpack(info);
        if (rc)
                RETURN(rc);
 
@@ -1170,19 +1245,20 @@ int mdt_close_unpack(struct mdt_thread_info *info)
 
 static int mdt_create_unpack(struct mdt_thread_info *info)
 {
-       struct lu_ucred         *uc  = mdt_ucred(info);
-        struct mdt_rec_create   *rec;
-        struct lu_attr          *attr = &info->mti_attr.ma_attr;
-        struct mdt_reint_record *rr = &info->mti_rr;
-        struct req_capsule      *pill = info->mti_pill;
-        struct md_op_spec       *sp = &info->mti_spec;
-        int rc;
-        ENTRY;
+       struct lu_ucred *uc  = mdt_ucred(info);
+       struct mdt_rec_create *rec;
+       struct lu_attr *attr = &info->mti_attr.ma_attr;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct req_capsule      *pill = info->mti_pill;
+       struct md_op_spec       *sp = &info->mti_spec;
+       int rc;
 
-        CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
-        rec = req_capsule_client_get(pill, &RMF_REC_REINT);
-        if (rec == NULL)
-                RETURN(-EFAULT);
+       ENTRY;
+
+       CLASSERT(sizeof(*rec) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
 
        /* This prior initialization is needed for old_init_ucred_reint() */
        uc->uc_fsuid = rec->cr_fsuid;
@@ -1239,24 +1315,29 @@ static int mdt_create_unpack(struct mdt_thread_info *info)
        if (rc < 0)
                RETURN(rc);
 
+       rc = req_check_sepol(pill);
+       if (rc)
+               RETURN(rc);
+
        rc = mdt_dlmreq_unpack(info);
        RETURN(rc);
 }
 
 static int mdt_link_unpack(struct mdt_thread_info *info)
 {
-       struct lu_ucred         *uc  = mdt_ucred(info);
-        struct mdt_rec_link     *rec;
-        struct lu_attr          *attr = &info->mti_attr.ma_attr;
-        struct mdt_reint_record *rr = &info->mti_rr;
-        struct req_capsule      *pill = info->mti_pill;
-        int rc;
-        ENTRY;
+       struct lu_ucred *uc  = mdt_ucred(info);
+       struct mdt_rec_link *rec;
+       struct lu_attr *attr = &info->mti_attr.ma_attr;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct req_capsule *pill = info->mti_pill;
+       int rc;
 
-        CLASSERT(sizeof(struct mdt_rec_link) == sizeof(struct mdt_rec_reint));
-        rec = req_capsule_client_get(pill, &RMF_REC_REINT);
-        if (rec == NULL)
-                RETURN(-EFAULT);
+       ENTRY;
+
+       CLASSERT(sizeof(*rec) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
 
        /* This prior initialization is needed for old_init_ucred_reint() */
        uc->uc_fsuid = rec->lk_fsuid;
@@ -1277,6 +1358,10 @@ static int mdt_link_unpack(struct mdt_thread_info *info)
        if (rc < 0)
                RETURN(rc);
 
+       rc = req_check_sepol(pill);
+       if (rc)
+               RETURN(rc);
+
        rc = mdt_dlmreq_unpack(info);
 
        RETURN(rc);
@@ -1284,19 +1369,19 @@ static int mdt_link_unpack(struct mdt_thread_info *info)
 
 static int mdt_unlink_unpack(struct mdt_thread_info *info)
 {
-       struct lu_ucred         *uc  = mdt_ucred(info);
-        struct mdt_rec_unlink   *rec;
-        struct md_attr          *ma = &info->mti_attr;
-        struct lu_attr          *attr = &info->mti_attr.ma_attr;
-        struct mdt_reint_record *rr = &info->mti_rr;
-        struct req_capsule      *pill = info->mti_pill;
-        int rc;
-        ENTRY;
+       struct lu_ucred *uc  = mdt_ucred(info);
+       struct mdt_rec_unlink *rec;
+       struct lu_attr *attr = &info->mti_attr.ma_attr;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct req_capsule      *pill = info->mti_pill;
+       int rc;
 
-        CLASSERT(sizeof(struct mdt_rec_unlink) == sizeof(struct mdt_rec_reint));
-        rec = req_capsule_client_get(pill, &RMF_REC_REINT);
-        if (rec == NULL)
-                RETURN(-EFAULT);
+       ENTRY;
+
+       CLASSERT(sizeof(*rec) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
 
        /* This prior initialization is needed for old_init_ucred_reint() */
        uc->uc_fsuid = rec->ul_fsuid;
@@ -1305,28 +1390,27 @@ static int mdt_unlink_unpack(struct mdt_thread_info *info)
        uc->uc_suppgids[0] = rec->ul_suppgid1;
        uc->uc_suppgids[1] = -1;
 
-        attr->la_uid = rec->ul_fsuid;
-        attr->la_gid = rec->ul_fsgid;
-        rr->rr_fid1 = &rec->ul_fid1;
-        rr->rr_fid2 = &rec->ul_fid2;
-        attr->la_ctime = rec->ul_time;
-        attr->la_mtime = rec->ul_time;
-        attr->la_mode  = rec->ul_mode;
-        attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
+       attr->la_uid = rec->ul_fsuid;
+       attr->la_gid = rec->ul_fsgid;
+       rr->rr_fid1 = &rec->ul_fid1;
+       rr->rr_fid2 = &rec->ul_fid2;
+       attr->la_ctime = rec->ul_time;
+       attr->la_mtime = rec->ul_time;
+       attr->la_mode  = rec->ul_mode;
+       attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
 
        rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
        if (rc < 0)
                RETURN(rc);
 
-        if (rec->ul_bias & MDS_VTX_BYPASS)
-                ma->ma_attr_flags |= MDS_VTX_BYPASS;
-        else
-                ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
-
        info->mti_spec.no_create = !!req_is_replay(mdt_info_req(info));
 
-        rc = mdt_dlmreq_unpack(info);
-        RETURN(rc);
+       rc = req_check_sepol(pill);
+       if (rc)
+               RETURN(rc);
+
+       rc = mdt_dlmreq_unpack(info);
+       RETURN(rc);
 }
 
 static int mdt_rmentry_unpack(struct mdt_thread_info *info)
@@ -1337,19 +1421,20 @@ static int mdt_rmentry_unpack(struct mdt_thread_info *info)
 
 static int mdt_rename_unpack(struct mdt_thread_info *info)
 {
-       struct lu_ucred         *uc = mdt_ucred(info);
-        struct mdt_rec_rename   *rec;
-        struct md_attr          *ma = &info->mti_attr;
-        struct lu_attr          *attr = &info->mti_attr.ma_attr;
-        struct mdt_reint_record *rr = &info->mti_rr;
-        struct req_capsule      *pill = info->mti_pill;
-        int rc;
-        ENTRY;
+       struct lu_ucred *uc = mdt_ucred(info);
+       struct mdt_rec_rename *rec;
+       struct lu_attr *attr = &info->mti_attr.ma_attr;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct req_capsule *pill = info->mti_pill;
+       struct md_op_spec *spec = &info->mti_spec;
+       int rc;
 
-        CLASSERT(sizeof(struct mdt_rec_rename) == sizeof(struct mdt_rec_reint));
-        rec = req_capsule_client_get(pill, &RMF_REC_REINT);
-        if (rec == NULL)
-                RETURN(-EFAULT);
+       ENTRY;
+
+       CLASSERT(sizeof(*rec) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
 
        /* This prior initialization is needed for old_init_ucred_reint() */
        uc->uc_fsuid = rec->rn_fsuid;
@@ -1358,15 +1443,15 @@ static int mdt_rename_unpack(struct mdt_thread_info *info)
        uc->uc_suppgids[0] = rec->rn_suppgid1;
        uc->uc_suppgids[1] = rec->rn_suppgid2;
 
-        attr->la_uid = rec->rn_fsuid;
-        attr->la_gid = rec->rn_fsgid;
-        rr->rr_fid1 = &rec->rn_fid1;
-        rr->rr_fid2 = &rec->rn_fid2;
-        attr->la_ctime = rec->rn_time;
-        attr->la_mtime = rec->rn_time;
-        /* rename_tgt contains the mode already */
-        attr->la_mode = rec->rn_mode;
-        attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
+       attr->la_uid = rec->rn_fsuid;
+       attr->la_gid = rec->rn_fsgid;
+       rr->rr_fid1 = &rec->rn_fid1;
+       rr->rr_fid2 = &rec->rn_fid2;
+       attr->la_ctime = rec->rn_time;
+       attr->la_mtime = rec->rn_time;
+       /* rename_tgt contains the mode already */
+       attr->la_mode = rec->rn_mode;
+       attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
 
        rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
        if (rc < 0)
@@ -1376,21 +1461,84 @@ static int mdt_rename_unpack(struct mdt_thread_info *info)
        if (rc < 0)
                RETURN(rc);
 
-        if (rec->rn_bias & MDS_VTX_BYPASS)
-                ma->ma_attr_flags |= MDS_VTX_BYPASS;
-        else
-                ma->ma_attr_flags &= ~MDS_VTX_BYPASS;
+       spec->no_create = !!req_is_replay(mdt_info_req(info));
+
+       rc = req_check_sepol(pill);
+       if (rc)
+               RETURN(rc);
+
+       rc = mdt_dlmreq_unpack(info);
 
-       if (rec->rn_bias & MDS_RENAME_MIGRATE) {
-               req_capsule_extend(info->mti_pill, &RQF_MDS_REINT_MIGRATE);
+       RETURN(rc);
+}
+
+static int mdt_migrate_unpack(struct mdt_thread_info *info)
+{
+       struct lu_ucred *uc = mdt_ucred(info);
+       struct mdt_rec_rename *rec;
+       struct lu_attr *attr = &info->mti_attr.ma_attr;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct req_capsule *pill = info->mti_pill;
+       struct md_op_spec *spec = &info->mti_spec;
+       int rc;
+
+       ENTRY;
+
+       CLASSERT(sizeof(*rec) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
+
+       /* This prior initialization is needed for old_init_ucred_reint() */
+       uc->uc_fsuid = rec->rn_fsuid;
+       uc->uc_fsgid = rec->rn_fsgid;
+       uc->uc_cap   = rec->rn_cap;
+       uc->uc_suppgids[0] = rec->rn_suppgid1;
+       uc->uc_suppgids[1] = rec->rn_suppgid2;
+
+       attr->la_uid = rec->rn_fsuid;
+       attr->la_gid = rec->rn_fsgid;
+       rr->rr_fid1 = &rec->rn_fid1;
+       rr->rr_fid2 = &rec->rn_fid2;
+       attr->la_ctime = rec->rn_time;
+       attr->la_mtime = rec->rn_time;
+       /* rename_tgt contains the mode already */
+       attr->la_mode = rec->rn_mode;
+       attr->la_valid = LA_UID | LA_GID | LA_CTIME | LA_MTIME | LA_MODE;
+
+       rc = mdt_name_unpack(pill, &RMF_NAME, &rr->rr_name, 0);
+       if (rc < 0)
+               RETURN(rc);
+
+       if (rec->rn_bias & MDS_CLOSE_MIGRATE) {
                rc = mdt_close_handle_unpack(info);
-               if (rc < 0)
+               if (rc)
                        RETURN(rc);
-               info->mti_spec.sp_migrate_close = 1;
+
+               spec->sp_migrate_close = 1;
        }
 
-        info->mti_spec.no_create = !!req_is_replay(mdt_info_req(info));
+       /* lustre version > 2.11 migration packs lum */
+       if (req_capsule_has_field(pill, &RMF_EADATA, RCL_CLIENT)) {
+               if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
+                       rr->rr_eadatalen = req_capsule_get_size(pill,
+                                                               &RMF_EADATA,
+                                                               RCL_CLIENT);
+
+                       if (rr->rr_eadatalen > 0) {
+                               rr->rr_eadata = req_capsule_client_get(pill,
+                                                               &RMF_EADATA);
+                               spec->u.sp_ea.eadatalen = rr->rr_eadatalen;
+                               spec->u.sp_ea.eadata = rr->rr_eadata;
+                               spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
+                       }
+               } else {
+                       /* old client doesn't provide lum. */
+                       RETURN(-EOPNOTSUPP);
+               }
+       }
 
+       spec->no_create = !!req_is_replay(mdt_info_req(info));
 
        rc = mdt_dlmreq_unpack(info);
 
@@ -1398,7 +1546,7 @@ static int mdt_rename_unpack(struct mdt_thread_info *info)
 }
 
 /*
- * please see comment above LOV_MAGIC_V1_DEF
+ * please see comment above LOV_MAGIC_V1_DEFINED
  */
 void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata)
 {
@@ -1408,29 +1556,29 @@ void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata)
 
        if (unlikely(req_is_replay(mdt_info_req(info)))) {
                if ((v1->lmm_magic & LOV_MAGIC_MASK) == LOV_MAGIC_MAGIC)
-                       v1->lmm_magic |= LOV_MAGIC_DEF;
+                       v1->lmm_magic |= LOV_MAGIC_DEFINED;
                else if ((v1->lmm_magic & __swab32(LOV_MAGIC_MAGIC)) ==
                         __swab32(LOV_MAGIC_MAGIC))
-                       v1->lmm_magic |= __swab32(LOV_MAGIC_DEF);
+                       v1->lmm_magic |= __swab32(LOV_MAGIC_DEFINED);
        }
 }
 
 static int mdt_open_unpack(struct mdt_thread_info *info)
 {
-       struct lu_ucred         *uc = mdt_ucred(info);
-        struct mdt_rec_create   *rec;
-        struct lu_attr          *attr = &info->mti_attr.ma_attr;
-        struct req_capsule      *pill = info->mti_pill;
-        struct mdt_reint_record *rr   = &info->mti_rr;
-        struct ptlrpc_request   *req  = mdt_info_req(info);
-        struct md_op_spec       *sp   = &info->mti_spec;
+       struct lu_ucred *uc = mdt_ucred(info);
+       struct mdt_rec_create *rec;
+       struct lu_attr *attr = &info->mti_attr.ma_attr;
+       struct req_capsule *pill = info->mti_pill;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct ptlrpc_request *req = mdt_info_req(info);
+       struct md_op_spec *sp = &info->mti_spec;
        int rc;
-        ENTRY;
+       ENTRY;
 
-        CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
-        rec = req_capsule_client_get(pill, &RMF_REC_REINT);
-        if (rec == NULL)
-                RETURN(-EFAULT);
+       CLASSERT(sizeof(struct mdt_rec_create) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
 
        /* This prior initialization is needed for old_init_ucred_reint() */
        uc->uc_fsuid = rec->cr_fsuid;
@@ -1440,18 +1588,18 @@ static int mdt_open_unpack(struct mdt_thread_info *info)
        uc->uc_suppgids[1] = rec->cr_suppgid2;
        uc->uc_umask = rec->cr_umask;
 
-        rr->rr_fid1   = &rec->cr_fid1;
-        rr->rr_fid2   = &rec->cr_fid2;
-        rr->rr_handle = &rec->cr_old_handle;
-        attr->la_mode = rec->cr_mode;
-        attr->la_rdev  = rec->cr_rdev;
-        attr->la_uid   = rec->cr_fsuid;
-        attr->la_gid   = rec->cr_fsgid;
-        attr->la_ctime = rec->cr_time;
-        attr->la_mtime = rec->cr_time;
-        attr->la_atime = rec->cr_time;
-        attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
-                         LA_CTIME | LA_MTIME | LA_ATIME;
+       rr->rr_fid1   = &rec->cr_fid1;
+       rr->rr_fid2   = &rec->cr_fid2;
+       rr->rr_open_handle = &rec->cr_open_handle_old;
+       attr->la_mode = rec->cr_mode;
+       attr->la_rdev  = rec->cr_rdev;
+       attr->la_uid   = rec->cr_fsuid;
+       attr->la_gid   = rec->cr_fsgid;
+       attr->la_ctime = rec->cr_time;
+       attr->la_mtime = rec->cr_time;
+       attr->la_atime = rec->cr_time;
+       attr->la_valid = LA_MODE  | LA_RDEV  | LA_UID   | LA_GID |
+                        LA_CTIME | LA_MTIME | LA_ATIME;
         memset(&info->mti_spec.u, 0, sizeof(info->mti_spec.u));
         info->mti_spec.sp_cr_flags = get_mrc_cr_flags(rec);
         /* Do not trigger ASSERTION if client miss to set such flags. */
@@ -1465,6 +1613,7 @@ static int mdt_open_unpack(struct mdt_thread_info *info)
         if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
                 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
                                                         RCL_CLIENT);
+
                 if (rr->rr_eadatalen > 0) {
                         rr->rr_eadata = req_capsule_client_get(pill,
                                                                &RMF_EADATA);
@@ -1487,27 +1636,33 @@ static int mdt_open_unpack(struct mdt_thread_info *info)
        rc = mdt_file_secctx_unpack(pill, &sp->sp_cr_file_secctx_name,
                                    &sp->sp_cr_file_secctx,
                                    &sp->sp_cr_file_secctx_size);
+       if (rc < 0)
+               RETURN(rc);
+
+       rc = req_check_sepol(pill);
+       if (rc)
+               RETURN(rc);
 
        RETURN(rc);
 }
 
 static int mdt_setxattr_unpack(struct mdt_thread_info *info)
 {
-       struct mdt_reint_record *rr     = &info->mti_rr;
-       struct lu_ucred         *uc     = mdt_ucred(info);
-       struct lu_attr          *attr   = &info->mti_attr.ma_attr;
-       struct req_capsule      *pill   = info->mti_pill;
-       struct mdt_rec_setxattr *rec;
-       int                      rc;
+       struct mdt_reint_record *rr = &info->mti_rr;
+       struct lu_ucred *uc = mdt_ucred(info);
+       struct lu_attr *attr = &info->mti_attr.ma_attr;
+       struct req_capsule *pill = info->mti_pill;
+       struct mdt_rec_setxattr *rec;
+       int rc;
        ENTRY;
 
 
-        CLASSERT(sizeof(struct mdt_rec_setxattr) ==
-                         sizeof(struct mdt_rec_reint));
+       CLASSERT(sizeof(struct mdt_rec_setxattr) ==
+                sizeof(struct mdt_rec_reint));
 
-        rec = req_capsule_client_get(pill, &RMF_REC_REINT);
-        if (rec == NULL)
-                RETURN(-EFAULT);
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
 
        /* This prior initialization is needed for old_init_ucred_reint() */
        uc->uc_fsuid  = rec->sx_fsuid;
@@ -1530,6 +1685,10 @@ static int mdt_setxattr_unpack(struct mdt_thread_info *info)
         if (req_capsule_field_present(pill, &RMF_EADATA, RCL_CLIENT)) {
                 rr->rr_eadatalen = req_capsule_get_size(pill, &RMF_EADATA,
                                                         RCL_CLIENT);
+
+               if (rr->rr_eadatalen > info->mti_mdt->mdt_max_ea_size)
+                       RETURN(-E2BIG);
+
                 if (rr->rr_eadatalen > 0) {
                         rr->rr_eadata = req_capsule_client_get(pill,
                                                                &RMF_EADATA);
@@ -1543,12 +1702,46 @@ static int mdt_setxattr_unpack(struct mdt_thread_info *info)
                 RETURN(-EFAULT);
         }
 
+       rc = req_check_sepol(pill);
+       if (rc)
+               RETURN(rc);
+
        if (mdt_dlmreq_unpack(info) < 0)
                RETURN(-EPROTO);
 
         RETURN(0);
 }
 
+static int mdt_resync_unpack(struct mdt_thread_info *info)
+{
+       struct req_capsule      *pill = info->mti_pill;
+       struct mdt_reint_record *rr   = &info->mti_rr;
+       struct lu_ucred         *uc     = mdt_ucred(info);
+       struct mdt_rec_resync   *rec;
+       ENTRY;
+
+       CLASSERT(sizeof(*rec) == sizeof(struct mdt_rec_reint));
+       rec = req_capsule_client_get(pill, &RMF_REC_REINT);
+       if (rec == NULL)
+               RETURN(-EFAULT);
+
+       /* This prior initialization is needed for old_init_ucred_reint() */
+       uc->uc_fsuid = rec->rs_fsuid;
+       uc->uc_fsgid = rec->rs_fsgid;
+       uc->uc_cap   = rec->rs_cap;
+
+       rr->rr_fid1   = &rec->rs_fid;
+       rr->rr_mirror_id = rec->rs_mirror_id;
+
+       /* cookie doesn't need to be swapped but it has been swapped
+        * in lustre_swab_mdt_rec_reint() as rr_mtime, so here it needs
+        * restoring. */
+       if (ptlrpc_req_need_swab(mdt_info_req(info)))
+               __swab64s(&rec->rs_lease_handle.cookie);
+       rr->rr_lease_handle = &rec->rs_lease_handle;
+
+       RETURN(mdt_dlmreq_unpack(info));
+}
 
 typedef int (*reint_unpacker)(struct mdt_thread_info *info);
 
@@ -1561,7 +1754,8 @@ static reint_unpacker mdt_reint_unpackers[REINT_MAX] = {
        [REINT_OPEN]     = mdt_open_unpack,
        [REINT_SETXATTR] = mdt_setxattr_unpack,
        [REINT_RMENTRY]  = mdt_rmentry_unpack,
-       [REINT_MIGRATE]  = mdt_rename_unpack,
+       [REINT_MIGRATE]  = mdt_migrate_unpack,
+       [REINT_RESYNC]   = mdt_resync_unpack,
 };
 
 int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
@@ -1579,3 +1773,45 @@ int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op)
         }
         RETURN(rc);
 }
+
+void mdt_pack_secctx_in_reply(struct mdt_thread_info *info,
+                             struct mdt_object *child)
+{
+       char *secctx_name;
+       struct lu_buf *buffer;
+       struct mdt_body *repbody;
+       struct req_capsule *pill = info->mti_pill;
+       int rc;
+
+       if (req_capsule_has_field(pill, &RMF_FILE_SECCTX, RCL_SERVER) &&
+           req_capsule_get_size(pill, &RMF_FILE_SECCTX, RCL_SERVER) != 0) {
+               secctx_name =
+                       req_capsule_client_get(pill, &RMF_FILE_SECCTX_NAME);
+               buffer = &info->mti_buf;
+
+               /* fill reply buffer with security context now */
+               buffer->lb_len = req_capsule_get_size(pill, &RMF_FILE_SECCTX,
+                                                     RCL_SERVER);
+               buffer->lb_buf = req_capsule_server_get(info->mti_pill,
+                                                       &RMF_FILE_SECCTX);
+               rc = mo_xattr_get(info->mti_env, mdt_object_child(child),
+                                 buffer, secctx_name);
+               if (rc >= 0) {
+                       CDEBUG(D_SEC,
+                              "found security context of size %d for "DFID"\n",
+                              rc, PFID(mdt_object_fid(child)));
+
+                       repbody = req_capsule_server_get(pill, &RMF_MDT_BODY);
+                       repbody->mbo_valid |= OBD_MD_SECCTX;
+                       if (rc < buffer->lb_len)
+                               req_capsule_shrink(pill, &RMF_FILE_SECCTX, rc,
+                                                  RCL_SERVER);
+               } else {
+                       CDEBUG(D_SEC,
+                            "security context not found for "DFID": rc = %d\n",
+                            PFID(mdt_object_fid(child)), rc);
+                       req_capsule_shrink(pill, &RMF_FILE_SECCTX, 0,
+                                          RCL_SERVER);
+               }
+       }
+}