X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fmdt%2Fmdt_lib.c;h=be2531af823c36a57fbca6bbb43977b0adbb9dc5;hp=298f05860b6622b7b42e67d940f42a2acf4383b5;hb=355787745f21b22bb36210bb1c8e41fb34e7b665;hpb=0754bc8f2623bea184111af216f7567608db35b6 diff --git a/lustre/mdt/mdt_lib.c b/lustre/mdt/mdt_lib.c index 298f058..be2531a 100644 --- a/lustre/mdt/mdt_lib.c +++ b/lustre/mdt/mdt_lib.c @@ -15,11 +15,7 @@ * * 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 */ @@ -27,7 +23,7 @@ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, 2015, Intel Corporation. + * Copyright (c) 2011, 2017, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -49,11 +45,10 @@ #define DEBUG_SUBSYSTEM S_MDS #include -#ifdef HAVE_UIDGID_HEADER -# include -#endif +#include + #include "mdt_internal.h" -#include +#include #include typedef enum ucred_init_type { @@ -62,6 +57,11 @@ typedef enum ucred_init_type { REC_INIT = 2 } ucred_init_type_t; +static __u64 get_mrc_cr_flags(struct mdt_rec_create *mrc) +{ + return (__u64)(mrc->cr_flags_l) | ((__u64)mrc->cr_flags_h << 32); +} + void mdt_exit_ucred(struct mdt_thread_info *info) { struct lu_ucred *uc = mdt_ucred(info); @@ -83,15 +83,15 @@ void mdt_exit_ucred(struct mdt_thread_info *info) } } -static int match_nosquash_list(struct rw_semaphore *sem, +static int match_nosquash_list(struct spinlock *rsi_lock, struct list_head *nidlist, lnet_nid_t peernid) { int rc; ENTRY; - down_read(sem); + spin_lock(rsi_lock); rc = cfs_match_nid(peernid, nidlist); - up_read(sem); + spin_unlock(rsi_lock); RETURN(rc); } @@ -106,7 +106,7 @@ static int mdt_root_squash(struct mdt_thread_info *info, lnet_nid_t peernid) if (!squash->rsi_uid || ucred->uc_fsuid) RETURN(0); - if (match_nosquash_list(&squash->rsi_sem, + if (match_nosquash_list(&squash->rsi_lock, &squash->rsi_nosquash_nids, peernid)) { CDEBUG(D_OTHER, "%s is in nosquash_nids list\n", @@ -140,34 +140,89 @@ 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) + void *buf) { - 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; - __u32 remote = exp_connect_rmtclient(info->mti_exp); - 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_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; @@ -175,96 +230,67 @@ static int new_init_ucred(struct mdt_thread_info *info, ucred_init_type_t type, ucred->uc_suppgids[1] = -1; } - /* sanity check: we expect the uid which client claimed is true */ - if (remote) { - if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_mapped_uid))) { - CDEBUG(D_SEC, "remote user not mapped, deny access!\n"); - RETURN(-EACCES); - } - - if (ptlrpc_user_desc_do_idmap(req, pud)) - RETURN(-EACCES); - - if (req->rq_auth_mapped_uid != pud->pud_uid) { - CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u " - "while client claims %u:%u/%u:%u\n", - libcfs_nid2str(peernid), req->rq_auth_uid, - req->rq_auth_mapped_uid, - pud->pud_uid, pud->pud_gid, - pud->pud_fsuid, pud->pud_fsgid); - RETURN(-EACCES); - } - } else { - if (req->rq_auth_uid != pud->pud_uid) { - CDEBUG(D_SEC, "local client %s: auth uid %u " - "while client claims %u:%u/%u:%u\n", - libcfs_nid2str(peernid), req->rq_auth_uid, - pud->pud_uid, pud->pud_gid, - pud->pud_fsuid, pud->pud_fsgid); - RETURN(-EACCES); - } - } + if (!flvr_is_rootonly(req->rq_flvr.sf_rpc) && + req->rq_auth_uid != pud->pud_uid) { + CDEBUG(D_SEC, "local client %s: auth uid %u " + "while client claims %u:%u/%u:%u\n", + libcfs_nid2str(peernid), req->rq_auth_uid, + pud->pud_uid, pud->pud_gid, + pud->pud_fsuid, pud->pud_fsgid); + RETURN(-EACCES); + } - if (is_identity_get_disabled(mdt->mdt_identity_cache)) { - if (remote) { - CDEBUG(D_SEC, "remote client must run with identity_get " - "enabled!\n"); - RETURN(-EACCES); - } else { - ucred->uc_identity = NULL; - perm = CFS_SETUID_PERM | CFS_SETGID_PERM | - CFS_SETGRP_PERM; - } - } else { - struct md_identity *identity; + if (is_identity_get_disabled(mdt->mdt_identity_cache)) { + ucred->uc_identity = NULL; + perm = CFS_SETUID_PERM | CFS_SETGID_PERM | CFS_SETGRP_PERM; + } else { + struct md_identity *identity; - identity = mdt_identity_get(mdt->mdt_identity_cache, - pud->pud_uid); - if (IS_ERR(identity)) { - if (unlikely(PTR_ERR(identity) == -EREMCHG && - !remote)) { + identity = mdt_identity_get(mdt->mdt_identity_cache, + pud->pud_uid); + if (IS_ERR(identity)) { + if (unlikely(PTR_ERR(identity) == -EREMCHG)) { ucred->uc_identity = NULL; - perm = CFS_SETUID_PERM | CFS_SETGID_PERM | - CFS_SETGRP_PERM; - } else { - CDEBUG(D_SEC, "Deny access without identity: uid %u\n", - pud->pud_uid); - RETURN(-EACCES); - } - } else { + perm = CFS_SETUID_PERM | CFS_SETGID_PERM | + CFS_SETGRP_PERM; + } else { + CDEBUG(D_SEC, + "Deny access without identity: uid %u\n", + pud->pud_uid); + RETURN(-EACCES); + } + } else { ucred->uc_identity = identity; perm = mdt_identity_get_perm(ucred->uc_identity, - remote, peernid); - } - } + peernid); + } + } - /* find out the setuid/setgid attempt */ - setuid = (pud->pud_uid != pud->pud_fsuid); + /* find out the setuid/setgid attempt */ + setuid = (pud->pud_uid != pud->pud_fsuid); setgid = ((pud->pud_gid != pud->pud_fsgid) || (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); - } + } - /* - * NB: remote client not allowed to setgroups anyway. - */ - if (!remote && perm & CFS_SETGRP_PERM) { - if (pud->pud_ngroups) { + if (perm & CFS_SETGRP_PERM) { + /* 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) { @@ -277,6 +303,8 @@ 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 { @@ -285,24 +313,24 @@ 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; + + if (nodemap && ucred->uc_o_uid == nodemap->nm_squash_uid) { + ucred->uc_cap = 0; + } else { + ucred->uc_cap = pud->pud_cap; + } ucred->uc_fsuid = pud->pud_fsuid; ucred->uc_fsgid = pud->pud_fsgid; /* process root_squash here. */ mdt_root_squash(info, peernid); - /* remove fs privilege for non-root user. */ - if (ucred->uc_fsuid && drop_fs_cap) - ucred->uc_cap = pud->pud_cap & ~CFS_CAP_FS_MASK; - else - ucred->uc_cap = pud->pud_cap; - if (remote && !(perm & CFS_RMTOWN_PERM)) - ucred->uc_cap &= ~(CFS_CAP_SYS_RESOURCE_MASK | - CFS_CAP_CHOWN_MASK); ucred->uc_valid = UCRED_NEW; ucred_set_jobid(info, ucred); + ucred_set_nid(info, ucred); + ucred_set_audit_enabled(info, ucred); EXIT; @@ -333,17 +361,12 @@ out: */ bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc) { - __u32 remote = exp_connect_rmtclient(info->mti_exp); __u32 perm; - /* 1. If identity_upcall is disabled, then forbid remote client to set - * supplementary group IDs, but permit local client to do that. */ - if (is_identity_get_disabled(info->mti_mdt->mdt_identity_cache)) { - if (remote) - return false; - + /* 1. If identity_upcall is disabled, + * permit local client to do anything. */ + if (is_identity_get_disabled(info->mti_mdt->mdt_identity_cache)) return true; - } /* 2. If fail to get related identities, then forbid any client to * set supplementary group IDs. */ @@ -351,7 +374,7 @@ bool allow_client_chgrp(struct mdt_thread_info *info, struct lu_ucred *uc) return false; /* 3. Check the permission in the identities. */ - perm = mdt_identity_get_perm(uc->uc_identity, remote, + perm = mdt_identity_get_perm(uc->uc_identity, mdt_info_req(info)->rq_peer.nid); if (perm & CFS_SETGRP_PERM) return true; @@ -368,7 +391,6 @@ int mdt_check_ucred(struct mdt_thread_info *info) struct md_identity *identity = NULL; lnet_nid_t peernid = req->rq_peer.nid; __u32 perm = 0; - __u32 remote = exp_connect_rmtclient(info->mti_exp); int setuid; int setgid; int rc = 0; @@ -379,62 +401,36 @@ int mdt_check_ucred(struct mdt_thread_info *info) if ((ucred->uc_valid == UCRED_OLD) || (ucred->uc_valid == UCRED_NEW)) RETURN(0); - if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc) - RETURN(0); - - /* sanity check: if we use strong authentication, we expect the - * uid which client claimed is true */ - if (remote) { - if (!uid_valid(make_kuid(&init_user_ns, req->rq_auth_mapped_uid))) { - CDEBUG(D_SEC, "remote user not mapped, deny access!\n"); - RETURN(-EACCES); - } + if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc) + RETURN(0); - if (ptlrpc_user_desc_do_idmap(req, pud)) - RETURN(-EACCES); - - if (req->rq_auth_mapped_uid != pud->pud_uid) { - CDEBUG(D_SEC, "remote client %s: auth/mapped uid %u/%u " - "while client claims %u:%u/%u:%u\n", - libcfs_nid2str(peernid), req->rq_auth_uid, - req->rq_auth_mapped_uid, - pud->pud_uid, pud->pud_gid, - pud->pud_fsuid, pud->pud_fsgid); - RETURN(-EACCES); - } - } else { - if (req->rq_auth_uid != pud->pud_uid) { - CDEBUG(D_SEC, "local client %s: auth uid %u " - "while client claims %u:%u/%u:%u\n", - libcfs_nid2str(peernid), req->rq_auth_uid, - pud->pud_uid, pud->pud_gid, - pud->pud_fsuid, pud->pud_fsgid); - RETURN(-EACCES); - } - } + /* sanity check: if we use strong authentication, we expect the + * uid which client claimed is true */ + if (!flvr_is_rootonly(req->rq_flvr.sf_rpc) && + req->rq_auth_uid != pud->pud_uid) { + CDEBUG(D_SEC, "local client %s: auth uid %u " + "while client claims %u:%u/%u:%u\n", + libcfs_nid2str(peernid), req->rq_auth_uid, + pud->pud_uid, pud->pud_gid, + pud->pud_fsuid, pud->pud_fsgid); + RETURN(-EACCES); + } - if (is_identity_get_disabled(mdt->mdt_identity_cache)) { - if (remote) { - CDEBUG(D_SEC, "remote client must run with identity_get " - "enabled!\n"); - RETURN(-EACCES); - } - RETURN(0); - } + if (is_identity_get_disabled(mdt->mdt_identity_cache)) + RETURN(0); - identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid); - if (IS_ERR(identity)) { - if (unlikely(PTR_ERR(identity) == -EREMCHG && - !remote)) { - RETURN(0); - } else { - CDEBUG(D_SEC, "Deny access without identity: uid %u\n", - pud->pud_uid); - RETURN(-EACCES); - } - } + identity = mdt_identity_get(mdt->mdt_identity_cache, pud->pud_uid); + if (IS_ERR(identity)) { + if (unlikely(PTR_ERR(identity) == -EREMCHG)) { + RETURN(0); + } else { + CDEBUG(D_SEC, "Deny access without identity: uid %u\n", + pud->pud_uid); + RETURN(-EACCES); + } + } - perm = mdt_identity_get_perm(identity, remote, peernid); + perm = mdt_identity_get_perm(identity, peernid); /* find out the setuid/setgid attempt */ setuid = (pud->pud_uid != pud->pud_fsuid); setgid = (pud->pud_gid != pud->pud_fsgid || @@ -463,29 +459,64 @@ out: return rc; } -static void mdt_squash_nodemap_id(struct lu_ucred *ucred, - struct lu_nodemap *nodemap) +static int old_init_ucred_common(struct mdt_thread_info *info, + struct lu_nodemap *nodemap) { - if (ucred->uc_o_uid == nodemap->nm_squash_uid) { - 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; + struct lu_ucred *uc = mdt_ucred(info); + struct mdt_device *mdt = info->mti_mdt; + struct md_identity *identity = NULL; + + if (nodemap && uc->uc_o_uid == nodemap->nm_squash_uid) { + /* deny access before we get identity ref */ + if (nodemap->nmf_deny_unknown) + RETURN(-EACCES); + + uc->uc_cap = 0; + uc->uc_suppgids[0] = -1; + uc->uc_suppgids[1] = -1; } -} + if (!is_identity_get_disabled(mdt->mdt_identity_cache)) { + identity = mdt_identity_get(mdt->mdt_identity_cache, + uc->uc_fsuid); + if (IS_ERR(identity)) { + if (unlikely(PTR_ERR(identity) == -EREMCHG || + uc->uc_cap & CFS_CAP_FS_MASK)) { + identity = NULL; + } else { + CDEBUG(D_SEC, "Deny access without identity: " + "uid %u\n", uc->uc_fsuid); + RETURN(-EACCES); + } + } + } + uc->uc_identity = identity; + + /* process root_squash here. */ + mdt_root_squash(info, mdt_info_req(info)->rq_peer.nid); + + uc->uc_valid = UCRED_OLD; + ucred_set_jobid(info, uc); + ucred_set_nid(info, uc); + ucred_set_audit_enabled(info, uc); + + EXIT; + + return 0; +} static int old_init_ucred(struct mdt_thread_info *info, - struct mdt_body *body, bool drop_fs_cap) + struct mdt_body *body) { - struct lu_ucred *uc = mdt_ucred(info); - struct mdt_device *mdt = info->mti_mdt; - struct md_identity *identity = NULL; - struct lu_nodemap *nodemap = - info->mti_exp->exp_target_data.ted_nodemap; + struct lu_ucred *uc = mdt_ucred(info); + struct lu_nodemap *nodemap; + int rc; ENTRY; + nodemap = nodemap_get_from_exp(info->mti_exp); + if (IS_ERR(nodemap)) + RETURN(PTR_ERR(nodemap)); + body->mbo_uid = nodemap_map_id(nodemap, NODEMAP_UID, NODEMAP_CLIENT_TO_FS, body->mbo_uid); body->mbo_gid = nodemap_map_id(nodemap, NODEMAP_GID, @@ -504,46 +535,25 @@ static int old_init_ucred(struct mdt_thread_info *info, uc->uc_suppgids[0] = body->mbo_suppgid; uc->uc_suppgids[1] = -1; uc->uc_ginfo = NULL; - if (!is_identity_get_disabled(mdt->mdt_identity_cache)) { - identity = mdt_identity_get(mdt->mdt_identity_cache, - uc->uc_fsuid); - if (IS_ERR(identity)) { - if (unlikely(PTR_ERR(identity) == -EREMCHG)) { - identity = NULL; - } else { - CDEBUG(D_SEC, "Deny access without identity: " - "uid %u\n", uc->uc_fsuid); - RETURN(-EACCES); - } - } - } - uc->uc_identity = identity; - - mdt_squash_nodemap_id(uc, nodemap); + uc->uc_cap = body->mbo_capability; - /* process root_squash here. */ - mdt_root_squash(info, mdt_info_req(info)->rq_peer.nid); - - /* remove fs privilege for non-root user. */ - if (uc->uc_fsuid && drop_fs_cap) - uc->uc_cap = body->mbo_capability & ~CFS_CAP_FS_MASK; - else - uc->uc_cap = body->mbo_capability; - uc->uc_valid = UCRED_OLD; - ucred_set_jobid(info, uc); + rc = old_init_ucred_common(info, nodemap); + nodemap_putref(nodemap); - RETURN(0); + RETURN(rc); } static int old_init_ucred_reint(struct mdt_thread_info *info) { - struct lu_ucred *uc = mdt_ucred(info); - struct mdt_device *mdt = info->mti_mdt; - struct md_identity *identity = NULL; - struct lu_nodemap *nodemap = - info->mti_exp->exp_target_data.ted_nodemap; + struct lu_ucred *uc = mdt_ucred(info); + struct lu_nodemap *nodemap; + int rc; ENTRY; + nodemap = nodemap_get_from_exp(info->mti_exp); + if (IS_ERR(nodemap)) + RETURN(PTR_ERR(nodemap)); + LASSERT(uc != NULL); uc->uc_fsuid = nodemap_map_id(nodemap, NODEMAP_UID, @@ -556,36 +566,14 @@ static int old_init_ucred_reint(struct mdt_thread_info *info) uc->uc_o_gid = uc->uc_o_fsgid = uc->uc_gid = uc->uc_fsgid; uc->uc_ginfo = NULL; - if (!is_identity_get_disabled(mdt->mdt_identity_cache)) { - identity = mdt_identity_get(mdt->mdt_identity_cache, - uc->uc_fsuid); - if (IS_ERR(identity)) { - if (unlikely(PTR_ERR(identity) == -EREMCHG)) { - identity = NULL; - } else { - CDEBUG(D_SEC, "Deny access without identity: " - "uid %u\n", uc->uc_fsuid); - RETURN(-EACCES); - } - } - } - uc->uc_identity = identity; - - /* process root_squash here. */ - mdt_root_squash(info, mdt_info_req(info)->rq_peer.nid); - - /* remove fs privilege for non-root user. */ - if (uc->uc_fsuid) - uc->uc_cap &= ~CFS_CAP_FS_MASK; - uc->uc_valid = UCRED_OLD; - ucred_set_jobid(info, uc); + rc = old_init_ucred_common(info, nodemap); + nodemap_putref(nodemap); - RETURN(0); + RETURN(rc); } static inline int __mdt_init_ucred(struct mdt_thread_info *info, - struct mdt_body *body, - bool drop_fs_cap) + struct mdt_body *body) { struct ptlrpc_request *req = mdt_info_req(info); struct lu_ucred *uc = mdt_ucred(info); @@ -597,59 +585,59 @@ static inline int __mdt_init_ucred(struct mdt_thread_info *info, mdt_exit_ucred(info); if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc) - return old_init_ucred(info, body, drop_fs_cap); + return old_init_ucred(info, body); else - return new_init_ucred(info, BODY_INIT, body, drop_fs_cap); + return new_init_ucred(info, BODY_INIT, body); } int mdt_init_ucred(struct mdt_thread_info *info, struct mdt_body *body) { - return __mdt_init_ucred(info, body, true); -} - -/* LU-6528 when "no_subtree_check" is set for NFS export, nfsd_set_fh_dentry() - * doesn't set correct fsuid explicitely, but raise capability to allow - * exportfs_decode_fh() to reconnect disconnected dentry into dcache. So for - * lookup (i.e. intent_getattr), we should keep FS capability, otherwise it - * will fail permission check. */ -int mdt_init_ucred_intent_getattr(struct mdt_thread_info *info, - struct mdt_body *body) -{ - return __mdt_init_ucred(info, body, false); + return __mdt_init_ucred(info, body); } int mdt_init_ucred_reint(struct mdt_thread_info *info) { struct ptlrpc_request *req = mdt_info_req(info); struct lu_ucred *uc = mdt_ucred(info); + struct md_attr *ma = &info->mti_attr; LASSERT(uc != NULL); if ((uc->uc_valid == UCRED_OLD) || (uc->uc_valid == UCRED_NEW)) return 0; + /* LU-5564: for normal close request, skip permission check */ + if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE && + !(ma->ma_attr_flags & (MDS_HSM_RELEASE | MDS_CLOSE_LAYOUT_SWAP))) + uc->uc_cap |= CFS_CAP_FS_MASK; + mdt_exit_ucred(info); if (!req->rq_auth_gss || req->rq_auth_usr_mdt || !req->rq_user_desc) return old_init_ucred_reint(info); else - return new_init_ucred(info, REC_INIT, NULL, true); + return new_init_ucred(info, REC_INIT, NULL); } /* 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); @@ -672,16 +660,32 @@ 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\n", + CDEBUG(level, + "magic 0x%08X, master %#X stripe_count %#x hash_type %#x\n", le32_to_cpu(lmm1->lmv_magic), le32_to_cpu(lmm1->lmv_master_mdt_index), - le32_to_cpu(lmm1->lmv_stripe_count)); + le32_to_cpu(lmm1->lmv_stripe_count), + le32_to_cpu(lmm1->lmv_hash_type)); if (le32_to_cpu(lmm1->lmv_magic) == LMV_MAGIC_STRIPE) return; @@ -715,7 +719,7 @@ int mdt_fix_reply(struct mdt_thread_info *info) acl_size = body->mbo_aclsize; - /* this replay - not send info to client */ + /* this replay - not send info to client */ if (info->mti_spec.no_create) { md_size = 0; acl_size = 0; @@ -750,30 +754,39 @@ int mdt_fix_reply(struct mdt_thread_info *info) req_capsule_server_get(pill, &RMF_MDT_MD)); req_capsule_shrink(pill, &RMF_MDT_MD, 0, RCL_SERVER); } - } else if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) { - req_capsule_shrink(pill, &RMF_MDT_MD, md_size, RCL_SERVER); - } + } else if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) { + req_capsule_shrink(pill, &RMF_MDT_MD, md_size, RCL_SERVER); + } - if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER)) - req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER); - else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER)) - req_capsule_shrink(pill, &RMF_LOGCOOKIES, - acl_size, RCL_SERVER); + if (info->mti_big_acl_used) { + if (acl_size == 0) + info->mti_big_acl_used = 0; + else + req_capsule_shrink(pill, &RMF_ACL, 0, RCL_SERVER); + } else if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER)) { + req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER); + } else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER)) { + 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); + /* 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); - 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 ENCCTX buffer if it is not used */ + if (req_capsule_has_field(pill, &RMF_FILE_ENCCTX, RCL_SERVER) && + req_capsule_get_size(pill, &RMF_FILE_ENCCTX, RCL_SERVER) != 0 && + !(body->mbo_valid & OBD_MD_ENCCTX)) + req_capsule_shrink(pill, &RMF_FILE_ENCCTX, 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; @@ -804,37 +817,135 @@ int mdt_fix_reply(struct mdt_thread_info *info) memcpy(lmm, info->mti_attr.ma_lmv, info->mti_attr.ma_lmv_size); } - } - /* update mdt_max_mdsize so clients will be aware about that */ - if (info->mti_mdt->mdt_max_mdsize < info->mti_attr.ma_lmm_size) - info->mti_mdt->mdt_max_mdsize = - info->mti_attr.ma_lmm_size; + } + + /* update mdt_max_mdsize so clients will be aware about that */ + if (info->mti_mdt->mdt_max_mdsize < info->mti_attr.ma_lmm_size) + info->mti_mdt->mdt_max_mdsize = + info->mti_attr.ma_lmm_size; info->mti_big_lmm_used = 0; - } - RETURN(rc); + } + + if (info->mti_big_acl_used) { + CDEBUG(D_INFO, "Enlarge reply ACL buffer to %d bytes\n", + acl_size); + + rc = req_capsule_server_grow(pill, &RMF_ACL, acl_size); + if (rc) { + body->mbo_valid &= ~OBD_MD_FLACL; + } else { + void *acl = req_capsule_server_get(pill, &RMF_ACL); + + memcpy(acl, info->mti_big_acl, acl_size); + } + + info->mti_big_acl_used = 0; + } + + RETURN(rc); } /* if object is dying, pack the lov/llog data, - * parameter info->mti_attr should be valid at this point! */ + * parameter info->mti_attr should be valid at this point! + * Also implements RAoLU policy */ int mdt_handle_last_unlink(struct mdt_thread_info *info, struct mdt_object *mo, - const struct md_attr *ma) + struct md_attr *ma) { - struct mdt_body *repbody; + struct mdt_body *repbody = NULL; const struct lu_attr *la = &ma->ma_attr; + struct coordinator *cdt = &info->mti_mdt->mdt_coordinator; + int rc; + __u64 need = 0; + struct hsm_action_item hai = { + .hai_len = sizeof(hai), + .hai_action = HSMA_REMOVE, + .hai_extent.length = -1, + .hai_cookie = 0, + .hai_gid = 0, + }; + int archive_id; + ENTRY; - repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); - LASSERT(repbody != NULL); + if (mdt_info_req(info) != NULL) { + repbody = req_capsule_server_get(info->mti_pill, &RMF_MDT_BODY); + LASSERT(repbody != NULL); + } else { + CDEBUG(D_INFO, "not running in a request/reply context\n"); + } - if (ma->ma_valid & MA_INODE) + if ((ma->ma_valid & MA_INODE) && repbody != NULL) mdt_pack_attr2body(info, repbody, la, mdt_object_fid(mo)); - if (ma->ma_valid & MA_LOV) { + if (ma->ma_valid & MA_LOV) { CERROR("No need in LOV EA upon unlink\n"); dump_stack(); - } - repbody->mbo_eadatasize = 0; + } + if (repbody != NULL) + repbody->mbo_eadatasize = 0; + + /* Only check unlinked and archived if RAoLU and upon last close */ + if (!cdt->cdt_remove_archive_on_last_unlink || + atomic_read(&mo->mot_open_count) != 0) + RETURN(0); + + /* mdt_attr_get_complex will clear ma_valid, so check here first */ + if ((ma->ma_valid & MA_INODE) && (ma->ma_attr.la_nlink != 0)) + RETURN(0); + + if ((ma->ma_valid & MA_HSM) && (!(ma->ma_hsm.mh_flags & HS_EXISTS))) + RETURN(0); + + need |= (MA_INODE | MA_HSM) & ~ma->ma_valid; + if (need != 0) { + /* ma->ma_valid is missing either MA_INODE, MA_HSM, or both, + * try setting them */ + ma->ma_need |= need; + rc = mdt_attr_get_complex(info, mo, ma); + if (rc) { + CERROR("%s: unable to fetch missing attributes of" + DFID": rc=%d\n", mdt_obd_name(info->mti_mdt), + PFID(mdt_object_fid(mo)), rc); + RETURN(0); + } + + if (need & MA_INODE) { + if (ma->ma_valid & MA_INODE) { + if (ma->ma_attr.la_nlink != 0) + RETURN(0); + } else { + RETURN(0); + } + } + + if (need & MA_HSM) { + if (ma->ma_valid & MA_HSM) { + if (!(ma->ma_hsm.mh_flags & HS_EXISTS)) + RETURN(0); + } else { + RETURN(0); + } + } + } + + /* RAoLU policy is active, last close on file has occured, + * file is unlinked, file is archived, so create remove request + * for copytool! + * If CDT is not running, requests will be logged for later. */ + if (ma->ma_hsm.mh_arch_id != 0) + archive_id = ma->ma_hsm.mh_arch_id; + else + archive_id = cdt->cdt_default_archive_id; + + hai.hai_fid = *mdt_object_fid(mo); + + 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), + PFID(mdt_object_fid(mo)), rc); RETURN(0); } @@ -867,22 +978,29 @@ static __u64 mdt_attr_valid_xlate(__u64 in, struct mdt_reint_record *rr, out |= LA_KILL_SUID; if (in & MDS_ATTR_KILL_SGID) 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; - in &= ~(MDS_ATTR_MODE | MDS_ATTR_UID | MDS_ATTR_GID | + in &= ~(MDS_ATTR_MODE | MDS_ATTR_UID | MDS_ATTR_GID | MDS_ATTR_PROJID | MDS_ATTR_ATIME | MDS_ATTR_MTIME | MDS_ATTR_CTIME | 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: "LPX64"\n", in); + CDEBUG(D_INFO, "Unknown attr bits: %#llx\n", in); return out; } @@ -915,22 +1033,82 @@ int mdt_name_unpack(struct req_capsule *pill, return 0; } -static int mdt_setattr_unpack_rec(struct mdt_thread_info *info) +static int mdt_file_secctx_unpack(struct req_capsule *pill, + const char **secctx_name, + void **secctx, size_t *secctx_size) { - 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 = - info->mti_exp->exp_target_data.ted_nodemap; - ENTRY; + const char *name; + size_t name_size; - 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); + *secctx_name = NULL; + *secctx = NULL; + *secctx_size = 0; + + if (!req_capsule_has_field(pill, &RMF_FILE_SECCTX_NAME, RCL_CLIENT) || + !req_capsule_field_present(pill, &RMF_FILE_SECCTX_NAME, RCL_CLIENT)) + return 0; + + name_size = req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME, + RCL_CLIENT); + if (name_size == 0) + return 0; + + if (name_size > XATTR_NAME_MAX + 1) + return -EPROTO; + + name = req_capsule_client_get(pill, &RMF_FILE_SECCTX_NAME); + if (strnlen(name, name_size) != name_size - 1) + return -EPROTO; + + if (!req_capsule_has_field(pill, &RMF_FILE_SECCTX, RCL_CLIENT) || + !req_capsule_field_present(pill, &RMF_FILE_SECCTX, RCL_CLIENT)) + return -EPROTO; + + *secctx_name = name; + *secctx = req_capsule_client_get(pill, &RMF_FILE_SECCTX); + *secctx_size = req_capsule_get_size(pill, &RMF_FILE_SECCTX, RCL_CLIENT); + + return 0; +} + +static int mdt_file_encctx_unpack(struct req_capsule *pill, + void **encctx, size_t *encctx_size) +{ + *encctx = NULL; + *encctx_size = 0; + + if (!exp_connect_encrypt(pill->rc_req->rq_export)) + return 0; + + if (!req_capsule_has_field(pill, &RMF_FILE_ENCCTX, RCL_CLIENT) || + !req_capsule_field_present(pill, &RMF_FILE_ENCCTX, RCL_CLIENT)) + return -EPROTO; + + *encctx_size = req_capsule_get_size(pill, &RMF_FILE_ENCCTX, RCL_CLIENT); + if (*encctx_size == 0) + return 0; + + *encctx = req_capsule_client_get(pill, &RMF_FILE_ENCCTX); + + return 0; +} + +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; + + BUILD_BUG_ON(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; @@ -943,10 +1121,18 @@ static int mdt_setattr_unpack_rec(struct mdt_thread_info *info) la->la_valid = mdt_attr_valid_xlate(rec->sa_valid, rr, ma); la->la_mode = rec->sa_mode; la->la_flags = rec->sa_attr_flags; + + nodemap = nodemap_get_from_exp(info->mti_exp); + if (IS_ERR(nodemap)) + RETURN(PTR_ERR(nodemap)); + la->la_uid = nodemap_map_id(nodemap, NODEMAP_UID, NODEMAP_CLIENT_TO_FS, rec->sa_uid); la->la_gid = nodemap_map_id(nodemap, NODEMAP_GID, NODEMAP_CLIENT_TO_FS, rec->sa_gid); + la->la_projid = rec->sa_projid; + nodemap_putref(nodemap); + la->la_size = rec->sa_size; la->la_blocks = rec->sa_blocks; la->la_ctime = rec->sa_ctime; @@ -954,21 +1140,9 @@ 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 | + MDS_PCC_ATTACH); RETURN(0); } @@ -986,7 +1160,7 @@ 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); } @@ -1019,6 +1193,7 @@ 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; @@ -1041,16 +1216,16 @@ 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))) @@ -1072,7 +1247,7 @@ 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); @@ -1081,19 +1256,20 @@ 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; + + BUILD_BUG_ON(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; @@ -1132,7 +1308,7 @@ static int mdt_create_unpack(struct mdt_thread_info *info) if (tgt == NULL) RETURN(-EFAULT); } else { - req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_RMT_ACL); + req_capsule_extend(pill, &RQF_MDS_REINT_CREATE_ACL); if (S_ISDIR(attr->la_mode) && req_capsule_get_size(pill, &RMF_EADATA, RCL_CLIENT) > 0) { sp->u.sp_ea.eadata = @@ -1144,24 +1320,40 @@ static int mdt_create_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 = mdt_file_encctx_unpack(pill, &sp->sp_cr_file_encctx, + &sp->sp_cr_file_encctx_size); + 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; + + BUILD_BUG_ON(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; @@ -1182,6 +1374,10 @@ 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); @@ -1189,19 +1385,19 @@ 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; + + BUILD_BUG_ON(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; @@ -1210,28 +1406,27 @@ 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) @@ -1242,19 +1437,20 @@ 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; + + BUILD_BUG_ON(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; @@ -1263,15 +1459,15 @@ 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) @@ -1281,21 +1477,88 @@ 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); + + 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; + + BUILD_BUG_ON(sizeof(*rec) != sizeof(struct mdt_rec_reint)); + rec = req_capsule_client_get(pill, &RMF_REC_REINT); + if (rec == NULL) + RETURN(-EFAULT); - if (rec->rn_bias & MDS_RENAME_MIGRATE) { - req_capsule_extend(info->mti_pill, &RQF_MDS_REINT_MIGRATE); + /* 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; + spec->sp_cr_flags = 0; + + 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; - } - info->mti_spec.no_create = !!req_is_replay(mdt_info_req(info)); + spec->sp_migrate_close = 1; + } else { + spec->sp_migrate_close = 0; + } + spec->sp_migrate_nsonly = 0; + + /* 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); @@ -1303,44 +1566,40 @@ 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 */ -static void mdt_fix_lov_magic(struct mdt_thread_info *info) +void mdt_fix_lov_magic(struct mdt_thread_info *info, void *eadata) { - struct mdt_reint_record *rr = &info->mti_rr; - struct lov_user_md_v1 *v1; + struct lov_user_md_v1 *v1 = eadata; - v1 = (void *)rr->rr_eadata; LASSERT(v1); if (unlikely(req_is_replay(mdt_info_req(info)))) { - if (v1->lmm_magic == LOV_USER_MAGIC_V1) { - v1->lmm_magic = LOV_MAGIC_V1_DEF; - } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V1)) { - v1->lmm_magic = __swab32(LOV_MAGIC_V1_DEF); - } else if (v1->lmm_magic == LOV_USER_MAGIC_V3) { - v1->lmm_magic = LOV_MAGIC_V3_DEF; - } else if (v1->lmm_magic == __swab32(LOV_USER_MAGIC_V3)) { - v1->lmm_magic = __swab32(LOV_MAGIC_V3_DEF); - } + if ((v1->lmm_magic & LOV_MAGIC_MASK) == LOV_MAGIC_MAGIC) + 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_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; - ENTRY; + 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; - 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); + BUILD_BUG_ON(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; @@ -1350,18 +1609,18 @@ 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. */ @@ -1375,13 +1634,15 @@ 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); sp->u.sp_ea.eadatalen = rr->rr_eadatalen; sp->u.sp_ea.eadata = rr->rr_eadata; + sp->sp_archive_id = rec->cr_archive_id; sp->no_create = !!req_is_replay(req); - mdt_fix_lov_magic(info); + mdt_fix_lov_magic(info, rr->rr_eadata); } /* @@ -1394,26 +1655,40 @@ static int mdt_open_unpack(struct mdt_thread_info *info) rr->rr_eadatalen = MIN_MD_SIZE; } - RETURN(0); + 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 = mdt_file_encctx_unpack(pill, &sp->sp_cr_file_encctx, + &sp->sp_cr_file_encctx_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)); - - rec = req_capsule_client_get(pill, &RMF_REC_REINT); - if (rec == NULL) - RETURN(-EFAULT); + BUILD_BUG_ON(sizeof(struct mdt_rec_setxattr) != + 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->sx_fsuid; @@ -1436,6 +1711,10 @@ 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); @@ -1449,12 +1728,46 @@ 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; + + BUILD_BUG_ON(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); @@ -1467,7 +1780,8 @@ 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) @@ -1485,3 +1799,225 @@ int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op) } RETURN(rc); } + +int 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 = 0; + + 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); + rc = 0; + } 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); + /* handling -ENOENT is important because it may change + * object state in DNE env dropping LOHA_EXISTS flag, + * it is important to return that to the caller. + * Check LU-13115 for details. + */ + if (rc != -ENOENT) + rc = 0; + } + } + return rc; +} + +/* check whether two FIDs belong to different MDT. */ +static int mdt_fids_different_target(struct mdt_thread_info *info, + const struct lu_fid *fid1, + const struct lu_fid *fid2) +{ + const struct lu_env *env = info->mti_env; + struct mdt_device *mdt = info->mti_mdt; + struct lu_seq_range *range = &info->mti_range; + struct seq_server_site *ss; + __u32 index1, index2; + int rc; + + if (fid_seq(fid1) == fid_seq(fid2)) + return 0; + + ss = mdt->mdt_lu_dev.ld_site->ld_seq_site; + + range->lsr_flags = LU_SEQ_RANGE_MDT; + rc = fld_server_lookup(env, ss->ss_server_fld, fid1->f_seq, range); + if (rc) + return rc; + + index1 = range->lsr_index; + + rc = fld_server_lookup(env, ss->ss_server_fld, fid2->f_seq, range); + if (rc) + return rc; + + index2 = range->lsr_index; + + return index1 != index2; +} + +/** + * Check whether \a child is remote object on \a parent. + * + * \param[in] info thread environment + * \param[in] parent parent object, it's the same as child object in + * getattr_by_fid + * \param[in] child child object + * + * \retval 1 is remote object. + * \retval 0 isn't remote object. + * \retval < 1 error code + */ +int mdt_is_remote_object(struct mdt_thread_info *info, + struct mdt_object *parent, + struct mdt_object *child) +{ + struct lu_buf *buf = &info->mti_big_buf; + struct linkea_data ldata = { NULL }; + struct link_ea_header *leh; + struct link_ea_entry *lee; + struct lu_name name; + struct lu_fid pfid; + int reclen; + int i; + int rc; + + ENTRY; + + if (fid_is_root(mdt_object_fid(child))) + RETURN(0); + + if (likely(parent != child)) { + if (mdt_object_remote(parent) ^ mdt_object_remote(child)) + RETURN(1); + + if (!mdt_object_remote(parent) && !mdt_object_remote(child)) + RETURN(0); + + rc = mdt_fids_different_target(info, mdt_object_fid(parent), + mdt_object_fid(child)); + RETURN(rc); + } + + /* client < 2.13.52 getattr_by_fid parent and child are the same */ + buf = lu_buf_check_and_alloc(buf, PATH_MAX); + if (!buf->lb_buf) + RETURN(-ENOMEM); + + ldata.ld_buf = buf; + rc = mdt_links_read(info, child, &ldata); + /* can't read linkea, just assume it's remote object */ + if (rc == -ENOENT || rc == -ENODATA) + RETURN(1); + if (rc) + RETURN(rc); + + leh = buf->lb_buf; + lee = (struct link_ea_entry *)(leh + 1); + for (i = 0; i < leh->leh_reccount; i++) { + linkea_entry_unpack(lee, &reclen, &name, &pfid); + lee = (struct link_ea_entry *) ((char *)lee + reclen); + if (mdt_fids_different_target(info, &pfid, + mdt_object_fid(child))) + RETURN(1); + } + + RETURN(0); +} + +int mdt_pack_encctx_in_reply(struct mdt_thread_info *info, + struct mdt_object *child) +{ + struct lu_buf *buffer; + struct mdt_body *repbody; + struct req_capsule *pill = info->mti_pill; + struct obd_export *exp = mdt_info_req(info)->rq_export; + int rc = 0; + + if (!exp_connect_encrypt(exp)) + return rc; + + if (req_capsule_has_field(pill, &RMF_FILE_ENCCTX, RCL_SERVER) && + req_capsule_get_size(pill, &RMF_FILE_ENCCTX, RCL_SERVER) != 0) { + struct lu_attr la = { 0 }; + struct dt_object *dt = mdt_obj2dt(child); + + if (dt && dt->do_ops && dt->do_ops->do_attr_get) + dt_attr_get(info->mti_env, mdt_obj2dt(child), &la); + + if (la.la_valid & LA_FLAGS && la.la_flags & LUSTRE_ENCRYPT_FL) { + buffer = &info->mti_buf; + + /* fill reply buffer with encryption context now */ + buffer->lb_len = + req_capsule_get_size(pill, &RMF_FILE_ENCCTX, + RCL_SERVER); + buffer->lb_buf = + req_capsule_server_get(pill, &RMF_FILE_ENCCTX); + rc = mo_xattr_get(info->mti_env, + mdt_object_child(child), + buffer, + LL_XATTR_NAME_ENCRYPTION_CONTEXT); + if (rc >= 0) { + CDEBUG(D_SEC, + "found encryption ctx 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_ENCCTX; + if (rc < buffer->lb_len) + req_capsule_shrink(pill, + &RMF_FILE_ENCCTX, rc, + RCL_SERVER); + rc = 0; + } else { + CDEBUG(D_SEC, + "encryption ctx not found for "DFID": rc = %d\n", + PFID(mdt_object_fid(child)), rc); + req_capsule_shrink(pill, &RMF_FILE_ENCCTX, 0, + RCL_SERVER); + /* handling -ENOENT is important because it may + * change object state in DNE env dropping + * LOHA_EXISTS flag, it is important to return + * that to the caller. + * Check LU-13115 for details. + */ + if (rc != -ENOENT) + rc = 0; + } + } else { + req_capsule_shrink(pill, &RMF_FILE_ENCCTX, 0, + RCL_SERVER); + } + } + return rc; +}