Viewing: mdc_lib.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*/
#define DEBUG_SUBSYSTEM S_MDC
#include <linux/user_namespace.h>
#include <linux/uidgid.h>
#include <lustre_net.h>
#include <obd_class.h>
#include <obd.h>
#include <cl_object.h>
#include "mdc_internal.h"
/**
* set_mrc_cr_flags() - Move @flags into high(most significant bits (cr_flags_h)
* and low(least significant bits (cr_flags_l)) field under
* reint record
* @mrc: instance of mdt_reint_rec
* @flags: open flags passed from client
*/
static void set_mrc_cr_flags(struct mdt_rec_create *mrc,
enum mds_open_flags flags)
{
mrc->cr_flags_l = (__u32)(flags & 0xFFFFFFFFUll);
mrc->cr_flags_h = (__u32)(flags >> 32);
}
static void __mdc_pack_body(struct mdt_body *b, __u32 suppgid)
{
LASSERT(b);
b->mbo_suppgid = suppgid;
b->mbo_uid = from_kuid(&init_user_ns, current_uid());
b->mbo_gid = from_kgid(&init_user_ns, current_gid());
b->mbo_fsuid = from_kuid(&init_user_ns, current_fsuid());
b->mbo_fsgid = from_kgid(&init_user_ns, current_fsgid());
b->mbo_capability = ll_capability_u32(current_cap());
}
void mdc_swap_layouts_pack(struct req_capsule *pill,
struct md_op_data *op_data)
{
struct mdt_body *b = req_capsule_client_get(pill, &RMF_MDT_BODY);
__mdc_pack_body(b, op_data->op_suppgids[0]);
b->mbo_fid1 = op_data->op_fid1;
b->mbo_fid2 = op_data->op_fid2;
b->mbo_valid |= OBD_MD_FLID;
}
void mdc_pack_body(struct req_capsule *pill, const struct lu_fid *fid,
u64 valid, size_t ea_size, u32 suppgid, u32 flags,
u32 projid)
{
struct mdt_body *b = req_capsule_client_get(pill, &RMF_MDT_BODY);
LASSERT(b);
b->mbo_valid = valid;
b->mbo_eadatasize = ea_size;
b->mbo_flags = flags;
__mdc_pack_body(b, suppgid);
if (fid) {
b->mbo_fid1 = *fid;
b->mbo_valid |= OBD_MD_FLID;
}
if (projid != MDT_INVALID_PROJID && req_capsule_ptlreq(pill))
lustre_msg_set_projid(pill->rc_reqmsg, projid);
}
/**
* mdc_pack_name() - Pack a name (path component) into a request
* @pill: request pill
* @field: request field (usually RMF_NAME)
* @name: path component
* @name_len: length of path component
*
* @field must be present in @req and of size @name_len + 1.
*
* @name must be '\0' terminated of length @name_len and represent
* a single path component (not contain '/').
*/
static void mdc_pack_name(struct req_capsule *pill,
const struct req_msg_field *field,
const char *name, size_t name_len)
{
char *buf;
size_t buf_size;
size_t cpy_len;
buf = req_capsule_client_get(pill, field);
buf_size = req_capsule_get_size(pill, field, RCL_CLIENT);
LASSERT(buf != NULL && buf_size == name_len + 1);
if (!name) {
buf[name_len] = '\0';
return;
}
cpy_len = strscpy(buf, name, buf_size);
LASSERT(lu_name_is_valid_2(buf, cpy_len));
if (cpy_len != name_len)
CDEBUG(D_DENTRY, "%s len %zd != %zd, concurrent rename?\n",
buf, name_len, cpy_len);
}
void mdc_file_secctx_pack(struct req_capsule *pill, const char *secctx_name,
const void *secctx, size_t secctx_size)
{
void *buf;
size_t buf_size;
if (secctx_name == NULL)
return;
buf = req_capsule_client_get(pill, &RMF_FILE_SECCTX_NAME);
buf_size = req_capsule_get_size(pill, &RMF_FILE_SECCTX_NAME,
RCL_CLIENT);
LASSERT(buf_size == strlen(secctx_name) + 1);
memcpy(buf, secctx_name, buf_size);
buf = req_capsule_client_get(pill, &RMF_FILE_SECCTX);
buf_size = req_capsule_get_size(pill, &RMF_FILE_SECCTX,
RCL_CLIENT);
LASSERT(buf_size == secctx_size);
memcpy(buf, secctx, buf_size);
}
void mdc_file_encctx_pack(struct req_capsule *pill,
const void *encctx, size_t encctx_size)
{
void *buf;
size_t buf_size;
if (encctx == NULL)
return;
buf = req_capsule_client_get(pill, &RMF_FILE_ENCCTX);
buf_size = req_capsule_get_size(pill, &RMF_FILE_ENCCTX,
RCL_CLIENT);
LASSERT(buf_size == encctx_size);
memcpy(buf, encctx, buf_size);
}
void mdc_file_sepol_pack(struct req_capsule *pill, struct sptlrpc_sepol *p)
{
void *buf;
size_t buf_size;
if (!p || !p->ssp_sepol_size)
return;
buf = req_capsule_client_get(pill, &RMF_SELINUX_POL);
buf_size = req_capsule_get_size(pill, &RMF_SELINUX_POL,
RCL_CLIENT);
LASSERT(buf_size == p->ssp_sepol_size);
strscpy(buf, p->ssp_sepol, p->ssp_sepol_size);
}
void mdc_readdir_pack(struct req_capsule *pill, __u64 pgoff, size_t size,
const struct lu_fid *fid)
{
struct mdt_body *b = req_capsule_client_get(pill, &RMF_MDT_BODY);
b->mbo_fid1 = *fid;
b->mbo_valid |= OBD_MD_FLID;
b->mbo_size = pgoff; /* !! */
b->mbo_nlink = size; /* !! */
__mdc_pack_body(b, -1);
b->mbo_mode = LUDA_FID | LUDA_TYPE;
}
/* packing of MDS records */
void mdc_create_pack(struct req_capsule *pill, struct md_op_data *op_data,
const void *data, size_t datalen, umode_t mode,
uid_t uid, gid_t gid, kernel_cap_t cap_effective, u64 rdev,
struct sptlrpc_sepol *sepol)
{
struct mdt_rec_create *rec;
enum mds_open_flags flags;
char *tmp;
BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
sizeof(struct mdt_rec_create));
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
rec->cr_opcode = REINT_CREATE;
rec->cr_fsuid = uid;
rec->cr_fsgid = gid;
rec->cr_cap = ll_capability_u32(cap_effective);
rec->cr_fid1 = op_data->op_fid1;
rec->cr_fid2 = op_data->op_fid2;
rec->cr_mode = mode;
rec->cr_rdev = rdev;
rec->cr_time = op_data->op_mod_time;
rec->cr_suppgid1 = op_data->op_suppgids[0];
rec->cr_suppgid2 = op_data->op_suppgids[1];
flags = 0;
if (S_ISDIR(mode))
flags |= MDS_MKDIR_LMV;
if (op_data->op_bias & MDS_CREATE_VOLATILE)
flags |= MDS_OPEN_VOLATILE;
if (op_data->op_bias & MDS_SETSTRIPE_CREATE)
/* borrow MDS_OPEN_CREATE flag to indicate current setstripe
* create only, and don't restripe if object exists.
*/
flags |= MDS_OPEN_CREAT;
if (op_data->op_bias & MDS_CREATE_DEFAULT_LMV) {
/* borrow MDS_OPEN_DEFAULT_LMV flag to indicate parent default
* LMV is packed in create request.
*/
flags |= MDS_OPEN_DEFAULT_LMV;
LASSERT(data);
}
set_mrc_cr_flags(rec, flags);
rec->cr_bias = op_data->op_bias;
rec->cr_umask = current_umask();
rec->cr_layout_ver = op_data->op_layout_version;
mdc_pack_name(pill, &RMF_NAME, op_data->op_name, op_data->op_namelen);
if (data) {
tmp = req_capsule_client_get(pill, &RMF_EADATA);
memcpy(tmp, data, datalen);
}
mdc_file_secctx_pack(pill, op_data->op_file_secctx_name,
op_data->op_file_secctx,
op_data->op_file_secctx_size);
mdc_file_encctx_pack(pill, op_data->op_file_encctx,
op_data->op_file_encctx_size);
/* pack SELinux policy info if any */
mdc_file_sepol_pack(pill, sepol);
}
static inline __u64 mds_pack_open_flags(enum mds_open_flags flags)
{
enum mds_open_flags cr_flags = (flags & MDS_OPEN_FL_INTERNAL);
if (flags & FMODE_READ)
cr_flags |= MDS_FMODE_READ;
if (flags & FMODE_WRITE)
cr_flags |= MDS_FMODE_WRITE;
if (flags & O_CREAT)
cr_flags |= MDS_OPEN_CREAT;
if (flags & O_EXCL)
cr_flags |= MDS_OPEN_EXCL;
if (flags & O_TRUNC)
cr_flags |= MDS_OPEN_TRUNC;
if (flags & O_APPEND)
cr_flags |= MDS_OPEN_APPEND;
if (flags & O_SYNC)
cr_flags |= MDS_OPEN_SYNC;
if (flags & O_DIRECTORY)
cr_flags |= MDS_OPEN_DIRECTORY;
#ifdef FMODE_EXEC
if (flags & FMODE_EXEC)
cr_flags |= MDS_FMODE_EXEC;
#endif
if (cl_is_lov_delay_create(flags))
cr_flags |= MDS_OPEN_DELAY_CREATE;
if (flags & O_NONBLOCK)
cr_flags |= MDS_OPEN_NORESTORE;
return cr_flags;
}
/* packing of MDS records */
void mdc_open_pack(struct req_capsule *pill, struct md_op_data *op_data,
umode_t mode, __u64 rdev, __u64 flags, const void *lmm,
size_t lmmlen, struct sptlrpc_sepol *sepol)
{
struct mdt_rec_create *rec;
enum mds_open_flags cr_flags;
char *tmp;
BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
sizeof(struct mdt_rec_create));
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
/* XXX do something about time, uid, gid */
rec->cr_opcode = REINT_OPEN;
rec->cr_fsuid = from_kuid(&init_user_ns, current_fsuid());
rec->cr_fsgid = from_kgid(&init_user_ns, current_fsgid());
rec->cr_cap = ll_capability_u32(current_cap());
rec->cr_mode = mode;
cr_flags = mds_pack_open_flags(flags);
rec->cr_rdev = rdev;
rec->cr_umask = current_umask();
if (op_data != NULL) {
rec->cr_fid1 = op_data->op_fid1;
rec->cr_fid2 = op_data->op_fid2;
rec->cr_time = op_data->op_mod_time;
rec->cr_suppgid1 = op_data->op_suppgids[0];
rec->cr_suppgid2 = op_data->op_suppgids[1];
rec->cr_bias = op_data->op_bias;
rec->cr_open_handle_old = op_data->op_open_handle;
if (op_data->op_name) {
mdc_pack_name(pill, &RMF_NAME, op_data->op_name,
op_data->op_namelen);
if (op_data->op_bias & MDS_CREATE_VOLATILE)
cr_flags |= MDS_OPEN_VOLATILE;
}
mdc_file_secctx_pack(pill, op_data->op_file_secctx_name,
op_data->op_file_secctx,
op_data->op_file_secctx_size);
mdc_file_encctx_pack(pill, op_data->op_file_encctx,
op_data->op_file_encctx_size);
/* pack SELinux policy info if any */
mdc_file_sepol_pack(pill, sepol);
rec->cr_layout_ver = op_data->op_layout_version;
}
if (lmm) {
cr_flags |= MDS_OPEN_HAS_EA;
tmp = req_capsule_client_get(pill, &RMF_EADATA);
memcpy(tmp, lmm, lmmlen);
if (cr_flags & MDS_OPEN_PCC) {
LASSERT(op_data != NULL);
rec->cr_archive_id = op_data->op_archive_id;
}
}
cr_flags |= MDS_OPEN_DEFAULT_LMV;
set_mrc_cr_flags(rec, cr_flags);
}
static inline enum mds_attr_flags mdc_attr_pack(unsigned int ia_valid,
enum op_xvalid ia_xvalid)
{
enum mds_attr_flags sa_valid = 0;
if (ia_valid & ATTR_MODE)
sa_valid |= MDS_ATTR_MODE;
if (ia_valid & ATTR_UID)
sa_valid |= MDS_ATTR_UID;
if (ia_valid & ATTR_GID)
sa_valid |= MDS_ATTR_GID;
if (ia_valid & ATTR_SIZE)
sa_valid |= MDS_ATTR_SIZE;
if (ia_valid & ATTR_ATIME)
sa_valid |= MDS_ATTR_ATIME;
if (ia_valid & ATTR_MTIME)
sa_valid |= MDS_ATTR_MTIME;
if (ia_valid & ATTR_CTIME)
sa_valid |= MDS_ATTR_CTIME;
if (ia_valid & ATTR_ATIME_SET)
sa_valid |= MDS_ATTR_ATIME_SET;
if (ia_valid & ATTR_MTIME_SET)
sa_valid |= MDS_ATTR_MTIME_SET;
if (ia_valid & ATTR_FORCE)
sa_valid |= MDS_ATTR_FORCE;
if (ia_xvalid & OP_XVALID_FLAGS)
sa_valid |= MDS_ATTR_ATTR_FLAG;
if (ia_valid & ATTR_KILL_SUID)
sa_valid |= MDS_ATTR_KILL_SUID;
if (ia_valid & ATTR_KILL_SGID)
sa_valid |= MDS_ATTR_KILL_SGID;
if (ia_valid & ATTR_CTIME_SET)
sa_valid |= MDS_ATTR_CTIME_SET;
if (ia_valid & ATTR_OPEN)
sa_valid |= MDS_ATTR_FROM_OPEN;
if (ia_xvalid & OP_XVALID_BLOCKS)
sa_valid |= MDS_ATTR_BLOCKS;
if (ia_xvalid & OP_XVALID_OWNEROVERRIDE)
/* NFSD hack (see bug 5781) */
sa_valid |= MDS_OPEN_OWNEROVERRIDE;
if (ia_xvalid & OP_XVALID_PROJID)
sa_valid |= MDS_ATTR_PROJID;
if (ia_xvalid & OP_XVALID_LAZYSIZE)
sa_valid |= MDS_ATTR_LSIZE;
if (ia_xvalid & OP_XVALID_LAZYBLOCKS)
sa_valid |= MDS_ATTR_LBLOCKS;
return sa_valid;
}
static void mdc_setattr_pack_rec(struct mdt_rec_setattr *rec,
struct md_op_data *op_data)
{
rec->sa_opcode = REINT_SETATTR;
rec->sa_fsuid = from_kuid(&init_user_ns, current_fsuid());
rec->sa_fsgid = from_kgid(&init_user_ns, current_fsgid());
rec->sa_cap = ll_capability_u32(current_cap());
rec->sa_suppgid = -1;
rec->sa_fid = op_data->op_fid1;
rec->sa_valid = mdc_attr_pack(op_data->op_attr.ia_valid,
op_data->op_xvalid);
rec->sa_mode = op_data->op_attr.ia_mode;
rec->sa_uid = from_kuid(&init_user_ns, op_data->op_attr.ia_uid);
rec->sa_gid = from_kgid(&init_user_ns, op_data->op_attr.ia_gid);
rec->sa_projid = op_data->op_projid;
rec->sa_size = op_data->op_attr.ia_size;
rec->sa_blocks = op_data->op_attr_blocks;
rec->sa_atime = op_data->op_attr.ia_atime.tv_sec;
rec->sa_mtime = op_data->op_attr.ia_mtime.tv_sec;
rec->sa_ctime = op_data->op_attr.ia_ctime.tv_sec;
rec->sa_attr_flags = op_data->op_attr_flags;
if ((op_data->op_attr.ia_valid & ATTR_GID) &&
in_group_p(op_data->op_attr.ia_gid))
rec->sa_suppgid =
from_kgid(&init_user_ns, op_data->op_attr.ia_gid);
else
rec->sa_suppgid = op_data->op_suppgids[0];
rec->sa_bias = op_data->op_bias;
}
static void mdc_ioepoch_pack(struct mdt_ioepoch *epoch,
struct md_op_data *op_data)
{
epoch->mio_open_handle = op_data->op_open_handle;
epoch->mio_unused1 = 0;
epoch->mio_unused2 = 0;
epoch->mio_padding = 0;
}
void mdc_setattr_pack(struct req_capsule *pill, struct md_op_data *op_data,
void *ea, size_t ealen)
{
struct mdt_rec_setattr *rec;
struct lov_user_md *lum = NULL;
BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
sizeof(struct mdt_rec_setattr));
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
mdc_setattr_pack_rec(rec, op_data);
if (ealen == 0)
return;
lum = req_capsule_client_get(pill, &RMF_EADATA);
if (ea == NULL) { /* Remove LOV EA */
lum->lmm_magic = cpu_to_le32(LOV_USER_MAGIC_V1);
lum->lmm_stripe_size = 0;
lum->lmm_stripe_count = 0;
lum->lmm_stripe_offset =
(typeof(lum->lmm_stripe_offset))LOV_OFFSET_DEFAULT;
} else {
memcpy(lum, ea, ealen);
}
}
void mdc_unlink_pack(struct req_capsule *pill, struct md_op_data *op_data,
struct sptlrpc_sepol *sepol)
{
struct mdt_rec_unlink *rec;
BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
sizeof(struct mdt_rec_unlink));
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
LASSERT(rec != NULL);
rec->ul_opcode = op_data->op_cli_flags & CLI_RM_ENTRY ?
REINT_RMENTRY : REINT_UNLINK;
rec->ul_fsuid = op_data->op_fsuid;
rec->ul_fsgid = op_data->op_fsgid;
rec->ul_cap = ll_capability_u32(op_data->op_cap);
rec->ul_mode = op_data->op_mode;
rec->ul_suppgid1 = op_data->op_suppgids[0];
rec->ul_suppgid2 = -1;
rec->ul_fid1 = op_data->op_fid1;
rec->ul_fid2 = op_data->op_fid2;
rec->ul_time = op_data->op_mod_time;
rec->ul_bias = op_data->op_bias;
mdc_pack_name(pill, &RMF_NAME, op_data->op_name, op_data->op_namelen);
/* pack SELinux policy info if any */
mdc_file_sepol_pack(pill, sepol);
}
void mdc_link_pack(struct req_capsule *pill, struct md_op_data *op_data,
struct sptlrpc_sepol *sepol)
{
struct mdt_rec_link *rec;
BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
sizeof(struct mdt_rec_link));
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
LASSERT(rec != NULL);
rec->lk_opcode = REINT_LINK;
rec->lk_fsuid = op_data->op_fsuid; /* current->fsuid; */
rec->lk_fsgid = op_data->op_fsgid; /* current->fsgid; */
rec->lk_cap = ll_capability_u32(op_data->op_cap);
rec->lk_suppgid1 = op_data->op_suppgids[0];
rec->lk_suppgid2 = op_data->op_suppgids[1];
rec->lk_fid1 = op_data->op_fid1;
rec->lk_fid2 = op_data->op_fid2;
rec->lk_time = op_data->op_mod_time;
rec->lk_bias = op_data->op_bias;
mdc_pack_name(pill, &RMF_NAME, op_data->op_name, op_data->op_namelen);
/* pack SELinux policy info if any */
mdc_file_sepol_pack(pill, sepol);
}
static void mdc_close_intent_pack(struct req_capsule *pill,
struct md_op_data *op_data)
{
struct close_data *data;
struct ldlm_lock *lock;
enum mds_op_bias bias = op_data->op_bias;
if (!(bias & (MDS_CLOSE_INTENT | MDS_CLOSE_MIGRATE)))
return;
data = req_capsule_client_get(pill, &RMF_CLOSE_DATA);
LASSERT(data != NULL);
lock = ldlm_handle2lock(&op_data->op_lease_handle);
if (lock != NULL) {
data->cd_handle = lock->l_remote_handle;
ldlm_lock_put(lock);
}
ldlm_cli_cancel(&op_data->op_lease_handle, LCF_LOCAL);
data->cd_data_version = op_data->op_data_version;
data->cd_fid = op_data->op_fid2;
if (bias & MDS_CLOSE_LAYOUT_SPLIT) {
data->cd_mirror_id = op_data->op_mirror_id;
} else if (bias & MDS_CLOSE_RESYNC_DONE) {
struct close_data_resync_done *sync = &data->cd_resync;
BUILD_BUG_ON(sizeof(data->cd_resync) >
sizeof(data->cd_reserved));
sync->resync_count = op_data->op_data_size / sizeof(__u32);
if (sync->resync_count <= INLINE_RESYNC_ARRAY_SIZE) {
memcpy(sync->resync_ids_inline, op_data->op_data,
op_data->op_data_size);
} else {
size_t count = sync->resync_count;
memcpy(req_capsule_client_get(pill, &RMF_U32),
op_data->op_data, count * sizeof(__u32));
}
} else if (bias & MDS_PCC_ATTACH) {
data->cd_archive_id = op_data->op_archive_id;
} else if (bias & MDS_CLOSE_LAYOUT_SWAP) {
data->cd_data_version2 = op_data->op_data_version2;
}
}
void mdc_rename_pack(struct req_capsule *pill, struct md_op_data *op_data,
const char *old, size_t oldlen,
const char *new, size_t newlen,
struct sptlrpc_sepol *sepol)
{
struct mdt_rec_rename *rec;
BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
sizeof(struct mdt_rec_rename));
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
/* XXX do something about time, uid, gid */
rec->rn_opcode = REINT_RENAME;
rec->rn_fsuid = op_data->op_fsuid;
rec->rn_fsgid = op_data->op_fsgid;
rec->rn_cap = ll_capability_u32(op_data->op_cap);
rec->rn_suppgid1 = op_data->op_suppgids[0];
rec->rn_suppgid2 = op_data->op_suppgids[1];
rec->rn_fid1 = op_data->op_fid1;
rec->rn_fid2 = op_data->op_fid2;
rec->rn_time = op_data->op_mod_time;
rec->rn_mode = op_data->op_mode;
rec->rn_bias = op_data->op_bias;
mdc_pack_name(pill, &RMF_NAME, old, oldlen);
if (new != NULL)
mdc_pack_name(pill, &RMF_SYMTGT, new, newlen);
/* pack SELinux policy info if any */
mdc_file_sepol_pack(pill, sepol);
}
void mdc_migrate_pack(struct req_capsule *pill, struct md_op_data *op_data,
const char *name, size_t namelen)
{
struct mdt_rec_rename *rec;
char *ea;
BUILD_BUG_ON(sizeof(struct mdt_rec_reint) !=
sizeof(struct mdt_rec_rename));
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
rec->rn_opcode = REINT_MIGRATE;
rec->rn_fsuid = op_data->op_fsuid;
rec->rn_fsgid = op_data->op_fsgid;
rec->rn_cap = ll_capability_u32(op_data->op_cap);
rec->rn_suppgid1 = op_data->op_suppgids[0];
rec->rn_suppgid2 = op_data->op_suppgids[1];
rec->rn_fid1 = op_data->op_fid1;
rec->rn_fid2 = op_data->op_fid4;
rec->rn_time = op_data->op_mod_time;
rec->rn_mode = op_data->op_mode;
rec->rn_bias = op_data->op_bias;
mdc_pack_name(pill, &RMF_NAME, name, namelen);
if (op_data->op_bias & MDS_CLOSE_MIGRATE) {
struct mdt_ioepoch *epoch;
mdc_close_intent_pack(pill, op_data);
epoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
mdc_ioepoch_pack(epoch, op_data);
}
ea = req_capsule_client_get(pill, &RMF_EADATA);
memcpy(ea, op_data->op_data, op_data->op_data_size);
}
void mdc_getattr_pack(struct req_capsule *pill, __u64 valid, __u32 flags,
struct md_op_data *op_data, size_t ea_size)
{
struct mdt_body *b = req_capsule_client_get(pill, &RMF_MDT_BODY);
b->mbo_valid = valid;
if (op_data->op_bias & MDS_CROSS_REF)
b->mbo_valid |= OBD_MD_FLCROSSREF;
if (op_data->op_bias & MDS_NAMEHASH)
b->mbo_valid |= OBD_MD_NAMEHASH;
b->mbo_eadatasize = ea_size;
b->mbo_flags = flags;
__mdc_pack_body(b, op_data->op_suppgids[0]);
b->mbo_fid1 = op_data->op_fid1;
b->mbo_fid2 = op_data->op_fid2;
b->mbo_valid |= OBD_MD_FLID;
if (op_data->op_name != NULL)
mdc_pack_name(pill, &RMF_NAME, op_data->op_name,
op_data->op_namelen);
}
void mdc_close_pack(struct req_capsule *pill, struct md_op_data *op_data)
{
struct mdt_ioepoch *epoch;
struct mdt_rec_setattr *rec;
epoch = req_capsule_client_get(pill, &RMF_MDT_EPOCH);
rec = req_capsule_client_get(pill, &RMF_REC_REINT);
mdc_setattr_pack_rec(rec, op_data);
/*
* The client will zero out local timestamps when losing the IBITS lock
* so any new RPC timestamps will update the client inode's timestamps.
* There was a defect on the server side which allowed the atime to be
* overwritten by a zeroed-out atime packed into the close RPC.
*
* Proactively clear the MDS_ATTR_ATIME flag in the RPC in this case
* to avoid zeroing the atime on old unpatched servers. See LU-8041.
*/
if (rec->sa_atime == 0)
rec->sa_valid &= ~MDS_ATTR_ATIME;
mdc_ioepoch_pack(epoch, op_data);
mdc_close_intent_pack(pill, op_data);
}
