Viewing: out_lib.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2014, 2017, Intel Corporation.
*/
/*
* Author: Di Wang <di.wang@intel.com>
* Author: Fan, Yong <fan.yong@intel.com>
*/
#define DEBUG_SUBSYSTEM S_CLASS
#include <lu_target.h>
#include <lustre_obdo.h>
#include <lustre_update.h>
#include <md_object.h>
#include <obd.h>
#include <obd_class.h>
#include <lustre_linkea.h>
#include "tgt_internal.h"
const char *update_op_str(__u16 opc)
{
static const char *const opc_str[] = {
[OUT_START] = "start",
[OUT_CREATE] = "create",
[OUT_DESTROY] = "destroy",
[OUT_REF_ADD] = "ref_add",
[OUT_REF_DEL] = "ref_del",
[OUT_ATTR_SET] = "attr_set",
[OUT_ATTR_GET] = "attr_get",
[OUT_XATTR_SET] = "xattr_set",
[OUT_XATTR_GET] = "xattr_get",
[OUT_XATTR_LIST] = "xattr_list",
[OUT_INDEX_LOOKUP] = "lookup",
[OUT_INDEX_INSERT] = "insert",
[OUT_INDEX_DELETE] = "delete",
[OUT_WRITE] = "write",
[OUT_XATTR_DEL] = "xattr_del",
[OUT_PUNCH] = "punch",
[OUT_READ] = "read",
[OUT_NOOP] = "noop",
};
if (opc < ARRAY_SIZE(opc_str) && opc_str[opc] != NULL)
return opc_str[opc];
else
return "unknown";
}
EXPORT_SYMBOL(update_op_str);
/**
* out_update_header_pack() - Fill object update header
* @env: execution environment
* @update: object update to be filled
* @max_update_size: maximum object update size, if the current update length
* equals or exceeds the size, it will return -E2BIG. [in,out]
* @update_op: update type
* @fid: object FID of the update
* @param_count: the count of the update parameters
* @param_sizes: the length of each parameters
* @reply_size: Reply size
*
* Only fill the object update header, and parameters will be filled later
* in other functions.
*
* Return:
* * %0 if packing succeeds.
* * %-E2BIG if packing exceeds the maximum length.
*/
static int out_update_header_pack(const struct lu_env *env,
struct object_update *update,
size_t *max_update_size,
enum update_type update_op,
const struct lu_fid *fid,
unsigned int param_count,
__u16 *param_sizes,
__u32 reply_size)
{
struct object_update_param *param;
unsigned int i;
size_t update_size;
if (reply_size >= LNET_MTU)
return -EINVAL;
/* Check whether the packing exceeding the maxima update length */
update_size = sizeof(*update);
for (i = 0; i < param_count; i++)
update_size += round_up(sizeof(*param) + param_sizes[i], 8);
if (unlikely(update_size >= *max_update_size)) {
*max_update_size = update_size;
return -E2BIG;
}
update->ou_fid = *fid;
update->ou_type = update_op;
update->ou_params_count = param_count;
update->ou_result_size = reply_size;
param = &update->ou_params[0];
for (i = 0; i < param_count; i++) {
param->oup_len = param_sizes[i];
param = (struct object_update_param *)((char *)param +
object_update_param_size(param));
}
return 0;
}
/**
* out_update_pack() - Packs one update into the update_buffer.
* @env: execution environment
* @update: update to be packed
* @max_update_size: *maximum size of @update
* @op: update operation (enum update_type)
* @fid: object FID for this update
* @param_count: number of parameters for this update
* @param_sizes: array of parameters length of this update
* @param_bufs: parameter buffers
* @reply_size: Reply size
*
* Return:
* * %0 if updates packing succeeds
* * %negative errno if updates packing fails
*/
int out_update_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, enum update_type op,
const struct lu_fid *fid, unsigned int param_count,
__u16 *param_sizes, const void **param_bufs,
__u32 reply_size)
{
struct object_update_param *param;
unsigned int i;
int rc;
ENTRY;
rc = out_update_header_pack(env, update, max_update_size, op, fid,
param_count, param_sizes, reply_size);
if (rc != 0)
RETURN(rc);
param = &update->ou_params[0];
for (i = 0; i < param_count; i++) {
memcpy(¶m->oup_buf[0], param_bufs[i], param_sizes[i]);
param = (struct object_update_param *)((char *)param +
object_update_param_size(param));
}
RETURN(0);
}
EXPORT_SYMBOL(out_update_pack);
/**
* out_create_pack() - Pack various updates into the update_buffer.
* @env: execution environment
* @update: update to be packed
* @max_update_size: maximum size of @update
* @fid: fid of this object for the update
* @attr: attributes (lu_attr) for the new object
* @hint: allocation hints
* @dof: object format specifier
*
* The following functions pack different updates into the update_buffer
* So parameters of these API is basically same as its correspondent OSD/OSP
* API, for detail description of these parameters see osd_handler.c or
* osp_md_object.c.
*
* Return:
* * %0 if insertion succeeds.
* * %negative errno if insertion fails.
*/
int out_create_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const struct lu_attr *attr, struct dt_allocation_hint *hint,
struct dt_object_format *dof)
{
struct obdo *obdo;
__u16 sizes[2] = {sizeof(*obdo), 0};
int buf_count = 1;
const struct lu_fid *parent_fid = NULL;
int rc;
ENTRY;
if (hint != NULL && hint->dah_parent) {
parent_fid = lu_object_fid(&hint->dah_parent->do_lu);
sizes[1] = sizeof(*parent_fid);
buf_count++;
}
rc = out_update_header_pack(env, update, max_update_size, OUT_CREATE,
fid, buf_count, sizes, 0);
if (rc != 0)
RETURN(rc);
obdo = object_update_param_get(update, 0, NULL, NULL, NULL);
if (IS_ERR(obdo))
RETURN(PTR_ERR(obdo));
obdo->o_valid = 0;
obdo_from_la(obdo, attr, attr->la_valid);
if (parent_fid != NULL) {
struct lu_fid *tmp;
tmp = object_update_param_get(update, 1, NULL, NULL, NULL);
if (IS_ERR(tmp))
RETURN(PTR_ERR(tmp));
fid_cpu_to_le(tmp, parent_fid);
}
RETURN(0);
}
EXPORT_SYMBOL(out_create_pack);
int out_ref_del_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid)
{
return out_update_pack(env, update, max_update_size, OUT_REF_DEL, fid,
0, NULL, NULL, 0);
}
EXPORT_SYMBOL(out_ref_del_pack);
int out_ref_add_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid)
{
return out_update_pack(env, update, max_update_size, OUT_REF_ADD, fid,
0, NULL, NULL, 0);
}
EXPORT_SYMBOL(out_ref_add_pack);
int out_attr_set_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const struct lu_attr *attr)
{
struct obdo *obdo;
__u16 size = sizeof(*obdo);
int rc;
ENTRY;
rc = out_update_header_pack(env, update, max_update_size,
OUT_ATTR_SET, fid, 1, &size, 0);
if (rc != 0)
RETURN(rc);
obdo = object_update_param_get(update, 0, NULL, NULL, NULL);
if (IS_ERR(obdo))
RETURN(PTR_ERR(obdo));
obdo->o_valid = 0;
obdo_from_la(obdo, attr, attr->la_valid);
RETURN(0);
}
EXPORT_SYMBOL(out_attr_set_pack);
int out_xattr_set_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const struct lu_buf *buf, const char *name, __u32 flag)
{
__u16 sizes[3] = {strlen(name) + 1, buf->lb_len, sizeof(flag)};
const void *bufs[3] = {(char *)name, (char *)buf->lb_buf,
(char *)&flag};
return out_update_pack(env, update, max_update_size, OUT_XATTR_SET,
fid, ARRAY_SIZE(sizes), sizes, bufs, 0);
}
EXPORT_SYMBOL(out_xattr_set_pack);
int out_xattr_del_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const char *name)
{
__u16 size = strlen(name) + 1;
return out_update_pack(env, update, max_update_size, OUT_XATTR_DEL,
fid, 1, &size, (const void **)&name, 0);
}
EXPORT_SYMBOL(out_xattr_del_pack);
int out_index_insert_pack(const struct lu_env *env,
struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const struct dt_rec *rec, const struct dt_key *key)
{
struct dt_insert_rec *rec1 = (struct dt_insert_rec *)rec;
struct lu_fid rec_fid;
__u32 type = cpu_to_le32(rec1->rec_type);
__u16 sizes[3] = { strlen((char *)key) + 1,
sizeof(rec_fid),
sizeof(type) };
const void *bufs[3] = { (char *)key,
(char *)&rec_fid,
(char *)&type };
fid_cpu_to_le(&rec_fid, rec1->rec_fid);
return out_update_pack(env, update, max_update_size, OUT_INDEX_INSERT,
fid, ARRAY_SIZE(sizes), sizes, bufs, 0);
}
EXPORT_SYMBOL(out_index_insert_pack);
int out_index_delete_pack(const struct lu_env *env,
struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const struct dt_key *key)
{
__u16 size = strlen((char *)key) + 1;
const void *buf = key;
return out_update_pack(env, update, max_update_size, OUT_INDEX_DELETE,
fid, 1, &size, &buf, 0);
}
EXPORT_SYMBOL(out_index_delete_pack);
int out_destroy_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid)
{
return out_update_pack(env, update, max_update_size, OUT_DESTROY, fid,
0, NULL, NULL, 0);
}
EXPORT_SYMBOL(out_destroy_pack);
int out_write_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const struct lu_buf *buf, __u64 pos)
{
__u16 sizes[2] = {buf->lb_len, sizeof(pos)};
const void *bufs[2] = {(char *)buf->lb_buf, (char *)&pos};
int rc;
pos = cpu_to_le64(pos);
rc = out_update_pack(env, update, max_update_size, OUT_WRITE, fid,
ARRAY_SIZE(sizes), sizes, bufs, 0);
return rc;
}
EXPORT_SYMBOL(out_write_pack);
/**
* out_index_lookup_pack() - Pack various readonly updates into update_buffer.
* @env: execution environment
* @update: update to be packed
* @max_update_size: maximum size of @update
* @fid: fid of this object for the update
* @rec: pointer to a dt_rec struct
* @key: key of the sub-object lookup
*
* The following update funcs are only used by read-only ops, lookup,
* getattr etc, so it does not need transaction here. Currently they
* are only used by OSP.
*
* Return:
* * %0 if packing succeeds.
* * %negative if packing fails
*/
int out_index_lookup_pack(const struct lu_env *env,
struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
struct dt_rec *rec, const struct dt_key *key)
{
const void *name = key;
__u16 size = strlen((char *)name) + 1;
/* XXX: this shouldn't be hardcoded */
return out_update_pack(env, update, max_update_size, OUT_INDEX_LOOKUP,
fid, 1, &size, &name, 256);
}
EXPORT_SYMBOL(out_index_lookup_pack);
int out_attr_get_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid)
{
return out_update_pack(env, update, max_update_size, OUT_ATTR_GET,
fid, 0, NULL, NULL, sizeof(struct obdo));
}
EXPORT_SYMBOL(out_attr_get_pack);
int out_xattr_get_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const char *name, const int bufsize)
{
__u16 size;
LASSERT(name != NULL);
size = strlen(name) + 1;
return out_update_pack(env, update, max_update_size, OUT_XATTR_GET,
fid, 1, &size, (const void **)&name, bufsize);
}
EXPORT_SYMBOL(out_xattr_get_pack);
int out_xattr_list_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
const int bufsize)
{
return out_update_pack(env, update, max_update_size, OUT_XATTR_LIST,
fid, 0, NULL, NULL, bufsize);
}
EXPORT_SYMBOL(out_xattr_list_pack);
int out_read_pack(const struct lu_env *env, struct object_update *update,
size_t *max_update_size, const struct lu_fid *fid,
size_t size, loff_t pos)
{
__u16 sizes[2] = {sizeof(size), sizeof(pos)};
const void *bufs[2] = {&size, &pos};
LASSERT(size > 0);
size = cpu_to_le64(size);
pos = cpu_to_le64(pos);
return out_update_pack(env, update, max_update_size, OUT_READ, fid,
ARRAY_SIZE(sizes), sizes, bufs, size);
}
EXPORT_SYMBOL(out_read_pack);
static int tx_extend_args(struct thandle_exec_args *ta, int new_alloc_ta)
{
struct tx_arg **new_ta;
int i;
int rc = 0;
if (ta->ta_alloc_args >= new_alloc_ta)
return 0;
OBD_ALLOC_PTR_ARRAY(new_ta, new_alloc_ta);
if (new_ta == NULL)
return -ENOMEM;
for (i = 0; i < new_alloc_ta; i++) {
if (i < ta->ta_alloc_args) {
/* copy the old args to new one */
new_ta[i] = ta->ta_args[i];
} else {
OBD_ALLOC_PTR(new_ta[i]);
if (new_ta[i] == NULL)
GOTO(out, rc = -ENOMEM);
}
}
/* free the old args */
if (ta->ta_args != NULL)
OBD_FREE_PTR_ARRAY(ta->ta_args, ta->ta_alloc_args);
ta->ta_args = new_ta;
ta->ta_alloc_args = new_alloc_ta;
out:
if (rc != 0) {
for (i = 0; i < new_alloc_ta; i++) {
OBD_FREE_PTR(new_ta[i]);
}
OBD_FREE_PTR_ARRAY(new_ta, new_alloc_ta);
}
return rc;
}
#define TX_ALLOC_STEP 8
struct tx_arg *tx_add_exec(struct thandle_exec_args *ta,
tx_exec_func_t func, tx_exec_func_t undo,
const char *file, int line)
{
int rc;
int i;
LASSERT(ta != NULL);
LASSERT(func != NULL);
if (ta->ta_argno + 1 >= ta->ta_alloc_args) {
rc = tx_extend_args(ta, ta->ta_alloc_args + TX_ALLOC_STEP);
if (rc != 0)
return ERR_PTR(rc);
}
i = ta->ta_argno;
ta->ta_argno++;
ta->ta_args[i]->exec_fn = func;
ta->ta_args[i]->undo_fn = undo;
ta->ta_args[i]->file = file;
ta->ta_args[i]->line = line;
return ta->ta_args[i];
}
static int out_obj_destroy(const struct lu_env *env, struct dt_object *dt_obj,
struct thandle *th)
{
int rc;
CDEBUG(D_INFO, "%s: destroy "DFID"\n", dt_obd_name(th->th_dev),
PFID(lu_object_fid(&dt_obj->do_lu)));
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_destroy(env, dt_obj, th);
dt_write_unlock(env, dt_obj);
return rc;
}
/*
* All of the xxx_undo will be used once execution failed,
* But because all of the required resource has been reserved in
* declare phase, i.e. if declare succeed, it should make sure
* the following executing phase succeed in anyway, so these undo
* should be useless for most of the time in Phase I
*/
static int out_tx_create_undo(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
int rc;
rc = out_obj_destroy(env, arg->object, th);
if (rc != 0)
CERROR("%s: undo failure, we are doomed!: rc = %d\n",
dt_obd_name(th->th_dev), rc);
return rc;
}
int out_tx_create_exec(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
CDEBUG(D_OTHER, "%s: create "DFID": dof %u, mode %o\n",
dt_obd_name(th->th_dev),
PFID(lu_object_fid(&arg->object->do_lu)),
arg->u.create.dof.dof_type,
arg->u.create.attr.la_mode & S_IFMT);
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_create(env, dt_obj, &arg->u.create.attr,
&arg->u.create.hint, &arg->u.create.dof, th);
dt_write_unlock(env, dt_obj);
CDEBUG(D_INFO, "%s: insert create reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
return rc;
}
/**
* out_create_add_exec() - Add create update to thandle
* @env: execution environment
* @obj: object to be created
* @attr: attributes of the creation
* @parent_fid: the fid of the parent
* @dof: dt object format of the creation
* @ta: thandle execuation args where all of updates of the transaction are stored
* @th: thandle for this update
* @reply: reply of the updates
* @index: index of the reply
* @file: file name where the function is called (only for debugging purpose)
* @line: line number where the funtion is called (only for debugging purpose)
*
* Declare create updates and add the update to the thandle updates
* exec array.
*
* Return:
* * %0 if updates is added successfully.
* * %negative errno if update adding fails.
*/
int out_create_add_exec(const struct lu_env *env, struct dt_object *obj,
struct lu_attr *attr, struct lu_fid *parent_fid,
struct dt_object_format *dof,
struct thandle_exec_args *ta,
struct thandle *th,
struct object_update_reply *reply,
int index, const char *file, int line)
{
struct tx_arg *arg;
int rc;
/* LU-13653: ignore quota for DNE directory creation */
if (dof->dof_type == DFT_DIR)
th->th_ignore_quota = 1;
rc = dt_declare_create(env, obj, attr, NULL, dof, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_create_exec, out_tx_create_undo, file,
line);
if (IS_ERR(arg))
return PTR_ERR(arg);
/* release the object in out_trans_stop */
lu_object_get(&obj->do_lu);
arg->object = obj;
arg->u.create.attr = *attr;
if (parent_fid != NULL)
arg->u.create.fid = *parent_fid;
memset(&arg->u.create.hint, 0, sizeof(arg->u.create.hint));
arg->u.create.dof = *dof;
arg->reply = reply;
arg->index = index;
return 0;
}
static int out_tx_attr_set_undo(const struct lu_env *env,
struct thandle *th, struct tx_arg *arg)
{
CERROR("%s: attr set undo "DFID" unimplemented yet!: rc = %d\n",
dt_obd_name(th->th_dev),
PFID(lu_object_fid(&arg->object->do_lu)), -ENOTSUPP);
return -ENOTSUPP;
}
static int out_tx_attr_set_exec(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
CDEBUG(D_OTHER, "%s: attr set "DFID"\n", dt_obd_name(th->th_dev),
PFID(lu_object_fid(&dt_obj->do_lu)));
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_attr_set(env, dt_obj, &arg->u.attr_set.attr, th);
dt_write_unlock(env, dt_obj);
CDEBUG(D_INFO, "%s: insert attr_set reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0,
arg->index, rc);
return rc;
}
int out_attr_set_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
const struct lu_attr *attr,
struct thandle_exec_args *ta,
struct thandle *th, struct object_update_reply *reply,
int index, const char *file, int line)
{
struct tx_arg *arg;
int rc;
rc = dt_declare_attr_set(env, dt_obj, attr, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_attr_set_exec, out_tx_attr_set_undo,
file, line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->u.attr_set.attr = *attr;
arg->reply = reply;
arg->index = index;
return 0;
}
static int out_tx_write_exec(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
CDEBUG(D_INFO, "write "DFID" pos %llu buf %p, len %lu\n",
PFID(lu_object_fid(&dt_obj->do_lu)), arg->u.write.pos,
arg->u.write.buf.lb_buf, (unsigned long)arg->u.write.buf.lb_len);
if (CFS_FAIL_CHECK(OBD_FAIL_OUT_ENOSPC)) {
rc = -ENOSPC;
} else {
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_record_write(env, dt_obj, &arg->u.write.buf,
&arg->u.write.pos, th);
dt_write_unlock(env, dt_obj);
if (rc == 0)
rc = arg->u.write.buf.lb_len;
}
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc < 0 ? rc : 0);
return rc > 0 ? 0 : rc;
}
int out_write_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
const struct lu_buf *buf, loff_t pos,
struct thandle_exec_args *ta, struct thandle *th,
struct object_update_reply *reply, int index,
const char *file, int line)
{
struct tx_arg *arg;
int rc;
rc = dt_declare_record_write(env, dt_obj, buf, pos, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_write_exec, NULL, file, line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->u.write.buf = *buf;
arg->u.write.pos = pos;
arg->reply = reply;
arg->index = index;
return 0;
}
static int out_tx_xattr_set_exec(const struct lu_env *env,
struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
ENTRY;
CDEBUG(D_INFO, "%s: set xattr buf %p name %s flag %d\n",
dt_obd_name(th->th_dev), arg->u.xattr_set.buf.lb_buf,
arg->u.xattr_set.name, arg->u.xattr_set.flags);
if (!lu_object_exists(&dt_obj->do_lu) ||
CFS_FAIL_PRECHECK(OBD_FAIL_OUT_OBJECT_MISS)) {
rc = -ENOENT;
} else {
struct linkea_data ldata = { 0 };
bool linkea;
ldata.ld_buf = &arg->u.xattr_set.buf;
if (strcmp(arg->u.xattr_set.name, XATTR_NAME_LINK) == 0) {
struct link_ea_header *leh;
linkea = true;
rc = linkea_init(&ldata);
if (unlikely(rc))
GOTO(out, rc == -ENODATA ? -EINVAL : rc);
leh = ldata.ld_leh;
LASSERT(leh != NULL);
/* If the new linkEA contains overflow timestamp,
* then two cases:
*
* 1. The old linkEA for the object has already
* overflowed before current setting, the new
* linkEA does not contains new link entry. So
* the linkEA overflow timestamp is unchanged.
*
* 2. There are new link entry in the new linkEA,
* so its overflow timestamp is differnt from
* the old one. Usually, the overstamp in the
* given linkEA is newer. But because of clock
* drift among MDTs, the timestamp may become
* older. So here, we convert the timestamp to
* the server local time. Then namespace LFSCK
* that uses local time can handle it easily. */
if (unlikely(leh->leh_overflow_time)) {
struct lu_buf tbuf = { 0 };
bool update = false;
lu_buf_alloc(&tbuf, MAX_LINKEA_SIZE);
if (tbuf.lb_buf == NULL)
GOTO(unlock, rc = -ENOMEM);
rc = dt_xattr_get(env, dt_obj, &tbuf,
XATTR_NAME_LINK);
if (rc > 0) {
struct linkea_data tdata = { 0 };
tdata.ld_buf = &tbuf;
rc = linkea_init(&tdata);
if (rc || leh->leh_overflow_time !=
tdata.ld_leh->leh_overflow_time)
update = true;
} else {
/* Update the timestamp by force if
* fail to load the old linkEA. */
update = true;
}
lu_buf_free(&tbuf);
if (update) {
leh->leh_overflow_time = ktime_get_real_seconds();
if (unlikely(!leh->leh_overflow_time))
leh->leh_overflow_time++;
}
}
} else {
linkea = false;
}
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
again:
rc = dt_xattr_set(env, dt_obj, ldata.ld_buf,
arg->u.xattr_set.name, arg->u.xattr_set.flags,
th);
if (unlikely(rc == -ENOSPC && linkea)) {
rc = linkea_overflow_shrink(&ldata);
if (likely(rc > 0)) {
arg->u.xattr_set.buf.lb_len = rc;
goto again;
}
}
unlock:
dt_write_unlock(env, dt_obj);
}
GOTO(out, rc);
out:
CDEBUG(D_INFO, "%s: insert xattr set reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
return rc;
}
int out_xattr_set_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
const struct lu_buf *buf, const char *name,
int flags, struct thandle_exec_args *ta,
struct thandle *th,
struct object_update_reply *reply,
int index, const char *file, int line)
{
struct tx_arg *arg;
int rc;
rc = dt_declare_xattr_set(env, dt_obj, NULL, buf, name, flags, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_xattr_set_exec, NULL, file, line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->u.xattr_set.name = name;
arg->u.xattr_set.flags = flags;
arg->u.xattr_set.buf = *buf;
arg->reply = reply;
arg->index = index;
arg->u.xattr_set.csum = 0;
return 0;
}
static int out_tx_xattr_del_exec(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
CDEBUG(D_INFO, "%s: del xattr name '%s' on "DFID"\n",
dt_obd_name(th->th_dev), arg->u.xattr_set.name,
PFID(lu_object_fid(&dt_obj->do_lu)));
if (!lu_object_exists(&dt_obj->do_lu))
GOTO(out, rc = -ENOENT);
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_xattr_del(env, dt_obj, arg->u.xattr_set.name,
th);
dt_write_unlock(env, dt_obj);
out:
CDEBUG(D_INFO, "%s: insert xattr del reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
return rc;
}
int out_xattr_del_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
const char *name, struct thandle_exec_args *ta,
struct thandle *th,
struct object_update_reply *reply, int index,
const char *file, int line)
{
struct tx_arg *arg;
int rc;
rc = dt_declare_xattr_del(env, dt_obj, name, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_xattr_del_exec, NULL, file, line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->u.xattr_set.name = name;
arg->reply = reply;
arg->index = index;
return 0;
}
static int out_obj_ref_add(const struct lu_env *env,
struct dt_object *dt_obj,
struct thandle *th)
{
int rc;
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_ref_add(env, dt_obj, th);
dt_write_unlock(env, dt_obj);
return rc;
}
static int out_obj_ref_del(const struct lu_env *env,
struct dt_object *dt_obj,
struct thandle *th)
{
int rc;
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_ref_del(env, dt_obj, th);
dt_write_unlock(env, dt_obj);
return rc;
}
static int out_tx_ref_add_exec(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
rc = out_obj_ref_add(env, dt_obj, th);
CDEBUG(D_INFO, "%s: insert ref_add reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
return rc;
}
static int out_tx_ref_add_undo(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
return out_obj_ref_del(env, arg->object, th);
}
int out_ref_add_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
struct thandle_exec_args *ta,
struct thandle *th,
struct object_update_reply *reply, int index,
const char *file, int line)
{
struct tx_arg *arg;
int rc;
rc = dt_declare_ref_add(env, dt_obj, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_ref_add_exec, out_tx_ref_add_undo, file,
line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->reply = reply;
arg->index = index;
return 0;
}
static int out_tx_ref_del_exec(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
rc = out_obj_ref_del(env, dt_obj, th);
CDEBUG(D_INFO, "%s: insert ref_del reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, 0);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
return rc;
}
static int out_tx_ref_del_undo(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
return out_obj_ref_add(env, arg->object, th);
}
int out_ref_del_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
struct thandle_exec_args *ta,
struct thandle *th,
struct object_update_reply *reply, int index,
const char *file, int line)
{
struct tx_arg *arg;
int rc;
rc = dt_declare_ref_del(env, dt_obj, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_ref_del_exec, out_tx_ref_del_undo, file,
line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->reply = reply;
arg->index = index;
return 0;
}
static int out_obj_index_insert(const struct lu_env *env,
struct dt_object *dt_obj,
const struct dt_rec *rec,
const struct dt_key *key,
struct thandle *th)
{
int rc;
CDEBUG(D_INFO, "%s: index insert "DFID" name: %s fid "DFID", type %u\n",
dt_obd_name(th->th_dev), PFID(lu_object_fid(&dt_obj->do_lu)),
encode_fn((char *)key),
PFID(((struct dt_insert_rec *)rec)->rec_fid),
((struct dt_insert_rec *)rec)->rec_type);
if (!dt_try_as_dir(env, dt_obj, true))
return -ENOTDIR;
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_insert(env, dt_obj, rec, key, th);
dt_write_unlock(env, dt_obj);
return rc;
}
static int out_obj_index_delete(const struct lu_env *env,
struct dt_object *dt_obj,
const struct dt_key *key,
struct thandle *th)
{
int rc;
CDEBUG(D_INFO, "%s: index delete "DFID" name: %s\n",
dt_obd_name(th->th_dev), PFID(lu_object_fid(&dt_obj->do_lu)),
(char *)key);
if (!dt_try_as_dir(env, dt_obj, true))
return -ENOTDIR;
dt_write_lock(env, dt_obj, DT_TGT_CHILD);
rc = dt_delete(env, dt_obj, key, th);
dt_write_unlock(env, dt_obj);
return rc;
}
static int out_tx_index_insert_exec(const struct lu_env *env,
struct thandle *th, struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
if (unlikely(!dt_object_exists(dt_obj)))
RETURN(-ESTALE);
rc = out_obj_index_insert(env, dt_obj,
(const struct dt_rec *)&arg->u.insert.rec,
arg->u.insert.key, th);
CDEBUG(D_INFO, "%s: insert idx insert reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
return rc;
}
static int out_tx_index_insert_undo(const struct lu_env *env,
struct thandle *th, struct tx_arg *arg)
{
return out_obj_index_delete(env, arg->object, arg->u.insert.key, th);
}
int out_index_insert_add_exec(const struct lu_env *env,
struct dt_object *dt_obj,
const struct dt_rec *rec,
const struct dt_key *key,
struct thandle_exec_args *ta,
struct thandle *th,
struct object_update_reply *reply,
int index, const char *file, int line)
{
struct tx_arg *arg;
int rc;
if (!dt_try_as_dir(env, dt_obj, false))
return -ENOTDIR;
rc = dt_declare_insert(env, dt_obj, rec, key, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_index_insert_exec,
out_tx_index_insert_undo, file, line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->reply = reply;
arg->index = index;
arg->u.insert.rec = *(const struct dt_insert_rec *)rec;
arg->u.insert.key = key;
return 0;
}
static int out_tx_index_delete_exec(const struct lu_env *env,
struct thandle *th,
struct tx_arg *arg)
{
int rc;
rc = out_obj_index_delete(env, arg->object, arg->u.insert.key, th);
CDEBUG(D_INFO, "%s: delete idx insert reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
return rc;
}
static int out_tx_index_delete_undo(const struct lu_env *env,
struct thandle *th,
struct tx_arg *arg)
{
CERROR("%s: Oops, can not rollback index_delete yet: rc = %d\n",
dt_obd_name(th->th_dev), -ENOTSUPP);
return -ENOTSUPP;
}
int out_index_delete_add_exec(const struct lu_env *env,
struct dt_object *dt_obj,
const struct dt_key *key,
struct thandle_exec_args *ta,
struct thandle *th,
struct object_update_reply *reply,
int index, const char *file, int line)
{
struct tx_arg *arg;
int rc;
if (!dt_try_as_dir(env, dt_obj, true))
return -ENOTDIR;
LASSERT(ta->ta_handle != NULL);
rc = dt_declare_delete(env, dt_obj, key, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_index_delete_exec,
out_tx_index_delete_undo, file, line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->reply = reply;
arg->index = index;
arg->u.insert.key = key;
return 0;
}
static int out_tx_destroy_exec(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
struct dt_object *dt_obj = arg->object;
int rc;
rc = out_obj_destroy(env, dt_obj, th);
CDEBUG(D_INFO, "%s: insert destroy reply %p index %d: rc = %d\n",
dt_obd_name(th->th_dev), arg->reply, arg->index, rc);
if (arg->reply != NULL)
object_update_result_insert(arg->reply, NULL, 0, arg->index,
rc);
RETURN(rc);
}
static int out_tx_destroy_undo(const struct lu_env *env, struct thandle *th,
struct tx_arg *arg)
{
CERROR("%s: not support destroy undo yet!: rc = %d\n",
dt_obd_name(th->th_dev), -ENOTSUPP);
return -ENOTSUPP;
}
int out_destroy_add_exec(const struct lu_env *env, struct dt_object *dt_obj,
struct thandle_exec_args *ta, struct thandle *th,
struct object_update_reply *reply,
int index, const char *file, int line)
{
struct tx_arg *arg;
int rc;
rc = dt_declare_destroy(env, dt_obj, th);
if (rc != 0)
return rc;
arg = tx_add_exec(ta, out_tx_destroy_exec, out_tx_destroy_undo,
file, line);
if (IS_ERR(arg))
return PTR_ERR(arg);
lu_object_get(&dt_obj->do_lu);
arg->object = dt_obj;
arg->reply = reply;
arg->index = index;
return 0;
}
