#include "dbwrap/dbwrap_ctdb.h"
#include "g_lock.h"
#include "messages.h"
+#include "messages_ctdb.h"
#include "lib/cluster_support.h"
#include "lib/util/tevent_ntstatus.h"
struct db_ctdb_ctx {
struct db_context *db;
- struct ctdbd_connection *conn;
struct tdb_wrap *wtdb;
uint32_t db_id;
struct db_ctdb_transaction_handle *transaction;
}
become_root();
- ret = ctdbd_init_connection(mem_ctx,
- lp_ctdbd_socket(),
- lp_ctdb_timeout(),
- &ctdb_async_ctx.async_conn);
+ ret = ctdbd_init_async_connection(
+ mem_ctx,
+ lp_ctdbd_socket(),
+ lp_ctdb_timeout(),
+ &ctdb_async_ctx.async_conn);
unbecome_root();
- if (ctdb_async_ctx.async_conn == NULL) {
- DBG_ERR("ctdbd_init_connection failed\n");
- return EIO;
- }
-
- ret = ctdbd_setup_fde(ctdb_async_ctx.async_conn, ev);
if (ret != 0) {
- DBG_ERR("ctdbd_setup_fde failed\n");
- TALLOC_FREE(ctdb_async_ctx.async_conn);
+ DBG_ERR("ctdbd_init_async_connection(%s, timeout=%d) "
+ "failed: ret=%d %s\n",
+ lp_ctdbd_socket(),
+ lp_ctdb_timeout(),
+ ret, strerror(ret));
return ret;
}
+ SMB_ASSERT(ctdb_async_ctx.async_conn != NULL);
+
ctdb_async_ctx.initialized = true;
return 0;
}
static NTSTATUS db_ctdb_ltdb_store(struct db_ctdb_ctx *db,
TDB_DATA key,
struct ctdb_ltdb_header *header,
- TDB_DATA data)
+ const TDB_DATA *dbufs, int num_dbufs)
{
- TDB_DATA recs[2];
+ TDB_DATA recs[num_dbufs+1];
int ret;
recs[0] = (TDB_DATA) { .dptr = (uint8_t *)header,
.dsize = sizeof(struct ctdb_ltdb_header) };
- recs[1] = data;
+ memcpy(&recs[1], dbufs, sizeof(TDB_DATA) * num_dbufs);
- ret = tdb_storev(db->wtdb->tdb, key, recs, 2, TDB_REPLACE);
+ ret = tdb_storev(db->wtdb->tdb, key, recs, num_dbufs + 1, TDB_REPLACE);
return (ret == 0) ? NT_STATUS_OK
: tdb_error_to_ntstatus(db->wtdb->tdb);
{
NTSTATUS status;
- status = g_lock_unlock(h->ctx->lock_ctx, h->lock_name);
+ status = g_lock_unlock(h->ctx->lock_ctx,
+ string_term_tdb_data(h->lock_name));
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("g_lock_unlock failed for %s: %s\n", h->lock_name,
nt_errstr(status)));
/*
* Wait a day, i.e. forever...
*/
- status = g_lock_lock(ctx->lock_ctx, h->lock_name, G_LOCK_WRITE,
- timeval_set(86400, 0));
+ status = g_lock_lock(ctx->lock_ctx,
+ string_term_tdb_data(h->lock_name),
+ G_LOCK_WRITE,
+ tevent_timeval_set(86400, 0),
+ NULL,
+ NULL);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("g_lock_lock failed: %s\n", nt_errstr(status)));
TALLOC_FREE(h);
return true;
}
-static NTSTATUS db_ctdb_store_transaction(struct db_record *rec, TDB_DATA data, int flag);
+static NTSTATUS db_ctdb_storev_transaction(struct db_record *rec,
+ const TDB_DATA *dbufs, int num_dbufs,
+ int flag);
static NTSTATUS db_ctdb_delete_transaction(struct db_record *rec);
static struct db_record *db_ctdb_fetch_locked_transaction(struct db_ctdb_ctx *ctx,
return NULL;
}
- result->store = db_ctdb_store_transaction;
+ result->storev = db_ctdb_storev_transaction;
result->delete_rec = db_ctdb_delete_transaction;
+ if (ctx->transaction == NULL) {
+ DEBUG(0, ("no transaction available\n"));
+ TALLOC_FREE(result);
+ return NULL;
+ }
if (pull_newest_from_marshall_buffer(ctx->transaction->m_write, key,
NULL, result, &result->value)) {
+ result->value_valid = true;
return result;
}
if (ctdb_data.dptr == NULL) {
/* create the record */
result->value = tdb_null;
+ result->value_valid = true;
return result;
}
result->value.dsize))) {
DEBUG(0, ("talloc failed\n"));
TALLOC_FREE(result);
+ return NULL;
}
+ result->value_valid = true;
SAFE_FREE(ctdb_data.dptr);
SAFE_FREE(rec.dptr);
}
- header.dmaster = ctdbd_vnn(h->ctx->conn);
+ header.dmaster = get_my_vnn();
header.rsn++;
h->m_write = db_ctdb_marshall_add(h, h->m_write, h->ctx->db_id, 0, key, &header, data);
/*
a record store inside a transaction
*/
-static NTSTATUS db_ctdb_store_transaction(struct db_record *rec, TDB_DATA data, int flag)
+static NTSTATUS db_ctdb_storev_transaction(
+ struct db_record *rec, const TDB_DATA *dbufs, int num_dbufs, int flag)
{
struct db_ctdb_transaction_handle *h = talloc_get_type_abort(
rec->private_data, struct db_ctdb_transaction_handle);
NTSTATUS status;
+ TDB_DATA data = {0};
+
+ status = dbwrap_merge_dbufs(&data, rec, dbufs, num_dbufs);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
status = db_ctdb_transaction_store(h, rec->key, data);
+
+ TALLOC_FREE(data.dptr);
+
return status;
}
uint64_t seqnum)
{
NTSTATUS status;
- const char *keyname = CTDB_DB_SEQNUM_KEY;
- TDB_DATA key;
- TDB_DATA data;
-
- key = string_term_tdb_data(keyname);
-
- data.dptr = (uint8_t *)&seqnum;
- data.dsize = sizeof(uint64_t);
+ TDB_DATA key = string_term_tdb_data(CTDB_DB_SEQNUM_KEY);
+ TDB_DATA data = { .dptr=(uint8_t *)&seqnum, .dsize=sizeof(seqnum) };
status = db_ctdb_transaction_store(h, key, data);
again:
/* tell ctdbd to commit to the other nodes */
- ret = ctdbd_control_local(ctx->conn, CTDB_CONTROL_TRANS3_COMMIT,
+ ret = ctdbd_control_local(messaging_ctdb_connection(),
+ CTDB_CONTROL_TRANS3_COMMIT,
h->ctx->db_id, 0,
db_ctdb_marshall_finish(h->m_write),
NULL, NULL, &status);
}
-static NTSTATUS db_ctdb_store(struct db_record *rec, TDB_DATA data, int flag)
+static NTSTATUS db_ctdb_storev(struct db_record *rec,
+ const TDB_DATA *dbufs, int num_dbufs, int flag)
{
struct db_ctdb_rec *crec = talloc_get_type_abort(
rec->private_data, struct db_ctdb_rec);
+ NTSTATUS status;
- return db_ctdb_ltdb_store(crec->ctdb_ctx, rec->key, &(crec->header), data);
+ status = db_ctdb_ltdb_store(crec->ctdb_ctx, rec->key, &(crec->header),
+ dbufs, num_dbufs);
+ return status;
}
dd->keylen = rec->key.dsize;
memcpy(dd->key, rec->key.dptr, rec->key.dsize);
- ret = ctdbd_control_local(ctx->conn,
+ ret = ctdbd_control_local(messaging_ctdb_connection(),
CTDB_CONTROL_SCHEDULE_FOR_DELETION,
crec->ctdb_ctx->db_id,
CTDB_CTRL_FLAG_NOREPLY, /* flags */
indata,
+ NULL, /* mem_ctx */
NULL, /* outdata */
- NULL, /* errmsg */
&cstatus);
talloc_free(indata.dptr);
* tdb-level cleanup
*/
- status = db_ctdb_store(rec, tdb_null, 0);
+ status = db_ctdb_storev(rec, &tdb_null, 1, 0);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
static struct db_record *fetch_locked_internal(struct db_ctdb_ctx *ctx,
TALLOC_CTX *mem_ctx,
- TDB_DATA key,
- bool tryonly)
+ TDB_DATA key)
{
struct db_record *result;
struct db_ctdb_rec *crec;
}
GetTimeOfDay(&chainlock_start);
- lockret = tryonly
- ? tdb_chainlock_nonblock(ctx->wtdb->tdb, key)
- : tdb_chainlock(ctx->wtdb->tdb, key);
+ lockret = tdb_chainlock(ctx->wtdb->tdb, key);
chainlock_time += timeval_elapsed(&chainlock_start);
if (lockret != 0) {
return NULL;
}
- result->store = db_ctdb_store;
+ result->storev = db_ctdb_storev;
result->delete_rec = db_ctdb_delete;
talloc_set_destructor(result, db_ctdb_record_destr);
* take the shortcut and just return it.
*/
- if (!db_ctdb_can_use_local_copy(ctdb_data, ctdbd_vnn(ctx->conn),
- false)) {
+ if (!db_ctdb_can_use_local_copy(ctdb_data, get_my_vnn(), false)) {
SAFE_FREE(ctdb_data.dptr);
tdb_chainunlock(ctx->wtdb->tdb, key);
talloc_set_destructor(result, NULL);
- if (tryonly && (migrate_attempts != 0)) {
- DEBUG(5, ("record migrated away again\n"));
- TALLOC_FREE(result);
- return NULL;
- }
-
migrate_attempts += 1;
DEBUG(10, ("ctdb_data.dptr = %p, dmaster = %"PRIu32" "
ctdb_data.dptr, ctdb_data.dptr ?
((struct ctdb_ltdb_header *)ctdb_data.dptr)->dmaster :
UINT32_MAX,
- ctdbd_vnn(ctx->conn),
+ get_my_vnn(),
ctdb_data.dptr ?
((struct ctdb_ltdb_header *)ctdb_data.dptr)->flags : 0));
GetTimeOfDay(&ctdb_start_time);
- ret = ctdbd_migrate(ctx->conn, ctx->db_id, key);
+ ret = ctdbd_migrate(messaging_ctdb_connection(), ctx->db_id,
+ key);
ctdb_time += timeval_elapsed(&ctdb_start_time);
if (ret != 0) {
result->value.dsize = ctdb_data.dsize - sizeof(crec->header);
result->value.dptr = NULL;
- if ((result->value.dsize != 0)
- && !(result->value.dptr = (uint8_t *)talloc_memdup(
- result, ctdb_data.dptr + sizeof(crec->header),
- result->value.dsize))) {
- DEBUG(0, ("talloc failed\n"));
- TALLOC_FREE(result);
+ if (result->value.dsize != 0) {
+ result->value.dptr = talloc_memdup(
+ result, ctdb_data.dptr + sizeof(crec->header),
+ result->value.dsize);
+ if (result->value.dptr == NULL) {
+ DBG_ERR("talloc failed\n");
+ TALLOC_FREE(result);
+ return NULL;
+ }
}
+ result->value_valid = true;
SAFE_FREE(ctdb_data.dptr);
return db_ctdb_fetch_locked_persistent(ctx, mem_ctx, key);
}
- return fetch_locked_internal(ctx, mem_ctx, key, false);
-}
-
-static struct db_record *db_ctdb_try_fetch_locked(struct db_context *db,
- TALLOC_CTX *mem_ctx,
- TDB_DATA key)
-{
- struct db_ctdb_ctx *ctx = talloc_get_type_abort(db->private_data,
- struct db_ctdb_ctx);
-
- if (ctx->transaction != NULL) {
- return db_ctdb_fetch_locked_transaction(ctx, mem_ctx, key);
- }
-
- if (db->persistent) {
- return db_ctdb_fetch_locked_persistent(ctx, mem_ctx, key);
- }
-
- return fetch_locked_internal(ctx, mem_ctx, key, true);
+ return fetch_locked_internal(ctx, mem_ctx, key);
}
struct db_ctdb_parse_record_state {
state.parser = parser;
state.private_data = private_data;
- state.my_vnn = ctdbd_vnn(ctx->conn);
+ state.my_vnn = get_my_vnn();
state.empty_record = false;
status = db_ctdb_try_parse_local_record(ctx, key, &state);
return status;
}
- ret = ctdbd_parse(ctx->conn, ctx->db_id, key,
+ ret = ctdbd_parse(messaging_ctdb_connection(), ctx->db_id, key,
state.ask_for_readonly_copy, parser, private_data);
if (ret != 0) {
if (ret == ENOENT) {
*state = (struct db_ctdb_parse_record_state) {
.parser = parser,
.private_data = private_data,
- .my_vnn = ctdbd_vnn(ctx->conn),
+ .my_vnn = get_my_vnn(),
.empty_record = false,
};
static void traverse_callback(TDB_DATA key, TDB_DATA data, void *private_data)
{
struct traverse_state *state = (struct traverse_state *)private_data;
- struct db_record *rec;
- TALLOC_CTX *tmp_ctx = talloc_new(state->db);
+ struct db_record *rec = NULL;
+ TALLOC_CTX *tmp_ctx = NULL;
+
+ tmp_ctx = talloc_new(state->db);
+ if (tmp_ctx == NULL) {
+ DBG_ERR("talloc_new failed\n");
+ return;
+ }
+
/* we have to give them a locked record to prevent races */
rec = db_ctdb_fetch_locked(state->db, tmp_ctx, key);
- if (rec && rec->value.dsize > 0) {
+ if (rec != NULL && rec->value.dsize > 0) {
state->fn(rec, state->private_data);
+ state->count++;
}
talloc_free(tmp_ctx);
}
struct db_ctdb_ctx);
struct traverse_state state;
- state.db = db;
- state.fn = fn;
- state.private_data = private_data;
- state.count = 0;
+ state = (struct traverse_state) {
+ .db = db,
+ .fn = fn,
+ .private_data = private_data,
+ };
if (db->persistent) {
struct tdb_context *ltdb = ctx->wtdb->tdb;
return state.count;
}
-static NTSTATUS db_ctdb_store_deny(struct db_record *rec, TDB_DATA data, int flag)
+static NTSTATUS db_ctdb_storev_deny(struct db_record *rec,
+ const TDB_DATA *dbufs, int num_dbufs, int flag)
{
return NT_STATUS_MEDIA_WRITE_PROTECTED;
}
rec.db = state->db;
rec.key = key;
rec.value = data;
- rec.store = db_ctdb_store_deny;
+ rec.storev = db_ctdb_storev_deny;
rec.delete_rec = db_ctdb_delete_deny;
rec.private_data = NULL;
+ rec.value_valid = true;
state->fn(&rec, state->private_data);
state->count++;
}
rec.db = state->db;
rec.key = kbuf;
rec.value = dbuf;
- rec.store = db_ctdb_store_deny;
+ rec.value_valid = true;
+ rec.storev = db_ctdb_storev_deny;
rec.delete_rec = db_ctdb_delete_deny;
rec.private_data = NULL;
struct db_ctdb_ctx);
struct traverse_state state;
- state.db = db;
- state.fn = fn;
- state.private_data = private_data;
- state.count = 0;
+ state = (struct traverse_state) {
+ .db = db,
+ .fn = fn,
+ .private_data = private_data,
+ };
if (db->persistent) {
/* for persistent databases we don't need to do a ctdb traverse,
we can do a faster local traverse */
- return tdb_traverse_read(ctx->wtdb->tdb, traverse_persistent_callback_read, &state);
+ int nrecs;
+
+ nrecs = tdb_traverse_read(ctx->wtdb->tdb,
+ traverse_persistent_callback_read,
+ &state);
+ if (nrecs == -1) {
+ return -1;
+ }
+ return state.count;
}
ret = db_ctdbd_traverse(ctx->db_id, traverse_read_callback, &state);
struct db_context *db_open_ctdb(TALLOC_CTX *mem_ctx,
struct messaging_context *msg_ctx,
- struct ctdbd_connection *conn,
const char *name,
int hash_size, int tdb_flags,
int open_flags, mode_t mode,
char *db_path;
struct loadparm_context *lp_ctx;
TDB_DATA data;
- bool persistent = (tdb_flags & TDB_CLEAR_IF_FIRST);
+ TDB_DATA outdata = {0};
+ bool persistent = (tdb_flags & TDB_CLEAR_IF_FIRST) == 0;
int32_t cstatus;
int ret;
db_ctdb->transaction = NULL;
db_ctdb->db = result;
- db_ctdb->conn = conn;
- ret = ctdbd_db_attach(db_ctdb->conn, name, &db_ctdb->db_id, persistent);
+ ret = ctdbd_db_attach(messaging_ctdb_connection(), name,
+ &db_ctdb->db_id, persistent);
if (ret != 0) {
DEBUG(0, ("ctdbd_db_attach failed for %s: %s\n", name,
strerror(ret)));
data.dptr = (uint8_t *)&db_ctdb->db_id;
data.dsize = sizeof(db_ctdb->db_id);
- ret = ctdbd_control_local(conn, CTDB_CONTROL_ENABLE_SEQNUM,
+ ret = ctdbd_control_local(messaging_ctdb_connection(),
+ CTDB_CONTROL_ENABLE_SEQNUM,
0, 0, data,
NULL, NULL, &cstatus);
if ((ret != 0) || cstatus != 0) {
}
}
- db_path = ctdbd_dbpath(db_ctdb->conn, db_ctdb, db_ctdb->db_id);
+ db_path = ctdbd_dbpath(messaging_ctdb_connection(), db_ctdb,
+ db_ctdb->db_id);
+ if (db_path == NULL) {
+ DBG_ERR("ctdbd_dbpath failed\n");
+ TALLOC_FREE(result);
+ return NULL;
+ }
result->persistent = persistent;
result->lock_order = lock_order;
data.dptr = (uint8_t *)&db_ctdb->db_id;
data.dsize = sizeof(db_ctdb->db_id);
- ret = ctdbd_control_local(conn, CTDB_CONTROL_DB_OPEN_FLAGS,
- 0, 0, data, NULL, &data, &cstatus);
+ ret = ctdbd_control_local(messaging_ctdb_connection(),
+ CTDB_CONTROL_DB_OPEN_FLAGS,
+ 0, 0, data, NULL, &outdata, &cstatus);
if (ret != 0) {
DBG_ERR(" ctdb control for db_open_flags "
"failed: %s\n", strerror(ret));
return NULL;
}
- if (cstatus != 0 || data.dsize != sizeof(int)) {
+ if (cstatus != 0 || outdata.dsize != sizeof(int)) {
DBG_ERR("ctdb_control for db_open_flags failed\n");
+ TALLOC_FREE(outdata.dptr);
TALLOC_FREE(result);
return NULL;
}
- tdb_flags = *(int *)data.dptr;
+ tdb_flags = *(int *)outdata.dptr;
+ TALLOC_FREE(outdata.dptr);
if (!result->persistent) {
ret = ctdb_async_ctx_init(NULL, messaging_tevent_context(msg_ctx));
sizeof(db_ctdb->db_id));
ret = ctdbd_control_local(
- db_ctdb->conn, CTDB_CONTROL_SET_DB_READONLY, 0, 0,
+ messaging_ctdb_connection(),
+ CTDB_CONTROL_SET_DB_READONLY, 0, 0,
indata, NULL, NULL, &cstatus);
if ((ret != 0) || (cstatus != 0)) {
DEBUG(1, ("CTDB_CONTROL_SET_DB_READONLY failed: "
result->private_data = (void *)db_ctdb;
result->fetch_locked = db_ctdb_fetch_locked;
- result->try_fetch_locked = db_ctdb_try_fetch_locked;
result->parse_record = db_ctdb_parse_record;
result->parse_record_send = db_ctdb_parse_record_send;
result->parse_record_recv = db_ctdb_parse_record_recv;
git.samba.org / samba.git / blobdiff