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r12673: create functions for get_maxVersion(), set_maxVersion() and get_seqnumber()
at the winsdb layer. the ones in wrepl_server/ will be removed later.
metze
(This used to be commit 22cdbc75df
)
This commit is contained in:
parent
0b41dad3fc
commit
6d16a217d3
@ -29,10 +29,39 @@
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#include "system/time.h"
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#include "auth/auth.h"
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uint64_t winsdb_get_maxVersion(struct winsdb_handle *h)
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{
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int ret;
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struct ldb_context *ldb = h->ldb;
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struct ldb_dn *dn;
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struct ldb_result *res = NULL;
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TALLOC_CTX *tmp_ctx = talloc_new(ldb);
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uint64_t maxVersion = 0;
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dn = ldb_dn_explode(tmp_ctx, "CN=VERSION");
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if (!dn) goto failed;
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/* find the record in the WINS database */
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ret = ldb_search(ldb, dn, LDB_SCOPE_BASE,
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NULL, NULL, &res);
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if (ret != LDB_SUCCESS) goto failed;
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talloc_steal(tmp_ctx, res);
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if (res->count > 1) goto failed;
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if (res->count == 1) {
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maxVersion = ldb_msg_find_uint64(res->msgs[0], "maxVersion", 0);
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}
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failed:
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talloc_free(tmp_ctx);
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return maxVersion;
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}
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/*
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return the new maxVersion and save it
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if newVersion == 0 return the old maxVersion + 1 and save it
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if newVersion > 0 return MAX(oldMaxVersion, newMaxVersion) and save it
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*/
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static uint64_t winsdb_allocate_version(struct winsdb_handle *h)
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uint64_t winsdb_set_maxVersion(struct winsdb_handle *h, uint64_t newMaxVersion)
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{
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int trans;
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int ret;
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@ -41,7 +70,7 @@ static uint64_t winsdb_allocate_version(struct winsdb_handle *h)
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struct ldb_message *msg = NULL;
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struct ldb_context *wins_db = h->ldb;
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TALLOC_CTX *tmp_ctx = talloc_new(wins_db);
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uint64_t maxVersion = 0;
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uint64_t oldMaxVersion = 0;
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trans = ldb_transaction_start(wins_db);
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if (trans != LDB_SUCCESS) goto failed;
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@ -58,9 +87,14 @@ static uint64_t winsdb_allocate_version(struct winsdb_handle *h)
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talloc_steal(tmp_ctx, res);
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if (res->count == 1) {
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maxVersion = ldb_msg_find_uint64(res->msgs[0], "maxVersion", 0);
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oldMaxVersion = ldb_msg_find_uint64(res->msgs[0], "maxVersion", 0);
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}
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if (newMaxVersion == 0) {
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newMaxVersion = oldMaxVersion + 1;
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} else {
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newMaxVersion = MAX(oldMaxVersion, newMaxVersion);
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}
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maxVersion++;
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msg = ldb_msg_new(tmp_ctx);
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if (!msg) goto failed;
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@ -73,7 +107,7 @@ static uint64_t winsdb_allocate_version(struct winsdb_handle *h)
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if (ret != 0) goto failed;
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ret = ldb_msg_add_empty(msg, "maxVersion", LDB_FLAG_MOD_REPLACE);
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if (ret != 0) goto failed;
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ret = ldb_msg_add_fmt(msg, "maxVersion", "%llu", (long long)maxVersion);
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ret = ldb_msg_add_fmt(msg, "maxVersion", "%llu", (long long)newMaxVersion);
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if (ret != 0) goto failed;
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ret = ldb_modify(wins_db, msg);
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@ -84,7 +118,7 @@ static uint64_t winsdb_allocate_version(struct winsdb_handle *h)
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if (trans != LDB_SUCCESS) goto failed;
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talloc_free(tmp_ctx);
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return maxVersion;
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return newMaxVersion;
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failed:
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if (trans == LDB_SUCCESS) ldb_transaction_cancel(wins_db);
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@ -92,6 +126,34 @@ failed:
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return 0;
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}
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uint64_t winsdb_get_seqnumber(struct winsdb_handle *h)
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{
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int ret;
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struct ldb_context *ldb = h->ldb;
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struct ldb_dn *dn;
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struct ldb_result *res = NULL;
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TALLOC_CTX *tmp_ctx = talloc_new(ldb);
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uint64_t seqnumber = 0;
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dn = ldb_dn_explode(tmp_ctx, "@BASEINFO");
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if (!dn) goto failed;
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/* find the record in the WINS database */
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ret = ldb_search(ldb, dn, LDB_SCOPE_BASE,
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NULL, NULL, &res);
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if (ret != LDB_SUCCESS) goto failed;
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talloc_steal(tmp_ctx, res);
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if (res->count > 1) goto failed;
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if (res->count == 1) {
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seqnumber = ldb_msg_find_uint64(res->msgs[0], "sequenceNumber", 0);
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}
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failed:
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talloc_free(tmp_ctx);
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return seqnumber;
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}
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/*
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return a DN for a nbt_name
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*/
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@ -595,7 +657,8 @@ uint8_t winsdb_add(struct winsdb_handle *h, struct winsdb_record *rec, uint32_t
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if (trans != LDB_SUCCESS) goto failed;
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if (flags & WINSDB_FLAG_ALLOC_VERSION) {
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rec->version = winsdb_allocate_version(h);
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/* passing '0' means auto-allocate a new one */
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rec->version = winsdb_set_maxVersion(h, 0);
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if (rec->version == 0) goto failed;
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}
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if (flags & WINSDB_FLAG_TAKE_OWNERSHIP) {
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@ -636,7 +699,8 @@ uint8_t winsdb_modify(struct winsdb_handle *h, struct winsdb_record *rec, uint32
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if (trans != LDB_SUCCESS) goto failed;
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if (flags & WINSDB_FLAG_ALLOC_VERSION) {
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rec->version = winsdb_allocate_version(h);
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/* passing '0' means auto-allocate a new one */
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rec->version = winsdb_set_maxVersion(h, 0);
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if (rec->version == 0) goto failed;
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}
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if (flags & WINSDB_FLAG_TAKE_OWNERSHIP) {
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