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add dbwrap_change_int32_atomic

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This commit is contained in:
Volker Lendecke
2008-03-09 11:15:10 +01:00
parent 627688c7ba
commit 4ee21a98bc
1 changed files with 28 additions and 0 deletions
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28
source/lib/dbwrap_util.c
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@@ -88,3 +88,31 @@ uint32_t dbwrap_change_uint32_atomic(struct db_context *db, const char *keystr,
return 0;
}
int32 dbwrap_change_int32_atomic(struct db_context *db, const char *keystr,
int32 *oldval, int32 change_val)
{
struct db_record *rec;
int32 val = -1;
TDB_DATA data;
if (!(rec = db->fetch_locked(db, NULL,
string_term_tdb_data(keystr)))) {
return -1;
}
if ((rec->value.dptr != NULL)
&& (rec->value.dsize == sizeof(val))) {
val = IVAL(rec->value.dptr, 0);
}
val += change_val;
data.dsize = sizeof(val);
data.dptr = (uint8 *)&val;
rec->store(rec, data, TDB_REPLACE);
TALLOC_FREE(rec);
return 0;
}