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Fix flag checks in mdb_open

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This commit is contained in:
Howard Chu 2012-10-23 04:48:04 -07:00
parent f5b8d017df
commit c2f15990c7
1 changed files with 11 additions and 4 deletions
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15
libraries/libmdb/mdb.c
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@ -6707,6 +6707,9 @@ mdb_default_cmp(MDB_txn *txn, MDB_dbi dbi)
: ((f & MDB_REVERSEDUP) ? mdb_cmp_memnr : mdb_cmp_memn));
}
#define PERSISTENT_FLAGS 0xffff
#define VALID_FLAGS (MDB_REVERSEKEY|MDB_DUPSORT|MDB_INTEGERKEY|MDB_DUPFIXED|\
MDB_INTEGERDUP|MDB_REVERSEDUP|MDB_CREATE)
int mdb_open(MDB_txn *txn, const char *name, unsigned int flags, MDB_dbi *dbi)
{
MDB_val key, data;
@ -6720,13 +6723,17 @@ int mdb_open(MDB_txn *txn, const char *name, unsigned int flags, MDB_dbi *dbi)
mdb_default_cmp(txn, FREE_DBI);
}
if ((flags & VALID_FLAGS) != flags)
return EINVAL;
/* main DB? */
if (!name) {
*dbi = MAIN_DBI;
if (flags & (MDB_DUPSORT|MDB_REVERSEKEY|MDB_INTEGERKEY)) {
if (flags & PERSISTENT_FLAGS) {
uint16_t f2 = flags & PERSISTENT_FLAGS;
/* make sure flag changes get committed */
if ((txn->mt_dbs[MAIN_DBI].md_flags | flags) != txn->mt_dbs[MAIN_DBI].md_flags) {
txn->mt_dbs[MAIN_DBI].md_flags |= (flags & (MDB_DUPSORT|MDB_REVERSEKEY|MDB_INTEGERKEY));
if ((txn->mt_dbs[MAIN_DBI].md_flags | f2) != txn->mt_dbs[MAIN_DBI].md_flags) {
txn->mt_dbs[MAIN_DBI].md_flags |= f2;
txn->mt_flags |= MDB_TXN_DIRTY;
}
}
@ -6776,7 +6783,7 @@ int mdb_open(MDB_txn *txn, const char *name, unsigned int flags, MDB_dbi *dbi)
data.mv_data = &dummy;
memset(&dummy, 0, sizeof(dummy));
dummy.md_root = P_INVALID;
dummy.md_flags = flags & 0xffff;
dummy.md_flags = flags & PERSISTENT_FLAGS;
rc = mdb_cursor_put(&mc, &key, &data, F_SUBDATA);
dbflag = DB_DIRTY;
}