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Replace unpredictable EINVAL error returns.

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Return EINVAL only for simple programmer errors.
This commit is contained in:
Hallvard Furuseth 2013-08-09 13:05:14 +02:00
parent 22c104c5d7
commit 1ecd86b14c
2 changed files with 19 additions and 11 deletions
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6
libraries/liblmdb/lmdb.h
View file

@ -387,7 +387,11 @@ typedef enum MDB_cursor_op {
#define MDB_INCOMPATIBLE (-30784)
/** Invalid reuse of reader locktable slot */
#define MDB_BAD_RSLOT (-30783)
#define MDB_LAST_ERRCODE MDB_BAD_RSLOT
/** Transaction cannot recover - it must be aborted */
#define MDB_BAD_TXN (-30782)
/** Too big key/data, key is empty, or wrong DUPFIXED size */
#define MDB_BAD_VALSIZE (-30781)
#define MDB_LAST_ERRCODE MDB_BAD_VALSIZE
/** @} */
/** @brief Statistics for a database in the environment */

24
libraries/liblmdb/mdb.c
View file

@ -1127,6 +1127,8 @@ static char *const mdb_errstr[] = {
"MDB_MAP_RESIZED: Database contents grew beyond environment mapsize",
"MDB_INCOMPATIBLE: Database flags changed or would change",
"MDB_BAD_RSLOT: Invalid reuse of reader locktable slot",
"MDB_BAD_TXN: Transaction cannot recover - it must be aborted",
"MDB_BAD_VALSIZE: Too big key/data, key is empty, or wrong DUPFIXED size",
};
char *
@ -2729,7 +2731,7 @@ mdb_txn_commit(MDB_txn *txn)
DPUTS("error flag is set, can't commit");
if (txn->mt_parent)
txn->mt_parent->mt_flags |= MDB_TXN_ERROR;
rc = EINVAL;
rc = MDB_BAD_TXN;
goto fail;
}
@ -4624,7 +4626,7 @@ mdb_page_search(MDB_cursor *mc, MDB_val *key, int flags)
*/
if (F_ISSET(mc->mc_txn->mt_flags, MDB_TXN_ERROR)) {
DPUTS("transaction has failed, must abort");
return EINVAL;
return MDB_BAD_TXN;
} else {
/* Make sure we're using an up-to-date root */
if (mc->mc_dbi > MAIN_DBI) {
@ -4814,7 +4816,7 @@ mdb_get(MDB_txn *txn, MDB_dbi dbi,
return EINVAL;
if (key->mv_size == 0 || key->mv_size > MDB_MAXKEYSIZE) {
return EINVAL;
return MDB_BAD_VALSIZE;
}
mdb_cursor_init(&mc, txn, dbi, &mx);
@ -5344,8 +5346,10 @@ mdb_cursor_get(MDB_cursor *mc, MDB_val *key, MDB_val *data,
case MDB_SET:
case MDB_SET_KEY:
case MDB_SET_RANGE:
if (key == NULL || key->mv_size == 0 || key->mv_size > MDB_MAXKEYSIZE) {
if (key == NULL) {
rc = EINVAL;
} else if (key->mv_size == 0 || key->mv_size > MDB_MAXKEYSIZE) {
rc = MDB_BAD_VALSIZE;
} else if (op == MDB_SET_RANGE)
rc = mdb_cursor_set(mc, key, data, op, NULL);
else
@ -5507,14 +5511,14 @@ mdb_cursor_put(MDB_cursor *mc, MDB_val *key, MDB_val *data,
return EACCES;
if (flags != MDB_CURRENT && (key->mv_size == 0 || key->mv_size > MDB_MAXKEYSIZE))
return EINVAL;
return MDB_BAD_VALSIZE;
if (F_ISSET(mc->mc_db->md_flags, MDB_DUPSORT) && data->mv_size > MDB_MAXKEYSIZE)
return EINVAL;
return MDB_BAD_VALSIZE;
#if SIZE_MAX > MAXDATASIZE
if (data->mv_size > MAXDATASIZE)
return EINVAL;
return MDB_BAD_VALSIZE;
#endif
DPRINTF("==> put db %u key [%s], size %"Z"u, data size %"Z"u",
@ -5599,7 +5603,7 @@ mdb_cursor_put(MDB_cursor *mc, MDB_val *key, MDB_val *data,
if (IS_LEAF2(mc->mc_pg[mc->mc_top])) {
unsigned int ksize = mc->mc_db->md_pad;
if (key->mv_size != ksize)
return EINVAL;
return MDB_BAD_VALSIZE;
if (flags == MDB_CURRENT) {
char *ptr = LEAF2KEY(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top], ksize);
memcpy(ptr, key->mv_data, ksize);
@ -7182,7 +7186,7 @@ mdb_del(MDB_txn *txn, MDB_dbi dbi,
}
if (key->mv_size == 0 || key->mv_size > MDB_MAXKEYSIZE) {
return EINVAL;
return MDB_BAD_VALSIZE;
}
mdb_cursor_init(&mc, txn, dbi, &mx);
@ -7646,7 +7650,7 @@ mdb_put(MDB_txn *txn, MDB_dbi dbi,
}
if (key->mv_size == 0 || key->mv_size > MDB_MAXKEYSIZE) {
return EINVAL;
return MDB_BAD_VALSIZE;
}
if ((flags & (MDB_NOOVERWRITE|MDB_NODUPDATA|MDB_RESERVE|MDB_APPEND|MDB_APPENDDUP)) != flags)