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ITS#7793 update branch key if needed

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This commit is contained in:
Howard Chu 2014-08-04 04:57:53 -07:00
parent 9febe03eb5
commit f21f15e5a0
1 changed files with 19 additions and 1 deletions
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20
libraries/liblmdb/mdb.c
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@ -6056,6 +6056,22 @@ mdb_cursor_put(MDB_cursor *mc, MDB_val *key, MDB_val *data,
return MDB_BAD_VALSIZE;
ptr = LEAF2KEY(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top], ksize);
memcpy(ptr, key->mv_data, ksize);
fix_parent:
/* if overwriting slot 0 of leaf, need to
* update branch key if there is a parent page
*/
if (mc->mc_top && !mc->mc_ki[mc->mc_top]) {
unsigned short top = mc->mc_top;
mc->mc_top--;
/* slot 0 is always an empty key, needs no update */
if (mc->mc_ki[mc->mc_top])
rc2 = mdb_update_key(mc, key);
else
rc2 = MDB_SUCCESS;
mc->mc_top = top;
if (rc2)
return rc2;
}
return MDB_SUCCESS;
}
@ -6261,8 +6277,10 @@ current:
data->mv_data = olddata.mv_data;
else if (!(mc->mc_flags & C_SUB))
memcpy(olddata.mv_data, data->mv_data, data->mv_size);
else
else {
memcpy(NODEKEY(leaf), key->mv_data, key->mv_size);
goto fix_parent;
}
return MDB_SUCCESS;
}
mdb_node_del(mc, 0);