sin/samba-mirror
1
0
Fork 0
mirror of https://github.com/samba-team/samba.git synced 2024-12-27 03:21:53 +03:00
Code

- optimise tdb_store() a little

Browse Source 
- prevent a free of an unallocated pointer
This commit is contained in:
Andrew Tridgell 0001-01-01 00:00:00 +00:00
parent 1ba42aca21
commit b35b5c6388
1 changed files with 15 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
source/tdb/tdb.c
View File

@ -908,7 +908,7 @@ int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key)
unsigned hash;
tdb_off offset, rec_ptr, last_ptr;
struct list_struct rec, lastrec;
char *data;
char *data = NULL;
/* find which hash bucket it is in */
hash = tdb_hash(&key);
@ -1004,9 +1004,9 @@ int tdb_delete(TDB_CONTEXT *tdb, TDB_DATA key)
int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag)
{
struct list_struct rec;
char *data = NULL;
unsigned hash;
tdb_off rec_ptr, offset;
char *p = NULL;
/* find which hash bucket it is in */
hash = tdb_hash(&key);
@ -1053,10 +1053,18 @@ int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag)
rec.full_hash = hash;
rec.magic = TDB_MAGIC;
/* write the new record */
if (rec_write(tdb, rec_ptr, &rec) == -1) goto fail;
if (tdb_write(tdb, rec_ptr + sizeof(rec), key.dptr, key.dsize) == -1) goto fail;
if (tdb_write(tdb, rec_ptr + sizeof(rec) + key.dsize, dbuf.dptr, dbuf.dsize) == -1) goto fail;
p = (char *)malloc(sizeof(rec) + key.dsize + dbuf.dsize);
if (!p) goto fail;
memcpy(p, &rec, sizeof(rec));
memcpy(p+sizeof(rec), key.dptr, key.dsize);
memcpy(p+sizeof(rec)+key.dsize, dbuf.dptr, dbuf.dsize);
if (tdb_write(tdb, rec_ptr, p, sizeof(rec)+key.dsize+dbuf.dsize) == -1)
goto fail;
free(p);
p = NULL;
/* and point the top of the hash chain at it */
if (ofs_write(tdb, offset, &rec_ptr) == -1) goto fail;
@ -1068,7 +1076,7 @@ int tdb_store(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, int flag)
#if TDB_DEBUG
printf("store failed for hash 0x%08x in bucket %u\n", hash, BUCKET(hash));
#endif
if (data) free(data);
if (p) free(p);
tdb_unlock(tdb, BUCKET(hash));
return -1;
}