tdb/common/freelistcheck.c

ソースコードを見る。

関数
static int	seen_insert (struct tdb_context *mem_tdb, tdb_off_t rec_ptr)
int	tdb_validate_freelist (struct tdb_context *tdb, int *pnum_entries)

---

関数

static int seen_insert	(	struct tdb_context *	mem_tdb,
		tdb_off_t	rec_ptr
	)			[static]

freelistcheck.c の 37 行で定義されています。

参照先 TDB_DATA::dptr・TDB_DATA::dsize・tdb_store().

参照元 tdb_validate_freelist().

{
        TDB_DATA key, data;

        memset(&data, '\0', sizeof(data));
        key.dptr = (char *)&rec_ptr;
        key.dsize = sizeof(rec_ptr);
        return tdb_store(mem_tdb, key, data, TDB_INSERT);
}

int tdb_validate_freelist	(	struct tdb_context *	tdb,
		int *	pnum_entries
	)

freelistcheck.c の 47 行で定義されています。

参照先 tdb_header::hash_size・tdb_context::header・last_ptr・list_struct::next・rec_free_read()・seen_insert()・tdb・tdb_close()・TDB_ERR_CORRUPT・tdb_lock()・tdb_ofs_read()・tdb_open()・tdb_unlock().

参照元 main().

{
        struct tdb_context *mem_tdb = NULL;
        struct list_struct rec;
        tdb_off_t rec_ptr, last_ptr;
        int ret = -1;

        *pnum_entries = 0;

        mem_tdb = tdb_open("flval", tdb->header.hash_size,
                                TDB_INTERNAL, O_RDWR, 0600);
        if (!mem_tdb) {
                return -1;
        }

        if (tdb_lock(tdb, -1, F_WRLCK) == -1) {
                tdb_close(mem_tdb);
                return 0;
        }

        last_ptr = FREELIST_TOP;

        /* Store the FREELIST_TOP record. */
        if (seen_insert(mem_tdb, last_ptr) == -1) {
                ret = TDB_ERRCODE(TDB_ERR_CORRUPT, -1);
                goto fail;
        }

        /* read in the freelist top */
        if (tdb_ofs_read(tdb, FREELIST_TOP, &rec_ptr) == -1) {
                goto fail;
        }

        while (rec_ptr) {

                /* If we can't store this record (we've seen it
                   before) then the free list has a loop and must
                   be corrupt. */

                if (seen_insert(mem_tdb, rec_ptr)) {
                        ret = TDB_ERRCODE(TDB_ERR_CORRUPT, -1);
                        goto fail;
                }

                if (rec_free_read(tdb, rec_ptr, &rec) == -1) {
                        goto fail;
                }

                /* move to the next record */
                last_ptr = rec_ptr;
                rec_ptr = rec.next;
                *pnum_entries += 1;
        }

        ret = 0;

  fail:

        tdb_close(mem_tdb);
        tdb_unlock(tdb, -1, F_WRLCK);
        return ret;
}

---