tdb/common/dump.c

説明を見る。

 /* 
   Unix SMB/CIFS implementation.

   trivial database library

   Copyright (C) Andrew Tridgell              1999-2005
   Copyright (C) Paul `Rusty' Russell              2000
   Copyright (C) Jeremy Allison                    2000-2003
   
     ** NOTE! The following LGPL license applies to the tdb
     ** library. This does NOT imply that all of Samba is released
     ** under the LGPL
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include "tdb_private.h"

static tdb_off_t tdb_dump_record(struct tdb_context *tdb, int hash,
                                 tdb_off_t offset)
{
        struct list_struct rec;
        tdb_off_t tailer_ofs, tailer;

        if (tdb->methods->tdb_read(tdb, offset, (char *)&rec, 
                                   sizeof(rec), DOCONV()) == -1) {
                printf("ERROR: failed to read record at %u\n", offset);
                return 0;
        }

        printf(" rec: hash=%d offset=0x%08x next=0x%08x rec_len=%d "
               "key_len=%d data_len=%d full_hash=0x%x magic=0x%x\n",
               hash, offset, rec.next, rec.rec_len, rec.key_len, rec.data_len,
               rec.full_hash, rec.magic);

        tailer_ofs = offset + sizeof(rec) + rec.rec_len - sizeof(tdb_off_t);

        if (tdb_ofs_read(tdb, tailer_ofs, &tailer) == -1) {
                printf("ERROR: failed to read tailer at %u\n", tailer_ofs);
                return rec.next;
        }

        if (tailer != rec.rec_len + sizeof(rec)) {
                printf("ERROR: tailer does not match record! tailer=%u totalsize=%u\n",
                                (unsigned int)tailer, (unsigned int)(rec.rec_len + sizeof(rec)));
        }
        return rec.next;
}

static int tdb_dump_chain(struct tdb_context *tdb, int i)
{
        tdb_off_t rec_ptr, top;

        top = TDB_HASH_TOP(i);

        if (tdb_lock(tdb, i, F_WRLCK) != 0)
                return -1;

        if (tdb_ofs_read(tdb, top, &rec_ptr) == -1)
                return tdb_unlock(tdb, i, F_WRLCK);

        if (rec_ptr)
                printf("hash=%d\n", i);

        while (rec_ptr) {
                rec_ptr = tdb_dump_record(tdb, i, rec_ptr);
        }

        return tdb_unlock(tdb, i, F_WRLCK);
}

void tdb_dump_all(struct tdb_context *tdb)
{
        int i;
        for (i=0;i<tdb->header.hash_size;i++) {
                tdb_dump_chain(tdb, i);
        }
        printf("freelist:\n");
        tdb_dump_chain(tdb, -1);
}

int tdb_printfreelist(struct tdb_context *tdb)
{
        int ret;
        long total_free = 0;
        tdb_off_t offset, rec_ptr;
        struct list_struct rec;

        if ((ret = tdb_lock(tdb, -1, F_WRLCK)) != 0)
                return ret;

        offset = FREELIST_TOP;

        /* read in the freelist top */
        if (tdb_ofs_read(tdb, offset, &rec_ptr) == -1) {
                tdb_unlock(tdb, -1, F_WRLCK);
                return 0;
        }

        printf("freelist top=[0x%08x]\n", rec_ptr );
        while (rec_ptr) {
                if (tdb->methods->tdb_read(tdb, rec_ptr, (char *)&rec, 
                                           sizeof(rec), DOCONV()) == -1) {
                        tdb_unlock(tdb, -1, F_WRLCK);
                        return -1;
                }

                if (rec.magic != TDB_FREE_MAGIC) {
                        printf("bad magic 0x%08x in free list\n", rec.magic);
                        tdb_unlock(tdb, -1, F_WRLCK);
                        return -1;
                }

                printf("entry offset=[0x%08x], rec.rec_len = [0x%08x (%d)] (end = 0x%08x)\n", 
                       rec_ptr, rec.rec_len, rec.rec_len, rec_ptr + rec.rec_len);
                total_free += rec.rec_len;

                /* move to the next record */
                rec_ptr = rec.next;
        }
        printf("total rec_len = [0x%08x (%d)]\n", (int)total_free, 
               (int)total_free);

        return tdb_unlock(tdb, -1, F_WRLCK);
}

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