record.c

来自「创建一个符合iso-9660标准的iso文件系统」· C语言 代码 · 共 576 行 · 第 1/2 页

      d_fetchw(&pdata, &data->u.dir.dirUsrInfo.frRect.bottom);
      d_fetchw(&pdata, &data->u.dir.dirUsrInfo.frRect.right);
      d_fetchw(&pdata, &data->u.dir.dirUsrInfo.frFlags);
      d_fetchw(&pdata, &data->u.dir.dirUsrInfo.frLocation.v);
      d_fetchw(&pdata, &data->u.dir.dirUsrInfo.frLocation.h);
      d_fetchw(&pdata, &data->u.dir.dirUsrInfo.frView);

      d_fetchw(&pdata, &data->u.dir.dirFndrInfo.frScroll.v);
      d_fetchw(&pdata, &data->u.dir.dirFndrInfo.frScroll.h);
      d_fetchl(&pdata, &data->u.dir.dirFndrInfo.frOpenChain);
      d_fetchw(&pdata, &data->u.dir.dirFndrInfo.frUnused);
      d_fetchw(&pdata, &data->u.dir.dirFndrInfo.frComment);
      d_fetchl(&pdata, &data->u.dir.dirFndrInfo.frPutAway);

      for (i = 0; i < 4; ++i)
	d_fetchl(&pdata, &data->u.dir.dirResrv[i]);

      break;

    case cdrFilRec:
      d_fetchb(&pdata, (char *) &data->u.fil.filFlags);
      d_fetchb(&pdata, (char *) &data->u.fil.filTyp);

      d_fetchl(&pdata, &data->u.fil.filUsrWds.fdType);
      d_fetchl(&pdata, &data->u.fil.filUsrWds.fdCreator);
      d_fetchw(&pdata, &data->u.fil.filUsrWds.fdFlags);
      d_fetchw(&pdata, &data->u.fil.filUsrWds.fdLocation.v);
      d_fetchw(&pdata, &data->u.fil.filUsrWds.fdLocation.h);
      d_fetchw(&pdata, &data->u.fil.filUsrWds.fdFldr);

      d_fetchl(&pdata, (long *) &data->u.fil.filFlNum);

      d_fetchw(&pdata, (short *) &data->u.fil.filStBlk);
      d_fetchl(&pdata, (long *) &data->u.fil.filLgLen);
      d_fetchl(&pdata, (long *) &data->u.fil.filPyLen);

      d_fetchw(&pdata, (short *) &data->u.fil.filRStBlk);
      d_fetchl(&pdata, (long *) &data->u.fil.filRLgLen);
      d_fetchl(&pdata, (long *) &data->u.fil.filRPyLen);

      d_fetchl(&pdata, &data->u.fil.filCrDat);
      d_fetchl(&pdata, &data->u.fil.filMdDat);
      d_fetchl(&pdata, &data->u.fil.filBkDat);

      d_fetchw(&pdata, &data->u.fil.filFndrInfo.fdIconID);
      for (i = 0; i < 4; ++i)
	d_fetchw(&pdata, &data->u.fil.filFndrInfo.fdUnused[i]);
      d_fetchw(&pdata, &data->u.fil.filFndrInfo.fdComment);
      d_fetchl(&pdata, &data->u.fil.filFndrInfo.fdPutAway);

      d_fetchw(&pdata, (short *) &data->u.fil.filClpSize);

      for (i = 0; i < 3; ++i)
	{
	  d_fetchw(&pdata, (short *) &data->u.fil.filExtRec[i].xdrStABN);
	  d_fetchw(&pdata, (short *) &data->u.fil.filExtRec[i].xdrNumABlks);
	}

      for (i = 0; i < 3; ++i)
	{
	  d_fetchw(&pdata, (short *) &data->u.fil.filRExtRec[i].xdrStABN);
	  d_fetchw(&pdata, (short *) &data->u.fil.filRExtRec[i].xdrNumABlks);
	}

      d_fetchl(&pdata, &data->u.fil.filResrv);
      break;

    case cdrThdRec:
      for (i = 0; i < 2; ++i)
	d_fetchl(&pdata, &data->u.dthd.thdResrv[i]);

      d_fetchl(&pdata, (long *) &data->u.dthd.thdParID);
      d_fetchs(&pdata, data->u.dthd.thdCName, sizeof(data->u.dthd.thdCName));
      break;

    case cdrFThdRec:
      for (i = 0; i < 2; ++i)
	d_fetchl(&pdata, &data->u.fthd.fthdResrv[i]);

      d_fetchl(&pdata, (long *) &data->u.fthd.fthdParID);
      d_fetchs(&pdata, data->u.fthd.fthdCName, sizeof(data->u.fthd.fthdCName));
      break;

    default:
      abort();
    }
}

/*
 * NAME:	record->packextdata()
 * DESCRIPTION:	pack extent record data
 */
void r_packextdata(data, pdata, len)
	ExtDataRec	*data;
	unsigned char	*pdata;
	int		*len;
{
  unsigned char *start = pdata;
  int i;

  for (i = 0; i < 3; ++i)
    {
      d_storew(&pdata, (*data)[i].xdrStABN);
      d_storew(&pdata, (*data)[i].xdrNumABlks);
    }

  if (len)
    *len += pdata - start;
}

/*
 * NAME:	record->unpackextdata()
 * DESCRIPTION:	unpack extent record data
 */
void r_unpackextdata(pdata, data)
	unsigned char	*pdata;
	ExtDataRec	*data;
{
  int i;

  for (i = 0; i < 3; ++i)
    {
      d_fetchw(&pdata, (short *) &(*data)[i].xdrStABN);
      d_fetchw(&pdata, (short *) &(*data)[i].xdrNumABlks);
    }
}

/*
 * NAME:	record->makecatkey()
 * DESCRIPTION:	construct a catalog record key
 */
void r_makecatkey(key, parid, name)
	CatKeyRec	*key;
	long		parid;
	char		*name;
{
  int len;

  len = strlen(name) + 1;

  key->ckrKeyLen = 0x05 + len + (len & 1);
  key->ckrResrv1 = 0;
  key->ckrParID  = parid;

  strcpy(key->ckrCName, name);
}

/*
 * NAME:	record->makeextkey()
 * DESCRIPTION:	construct an extents record key
 */
void r_makeextkey(key, ffork, fnum, fabn)
	ExtKeyRec	*key;
	int		ffork;
	long		fnum;
	unsigned int	fabn;
{
  key->xkrKeyLen = 0x07;
  key->xkrFkType = ffork;
  key->xkrFNum   = fnum;
  key->xkrFABN   = fabn;
}

/*
 * NAME:	record->unpackdirent()
 * DESCRIPTION:	unpack catalog information into hfsdirent structure
 *
 * Taken fron v3.2.6
 */
void r_unpackdirent(parid, name, data, ent)
	long		parid;
	char		*name;
	CatDataRec	*data;
	hfsdirent	*ent;
{
  strcpy(ent->name, name);
  ent->parid = parid;

  switch (data->cdrType)
    {
    case cdrDirRec:
      ent->flags = HFS_ISDIR;
      ent->cnid  = data->u.dir.dirDirID;

      ent->crdate = d_toutime(data->u.dir.dirCrDat);
      ent->mddate = d_toutime(data->u.dir.dirMdDat);
      ent->bkdate = d_toutime(data->u.dir.dirBkDat);

      ent->fdflags      = data->u.dir.dirUsrInfo.frFlags;
      ent->fdlocation.v = data->u.dir.dirUsrInfo.frLocation.v;
      ent->fdlocation.h = data->u.dir.dirUsrInfo.frLocation.h;

      ent->u.dir.valence = data->u.dir.dirVal;

      ent->u.dir.rect.top    = data->u.dir.dirUsrInfo.frRect.top;
      ent->u.dir.rect.left   = data->u.dir.dirUsrInfo.frRect.left;
      ent->u.dir.rect.bottom = data->u.dir.dirUsrInfo.frRect.bottom;
      ent->u.dir.rect.right  = data->u.dir.dirUsrInfo.frRect.right;

      /* mkhybrid extra */
      ent->u.dir.frscroll.v  = data->u.dir.dirFndrInfo.frScroll.v;
      ent->u.dir.frscroll.h  = data->u.dir.dirFndrInfo.frScroll.h;
      ent->u.dir.view	     = data->u.dir.dirUsrInfo.frView;

      break;

    case cdrFilRec:
      ent->flags = (data->u.fil.filFlags & (1 << 0)) ? HFS_ISLOCKED : 0;
      ent->cnid  = data->u.fil.filFlNum;

      ent->crdate = d_toutime(data->u.fil.filCrDat);
      ent->mddate = d_toutime(data->u.fil.filMdDat);
      ent->bkdate = d_toutime(data->u.fil.filBkDat);

      ent->fdflags      = data->u.fil.filUsrWds.fdFlags;
      ent->fdlocation.v = data->u.fil.filUsrWds.fdLocation.v;
      ent->fdlocation.h = data->u.fil.filUsrWds.fdLocation.h;

      ent->u.file.dsize = data->u.fil.filLgLen;
      ent->u.file.rsize = data->u.fil.filRLgLen;

      d_putl((unsigned char *) ent->u.file.type,
	      data->u.fil.filUsrWds.fdType);
      d_putl((unsigned char *) ent->u.file.creator,
	     data->u.fil.filUsrWds.fdCreator);

      ent->u.file.type[4] = ent->u.file.creator[4] = 0;

      break;
    }
}

/*
 * NAME:	record->packdirent()
 * DESCRIPTION:	make changes to a catalog record
 *
 * Taken fron v3.2.6
 */
void r_packdirent(data, ent)
	CatDataRec	*data;
	hfsdirent	*ent;
{
  switch (data->cdrType)
    {
    case cdrDirRec:
      data->u.dir.dirCrDat = d_tomtime(ent->crdate);
      data->u.dir.dirMdDat = d_tomtime(ent->mddate);
      data->u.dir.dirBkDat = d_tomtime(ent->bkdate);

      data->u.dir.dirUsrInfo.frFlags      = ent->fdflags;
      data->u.dir.dirUsrInfo.frLocation.v = ent->fdlocation.v;
      data->u.dir.dirUsrInfo.frLocation.h = ent->fdlocation.h;

      data->u.dir.dirUsrInfo.frRect.top    = ent->u.dir.rect.top;
      data->u.dir.dirUsrInfo.frRect.left   = ent->u.dir.rect.left;
      data->u.dir.dirUsrInfo.frRect.bottom = ent->u.dir.rect.bottom;
      data->u.dir.dirUsrInfo.frRect.right  = ent->u.dir.rect.right;

      /* mkhybrid extra */
      data->u.dir.dirFndrInfo.frScroll.v   = ent->u.dir.frscroll.v;
      data->u.dir.dirFndrInfo.frScroll.h   = ent->u.dir.frscroll.h;
      data->u.dir.dirUsrInfo.frView	   = ent->u.dir.view;

      break;

    case cdrFilRec:
      if (ent->flags & HFS_ISLOCKED)
	data->u.fil.filFlags |=  (1 << 0);
      else
	data->u.fil.filFlags &= ~(1 << 0);

      data->u.fil.filCrDat = d_tomtime(ent->crdate);
      data->u.fil.filMdDat = d_tomtime(ent->mddate);
      data->u.fil.filBkDat = d_tomtime(ent->bkdate);

      data->u.fil.filUsrWds.fdFlags      = ent->fdflags;
      data->u.fil.filUsrWds.fdLocation.v = ent->fdlocation.v;
      data->u.fil.filUsrWds.fdLocation.h = ent->fdlocation.h;

      data->u.fil.filUsrWds.fdType =
	d_getl((unsigned char *) ent->u.file.type);
      data->u.fil.filUsrWds.fdCreator =
	d_getl((unsigned char *) ent->u.file.creator);

      break;
    }
}