C++ (Cpp) _PR_MD_MAP_LSEEK_ERRORの例

コード例 #1

ファイル: amigaos_fileio.c プロジェクト: sahlberg/timberwolf

PR_IMPLEMENT(PROffset64) _amigaos_LSeek64(PRFileDesc *fd, PROffset64 offset, PRSeekWhence whence)
{
    PROffset64 rv, where;

    if (offset > 0xffffffff)
    {
	PR_SetError(PR_FILE_TOO_BIG_ERROR, 0);
	return -1;
	}

    switch (whence)
    {
    case PR_SEEK_SET:
	where = SEEK_SET;
        break;
    case PR_SEEK_CUR:
	where = SEEK_CUR;
	break;
    case PR_SEEK_END:
	where = SEEK_END;
	break;
    default:
	PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
	return -1;
    }

    rv = (PROffset64)lseek(fd->secret->md.osfd, (PROffset32)offset, where);

    if (rv == -1)
    {
        _PR_MD_MAP_LSEEK_ERROR(_MD_ERRNO());
    }

    return rv;
}

コード例 #2

ファイル: w95io.c プロジェクト: AtulKumar2/gecko-dev

PROffset64
_PR_MD_LSEEK64(PRFileDesc *fd, PROffset64 offset, PRSeekWhence whence)
{
    DWORD moveMethod;
    LARGE_INTEGER li;
    DWORD err;

    switch (whence) {
        case PR_SEEK_SET:
            moveMethod = FILE_BEGIN;
            break;
        case PR_SEEK_CUR:
            moveMethod = FILE_CURRENT;
            break;
        case PR_SEEK_END:
            moveMethod = FILE_END;
            break;
        default:
            PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
            return -1;
    }

    li.QuadPart = offset;
    li.LowPart = SetFilePointer((HANDLE)fd->secret->md.osfd,
            li.LowPart, &li.HighPart, moveMethod);

    if (0xffffffff == li.LowPart && (err = GetLastError()) != NO_ERROR) {
        _PR_MD_MAP_LSEEK_ERROR(err);
        li.QuadPart = -1;
    }
    return li.QuadPart;
}

コード例 #3

ファイル: w95io.c プロジェクト: AtulKumar2/gecko-dev

PROffset32
_PR_MD_LSEEK(PRFileDesc *fd, PROffset32 offset, PRSeekWhence whence)
{
    DWORD moveMethod;
    PROffset32 rv;

    switch (whence) {
        case PR_SEEK_SET:
            moveMethod = FILE_BEGIN;
            break;
        case PR_SEEK_CUR:
            moveMethod = FILE_CURRENT;
            break;
        case PR_SEEK_END:
            moveMethod = FILE_END;
            break;
        default:
            PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
            return -1;
    }

    rv = SetFilePointer((HANDLE)fd->secret->md.osfd, offset, NULL, moveMethod);

    /*
     * If the lpDistanceToMoveHigh argument (third argument) is
     * NULL, SetFilePointer returns 0xffffffff on failure.
     */
    if (-1 == rv) {
        _PR_MD_MAP_LSEEK_ERROR(GetLastError());
    }
    return rv;
}

コード例 #4

ファイル: os2io.c プロジェクト: Akin-Net/mozilla-central

PRInt32
_PR_MD_LSEEK(PRFileDesc *fd, PRInt32 offset, PRSeekWhence whence)
{
    PRInt32 rv;
    PRUword newLocation;

    rv = DosSetFilePtr((HFILE)fd->secret->md.osfd, offset, whence, &newLocation);

	if (rv != NO_ERROR) {
		_PR_MD_MAP_LSEEK_ERROR(rv);
		return -1;
	} else
		return newLocation;
}

コード例 #5

ファイル: os2io.c プロジェクト: Akin-Net/mozilla-central

PRInt64
_PR_MD_LSEEK64(PRFileDesc *fd, PRInt64 offset, PRSeekWhence whence)
{
#ifdef NO_LONG_LONG
    PRInt64 result;
    PRInt32 rv, low = offset.lo, hi = offset.hi;
    PRUword newLocation;

    rv = DosSetFilePtr((HFILE)fd->secret->md.osfd, low, whence, &newLocation);
    rv = DosSetFilePtr((HFILE)fd->secret->md.osfd, hi, FILE_CURRENT, &newLocation);

  	if (rv != NO_ERROR) {
		_PR_MD_MAP_LSEEK_ERROR(rv);
		hi = newLocation = -1;
   }

    result.lo = newLocation;
    result.hi = hi;
	return result;

#else
    PRInt32 where, rc, lo = (PRInt32)offset, hi = (PRInt32)(offset >> 32);
    PRUint64 rv;
    PRUint32 newLocation, uhi;
    PRUint64 newLocationL;

    switch (whence)
      {
      case PR_SEEK_SET:
        where = FILE_BEGIN;
        break;
      case PR_SEEK_CUR:
        where = FILE_CURRENT;
        break;
      case PR_SEEK_END:
        where = FILE_END;
        break;
      default:
        PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
        return -1;
    }
    if (isWSEB)
    {
        rc = myDosSetFilePtrL((HFILE)fd->secret->md.osfd, offset, where, (PLONGLONG)&newLocationL);
    }
    else
    {
        rc = DosSetFilePtr((HFILE)fd->secret->md.osfd, lo, where, (PULONG)&newLocation);
    }
     
    if (rc != NO_ERROR) {
      _PR_MD_MAP_LSEEK_ERROR(rc);
      return -1;
    }
    
    if (isWSEB)
    {
        return newLocationL;
    }

    uhi = (PRUint32)hi;
    PR_ASSERT((PRInt32)uhi >= 0);
    rv = uhi;
    PR_ASSERT((PRInt64)rv >= 0);
    rv = (rv << 32);
    PR_ASSERT((PRInt64)rv >= 0);
    rv += newLocation;
    PR_ASSERT((PRInt64)rv >= 0);
    return (PRInt64)rv;
#endif
}