diff options
Diffstat (limited to 'src/VBox/Devices/Storage/DrvHostFloppy.cpp')
| -rw-r--r-- | src/VBox/Devices/Storage/DrvHostFloppy.cpp | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/src/VBox/Devices/Storage/DrvHostFloppy.cpp b/src/VBox/Devices/Storage/DrvHostFloppy.cpp new file mode 100644 index 000000000..68a706239 --- /dev/null +++ b/src/VBox/Devices/Storage/DrvHostFloppy.cpp @@ -0,0 +1,233 @@ +/** @file + * + * VBox storage devices: + * Host floppy block driver + */ + +/* + * Copyright (C) 2006-2007 Sun Microsystems, Inc. + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa + * Clara, CA 95054 USA or visit http://www.sun.com if you need + * additional information or have any questions. + */ + + +/******************************************************************************* +* Header Files * +*******************************************************************************/ +#define LOG_GROUP LOG_GROUP_DRV_HOST_FLOPPY +#ifdef RT_OS_LINUX +# include <sys/ioctl.h> +# include <linux/fd.h> +# include <sys/fcntl.h> +# include <errno.h> + +# elif defined(RT_OS_WINDOWS) +# include <windows.h> +# include <dbt.h> + +#elif defined(RT_OS_L4) + +#else /* !RT_OS_WINDOWS nor RT_OS_LINUX nor RT_OS_L4 */ +# error "Unsupported Platform." +#endif /* !RT_OS_WINDOWS nor RT_OS_LINUX nor RT_OS_L4 */ + +#include <VBox/pdmdrv.h> +#include <iprt/assert.h> +#include <iprt/file.h> +#include <iprt/string.h> +#include <iprt/thread.h> +#include <iprt/semaphore.h> +#include <iprt/uuid.h> +#include <iprt/asm.h> +#include <iprt/critsect.h> + +#include "Builtins.h" +#include "DrvHostBase.h" + + +/** + * Floppy driver instance data. + */ +typedef struct DRVHOSTFLOPPY +{ + DRVHOSTBASE Base; + /** Previous poll status. */ + bool fPrevDiskIn; + +} DRVHOSTFLOPPY, *PDRVHOSTFLOPPY; + + + +#ifdef RT_OS_LINUX +/** + * Get media size and do change processing. + * + * @param pThis The instance data. + */ +static DECLCALLBACK(int) drvHostFloppyGetMediaSize(PDRVHOSTBASE pThis, uint64_t *pcb) +{ + int rc = ioctl(pThis->FileDevice, FDFLUSH); + if (rc) + { + rc = RTErrConvertFromErrno (errno); + Log(("DrvHostFloppy: FDFLUSH ioctl(%s) failed, errno=%d rc=%Rrc\n", pThis->pszDevice, errno, rc)); + return rc; + } + + floppy_drive_struct DrvStat; + rc = ioctl(pThis->FileDevice, FDGETDRVSTAT, &DrvStat); + if (rc) + { + rc = RTErrConvertFromErrno(errno); + Log(("DrvHostFloppy: FDGETDRVSTAT ioctl(%s) failed, errno=%d rc=%Rrc\n", pThis->pszDevice, errno, rc)); + return rc; + } + pThis->fReadOnly = !(DrvStat.flags & FD_DISK_WRITABLE); + + return RTFileSeek(pThis->FileDevice, 0, RTFILE_SEEK_END, pcb); +} +#endif /* RT_OS_LINUX */ + + +#ifdef RT_OS_LINUX +/** + * This thread will periodically poll the Floppy for media presence. + * + * @returns Ignored. + * @param ThreadSelf Handle of this thread. Ignored. + * @param pvUser Pointer to the driver instance structure. + */ +static DECLCALLBACK(int) drvHostFloppyPoll(PDRVHOSTBASE pThis) +{ + PDRVHOSTFLOPPY pThisFloppy = (PDRVHOSTFLOPPY)pThis; + floppy_drive_struct DrvStat; + int rc = ioctl(pThis->FileDevice, FDPOLLDRVSTAT, &DrvStat); + if (rc) + return RTErrConvertFromErrno(errno); + + RTCritSectEnter(&pThis->CritSect); + bool fDiskIn = !(DrvStat.flags & (FD_VERIFY | FD_DISK_NEWCHANGE)); + if ( fDiskIn + && !pThisFloppy->fPrevDiskIn) + { + if (pThis->fMediaPresent) + DRVHostBaseMediaNotPresent(pThis); + rc = DRVHostBaseMediaPresent(pThis); + if (RT_FAILURE(rc)) + { + pThisFloppy->fPrevDiskIn = fDiskIn; + RTCritSectLeave(&pThis->CritSect); + return rc; + } + } + + if ( !fDiskIn + && pThisFloppy->fPrevDiskIn + && pThis->fMediaPresent) + DRVHostBaseMediaNotPresent(pThis); + pThisFloppy->fPrevDiskIn = fDiskIn; + + RTCritSectLeave(&pThis->CritSect); + return VINF_SUCCESS; +} +#endif /* RT_OS_LINUX */ + + +/** + * @copydoc FNPDMDRVCONSTRUCT + */ +static DECLCALLBACK(int) drvHostFloppyConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle) +{ + PDRVHOSTFLOPPY pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTFLOPPY); + LogFlow(("drvHostFloppyConstruct: iInstance=%d\n", pDrvIns->iInstance)); + + /* + * Validate configuration. + */ + if (!CFGMR3AreValuesValid(pCfgHandle, "Path\0ReadOnly\0Interval\0Locked\0BIOSVisible\0")) + return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES; + + /* + * Init instance data. + */ + int rc = DRVHostBaseInitData(pDrvIns, pCfgHandle, PDMBLOCKTYPE_FLOPPY_1_44); + if (RT_SUCCESS(rc)) + { + /* + * Override stuff. + */ +#ifdef RT_OS_LINUX + pThis->Base.pfnPoll = drvHostFloppyPoll; + pThis->Base.pfnGetMediaSize = drvHostFloppyGetMediaSize; +#endif + + /* + * 2nd init part. + */ + rc = DRVHostBaseInitFinish(&pThis->Base); + } + if (RT_FAILURE(rc)) + { + if (!pThis->Base.fAttachFailError) + { + /* Suppressing the attach failure error must not affect the normal + * DRVHostBaseDestruct, so reset this flag below before leaving. */ + pThis->Base.fKeepInstance = true; + rc = VINF_SUCCESS; + } + DRVHostBaseDestruct(pDrvIns); + pThis->Base.fKeepInstance = false; + } + + LogFlow(("drvHostFloppyConstruct: returns %Rrc\n", rc)); + return rc; +} + + +/** + * Block driver registration record. + */ +const PDMDRVREG g_DrvHostFloppy = +{ + /* u32Version */ + PDM_DRVREG_VERSION, + /* szDriverName */ + "HostFloppy", + /* pszDescription */ + "Host Floppy Block Driver.", + /* fFlags */ + PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT, + /* fClass. */ + PDM_DRVREG_CLASS_BLOCK, + /* cMaxInstances */ + ~0, + /* cbInstance */ + sizeof(DRVHOSTFLOPPY), + /* pfnConstruct */ + drvHostFloppyConstruct, + /* pfnDestruct */ + DRVHostBaseDestruct, + /* pfnIOCtl */ + NULL, + /* pfnPowerOn */ + NULL, + /* pfnReset */ + NULL, + /* pfnSuspend */ + NULL, + /* pfnResume */ + NULL, + /* pfnDetach */ + NULL +}; + |