1999-01-17 17:45:20 +00:00
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A Faire :
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finir FsdDirectoryControl.
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tester les <20>critures.
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FsdCreate doit cr<63>er le fichier s'il n'existe pas et que le r<>pertoire parent existe,
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et que les options d'appel lee demandent.
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fichiers sources :
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iface.c
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dir.c
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blockdev.c
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vfat.h
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fonctions visibles de l'ext<78>rieur (appel<65>es par IoCallDriver):
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DriverEntry : iface.c
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initialisation du driver
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rend visibles les fonctions suivantes :
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FsdFileSystemControl
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r<>pond aux demandes IRP_MJ_FILE_SYSTEM_CONTROL
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monte les filesystems qu'il reconnait
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appelle FsdHasFileSystem pour voir si le driver reconnait le filesystem.
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puis appelle FsdMount.
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NTSTATUS FsdCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp)
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r<>pond aux demandes IRP_MJ_CREATE :
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appelle FsdOpenFile, qui remplit IoGetCurrentIrpStackLocation(Irp)->FileObject->Fcb
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remplit Irp->IoStatus
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appelle IoCompleteRequest
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FsdClose
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r<>pond aux demandes IRP_MJ_CLOSE
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appelle FsdCloseFile, qui ne fait rien actuellement.
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remplit Irp->IoStatus
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appelle IoCompleteRequest
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FsdRead
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r<>pond aux demandes IRP_MJ_READ
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FsdWrite
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r<>pond aux demandes IRP_MJ_WRITE
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FsdQueryInformation
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r<>pond aux demandes IRP_MJ_QUERY_INFORMATION
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FsdDirectoryControl
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r<>pond aux demandes IRP_MJ_DIRECTORY_CONTROL
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fonctions strictement internes dans iface.c :
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ULONG Fat32GetNextCluster(PDEVICE_EXTENSION DeviceExt, ULONG CurrentCluster)
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ULONG Fat16GetNextCluster(PDEVICE_EXTENSION DeviceExt, ULONG CurrentCluster)
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ULONG Fat12GetNextCluster(PDEVICE_EXTENSION DeviceExt, ULONG CurrentCluster)
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ULONG GetNextCluster(PDEVICE_EXTENSION DeviceExt, ULONG CurrentCluster)
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ULONG FAT16FindAvailableCluster(PDEVICE_EXTENSION DeviceExt)
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void FAT16WriteCluster(PDEVICE_EXTENSION DeviceExt, ULONG ClusterToWrite,
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ULONG NewValue)
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void WriteCluster(PDEVICE_EXTENSION DeviceExt, ULONG ClusterToWrite,
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ULONG NewValue)
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ULONG GetNextWriteCluster(PDEVICE_EXTENSION DeviceExt, ULONG CurrentCluster)
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2021-09-13 01:33:14 +00:00
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unsigned long ClusterToSector(PDEVICE_EXTENSION DeviceExt,
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1999-01-17 17:45:20 +00:00
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unsigned long Cluster)
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void RtlAnsiToUnicode(PWSTR Dest, PCH Source, ULONG Length)
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void vfat_initstr(wchar_t *wstr, ULONG wsize)
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wchar_t * vfat_wcsncat(wchar_t * dest, const wchar_t * src,size_t wstart, size_t wcount)
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wchar_t * vfat_wcsncpy(wchar_t * dest, const wchar_t *src,size_t wcount)
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wchar_t * vfat_movstr(wchar_t * dest, const wchar_t *src, ULONG dpos,
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ULONG spos, ULONG len)
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BOOLEAN IsLastEntry(PVOID Block, ULONG Offset)
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BOOLEAN IsDeletedEntry(PVOID Block, ULONG Offset)
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BOOLEAN GetEntryName(PVOID Block, PULONG _Offset, PWSTR Name, PULONG _jloop,
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PDEVICE_EXTENSION DeviceExt, PULONG _StartingSector)
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BOOLEAN wstrcmpi(PWSTR s1, PWSTR s2)
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BOOLEAN wstrcmpjoki(PWSTR s1, PWSTR s2)
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NTSTATUS FindFile(PDEVICE_EXTENSION DeviceExt, PFCB Fcb,
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PFCB Parent, PWSTR FileToFind)
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parcourt le r<>pertoire d<>crit par Parent pour trouver un fichier dans le filesystem
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d<>crit par DeviceExt.Si Parent==NULL : part de la racine du filesystem.
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remplit Fcb si trouve elle le fichier, et renvoie STATUS_SUCCESS.
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renvoie STATUS_UNSUCCESSFUL sinon.
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NTSTATUS FsdCloseFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject)
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ne fait rien, renvoie STATUS_SUCCESS.
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2021-09-13 01:33:14 +00:00
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NTSTATUS FsdOpenFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
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1999-01-17 17:45:20 +00:00
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PWSTR FileName)
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parcourt l'arborescence pour trouver le fichier(appelle FindFile <20> chaque niveau)
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si trouv<75> : FileObject->FsContext = Fcb du fichier, renvoie STATUS_SUCCESS
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sinon : renvoie STATUS_UNSUCCESSFULL
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BOOLEAN FsdHasFileSystem(PDEVICE_OBJECT DeviceToMount)
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NTSTATUS FsdMountDevice(PDEVICE_EXTENSION DeviceExt,
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PDEVICE_OBJECT DeviceToMount)
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void VFATLoadCluster(PDEVICE_EXTENSION DeviceExt, PVOID Buffer, ULONG Cluster)
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void VFATWriteCluster(PDEVICE_EXTENSION DeviceExt, PVOID Buffer, ULONG Cluster)
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NTSTATUS FsdReadFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
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PVOID Buffer, ULONG Length, ULONG ReadOffset)
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lit Length octets d'un fichier
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NTSTATUS FsdWriteFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
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PVOID Buffer, ULONG Length, ULONG WriteOffset)
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NTSTATUS FsdMount(PDEVICE_OBJECT DeviceToMount)
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NTSTATUS FsdGetStandardInformation(PFCB FCB, PDEVICE_OBJECT DeviceObject,
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PFILE_STANDARD_INFORMATION StandardInfo);
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2021-09-13 01:33:14 +00:00
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