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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos 2015-12-07 11:54:02 -08:00
parent 0fb9de1ebd
commit 23b4956488
2 changed files with 30 additions and 17 deletions
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27
inc/winfsp/fsctl.h
View File

@ -96,7 +96,7 @@ typedef struct
UINT32 CreateDisposition; /* FILE_{SUPERSEDE,CREATE,OPEN,OPEN_IF,OVERWRITE,OVERWRITE_IF} */ UINT32 CreateDisposition; /* FILE_{SUPERSEDE,CREATE,OPEN,OPEN_IF,OVERWRITE,OVERWRITE_IF} */
UINT32 CreateOptions; /* FILE_{DIRECTORY_FILE,NON_DIRECTORY_FILE,etc.} */ UINT32 CreateOptions; /* FILE_{DIRECTORY_FILE,NON_DIRECTORY_FILE,etc.} */
UINT32 FileAttributes; /* FILE_ATTRIBUTE_{NORMAL,DIRECTORY,etc.} */ UINT32 FileAttributes; /* FILE_ATTRIBUTE_{NORMAL,DIRECTORY,etc.} */
FSP_FSCTL_TRANSACT_BUF SecurityDescriptor; /* security descriptor for new files */ FSP_FSCTL_TRANSACT_BUF SecurityDescriptor; /* security descriptor for new files */
UINT64 AllocationSize; /* initial allocation size */ UINT64 AllocationSize; /* initial allocation size */
UINT64 AccessToken; /* (HANDLE); request access token; sent if NoAccessCheck is 0 */ UINT64 AccessToken; /* (HANDLE); request access token; sent if NoAccessCheck is 0 */
UINT32 DesiredAccess; /* FILE_{READ_DATA,WRITE_DATA,etc.} */ UINT32 DesiredAccess; /* FILE_{READ_DATA,WRITE_DATA,etc.} */
@ -104,8 +104,8 @@ typedef struct
UINT16 Ea; /* reserved; not currently implemented */ UINT16 Ea; /* reserved; not currently implemented */
UINT16 EaSize; /* reserved; not currently implemented */ UINT16 EaSize; /* reserved; not currently implemented */
UINT32 UserMode:1; /* request originated in user mode */ UINT32 UserMode:1; /* request originated in user mode */
UINT32 HasTraversePrivilege:1; /* requestor has TOKEN_HAS_TRAVERSE_PRIVILEGE */ UINT32 HasTraversePrivilege:1; /* requestor has TOKEN_HAS_TRAVERSE_PRIVILEGE */
UINT32 OpenTargetDirectory:1; /* open target dir and report FILE_{EXISTS,DOES_NOT_EXIST} */ UINT32 OpenTargetDirectory:1; /* open target dir and report FILE_{EXISTS,DOES_NOT_EXIST} */
UINT32 CaseSensitive:1; /* filename comparisons should be case-sensitive */ UINT32 CaseSensitive:1; /* filename comparisons should be case-sensitive */
} Create; } Create;
struct struct
@ -135,16 +135,21 @@ typedef struct
} IoStatus; } IoStatus;
union union
{ {
struct union
{ {
UINT64 UserContext; /* user context attached to an open file (unique file id) */ /* IoStatus.Status == STATUS_SUCCESS */
UINT64 UserContext2; /* user context attached to a kernel file object */ struct
/* (only low 32 bits valid in 32-bit mode) */
union
{ {
FSP_FSCTL_TRANSACT_BUF SecurityDescriptor; /* security descriptor for existing files */ UINT64 UserContext; /* open file user context (unique file id) */
FSP_FSCTL_TRANSACT_BUF ReparseFileName; /* file name to use for STATUS_REPARSE */ UINT64 UserContext2; /* kernel file object user context (only low 32 bits valid) */
} Buf; UINT32 FileAttributes; /* FILE_ATTRIBUTE_{NORMAL,DIRECTORY,etc.} */
FSP_FSCTL_TRANSACT_BUF SecurityDescriptor; /* security descriptor */
} Opened;
/* IoStatus.Status == STATUS_REPARSE */
struct
{
FSP_FSCTL_TRANSACT_BUF FileName; /* file name to use for STATUS_REPARSE */
} Reparse;
} Create; } Create;
} Rsp; } Rsp;
FSP_FSCTL_DECLSPEC_ALIGN UINT8 Buffer[]; FSP_FSCTL_DECLSPEC_ALIGN UINT8 Buffer[];

20
src/sys/create.c
View File

@ -116,6 +116,14 @@ static NTSTATUS FspFsvolCreate(
goto exit; goto exit;
} }
/* impossible create options set? */
if (FlagOn(CreateOptions, FILE_NON_DIRECTORY_FILE) &&
FlagOn(CreateOptions, FILE_DIRECTORY_FILE))
{
Result = STATUS_INVALID_PARAMETER;
goto exit;
}
/* check security descriptor validity */ /* check security descriptor validity */
if (0 != SecurityDescriptor) if (0 != SecurityDescriptor)
{ {
@ -392,9 +400,9 @@ VOID FspFsvolCreateComplete(
if (STATUS_REPARSE == Result) if (STATUS_REPARSE == Result)
{ {
ReparseFileName.Buffer = ReparseFileName.Buffer =
(PVOID)(Response->Buffer + Response->Rsp.Create.Buf.ReparseFileName.Offset); (PVOID)(Response->Buffer + Response->Rsp.Create.Reparse.FileName.Offset);
ReparseFileName.Length = ReparseFileName.MaximumLength = ReparseFileName.Length = ReparseFileName.MaximumLength =
Response->Rsp.Create.Buf.ReparseFileName.Size; Response->Rsp.Create.Reparse.FileName.Size;
Result = STATUS_ACCESS_DENIED; Result = STATUS_ACCESS_DENIED;
if (IO_REPARSE == Response->IoStatus.Information) if (IO_REPARSE == Response->IoStatus.Information)
@ -439,8 +447,8 @@ VOID FspFsvolCreateComplete(
} }
SecurityDescriptor = SecurityDescriptor =
(PVOID)(Response->Buffer + Response->Rsp.Create.Buf.SecurityDescriptor.Offset); (PVOID)(Response->Buffer + Response->Rsp.Create.Opened.SecurityDescriptor.Offset);
SecurityDescriptorSize = Response->Rsp.Create.Buf.SecurityDescriptor.Size; SecurityDescriptorSize = Response->Rsp.Create.Opened.SecurityDescriptor.Size;
/* are we doing access checks? */ /* are we doing access checks? */
if (FsvrtDeviceExtension->VolumeParams.NoSystemAccessCheck && if (FsvrtDeviceExtension->VolumeParams.NoSystemAccessCheck &&
@ -485,8 +493,8 @@ VOID FspFsvolCreateComplete(
} }
/* record the user-mode file system contexts */ /* record the user-mode file system contexts */
FsContext->UserContext = Response->Rsp.Create.UserContext; FsContext->UserContext = Response->Rsp.Create.Opened.UserContext;
FileObject->FsContext2 = (PVOID)(UINT_PTR)Response->Rsp.Create.UserContext2; FileObject->FsContext2 = (PVOID)(UINT_PTR)Response->Rsp.Create.Opened.UserContext2;
/* /*
* The following must be done under the file system volume device Resource, * The following must be done under the file system volume device Resource,