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sys: IRP_MJ_CREATE

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This commit is contained in:
Bill Zissimopoulos 2015-12-02 20:10:04 -08:00
parent 25457b916d
commit 44f34b9295
2 changed files with 14 additions and 11 deletions
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24
src/sys/create.c
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@ -73,7 +73,7 @@ static NTSTATUS FspFsvolCreate(
/* cannot open the volume object */
if (0 == RelatedFileObject && 0 == FileName.Length)
return STATUS_ACCESS_DENIED; /* need error code like UNIX EPERM (STATUS_NOT_SUPPORTED?) */
return STATUS_ACCESS_DENIED; /* need error code like POSIX EPERM (STATUS_NOT_SUPPORTED?) */
/* cannot open a paging file */
if (FlagOn(Flags, SL_OPEN_PAGING_FILE))
@ -101,7 +101,7 @@ static NTSTATUS FspFsvolCreate(
}
/* check for trailing backslash */
if (sizeof(WCHAR) * 2/* root can have trailing backslash */ <= FileName.Length &&
if (sizeof(WCHAR) * 2/* not empty or root */ <= FileName.Length &&
L'\\' == FileName.Buffer[FileName.Length / 2 - 1])
{
FileName.Length -= sizeof(WCHAR);
@ -127,35 +127,39 @@ static NTSTATUS FspFsvolCreate(
* because RelatedFileObject->FsContext is guaranteed to exist while RelatedFileObject
* exists.
*/
BOOLEAN AppendBackslash =
sizeof(WCHAR) * 2/* not empty or root */ <= RelatedFsContext->FileName.Length &&
sizeof(WCHAR) <= FileName.Length && L':' != FileName.Buffer[0];
Result = FspFileContextCreate(
RelatedFsContext->FileName.Length + sizeof(WCHAR)/* backslash */ + FileName.Length,
RelatedFsContext->FileName.Length + AppendBackslash * sizeof(WCHAR) + FileName.Length,
&FsContext);
if (!NT_SUCCESS(Result))
return Result;
Result = RtlAppendUnicodeStringToString(&FsContext->FileName, &RelatedFsContext->FileName);
ASSERT(NT_SUCCESS(Result));
if (HasTrailingBackslash)
if (AppendBackslash)
{
Result = RtlAppendUnicodeToString(&FsContext->FileName, L"\\");
ASSERT(NT_SUCCESS(Result));
}
Result = RtlAppendUnicodeStringToString(&FsContext->FileName, &FileName);
ASSERT(NT_SUCCESS(Result));
}
else
{
/* absolute open */
/* must be an absolute path */
if (sizeof(WCHAR) <= FileName.Length && L'\\' != FileName.Buffer[0])
return STATUS_OBJECT_NAME_INVALID;
Result = FspFileContextCreate(
FileName.Length,
&FsContext);
if (!NT_SUCCESS(Result))
return Result;
Result = RtlAppendUnicodeStringToString(&FsContext->FileName, &FileName);
ASSERT(NT_SUCCESS(Result));
}
Result = RtlAppendUnicodeStringToString(&FsContext->FileName, &FileName);
ASSERT(NT_SUCCESS(Result));
/*
* From this point forward we MUST remember to delete the FsContext on error.
*/

1
src/sys/driver.h
View File

@ -334,7 +334,6 @@ typedef struct
{
FSRTL_ADVANCED_FCB_HEADER Header;
FSP_FILE_CONTEXT_NONPAGED *NonPaged;
BOOLEAN HasTrailingBackslash;
UNICODE_STRING FileName;
WCHAR FileNameBuf[];
} FSP_FILE_CONTEXT;