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dll: FspLaunch API

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This commit is contained in:
Bill Zissimopoulos
2018-01-04 11:08:23 -08:00
parent 9bd9cf4fbd
commit e111451475
6 changed files with 332 additions and 123 deletions
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68
src/dll/fs.c
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@ -16,7 +16,6 @@
*/
#include <dll/library.h>
#include <launcher/launcher.h>
enum
{
@ -191,64 +190,25 @@ FSP_API VOID FspFileSystemDelete(FSP_FILE_SYSTEM *FileSystem)
static NTSTATUS FspFileSystemLauncherDefineDosDevice(
WCHAR Sign, PWSTR MountPoint, PWSTR VolumeName)
{
NTSTATUS Result;
ULONG MountPointLen, VolumeNameLen;
PWSTR PipeBuf = 0, P;
DWORD BytesTransferred;
MountPointLen = lstrlenW(MountPoint);
VolumeNameLen = lstrlenW(VolumeName);
if (2 != MountPointLen ||
FSP_FSCTL_VOLUME_NAME_SIZEMAX / sizeof(WCHAR) <= VolumeNameLen)
if (2 != lstrlenW(MountPoint) ||
FSP_FSCTL_VOLUME_NAME_SIZEMAX / sizeof(WCHAR) <= lstrlenW(VolumeName))
return STATUS_INVALID_PARAMETER;
PipeBuf = MemAlloc(LAUNCHER_PIPE_BUFFER_SIZE);
if (0 == PipeBuf)
{
Result = STATUS_INSUFFICIENT_RESOURCES;
goto exit;
}
WCHAR Argv0[4];
PWSTR Argv[2];
NTSTATUS Result;
ULONG ErrorCode;
P = PipeBuf;
*P++ = LauncherDefineDosDevice;
*P++ = Sign;
memcpy(P, MountPoint, MountPointLen * sizeof(WCHAR)); P += MountPointLen; *P++ = L'\0';
memcpy(P, VolumeName, VolumeNameLen * sizeof(WCHAR)); P += VolumeNameLen; *P++ = L'\0';
Argv0[0] = Sign;
Argv0[1] = MountPoint[0];
Argv0[2] = MountPoint[1];
Argv0[3] = L'\0';
Result = FspCallNamedPipeSecurely(L"" LAUNCHER_PIPE_NAME,
PipeBuf, (ULONG)(P - PipeBuf) * sizeof(WCHAR), PipeBuf, LAUNCHER_PIPE_BUFFER_SIZE,
&BytesTransferred, NMPWAIT_USE_DEFAULT_WAIT, LAUNCHER_PIPE_OWNER);
if (!NT_SUCCESS(Result))
goto exit;
Argv[0] = Argv0;
Argv[1] = VolumeName;
if (sizeof(WCHAR) > BytesTransferred)
Result = RPC_NT_PROTOCOL_ERROR;
else if (LauncherSuccess == PipeBuf[0])
Result = STATUS_SUCCESS;
else if (LauncherFailure == PipeBuf[0])
{
DWORD ErrorCode = 0;
for (PWSTR P = PipeBuf + 1, EndP = PipeBuf + BytesTransferred / sizeof(WCHAR); EndP > P; P++)
{
if (L'0' > *P || *P > L'9')
break;
ErrorCode = 10 * ErrorCode + (*P - L'0');
}
Result = FspNtStatusFromWin32(ErrorCode);
if (0 == Result)
Result = RPC_NT_PROTOCOL_ERROR;
}
else
Result = RPC_NT_PROTOCOL_ERROR;
exit:
MemFree(PipeBuf);
return Result;
Result = FspLaunchCallLauncherPipe('D', 2, Argv, 0, 0, 0, &ErrorCode);
return !NT_SUCCESS(Result) ? Result : FspNtStatusFromWin32(ErrorCode);
}
static NTSTATUS FspFileSystemSetMountPoint_Drive(PWSTR MountPoint, PWSTR VolumeName,