forked from Dniel97/segatools
108 lines
2.2 KiB
C
108 lines
2.2 KiB
C
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#include <windows.h>
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#include <assert.h>
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#include <string.h>
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#include "hook/iohook.h"
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#include "platform/hwreset.h"
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#include "util/dprintf.h"
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#include "util/str.h"
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enum {
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HWRESET_IOCTL_RESTART = 0x80002000,
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};
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static HRESULT hwreset_handle_irp(struct irp *irp);
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static HRESULT hwreset_handle_open(struct irp *irp);
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static HRESULT hwreset_handle_close(struct irp *irp);
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static HRESULT hwreset_handle_ioctl(struct irp *irp);
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static HRESULT hwreset_ioctl_restart(struct irp *irp);
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static HANDLE hwreset_fd;
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HRESULT hwreset_hook_init(const struct hwreset_config *cfg)
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{
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HRESULT hr;
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assert(cfg != NULL);
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if (!cfg->enable) {
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return S_FALSE;
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}
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hr = iohook_open_nul_fd(&hwreset_fd);
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if (FAILED(hr)) {
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return hr;
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}
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hr = iohook_push_handler(hwreset_handle_irp);
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if (FAILED(hr)) {
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return hr;
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}
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return S_OK;
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}
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static HRESULT hwreset_handle_irp(struct irp *irp)
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{
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assert(irp != NULL);
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if (irp->op != IRP_OP_OPEN && irp->fd != hwreset_fd) {
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return iohook_invoke_next(irp);
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}
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switch (irp->op) {
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case IRP_OP_OPEN: return hwreset_handle_open(irp);
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case IRP_OP_CLOSE: return hwreset_handle_close(irp);
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case IRP_OP_IOCTL: return hwreset_handle_ioctl(irp);
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default: return HRESULT_FROM_WIN32(ERROR_INVALID_FUNCTION);
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}
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}
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static HRESULT hwreset_handle_open(struct irp *irp)
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{
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if (!wstr_ieq(irp->open_filename, L"\\\\.\\sghwreset")) {
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return iohook_invoke_next(irp);
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}
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dprintf("Hwreset: Opened device\n");
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irp->fd = hwreset_fd;
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return S_OK;
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}
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static HRESULT hwreset_handle_close(struct irp *irp)
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{
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dprintf("Hwreset: Closed device\n");
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return S_OK;
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}
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static HRESULT hwreset_handle_ioctl(struct irp *irp)
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{
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switch (irp->ioctl) {
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case HWRESET_IOCTL_RESTART:
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return hwreset_ioctl_restart(irp);
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default:
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dprintf("Hwreset: Unknown ioctl %08x, write %i read %i\n",
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irp->ioctl,
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(int) irp->write.nbytes,
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(int) irp->read.nbytes);
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return HRESULT_FROM_WIN32(ERROR_INVALID_FUNCTION);
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}
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}
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static HRESULT hwreset_ioctl_restart(struct irp *irp)
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{
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dprintf("Hwreset: Reset requested\n");
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return iobuf_write_le32(&irp->read, 1);
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}
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