forked from Hay1tsme/segatools
amex: Defer NVRAM file open
This will hopefully allow us to use hook DLLs from multiple processes simultaneously (and so the cycle goes on).
This commit is contained in:
24
amex/sram.c
24
amex/sram.c
@ -28,6 +28,7 @@ static HRESULT sram_handle_ioctl(struct irp *irp);
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static HRESULT sram_ioctl_get_geometry(struct irp *irp);
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static struct sram_config sram_config;
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static HANDLE sram_file;
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HRESULT sram_hook_init(const struct sram_config *cfg)
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@ -40,11 +41,7 @@ HRESULT sram_hook_init(const struct sram_config *cfg)
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return S_FALSE;
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}
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hr = nvram_open_file(&sram_file, cfg->path, 0x80000);
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if (FAILED(hr)) {
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return hr;
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}
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memcpy(&sram_config, cfg, sizeof(*cfg));
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hr = iohook_push_handler(sram_handle_irp);
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@ -79,11 +76,25 @@ static HRESULT sram_handle_irp(struct irp *irp)
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static HRESULT sram_handle_open(struct irp *irp)
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{
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HRESULT hr;
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if (!wstr_eq(irp->open_filename, L"$sram")) {
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return iohook_invoke_next(irp);
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}
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if (sram_file != NULL) {
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dprintf("SRAM: Already open\n");
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return HRESULT_FROM_WIN32(ERROR_SHARING_VIOLATION);
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}
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dprintf("SRAM: Open device\n");
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hr = nvram_open_file(&sram_file, sram_config.path, 0x80000);
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if (FAILED(hr)) {
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return hr;
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}
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irp->fd = sram_file;
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return S_OK;
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@ -92,8 +103,9 @@ static HRESULT sram_handle_open(struct irp *irp)
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static HRESULT sram_handle_close(struct irp *irp)
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{
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dprintf("SRAM: Close device\n");
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sram_file = NULL;
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return S_OK;
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return iohook_invoke_next(irp);
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}
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static HRESULT sram_handle_ioctl(struct irp *irp)
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