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Implement OsRead in Windows.

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Natalia Portillo
2020-12-22 02:01:58 +00:00
parent e5c9415299
commit 0ae9ccbc4a
1 changed files with 22 additions and 0 deletions
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22
win32/device.c
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@@ -140,3 +140,25 @@ int32_t ReOpen(void* device_ctx, uint32_t* closeFailed)
return ctx->handle == INVALID_HANDLE_VALUE ? GetLastError() : 0;
}
int32_t OsRead(void* device_ctx, char* buffer, uint64_t offset, uint32_t length, uint32_t* duration)
{
DeviceContext* ctx = device_ctx;
BOOL ret;
LARGE_INTEGER liDistanceToMove;
DWORD nNumberOfBytesRead;
*duration = 0;
liDistanceToMove.QuadPart = offset;
if(!ctx) return -1;
// TODO: Timing
ret = SetFilePointerEx(ctx->handle, liDistanceToMove, NULL, FILE_BEGIN);
if(!ret) return GetLastError();
// TODO: Timing
ret = ReadFile(ctx->handle, buffer, length, &nNumberOfBytesRead, NULL);
return !ret ? GetLastError() : 0;
}