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https://github.com/CloverHackyColor/CloverBootloader.git
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87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
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/** @file
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Log to memory buffer.
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By dmazar, 26/09/2012
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**/
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#include <Library/UefiLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/PrintLib.h>
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#include "Common.h"
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#include "MemLog.h"
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//
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// Mem log sizes
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//
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#define MEM_LOG_INITIAL_SIZE (32 * 1024)
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#define MEM_LOG_MAX_SIZE (16 * 1024 * 1024)
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#define MEM_LOG_MAX_LINE_SIZE 1024
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/** Prints log messages to memory buffer. */
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EFI_STATUS EFIAPI
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MemLogPrint(IN MEM_LOG *MemLog, IN CHAR8 *Format, ...)
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{
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EFI_STATUS Status = EFI_SUCCESS;
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VA_LIST Marker;
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UINTN DataWritten;
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if (MemLog->Buffer == NULL) {
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// init log buffer
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MemLog->BufferSize = MEM_LOG_INITIAL_SIZE;
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MemLog->Buffer = AllocateZeroPool(MemLog->BufferSize);
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MemLog->Size = 0;
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}
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if (MemLog->Size + MEM_LOG_MAX_LINE_SIZE > MemLog->BufferSize) {
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// not enough place for max line - make buffer bigger
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// but not too big (if something gets out of controll)
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if (MemLog->BufferSize * 2 > MEM_LOG_MAX_SIZE) {
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return EFI_OUT_OF_RESOURCES;
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}
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MemLog->Buffer = ReallocatePool(MemLog->BufferSize, MemLog->BufferSize * 2, MemLog->Buffer);
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MemLog->BufferSize *= 2;
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}
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// add log to buffer
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VA_START (Marker, Format);
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DataWritten = AsciiVSPrint(
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MemLog->Buffer + MemLog->Size,
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MemLog->BufferSize - MemLog->Size,
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Format,
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Marker);
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VA_END (Marker);
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MemLog->Size += DataWritten;
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#if LOG_TO_FILE >= 3
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// append to file while logging (at end of line)
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if (DataWritten >= 1 && *(MemLog->Buffer + MemLog->Size - 1) == '\n') {
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Status = FsAppendMemToFileToDefaultDir(LOG_TO_FILE_PATH, (VOID*)MemLog->Buffer, MemLog->Size);
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MemLog->Size = 0;
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}
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#endif
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return Status;
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}
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/** Saves log to Log.txt in the same dir as driver. */
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EFI_STATUS
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MemLogSave(IN MEM_LOG *MemLog)
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{
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# if (LOG_TO_FILE == 1) || (LOG_TO_FILE == 2)
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return FsSaveMemToFileToDefaultDir(LOG_TO_FILE_PATH, (VOID*)MemLog->Buffer, MemLog->Size);
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# elif LOG_TO_FILE >= 3
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if (MemLog->Size > 0) {
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FsAppendMemToFileToDefaultDir(LOG_TO_FILE_PATH, (VOID*)MemLog->Buffer, MemLog->Size);
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}
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return FsAppendMemClose(TRUE);
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# else
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return EFI_SUCCESS;
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# endif
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}
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