mirror of
https://github.com/Fennix-Project/Kernel.git
synced 2025-05-25 22:14:37 +00:00
152 lines
3.7 KiB
C++
152 lines
3.7 KiB
C++
/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <display.hpp>
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#include <bitmap.hpp>
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#include <convert.h>
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#include <printf.h>
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#include <lock.hpp>
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#include <rand.hpp>
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#include <uart.hpp>
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#include <time.hpp>
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#include <debug.h>
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#include <smp.hpp>
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#include <cpu.hpp>
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#include <io.h>
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#if defined(a64)
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#include "../../arch/amd64/cpu/gdt.hpp"
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#include "../arch/amd64/cpu/apic.hpp"
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#elif defined(a32)
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#include "../../arch/i386/cpu/gdt.hpp"
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#include "../arch/i386/cpu/apic.hpp"
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#elif defined(aa64)
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#endif
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#include "../../kernel.h"
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#include "keyboard.hpp"
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extern void ExPrint(const char *Format, ...);
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extern Video::Font *CrashFont;
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extern void DisplayTopOverlay();
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extern CPU::ExceptionFrame *ExFrame;
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/* TODO: Add more info */
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struct DiagnosticFile
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{
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__packed __aligned(16) struct
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{
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uint8_t Signature[5] = {'D', 'I', 'A', 'G', '\0'};
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uint32_t Version = 1;
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char Is64Bit = 0;
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uint32_t Length = 0;
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} Header;
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__packed __aligned(16) struct
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{
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CPU::ExceptionFrame Frame;
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uint32_t KernelMemoryLength;
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uint8_t KernelMemory[];
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} Data;
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};
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nsa bool WriteDiagDataToNode(FileNode *node)
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{
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uintptr_t KStart = (uintptr_t)&_kernel_start;
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uintptr_t kEnd = (uintptr_t)&_kernel_end;
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size_t kSize = kEnd - KStart;
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size_t fileSize = sizeof(DiagnosticFile) + kSize;
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uint8_t *buf = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(fileSize));
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if (!buf)
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{
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ExPrint("\eFF0000Failed to allocate memory for diagnostic data\n");
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Display->UpdateBuffer();
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return false;
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}
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DiagnosticFile *file = (DiagnosticFile *)buf;
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file->Header = {};
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file->Header.Length = uint32_t(fileSize);
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file->Header.Is64Bit = sizeof(void *) == 8;
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file->Data.Frame = *ExFrame;
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file->Data.KernelMemoryLength = uint32_t(kSize);
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memcpy(file->Data.KernelMemory, (void *)KStart, kSize);
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ExPrint("\eFAFAFAWriting to %s\n", node->Path.c_str());
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size_t w = node->Write(buf, fileSize, 0);
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if (w != fileSize)
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{
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debug("%d out of %d bytes written", w, fileSize);
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ExPrint("\eFF0000Failed to write diagnostic data to file: %s\n",
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strerror((int)w));
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Display->UpdateBuffer();
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return false;
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}
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return true;
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}
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nsa void DiagnosticDataCollection()
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{
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Display->ClearBuffer();
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DisplayTopOverlay();
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ExPrint("\n\eFAFAFAPlease wait while we collect some diagnostic information...\n");
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ExPrint("This may take a while...\n");
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mode_t mode = S_IRWXU |
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S_IRWXG |
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S_IROTH |
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S_IFDIR;
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FileNode *panicDir = fs->ForceCreate(nullptr, "/var/panic", mode);
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if (!panicDir)
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{
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ExPrint("\eFF0000Failed to create /var/panic\n");
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Display->UpdateBuffer();
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return;
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}
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FileNode *dumpFile;
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Time::Clock clock = Time::ReadClock();
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char filename[64];
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for (int i = 0; i < INT32_MAX; i++)
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{
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sprintf(filename, "dump-%d-%d-%d-%d.dmp",
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clock.Year, clock.Month, clock.Day, i);
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if (fs->PathExists(filename, panicDir))
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continue;
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mode = S_IRWXU |
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S_IRWXG |
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S_IROTH |
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S_IFREG;
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dumpFile = fs->Create(panicDir, filename, mode);
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break;
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}
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if (!WriteDiagDataToNode(dumpFile))
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return;
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ExPrint("You can find the diagnostic file in /var/panic/%s\n", filename);
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Display->UpdateBuffer();
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}
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