Merge remote-tracking branch 'Kernel/master'

2025-07-01 18:39:16 +00:00 · 2024-11-20 05:00:33 +02:00
parent 93d408e0af 19f2a78d35
commit 682c84b2af
468 changed files with 112800 additions and 1 deletions
--- a/Kernel/core/panic/diag.cpp
+++ b/Kernel/core/panic/diag.cpp
@ -0,0 +1,150 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <display.hpp>
+#include <bitmap.hpp>
+#include <convert.h>
+#include <printf.h>
+#include <lock.hpp>
+#include <rand.hpp>
+#include <uart.hpp>
+#include <time.hpp>
+#include <debug.h>
+#include <smp.hpp>
+#include <cpu.hpp>
+#include <io.h>
+
+#if defined(a64)
+#include "../../arch/amd64/cpu/gdt.hpp"
+#include "../arch/amd64/cpu/apic.hpp"
+#elif defined(a32)
+#include "../../arch/i386/cpu/gdt.hpp"
+#include "../arch/i386/cpu/apic.hpp"
+#elif defined(aa64)
+#endif
+
+#include "../../kernel.h"
+#include "kbd/keyboard.hpp"
+
+extern void ExPrint(const char *Format, ...);
+extern void DisplayTopOverlay();
+extern CPU::ExceptionFrame *ExFrame;
+
+/* TODO: Add more info */
+struct DiagnosticFile
+{
+	__packed __aligned(16) struct
+	{
+		uint8_t Signature[5] = {'D', 'I', 'A', 'G', '\0'};
+		uint32_t Version = 1;
+		char Is64Bit = 0;
+		uint32_t Length = 0;
+	} Header;
+
+	__packed __aligned(16) struct
+	{
+		CPU::ExceptionFrame Frame;
+
+		uint32_t KernelMemoryLength;
+		uint8_t KernelMemory[];
+	} Data;
+};
+
+nsa bool WriteDiagDataToNode(FileNode *node)
+{
+	uintptr_t KStart = (uintptr_t)&_kernel_start;
+	uintptr_t kEnd = (uintptr_t)&_kernel_end;
+	size_t kSize = kEnd - KStart;
+
+	size_t fileSize = sizeof(DiagnosticFile) + kSize;
+	uint8_t *buf = (uint8_t *)KernelAllocator.RequestPages(TO_PAGES(fileSize));
+	if (!buf)
+	{
+		ExPrint("\x1b[0;30;41mFailed to allocate memory for diagnostic data\x1b[0m\n");
+		Display->UpdateBuffer();
+		return false;
+	}
+
+	DiagnosticFile *file = (DiagnosticFile *)buf;
+	file->Header = {};
+	file->Header.Length = uint32_t(fileSize);
+	file->Header.Is64Bit = sizeof(void *) == 8;
+
+	file->Data.Frame = *ExFrame;
+	file->Data.KernelMemoryLength = uint32_t(kSize);
+	memcpy(file->Data.KernelMemory, (void *)KStart, kSize);
+
+	ExPrint("Writing to %s\n", node->Path.c_str());
+	size_t w = node->Write(buf, fileSize, 0);
+	if (w != fileSize)
+	{
+		debug("%d out of %d bytes written", w, fileSize);
+		ExPrint("\x1b[0;30;41mFailed to write diagnostic data to file: %s\x1b[0m\n",
+				strerror((int)w));
+		Display->UpdateBuffer();
+		return false;
+	}
+
+	return true;
+}
+
+nsa void DiagnosticDataCollection()
+{
+	Display->ClearBuffer();
+	DisplayTopOverlay();
+
+	ExPrint("\nPlease wait while we collect some diagnostic information...\n");
+	ExPrint("This may take a while...\n");
+
+	mode_t mode = S_IRWXU |
+				  S_IRWXG |
+				  S_IROTH |
+				  S_IFDIR;
+
+	FileNode *panicDir = fs->ForceCreate(nullptr, "/var/panic", mode);
+	if (!panicDir)
+	{
+		ExPrint("\x1b[0;30;41mFailed to create /var/panic\x1b[0m\n");
+		Display->UpdateBuffer();
+		return;
+	}
+
+	FileNode *dumpFile;
+	Time::Clock clock = Time::ReadClock();
+	char filename[64];
+	for (int i = 0; i < INT32_MAX; i++)
+	{
+		sprintf(filename, "dump-%d-%d-%d-%d.dmp",
+				clock.Year, clock.Month, clock.Day, i);
+		if (fs->PathExists(filename, panicDir))
+			continue;
+
+		mode = S_IRWXU |
+			   S_IRWXG |
+			   S_IROTH |
+			   S_IFREG;
+
+		dumpFile = fs->Create(panicDir, filename, mode);
+		break;
+	}
+
+	if (!WriteDiagDataToNode(dumpFile))
+		return;
+
+	ExPrint("You can find the diagnostic file in /var/panic/%s\n", filename);
+	Display->UpdateBuffer();
+}