mirror of
https://github.com/Fennix-Project/Kernel.git
synced 2025-07-11 07:19:20 +00:00
Update kernel
This commit is contained in:
@ -25,23 +25,8 @@
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#include "../../syscalls.h"
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#include "../../kernel.h"
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#include "../../ipc.h"
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using InterProcessCommunication::IPC;
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using InterProcessCommunication::IPCID;
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using Tasking::PCB;
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using Tasking::TCB;
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using Tasking::TaskState::Ready;
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using Tasking::TaskState::Terminated;
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using namespace Memory;
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#define SysFrm SyscallsFrame
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#if defined(a64)
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typedef long arch_t;
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#elif defined(a32)
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typedef int arch_t;
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#endif
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/* https://pubs.opengroup.org/onlinepubs/009604499/functions/close.html */
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int sys_close(SysFrm *,
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@ -26,36 +26,22 @@
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#include "../../syscalls.h"
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#include "../../kernel.h"
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#include "../../ipc.h"
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using InterProcessCommunication::IPC;
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using InterProcessCommunication::IPCID;
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using Tasking::PCB;
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using Tasking::TCB;
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using Tasking::TaskState::Ready;
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using Tasking::TaskState::Terminated;
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using vfs::RefNode;
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using namespace Memory;
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#define SysFrm SyscallsFrame
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#if defined(a64)
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typedef long arch_t;
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#elif defined(a32)
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typedef int arch_t;
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#endif
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/* https://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html */
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int sys_execve(SysFrm *Frame, const char *path,
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char *const argv[], char *const envp[])
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{
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PCB *pcb = thisProcess;
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Memory::Virtual vmm(pcb->PageTable);
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Virtual vmm = Virtual(pcb->PageTable);
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if (path == nullptr ||
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!vmm.Check((void *)path, Memory::US) ||
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!vmm.Check((void *)argv, Memory::US) ||
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!vmm.Check((void *)envp, Memory::US))
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!vmm.Check((void *)path, US) ||
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!vmm.Check((void *)argv, US) ||
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!vmm.Check((void *)envp, US))
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return -ENOENT;
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const char *safe_path;
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@ -65,7 +51,7 @@ int sys_execve(SysFrm *Frame, const char *path,
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safe_argv = (char **)pcb->vma->RequestPages(TO_PAGES(MAX_ARG));
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safe_envp = (char **)pcb->vma->RequestPages(TO_PAGES(MAX_ARG));
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{
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Memory::SwapPT swap(pcb->PageTable);
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SwapPT swap(pcb->PageTable);
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size_t len = strlen(path);
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memset((void *)safe_path, 0, PAGE_SIZE);
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memcpy((void *)safe_path, path, len);
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@ -114,7 +100,7 @@ int sys_execve(SysFrm *Frame, const char *path,
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#endif
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RefNode *File = fs->Open(safe_path,
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pcb->CurrentWorkingDirectory);
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pcb->CurrentWorkingDirectory);
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if (!File)
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{
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@ -193,7 +179,8 @@ int sys_execve(SysFrm *Frame, const char *path,
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int ret = Execute::Spawn((char *)safe_path,
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(const char **)safe_argv,
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(const char **)safe_envp,
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pcb->Parent, pcb->Info.Compatibility);
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pcb->Parent, true,
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pcb->Info.Compatibility);
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if (ret < 0)
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{
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@ -205,8 +192,8 @@ int sys_execve(SysFrm *Frame, const char *path,
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delete File;
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Tasking::Task *ctx = pcb->GetContext();
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ctx->Sleep(1000);
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pcb->State = Tasking::Zombie;
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pcb->ExitCode = 0;
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pcb->SetState(Tasking::Zombie);
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pcb->SetExitCode(0); /* FIXME: get process exit code */
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while (true)
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ctx->Yield();
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__builtin_unreachable();
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@ -25,23 +25,9 @@
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#include "../../syscalls.h"
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#include "../../kernel.h"
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#include "../../ipc.h"
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using InterProcessCommunication::IPC;
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using InterProcessCommunication::IPCID;
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using Tasking::PCB;
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using Tasking::TCB;
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using Tasking::TaskState::Ready;
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using Tasking::TaskState::Terminated;
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using namespace Memory;
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#define SysFrm SyscallsFrame
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#if defined(a64)
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typedef long arch_t;
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#elif defined(a32)
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typedef int arch_t;
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#endif
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using Tasking::TaskState::Zombie;
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/* https://pubs.opengroup.org/onlinepubs/009604499/functions/exit.html */
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__noreturn void sys_exit(SysFrm *, int status)
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@ -53,9 +39,8 @@ __noreturn void sys_exit(SysFrm *, int status)
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t->ID, status,
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status < 0 ? -status : status);
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t->ExitCode = status;
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t->KeepTime = TimeManager->CalculateTarget(10, Time::Seconds);
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t->State = Terminated;
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t->SetState(Zombie);
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t->SetExitCode(status);
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while (true)
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t->GetContext()->Yield();
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__builtin_unreachable();
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@ -25,23 +25,26 @@
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#include "../../syscalls.h"
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#include "../../kernel.h"
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#include "../../ipc.h"
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using InterProcessCommunication::IPC;
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using InterProcessCommunication::IPCID;
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using Tasking::PCB;
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using Tasking::TCB;
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using Tasking::TaskState::Ready;
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using Tasking::TaskState::Terminated;
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using namespace Memory;
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#define SysFrm SyscallsFrame
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void sys_fork_return()
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{
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#if defined(a64)
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typedef long arch_t;
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asmv("movq $0, %rax\n"); /* Return 0 */
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asmv("movq %r8, %rsp\n"); /* Restore stack pointer */
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asmv("movq %r8, %rbp\n"); /* Restore base pointer */
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asmv("swapgs\n"); /* Swap GS back to the user GS */
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asmv("sti\n"); /* Enable interrupts */
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asmv("sysretq\n"); /* Return to rcx address in user mode */
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#elif defined(a32)
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typedef int arch_t;
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#warning "sys_fork not implemented for i386"
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#endif
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__builtin_unreachable();
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}
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/* https://pubs.opengroup.org/onlinepubs/009604499/functions/fork.html */
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int sys_fork(SysFrm *Frame)
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@ -54,15 +57,11 @@ int sys_fork(SysFrm *Frame)
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PCB *Parent = thisThread->Parent;
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TCB *Thread = thisThread;
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void *ProcSymTable = nullptr;
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if (Parent->ELFSymbolTable)
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ProcSymTable = Parent->ELFSymbolTable->GetImage();
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PCB *NewProcess =
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TaskManager->CreateProcess(Parent,
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Parent->Name,
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Parent->Security.ExecutionMode,
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ProcSymTable);
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nullptr, true);
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if (!NewProcess)
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{
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@ -70,7 +69,18 @@ int sys_fork(SysFrm *Frame)
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return -EAGAIN;
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}
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NewProcess->IPC->Fork(Parent->IPC);
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if (Parent->ELFSymbolTable &&
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Parent->ELFSymbolTable->SymTableExists)
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{
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NewProcess->ELFSymbolTable = new SymbolResolver::Symbols(0);
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foreach (auto sym in Parent->ELFSymbolTable->GetSymTable())
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{
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NewProcess->ELFSymbolTable->AddSymbol(sym.Address,
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sym.FunctionName);
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}
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}
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NewProcess->PageTable = Parent->PageTable->Fork();
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TCB *NewThread =
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TaskManager->CreateThread(NewProcess,
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@ -92,50 +102,30 @@ int sys_fork(SysFrm *Frame)
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TaskManager->UpdateFrame();
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/* This if statement will overwrite
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most of the registers except rcx
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and r8-r15 */
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if (thisThread->ID == NewThread->ID)
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{
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/* We can't just return 0; because the
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gsTCB->SyscallStack is no
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longer valid */
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#if defined(a64)
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asmv("movq $0, %rax\n"); /* Return 0 */
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asmv("movq %r8, %rsp\n"); /* Restore stack pointer */
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asmv("movq %r8, %rbp\n"); /* Restore base pointer */
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asmv("swapgs\n"); /* Swap GS back to the user GS */
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asmv("sti\n"); /* Enable interrupts */
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asmv("sysretq\n"); /* Return to rcx address in user mode */
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#elif defined(a32)
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#warning "sys_fork not implemented for i386"
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#endif
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__builtin_unreachable();
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}
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memcpy(&NewThread->FPU, &Thread->FPU, sizeof(CPU::x64::FXState));
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NewThread->FPU = Thread->FPU;
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NewThread->Stack->Fork(Thread->Stack);
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NewThread->Info.Architecture = Thread->Info.Architecture;
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NewThread->Info.Compatibility = Thread->Info.Compatibility;
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NewThread->Security.IsCritical = Thread->Security.IsCritical;
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NewThread->Registers = Thread->Registers;
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#if defined(a64)
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NewThread->Registers.rip = (uintptr_t)sys_fork_return;
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/* For sysretq */
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NewThread->Registers.rcx = Frame->ReturnAddress;
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NewThread->Registers.r8 = Frame->StackPointer;
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#endif
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if (Thread->Security.IsCritical)
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NewThread->SetCritical(true);
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#ifdef a86
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NewThread->GSBase = NewThread->ShadowGSBase;
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NewThread->ShadowGSBase = Thread->ShadowGSBase;
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NewThread->FSBase = Thread->FSBase;
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#endif
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debug("ret addr: %#lx, stack: %#lx ip: %#lx", Frame->ReturnAddress,
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Frame->StackPointer, (uintptr_t)sys_fork_return);
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debug("Forked thread \"%s\"(%d) to \"%s\"(%d)",
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Thread->Name, Thread->ID,
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NewThread->Name, NewThread->ID);
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NewThread->State = Ready;
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NewThread->SetState(Ready);
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return (int)NewProcess->ID;
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}
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@ -25,23 +25,8 @@
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#include "../../syscalls.h"
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#include "../../kernel.h"
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#include "../../ipc.h"
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using InterProcessCommunication::IPC;
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using InterProcessCommunication::IPCID;
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using Tasking::PCB;
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using Tasking::TCB;
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using Tasking::TaskState::Ready;
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using Tasking::TaskState::Terminated;
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using namespace Memory;
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#define SysFrm SyscallsFrame
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#if defined(a64)
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typedef long arch_t;
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#elif defined(a32)
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typedef int arch_t;
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#endif
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/* https://pubs.opengroup.org/onlinepubs/009604499/functions/lseek.html */
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off_t sys_lseek(SysFrm *, int fildes,
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@ -24,24 +24,10 @@
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#include "../../syscalls.h"
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#include "../../kernel.h"
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#include "../../ipc.h"
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using InterProcessCommunication::IPC;
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using InterProcessCommunication::IPCID;
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using Tasking::PCB;
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using Tasking::TCB;
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using Tasking::TaskState::Ready;
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using Tasking::TaskState::Terminated;
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using namespace Memory;
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#define SysFrm SyscallsFrame
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#if defined(a64)
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typedef long arch_t;
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#elif defined(a32)
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typedef int arch_t;
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#endif
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/* https://pubs.opengroup.org/onlinepubs/009604499/functions/mmap.html */
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void *sys_mmap(SysFrm *,
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void *addr, size_t len,
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@ -103,8 +89,8 @@ void *sys_mmap(SysFrm *,
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(!m_Shared && !m_Private))
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return (void *)-EINVAL;
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Tasking::PCB *pcb = thisProcess;
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Memory::VirtualMemoryArea *vma = pcb->vma;
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PCB *pcb = thisProcess;
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VirtualMemoryArea *vma = pcb->vma;
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intptr_t ret = (intptr_t)vma->CreateCoWRegion(addr, len,
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p_Read, p_Write, p_Exec,
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m_Fixed, m_Shared);
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|
@ -25,24 +25,10 @@
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#include "../../syscalls.h"
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#include "../../kernel.h"
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#include "../../ipc.h"
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using InterProcessCommunication::IPC;
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using InterProcessCommunication::IPCID;
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using Tasking::PCB;
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using Tasking::TCB;
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using Tasking::TaskState::Ready;
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using Tasking::TaskState::Terminated;
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using namespace Memory;
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#define SysFrm SyscallsFrame
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#if defined(a64)
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typedef long arch_t;
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#elif defined(a32)
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typedef int arch_t;
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#endif
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|
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/* https://pubs.opengroup.org/onlinepubs/009604499/functions/mprotect.html */
|
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int sys_mprotect(SysFrm *,
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void *addr, size_t len, int prot)
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@ -58,16 +44,16 @@ int sys_mprotect(SysFrm *,
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bool p_Write = prot & sc_PROT_WRITE;
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// bool p_Exec = prot & sc_PROT_EXEC;
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Tasking::PCB *pcb = thisProcess;
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Memory::Virtual vmm = Memory::Virtual(pcb->PageTable);
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PCB *pcb = thisProcess;
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Virtual vmm = Virtual(pcb->PageTable);
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for (uintptr_t i = uintptr_t(addr);
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i < uintptr_t(addr) + len;
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i += PAGE_SIZE)
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{
|
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if (likely(!vmm.Check((void *)i, Memory::G)))
|
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if (likely(!vmm.Check((void *)i, G)))
|
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{
|
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Memory::PageTableEntry *pte = vmm.GetPTE(addr);
|
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PageTableEntry *pte = vmm.GetPTE(addr);
|
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if (!pte->Present ||
|
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(!pte->UserSupervisor && p_Read) ||
|
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(!pte->ReadWrite && p_Write))
|
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|
@ -25,24 +25,10 @@
|
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|
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#include "../../syscalls.h"
|
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#include "../../kernel.h"
|
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#include "../../ipc.h"
|
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|
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using InterProcessCommunication::IPC;
|
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using InterProcessCommunication::IPCID;
|
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using Tasking::PCB;
|
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using Tasking::TCB;
|
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using Tasking::TaskState::Ready;
|
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using Tasking::TaskState::Terminated;
|
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using namespace Memory;
|
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|
||||
#define SysFrm SyscallsFrame
|
||||
|
||||
#if defined(a64)
|
||||
typedef long arch_t;
|
||||
#elif defined(a32)
|
||||
typedef int arch_t;
|
||||
#endif
|
||||
|
||||
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/munmap.html */
|
||||
int sys_munmap(SysFrm *,
|
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void *addr, size_t len)
|
||||
@ -53,16 +39,16 @@ int sys_munmap(SysFrm *,
|
||||
if (len == 0)
|
||||
return -EINVAL;
|
||||
|
||||
Tasking::PCB *pcb = thisProcess;
|
||||
Memory::VirtualMemoryArea *vma = pcb->vma;
|
||||
Memory::Virtual vmm = Memory::Virtual(pcb->PageTable);
|
||||
PCB *pcb = thisProcess;
|
||||
VirtualMemoryArea *vma = pcb->vma;
|
||||
Virtual vmm = Virtual(pcb->PageTable);
|
||||
|
||||
for (uintptr_t i = uintptr_t(addr);
|
||||
i < uintptr_t(addr) + len;
|
||||
i += PAGE_SIZE)
|
||||
{
|
||||
if (likely(!vmm.Check((void *)i, Memory::G)))
|
||||
vmm.Remap((void *)i, (void *)i, Memory::P | Memory::RW);
|
||||
if (likely(!vmm.Check((void *)i, G)))
|
||||
vmm.Remap((void *)i, (void *)i, P | RW);
|
||||
else
|
||||
warn("%p is a global page", (void *)i);
|
||||
}
|
||||
|
@ -25,37 +25,23 @@
|
||||
|
||||
#include "../../syscalls.h"
|
||||
#include "../../kernel.h"
|
||||
#include "../../ipc.h"
|
||||
|
||||
using InterProcessCommunication::IPC;
|
||||
using InterProcessCommunication::IPCID;
|
||||
using Tasking::PCB;
|
||||
using Tasking::TCB;
|
||||
using Tasking::TaskState::Ready;
|
||||
using Tasking::TaskState::Terminated;
|
||||
using namespace Memory;
|
||||
|
||||
#define SysFrm SyscallsFrame
|
||||
|
||||
#if defined(a64)
|
||||
typedef long arch_t;
|
||||
#elif defined(a32)
|
||||
typedef int arch_t;
|
||||
#endif
|
||||
|
||||
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/open.html */
|
||||
int sys_open(SysFrm *,
|
||||
const char *path,
|
||||
int oflag, mode_t mode)
|
||||
{
|
||||
const char *safe_path = nullptr;
|
||||
Tasking::PCB *pcb = thisProcess;
|
||||
Memory::SmartHeap sh(512, pcb->vma);
|
||||
PCB *pcb = thisProcess;
|
||||
SmartHeap sh(512, pcb->vma);
|
||||
safe_path = (const char *)sh.Get();
|
||||
{
|
||||
Memory::SwapPT swap(pcb->PageTable);
|
||||
SwapPT swap(pcb->PageTable);
|
||||
size_t len = strlen(path);
|
||||
memcpy((void *)safe_path, path, len);
|
||||
memcpy((void *)safe_path, path, MAX(len, size_t(511)));
|
||||
}
|
||||
|
||||
function("%s, %d, %d", safe_path, oflag, mode);
|
||||
|
@ -25,31 +25,17 @@
|
||||
|
||||
#include "../../syscalls.h"
|
||||
#include "../../kernel.h"
|
||||
#include "../../ipc.h"
|
||||
|
||||
using InterProcessCommunication::IPC;
|
||||
using InterProcessCommunication::IPCID;
|
||||
using Tasking::PCB;
|
||||
using Tasking::TCB;
|
||||
using Tasking::TaskState::Ready;
|
||||
using Tasking::TaskState::Terminated;
|
||||
using namespace Memory;
|
||||
|
||||
#define SysFrm SyscallsFrame
|
||||
|
||||
#if defined(a64)
|
||||
typedef long arch_t;
|
||||
#elif defined(a32)
|
||||
typedef int arch_t;
|
||||
#endif
|
||||
|
||||
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/read.html */
|
||||
ssize_t sys_read(SysFrm *, int fildes,
|
||||
void *buf, size_t nbyte)
|
||||
{
|
||||
void *safe_buf = nullptr;
|
||||
Tasking::PCB *pcb = thisProcess;
|
||||
Memory::SmartHeap sh(nbyte, pcb->vma);
|
||||
PCB *pcb = thisProcess;
|
||||
SmartHeap sh(nbyte, pcb->vma);
|
||||
safe_buf = sh.Get();
|
||||
|
||||
function("%d, %p, %d", fildes, buf, nbyte);
|
||||
@ -61,7 +47,7 @@ ssize_t sys_read(SysFrm *, int fildes,
|
||||
return ret;
|
||||
|
||||
{
|
||||
Memory::SwapPT swap(pcb->PageTable);
|
||||
SwapPT swap(pcb->PageTable);
|
||||
memcpy(buf, safe_buf, nbyte);
|
||||
}
|
||||
return ret;
|
||||
|
81
syscalls/native/readlink.cpp
Normal file
81
syscalls/native/readlink.cpp
Normal file
@ -0,0 +1,81 @@
|
||||
/*
|
||||
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 <syscalls.hpp>
|
||||
|
||||
#include <memory.hpp>
|
||||
#include <utsname.h>
|
||||
#include <lock.hpp>
|
||||
#include <exec.hpp>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include "../../syscalls.h"
|
||||
#include "../../kernel.h"
|
||||
|
||||
using Tasking::PCB;
|
||||
using namespace Memory;
|
||||
|
||||
/* https://pubs.opengroup.org/onlinepubs/9699919799/functions/readlink.html */
|
||||
ssize_t sys_readlink(SysFrm *, const char *path, char *buf,
|
||||
size_t bufsize)
|
||||
{
|
||||
if (!path || !buf)
|
||||
return -EINVAL;
|
||||
|
||||
if (bufsize > PAGE_SIZE)
|
||||
{
|
||||
warn("bufsize is too large: %ld", bufsize);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
PCB *pcb = thisProcess;
|
||||
Memory::Virtual vmm(pcb->PageTable);
|
||||
if (!vmm.Check((void *)buf, Memory::US))
|
||||
{
|
||||
warn("Invalid address %#lx", buf);
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
const char *pPath = pcb->PageTable->Get(path);
|
||||
char *pBuf = pcb->PageTable->Get(buf);
|
||||
function("%s %#lx %ld", pPath, buf, bufsize);
|
||||
vfs::FileDescriptorTable *fdt = pcb->FileDescriptors;
|
||||
int fd = fdt->_open(pPath, O_RDONLY, 0);
|
||||
if (fd < 0)
|
||||
return -ENOENT;
|
||||
|
||||
vfs::FileDescriptorTable::Fildes fildes = fdt->GetDescriptor(fd);
|
||||
vfs::Node *node = fildes.Handle->node;
|
||||
fdt->_close(fd);
|
||||
|
||||
if (node->Type != vfs::NodeType::SYMLINK)
|
||||
return -EINVAL;
|
||||
|
||||
if (!node->Symlink)
|
||||
{
|
||||
warn("Symlink null for \"%s\"?", pPath);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
size_t len = strlen(node->Symlink);
|
||||
if (len > bufsize)
|
||||
len = bufsize;
|
||||
|
||||
strncpy(pBuf, node->Symlink, len);
|
||||
return len;
|
||||
}
|
69
syscalls/native/uname.cpp
Normal file
69
syscalls/native/uname.cpp
Normal file
@ -0,0 +1,69 @@
|
||||
/*
|
||||
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 <syscalls.hpp>
|
||||
|
||||
#include <memory.hpp>
|
||||
#include <utsname.h>
|
||||
#include <lock.hpp>
|
||||
#include <exec.hpp>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include "../../syscalls.h"
|
||||
#include "../../kernel.h"
|
||||
|
||||
using Tasking::PCB;
|
||||
using namespace Memory;
|
||||
|
||||
/* https://pubs.opengroup.org/onlinepubs/9699919799/functions/uname.html */
|
||||
int sys_uname(SysFrm *, struct utsname *buf)
|
||||
{
|
||||
assert(sizeof(struct utsname) < PAGE_SIZE);
|
||||
|
||||
Tasking::PCB *pcb = thisProcess;
|
||||
Memory::Virtual vmm(pcb->PageTable);
|
||||
|
||||
if (!vmm.Check(buf, Memory::US))
|
||||
{
|
||||
warn("Invalid address %#lx", buf);
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
auto pBuf = pcb->PageTable->Get(buf);
|
||||
|
||||
struct utsname uname =
|
||||
{
|
||||
/* TODO: This shouldn't be hardcoded */
|
||||
.sysname = KERNEL_NAME,
|
||||
.nodename = "fennix",
|
||||
.release = KERNEL_VERSION,
|
||||
.version = KERNEL_VERSION,
|
||||
#if defined(a64)
|
||||
.machine = "x86_64",
|
||||
#elif defined(a32)
|
||||
.machine = "i386",
|
||||
#elif defined(aa64)
|
||||
.machine = "arm64",
|
||||
#elif defined(aa32)
|
||||
.machine = "arm",
|
||||
#endif
|
||||
};
|
||||
|
||||
memcpy(pBuf, &uname, sizeof(struct utsname));
|
||||
return 0;
|
||||
}
|
@ -25,34 +25,20 @@
|
||||
|
||||
#include "../../syscalls.h"
|
||||
#include "../../kernel.h"
|
||||
#include "../../ipc.h"
|
||||
|
||||
using InterProcessCommunication::IPC;
|
||||
using InterProcessCommunication::IPCID;
|
||||
using Tasking::PCB;
|
||||
using Tasking::TCB;
|
||||
using Tasking::TaskState::Ready;
|
||||
using Tasking::TaskState::Terminated;
|
||||
using namespace Memory;
|
||||
|
||||
#define SysFrm SyscallsFrame
|
||||
|
||||
#if defined(a64)
|
||||
typedef long arch_t;
|
||||
#elif defined(a32)
|
||||
typedef int arch_t;
|
||||
#endif
|
||||
|
||||
/* https://pubs.opengroup.org/onlinepubs/009604499/functions/write.html */
|
||||
ssize_t sys_write(SysFrm *, int fildes,
|
||||
const void *buf, size_t nbyte)
|
||||
{
|
||||
const void *safe_buf = nullptr;
|
||||
Tasking::PCB *pcb = thisProcess;
|
||||
Memory::SmartHeap sh(nbyte, pcb->vma);
|
||||
PCB *pcb = thisProcess;
|
||||
SmartHeap sh(nbyte, pcb->vma);
|
||||
safe_buf = sh.Get();
|
||||
{
|
||||
Memory::SwapPT swap(pcb->PageTable);
|
||||
SwapPT swap(pcb->PageTable);
|
||||
memcpy((void *)safe_buf, buf, nbyte);
|
||||
}
|
||||
|
||||
|
Reference in New Issue
Block a user