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fork() stub and QoL improvements

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This commit is contained in:
Alex
2023-05-03 06:37:39 +03:00
parent 6e6d22403c
commit 61aea6aa8d
25 changed files with 426 additions and 185 deletions
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86
SystemCalls/Native.cpp
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@@ -25,7 +25,7 @@
#include "../syscalls.h"
#include "../kernel.h"
#include "../../Userspace/libs/include/sysbase.h"
#include "../../Userspace/libs/include/libsys/base.h" /* KCtl */
#include "../ipc.h"
using InterProcessCommunication::IPC;
@@ -315,6 +315,69 @@ static int sys_sleep(SyscallsFrame *Frame, uint64_t Milliseconds)
return 0;
}
static int _ChildPID = 0;
static int sys_fork(SyscallsFrame *Frame)
{
UNUSED(Frame);
if (!CheckTrust(TrustedByKernel | Trusted | Untrusted))
return SYSCALL_ACCESS_DENIED;
fixme("sys_fork: %#lx", Frame);
return SYSCALL_NOT_IMPLEMENTED;
Tasking::PCB *Parent = TaskManager->GetCurrentThread()->Parent;
Tasking::TCB *Thread = TaskManager->GetCurrentThread();
Tasking::PCB *NewProcess = TaskManager->CreateProcess(Parent,
Parent->Name,
Parent->Security.TrustLevel,
Parent->ELFSymbolTable ? Parent->ELFSymbolTable->GetImage() : nullptr);
if (!NewProcess)
{
error("Failed to create process for fork");
return SYSCALL_ERROR;
}
strncpy(NewProcess->Name, Parent->Name, sizeof(NewProcess->Name));
NewProcess->IPC->Fork(Parent->IPC); // FIXME: Do we need to do this?
Tasking::TCB *NewThread = TaskManager->CreateThread(NewProcess,
0,
nullptr,
nullptr,
std::vector<AuxiliaryVector>(),
0,
Thread->Info.Architecture,
Thread->Info.Compatibility,
true);
if (!NewThread)
{
error("Failed to create thread for fork");
return SYSCALL_ERROR;
}
_ChildPID = (int)NewThread->ID;
memcpy(NewThread->FPU, Thread->FPU, sizeof(CPU::x64::FXState));
NewThread->Stack->Fork(Thread->Stack);
strncpy(NewThread->Name, Thread->Name, sizeof(Thread->Name));
NewThread->Info = Thread->Info;
NewThread->GSBase = Thread->GSBase;
NewThread->FSBase = Thread->FSBase;
TaskManager->Sleep(10); /* Re-schedule */
NewThread->Registers = Thread->Registers;
debug("Forked thread \"%s\"(%d) from process \"%s\"(%d)", NewThread->Name, NewThread->ID, NewProcess->Name, NewProcess->ID);
NewThread->Status = Tasking::TaskStatus::Ready;
if (_ChildPID == (int)TaskManager->GetCurrentThread()->ID)
return 0;
return (int)NewThread->ID;
}
static int sys_wait(SyscallsFrame *Frame)
{
fixme("sys_wait: %#lx", Frame);
@@ -333,10 +396,12 @@ static int sys_spawn(SyscallsFrame *Frame)
return SYSCALL_NOT_IMPLEMENTED;
}
static int sys_spawn_thread(SyscallsFrame *Frame)
static int sys_spawn_thread(SyscallsFrame *Frame, uint64_t InstructionPointer)
{
fixme("sys_spawn_thread: %#lx", Frame);
return SYSCALL_NOT_IMPLEMENTED;
Tasking::TCB *thread = TaskManager->CreateThread(TaskManager->GetCurrentProcess(), InstructionPointer);
if (thread)
return (int)thread->ID;
return SYSCALL_ERROR;
}
static int sys_get_thread_list_of_process(SyscallsFrame *Frame)
@@ -357,6 +422,16 @@ static int sys_get_current_thread(SyscallsFrame *Frame)
return SYSCALL_NOT_IMPLEMENTED;
}
static int sys_get_current_process_id(SyscallsFrame *Frame)
{
return (int)TaskManager->GetCurrentProcess()->ID;
}
static int sys_get_current_thread_id(SyscallsFrame *Frame)
{
return (int)TaskManager->GetCurrentThread()->ID;
}
static int sys_get_process_by_pid(SyscallsFrame *Frame)
{
fixme("sys_get_process_by_pid: %#lx", Frame);
@@ -412,6 +487,7 @@ static void *NativeSyscallsTable[] = {
[_FileStatus] = (void *)sys_file_status,
[_Sleep] = (void *)sys_sleep,
[_Fork] = (void *)sys_fork,
[_Wait] = (void *)sys_wait,
[_Kill] = (void *)sys_kill,
[_Spawn] = (void *)sys_spawn,
@@ -419,6 +495,8 @@ static void *NativeSyscallsTable[] = {
[_GetThreadListOfProcess] = (void *)sys_get_thread_list_of_process,
[_GetCurrentProcess] = (void *)sys_get_current_process,
[_GetCurrentThread] = (void *)sys_get_current_thread,
[_GetCurrentProcessID] = (void *)sys_get_current_process_id,
[_GetCurrentThreadID] = (void *)sys_get_current_thread_id,
[_GetProcessByPID] = (void *)sys_get_process_by_pid,
[_GetThreadByTID] = (void *)sys_get_thread_by_tid,
[_KillProcess] = (void *)sys_kill_process,