Update kernel

storage/devices/tty/ptmx.cpp

@@ -0,0 +1,92 @@
+/*
+	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 <filesystem/mounts.hpp>
+#include <filesystem/ioctl.hpp>
+#include <smp.hpp>
+#include <errno.h>
+
+#include "../../../kernel.h"
+
+namespace vfs
+{
+	int PTMXDevice::open(int Flags, mode_t Mode)
+	{
+		SmartLock(PTMXLock);
+		int id = -1;
+		for (size_t i = 0; i < ptysId.Size; i++)
+		{
+			if (unlikely(ptysId.Buffer[i] == false))
+			{
+				id = int(i);
+				ptysId.Buffer[i] = true;
+				break;
+			}
+		}
+
+		if (id == -1)
+			return -ENFILE;
+
+		PTYDevice *pty = new PTYDevice(pts, id);
+		ptysList.push_back(pty);
+		return pty->OpenMaster(Flags, Mode);
+	}
+
+	void PTMXDevice::RemovePTY(int fd, Tasking::PCB *pcb)
+	{
+		SmartLock(PTMXLock);
+		if (!pcb)
+			pcb = thisProcess;
+		assert(pcb != nullptr);
+
+		FileDescriptorTable *fdt = pcb->FileDescriptors;
+		RefNode *node = fdt->GetRefNode(fd);
+
+		assert(node->SpecialData != nullptr);
+		PTYDevice *pty = (PTYDevice *)node->SpecialData;
+		int id = pty->ptyId;
+
+		forItr(itr, ptysList)
+		{
+			if (*itr != pty)
+				continue;
+
+			ptysList.erase(itr);
+			delete *itr;
+			break;
+		}
+		ptysId.Buffer[id] = false;
+	}
+
+	PTMXDevice::PTMXDevice() : Node(DevFS, "ptmx", CHARDEVICE)
+	{
+		this->Mode = 0644;
+		this->UserIdentifier = 0;
+		this->GroupIdentifier = 0;
+		pts = new Node(DevFS, "pts", DIRECTORY);
+
+		ptysId.Buffer = new uint8_t[0x1000];
+		ptysId.Size = 0x1000;
+	}
+
+	PTMXDevice::~PTMXDevice()
+	{
+		SmartLock(PTMXLock);
+		delete pts;
+		delete[] ptysId.Buffer;
+	}
+}