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