mirror of
https://github.com/Fennix-Project/Kernel.git
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66 lines
1.7 KiB
C++
66 lines
1.7 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 <syscalls.hpp>
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#include <memory.hpp>
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#include <lock.hpp>
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#include <exec.hpp>
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#include <errno.h>
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#include <debug.h>
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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/write.html */
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ssize_t sys_write(SysFrm *, int fildes,
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const void *buf, size_t nbyte)
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{
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const void *safe_buf = nullptr;
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Tasking::PCB *pcb = thisProcess;
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Memory::SmartHeap sh(nbyte, pcb->vma);
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safe_buf = sh.Get();
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{
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Memory::SwapPT swap(pcb->PageTable);
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memcpy((void *)safe_buf, buf, nbyte);
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}
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function("%d, %p, %d", fildes, buf, nbyte);
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vfs::FileDescriptorTable *fdt = pcb->FileDescriptors;
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ssize_t ret = fdt->_write(fildes, safe_buf, nbyte);
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if (ret)
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fdt->_lseek(fildes, ret, SEEK_CUR);
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return ret;
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}
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