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Kernel: Only open a single description for stdio in non-fork processes

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This commit is contained in:
Andreas Kling 2020-01-25 17:05:02 +01:00
parent 603bf6fb4a
commit 7cc0b18f65
1 changed files with 4 additions and 3 deletions
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7
Kernel/Process.cpp
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@ -1210,9 +1210,10 @@ Process* Process::create_user_process(Thread*& first_thread, const String& path,
auto* process = new Process(first_thread, parts.take_last(), uid, gid, parent_pid, Ring3, move(cwd), nullptr, tty); auto* process = new Process(first_thread, parts.take_last(), uid, gid, parent_pid, Ring3, move(cwd), nullptr, tty);
process->m_fds.resize(m_max_open_file_descriptors); process->m_fds.resize(m_max_open_file_descriptors);
auto& device_to_use_as_tty = tty ? (CharacterDevice&)*tty : NullDevice::the(); auto& device_to_use_as_tty = tty ? (CharacterDevice&)*tty : NullDevice::the();
process->m_fds[0].set(*device_to_use_as_tty.open(O_RDONLY).value()); auto description = device_to_use_as_tty.open(O_RDWR).value();
process->m_fds[1].set(*device_to_use_as_tty.open(O_WRONLY).value()); process->m_fds[0].set(*description);
process->m_fds[2].set(*device_to_use_as_tty.open(O_WRONLY).value()); process->m_fds[1].set(*description);
process->m_fds[2].set(*description);
error = process->exec(path, move(arguments), move(environment)); error = process->exec(path, move(arguments), move(environment));
if (error != 0) { if (error != 0) {