mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-22 10:59:51 +03:00
79fa9765ca
We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace! This was a slightly tedious refactoring that took a long time, so it's not unlikely that some bugs crept in. Nevertheless, it does pass basic functionality testing, and it's just real nice to finally see the same pattern in all contexts. :^)
55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Debug.h>
|
|
#include <Kernel/FileSystem/OpenFileDescription.h>
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
ErrorOr<FlatPtr> Process::sys$fcntl(int fd, int cmd, u32 arg)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
|
|
REQUIRE_PROMISE(stdio);
|
|
dbgln_if(IO_DEBUG, "sys$fcntl: fd={}, cmd={}, arg={}", fd, cmd, arg);
|
|
auto description = TRY(fds().open_file_description(fd));
|
|
// NOTE: The FD flags are not shared between OpenFileDescription objects.
|
|
// This means that dup() doesn't copy the FD_CLOEXEC flag!
|
|
switch (cmd) {
|
|
case F_DUPFD: {
|
|
int arg_fd = (int)arg;
|
|
if (arg_fd < 0)
|
|
return EINVAL;
|
|
auto fd_allocation = TRY(m_fds.allocate(arg_fd));
|
|
m_fds[fd_allocation.fd].set(*description);
|
|
return fd_allocation.fd;
|
|
}
|
|
case F_GETFD:
|
|
return m_fds[fd].flags();
|
|
case F_SETFD:
|
|
m_fds[fd].set_flags(arg);
|
|
break;
|
|
case F_GETFL:
|
|
return description->file_flags();
|
|
case F_SETFL:
|
|
description->set_file_flags(arg);
|
|
break;
|
|
case F_ISTTY:
|
|
return description->is_tty();
|
|
case F_GETLK:
|
|
TRY(description->get_flock(Userspace<flock*>(arg)));
|
|
return 0;
|
|
case F_SETLK:
|
|
TRY(description->apply_flock(Process::current(), Userspace<const flock*>(arg)));
|
|
return 0;
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
}
|