mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-05-25 20:42:55 +00:00
a9204510a4
Instead of checking it at every call site (to generate EBADF), we make file_description(fd) return a KResultOr<NonnullRefPtr<FileDescription>>. This allows us to wrap all the calls in TRY(). :^) The only place that got a little bit messier from this is sys$mount(), and there's a whole bunch of things there in need of cleanup.
52 lines
1.4 KiB
C++
52 lines
1.4 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Debug.h>
|
|
#include <Kernel/FileSystem/FileDescription.h>
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
KResultOr<FlatPtr> Process::sys$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().file_description(fd));
|
|
// NOTE: The FD flags are not shared between FileDescription 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:
|
|
return description->get_flock(Userspace<flock*>(arg));
|
|
case F_SETLK:
|
|
return description->apply_flock(Process::current(), Userspace<const flock*>(arg));
|
|
default:
|
|
return EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
}
|