mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-29 19:10:26 +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$mount(), and there's a whole bunch of things there in need of cleanup.
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
|
|
* Copyright (c) 2021, Justin Mietzner <sw1tchbl4d3@sw1tchbl4d3.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/FileSystem/Custody.h>
|
|
#include <Kernel/FileSystem/VirtualFileSystem.h>
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
KResultOr<FlatPtr> Process::do_statvfs(String path, statvfs* buf)
|
|
{
|
|
auto custody = TRY(VirtualFileSystem::the().resolve_path(path, current_directory(), nullptr, 0));
|
|
auto& inode = custody->inode();
|
|
auto& fs = inode.fs();
|
|
|
|
statvfs kernelbuf = {};
|
|
|
|
kernelbuf.f_bsize = static_cast<u64>(fs.block_size());
|
|
kernelbuf.f_frsize = fs.fragment_size();
|
|
kernelbuf.f_blocks = fs.total_block_count();
|
|
kernelbuf.f_bfree = fs.free_block_count();
|
|
|
|
// FIXME: Implement "available blocks" into Filesystem
|
|
kernelbuf.f_bavail = fs.free_block_count();
|
|
|
|
kernelbuf.f_files = fs.total_inode_count();
|
|
kernelbuf.f_ffree = fs.free_inode_count();
|
|
kernelbuf.f_favail = fs.free_inode_count(); // FIXME: same as f_bavail
|
|
|
|
kernelbuf.f_fsid = 0; // FIXME: Implement "Filesystem ID" into Filesystem
|
|
|
|
kernelbuf.f_namemax = 255;
|
|
|
|
Custody* current_custody = custody;
|
|
|
|
while (current_custody) {
|
|
VirtualFileSystem::the().for_each_mount([&kernelbuf, ¤t_custody](auto& mount) {
|
|
if (current_custody) {
|
|
if (¤t_custody->inode() == &mount.guest()) {
|
|
int mountflags = mount.flags();
|
|
int flags = 0;
|
|
if (mountflags & MS_RDONLY)
|
|
flags = flags | ST_RDONLY;
|
|
if (mountflags & MS_NOSUID)
|
|
flags = flags | ST_NOSUID;
|
|
|
|
kernelbuf.f_flag = flags;
|
|
current_custody = nullptr;
|
|
}
|
|
}
|
|
});
|
|
|
|
if (current_custody) {
|
|
current_custody = current_custody->parent();
|
|
}
|
|
}
|
|
|
|
return copy_to_user(buf, &kernelbuf);
|
|
}
|
|
|
|
KResultOr<FlatPtr> Process::sys$statvfs(Userspace<const Syscall::SC_statvfs_params*> user_params)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
|
|
REQUIRE_PROMISE(rpath);
|
|
auto params = TRY(copy_typed_from_user(user_params));
|
|
|
|
auto path = TRY(get_syscall_path_argument(params.path));
|
|
return do_statvfs(path->view(), params.buf);
|
|
}
|
|
|
|
KResultOr<FlatPtr> Process::sys$fstatvfs(int fd, statvfs* buf)
|
|
{
|
|
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
|
|
REQUIRE_PROMISE(stdio);
|
|
|
|
auto description = TRY(fds().file_description(fd));
|
|
return do_statvfs(description->absolute_path(), buf);
|
|
}
|
|
|
|
}
|