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Kernel: Use custody_for_dirfd() in more syscalls

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This simplifies a lot of syscalls, some of which were doing very
unnecessarily verbose things instead of calling this.
This commit is contained in:
Andreas Kling 2023-04-03 15:59:10 +02:00
parent f0c9c5e076
commit 97ac4601f5
6 changed files with 7 additions and 87 deletions
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13
Kernel/Syscalls/stat.cpp
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@ -28,18 +28,7 @@ ErrorOr<FlatPtr> Process::sys$stat(Userspace<Syscall::SC_stat_params const*> use
auto params = TRY(copy_typed_from_user(user_params));
auto path = TRY(get_syscall_path_argument(params.path));
RefPtr<Custody> base;
if (params.dirfd == AT_FDCWD) {
base = current_directory();
} else {
auto base_description = TRY(open_file_description(params.dirfd));
if (!base_description->is_directory())
return ENOTDIR;
if (!base_description->custody())
return EINVAL;
base = base_description->custody();
}
auto base = TRY(custody_for_dirfd(params.dirfd));
auto metadata = TRY(VirtualFileSystem::the().lookup_metadata(credentials(), path->view(), *base, params.follow_symlinks ? 0 : O_NOFOLLOW_NOERROR));
auto statbuf = TRY(metadata.stat());
TRY(copy_to_user(params.statbuf, &statbuf));