mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 12:38:12 +00:00
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Process.h>
|
|
|
|
namespace Kernel {
|
|
|
|
KResultOr<FlatPtr> Process::sys$gethostname(Userspace<char*> buffer, size_t size)
|
|
{
|
|
VERIFY_NO_PROCESS_BIG_LOCK(this)
|
|
REQUIRE_PROMISE(stdio);
|
|
if (size > NumericLimits<ssize_t>::max())
|
|
return EINVAL;
|
|
return hostname().with_shared([&](const auto& name) -> KResultOr<FlatPtr> {
|
|
if (size < (name.length() + 1))
|
|
return ENAMETOOLONG;
|
|
TRY(copy_to_user(buffer, name.characters(), name.length() + 1));
|
|
return 0;
|
|
});
|
|
}
|
|
|
|
KResultOr<FlatPtr> Process::sys$sethostname(Userspace<const char*> buffer, size_t length)
|
|
{
|
|
VERIFY_NO_PROCESS_BIG_LOCK(this)
|
|
REQUIRE_NO_PROMISES;
|
|
if (!is_superuser())
|
|
return EPERM;
|
|
if (length > 64)
|
|
return ENAMETOOLONG;
|
|
return hostname().with_exclusive([&](auto& name) -> KResultOr<FlatPtr> {
|
|
auto name_or_error = try_copy_kstring_from_user(buffer, length);
|
|
if (name_or_error.is_error())
|
|
return name_or_error.error();
|
|
// FIXME: Use KString instead of String here.
|
|
name = name_or_error.value()->view();
|
|
return 0;
|
|
});
|
|
}
|
|
|
|
}
|