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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/FileSystem/VirtualFileSystem.h>
#include <Kernel/Process.h>
#include <Kernel/Time/TimeManagement.h>
namespace Kernel {
ErrorOr<FlatPtr> Process::sys$sysconf(int name)
{
VERIFY_NO_PROCESS_BIG_LOCK(this);
switch (name) {
case _SC_MONOTONIC_CLOCK:
return 1;
case _SC_NPROCESSORS_CONF:
case _SC_NPROCESSORS_ONLN:
return Processor::count();
case _SC_OPEN_MAX:
return OpenFileDescriptions::max_open();
case _SC_PAGESIZE:
return PAGE_SIZE;
case _SC_HOST_NAME_MAX:
return HOST_NAME_MAX;
case _SC_TTY_NAME_MAX:
return TTY_NAME_MAX;
case _SC_GETPW_R_SIZE_MAX:
return 4096; // idk
case _SC_CLK_TCK:
return TimeManagement::the().ticks_per_second();
case _SC_SYMLOOP_MAX:
return Kernel::VirtualFileSystem::symlink_recursion_limit;
case _SC_ARG_MAX:
return Process::max_arguments_size;
case _SC_IOV_MAX:
return IOV_MAX;
default:
return EINVAL;
}
}
}
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