mirror of
https://github.com/SerenityOS/serenity
synced 2024-09-20 00:12:20 +00:00
b4a7d148b1
Move the definitions for maximum argument and environment size to Process.h from execve.cpp. This allows sysconf(_SC_ARG_MAX) to return the actual argument maximum of 128 KiB to userspace.
44 lines
1.1 KiB
C++
44 lines
1.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/FileSystem/VirtualFileSystem.h>
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#include <Kernel/Process.h>
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#include <Kernel/Time/TimeManagement.h>
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namespace Kernel {
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ErrorOr<FlatPtr> Process::sys$sysconf(int name)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this)
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switch (name) {
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case _SC_MONOTONIC_CLOCK:
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return 1;
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case _SC_NPROCESSORS_CONF:
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case _SC_NPROCESSORS_ONLN:
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return Processor::count();
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case _SC_OPEN_MAX:
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return OpenFileDescriptions::max_open();
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case _SC_PAGESIZE:
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return PAGE_SIZE;
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case _SC_HOST_NAME_MAX:
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return HOST_NAME_MAX;
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case _SC_TTY_NAME_MAX:
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return TTY_NAME_MAX;
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case _SC_GETPW_R_SIZE_MAX:
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return 4096; // idk
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case _SC_CLK_TCK:
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return TimeManagement::the().ticks_per_second();
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case _SC_SYMLOOP_MAX:
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return Kernel::VirtualFileSystem::symlink_recursion_limit;
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case _SC_ARG_MAX:
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return Process::max_arguments_size;
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default:
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return EINVAL;
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}
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}
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}
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