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Kernel: Move syscall implementations out of Process.cpp
This is something I've been meaning to do for a long time, and here we finally go. This patch moves all sys$foo functions out of Process.cpp and into files in Kernel/Syscalls/. It's not exactly one syscall per file (although it could be, but I got a bit tired of the repetitive work here..) This makes hacking on individual syscalls a lot less painful since you don't have to rebuild nearly as much code every time. I'm also hopeful that this makes it easier to understand individual syscalls. :^)
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73 changed files with 6774 additions and 4485 deletions
97
Kernel/Syscalls/getuid.cpp
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97
Kernel/Syscalls/getuid.cpp
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <Kernel/Process.h>
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namespace Kernel {
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uid_t Process::sys$getuid()
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{
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REQUIRE_PROMISE(stdio);
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return m_uid;
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}
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gid_t Process::sys$getgid()
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{
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REQUIRE_PROMISE(stdio);
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return m_gid;
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}
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uid_t Process::sys$geteuid()
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{
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REQUIRE_PROMISE(stdio);
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return m_euid;
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}
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gid_t Process::sys$getegid()
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{
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REQUIRE_PROMISE(stdio);
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return m_egid;
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}
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int Process::sys$getresuid(uid_t* ruid, uid_t* euid, uid_t* suid)
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{
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REQUIRE_PROMISE(stdio);
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if (!validate_write_typed(ruid) || !validate_write_typed(euid) || !validate_write_typed(suid))
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return -EFAULT;
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copy_to_user(ruid, &m_uid);
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copy_to_user(euid, &m_euid);
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copy_to_user(suid, &m_suid);
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return 0;
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}
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int Process::sys$getresgid(gid_t* rgid, gid_t* egid, gid_t* sgid)
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{
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REQUIRE_PROMISE(stdio);
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if (!validate_write_typed(rgid) || !validate_write_typed(egid) || !validate_write_typed(sgid))
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return -EFAULT;
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copy_to_user(rgid, &m_gid);
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copy_to_user(egid, &m_egid);
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copy_to_user(sgid, &m_sgid);
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return 0;
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}
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int Process::sys$getgroups(ssize_t count, gid_t* user_gids)
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{
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REQUIRE_PROMISE(stdio);
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if (count < 0)
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return -EINVAL;
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if (!count)
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return m_extra_gids.size();
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if (count != (int)m_extra_gids.size())
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return -EINVAL;
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if (!validate_write_typed(user_gids, m_extra_gids.size()))
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return -EFAULT;
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Vector<gid_t> gids;
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for (auto gid : m_extra_gids)
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gids.append(gid);
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copy_to_user(user_gids, gids.data(), sizeof(gid_t) * count);
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return 0;
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}
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}
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