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949aef4aef
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. :^)
87 lines
2.7 KiB
C++
87 lines
2.7 KiB
C++
/*
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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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#include <Kernel/SharedBuffer.h>
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namespace Kernel {
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pid_t Process::sys$getpid()
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{
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REQUIRE_PROMISE(stdio);
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return m_pid;
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}
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pid_t Process::sys$getppid()
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{
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REQUIRE_PROMISE(stdio);
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return m_ppid;
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}
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int Process::sys$set_process_icon(int icon_id)
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{
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REQUIRE_PROMISE(shared_buffer);
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LOCKER(shared_buffers().lock());
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auto it = shared_buffers().resource().find(icon_id);
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if (it == shared_buffers().resource().end())
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return -EINVAL;
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auto& shared_buffer = *(*it).value;
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if (!shared_buffer.is_shared_with(m_pid))
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return -EPERM;
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m_icon_id = icon_id;
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return 0;
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}
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int Process::sys$get_process_name(char* buffer, int buffer_size)
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{
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REQUIRE_PROMISE(stdio);
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if (buffer_size <= 0)
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return -EINVAL;
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if (!validate_write(buffer, buffer_size))
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return -EFAULT;
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if (m_name.length() + 1 > (size_t)buffer_size)
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return -ENAMETOOLONG;
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copy_to_user(buffer, m_name.characters(), m_name.length() + 1);
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return 0;
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}
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int Process::sys$set_process_name(const char* user_name, size_t user_name_length)
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{
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REQUIRE_PROMISE(proc);
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if (user_name_length > 256)
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return -ENAMETOOLONG;
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auto name = validate_and_copy_string_from_user(user_name, user_name_length);
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if (name.is_null())
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return -EFAULT;
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m_name = move(name);
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return 0;
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}
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}
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