mirror of
https://github.com/LadybirdBrowser/ladybird.git
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91 lines
3.2 KiB
C++
91 lines
3.2 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 <AK/Types.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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pid_t Process::sys$getpid()
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{
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REQUIRE_PROMISE(stdio);
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return m_pid.value();
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}
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pid_t Process::sys$getppid()
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{
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REQUIRE_PROMISE(stdio);
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return m_ppid.value();
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}
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int Process::sys$get_process_name(Userspace<char*> buffer, size_t buffer_size)
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{
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REQUIRE_PROMISE(stdio);
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if (m_name.length() + 1 > buffer_size)
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return -ENAMETOOLONG;
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if (!copy_to_user(buffer, m_name.characters(), m_name.length() + 1))
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return -EFAULT;
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return 0;
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}
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int Process::sys$set_process_name(Userspace<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 = 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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// Empty and whitespace-only names only exist to confuse users.
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if (name.is_whitespace())
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return -EINVAL;
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m_name = move(name);
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return 0;
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}
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int Process::sys$set_coredump_metadata(Userspace<const Syscall::SC_set_coredump_metadata_params*> user_params)
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{
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Syscall::SC_set_coredump_metadata_params params;
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if (!copy_from_user(¶ms, user_params))
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return -EFAULT;
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if (params.key.length == 0 || params.key.length > 16 * KiB)
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return -EINVAL;
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if (params.value.length > 16 * KiB)
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return -EINVAL;
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auto copied_key = copy_string_from_user(params.key.characters, params.key.length);
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if (copied_key.is_null())
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return -EFAULT;
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auto copied_value = copy_string_from_user(params.value.characters, params.value.length);
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if (copied_value.is_null())
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return -EFAULT;
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if (!m_coredump_metadata.contains(copied_key) && m_coredump_metadata.size() >= 16)
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return -EFAULT;
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m_coredump_metadata.set(move(copied_key), move(copied_value));
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return 0;
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}
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}
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