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https://github.com/RGBCube/serenity
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1682b0b6d8
The only requirement for this syscall is to make Process::m_coredump_properties SpinlockProtected.
66 lines
1.9 KiB
C++
66 lines
1.9 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 <AK/Types.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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ErrorOr<FlatPtr> Process::sys$getpid()
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this)
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TRY(require_promise(Pledge::stdio));
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return pid().value();
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}
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ErrorOr<FlatPtr> Process::sys$getppid()
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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TRY(require_promise(Pledge::stdio));
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return m_protected_values.ppid.value();
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}
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ErrorOr<FlatPtr> Process::sys$get_process_name(Userspace<char*> buffer, size_t buffer_size)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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TRY(require_promise(Pledge::stdio));
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if (m_name->length() + 1 > buffer_size)
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return ENAMETOOLONG;
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TRY(copy_to_user(buffer, m_name->characters(), m_name->length() + 1));
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return 0;
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}
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ErrorOr<FlatPtr> Process::sys$set_process_name(Userspace<char const*> user_name, size_t user_name_length)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
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TRY(require_promise(Pledge::proc));
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if (user_name_length > 256)
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return ENAMETOOLONG;
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auto name = TRY(try_copy_kstring_from_user(user_name, user_name_length));
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// Empty and whitespace-only names only exist to confuse users.
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if (name->view().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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ErrorOr<FlatPtr> Process::sys$set_coredump_metadata(Userspace<Syscall::SC_set_coredump_metadata_params const*> user_params)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this)
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auto params = TRY(copy_typed_from_user(user_params));
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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 key = TRY(try_copy_kstring_from_user(params.key));
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auto value = TRY(try_copy_kstring_from_user(params.value));
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TRY(set_coredump_property(move(key), move(value)));
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return 0;
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}
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}
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