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https://github.com/RGBCube/serenity
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2a78bf8596
The Process::Handler type has KResultOr<FlatPtr> as its return type. Using a different return type with an equally-sized template parameter sort of works but breaks once that condition is no longer true, e.g. for KResultOr<int> on x86_64. Ideally the syscall handlers would also take FlatPtrs as their args so we can get rid of the reinterpret_cast for the function pointer but I didn't quite feel like cleaning that up as well.
34 lines
815 B
C++
34 lines
815 B
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/Process.h>
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namespace Kernel {
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KResultOr<FlatPtr> Process::sys$uname(Userspace<utsname*> user_buf)
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{
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extern String* g_hostname;
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extern Lock* g_hostname_lock;
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REQUIRE_PROMISE(stdio);
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Locker locker(*g_hostname_lock, Lock::Mode::Shared);
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if (g_hostname->length() + 1 > sizeof(utsname::nodename))
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return ENAMETOOLONG;
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utsname buf {};
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memcpy(buf.sysname, "SerenityOS", 11);
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memcpy(buf.release, "1.0-dev", 8);
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memcpy(buf.version, "FIXME", 6);
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memcpy(buf.machine, "i686", 5);
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memcpy(buf.nodename, g_hostname->characters(), g_hostname->length() + 1);
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if (!copy_to_user(user_buf, &buf))
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return EFAULT;
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return 0;
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}
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}
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