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dmesg: Port to LibMain :^)

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This commit is contained in:
Andreas Kling 2021-11-23 15:44:17 +01:00
parent e6579e7029
commit 6386b54746
2 changed files with 10 additions and 21 deletions
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1
Userland/Utilities/CMakeLists.txt
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@ -61,6 +61,7 @@ target_link_libraries(config LibConfig)
target_link_libraries(copy LibGUI) target_link_libraries(copy LibGUI)
target_link_libraries(diff LibDiff) target_link_libraries(diff LibDiff)
target_link_libraries(disasm LibX86) target_link_libraries(disasm LibX86)
target_link_libraries(dmesg LibMain)
target_link_libraries(expr LibRegex) target_link_libraries(expr LibRegex)
target_link_libraries(fdtdump LibDeviceTree) target_link_libraries(fdtdump LibDeviceTree)
target_link_libraries(file LibGfx LibIPC LibCompress) target_link_libraries(file LibGfx LibIPC LibCompress)

30
Userland/Utilities/dmesg.cpp
View file

@ -1,33 +1,21 @@
/* /*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org> * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* *
* SPDX-License-Identifier: BSD-2-Clause * SPDX-License-Identifier: BSD-2-Clause
*/ */
#include <LibCore/File.h> #include <LibCore/File.h>
#include <stdio.h> #include <LibCore/System.h>
#include <unistd.h> #include <LibMain/Main.h>
int main([[maybe_unused]] int argc, [[maybe_unused]] char** argv) ErrorOr<int> serenity_main(Main::Arguments)
{ {
if (pledge("stdio rpath", nullptr) < 0) { TRY(Core::System::pledge("stdio rpath", nullptr));
perror("pledge"); TRY(Core::System::unveil("/proc/dmesg", "r"));
return 1; TRY(Core::System::unveil(nullptr, nullptr));
}
if (unveil("/proc/dmesg", "r") < 0) { auto file = TRY(Core::File::open("/proc/dmesg", Core::OpenMode::ReadOnly));
perror("unveil");
return 1;
}
unveil(nullptr, nullptr);
auto file = Core::File::construct("/proc/dmesg");
if (!file->open(Core::OpenMode::ReadOnly)) {
warnln("Failed to open {}: {}", file->name(), file->error_string());
return 1;
}
auto buffer = file->read_all(); auto buffer = file->read_all();
out("{}", String::copy(buffer)); out("{}", StringView { buffer });
return 0; return 0;
} }