diff --git a/Userland/lsinterrupts.cpp b/Userland/lsinterrupts.cpp new file mode 100644 index 0000000000..39b0d64b3e --- /dev/null +++ b/Userland/lsinterrupts.cpp @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2020, Liav A. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include + +int main(int argc, char** argv) +{ + UNUSED_PARAM(argc); + UNUSED_PARAM(argv); + + if (pledge("stdio rpath", nullptr) < 0) { + perror("pledge"); + return 1; + } + + if (unveil("/proc/interrupts", "r") < 0) { + perror("unveil"); + return 1; + } + + unveil(nullptr, nullptr); + + auto proc_interrupts = Core::File::construct("/proc/interrupts"); + if (!proc_interrupts->open(Core::IODevice::ReadOnly)) { + fprintf(stderr, "Error: %s\n", proc_interrupts->error_string()); + return 1; + } + + if (pledge("stdio", nullptr) < 0) { + perror("pledge"); + return 1; + } + + printf("%-18s %-10s %-13s\n", "Device", "Interrupt", "Call Counter"); + auto file_contents = proc_interrupts->read_all(); + auto json = JsonValue::from_string(file_contents).as_array(); + json.for_each([](auto& value) { + auto handler = value.as_object(); + auto purpose = handler.get("purpose").to_string(); + auto interrupt = handler.get("interrupt_line").to_string(); + auto call_count = handler.get("call_count").to_string(); + + printf("%-18s %-10s %-13s\n", + purpose.characters(), interrupt.characters(), call_count.characters()); + }); + + return 0; +}