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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* 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 <AK/HashMap.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/ProcessStatisticsReader.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static int pid_of(const String& process_name, bool single_shot, bool omit_pid, pid_t pid)
{
bool displayed_at_least_one = false;
auto processes = Core::ProcessStatisticsReader().get_all();
if (!processes.has_value())
return 1;
for (auto& it : processes.value()) {
if (it.value.name == process_name) {
if (!omit_pid || it.value.pid != pid) {
printf(" %d" + (displayed_at_least_one ? 0 : 1), it.value.pid);
displayed_at_least_one = true;
if (single_shot)
break;
}
}
}
if (displayed_at_least_one)
printf("\n");
return 0;
}
int main(int argc, char** argv)
{
bool single_shot = false;
const char* omit_pid_value = nullptr;
const char* process_name = nullptr;
Core::ArgsParser args_parser;
args_parser.add_option(single_shot, "Only return one pid", nullptr, 's');
args_parser.add_option(omit_pid_value, "Omit the given PID, or the parent process if the special value %PPID is passed", nullptr, 'o', "pid");
args_parser.add_positional_argument(process_name, "Process name to search for", "process-name");
args_parser.parse(argc, argv);
pid_t pid_to_omit = 0;
if (omit_pid_value) {
if (!strcmp(omit_pid_value, "%PPID")) {
pid_to_omit = getppid();
} else {
auto number = StringView(omit_pid_value).to_uint();
if (!number.has_value()) {
fprintf(stderr, "Invalid value for -o\n");
args_parser.print_usage(stderr, argv[0]);
return 1;
}
pid_to_omit = number.value();
}
}
return pid_of(process_name, single_shot, omit_pid_value != nullptr, pid_to_omit);
}
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