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355a113
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permissioner
permissionerd
src
permissionerd.cpp
add copyright & license
Stefan Schuermans
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355a113
at 2020-09-17 19:23:53
permissionerd.cpp
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/** * Permissioner: set file ownerships and permissions * Copyright 2020: Stefan Schuermans, Aachen, Germany <stefan@schuermans.info> * Copyleft: GNU GENERAL PUBLIC LICENSE version 3 (see LICENSE) */ #include <permissioner/Config.h> #include <chrono> #include <csignal> #include <cstdlib> #include <iostream> #include <stdexcept> #include <string> #include <thread> static int go_on = 1; void sighandler(int) { go_on = 0; } int main(int argc, char const **argv) { if (argc != 2) { std::cerr << "usage: " << argv[0] << " <config file>" << std::endl; return EXIT_FAILURE; } std::string configFileName(argv[1]); // load configuration Config config; try { config.parseFile(configFileName); } catch (std::exception const &e) { std::cerr << "error: " << e.what() << std::endl; return EXIT_FAILURE; } // catch signals to exit properly on Ctrl-C and so on signal(SIGINT, sighandler); signal(SIGPIPE, sighandler); signal(SIGQUIT, sighandler); signal(SIGTERM, sighandler); std::cout << "permissionerd (" << configFileName << ") starting" << std::endl; // continuously set ownership and permissions int ret = EXIT_SUCCESS; while (go_on) { // set owneship and permissions, measure time it takes std::cout << "permissionerd (" << configFileName << "): setting ownership and permissions" << std::endl; auto begin = std::chrono::steady_clock::now(); try { config.setPermissions(); } catch (std::exception const &e) { std::cerr << "error: " << e.what() << std::endl; ret = EXIT_FAILURE; break; } auto end = std::chrono::steady_clock::now(); std::chrono::duration<float, std::ratio<1>> duration = end - begin; std::cout << "permissionerd (" << configFileName << "): took " << duration.count() << " s" << std::endl; // sleep 10 times as long as the work took plus one second auto sleep_time = 10 * duration + std::chrono::duration<int, std::ratio<1>>(1); std::this_thread::sleep_for(sleep_time); } // while (go_on) std::cout << "permissionerd (" << configFileName << ") shutting down" << std::endl; return ret; }