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// Spectre 2 |
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// |
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// Douglas Thrift |
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// |
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// $Id$ |
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|
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#include "Mounter.hpp" |
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#include "Unmounter.hpp" |
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|
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#include <menes-api/exename.hpp> |
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#include <menes-app/simple.hpp> |
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|
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#include <sys/types.h> |
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#include <signal.h> |
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|
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int Main(const app::Options& options) |
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{ |
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api::Path config(Spectre2::prefix + "/etc/spectre.xml"); |
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enum Mode { none, pid = 1, fork } mode(none); |
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|
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_foreach (const app::ArgumentList, arg, app::GetArguments()) |
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{ |
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Matcher matcher; |
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|
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if (*arg == matcher("^-config=(.*)$")) |
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config = matcher[1]; |
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else if (*arg == "-pid") |
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mode = pid; |
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else if (*arg == "-fork") |
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mode = fork; |
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else if (*arg == "-D") |
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Spectre2::debug = true; |
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else |
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{ |
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api::Cerr << "Usage: " << Spectre2::program << " [-config=config] [-pid|-fork] [-D]" << ios::NewLine; |
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|
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return 1; |
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} |
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} |
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|
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if (!config.Exists()) |
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{ |
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api::Cerr << Spectre2::program << ": configuration file " << config.GetPath() << " does not exist." << ios::NewLine; |
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|
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return 2; |
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} |
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|
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switch (mode) |
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{ |
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case pid: |
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try |
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{ |
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_H<xml::Document> document(xml::Parse(config.GetPath())); |
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api::FileReader in(*document/"spectre"/"pid"); |
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|
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ios::ReadToWrite(in, api::Cout); |
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} |
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catch (const api::Error&) |
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{ |
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return 1; |
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} |
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break; |
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case fork: |
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if (api::Posix::CheckError(::fork())) |
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return 0; |
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default: |
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{ |
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Spectre2 spectre(config); |
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} |
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} |
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|
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return 0; |
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} |
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|
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extern "C" |
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{ |
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void reload(int signal, ::siginfo_t* info, void* uap); |
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void stop(int signal, ::siginfo_t* info, void* uap); |
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} |
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|
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Spectre2::Spectre2(const api::Path& config) |
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{ |
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{ |
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_H<xml::Document> document(xml::Parse(config.GetPath())); |
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_H<xml::Node> spectre(*document/"spectre"); |
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|
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pid = *spectre/"pid"; |
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|
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if (!(*spectre/"prefix").IsEmpty()) |
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prefix = *spectre/"prefix"; |
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|
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if (!(*spectre/"root").IsEmpty()) |
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root = *spectre/"root"; |
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|
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if (!(*spectre/"mount").IsEmpty()) |
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mount = *spectre/"mount"; |
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} |
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|
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{ |
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api::FileWriter out(pid); |
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ios::FormatWriter fout(out); |
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|
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fout << ::getpid() << ios::NewLine; |
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} |
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|
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Daemon daemon_(config); |
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|
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daemon = &daemon_; |
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|
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{ |
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struct ::sigaction action; |
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|
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action.sa_sigaction = reload; |
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action.sa_flags = SA_SIGINFO; |
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|
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api::Posix::CheckError(::sigemptyset(&action.sa_mask)); |
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api::Posix::CheckError(::sigaction(SIGUSR1, &action, NULL)); |
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|
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action.sa_sigaction = stop; |
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|
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api::Posix::CheckError(::sigaction(SIGINT, &action, NULL)); |
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api::Posix::CheckError(::sigaction(SIGTERM, &action, NULL)); |
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} |
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} |
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|
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Spectre2::~Spectre2() |
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{ |
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api::Posix::CheckError(::unlink(pid.NullTerminate())); |
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} |
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|
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ext::String Spectre2::program(api::GetExecutablePath().GetName()), Spectre2::prefix(_Spectre2_prefix_), Spectre2::root(_Spectre2_root_), Spectre2::mount(_Spectre2_mount_); |
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bool Spectre2::debug(false); |
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Daemon* Spectre2::daemon; |
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|
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extern "C" |
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{ |
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void reload(int signal, ::siginfo_t* info, void* uap) |
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{ |
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Spectre2::daemon->reload(); |
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} |
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|
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void stop(int signal, ::siginfo_t* info, void* uap) |
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{ |
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Spectre2::daemon->stop(); |
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} |
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} |
