+ // if tcgetattr does not return zero there was a error
+ // and we do not do any pty magic
+ _error->PushToStack();
+ if (tcgetattr(STDOUT_FILENO, &d->tt) == 0)
+ {
+ if (ioctl(1, TIOCGWINSZ, (char *)&win) < 0)
+ {
+ _error->Errno("ioctl", _("ioctl(TIOCGWINSZ) failed"));
+ } else if (openpty(&d->master, &d->slave, NULL, &d->tt, &win) < 0)
+ {
+ _error->Errno("openpty", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
+ d->master = d->slave = -1;
+ } else {
+ struct termios rtt;
+ rtt = d->tt;
+ cfmakeraw(&rtt);
+ rtt.c_lflag &= ~ECHO;
+ rtt.c_lflag |= ISIG;
+ // block SIGTTOU during tcsetattr to prevent a hang if
+ // the process is a member of the background process group
+ // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
+ sigemptyset(&d->sigmask);
+ sigaddset(&d->sigmask, SIGTTOU);
+ sigprocmask(SIG_BLOCK,&d->sigmask, &d->original_sigmask);
+ tcsetattr(0, TCSAFLUSH, &rtt);
+ sigprocmask(SIG_SETMASK, &d->original_sigmask, 0);
+ }
+ }
+ // complain only if stdout is either a terminal (but still failed) or is an invalid
+ // descriptor otherwise we would complain about redirection to e.g. /dev/null as well.
+ else if (isatty(STDOUT_FILENO) == 1 || errno == EBADF)
+ _error->Errno("tcgetattr", _("Can not write log (%s)"), _("Is stdout a terminal?"));
+
+ if (_error->PendingError() == true)
+ _error->DumpErrors(std::cerr);
+ _error->RevertToStack();
+}
+
+void pkgDPkgPM::StopPtyMagic()
+{
+ if(d->slave > 0)
+ close(d->slave);
+ if(d->master >= 0)
+ {
+ tcsetattr(0, TCSAFLUSH, &d->tt);
+ close(d->master);
+ }
+}
+
+// DPkgPM::Go - Run the sequence /*{{{*/
+// ---------------------------------------------------------------------
+/* This globs the operations and calls dpkg
+ *
+ * If it is called with a progress object apt will report the install
+ * progress to this object. It maps the dpkg states a package goes
+ * through to human readable (and i10n-able)
+ * names and calculates a percentage for each step.
+ */
+#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
+bool pkgDPkgPM::Go(APT::Progress::PackageManager *progress)
+#else
+bool pkgDPkgPM::GoNoABIBreak(APT::Progress::PackageManager *progress)
+#endif
+{
+ pkgPackageManager::SigINTStop = false;
+ d->progress = progress;
+
+ // Generate the base argument list for dpkg
+ unsigned long StartSize = 0;
+ std::vector<const char *> Args;
+ std::string DpkgExecutable = getDpkgExecutable();
+ Args.push_back(DpkgExecutable.c_str());
+ StartSize += DpkgExecutable.length();
+
+ // Stick in any custom dpkg options
+ Configuration::Item const *Opts = _config->Tree("DPkg::Options");
+ if (Opts != 0)
+ {
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+ Args.push_back(Opts->Value.c_str());
+ StartSize += Opts->Value.length();
+ }
+ }
+
+ size_t const BaseArgs = Args.size();
+ // we need to detect if we can qualify packages with the architecture or not
+ Args.push_back("--assert-multi-arch");
+ Args.push_back(NULL);
+
+ pid_t dpkgAssertMultiArch = ExecFork();
+ if (dpkgAssertMultiArch == 0)
+ {
+ dpkgChrootDirectory();
+ // redirect everything to the ultimate sink as we only need the exit-status
+ int const nullfd = open("/dev/null", O_RDONLY);
+ dup2(nullfd, STDIN_FILENO);
+ dup2(nullfd, STDOUT_FILENO);
+ dup2(nullfd, STDERR_FILENO);
+ execvp(Args[0], (char**) &Args[0]);
+ _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
+ _exit(2);
+ }
+
+ fd_set rfds;
+ struct timespec tv;
+
+ unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
+ unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
+ bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
+
+ if (RunScripts("DPkg::Pre-Invoke") == false)
+ return false;
+
+ if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
+ return false;
+
+ // support subpressing of triggers processing for special
+ // cases like d-i that runs the triggers handling manually
+ bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
+ bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
+ if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
+ List.push_back(Item(Item::ConfigurePending, PkgIterator()));
+
+ // for the progress
+ BuildPackagesProgressMap();
+
+ d->stdin_is_dev_null = false;
projects / apt.git / blobdiff