diff options
Diffstat (limited to 'apt-pkg/deb/dpkgpm.cc')
| -rw-r--r-- | apt-pkg/deb/dpkgpm.cc | 67 |
1 files changed, 57 insertions, 10 deletions
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc index b41b38bd5..4403eaefe 100644 --- a/apt-pkg/deb/dpkgpm.cc +++ b/apt-pkg/deb/dpkgpm.cc @@ -76,6 +76,31 @@ namespace }; } +/* helper function to ionice the given PID + + there is no C header for ionice yet - just the syscall interface + so we use the binary from util-linux +*/ +static bool +ionice(int PID) +{ + if (!FileExists("/usr/bin/ionice")) + return false; + pid_t Process = ExecFork(); + if (Process == 0) + { + char buf[32]; + snprintf(buf, sizeof(buf), "-p%d", PID); + const char *Args[4]; + Args[0] = "/usr/bin/ionice"; + Args[1] = "-c3"; + Args[2] = buf; + Args[3] = 0; + execv(Args[0], (char **)Args); + } + return ExecWait(Process, "ionice"); +} + // DPkgPM::pkgDPkgPM - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -626,20 +651,12 @@ bool pkgDPkgPM::Go(int OutStatusFd) { {"unpacked",N_("Preparing to configure %s") }, {"half-configured", N_("Configuring %s") }, -#if 0 - {"triggers-awaited", N_("Processing triggers for %s") }, - {"triggers-pending", N_("Processing triggers for %s") }, -#endif { "installed", N_("Installed %s")}, {NULL, NULL} }, // Remove operation { {"half-configured", N_("Preparing for removal of %s")}, -#if 0 - {"triggers-awaited", N_("Preparing for removal of %s")}, - {"triggers-pending", N_("Preparing for removal of %s")}, -#endif {"half-installed", N_("Removing %s")}, {"config-files", N_("Removed %s")}, {NULL, NULL} @@ -676,10 +693,19 @@ bool pkgDPkgPM::Go(int OutStatusFd) for (vector<Item>::iterator I = List.begin(); I != List.end();) { vector<Item>::iterator J = I; - for (; J != List.end() && J->Op == I->Op; J++); + for (; J != List.end() && J->Op == I->Op; J++) + /* nothing */; // Generate the argument list const char *Args[MaxArgs + 50]; + + // Now check if we are within the MaxArgs limit + // + // this code below is problematic, because it may happen that + // the argument list is split in a way that A depends on B + // and they are in the same "--configure A B" run + // - with the split they may now be configured in different + // runs if (J - I > (signed)MaxArgs) J = I + MaxArgs; @@ -825,6 +851,15 @@ bool pkgDPkgPM::Go(int OutStatusFd) // Fork dpkg pid_t Child; _config->Set("APT::Keep-Fds::",fd[1]); + // send status information that we are about to fork dpkg + if(OutStatusFd > 0) { + ostringstream status; + status << "pmstatus:dpkg-exec:" + << (PackagesDone/float(PackagesTotal)*100.0) + << ":" << _("Running dpkg") + << endl; + write(OutStatusFd, status.str().c_str(), status.str().size()); + } Child = ExecFork(); // This is the child @@ -842,6 +877,15 @@ bool pkgDPkgPM::Go(int OutStatusFd) } close(fd[0]); // close the read end of the pipe + if (_config->FindDir("DPkg::Chroot-Directory","/") != "/") + { + std::cerr << "Chrooting into " + << _config->FindDir("DPkg::Chroot-Directory") + << std::endl; + if (chroot(_config->FindDir("DPkg::Chroot-Directory","/").c_str()) != 0) + _exit(100); + } + if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0) _exit(100); @@ -861,7 +905,6 @@ bool pkgDPkgPM::Go(int OutStatusFd) _exit(100); } - /* No Job Control Stop Env is a magic dpkg var that prevents it from using sigstop */ putenv((char *)"DPKG_NO_TSTP=yes"); @@ -870,6 +913,10 @@ bool pkgDPkgPM::Go(int OutStatusFd) _exit(100); } + // apply ionice + if (_config->FindB("DPkg::UseIoNice", false) == true) + ionice(Child); + // clear the Keep-Fd again _config->Clear("APT::Keep-Fds",fd[1]); |