apt-pkg/deb/dpkgpm.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: dpkgpm.cc,v 1.28 2004/01/27 02:25:01 mdz Exp $
   4 /* ######################################################################
   5
   6    DPKG Package Manager - Provide an interface to dpkg
   7
   8    ##################################################################### */
   9                                                                         /*}}}*/
  10 // Includes                                                             /*{{{*/
  11 #include <config.h>
  12
  13 #include <apt-pkg/cachefile.h>
  14 #include <apt-pkg/configuration.h>
  15 #include <apt-pkg/depcache.h>
  16 #include <apt-pkg/dpkgpm.h>
  17 #include <apt-pkg/error.h>
  18 #include <apt-pkg/fileutl.h>
  19 #include <apt-pkg/install-progress.h>
  20 #include <apt-pkg/packagemanager.h>
  21 #include <apt-pkg/pkgrecords.h>
  22 #include <apt-pkg/strutl.h>
  23 #include <apt-pkg/cacheiterators.h>
  24 #include <apt-pkg/macros.h>
  25 #include <apt-pkg/pkgcache.h>
  26
  27 #include <errno.h>
  28 #include <fcntl.h>
  29 #include <grp.h>
  30 #include <pty.h>
  31 #include <pwd.h>
  32 #include <signal.h>
  33 #include <stddef.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <sys/ioctl.h>
  37 #include <sys/select.h>
  38 #include <sys/stat.h>
  39 #include <sys/time.h>
  40 #include <sys/wait.h>
  41 #include <termios.h>
  42 #include <time.h>
  43 #include <unistd.h>
  44 #include <algorithm>
  45 #include <cstring>
  46 #include <iostream>
  47 #include <map>
  48 #include <set>
  49 #include <string>
  50 #include <utility>
  51 #include <vector>
  52
  53 #include <apti18n.h>
  54                                                                         /*}}}*/
  55
  56 using namespace std;
  57
  58 class pkgDPkgPMPrivate
  59 {
  60 public:
  61    pkgDPkgPMPrivate() : stdin_is_dev_null(false), dpkgbuf_pos(0),
  62                         term_out(NULL), history_out(NULL),
  63                         progress(NULL), master(-1), slave(NULL)
  64    {
  65       dpkgbuf[0] = '\0';
  66    }
  67    ~pkgDPkgPMPrivate()
  68    {
  69    }
  70    bool stdin_is_dev_null;
  71    // the buffer we use for the dpkg status-fd reading
  72    char dpkgbuf[1024];
  73    int dpkgbuf_pos;
  74    FILE *term_out;
  75    FILE *history_out;
  76    string dpkg_error;
  77    APT::Progress::PackageManager *progress;
  78
  79    // pty stuff
  80    struct termios tt;
  81    int master;
  82    char * slave;
  83
  84    // signals
  85    sigset_t sigmask;
  86    sigset_t original_sigmask;
  87
  88 };
  89
  90 namespace
  91 {
  92   // Maps the dpkg "processing" info to human readable names.  Entry 0
  93   // of each array is the key, entry 1 is the value.
  94   const std::pair<const char *, const char *> PackageProcessingOps[] = {
  95     std::make_pair("install",   N_("Installing %s")),
  96     std::make_pair("configure", N_("Configuring %s")),
  97     std::make_pair("remove",    N_("Removing %s")),
  98     std::make_pair("purge",    N_("Completely removing %s")),
  99     std::make_pair("disappear", N_("Noting disappearance of %s")),
 100     std::make_pair("trigproc",  N_("Running post-installation trigger %s"))
 101   };
 102
 103   const std::pair<const char *, const char *> * const PackageProcessingOpsBegin = PackageProcessingOps;
 104   const std::pair<const char *, const char *> * const PackageProcessingOpsEnd   = PackageProcessingOps + sizeof(PackageProcessingOps) / sizeof(PackageProcessingOps[0]);
 105
 106   // Predicate to test whether an entry in the PackageProcessingOps
 107   // array matches a string.
 108   class MatchProcessingOp
 109   {
 110     const char *target;
 111
 112   public:
 113     MatchProcessingOp(const char *the_target)
 114       : target(the_target)
 115     {
 116     }
 117
 118     bool operator()(const std::pair<const char *, const char *> &pair) const
 119     {
 120       return strcmp(pair.first, target) == 0;
 121     }
 122   };
 123 }
 124
 125 /* helper function to ionice the given PID
 126
 127  there is no C header for ionice yet - just the syscall interface
 128  so we use the binary from util-linux
 129 */
 130 static bool
 131 ionice(int PID)
 132 {
 133    if (!FileExists("/usr/bin/ionice"))
 134       return false;
 135    pid_t Process = ExecFork();
 136    if (Process == 0)
 137    {
 138       char buf[32];
 139       snprintf(buf, sizeof(buf), "-p%d", PID);
 140       const char *Args[4];
 141       Args[0] = "/usr/bin/ionice";
 142       Args[1] = "-c3";
 143       Args[2] = buf;
 144       Args[3] = 0;
 145       execv(Args[0], (char **)Args);
 146    }
 147    return ExecWait(Process, "ionice");
 148 }
 149
 150 static std::string getDpkgExecutable()
 151 {
 152    string Tmp = _config->Find("Dir::Bin::dpkg","dpkg");
 153    string const dpkgChrootDir = _config->FindDir("DPkg::Chroot-Directory", "/");
 154    size_t dpkgChrootLen = dpkgChrootDir.length();
 155    if (dpkgChrootDir != "/" && Tmp.find(dpkgChrootDir) == 0)
 156    {
 157       if (dpkgChrootDir[dpkgChrootLen - 1] == '/')
 158          --dpkgChrootLen;
 159       Tmp = Tmp.substr(dpkgChrootLen);
 160    }
 161    return Tmp;
 162 }
 163
 164 // dpkgChrootDirectory - chrooting for dpkg if needed                   /*{{{*/
 165 static void dpkgChrootDirectory()
 166 {
 167    std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
 168    if (chrootDir == "/")
 169       return;
 170    std::cerr << "Chrooting into " << chrootDir << std::endl;
 171    if (chroot(chrootDir.c_str()) != 0)
 172       _exit(100);
 173    if (chdir("/") != 0)
 174       _exit(100);
 175 }
 176                                                                         /*}}}*/
 177
 178
 179 // FindNowVersion - Helper to find a Version in "now" state     /*{{{*/
 180 // ---------------------------------------------------------------------
 181 /* This is helpful when a package is no longer installed but has residual
 182  * config files
 183  */
 184 static
 185 pkgCache::VerIterator FindNowVersion(const pkgCache::PkgIterator &Pkg)
 186 {
 187    pkgCache::VerIterator Ver;
 188    for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver)
 189    {
 190       pkgCache::VerFileIterator Vf = Ver.FileList();
 191       pkgCache::PkgFileIterator F = Vf.File();
 192       for (F = Vf.File(); F.end() == false; ++F)
 193       {
 194          if (F && F.Archive())
 195          {
 196             if (strcmp(F.Archive(), "now"))
 197                return Ver;
 198          }
 199       }
 200    }
 201    return Ver;
 202 }
 203                                                                         /*}}}*/
 204
 205 // DPkgPM::pkgDPkgPM - Constructor                                      /*{{{*/
 206 // ---------------------------------------------------------------------
 207 /* */
 208 pkgDPkgPM::pkgDPkgPM(pkgDepCache *Cache)
 209    : pkgPackageManager(Cache), pkgFailures(0), PackagesDone(0), PackagesTotal(0)
 210 {
 211    d = new pkgDPkgPMPrivate();
 212 }
 213                                                                         /*}}}*/
 214 // DPkgPM::pkgDPkgPM - Destructor                                       /*{{{*/
 215 // ---------------------------------------------------------------------
 216 /* */
 217 pkgDPkgPM::~pkgDPkgPM()
 218 {
 219    delete d;
 220 }
 221                                                                         /*}}}*/
 222 // DPkgPM::Install - Install a package                                  /*{{{*/
 223 // ---------------------------------------------------------------------
 224 /* Add an install operation to the sequence list */
 225 bool pkgDPkgPM::Install(PkgIterator Pkg,string File)
 226 {
 227    if (File.empty() == true || Pkg.end() == true)
 228       return _error->Error("Internal Error, No file name for %s",Pkg.FullName().c_str());
 229
 230    // If the filename string begins with DPkg::Chroot-Directory, return the
 231    // substr that is within the chroot so dpkg can access it.
 232    string const chrootdir = _config->FindDir("DPkg::Chroot-Directory","/");
 233    if (chrootdir != "/" && File.find(chrootdir) == 0)
 234    {
 235       size_t len = chrootdir.length();
 236       if (chrootdir.at(len - 1) == '/')
 237         len--;
 238       List.push_back(Item(Item::Install,Pkg,File.substr(len)));
 239    }
 240    else
 241       List.push_back(Item(Item::Install,Pkg,File));
 242
 243    return true;
 244 }
 245                                                                         /*}}}*/
 246 // DPkgPM::Configure - Configure a package                              /*{{{*/
 247 // ---------------------------------------------------------------------
 248 /* Add a configure operation to the sequence list */
 249 bool pkgDPkgPM::Configure(PkgIterator Pkg)
 250 {
 251    if (Pkg.end() == true)
 252       return false;
 253
 254    List.push_back(Item(Item::Configure, Pkg));
 255
 256    // Use triggers for config calls if we configure "smart"
 257    // as otherwise Pre-Depends will not be satisfied, see #526774
 258    if (_config->FindB("DPkg::TriggersPending", false) == true)
 259       List.push_back(Item(Item::TriggersPending, PkgIterator()));
 260
 261    return true;
 262 }
 263                                                                         /*}}}*/
 264 // DPkgPM::Remove - Remove a package                                    /*{{{*/
 265 // ---------------------------------------------------------------------
 266 /* Add a remove operation to the sequence list */
 267 bool pkgDPkgPM::Remove(PkgIterator Pkg,bool Purge)
 268 {
 269    if (Pkg.end() == true)
 270       return false;
 271
 272    if (Purge == true)
 273       List.push_back(Item(Item::Purge,Pkg));
 274    else
 275       List.push_back(Item(Item::Remove,Pkg));
 276    return true;
 277 }
 278                                                                         /*}}}*/
 279 // DPkgPM::SendPkgInfo - Send info for install-pkgs hook                /*{{{*/
 280 // ---------------------------------------------------------------------
 281 /* This is part of the helper script communication interface, it sends
 282    very complete information down to the other end of the pipe.*/
 283 bool pkgDPkgPM::SendV2Pkgs(FILE *F)
 284 {
 285    return SendPkgsInfo(F, 2);
 286 }
 287 bool pkgDPkgPM::SendPkgsInfo(FILE * const F, unsigned int const &Version)
 288 {
 289    // This version of APT supports only v3, so don't sent higher versions
 290    if (Version <= 3)
 291       fprintf(F,"VERSION %u\n", Version);
 292    else
 293       fprintf(F,"VERSION 3\n");
 294
 295    /* Write out all of the configuration directives by walking the
 296       configuration tree */
 297    const Configuration::Item *Top = _config->Tree(0);
 298    for (; Top != 0;)
 299    {
 300       if (Top->Value.empty() == false)
 301       {
 302          fprintf(F,"%s=%s\n",
 303                  QuoteString(Top->FullTag(),"=\"\n").c_str(),
 304                  QuoteString(Top->Value,"\n").c_str());
 305       }
 306
 307       if (Top->Child != 0)
 308       {
 309          Top = Top->Child;
 310          continue;
 311       }
 312
 313       while (Top != 0 && Top->Next == 0)
 314          Top = Top->Parent;
 315       if (Top != 0)
 316          Top = Top->Next;
 317    }
 318    fprintf(F,"\n");
 319
 320    // Write out the package actions in order.
 321    for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
 322    {
 323       if(I->Pkg.end() == true)
 324          continue;
 325
 326       pkgDepCache::StateCache &S = Cache[I->Pkg];
 327
 328       fprintf(F,"%s ",I->Pkg.Name());
 329
 330       // Current version which we are going to replace
 331       pkgCache::VerIterator CurVer = I->Pkg.CurrentVer();
 332       if (CurVer.end() == true && (I->Op == Item::Remove || I->Op == Item::Purge))
 333          CurVer = FindNowVersion(I->Pkg);
 334
 335       if (CurVer.end() == true)
 336       {
 337          if (Version <= 2)
 338             fprintf(F, "- ");
 339          else
 340             fprintf(F, "- - none ");
 341       }
 342       else
 343       {
 344          fprintf(F, "%s ", CurVer.VerStr());
 345          if (Version >= 3)
 346             fprintf(F, "%s %s ", CurVer.Arch(), CurVer.MultiArchType());
 347       }
 348
 349       // Show the compare operator between current and install version
 350       if (S.InstallVer != 0)
 351       {
 352          pkgCache::VerIterator const InstVer = S.InstVerIter(Cache);
 353          int Comp = 2;
 354          if (CurVer.end() == false)
 355             Comp = InstVer.CompareVer(CurVer);
 356          if (Comp < 0)
 357             fprintf(F,"> ");
 358          else if (Comp == 0)
 359             fprintf(F,"= ");
 360          else if (Comp > 0)
 361             fprintf(F,"< ");
 362          fprintf(F, "%s ", InstVer.VerStr());
 363          if (Version >= 3)
 364             fprintf(F, "%s %s ", InstVer.Arch(), InstVer.MultiArchType());
 365       }
 366       else
 367       {
 368          if (Version <= 2)
 369             fprintf(F, "> - ");
 370          else
 371             fprintf(F, "> - - none ");
 372       }
 373
 374       // Show the filename/operation
 375       if (I->Op == Item::Install)
 376       {
 377          // No errors here..
 378          if (I->File[0] != '/')
 379             fprintf(F,"**ERROR**\n");
 380          else
 381             fprintf(F,"%s\n",I->File.c_str());
 382       }
 383       else if (I->Op == Item::Configure)
 384          fprintf(F,"**CONFIGURE**\n");
 385       else if (I->Op == Item::Remove ||
 386           I->Op == Item::Purge)
 387          fprintf(F,"**REMOVE**\n");
 388
 389       if (ferror(F) != 0)
 390          return false;
 391    }
 392    return true;
 393 }
 394                                                                         /*}}}*/
 395 // DPkgPM::RunScriptsWithPkgs - Run scripts with package names on stdin /*{{{*/
 396 // ---------------------------------------------------------------------
 397 /* This looks for a list of scripts to run from the configuration file
 398    each one is run and is fed on standard input a list of all .deb files
 399    that are due to be installed. */
 400 bool pkgDPkgPM::RunScriptsWithPkgs(const char *Cnf)
 401 {
 402    bool result = true;
 403
 404    Configuration::Item const *Opts = _config->Tree(Cnf);
 405    if (Opts == 0 || Opts->Child == 0)
 406       return true;
 407    Opts = Opts->Child;
 408
 409    sighandler_t old_sigpipe = signal(SIGPIPE, SIG_IGN);
 410
 411    unsigned int Count = 1;
 412    for (; Opts != 0; Opts = Opts->Next, Count++)
 413    {
 414       if (Opts->Value.empty() == true)
 415          continue;
 416
 417       if(_config->FindB("Debug::RunScripts", false) == true)
 418          std::clog << "Running external script with list of all .deb file: '"
 419                    << Opts->Value << "'" << std::endl;
 420
 421       // Determine the protocol version
 422       string OptSec = Opts->Value;
 423       string::size_type Pos;
 424       if ((Pos = OptSec.find(' ')) == string::npos || Pos == 0)
 425          Pos = OptSec.length();
 426       OptSec = "DPkg::Tools::Options::" + string(Opts->Value.c_str(),Pos);
 427
 428       unsigned int Version = _config->FindI(OptSec+"::Version",1);
 429       unsigned int InfoFD = _config->FindI(OptSec + "::InfoFD", STDIN_FILENO);
 430
 431       // Create the pipes
 432       std::set<int> KeepFDs;
 433       MergeKeepFdsFromConfiguration(KeepFDs);
 434       int Pipes[2];
 435       if (pipe(Pipes) != 0) {
 436          result = _error->Errno("pipe","Failed to create IPC pipe to subprocess");
 437          break;
 438       }
 439       if (InfoFD != (unsigned)Pipes[0])
 440          SetCloseExec(Pipes[0],true);
 441       else
 442          KeepFDs.insert(Pipes[0]);
 443
 444
 445       SetCloseExec(Pipes[1],true);
 446
 447       // Purified Fork for running the script
 448       pid_t Process = ExecFork(KeepFDs);
 449       if (Process == 0)
 450       {
 451          // Setup the FDs
 452          dup2(Pipes[0], InfoFD);
 453          SetCloseExec(STDOUT_FILENO,false);
 454          SetCloseExec(STDIN_FILENO,false);
 455          SetCloseExec(STDERR_FILENO,false);
 456
 457          string hookfd;
 458          strprintf(hookfd, "%d", InfoFD);
 459          setenv("APT_HOOK_INFO_FD", hookfd.c_str(), 1);
 460
 461          dpkgChrootDirectory();
 462          const char *Args[4];
 463          Args[0] = "/bin/sh";
 464          Args[1] = "-c";
 465          Args[2] = Opts->Value.c_str();
 466          Args[3] = 0;
 467          execv(Args[0],(char **)Args);
 468          _exit(100);
 469       }
 470       close(Pipes[0]);
 471       FILE *F = fdopen(Pipes[1],"w");
 472       if (F == 0) {
 473          result = _error->Errno("fdopen","Faild to open new FD");
 474          break;
 475       }
 476
 477       // Feed it the filenames.
 478       if (Version <= 1)
 479       {
 480          for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
 481          {
 482             // Only deal with packages to be installed from .deb
 483             if (I->Op != Item::Install)
 484                continue;
 485
 486             // No errors here..
 487             if (I->File[0] != '/')
 488                continue;
 489
 490             /* Feed the filename of each package that is pending install
 491                into the pipe. */
 492             fprintf(F,"%s\n",I->File.c_str());
 493             if (ferror(F) != 0)
 494                break;
 495          }
 496       }
 497       else
 498          SendPkgsInfo(F, Version);
 499
 500       fclose(F);
 501
 502       // Clean up the sub process
 503       if (ExecWait(Process,Opts->Value.c_str()) == false) {
 504          result = _error->Error("Failure running script %s",Opts->Value.c_str());
 505          break;
 506       }
 507    }
 508    signal(SIGPIPE, old_sigpipe);
 509
 510    return result;
 511 }
 512                                                                         /*}}}*/
 513 // DPkgPM::DoStdin - Read stdin and pass to master pty                  /*{{{*/
 514 // ---------------------------------------------------------------------
 515 /*
 516 */
 517 void pkgDPkgPM::DoStdin(int master)
 518 {
 519    unsigned char input_buf[256] = {0,};
 520    ssize_t len = read(STDIN_FILENO, input_buf, sizeof(input_buf));
 521    if (len)
 522       FileFd::Write(master, input_buf, len);
 523    else
 524       d->stdin_is_dev_null = true;
 525 }
 526                                                                         /*}}}*/
 527 // DPkgPM::DoTerminalPty - Read the terminal pty and write log          /*{{{*/
 528 // ---------------------------------------------------------------------
 529 /*
 530  * read the terminal pty and write log
 531  */
 532 void pkgDPkgPM::DoTerminalPty(int master)
 533 {
 534    unsigned char term_buf[1024] = {0,0, };
 535
 536    ssize_t len=read(master, term_buf, sizeof(term_buf));
 537    if(len == -1 && errno == EIO)
 538    {
 539       // this happens when the child is about to exit, we
 540       // give it time to actually exit, otherwise we run
 541       // into a race so we sleep for half a second.
 542       struct timespec sleepfor = { 0, 500000000 };
 543       nanosleep(&sleepfor, NULL);
 544       return;
 545    }
 546    if(len <= 0)
 547       return;
 548    FileFd::Write(1, term_buf, len);
 549    if(d->term_out)
 550       fwrite(term_buf, len, sizeof(char), d->term_out);
 551 }
 552                                                                         /*}}}*/
 553 // DPkgPM::ProcessDpkgStatusBuf                                         /*{{{*/
 554 // ---------------------------------------------------------------------
 555 /*
 556  */
 557 void pkgDPkgPM::ProcessDpkgStatusLine(char *line)
 558 {
 559    bool const Debug = _config->FindB("Debug::pkgDPkgProgressReporting",false);
 560    if (Debug == true)
 561       std::clog << "got from dpkg '" << line << "'" << std::endl;
 562
 563    /* dpkg sends strings like this:
 564       'status:   <pkg>: <pkg  qstate>'
 565       'status:   <pkg>:<arch>: <pkg  qstate>'
 566
 567       'processing: {install,upgrade,configure,remove,purge,disappear,trigproc}: pkg'
 568       'processing: {install,upgrade,configure,remove,purge,disappear,trigproc}: trigger'
 569    */
 570
 571    // we need to split on ": " (note the appended space) as the ':' is
 572    // part of the pkgname:arch information that dpkg sends
 573    //
 574    // A dpkg error message may contain additional ":" (like
 575    //  "failed in buffer_write(fd) (10, ret=-1): backend dpkg-deb ..."
 576    // so we need to ensure to not split too much
 577    std::vector<std::string> list = StringSplit(line, ": ", 4);
 578    if(list.size() < 3)
 579    {
 580       if (Debug == true)
 581          std::clog << "ignoring line: not enough ':'" << std::endl;
 582       return;
 583    }
 584
 585    // build the (prefix, pkgname, action) tuple, position of this
 586    // is different for "processing" or "status" messages
 587    std::string prefix = APT::String::Strip(list[0]);
 588    std::string pkgname;
 589    std::string action;
 590
 591    // "processing" has the form "processing: action: pkg or trigger"
 592    // with action = ["install", "upgrade", "configure", "remove", "purge",
 593    //                "disappear", "trigproc"]
 594    if (prefix == "processing")
 595    {
 596       pkgname = APT::String::Strip(list[2]);
 597       action = APT::String::Strip(list[1]);
 598       // we don't care for the difference (as dpkg doesn't really either)
 599       if (action == "upgrade")
 600          action = "install";
 601    }
 602    // "status" has the form: "status: pkg: state"
 603    // with state in ["half-installed", "unpacked", "half-configured",
 604    //                "installed", "config-files", "not-installed"]
 605    else if (prefix == "status")
 606    {
 607       pkgname = APT::String::Strip(list[1]);
 608       action = APT::String::Strip(list[2]);
 609    } else {
 610       if (Debug == true)
 611          std::clog << "unknown prefix '" << prefix << "'" << std::endl;
 612       return;
 613    }
 614
 615
 616    /* handle the special cases first:
 617
 618       errors look like this:
 619       'status: /var/cache/apt/archives/krecipes_0.8.1-0ubuntu1_i386.deb : error : trying to overwrite `/usr/share/doc/kde/HTML/en/krecipes/krectip.png', which is also in package krecipes-data
 620       and conffile-prompt like this
 621       'status:/etc/compiz.conf/compiz.conf :  conffile-prompt: 'current-conffile' 'new-conffile' useredited distedited
 622    */
 623    if (prefix == "status")
 624    {
 625       if(action == "error")
 626       {
 627          d->progress->Error(pkgname, PackagesDone, PackagesTotal,
 628                             list[3]);
 629          pkgFailures++;
 630          WriteApportReport(pkgname.c_str(), list[3].c_str());
 631          return;
 632       }
 633       else if(action == "conffile-prompt")
 634       {
 635          d->progress->ConffilePrompt(pkgname, PackagesDone, PackagesTotal,
 636                                      list[3]);
 637          return;
 638       }
 639    }
 640
 641    // at this point we know that we should have a valid pkgname, so build all
 642    // the info from it
 643
 644    // dpkg does not always send "pkgname:arch" so we add it here if needed
 645    if (pkgname.find(":") == std::string::npos)
 646    {
 647       // find the package in the group that is touched by dpkg
 648       // if there are multiple pkgs dpkg would send us a full pkgname:arch
 649       pkgCache::GrpIterator Grp = Cache.FindGrp(pkgname);
 650       if (Grp.end() == false)
 651       {
 652          pkgCache::PkgIterator P = Grp.PackageList();
 653          for (; P.end() != true; P = Grp.NextPkg(P))
 654          {
 655             if(Cache[P].Keep() == false || Cache[P].ReInstall() == true)
 656             {
 657                pkgname = P.FullName();
 658                break;
 659             }
 660          }
 661       }
 662    }
 663
 664    const char* const pkg = pkgname.c_str();
 665    std::string short_pkgname = StringSplit(pkgname, ":")[0];
 666    std::string arch = "";
 667    if (pkgname.find(":") != string::npos)
 668       arch = StringSplit(pkgname, ":")[1];
 669    std::string i18n_pkgname = pkgname;
 670    if (arch.size() != 0)
 671       strprintf(i18n_pkgname, "%s (%s)", short_pkgname.c_str(), arch.c_str());
 672
 673    // 'processing' from dpkg looks like
 674    // 'processing: action: pkg'
 675    if(prefix == "processing")
 676    {
 677       const std::pair<const char *, const char *> * const iter =
 678         std::find_if(PackageProcessingOpsBegin,
 679                      PackageProcessingOpsEnd,
 680                      MatchProcessingOp(action.c_str()));
 681       if(iter == PackageProcessingOpsEnd)
 682       {
 683          if (Debug == true)
 684             std::clog << "ignoring unknown action: " << action << std::endl;
 685          return;
 686       }
 687       std::string msg;
 688       strprintf(msg, _(iter->second), i18n_pkgname.c_str());
 689       d->progress->StatusChanged(pkgname, PackagesDone, PackagesTotal, msg);
 690
 691       // FIXME: this needs a muliarch testcase
 692       // FIXME2: is "pkgname" here reliable with dpkg only sending us
 693       //         short pkgnames?
 694       if (action == "disappear")
 695          handleDisappearAction(pkgname);
 696       return;
 697    }
 698
 699    if (prefix == "status")
 700    {
 701       vector<struct DpkgState> const &states = PackageOps[pkg];
 702       if(PackageOpsDone[pkg] < states.size())
 703       {
 704          char const * const next_action = states[PackageOpsDone[pkg]].state;
 705          if (next_action && Debug == true)
 706             std::clog << "(parsed from dpkg) pkg: " << short_pkgname
 707                << " action: " << action << " (expected: '" << next_action << "' "
 708                << PackageOpsDone[pkg] << " of " << states.size() << ")" << endl;
 709
 710          // check if the package moved to the next dpkg state
 711          if(next_action && (action == next_action))
 712          {
 713             // only read the translation if there is actually a next action
 714             char const * const translation = _(states[PackageOpsDone[pkg]].str);
 715
 716             // we moved from one dpkg state to a new one, report that
 717             ++PackageOpsDone[pkg];
 718             ++PackagesDone;
 719
 720             std::string msg;
 721             strprintf(msg, translation, i18n_pkgname.c_str());
 722             d->progress->StatusChanged(pkgname, PackagesDone, PackagesTotal, msg);
 723          }
 724       }
 725    }
 726 }
 727                                                                         /*}}}*/
 728 // DPkgPM::handleDisappearAction                                        /*{{{*/
 729 void pkgDPkgPM::handleDisappearAction(string const &pkgname)
 730 {
 731    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
 732    if (unlikely(Pkg.end() == true))
 733       return;
 734
 735    // record the package name for display and stuff later
 736    disappearedPkgs.insert(Pkg.FullName(true));
 737
 738    // the disappeared package was auto-installed - nothing to do
 739    if ((Cache[Pkg].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
 740       return;
 741    pkgCache::VerIterator PkgVer = Cache[Pkg].InstVerIter(Cache);
 742    if (unlikely(PkgVer.end() == true))
 743       return;
 744    /* search in the list of dependencies for (Pre)Depends,
 745       check if this dependency has a Replaces on our package
 746       and if so transfer the manual installed flag to it */
 747    for (pkgCache::DepIterator Dep = PkgVer.DependsList(); Dep.end() != true; ++Dep)
 748    {
 749       if (Dep->Type != pkgCache::Dep::Depends &&
 750           Dep->Type != pkgCache::Dep::PreDepends)
 751          continue;
 752       pkgCache::PkgIterator Tar = Dep.TargetPkg();
 753       if (unlikely(Tar.end() == true))
 754          continue;
 755       // the package is already marked as manual
 756       if ((Cache[Tar].Flags & pkgCache::Flag::Auto) != pkgCache::Flag::Auto)
 757          continue;
 758       pkgCache::VerIterator TarVer =  Cache[Tar].InstVerIter(Cache);
 759       if (TarVer.end() == true)
 760          continue;
 761       for (pkgCache::DepIterator Rep = TarVer.DependsList(); Rep.end() != true; ++Rep)
 762       {
 763          if (Rep->Type != pkgCache::Dep::Replaces)
 764             continue;
 765          if (Pkg != Rep.TargetPkg())
 766             continue;
 767          // okay, they are strongly connected - transfer manual-bit
 768          if (Debug == true)
 769             std::clog << "transfer manual-bit from disappeared »" << pkgname << "« to »" << Tar.FullName() << "«" << std::endl;
 770          Cache[Tar].Flags &= ~Flag::Auto;
 771          break;
 772       }
 773    }
 774 }
 775                                                                         /*}}}*/
 776 // DPkgPM::DoDpkgStatusFd                                               /*{{{*/
 777 // ---------------------------------------------------------------------
 778 /*
 779  */
 780 void pkgDPkgPM::DoDpkgStatusFd(int statusfd)
 781 {
 782    char *p, *q;
 783    int len;
 784
 785    len=read(statusfd, &d->dpkgbuf[d->dpkgbuf_pos], sizeof(d->dpkgbuf)-d->dpkgbuf_pos);
 786    d->dpkgbuf_pos += len;
 787    if(len <= 0)
 788       return;
 789
 790    // process line by line if we have a buffer
 791    p = q = d->dpkgbuf;
 792    while((q=(char*)memchr(p, '\n', d->dpkgbuf+d->dpkgbuf_pos-p)) != NULL)
 793    {
 794       *q = 0;
 795       ProcessDpkgStatusLine(p);
 796       p=q+1; // continue with next line
 797    }
 798
 799    // now move the unprocessed bits (after the final \n that is now a 0x0)
 800    // to the start and update d->dpkgbuf_pos
 801    p = (char*)memrchr(d->dpkgbuf, 0, d->dpkgbuf_pos);
 802    if(p == NULL)
 803       return;
 804
 805    // we are interessted in the first char *after* 0x0
 806    p++;
 807
 808    // move the unprocessed tail to the start and update pos
 809    memmove(d->dpkgbuf, p, p-d->dpkgbuf);
 810    d->dpkgbuf_pos = d->dpkgbuf+d->dpkgbuf_pos-p;
 811 }
 812                                                                         /*}}}*/
 813 // DPkgPM::WriteHistoryTag                                              /*{{{*/
 814 void pkgDPkgPM::WriteHistoryTag(string const &tag, string value)
 815 {
 816    size_t const length = value.length();
 817    if (length == 0)
 818       return;
 819    // poor mans rstrip(", ")
 820    if (value[length-2] == ',' && value[length-1] == ' ')
 821       value.erase(length - 2, 2);
 822    fprintf(d->history_out, "%s: %s\n", tag.c_str(), value.c_str());
 823 }                                                                       /*}}}*/
 824 // DPkgPM::OpenLog                                                      /*{{{*/
 825 bool pkgDPkgPM::OpenLog()
 826 {
 827    string const logdir = _config->FindDir("Dir::Log");
 828    if(CreateAPTDirectoryIfNeeded(logdir, logdir) == false)
 829       // FIXME: use a better string after freeze
 830       return _error->Error(_("Directory '%s' missing"), logdir.c_str());
 831
 832    // get current time
 833    char timestr[200];
 834    time_t const t = time(NULL);
 835    struct tm const * const tmp = localtime(&t);
 836    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 837
 838    // open terminal log
 839    string const logfile_name = flCombine(logdir,
 840                                    _config->Find("Dir::Log::Terminal"));
 841    if (!logfile_name.empty())
 842    {
 843       d->term_out = fopen(logfile_name.c_str(),"a");
 844       if (d->term_out == NULL)
 845          return _error->WarningE("OpenLog", _("Could not open file '%s'"), logfile_name.c_str());
 846       setvbuf(d->term_out, NULL, _IONBF, 0);
 847       SetCloseExec(fileno(d->term_out), true);
 848       if (getuid() == 0) // if we aren't root, we can't chown a file, so don't try it
 849       {
 850          struct passwd *pw = getpwnam("root");
 851          struct group *gr = getgrnam("adm");
 852          if (pw != NULL && gr != NULL && chown(logfile_name.c_str(), pw->pw_uid, gr->gr_gid) != 0)
 853             _error->WarningE("OpenLog", "chown to root:adm of file %s failed", logfile_name.c_str());
 854       }
 855       if (chmod(logfile_name.c_str(), 0640) != 0)
 856          _error->WarningE("OpenLog", "chmod 0640 of file %s failed", logfile_name.c_str());
 857       fprintf(d->term_out, "\nLog started: %s\n", timestr);
 858    }
 859
 860    // write your history
 861    string const history_name = flCombine(logdir,
 862                                    _config->Find("Dir::Log::History"));
 863    if (!history_name.empty())
 864    {
 865       d->history_out = fopen(history_name.c_str(),"a");
 866       if (d->history_out == NULL)
 867          return _error->WarningE("OpenLog", _("Could not open file '%s'"), history_name.c_str());
 868       SetCloseExec(fileno(d->history_out), true);
 869       chmod(history_name.c_str(), 0644);
 870       fprintf(d->history_out, "\nStart-Date: %s\n", timestr);
 871       string remove, purge, install, reinstall, upgrade, downgrade;
 872       for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
 873       {
 874          enum { CANDIDATE, CANDIDATE_AUTO, CURRENT_CANDIDATE, CURRENT } infostring;
 875          string *line = NULL;
 876          #define HISTORYINFO(X, Y) { line = &X; infostring = Y; }
 877          if (Cache[I].NewInstall() == true)
 878             HISTORYINFO(install, CANDIDATE_AUTO)
 879          else if (Cache[I].ReInstall() == true)
 880             HISTORYINFO(reinstall, CANDIDATE)
 881          else if (Cache[I].Upgrade() == true)
 882             HISTORYINFO(upgrade, CURRENT_CANDIDATE)
 883          else if (Cache[I].Downgrade() == true)
 884             HISTORYINFO(downgrade, CURRENT_CANDIDATE)
 885          else if (Cache[I].Delete() == true)
 886             HISTORYINFO((Cache[I].Purge() ? purge : remove), CURRENT)
 887          else
 888             continue;
 889          #undef HISTORYINFO
 890          line->append(I.FullName(false)).append(" (");
 891          switch (infostring) {
 892          case CANDIDATE: line->append(Cache[I].CandVersion); break;
 893          case CANDIDATE_AUTO:
 894             line->append(Cache[I].CandVersion);
 895             if ((Cache[I].Flags & pkgCache::Flag::Auto) == pkgCache::Flag::Auto)
 896                line->append(", automatic");
 897             break;
 898          case CURRENT_CANDIDATE: line->append(Cache[I].CurVersion).append(", ").append(Cache[I].CandVersion); break;
 899          case CURRENT: line->append(Cache[I].CurVersion); break;
 900          }
 901          line->append("), ");
 902       }
 903       if (_config->Exists("Commandline::AsString") == true)
 904          WriteHistoryTag("Commandline", _config->Find("Commandline::AsString"));
 905       WriteHistoryTag("Install", install);
 906       WriteHistoryTag("Reinstall", reinstall);
 907       WriteHistoryTag("Upgrade", upgrade);
 908       WriteHistoryTag("Downgrade",downgrade);
 909       WriteHistoryTag("Remove",remove);
 910       WriteHistoryTag("Purge",purge);
 911       fflush(d->history_out);
 912    }
 913
 914    return true;
 915 }
 916                                                                         /*}}}*/
 917 // DPkg::CloseLog                                                       /*{{{*/
 918 bool pkgDPkgPM::CloseLog()
 919 {
 920    char timestr[200];
 921    time_t t = time(NULL);
 922    struct tm *tmp = localtime(&t);
 923    strftime(timestr, sizeof(timestr), "%F  %T", tmp);
 924
 925    if(d->term_out)
 926    {
 927       fprintf(d->term_out, "Log ended: ");
 928       fprintf(d->term_out, "%s", timestr);
 929       fprintf(d->term_out, "\n");
 930       fclose(d->term_out);
 931    }
 932    d->term_out = NULL;
 933
 934    if(d->history_out)
 935    {
 936       if (disappearedPkgs.empty() == false)
 937       {
 938          string disappear;
 939          for (std::set<std::string>::const_iterator d = disappearedPkgs.begin();
 940               d != disappearedPkgs.end(); ++d)
 941          {
 942             pkgCache::PkgIterator P = Cache.FindPkg(*d);
 943             disappear.append(*d);
 944             if (P.end() == true)
 945                disappear.append(", ");
 946             else
 947                disappear.append(" (").append(Cache[P].CurVersion).append("), ");
 948          }
 949          WriteHistoryTag("Disappeared", disappear);
 950       }
 951       if (d->dpkg_error.empty() == false)
 952          fprintf(d->history_out, "Error: %s\n", d->dpkg_error.c_str());
 953       fprintf(d->history_out, "End-Date: %s\n", timestr);
 954       fclose(d->history_out);
 955    }
 956    d->history_out = NULL;
 957
 958    return true;
 959 }
 960                                                                         /*}}}*/
 961                                                                         /*}}}*/
 962 /*{{{*/
 963 // This implements a racy version of pselect for those architectures
 964 // that don't have a working implementation.
 965 // FIXME: Probably can be removed on Lenny+1
 966 static int racy_pselect(int nfds, fd_set *readfds, fd_set *writefds,
 967    fd_set *exceptfds, const struct timespec *timeout,
 968    const sigset_t *sigmask)
 969 {
 970    sigset_t origmask;
 971    struct timeval tv;
 972    int retval;
 973
 974    tv.tv_sec = timeout->tv_sec;
 975    tv.tv_usec = timeout->tv_nsec/1000;
 976
 977    sigprocmask(SIG_SETMASK, sigmask, &origmask);
 978    retval = select(nfds, readfds, writefds, exceptfds, &tv);
 979    sigprocmask(SIG_SETMASK, &origmask, 0);
 980    return retval;
 981 }
 982                                                                         /*}}}*/
 983
 984 // DPkgPM::BuildPackagesProgressMap                                     /*{{{*/
 985 void pkgDPkgPM::BuildPackagesProgressMap()
 986 {
 987    // map the dpkg states to the operations that are performed
 988    // (this is sorted in the same way as Item::Ops)
 989    static const struct DpkgState DpkgStatesOpMap[][7] = {
 990       // Install operation
 991       {
 992          {"half-installed", N_("Preparing %s")},
 993          {"unpacked", N_("Unpacking %s") },
 994          {NULL, NULL}
 995       },
 996       // Configure operation
 997       {
 998          {"unpacked",N_("Preparing to configure %s") },
 999          {"half-configured", N_("Configuring %s") },
1000          { "installed", N_("Installed %s")},
1001          {NULL, NULL}
1002       },
1003       // Remove operation
1004       {
1005          {"half-configured", N_("Preparing for removal of %s")},
1006          {"half-installed", N_("Removing %s")},
1007          {"config-files",  N_("Removed %s")},
1008          {NULL, NULL}
1009       },
1010       // Purge operation
1011       {
1012          {"config-files", N_("Preparing to completely remove %s")},
1013          {"not-installed", N_("Completely removed %s")},
1014          {NULL, NULL}
1015       },
1016    };
1017
1018    // init the PackageOps map, go over the list of packages that
1019    // that will be [installed|configured|removed|purged] and add
1020    // them to the PackageOps map (the dpkg states it goes through)
1021    // and the PackageOpsTranslations (human readable strings)
1022    for (vector<Item>::const_iterator I = List.begin(); I != List.end(); ++I)
1023    {
1024       if((*I).Pkg.end() == true)
1025          continue;
1026
1027       string const name = (*I).Pkg.FullName();
1028       PackageOpsDone[name] = 0;
1029       for(int i=0; (DpkgStatesOpMap[(*I).Op][i]).state != NULL; ++i)
1030       {
1031          PackageOps[name].push_back(DpkgStatesOpMap[(*I).Op][i]);
1032          PackagesTotal++;
1033       }
1034    }
1035 }
1036                                                                         /*}}}*/
1037 bool pkgDPkgPM::Go(int StatusFd)
1038 {
1039    APT::Progress::PackageManager *progress = NULL;
1040    if (StatusFd == -1)
1041       progress = APT::Progress::PackageManagerProgressFactory();
1042    else
1043       progress = new APT::Progress::PackageManagerProgressFd(StatusFd);
1044
1045    return Go(progress);
1046 }
1047
1048 void pkgDPkgPM::StartPtyMagic()
1049 {
1050    if (_config->FindB("Dpkg::Use-Pty", true) == false)
1051    {
1052       d->master = -1;
1053       if (d->slave != NULL)
1054          free(d->slave);
1055       d->slave = NULL;
1056       return;
1057    }
1058
1059    _error->PushToStack();
1060    // if tcgetattr for both stdin/stdout returns 0 (no error)
1061    // we do the pty magic
1062    if (tcgetattr(STDOUT_FILENO, &d->tt) == 0 &&
1063          tcgetattr(STDIN_FILENO, &d->tt) == 0)
1064    {
1065       d->master = posix_openpt(O_RDWR | O_NOCTTY);
1066       if (d->master == -1)
1067          _error->Errno("posix_openpt", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
1068       else if (unlockpt(d->master) == -1)
1069       {
1070          _error->Errno("unlockpt", "Unlocking the slave of master fd %d failed!", d->master);
1071          close(d->master);
1072          d->master = -1;
1073       }
1074       else
1075       {
1076          char const * const slave_name = ptsname(d->master);
1077          if (slave_name == NULL)
1078          {
1079             _error->Errno("unlockpt", "Getting name for slave of master fd %d failed!", d->master);
1080             close(d->master);
1081             d->master = -1;
1082          }
1083          else
1084          {
1085             d->slave = strdup(slave_name);
1086             if (d->slave == NULL)
1087             {
1088                _error->Errno("strdup", "Copying name %s for slave of master fd %d failed!", slave_name, d->master);
1089                close(d->master);
1090                d->master = -1;
1091             }
1092             struct winsize win;
1093             if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &win) < 0)
1094                _error->Errno("ioctl", "Getting TIOCGWINSZ from stdout failed!");
1095             if (ioctl(d->master, TIOCSWINSZ, &win) < 0)
1096                _error->Errno("ioctl", "Setting TIOCSWINSZ for master fd %d failed!", d->master);
1097             if (tcsetattr(d->master, TCSANOW, &d->tt) == -1)
1098                _error->Errno("tcsetattr", "Setting in Start via TCSANOW for master fd %d failed!", d->master);
1099
1100             struct termios raw_tt;
1101             raw_tt = d->tt;
1102             cfmakeraw(&raw_tt);
1103             raw_tt.c_lflag &= ~ECHO;
1104             raw_tt.c_lflag |= ISIG;
1105             // block SIGTTOU during tcsetattr to prevent a hang if
1106             // the process is a member of the background process group
1107             // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html
1108             sigemptyset(&d->sigmask);
1109             sigaddset(&d->sigmask, SIGTTOU);
1110             sigprocmask(SIG_BLOCK,&d->sigmask, &d->original_sigmask);
1111             if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw_tt) == -1)
1112                _error->Errno("tcsetattr", "Setting in Start via TCSAFLUSH for stdout failed!");
1113             sigprocmask(SIG_SETMASK, &d->original_sigmask, NULL);
1114          }
1115       }
1116    }
1117    else
1118    {
1119       // complain only if stdout is either a terminal (but still failed) or is an invalid
1120       // descriptor otherwise we would complain about redirection to e.g. /dev/null as well.
1121       if (isatty(STDOUT_FILENO) == 1 || errno == EBADF)
1122          _error->Errno("tcgetattr", _("Can not write log (%s)"), _("Is stdout a terminal?"));
1123    }
1124
1125    if (_error->PendingError() == true)
1126    {
1127       if (d->master != -1)
1128       {
1129          close(d->master);
1130          d->master = -1;
1131       }
1132       _error->DumpErrors(std::cerr);
1133    }
1134    _error->RevertToStack();
1135 }
1136 void pkgDPkgPM::SetupSlavePtyMagic()
1137 {
1138    if(d->master == -1)
1139       return;
1140
1141    if (close(d->master) == -1)
1142       _error->FatalE("close", "Closing master %d in child failed!", d->master);
1143    if (setsid() == -1)
1144       _error->FatalE("setsid", "Starting a new session for child failed!");
1145
1146    int const slaveFd = open(d->slave, O_RDWR);
1147    if (slaveFd == -1)
1148       _error->FatalE("open", _("Can not write log (%s)"), _("Is /dev/pts mounted?"));
1149
1150    if (ioctl(slaveFd, TIOCSCTTY, 0) < 0)
1151       _error->FatalE("ioctl", "Setting TIOCSCTTY for slave fd %d failed!", slaveFd);
1152    else
1153    {
1154       for (unsigned short i = 0; i < 3; ++i)
1155          if (dup2(slaveFd, i) == -1)
1156             _error->FatalE("dup2", "Dupping %d to %d in child failed!", slaveFd, i);
1157
1158       if (tcsetattr(0, TCSANOW, &d->tt) < 0)
1159          _error->FatalE("tcsetattr", "Setting in Setup via TCSANOW for slave fd %d failed!", slaveFd);
1160    }
1161 }
1162 void pkgDPkgPM::StopPtyMagic()
1163 {
1164    if (d->slave != NULL)
1165       free(d->slave);
1166    d->slave = NULL;
1167    if(d->master >= 0)
1168    {
1169       if (tcsetattr(0, TCSAFLUSH, &d->tt) == -1)
1170          _error->FatalE("tcsetattr", "Setting in Stop via TCSAFLUSH for stdin failed!");
1171       close(d->master);
1172       d->master = -1;
1173    }
1174 }
1175
1176 // DPkgPM::Go - Run the sequence                                        /*{{{*/
1177 // ---------------------------------------------------------------------
1178 /* This globs the operations and calls dpkg
1179  *
1180  * If it is called with a progress object apt will report the install
1181  * progress to this object. It maps the dpkg states a package goes
1182  * through to human readable (and i10n-able)
1183  * names and calculates a percentage for each step.
1184  */
1185 bool pkgDPkgPM::Go(APT::Progress::PackageManager *progress)
1186 {
1187    pkgPackageManager::SigINTStop = false;
1188    d->progress = progress;
1189
1190    // Generate the base argument list for dpkg
1191    unsigned long StartSize = 0;
1192    std::vector<const char *> Args;
1193    std::string DpkgExecutable = getDpkgExecutable();
1194    Args.push_back(DpkgExecutable.c_str());
1195    StartSize += DpkgExecutable.length();
1196
1197    // Stick in any custom dpkg options
1198    Configuration::Item const *Opts = _config->Tree("DPkg::Options");
1199    if (Opts != 0)
1200    {
1201       Opts = Opts->Child;
1202       for (; Opts != 0; Opts = Opts->Next)
1203       {
1204          if (Opts->Value.empty() == true)
1205             continue;
1206          Args.push_back(Opts->Value.c_str());
1207          StartSize += Opts->Value.length();
1208       }
1209    }
1210
1211    size_t const BaseArgs = Args.size();
1212    // we need to detect if we can qualify packages with the architecture or not
1213    Args.push_back("--assert-multi-arch");
1214    Args.push_back(NULL);
1215
1216    pid_t dpkgAssertMultiArch = ExecFork();
1217    if (dpkgAssertMultiArch == 0)
1218    {
1219       dpkgChrootDirectory();
1220       // redirect everything to the ultimate sink as we only need the exit-status
1221       int const nullfd = open("/dev/null", O_RDONLY);
1222       dup2(nullfd, STDIN_FILENO);
1223       dup2(nullfd, STDOUT_FILENO);
1224       dup2(nullfd, STDERR_FILENO);
1225       execvp(Args[0], (char**) &Args[0]);
1226       _error->WarningE("dpkgGo", "Can't detect if dpkg supports multi-arch!");
1227       _exit(2);
1228    }
1229
1230    fd_set rfds;
1231    struct timespec tv;
1232
1233    unsigned int const MaxArgs = _config->FindI("Dpkg::MaxArgs",8*1024);
1234    unsigned int const MaxArgBytes = _config->FindI("Dpkg::MaxArgBytes",32*1024);
1235    bool const NoTriggers = _config->FindB("DPkg::NoTriggers", false);
1236
1237    if (RunScripts("DPkg::Pre-Invoke") == false)
1238       return false;
1239
1240    if (RunScriptsWithPkgs("DPkg::Pre-Install-Pkgs") == false)
1241       return false;
1242
1243    // support subpressing of triggers processing for special
1244    // cases like d-i that runs the triggers handling manually
1245    bool const SmartConf = (_config->Find("PackageManager::Configure", "all") != "all");
1246    bool const TriggersPending = _config->FindB("DPkg::TriggersPending", false);
1247    if (_config->FindB("DPkg::ConfigurePending", SmartConf) == true)
1248       List.push_back(Item(Item::ConfigurePending, PkgIterator()));
1249
1250    // for the progress
1251    BuildPackagesProgressMap();
1252
1253    d->stdin_is_dev_null = false;
1254
1255    // create log
1256    OpenLog();
1257
1258    bool dpkgMultiArch = false;
1259    if (dpkgAssertMultiArch > 0)
1260    {
1261       int Status = 0;
1262       while (waitpid(dpkgAssertMultiArch, &Status, 0) != dpkgAssertMultiArch)
1263       {
1264          if (errno == EINTR)
1265             continue;
1266          _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --assert-multi-arch");
1267          break;
1268       }
1269       if (WIFEXITED(Status) == true && WEXITSTATUS(Status) == 0)
1270          dpkgMultiArch = true;
1271    }
1272
1273    // start pty magic before the loop
1274    StartPtyMagic();
1275
1276    // Tell the progress that its starting and fork dpkg
1277    d->progress->Start(d->master);
1278
1279    // this loop is runs once per dpkg operation
1280    vector<Item>::const_iterator I = List.begin();
1281    while (I != List.end())
1282    {
1283       // Do all actions with the same Op in one run
1284       vector<Item>::const_iterator J = I;
1285       if (TriggersPending == true)
1286          for (; J != List.end(); ++J)
1287          {
1288             if (J->Op == I->Op)
1289                continue;
1290             if (J->Op != Item::TriggersPending)
1291                break;
1292             vector<Item>::const_iterator T = J + 1;
1293             if (T != List.end() && T->Op == I->Op)
1294                continue;
1295             break;
1296          }
1297       else
1298          for (; J != List.end() && J->Op == I->Op; ++J)
1299             /* nothing */;
1300
1301       // keep track of allocated strings for multiarch package names
1302       std::vector<char *> Packages;
1303
1304       // start with the baseset of arguments
1305       unsigned long Size = StartSize;
1306       Args.erase(Args.begin() + BaseArgs, Args.end());
1307
1308       // Now check if we are within the MaxArgs limit
1309       //
1310       // this code below is problematic, because it may happen that
1311       // the argument list is split in a way that A depends on B
1312       // and they are in the same "--configure A B" run
1313       // - with the split they may now be configured in different
1314       //   runs, using Immediate-Configure-All can help prevent this.
1315       if (J - I > (signed)MaxArgs)
1316       {
1317          J = I + MaxArgs;
1318          unsigned long const size = MaxArgs + 10;
1319          Args.reserve(size);
1320          Packages.reserve(size);
1321       }
1322       else
1323       {
1324          unsigned long const size = (J - I) + 10;
1325          Args.reserve(size);
1326          Packages.reserve(size);
1327       }
1328
1329       int fd[2];
1330       if (pipe(fd) != 0)
1331          return _error->Errno("pipe","Failed to create IPC pipe to dpkg");
1332
1333 #define ADDARG(X) Args.push_back(X); Size += strlen(X)
1334 #define ADDARGC(X) Args.push_back(X); Size += sizeof(X) - 1
1335
1336       ADDARGC("--status-fd");
1337       char status_fd_buf[20];
1338       snprintf(status_fd_buf,sizeof(status_fd_buf),"%i", fd[1]);
1339       ADDARG(status_fd_buf);
1340       unsigned long const Op = I->Op;
1341
1342       switch (I->Op)
1343       {
1344          case Item::Remove:
1345          ADDARGC("--force-depends");
1346          ADDARGC("--force-remove-essential");
1347          ADDARGC("--remove");
1348          break;
1349
1350          case Item::Purge:
1351          ADDARGC("--force-depends");
1352          ADDARGC("--force-remove-essential");
1353          ADDARGC("--purge");
1354          break;
1355
1356          case Item::Configure:
1357          ADDARGC("--configure");
1358          break;
1359
1360          case Item::ConfigurePending:
1361          ADDARGC("--configure");
1362          ADDARGC("--pending");
1363          break;
1364
1365          case Item::TriggersPending:
1366          ADDARGC("--triggers-only");
1367          ADDARGC("--pending");
1368          break;
1369
1370          case Item::Install:
1371          ADDARGC("--unpack");
1372          ADDARGC("--auto-deconfigure");
1373          break;
1374       }
1375
1376       if (NoTriggers == true && I->Op != Item::TriggersPending &&
1377           I->Op != Item::ConfigurePending)
1378       {
1379          ADDARGC("--no-triggers");
1380       }
1381 #undef ADDARGC
1382
1383       // Write in the file or package names
1384       if (I->Op == Item::Install)
1385       {
1386          for (;I != J && Size < MaxArgBytes; ++I)
1387          {
1388             if (I->File[0] != '/')
1389                return _error->Error("Internal Error, Pathname to install is not absolute '%s'",I->File.c_str());
1390             Args.push_back(I->File.c_str());
1391             Size += I->File.length();
1392          }
1393       }
1394       else
1395       {
1396          string const nativeArch = _config->Find("APT::Architecture");
1397          unsigned long const oldSize = I->Op == Item::Configure ? Size : 0;
1398          for (;I != J && Size < MaxArgBytes; ++I)
1399          {
1400             if((*I).Pkg.end() == true)
1401                continue;
1402             if (I->Op == Item::Configure && disappearedPkgs.find(I->Pkg.FullName(true)) != disappearedPkgs.end())
1403                continue;
1404             // We keep this here to allow "smooth" transitions from e.g. multiarch dpkg/ubuntu to dpkg/debian
1405             if (dpkgMultiArch == false && (I->Pkg.Arch() == nativeArch ||
1406                                            strcmp(I->Pkg.Arch(), "all") == 0 ||
1407                                            strcmp(I->Pkg.Arch(), "none") == 0))
1408             {
1409                char const * const name = I->Pkg.Name();
1410                ADDARG(name);
1411             }
1412             else
1413             {
1414                pkgCache::VerIterator PkgVer;
1415                std::string name = I->Pkg.Name();
1416                if (Op == Item::Remove || Op == Item::Purge)
1417                {
1418                   PkgVer = I->Pkg.CurrentVer();
1419                   if(PkgVer.end() == true)
1420                      PkgVer = FindNowVersion(I->Pkg);
1421                }
1422                else
1423                   PkgVer = Cache[I->Pkg].InstVerIter(Cache);
1424                if (strcmp(I->Pkg.Arch(), "none") == 0)
1425                   ; // never arch-qualify a package without an arch
1426                else if (PkgVer.end() == false)
1427                   name.append(":").append(PkgVer.Arch());
1428                else
1429                   _error->Warning("Can not find PkgVer for '%s'", name.c_str());
1430                char * const fullname = strdup(name.c_str());
1431                Packages.push_back(fullname);
1432                ADDARG(fullname);
1433             }
1434          }
1435          // skip configure action if all sheduled packages disappeared
1436          if (oldSize == Size)
1437             continue;
1438       }
1439 #undef ADDARG
1440
1441       J = I;
1442
1443       if (_config->FindB("Debug::pkgDPkgPM",false) == true)
1444       {
1445          for (std::vector<const char *>::const_iterator a = Args.begin();
1446               a != Args.end(); ++a)
1447             clog << *a << ' ';
1448          clog << endl;
1449          continue;
1450       }
1451       Args.push_back(NULL);
1452
1453       cout << flush;
1454       clog << flush;
1455       cerr << flush;
1456
1457       /* Mask off sig int/quit. We do this because dpkg also does when
1458          it forks scripts. What happens is that when you hit ctrl-c it sends
1459          it to all processes in the group. Since dpkg ignores the signal
1460          it doesn't die but we do! So we must also ignore it */
1461       sighandler_t old_SIGQUIT = signal(SIGQUIT,SIG_IGN);
1462       sighandler_t old_SIGINT = signal(SIGINT,SigINT);
1463
1464       // Check here for any SIGINT
1465       if (pkgPackageManager::SigINTStop && (Op == Item::Remove || Op == Item::Purge || Op == Item::Install))
1466          break;
1467
1468
1469       // ignore SIGHUP as well (debian #463030)
1470       sighandler_t old_SIGHUP = signal(SIGHUP,SIG_IGN);
1471
1472       // now run dpkg
1473       d->progress->StartDpkg();
1474       std::set<int> KeepFDs;
1475       KeepFDs.insert(fd[1]);
1476       MergeKeepFdsFromConfiguration(KeepFDs);
1477       pid_t Child = ExecFork(KeepFDs);
1478       if (Child == 0)
1479       {
1480          // This is the child
1481          SetupSlavePtyMagic();
1482          close(fd[0]); // close the read end of the pipe
1483
1484          dpkgChrootDirectory();
1485
1486          if (chdir(_config->FindDir("DPkg::Run-Directory","/").c_str()) != 0)
1487             _exit(100);
1488
1489          if (_config->FindB("DPkg::FlushSTDIN",true) == true && isatty(STDIN_FILENO))
1490          {
1491             int Flags;
1492             int dummy = 0;
1493             if ((Flags = fcntl(STDIN_FILENO,F_GETFL,dummy)) < 0)
1494                _exit(100);
1495
1496             // Discard everything in stdin before forking dpkg
1497             if (fcntl(STDIN_FILENO,F_SETFL,Flags | O_NONBLOCK) < 0)
1498                _exit(100);
1499
1500             while (read(STDIN_FILENO,&dummy,1) == 1);
1501
1502             if (fcntl(STDIN_FILENO,F_SETFL,Flags & (~(long)O_NONBLOCK)) < 0)
1503                _exit(100);
1504          }
1505
1506          /* No Job Control Stop Env is a magic dpkg var that prevents it
1507             from using sigstop */
1508          putenv((char *)"DPKG_NO_TSTP=yes");
1509          execvp(Args[0], (char**) &Args[0]);
1510          cerr << "Could not exec dpkg!" << endl;
1511          _exit(100);
1512       }
1513
1514       // apply ionice
1515       if (_config->FindB("DPkg::UseIoNice", false) == true)
1516          ionice(Child);
1517
1518       // Wait for dpkg
1519       int Status = 0;
1520
1521       // we read from dpkg here
1522       int const _dpkgin = fd[0];
1523       close(fd[1]);                        // close the write end of the pipe
1524
1525       // setups fds
1526       sigemptyset(&d->sigmask);
1527       sigprocmask(SIG_BLOCK,&d->sigmask,&d->original_sigmask);
1528
1529       /* free vectors (and therefore memory) as we don't need the included data anymore */
1530       for (std::vector<char *>::const_iterator p = Packages.begin();
1531            p != Packages.end(); ++p)
1532          free(*p);
1533       Packages.clear();
1534
1535       // the result of the waitpid call
1536       int res;
1537       int select_ret;
1538       while ((res=waitpid(Child,&Status, WNOHANG)) != Child) {
1539          if(res < 0) {
1540             // FIXME: move this to a function or something, looks ugly here
1541             // error handling, waitpid returned -1
1542             if (errno == EINTR)
1543                continue;
1544             RunScripts("DPkg::Post-Invoke");
1545
1546             // Restore sig int/quit
1547             signal(SIGQUIT,old_SIGQUIT);
1548             signal(SIGINT,old_SIGINT);
1549
1550             signal(SIGHUP,old_SIGHUP);
1551             return _error->Errno("waitpid","Couldn't wait for subprocess");
1552          }
1553
1554          // wait for input or output here
1555          FD_ZERO(&rfds);
1556          if (d->master >= 0 && !d->stdin_is_dev_null)
1557             FD_SET(0, &rfds);
1558          FD_SET(_dpkgin, &rfds);
1559          if(d->master >= 0)
1560             FD_SET(d->master, &rfds);
1561          tv.tv_sec = 0;
1562          tv.tv_nsec = d->progress->GetPulseInterval();
1563          select_ret = pselect(max(d->master, _dpkgin)+1, &rfds, NULL, NULL,
1564                               &tv, &d->original_sigmask);
1565          if (select_ret < 0 && (errno == EINVAL || errno == ENOSYS))
1566             select_ret = racy_pselect(max(d->master, _dpkgin)+1, &rfds, NULL,
1567                                       NULL, &tv, &d->original_sigmask);
1568          d->progress->Pulse();
1569          if (select_ret == 0)
1570             continue;
1571          else if (select_ret < 0 && errno == EINTR)
1572             continue;
1573          else if (select_ret < 0)
1574          {
1575             perror("select() returned error");
1576             continue;
1577          }
1578
1579          if(d->master >= 0 && FD_ISSET(d->master, &rfds))
1580             DoTerminalPty(d->master);
1581          if(d->master >= 0 && FD_ISSET(0, &rfds))
1582             DoStdin(d->master);
1583          if(FD_ISSET(_dpkgin, &rfds))
1584             DoDpkgStatusFd(_dpkgin);
1585       }
1586       close(_dpkgin);
1587
1588       // Restore sig int/quit
1589       signal(SIGQUIT,old_SIGQUIT);
1590       signal(SIGINT,old_SIGINT);
1591
1592       signal(SIGHUP,old_SIGHUP);
1593       // Check for an error code.
1594       if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0)
1595       {
1596          // if it was set to "keep-dpkg-runing" then we won't return
1597          // here but keep the loop going and just report it as a error
1598          // for later
1599          bool const stopOnError = _config->FindB("Dpkg::StopOnError",true);
1600
1601          if (WIFSIGNALED(Status) != 0 && WTERMSIG(Status) == SIGSEGV)
1602             strprintf(d->dpkg_error, "Sub-process %s received a segmentation fault.",Args[0]);
1603          else if (WIFEXITED(Status) != 0)
1604             strprintf(d->dpkg_error, "Sub-process %s returned an error code (%u)",Args[0],WEXITSTATUS(Status));
1605          else
1606             strprintf(d->dpkg_error, "Sub-process %s exited unexpectedly",Args[0]);
1607          _error->Error("%s", d->dpkg_error.c_str());
1608
1609          if(stopOnError)
1610             break;
1611       }
1612    }
1613    // dpkg is done at this point
1614    d->progress->Stop();
1615    StopPtyMagic();
1616    CloseLog();
1617
1618    if (pkgPackageManager::SigINTStop)
1619        _error->Warning(_("Operation was interrupted before it could finish"));
1620
1621    if (RunScripts("DPkg::Post-Invoke") == false)
1622       return false;
1623
1624    if (_config->FindB("Debug::pkgDPkgPM",false) == false)
1625    {
1626       std::string const oldpkgcache = _config->FindFile("Dir::cache::pkgcache");
1627       if (oldpkgcache.empty() == false && RealFileExists(oldpkgcache) == true &&
1628           unlink(oldpkgcache.c_str()) == 0)
1629       {
1630          std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
1631          if (srcpkgcache.empty() == false && RealFileExists(srcpkgcache) == true)
1632          {
1633             _error->PushToStack();
1634             pkgCacheFile CacheFile;
1635             CacheFile.BuildCaches(NULL, true);
1636             _error->RevertToStack();
1637          }
1638       }
1639    }
1640
1641    Cache.writeStateFile(NULL);
1642    return d->dpkg_error.empty();
1643 }
1644
1645 void SigINT(int /*sig*/) {
1646    pkgPackageManager::SigINTStop = true;
1647 }
1648                                                                         /*}}}*/
1649 // pkgDpkgPM::Reset - Dump the contents of the command list             /*{{{*/
1650 // ---------------------------------------------------------------------
1651 /* */
1652 void pkgDPkgPM::Reset()
1653 {
1654    List.erase(List.begin(),List.end());
1655 }
1656                                                                         /*}}}*/
1657 // pkgDpkgPM::WriteApportReport - write out error report pkg failure    /*{{{*/
1658 // ---------------------------------------------------------------------
1659 /* */
1660 void pkgDPkgPM::WriteApportReport(const char *pkgpath, const char *errormsg)
1661 {
1662    // If apport doesn't exist or isn't installed do nothing
1663    // This e.g. prevents messages in 'universes' without apport
1664    pkgCache::PkgIterator apportPkg = Cache.FindPkg("apport");
1665    if (apportPkg.end() == true || apportPkg->CurrentVer == 0)
1666       return;
1667
1668    string pkgname, reportfile, srcpkgname, pkgver, arch;
1669    string::size_type pos;
1670    FILE *report;
1671
1672    if (_config->FindB("Dpkg::ApportFailureReport", true) == false)
1673    {
1674       std::clog << "configured to not write apport reports" << std::endl;
1675       return;
1676    }
1677
1678    // only report the first errors
1679    if(pkgFailures > _config->FindI("APT::Apport::MaxReports", 3))
1680    {
1681       std::clog << _("No apport report written because MaxReports is reached already") << std::endl;
1682       return;
1683    }
1684
1685    // check if its not a follow up error
1686    const char *needle = dgettext("dpkg", "dependency problems - leaving unconfigured");
1687    if(strstr(errormsg, needle) != NULL) {
1688       std::clog << _("No apport report written because the error message indicates its a followup error from a previous failure.") << std::endl;
1689       return;
1690    }
1691
1692    // do not report disk-full failures
1693    if(strstr(errormsg, strerror(ENOSPC)) != NULL) {
1694       std::clog << _("No apport report written because the error message indicates a disk full error") << std::endl;
1695       return;
1696    }
1697
1698    // do not report out-of-memory failures
1699    if(strstr(errormsg, strerror(ENOMEM)) != NULL ||
1700       strstr(errormsg, "failed to allocate memory") != NULL) {
1701       std::clog << _("No apport report written because the error message indicates a out of memory error") << std::endl;
1702       return;
1703    }
1704
1705    // do not report bugs regarding inaccessible local files
1706    if(strstr(errormsg, strerror(ENOENT)) != NULL ||
1707       strstr(errormsg, "cannot access archive") != NULL) {
1708       std::clog << _("No apport report written because the error message indicates an issue on the local system") << std::endl;
1709       return;
1710    }
1711
1712    // do not report errors encountered when decompressing packages
1713    if(strstr(errormsg, "--fsys-tarfile returned error exit status 2") != NULL) {
1714       std::clog << _("No apport report written because the error message indicates an issue on the local system") << std::endl;
1715       return;
1716    }
1717
1718    // do not report dpkg I/O errors, this is a format string, so we compare
1719    // the prefix and the suffix of the error with the dpkg error message
1720    vector<string> io_errors;
1721    io_errors.push_back(string("failed to read"));
1722    io_errors.push_back(string("failed to write"));
1723    io_errors.push_back(string("failed to seek"));
1724    io_errors.push_back(string("unexpected end of file or stream"));
1725
1726    for (vector<string>::iterator I = io_errors.begin(); I != io_errors.end(); ++I)
1727    {
1728       vector<string> list = VectorizeString(dgettext("dpkg", (*I).c_str()), '%');
1729       if (list.size() > 1) {
1730          // we need to split %s, VectorizeString only allows char so we need
1731          // to kill the "s" manually
1732          if (list[1].size() > 1) {
1733             list[1].erase(0, 1);
1734             if(strstr(errormsg, list[0].c_str()) &&
1735                strstr(errormsg, list[1].c_str())) {
1736                std::clog << _("No apport report written because the error message indicates a dpkg I/O error") << std::endl;
1737                return;
1738             }
1739          }
1740       }
1741    }
1742
1743    // get the pkgname and reportfile
1744    pkgname = flNotDir(pkgpath);
1745    pos = pkgname.find('_');
1746    if(pos != string::npos)
1747       pkgname = pkgname.substr(0, pos);
1748
1749    // find the package versin and source package name
1750    pkgCache::PkgIterator Pkg = Cache.FindPkg(pkgname);
1751    if (Pkg.end() == true)
1752       return;
1753    pkgCache::VerIterator Ver = Cache.GetCandidateVer(Pkg);
1754    if (Ver.end() == true)
1755       return;
1756    pkgver = Ver.VerStr() == NULL ? "unknown" : Ver.VerStr();
1757
1758    // if the file exists already, we check:
1759    // - if it was reported already (touched by apport).
1760    //   If not, we do nothing, otherwise
1761    //    we overwrite it. This is the same behaviour as apport
1762    // - if we have a report with the same pkgversion already
1763    //   then we skip it
1764    reportfile = flCombine("/var/crash",pkgname+".0.crash");
1765    if(FileExists(reportfile))
1766    {
1767       struct stat buf;
1768       char strbuf[255];
1769
1770       // check atime/mtime
1771       stat(reportfile.c_str(), &buf);
1772       if(buf.st_mtime > buf.st_atime)
1773          return;
1774
1775       // check if the existing report is the same version
1776       report = fopen(reportfile.c_str(),"r");
1777       while(fgets(strbuf, sizeof(strbuf), report) != NULL)
1778       {
1779          if(strstr(strbuf,"Package:") == strbuf)
1780          {
1781             char pkgname[255], version[255];
1782             if(sscanf(strbuf, "Package: %254s %254s", pkgname, version) == 2)
1783                if(strcmp(pkgver.c_str(), version) == 0)
1784                {
1785                   fclose(report);
1786                   return;
1787                }
1788          }
1789       }
1790       fclose(report);
1791    }
1792
1793    // now write the report
1794    arch = _config->Find("APT::Architecture");
1795    report = fopen(reportfile.c_str(),"w");
1796    if(report == NULL)
1797       return;
1798    if(_config->FindB("DPkgPM::InitialReportOnly",false) == true)
1799       chmod(reportfile.c_str(), 0);
1800    else
1801       chmod(reportfile.c_str(), 0600);
1802    fprintf(report, "ProblemType: Package\n");
1803    fprintf(report, "Architecture: %s\n", arch.c_str());
1804    time_t now = time(NULL);
1805    fprintf(report, "Date: %s" , ctime(&now));
1806    fprintf(report, "Package: %s %s\n", pkgname.c_str(), pkgver.c_str());
1807    fprintf(report, "SourcePackage: %s\n", Ver.SourcePkgName());
1808    fprintf(report, "ErrorMessage:\n %s\n", errormsg);
1809
1810    // ensure that the log is flushed
1811    if(d->term_out)
1812       fflush(d->term_out);
1813
1814    // attach terminal log it if we have it
1815    string logfile_name = _config->FindFile("Dir::Log::Terminal");
1816    if (!logfile_name.empty())
1817    {
1818       FILE *log = NULL;
1819
1820       fprintf(report, "DpkgTerminalLog:\n");
1821       log = fopen(logfile_name.c_str(),"r");
1822       if(log != NULL)
1823       {
1824          char buf[1024];
1825          while( fgets(buf, sizeof(buf), log) != NULL)
1826             fprintf(report, " %s", buf);
1827          fprintf(report, " \n");
1828          fclose(log);
1829       }
1830    }
1831
1832    // attach history log it if we have it
1833    string histfile_name = _config->FindFile("Dir::Log::History");
1834    if (!histfile_name.empty())
1835    {
1836       fprintf(report, "DpkgHistoryLog:\n");
1837       FILE* log = fopen(histfile_name.c_str(),"r");
1838       if(log != NULL)
1839       {
1840          char buf[1024];
1841          while( fgets(buf, sizeof(buf), log) != NULL)
1842             fprintf(report, " %s", buf);
1843          fclose(log);
1844       }
1845    }
1846
1847    // log the ordering
1848    const char *ops_str[] = {"Install", "Configure","Remove","Purge"};
1849    fprintf(report, "AptOrdering:\n");
1850    for (vector<Item>::iterator I = List.begin(); I != List.end(); ++I)
1851       if ((*I).Pkg != NULL)
1852          fprintf(report, " %s: %s\n", (*I).Pkg.Name(), ops_str[(*I).Op]);
1853       else
1854          fprintf(report, " %s: %s\n", "NULL", ops_str[(*I).Op]);
1855
1856    // attach dmesg log (to learn about segfaults)
1857    if (FileExists("/bin/dmesg"))
1858    {
1859       fprintf(report, "Dmesg:\n");
1860       FILE *log = popen("/bin/dmesg","r");
1861       if(log != NULL)
1862       {
1863          char buf[1024];
1864          while( fgets(buf, sizeof(buf), log) != NULL)
1865             fprintf(report, " %s", buf);
1866          pclose(log);
1867       }
1868    }
1869
1870    // attach df -l log (to learn about filesystem status)
1871    if (FileExists("/bin/df"))
1872    {
1873
1874       fprintf(report, "Df:\n");
1875       FILE *log = popen("/bin/df -l","r");
1876       if(log != NULL)
1877       {
1878          char buf[1024];
1879          while( fgets(buf, sizeof(buf), log) != NULL)
1880             fprintf(report, " %s", buf);
1881          pclose(log);
1882       }
1883    }
1884
1885    fclose(report);
1886
1887 }
1888                                                                         /*}}}*/