rewrite all TFRewrite instances to use the new pkgTagSection::Write

[apt.git] / cmdline / apt-mark.cc

diff --git a/cmdline/apt-mark.cc b/cmdline/apt-mark.cc
index 2702dbbd367e49fdb8de20c8c42a4a1a7863d466..de1c80309c8ef50afb284a303a4ff2be3475f152 100644 (file)
--- a/cmdline/apt-mark.cc
+++ b/cmdline/apt-mark.cc
@@ -274,6 +274,70 @@ static bool DoHold(CommandLine &CmdL)
       return true;
    }
 
+   APT::PackageList keepoffset;
+   for (APT::PackageList::iterator Pkg = pkgset.begin(); Pkg != pkgset.end(); ++Pkg)
+   {
+      if (Pkg->CurrentVer != 0)
+        continue;
+      keepoffset.insert(*Pkg);
+   }
+
+   if (keepoffset.empty() == false)
+   {
+      Args.erase(Args.begin() + BaseArgs, Args.end());
+      Args.push_back("--merge-avail");
+      // FIXME: supported only since 1.17.7 in dpkg
+      Args.push_back("-");
+      Args.push_back(NULL);
+
+      int external[2] = {-1, -1};
+      if (pipe(external) != 0)
+        return _error->WarningE("DoHold", "Can't create IPC pipe for dpkg --merge-avail");
+
+      pid_t dpkgMergeAvail = ExecFork();
+      if (dpkgMergeAvail == 0)
+      {
+        close(external[1]);
+        std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
+        if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
+           _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --merge-avail", chrootDir.c_str());
+        dup2(external[0], STDIN_FILENO);
+        int const nullfd = open("/dev/null", O_RDONLY);
+        dup2(nullfd, STDOUT_FILENO);
+        execvp(Args[0], (char**) &Args[0]);
+        _error->WarningE("dpkgGo", "Can't get dpkg --merge-avail running!");
+        _exit(2);
+      }
+
+      FILE* dpkg = fdopen(external[1], "w");
+      for (APT::PackageList::iterator Pkg = keepoffset.begin(); Pkg != keepoffset.end(); ++Pkg)
+      {
+        char const * Arch;
+        if (Pkg->VersionList != 0)
+           Arch = Pkg.VersionList().Arch();
+        else
+           Arch = Pkg.Arch();
+        fprintf(dpkg, "Package: %s\nVersion: 0~\nArchitecture: %s\nMaintainer: Dummy Example <dummy@example.org>\n"
+              "Description: dummy package record\n A record is needed to put a package on hold, so here it is.\n\n", Pkg.Name(), Arch);
+      }
+      fclose(dpkg);
+      keepoffset.clear();
+
+      if (dpkgMergeAvail > 0)
+      {
+        int Status = 0;
+        while (waitpid(dpkgMergeAvail, &Status, 0) != dpkgMergeAvail)
+        {
+           if (errno == EINTR)
+              continue;
+           _error->WarningE("dpkgGo", _("Waited for %s but it wasn't there"), "dpkg --merge-avail");
+           break;
+        }
+        if (WIFEXITED(Status) == false || WEXITSTATUS(Status) != 0)
+           return _error->Error(_("Executing dpkg failed. Are you root?"));
+      }
+   }
+
    Args.erase(Args.begin() + BaseArgs, Args.end());
    Args.push_back("--set-selections");
    Args.push_back(NULL);
@@ -289,12 +353,9 @@ static bool DoHold(CommandLine &CmdL)
       std::string const chrootDir = _config->FindDir("DPkg::Chroot-Directory");
       if (chrootDir != "/" && chroot(chrootDir.c_str()) != 0 && chdir("/") != 0)
         _error->WarningE("getArchitecture", "Couldn't chroot into %s for dpkg --set-selections", chrootDir.c_str());
-      int const nullfd = open("/dev/null", O_RDONLY);
       dup2(external[0], 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!");
+      _error->WarningE("dpkgGo", "Can't get dpkg --set-selections running!");
       _exit(2);
    }
 
@@ -382,8 +443,7 @@ static bool ShowHold(CommandLine &CmdL)
 /* */
 static bool ShowHelp(CommandLine &)
 {
-   ioprintf(cout,_("%s %s for %s compiled on %s %s\n"),PACKAGE,PACKAGE_VERSION,
-           COMMON_ARCH,__DATE__,__TIME__);
+   ioprintf(std::cout, "%s %s (%s)\n", PACKAGE, PACKAGE_VERSION, COMMON_ARCH);
 
    cout <<
     _("Usage: apt-mark [options] {auto|manual} pkg1 [pkg2 ...]\n"