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Bug#928395: unblock: apt/1.8.1



Package: release.debian.org
Severity: normal
User: release.debian.org@packages.debian.org
Usertags: unblock

Please unblock package apt

I'd like to add systemd inhibitor support to apt in buster, so people
don't shoot each other in the foot, in case one admin reboots a machine
while somebody else is installing patches.

The diff is quite small.

I'd also love to smuggle in some additional kernel package names in
debian/apt.conf.autoremove - they don't really affect, only Ubuntu - we
share the 1.8.y series for like 9 mo, but it's not an invasive change
(there's like 0 potential of a regression), I think they are:

  linux-buildinfo
  linux-image-unsigned
  linux-source

But I have not committed them yet.

unblock apt/1.8.1

-- System Information:
Debian Release: buster/sid
  APT prefers eoan
  APT policy: (991, 'eoan'), (500, 'eoan'), (500, 'cosmic-security')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.0.0-13-generic (SMP w/8 CPU cores)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

-- 
debian developer - deb.li/jak | jak-linux.org - free software dev
ubuntu core developer                              i speak de, en
diff --git a/CMake/FindSystemd.cmake b/CMake/FindSystemd.cmake
new file mode 100644
index 000000000..1c7a7debf
--- /dev/null
+++ b/CMake/FindSystemd.cmake
@@ -0,0 +1,24 @@
+# - Try to find SYSTEMD
+# Once done, this will define
+#
+#  SYSTEMD_FOUND - system has SYSTEMD
+#  SYSTEMD_INCLUDE_DIRS - the SYSTEMD include directories
+#  SYSTEMD_LIBRARIES - the SYSTEMD library
+find_package(PkgConfig)
+
+pkg_check_modules(SYSTEMD_PKGCONF libsystemd)
+
+find_path(SYSTEMD_INCLUDE_DIRS
+  NAMES systemd/sd-bus.h
+  PATHS ${SYSTEMD_PKGCONF_INCLUDE_DIRS}
+)
+
+find_library(SYSTEMD_LIBRARIES
+  NAMES systemd
+  PATHS ${SYSTEMD_PKGCONF_LIBRARY_DIRS}
+)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Systemd DEFAULT_MSG SYSTEMD_INCLUDE_DIRS SYSTEMD_LIBRARIES)
+
+mark_as_advanced(SYSTEMD_INCLUDE_DIRS SYSTEMD_LIBRARIES)
diff --git a/CMake/config.h.in b/CMake/config.h.in
index 74d78fdb2..a9528ccfa 100644
--- a/CMake/config.h.in
+++ b/CMake/config.h.in
@@ -20,6 +20,9 @@
 /* Define if we have the zstd library for zst */
 #cmakedefine HAVE_ZSTD
 
+/* Define if we have the systemd library */
+#cmakedefine HAVE_SYSTEMD
+
 /* Define if we have the udev library */
 #cmakedefine HAVE_UDEV
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60f329078..500186105 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -115,6 +115,11 @@ if (UDEV_FOUND)
   set(HAVE_UDEV 1)
 endif()
 
+find_package(Systemd)
+if (SYSTEMD_FOUND)
+  set(HAVE_SYSTEMD 1)
+endif()
+
 find_package(Seccomp)
 if (SECCOMP_FOUND)
   set(HAVE_SECCOMP 1)
diff --git a/apt-pkg/CMakeLists.txt b/apt-pkg/CMakeLists.txt
index 64709ce34..ce73c6a34 100644
--- a/apt-pkg/CMakeLists.txt
+++ b/apt-pkg/CMakeLists.txt
@@ -46,6 +46,7 @@ target_include_directories(apt-pkg
                                    ${LZ4_INCLUDE_DIRS}
                                    $<$<BOOL:${ZSTD_FOUND}>:${ZSTD_INCLUDE_DIRS}>
                                    $<$<BOOL:${UDEV_FOUND}>:${UDEV_INCLUDE_DIRS}>
+                                   $<$<BOOL:${SYSTEMD_FOUND}>:${SYSTEMD_INCLUDE_DIRS}>
                                    ${ICONV_INCLUDE_DIRS}
 )
 
@@ -58,6 +59,7 @@ target_link_libraries(apt-pkg
                              ${LZ4_LIBRARIES}
                              $<$<BOOL:${ZSTD_FOUND}>:${ZSTD_LIBRARIES}>
                              $<$<BOOL:${UDEV_FOUND}>:${UDEV_LIBRARIES}>
+                             $<$<BOOL:${SYSTEMD_FOUND}>:${SYSTEMD_LIBRARIES}>
                              ${ICONV_LIBRARIES}
 )
 set_target_properties(apt-pkg PROPERTIES VERSION ${MAJOR}.${MINOR})
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index 0c0cb05ea..4f123491b 100644
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -71,6 +71,9 @@
 #ifdef HAVE_ZSTD
 #include <zstd.h>
 #endif
+#ifdef HAVE_SYSTEMD
+#include <systemd/sd-bus.h>
+#endif
 #include <endian.h>
 #include <stdint.h>
 
@@ -3393,3 +3396,48 @@ bool OpenConfigurationFileFd(std::string const &File, FileFd &Fd) /*{{{*/
    return true;
 }
 									/*}}}*/
+int Inhibit(const char *what, const char *who, const char *why, const char *mode) /*{{{*/
+{
+#ifdef HAVE_SYSTEMD
+   sd_bus_error error = SD_BUS_ERROR_NULL;
+   sd_bus_message *m = NULL;
+   sd_bus *bus = NULL;
+   int fd;
+   int r;
+
+   r = sd_bus_open_system(&bus);
+   if (r < 0)
+      goto out;
+
+   r = sd_bus_call_method(bus,
+			  "org.freedesktop.login1",
+			  "/org/freedesktop/login1",
+			  "org.freedesktop.login1.Manager",
+			  "Inhibit",
+			  &error,
+			  &m,
+			  "ssss",
+			  what,
+			  who,
+			  why,
+			  mode);
+   if (r < 0)
+      goto out;
+
+   r = sd_bus_message_read(m, "h", &fd);
+   if (r < 0)
+      goto out;
+
+   // We received a file descriptor, return it - systemd will close the read fd
+   // on free, so let's duplicate it here.
+   r = dup(fd);
+out:
+   sd_bus_error_free(&error);
+   sd_bus_message_unref(m);
+   sd_bus_unref(bus);
+   return r;
+#else
+   return -ENOTSUP;
+#endif
+}
+									/*}}}*/
diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h
index 862880c31..9005b81b5 100644
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -300,4 +300,6 @@ bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode);
 
 APT_HIDDEN bool OpenConfigurationFileFd(std::string const &File, FileFd &Fd);
 
+APT_HIDDEN int Inhibit(const char *what, const char *who, const char *why, const char *mode);
+
 #endif
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index 3c707e220..ffa880df2 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -1463,6 +1463,21 @@ bool pkgDPkgPM::ExpandPendingCalls(std::vector<Item> &List, pkgDepCache &Cache)
 }
 bool pkgDPkgPM::Go(APT::Progress::PackageManager *progress)
 {
+   struct Inhibitor
+   {
+      int Fd = -1;
+      Inhibitor()
+      {
+	 if (_config->FindB("DPkg::Inhibit-Shutdown", true))
+	    Fd = Inhibit("shutdown", "APT", "APT is installing or removing packages", "block");
+      }
+      ~Inhibitor()
+      {
+	 if (Fd > 0)
+	    close(Fd);
+      }
+   } inhibitor;
+
    // explicitly remove&configure everything for hookscripts and progress building
    // we need them only temporarily through, so keep the length and erase afterwards
    decltype(List)::const_iterator::difference_type explicitIdx =
diff --git a/debian/changelog b/debian/changelog
index ea66922bf..a150c0769 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+apt (1.8.1) UNRELEASED; urgency=medium
+
+  * Add test case for local-only packages pinned to never
+  * Prevent shutdown while running dpkg (LP: #1820886)
+
+ -- Julian Andres Klode <jak@debian.org>  Fri, 03 May 2019 16:49:24 +0200
+
 apt (1.8.0) unstable; urgency=medium
 
   [ David Kalnischkies ]
diff --git a/debian/control b/debian/control
index 18b38ad39..a61210127 100644
--- a/debian/control
+++ b/debian/control
@@ -21,6 +21,7 @@ Build-Depends: cmake (>= 3.4),
                liblz4-dev (>= 0.0~r126),
                liblzma-dev,
                libseccomp-dev [amd64 arm64 armel armhf i386 mips mips64el mipsel ppc64el s390x hppa powerpc powerpcspe ppc64 x32],
+               libsystemd-dev [linux-any],
                libudev-dev [linux-any],
                libzstd-dev (>= 1.0),
                ninja-build,
diff --git a/doc/examples/configure-index b/doc/examples/configure-index
index 743e676de..5e317d7e0 100644
--- a/doc/examples/configure-index
+++ b/doc/examples/configure-index
@@ -503,6 +503,9 @@ DPkg
       progress-bg "<STRING>";
       progress-bar "<BOOL>";
    };
+
+   // Set a shutdown block inhibitor on systemd systems while running dpkg
+   Inhibit-Shutdown "<BOOL>";
 }
 
 /* Options you can set to see some debugging text They correspond to names
diff --git a/doc/po/apt-doc.pot b/doc/po/apt-doc.pot
index 37287d045..b175ce27d 100644
--- a/doc/po/apt-doc.pot
+++ b/doc/po/apt-doc.pot
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: apt-doc 1.8.0\n"
 "Report-Msgid-Bugs-To: APT Development Team <deity@lists.debian.org>\n"
-"POT-Creation-Date: 2019-03-08 09:41+0100\n"
+"POT-Creation-Date: 2019-05-03 16:51+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
diff --git a/po/apt-all.pot b/po/apt-all.pot
index e424d23b9..bc5f6b007 100644
--- a/po/apt-all.pot
+++ b/po/apt-all.pot
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: apt 1.8.0\n"
 "Report-Msgid-Bugs-To: APT Development Team <deity@lists.debian.org>\n"
-"POT-Creation-Date: 2019-03-08 09:41+0100\n"
+"POT-Creation-Date: 2019-05-03 16:51+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
diff --git a/test/integration/test-policy-pinning b/test/integration/test-policy-pinning
index 35e178871..b871f724b 100755
--- a/test/integration/test-policy-pinning
+++ b/test/integration/test-policy-pinning
@@ -407,7 +407,20 @@ testsuccessequal "coolstuff:
         500 file:${tmppath}/aptarchive stable/main all Packages" aptcache policy coolstuff
 
 
-
+msgmsg "Check that local-only versions can be pinned correctly (LP: #1821308)"
+echo "Package: coolstuff
+Pin: version 2.0~bpo1
+Pin-Priority: 1000" > rootdir/etc/apt/preferences
+testsuccessequal "coolstuff:
+  Installed: 2.0~bpo1
+  Candidate: 2.0~bpo1
+  Version table:
+     2.0~bpo2 100
+        100 file:${tmppath}/aptarchive backports/main all Packages
+ *** 2.0~bpo1 1000
+        100 ${tmppath}/rootdir/var/lib/dpkg/status
+     1.0 500
+        500 file:${tmppath}/aptarchive stable/main all Packages" aptcache policy coolstuff
 
 # Check for 0
 echo "Package: coolstuff

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