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authorJulian Andres Klode <julian.klode@canonical.com>2019-04-15 11:32:50 +0200
committerJulian Andres Klode <julian.klode@canonical.com>2019-05-07 11:17:52 +0200
commitc5b8a857f2535fe284426cefda2fbd1bbb3d5808 (patch)
tree03e99b4fc41c6c84d17053ae2016118eb97caa75
parenta76f9705ab4dfa439fa2c8788ee67d0766700d07 (diff)
Prevent shutdown while running dpkg
As long as we are running dpkg, keep an inhibitor that blocks us from shutting down. LP: #1820886 (cherry picked from commit 96aef11a5cf400377a52f7e93e70944b17e249d1) (cherry picked from commit 8ea79afcadead5a5b7d94bf8623cb833859f6d80)
-rw-r--r--CMake/FindSystemd.cmake24
-rw-r--r--CMake/config.h.in3
-rw-r--r--CMakeLists.txt5
-rw-r--r--apt-pkg/CMakeLists.txt2
-rw-r--r--apt-pkg/contrib/fileutl.cc48
-rw-r--r--apt-pkg/contrib/fileutl.h2
-rw-r--r--apt-pkg/deb/dpkgpm.cc15
-rw-r--r--debian/control1
-rw-r--r--doc/examples/configure-index3
9 files changed, 103 insertions, 0 deletions
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 bd0da8649..22be6998e 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 0481f4ee8..b45692517 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -114,6 +114,11 @@ 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 eab05de4f..b38186b3d 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>
@@ -3387,3 +3390,48 @@ 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 6249b7c16..35cd8139a 100644
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -294,4 +294,6 @@ 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 c8e55fe14..2700bef7b 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/control b/debian/control
index 333150ff8..be0706439 100644
--- a/debian/control
+++ b/debian/control
@@ -22,6 +22,7 @@ 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),
pkg-config,
diff --git a/doc/examples/configure-index b/doc/examples/configure-index
index df91d7738..bdfb1ad5e 100644
--- a/doc/examples/configure-index
+++ b/doc/examples/configure-index
@@ -498,6 +498,9 @@ 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