From a9b724eedd0c9d8c36725c5b8f57d51ea9f7dcd1 Mon Sep 17 00:00:00 2001 From: David Kalnischkies Date: Fri, 11 Nov 2016 11:58:56 +0100 Subject: [PATCH] add hidden config to set packages as Essential/Important MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit You can pretty much achieve the same with a local dummy package if you want to, but libapt has an inbuilt setting for essential: "apt" which can be overridden with this option as well – it could be helpful in quick tests and what not so adding this alternative shouldn't really hurt much. We aren't going to document them much through as care must be taken in regards to the binary caches as they aren't invalidated by config options alone, so the effects of old settings could still be in them, similar to the other already existing pkgCacheGen option(s). Closes: 767891 Thanks: Anthony Towns for initial patch --- apt-pkg/deb/deblistparser.cc | 16 ++- apt-pkg/deb/deblistparser.h | 4 +- doc/examples/configure-index | 7 +- .../test-bug-767891-force-essential-important | 100 ++++++++++++++++++ 4 files changed, 122 insertions(+), 5 deletions(-) create mode 100755 test/integration/test-bug-767891-force-essential-important diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc index 99e806470..0f9fe310f 100644 --- a/apt-pkg/deb/deblistparser.cc +++ b/apt-pkg/deb/deblistparser.cc @@ -50,8 +50,18 @@ static const debListParser::WordList PrioList[] = { in Step(), if no Architecture is given we will accept every arch we would accept in general with checkArchitecture() */ debListParser::debListParser(FileFd *File) : - pkgCacheListParser(), d(NULL), Tags(File) + pkgCacheListParser(), Tags(File) { + // this dance allows an empty value to override the default + if (_config->Exists("pkgCacheGen::ForceEssential")) + { + forceEssential = _config->FindVector("pkgCacheGen::ForceEssential"); + if (forceEssential.empty() == false && _config->Find("pkgCacheGen::ForceEssential").empty()) + forceEssential.emplace_back("apt"); + } + else + forceEssential.emplace_back("apt"); + forceImportant = _config->FindVector("pkgCacheGen::ForceImportant"); } /*}}}*/ // ListParser::Package - Return the package name /*{{{*/ @@ -311,7 +321,7 @@ bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg, if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false) return false; - if (strcmp(Pkg.Name(),"apt") == 0) + if (std::find(forceEssential.begin(), forceEssential.end(), Pkg.Name()) != forceEssential.end()) { if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) || essential == "all") @@ -319,6 +329,8 @@ bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg, else Pkg->Flags |= pkgCache::Flag::Important; } + else if (std::find(forceImportant.begin(), forceImportant.end(), Pkg.Name()) != forceImportant.end()) + Pkg->Flags |= pkgCache::Flag::Important; if (ParseStatus(Pkg,Ver) == false) return false; diff --git a/apt-pkg/deb/deblistparser.h b/apt-pkg/deb/deblistparser.h index a78312f9d..102cd62aa 100644 --- a/apt-pkg/deb/deblistparser.h +++ b/apt-pkg/deb/deblistparser.h @@ -43,8 +43,8 @@ class APT_HIDDEN debListParser : public pkgCacheListParser #endif private: - /** \brief dpointer placeholder (for later in case we need it) */ - void * const d; + std::vector forceEssential; + std::vector forceImportant; protected: pkgTagFile Tags; diff --git a/doc/examples/configure-index b/doc/examples/configure-index index dc579c394..2d0fb6c64 100644 --- a/doc/examples/configure-index +++ b/doc/examples/configure-index @@ -461,7 +461,12 @@ Debug RunScripts "false"; // debug invocation of external scripts } -pkgCacheGen::Essential "native"; // other modes: all, none, installed +pkgCacheGen +{ + Essential "native"; // other modes: all, none, installed + ForceEssential { "apt"; }; + ForceImportant ""; +} /* Whatever you do, do not use this configuration file!! Take out ONLY the portions you need! */ diff --git a/test/integration/test-bug-767891-force-essential-important b/test/integration/test-bug-767891-force-essential-important new file mode 100755 index 000000000..7a23de557 --- /dev/null +++ b/test/integration/test-bug-767891-force-essential-important @@ -0,0 +1,100 @@ +#!/bin/sh +set -e + +TESTDIR="$(readlink -f "$(dirname "$0")")" +. "$TESTDIR/framework" +setupenvironment +configarchitecture 'amd64' 'i386' + +insertinstalledpackage 'apt' 'amd64' '1' +insertinstalledpackage 'foo' 'amd64,i386' '1' 'Multi-Arch: same' +insertinstalledpackage 'bar' 'amd64' '1' 'Provides: foo' + +insertpackage 'unstable' 'foo2' 'amd64,i386' '1' 'Multi-Arch: same' + +setupaptarchive + +rm -f rootdir/var/cache/apt/*.bin +testsuccessequal 'Reading package lists... +Building dependency tree... +The following packages will be REMOVED: + apt* bar* foo* foo:i386* +WARNING: The following essential packages will be removed. +This should NOT be done unless you know exactly what you are doing! + apt +0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded. +Purg apt [1] +Purg bar [1] +Purg foo [1] +Purg foo:i386 [1]' apt purge apt foo foo:i386 bar -s + +rm -f rootdir/var/cache/apt/*.bin +testsuccessequal 'Reading package lists... +Building dependency tree... +The following packages will be REMOVED: + apt* bar* foo* foo:i386* +0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded. +Purg apt [1] +Purg bar [1] +Purg foo [1] +Purg foo:i386 [1]' apt purge apt foo foo:i386 bar -s -o pkgCacheGen::ForceEssential='' + +msgmsg 'foo:i386 got the Important flag' +rm -f rootdir/var/cache/apt/*.bin +testsuccessequal 'Reading package lists... +Building dependency tree... +The following packages will be REMOVED: + apt* bar* foo* foo:i386* +WARNING: The following essential packages will be removed. +This should NOT be done unless you know exactly what you are doing! + foo foo:i386 +0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded. +Purg apt [1] +Purg bar [1] +Purg foo [1] +Purg foo:i386 [1]' apt purge apt foo foo:i386 bar -s -o pkgCacheGen::ForceEssential='foo' + +rm -f rootdir/var/cache/apt/*.bin +testsuccessequal 'Reading package lists... +Building dependency tree... +The following packages will be REMOVED: + apt* bar* foo* foo:i386* +WARNING: The following essential packages will be removed. +This should NOT be done unless you know exactly what you are doing! + apt foo foo:i386 +0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded. +Purg apt [1] +Purg bar [1] +Purg foo [1] +Purg foo:i386 [1]' apt purge apt foo foo:i386 bar -s -o pkgCacheGen::ForceEssential::='foo' + +msgmsg 'essentials only from native' +rm -f rootdir/var/cache/apt/*.bin +testsuccessequal 'Reading package lists... +Building dependency tree... +Calculating upgrade... +The following NEW packages will be installed: + foo2 +0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. +Inst foo2 (1 unstable [amd64]) +Conf foo2 (1 unstable [amd64])' apt full-upgrade -s -o pkgCacheGen::ForceEssential::='foo2' + +msgmsg 'important only effects installed' +rm -f rootdir/var/cache/apt/*.bin +testsuccessequal 'Reading package lists... +Building dependency tree... +The following packages will be REMOVED: + apt* bar* foo* foo:i386* +WARNING: The following essential packages will be removed. +This should NOT be done unless you know exactly what you are doing! + apt foo foo:i386 +0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded. +Purg apt [1] +Purg bar [1] +Purg foo [1] +Purg foo:i386 [1]' apt purge apt foo foo:i386 bar -s -o pkgCacheGen::ForceImportant::='foo' +rm -f rootdir/var/cache/apt/*.bin +testsuccessequal 'Reading package lists... +Building dependency tree... +Calculating upgrade... +0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.' apt full-upgrade -s -o pkgCacheGen::ForceImportant::='foo2' -- 2.45.2