apt/apt-pkg/pkgcachegen.cc, branch 2.1.16

Add support for Phased-Update-Percentage

2021-01-08T13:48:47Z

This adds support for Phased-Update-Percentage by pinning upgrades that are not to be installed down to 1. The output of policy has been changed to add the level of phasing, and documentation has been improved to document how phased updates work. The patch detects if it is running in a chroot, and if so, always includes phased updates, restoring classic apt behavior to avoid behavioral changes on buildd chroots. Various options are added to control this all: * APT::Get::{Always,Never}-Include-Phased-Updates and their legacy update-manager equivalents to always or never include phased updates * APT::Machine-ID can be set to a UUID string to have all machines in a fleet phase the same * Dir::Etc::Machine-ID is weird in that it's default is sort of like ../machine-id, but not really, as ../machine-id would look up $PWD/../machine-id and not relative to Dir::Etc; but it allows you to override the path to machine-id (as opposed to the value) * Dir::Bin::ischroot is the path to the ischroot(1) binary which is used to detect whether we are running in a chroot.

apt-pkg: default visibility to hidden

2020-02-26T19:34:54Z

Silence narrow conversion warnings, add error checks

2020-02-25T10:27:30Z

When converting a long offset to a uint32_t to be stored in the map, check that this is safe to do. If the offset is negative, or we lose data in the conversion, we lost.

Make map_pointer typesafe

2020-02-24T17:29:07Z

Instead of just using uint32_t, which would allow you to assign e.g. a map_pointer to a map_pointer, use our own smarter struct that has strict type checking. We allow creating a map_pointer from a nullptr, and we allow comparing map_pointer to nullptr, which also deals with comparisons against 0 which are often used, as 0 will be implictly converted to nullptr.

Wrap AllocateInMap with a templated version

2020-02-24T17:09:49Z

Replace map_pointer_t with map_pointer

2020-02-24T16:08:34Z

This is a first step to a type safe cache, adding typing information everywhere. Next, we'll replace map_pointer implementation with a type safe one.

Use a 32-bit djb VersionHash instead of CRC-16

2020-02-18T12:39:26Z

NewGroup: Create GrpIterator after allocation (fix segfault)

2020-01-27T12:23:53Z

NewGroup created a GrpIterator and then called WriteStringInMap() which might remap the cache, causing the iterator to go invalid. Avoid this simply by creating the iterator later on.

NewProvidesAllArch: Check if group is empty before using it

2020-01-16T10:10:47Z

APT 1.9.6 introduced empty groups by making use of groups to deduplicate package names. This is not normally a problem, but here we assumed that every group has at least one package. This caused a problem because automake was providing automake-1.16 while having the source package automake-1.16. So we found the automake-1.16 group, iterated over its empty package list, trying to store the provides (which hence never happened). LP: #1859952

Remove includes of (md5|sha1|sha2).h headers

2020-01-14T12:10:36Z

Remove it everywhere, except where it is still needed.