diff options
Diffstat (limited to 'apt-pkg/algorithms.cc')
| -rw-r--r-- | apt-pkg/algorithms.cc | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc index d841d6dd8..24a41b70a 100644 --- a/apt-pkg/algorithms.cc +++ b/apt-pkg/algorithms.cc @@ -1574,30 +1574,37 @@ std::string GetProtectedKernelsRegex(pkgCache *cache, bool ReturnRemove) if (version2unames.size() == 0) return ""; - auto latest = version2unames.rbegin(); - auto previous = latest; - ++previous; - + auto versions = version2unames.rbegin(); std::set<std::string> keep; + auto keepKernels = (unsigned long)_config->FindI("APT::NeverAutoRemove::KernelCount", 2); + if (keepKernels < 2) + keepKernels = 2; + + if (Debug) + std::clog << "Amount of kernels to keep " << keepKernels << std::endl; + if (not bootedVersion.empty()) { if (Debug) std::clog << "Keeping booted kernel " << bootedVersion << std::endl; keep.insert(bootedVersion); } - if (latest != version2unames.rend()) - { - if (Debug) - std::clog << "Keeping latest kernel " << latest->first << std::endl; - keep.insert(latest->first); - } - if (keep.size() < 2 && previous != version2unames.rend()) + + while (keep.size() < keepKernels && versions != version2unames.rend()) { + auto v = versions->first; + if (v == bootedVersion) + { + versions++; + continue; + } if (Debug) - std::clog << "Keeping previous kernel " << previous->first << std::endl; - keep.insert(previous->first); + std::clog << "Keeping previous kernel " << v << std::endl; + keep.insert(v); + versions++; } + // Escape special characters '.' and '+' in version strings so we can build a regular expression auto escapeSpecial = [](std::string input) -> std::string { for (size_t pos = 0; (pos = input.find_first_of(".+", pos)) != input.npos; pos += 2) { |