diff options
author | Matthew O'Gorman <mog@rldn.net> | 2016-01-07T01·15-0500 |
---|---|---|
committer | Matthew O'Gorman <mog@rldn.net> | 2018-03-02T02·47-0500 |
commit | 429154b74c7f4b4d679ae79bbc939049f537bfaf (patch) | |
tree | 8f393c37c7138cf16a23c2e364b9f5f0bcd765a1 /src | |
parent | 4a000cbb39766812fccebfa7cf8b76ecca8f6e63 (diff) |
Implement --delete-generations + flag for keeping last N number of generations
Diffstat (limited to 'src')
-rw-r--r-- | src/libstore/profiles.cc | 23 | ||||
-rw-r--r-- | src/libstore/profiles.hh | 2 | ||||
-rw-r--r-- | src/nix-env/nix-env.cc | 2 |
3 files changed, 27 insertions, 0 deletions
diff --git a/src/libstore/profiles.cc b/src/libstore/profiles.cc index 4a607b584506..e6300cf05552 100644 --- a/src/libstore/profiles.cc +++ b/src/libstore/profiles.cc @@ -157,6 +157,29 @@ void deleteGenerations(const Path & profile, const std::set<unsigned int> & gens } } +void deleteGenerationsGreaterThan(const Path & profile, const string & max, bool dryRun) +{ + int max_keep = 0; + PathLocks lock; + if(max.size() < 2) + throw Error(format("invalid number of generations ‘%1%’") % max); + string str_max = string(max, 1, max.size()); + if (!string2Int(str_max, max_keep) || max_keep == 0) + throw Error(format("invalid number of generations to keep ‘%1%’") % max); + + lockProfile(lock, profile); + + int curGen; + Generations gens = findGenerations(profile, curGen); + + for (auto i = gens.rbegin(); i != gens.rend(); ++i) { + if (max_keep) { + max_keep--; + continue; + } + deleteGeneration2(profile, i->number, dryRun); + } +} void deleteOldGenerations(const Path & profile, bool dryRun) { diff --git a/src/libstore/profiles.hh b/src/libstore/profiles.hh index 1d4e6d3037db..3cad08dc5265 100644 --- a/src/libstore/profiles.hh +++ b/src/libstore/profiles.hh @@ -39,6 +39,8 @@ void deleteGeneration(const Path & profile, unsigned int gen); void deleteGenerations(const Path & profile, const std::set<unsigned int> & gensToDelete, bool dryRun); +void deleteGenerationsGreaterThan(const Path & profile, const string & max, bool dryRun); + void deleteOldGenerations(const Path & profile, bool dryRun); void deleteGenerationsOlderThan(const Path & profile, time_t t, bool dryRun); diff --git a/src/nix-env/nix-env.cc b/src/nix-env/nix-env.cc index 97e66cbd937e..1440b7744fd6 100644 --- a/src/nix-env/nix-env.cc +++ b/src/nix-env/nix-env.cc @@ -1284,6 +1284,8 @@ static void opDeleteGenerations(Globals & globals, Strings opFlags, Strings opAr deleteOldGenerations(globals.profile, globals.dryRun); } else if (opArgs.size() == 1 && opArgs.front().find('d') != string::npos) { deleteGenerationsOlderThan(globals.profile, opArgs.front(), globals.dryRun); + } else if (opArgs.size() == 1 && opArgs.front().find('+') != string::npos) { + deleteGenerationsGreaterThan(globals.profile, opArgs.front(), globals.dryRun); } else { std::set<unsigned int> gens; for (auto & i : opArgs) { |