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authorEelco Dolstra <e.dolstra@tudelft.nl>2005-12-23T21·36+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2005-12-23T21·36+0000
commitf96d2dea266760e5587356e72d1cadaace5f7d5b (patch)
treeb335134787eb543588df53453bd19fdc1d080c84 /src/libstore/gc.cc
parent4b9e7f59ca14c3de7b0cfdaebca98fa2639bbbf9 (diff)
* Added a flag `--ignore-liveness' to `nix-store --delete'. It
  deletes a path even if it is reachable from a root.  However, it
  won't delete a path that still has referrers (since that would
  violate store invariants).

  Don't try this at home.  It's a useful hack for recovering from
  certain situations in a somewhat clean way (e.g., holes in closures
  due to disk corruption).

Diffstat (limited to 'src/libstore/gc.cc')
-rw-r--r--src/libstore/gc.cc5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index c02f59f2cca6..5f4f5b27ff79 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -304,7 +304,7 @@ static Paths topoSort(const PathSet & paths)
 
 
 void collectGarbage(GCAction action, const PathSet & pathsToDelete,
-    PathSet & result, unsigned long long & bytesFreed)
+    bool ignoreLiveness, PathSet & result, unsigned long long & bytesFreed)
 {
     result.clear();
     bytesFreed = 0;
@@ -323,7 +323,8 @@ void collectGarbage(GCAction action, const PathSet & pathsToDelete,
        permanent roots cannot increase now. */
     Path rootsDir = canonPath((format("%1%/%2%") % nixStateDir % gcRootsDir).str());
     PathSet roots;
-    findRoots(rootsDir, true, roots);
+    if (!ignoreLiveness)
+        findRoots(rootsDir, true, roots);
 
     if (action == gcReturnRoots) {
         result = roots;