diff options
Diffstat (limited to 'src/libstore')
| -rw-r--r-- | src/libstore/build.hh | 7 | ||||
| -rw-r--r-- | src/libstore/misc.cc | 9 |
2 files changed, 11 insertions, 5 deletions
diff --git a/src/libstore/build.hh b/src/libstore/build.hh index ed83d678e..52e7c9b9d 100644 --- a/src/libstore/build.hh +++ b/src/libstore/build.hh @@ -21,9 +21,12 @@ Derivation derivationFromPath(const Path & drvPath); /* Place in `paths' the set of all store paths in the file system closure of `storePath'; that is, all paths than can be directly or - indirectly reached from it. `paths' is not cleared. */ + indirectly reached from it. `paths' is not cleared. If + `flipDirection' is true, the set of paths that can reach + `storePath' is returned; that is, the closures under the `referers' + relation instead of the `references' relation is returned. */ void computeFSClosure(const Path & storePath, - PathSet & paths); + PathSet & paths, bool flipDirection = false); /* Place in `paths' the set of paths that are required to `realise' the given store path, i.e., all paths necessary for valid diff --git a/src/libstore/misc.cc b/src/libstore/misc.cc index dbb9273f7..802e57651 100644 --- a/src/libstore/misc.cc +++ b/src/libstore/misc.cc @@ -12,17 +12,20 @@ Derivation derivationFromPath(const Path & drvPath) void computeFSClosure(const Path & storePath, - PathSet & paths) + PathSet & paths, bool flipDirection) { if (paths.find(storePath) != paths.end()) return; paths.insert(storePath); PathSet references; - queryReferences(storePath, references); + if (flipDirection) + queryReferers(storePath, references); + else + queryReferences(storePath, references); for (PathSet::iterator i = references.begin(); i != references.end(); ++i) - computeFSClosure(*i, paths); + computeFSClosure(*i, paths, flipDirection); } |