1 files changed, 126 insertions, 0 deletions
diff --git a/bin/get_preserved_libs b/bin/get_preserved_libs
new file mode 100755
index 0000000..6f66cb9
--- /dev/null
+++ b/bin/get_preserved_libs
@@ -0,0 +1,126 @@
+#!/usr/bin/python
+
+import sys
+
+from _emerge.actions import load_emerge_config
+import portage.dep
+
+settings, trees, mtimedb = load_emerge_config()
+vardb = trees[settings["ROOT"]]["vartree"].dbapi
+
+linkmap = vardb._linkmap
+reg = vardb._plib_registry
+
+reg.lock()
+try:
+    plibdata = reg.getPreservedLibs()
+
+    if plibdata:
+        sys.stdout.write("# list of bumped libraries:\n")
+
+    for cpv, paths in plibdata.items():
+        sys.stdout.write("%s\n" % (cpv,))
+        for path in sorted(paths):
+            sys.stderr.write("  %s\n" % (path,))
+
+    if plibdata:
+        sys.stdout.write("# list of inverse deps:\n")
+
+    # taken from display_preserved_libs.py, Portage
+    linkmap.rebuild()  # can raise CommandNotFound
+    consumer_map = {}
+    search_for_owners = set()
+    for cpv in plibdata:
+        internal_plib_keys = set(linkmap._obj_key(f) for f in plibdata[cpv])
+        for f in plibdata[cpv]:
+            if f in consumer_map:
+                continue
+
+            consumers = []
+            for c in linkmap.findConsumers(f):
+                # Filter out any consumers that are also preserved libs
+                # belonging to the same package as the provider.
+                if linkmap._obj_key(c) not in internal_plib_keys:
+                    consumers.append(c)
+                consumers.sort()
+                consumer_map[f] = consumers
+                search_for_owners.update(consumers)
+
+    owners = {}
+    for f in search_for_owners:
+        owner_set = set()
+        for owner in linkmap.getOwners(f):
+            owner_dblink = vardb._dblink(owner)
+            if owner_dblink.exists():
+                owner_set.add(owner_dblink)
+            if owner_set:
+                owners[f] = owner_set
+
+    all_preserved = set()
+    all_preserved.update(*plibdata.values())
+    owners_map = {}
+
+    for cpv in plibdata:
+        sys.stdout.write("%s\n" % (cpv,))
+        samefile_map = {}
+        for f in plibdata[cpv]:
+            obj_key = linkmap._obj_key(f)
+            alt_paths = samefile_map.get(obj_key)
+            if alt_paths is None:
+                alt_paths = set()
+                samefile_map[obj_key] = alt_paths
+            alt_paths.add(f)
+
+        for alt_paths in samefile_map.values():
+            alt_paths = sorted(alt_paths)
+            for p in alt_paths:
+                sys.stderr.write("  - %s" % (p,))
+            f = alt_paths[0]
+            consumers = consumer_map.get(f, [])
+
+            consumers_non_preserved = [c for c in consumers
+                                       if c not in all_preserved]
+            if consumers_non_preserved:
+                # Filter the consumers that are preserved libraries, since
+                # they don't need to be rebuilt (see bug #461908).
+                consumers = consumers_non_preserved
+
+            for c in consumers:
+                owner_pkgs = []
+                if c in all_preserved:
+                    # The owner is displayed elsewhere due to having
+                    # its libs preserved, so distinguish this special
+                    # case (see bug #461908).
+                    owners_desc = "preserved"
+                else:
+                    owner_cpvs = [x.mycpv for x in owners.get(c, [])]
+                    owner_pkgs.extend(owner_cpvs)
+                    owners_desc = ", ".join(owner_cpvs)
+
+                sys.stderr.write("  used by %s (%s)\n" % (c, owners_desc))
+
+                for owner_pkg in owner_pkgs:
+                    cp_slot = "%s:%s" % (
+                        portage.dep.dep_getkey("=" + owner_pkg),
+                        vardb.aux_get(owner_pkg, ["SLOT"])[0]
+                        )
+                    obj = owners_map.setdefault(cp_slot, set())
+                    obj.add(c)
+
+        sys.stdout.flush()
+        sys.stderr.flush()
+
+    if owners_map:
+        sys.stdout.write("# grouped list of rebuilds:\n")
+
+    for owner_pkg in sorted(owners_map.keys()):
+        owner_files = sorted(owners_map[owner_pkg])
+        sys.stdout.write("%s\n" % (owner_pkg,))
+        for owner_file in owner_files:
+            sys.stderr.write("  %s\n" % (owner_file,))
+
+    sys.stdout.flush()
+    sys.stderr.flush()
+
+finally:
+    reg.unlock()