Make readDirectory() return inode / file type

2 files changed, 15 insertions, 19 deletions

diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index 2e2e8507b8b3..df6f26c776c5 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -230,11 +230,11 @@ static void readTempRoots(PathSet & tempRoots, FDs & fds)
 {
     /* Read the `temproots' directory for per-process temporary root
        files. */
-    Strings tempRootFiles = readDirectory(
+    DirEntries tempRootFiles = readDirectory(
         (format("%1%/%2%") % settings.nixStateDir % tempRootsDir).str());
 
-    foreach (Strings::iterator, i, tempRootFiles) {
-        Path path = (format("%1%/%2%/%3%") % settings.nixStateDir % tempRootsDir % *i).str();
+    for (auto & i : tempRootFiles) {
+        Path path = (format("%1%/%2%/%3%") % settings.nixStateDir % tempRootsDir % i.name).str();
 
         debug(format("reading temporary root file `%1%'") % path);
         FDPtr fd(new AutoCloseFD(open(path.c_str(), O_RDWR, 0666)));
@@ -301,9 +301,8 @@ static void findRoots(StoreAPI & store, const Path & path, Roots & roots)
         struct stat st = lstat(path);
 
         if (S_ISDIR(st.st_mode)) {
-            Strings names = readDirectory(path);
-            foreach (Strings::iterator, i, names)
-                findRoots(store, path + "/" + *i, roots);
+            for (auto & i : readDirectory(path))
+                findRoots(store, path + "/" + i.name, roots);
         }
 
         else if (S_ISLNK(st.st_mode)) {
@@ -455,7 +454,6 @@ void LocalStore::deletePathRecursive(GCState & state, const Path & path)
         // if the path was not valid, need to determine the actual
         // size.
         state.bytesInvalidated += size;
-        // Mac OS X cannot rename directories if they are read-only.
         if (chmod(path.c_str(), st.st_mode | S_IWUSR) == -1)
             throw SysError(format("making `%1%' writable") % path);
         Path tmp = state.trashDir + "/" + baseNameOf(path);
@@ -655,7 +653,7 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
 
     /* After this point the set of roots or temporary roots cannot
        increase, since we hold locks on everything.  So everything
-       that is not reachable from `roots'. */
+       that is not reachable from `roots' is garbage. */
 
     if (state.shouldDelete) {
         if (pathExists(state.trashDir)) deleteGarbage(state, state.trashDir);
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 7d78ab7ecfa0..c6357697c509 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -593,9 +593,9 @@ static void canonicalisePathMetaData_(const Path & path, uid_t fromUid, InodesSe
     }
 
     if (S_ISDIR(st.st_mode)) {
-        Strings names = readDirectory(path);
-        foreach (Strings::iterator, i, names)
-            canonicalisePathMetaData_(path + "/" + *i, fromUid, inodesSeen);
+        DirEntries entries = readDirectory(path);
+        for (auto & i : entries)
+            canonicalisePathMetaData_(path + "/" + i.name, fromUid, inodesSeen);
     }
 }
 
@@ -1730,8 +1730,8 @@ bool LocalStore::verifyStore(bool checkContents, bool repair)
     /* Acquire the global GC lock to prevent a garbage collection. */
     AutoCloseFD fdGCLock = openGCLock(ltWrite);
 
-    Paths entries = readDirectory(settings.nixStore);
-    PathSet store(entries.begin(), entries.end());
+    PathSet store;
+    for (auto & i : readDirectory(settings.nixStore)) store.insert(i.name);
 
     /* Check whether all valid paths actually exist. */
     printMsg(lvlInfo, "checking path existence...");
@@ -1881,9 +1881,8 @@ void LocalStore::markContentsGood(const Path & path)
 PathSet LocalStore::queryValidPathsOld()
 {
     PathSet paths;
-    Strings entries = readDirectory(settings.nixDBPath + "/info");
-    foreach (Strings::iterator, i, entries)
-        if (i->at(0) != '.') paths.insert(settings.nixStore + "/" + *i);
+    for (auto & i : readDirectory(settings.nixDBPath + "/info"))
+        if (i.name.at(0) != '.') paths.insert(settings.nixStore + "/" + i.name);
     return paths;
 }
 
@@ -1970,9 +1969,8 @@ static void makeMutable(const Path & path)
     if (!S_ISDIR(st.st_mode) && !S_ISREG(st.st_mode)) return;
 
     if (S_ISDIR(st.st_mode)) {
-        Strings names = readDirectory(path);
-        foreach (Strings::iterator, i, names)
-            makeMutable(path + "/" + *i);
+        for (auto & i : readDirectory(path))
+            makeMutable(path + "/" + i.name);
     }
 
     /* The O_NOFOLLOW is important to prevent us from changing the