1 files changed, 15 insertions, 12 deletions
diff --git a/nix/libstore/local-store.cc b/nix/libstore/local-store.cc
index 00effa0793..64ed41cc86 100644
--- a/nix/libstore/local-store.cc
+++ b/nix/libstore/local-store.cc
@@ -251,25 +251,28 @@ LocalStore::LocalStore(bool reserveSpace)
        multi-user install. */
     if (getuid() == 0 && settings.buildUsersGroup != "") {
 
+        mode_t perm = 01737;
+
         Path perUserDir = profilesDir + "/per-user";
         createDirs(perUserDir);
-        if (chmod(perUserDir.c_str(), 01777) == -1)
-            throw SysError(format("could not set permissions on `%1%' to 1777") % perUserDir);
+        if (chmod(perUserDir.c_str(), perm) == -1)
+            throw SysError(format("could not set permissions on '%1%' to 1737") % perUserDir);
 
         struct group * gr = getgrnam(settings.buildUsersGroup.c_str());
         if (!gr)
             throw Error(format("the group `%1%' specified in `build-users-group' does not exist")
                 % settings.buildUsersGroup);
-
-        struct stat st;
-        if (stat(settings.nixStore.c_str(), &st))
-            throw SysError(format("getting attributes of path `%1%'") % settings.nixStore);
-
-        if (st.st_uid != 0 || st.st_gid != gr->gr_gid || (st.st_mode & ~S_IFMT) != 01775) {
-            if (chown(settings.nixStore.c_str(), 0, gr->gr_gid) == -1)
-                throw SysError(format("changing ownership of path `%1%'") % settings.nixStore);
-            if (chmod(settings.nixStore.c_str(), 01775) == -1)
-                throw SysError(format("changing permissions on path `%1%'") % settings.nixStore);
+        else {
+            struct stat st;
+            if (stat(settings.nixStore.c_str(), &st))
+                throw SysError(format("getting attributes of path '%1%'") % settings.nixStore);
+
+            if (st.st_uid != 0 || st.st_gid != gr->gr_gid || (st.st_mode & ~S_IFMT) != perm) {
+                if (chown(settings.nixStore.c_str(), 0, gr->gr_gid) == -1)
+                    throw SysError(format("changing ownership of path '%1%'") % settings.nixStore);
+                if (chmod(settings.nixStore.c_str(), perm) == -1)
+                    throw SysError(format("changing permissions on path '%1%'") % settings.nixStore);
+            }
         }
     }