* Subflag in `--verify': `nix-store --verify --check-contents' checks

  that the contents of store paths has not changed by comparing hashes
  of their current contents to the hashes stored in the database.

1 files changed, 11 insertions, 1 deletions

diff --git a/src/nix-store/main.cc b/src/nix-store/main.cc
index a3c1b8fa7..a124543fb 100644
--- a/src/nix-store/main.cc
+++ b/src/nix-store/main.cc
@@ -420,7 +420,17 @@ static void opInit(Strings opFlags, Strings opArgs)
 /* Verify the consistency of the Nix environment. */
 static void opVerify(Strings opFlags, Strings opArgs)
 {
-    verifyStore();
+    if (!opArgs.empty())
+        throw UsageError("no arguments expected");
+
+    bool checkContents = false;
+    
+    for (Strings::iterator i = opFlags.begin();
+         i != opFlags.end(); ++i)
+        if (*i == "--check-contents") checkContents = true;
+        else throw UsageError(format("unknown flag `%1%'") % *i);
+    
+    verifyStore(checkContents);
 }