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[PATCH v2 3/9] ref_transaction_update(): die on disallowed flags

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
Nov 5, 2017, 08:42 UTC
Message-ID
<10901328af1e6e04e8c7c7b39977ec85f6c58142.1509870243.git.mhagger@alum.mit.edu>
In-Reply-To
<cover.1509870243.git.mhagger@alum.mit.edu>

Callers shouldn't be passing disallowed flags into `ref_transaction_update()`. So instead of masking them off, treat it as a bug if any are set.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/refs.c b/refs.c
index 62a7621025..7c1e206e08 100644
--- a/refs.c
+++ b/refs.c
@@ -940,7 +940,8 @@ int ref_transaction_update(struct ref_transaction *transaction,
 		return -1;
 	}
 
-	flags &= REF_TRANSACTION_UPDATE_ALLOWED_FLAGS;
+	if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS)
+		BUG("illegal flags 0x%x passed to ref_transaction_update()", flags);
 
 	flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0);
 
-- 
2.14.1
Previous: Michael HaggertyNext: Martin Ågren
Message 9 of 12 in “Tidy up the constants related to ref_update::flags”
  1. 0/9 Tidy up the constants related to ref_update::flagsMichael Haggerty, Nov 5, 2017
  2. 1/9 files_transaction_prepare(): don't leak flags to packed transactionMichael Haggerty, Nov 5, 2017
  3. 7/9 refs: rename constant `REF_ISPRUNING` to `REF_IS_PRUNING`Michael Haggerty, Nov 5, 2017
  4. 8/9 write_packed_entry(): take `object_id` argumentsMichael Haggerty, Nov 5, 2017
  5. 9/9 refs: update some more docs to use "oid" rather than "sha1"Michael Haggerty, Nov 5, 2017
  6. 5/9 refs: tidy up and adjust visibility of the `ref_update` flagsMichael Haggerty, Nov 5, 2017
  7. 6/9 refs: rename constant `REF_NODEREF` to `REF_NO_DEREF`Michael Haggerty, Nov 5, 2017
  8. 2/9 prune_ref(): call `ref_transaction_add_update()` directlyMichael Haggerty, Nov 5, 2017
  9. 3/9 ref_transaction_update(): die on disallowed flagsMichael Haggerty, Nov 5, 2017
  10. Martin ÅgrenNov 7, 2017
  11. Thomas GummererNov 7, 2017
  12. 4/9 ref_transaction_add_update(): remove a checkMichael Haggerty, Nov 5, 2017

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