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[PATCH v3 15/16] refs.c: make lock_packed_refs take an err argument

From
Ronnie Sahlberg <sahlberg@google.com>
Date
Nov 7, 2014, 19:39 UTC
Message-ID
<1415389145-6391-16-git-send-email-sahlberg@google.com>
In-Reply-To
<1415389145-6391-1-git-send-email-sahlberg@google.com>
Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
---
 refs.c | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/refs.c b/refs.c
index 0829c55..1314a9a 100644
--- a/refs.c
+++ b/refs.c
@@ -2398,13 +2398,17 @@ static int write_packed_entry_fn(struct ref_entry *entry, void *cb_data)
 	return 0;
 }
 
-/* This should return a meaningful errno on failure */
-static int lock_packed_refs(int flags)
+static int lock_packed_refs(struct strbuf *err)
 {
 	struct packed_ref_cache *packed_ref_cache;
 
-	if (hold_lock_file_for_update(&packlock, git_path("packed-refs"), flags) < 0)
+	if (hold_lock_file_for_update(&packlock, git_path("packed-refs"),
+				      0) < 0) {
+		if (err)
+			unable_to_lock_message(git_path("packed-refs"),
+					       errno, err);
 		return -1;
+	}
 	/*
 	 * Get the current packed-refs while holding the lock.  If the
 	 * packed-refs file has been modified since we last read it,
@@ -2592,11 +2596,14 @@ static void prune_refs(struct ref_to_prune *r)
 int pack_refs(unsigned int flags)
 {
 	struct pack_refs_cb_data cbdata;
+	struct strbuf err = STRBUF_INIT;
 
 	memset(&cbdata, 0, sizeof(cbdata));
 	cbdata.flags = flags;
 
-	lock_packed_refs(LOCK_DIE_ON_ERROR);
+	if (lock_packed_refs(&err))
+		die("%s", err.buf);
+
 	cbdata.packed_refs = get_packed_refs(&ref_cache);
 
 	do_for_each_entry_in_dir(get_loose_refs(&ref_cache), 0,
@@ -3789,10 +3796,7 @@ int transaction_commit(struct transaction *transaction,
 	}
 
 	/* Lock packed refs during commit */
-	if (lock_packed_refs(0)) {
-		if (err)
-			unable_to_lock_message(git_path("packed-refs"),
-					       errno, err);
+	if (lock_packed_refs(err)) {
 		ret = -1;
 		goto cleanup;
 	}
@@ -3847,10 +3851,7 @@ int transaction_commit(struct transaction *transaction,
 			goto cleanup;
 		}
 		/* lock the packed refs again so no one can change it */
-		if (lock_packed_refs(0)) {
-			if (err)
-				unable_to_lock_message(git_path("packed-refs"),
-						       errno, err);
+		if (lock_packed_refs(err)) {
 			ret = -1;
 			goto cleanup;
 		}
-- 
2.1.0.rc2.206.gedb03e5
Previous: Ronnie SahlbergNext: Ronnie Sahlberg
Message 16 of 17 in “ref-transaction-rename”
  1. 00/16 ref-transaction-renameRonnie Sahlberg, Nov 7, 2014
  2. 01/16 refs.c: allow passing raw git_committer_info as email to _update_reflogRonnie Sahlberg, Nov 7, 2014
  3. 02/16 refs.c: return error instead of dying when locking fails during transactionRonnie Sahlberg, Nov 7, 2014
  4. 03/16 refs.c: use packed refs when deleting refs during a transactionRonnie Sahlberg, Nov 7, 2014
  5. 04/16 refs.c: use a stringlist for repack_without_refsRonnie Sahlberg, Nov 7, 2014
  6. 05/16 refs.c: add transaction support for renaming a reflogRonnie Sahlberg, Nov 7, 2014
  7. 06/16 refs.c: update rename_ref to use a transactionRonnie Sahlberg, Nov 7, 2014
  8. 07/16 refs.c: rollback the lockfile before we die() in repack_without_refsRonnie Sahlberg, Nov 7, 2014
  9. 08/16 refs.c: move reflog updates into its own functionRonnie Sahlberg, Nov 7, 2014
  10. 09/16 refs.c: write updates to packed refs when a transaction has more than one refRonnie Sahlberg, Nov 7, 2014
  11. 10/16 remote.c: use a transaction for deleting refsRonnie Sahlberg, Nov 7, 2014
  12. 11/16 refs.c: make repack_without_refs staticRonnie Sahlberg, Nov 7, 2014
  13. 12/16 refs.c: make the *_packed_refs functions staticRonnie Sahlberg, Nov 7, 2014
  14. 13/16 refs.c: replace the onerr argument in update_ref with a strbuf errRonnie Sahlberg, Nov 7, 2014
  15. 14/16 refs.c: make add_packed_ref return an error instead of calling dieRonnie Sahlberg, Nov 7, 2014
  16. 15/16 refs.c: make lock_packed_refs take an err argumentRonnie Sahlberg, Nov 7, 2014
  17. 16/16 refs.c: add an err argument to pack_refsRonnie Sahlberg, Nov 7, 2014

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