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[PATCH v3 02/16] refs.c: return error instead of dying when locking fails during transaction

From
Ronnie Sahlberg <sahlberg@google.com>
Date
Nov 7, 2014, 19:38 UTC
Message-ID
<1415389145-6391-3-git-send-email-sahlberg@google.com>
In-Reply-To
<1415389145-6391-1-git-send-email-sahlberg@google.com>

Change lock_ref_sha1_basic to return an error instead of dying when we fail to lock a file during a transaction. This function is only called from transaction_commit() and it knows how to handle these failures.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 refs.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/refs.c b/refs.c
index 1791166..d4ab65c 100644
--- a/refs.c
+++ b/refs.c
@@ -2340,6 +2340,7 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 
 	lock->lock_fd = hold_lock_file_for_update(lock->lk, ref_file, lflags);
 	if (lock->lock_fd < 0) {
+		last_errno = errno;
 		if (errno == ENOENT && --attempts_remaining > 0)
 			/*
 			 * Maybe somebody just deleted one of the
@@ -2347,8 +2348,13 @@ static struct ref_lock *lock_ref_sha1_basic(const char *refname,
 			 * again:
 			 */
 			goto retry;
-		else
-			unable_to_lock_die(ref_file, errno);
+		else {
+			struct strbuf err = STRBUF_INIT;
+			unable_to_lock_message(ref_file, errno, &err);
+			error("%s", err.buf);
+			strbuf_reset(&err);
+			goto error_return;
+		}
 	}
 	return old_sha1 ? verify_lock(lock, old_sha1, mustexist) : lock;
 
-- 
2.1.0.rc2.206.gedb03e5
Previous: Ronnie SahlbergNext: Ronnie Sahlberg
Message 3 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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