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[PATCH 2/5] commit_ref_update(): new function, extracted from write_ref_sha1()

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
Apr 24, 2015, 11:35 UTC
Message-ID
<1429875349-29736-3-git-send-email-mhagger@alum.mit.edu>
In-Reply-To
<1429875349-29736-1-git-send-email-mhagger@alum.mit.edu>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)
diff --git a/refs.c b/refs.c
index 72dae21..9b68aec 100644
--- a/refs.c
+++ b/refs.c
@@ -3052,16 +3052,9 @@ static int write_ref_to_lockfile(struct ref_lock *lock, const unsigned char *sha
 	return 0;
 }
 
-/*
- * Write sha1 into the ref specified by the lock. Make sure that errno
- * is sane on error.
- */
-static int write_ref_sha1(struct ref_lock *lock,
-	const unsigned char *sha1, const char *logmsg)
+static int commit_ref_update(struct ref_lock *lock,
+			     const unsigned char *sha1, const char *logmsg)
 {
-	if (write_ref_to_lockfile(lock, sha1))
-		return -1;
-
 	clear_loose_ref_cache(&ref_cache);
 	if (log_ref_write(lock->ref_name, lock->old_sha1, sha1, logmsg) < 0 ||
 	    (strcmp(lock->ref_name, lock->orig_ref_name) &&
@@ -3100,6 +3093,21 @@ static int write_ref_sha1(struct ref_lock *lock,
 	return 0;
 }
 
+/*
+ * Write sha1 as the new value of the reference specified by the
+ * (open) lock. On error, roll back the lockfile and set errno
+ * appropriately.
+ */
+static int write_ref_sha1(struct ref_lock *lock,
+	const unsigned char *sha1, const char *logmsg)
+{
+	if (write_ref_to_lockfile(lock, sha1) ||
+	    commit_ref_update(lock, sha1, logmsg))
+		return -1;
+
+	return 0;
+}
+
 int create_symref(const char *ref_target, const char *refs_heads_master,
 		  const char *logmsg)
 {
-- 
2.1.4
Previous: Michael HaggertyNext: Michael Haggerty
Message 3 of 19 in “Avoid file descriptor exhaustion in ref_transaction_commit()”
  1. 0/5 Avoid file descriptor exhaustion in ref_transaction_commit()Michael Haggerty, Apr 24, 2015
  2. 1/5 write_ref_to_lockfile(): new function, extracted from write_ref_sha1()Michael Haggerty, Apr 24, 2015
  3. 2/5 commit_ref_update(): new function, extracted from write_ref_sha1()Michael Haggerty, Apr 24, 2015
  4. 3/5 write_ref_sha1(): inline function at callersMichael Haggerty, Apr 24, 2015
  5. 4/5 ref_transaction_commit(): remove the local flags variablesMichael Haggerty, Apr 24, 2015
  6. Jeff KingApr 24, 2015
  7. Michael HaggertyApr 24, 2015
  8. Jeff KingApr 24, 2015
  9. Eric SunshineApr 24, 2015
  10. Michael HaggertyApr 24, 2015
  11. 5/5 ref_transaction_commit(): only keep one lockfile open at a timeMichael Haggerty, Apr 24, 2015
  12. Michael HaggertyApr 25, 2015
  13. Junio C HamanoApr 25, 2015
  14. Junio C HamanoApr 25, 2015
  15. Jeff KingApr 28, 2015
  16. Jeff KingApr 24, 2015
  17. Stefan BellerApr 24, 2015
  18. Junio C HamanoApr 25, 2015
  19. Junio C HamanoApr 25, 2015

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