commit 020ed65a12838bdead64bc3c5de249d3c8f5cfd8 upstream.
When performing a reflog transaction update, only write to the reflog iff
msg is non-NULL. This can then be combined with REFLOG_TRUNCATE to perform
an update that only truncates but does not write.
Change-Id: I44c89caa7e7c4960777b79cfb5d339a5aa3ddf7a
Signed-off-by: Ronnie Sahlberg <sahlb...@google.com>
Signed-off-by: Jonathan Nieder <jrnie...@gmail.com>
---
refs.c | 5 +++--
refs.h | 1 +
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/refs.c b/refs.c
index d54c3b9..f14b76e 100644
--- a/refs.c
+++ b/refs.c
@@ -3895,8 +3895,9 @@ int transaction_commit(struct transaction *transaction,
update->reflog_fd = -1;
continue;
}
- if (log_ref_write_fd(update->reflog_fd, update->old_sha1,
- update->new_sha1,
+ if (update->msg &&
+ log_ref_write_fd(update->reflog_fd,
+ update->old_sha1, update->new_sha1,
update->committer, update->msg)) {
error("Could write to reflog: %s. %s",
update->refname, strerror(errno));
diff --git a/refs.h b/refs.h
index 5075073..bf96b36 100644
--- a/refs.h
+++ b/refs.h
@@ -337,6 +337,7 @@ int transaction_delete_ref(struct transaction *transaction,
/*
* Append a reflog entry for refname. If the REFLOG_TRUNCATE flag is set
* this update will first truncate the reflog before writing the entry.
+ * If msg is NULL no update will be written to the log.
*/
int transaction_update_reflog(struct transaction *transaction,
const char *refname,
--
2.1.0.rc2.206.gedb03e5
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