[PATCH v5 15/27] refs: allow log-only updates
From: David Turner <hidden>
Date: 2016-06-15 23:08:17
Subsystem:
the rest · Maintainer:
Linus Torvalds
The refs infrastructure learns about log-only ref updates, which only update the reflog. Later, we will use this to separate symbolic reference resolution from ref updating. Signed-off-by: David Turner <redacted> --- refs/files-backend.c | 15 ++++++++++----- refs/refs-internal.h | 7 +++++++ 2 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index da06408..592d0ff 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c@@ -2767,7 +2767,7 @@ static int commit_ref_update(struct ref_lock *lock, } } } - if (commit_ref(lock)) { + if (!(flags & REF_LOG_ONLY) && commit_ref(lock)) { error("Couldn't set %s", lock->ref_name); unlock_ref(lock); return -1;
@@ -3121,7 +3121,8 @@ static int files_transaction_commit(struct ref_transaction *transaction, goto cleanup; } if ((update->flags & REF_HAVE_NEW) && - !(update->flags & REF_DELETING)) { + !(update->flags & REF_DELETING) && + !(update->flags & REF_LOG_ONLY)) { int overwriting_symref = ((update->type & REF_ISSYMREF) && (update->flags & REF_NODEREF));
@@ -3151,7 +3152,9 @@ static int files_transaction_commit(struct ref_transaction *transaction, update->flags |= REF_NEEDS_COMMIT; } } - if (!(update->flags & REF_NEEDS_COMMIT)) { + + if (!(update->flags & REF_LOG_ONLY) && + !(update->flags & REF_NEEDS_COMMIT)) { /* * We didn't have to write anything to the lockfile. * Close it to free up the file descriptor:
@@ -3168,7 +3171,8 @@ static int files_transaction_commit(struct ref_transaction *transaction, for (i = 0; i < n; i++) { struct ref_update *update = updates[i]; - if (update->flags & REF_NEEDS_COMMIT) { + if (update->flags & REF_NEEDS_COMMIT || + update->flags & REF_LOG_ONLY) { if (commit_ref_update(update->backend_data, update->new_sha1, update->msg, update->flags, err)) {
@@ -3188,7 +3192,8 @@ static int files_transaction_commit(struct ref_transaction *transaction, struct ref_update *update = updates[i]; struct ref_lock *lock = update->backend_data; - if (update->flags & REF_DELETING) { + if (update->flags & REF_DELETING && + !(update->flags & REF_LOG_ONLY)) { if (delete_ref_loose(lock, update->type, err)) { ret = TRANSACTION_GENERIC_ERROR; goto cleanup;
diff --git a/refs/refs-internal.h b/refs/refs-internal.h
index efdde82..283f71f 100644
--- a/refs/refs-internal.h
+++ b/refs/refs-internal.h@@ -43,6 +43,13 @@ */ /* + * Used as a flag in ref_update::flags when we want to log a ref + * update but not actually perform it. This is used when a symbolic + * ref update is split up. + */ +#define REF_LOG_ONLY 0x80 + +/* * Return true iff refname is minimally safe. "Safe" here means that * deleting a loose reference by this name will not do any damage, for * example by causing a file that is not a reference to be deleted.
--
2.4.2.767.g62658d5-twtrsrc