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| author | David Turner <dturner@twopensource.com> | 2016-02-24 22:58:50 (GMT) |
|---|---|---|
| committer | Michael Haggerty <mhagger@alum.mit.edu> | 2016-06-13 09:23:49 (GMT) |
| commit | d99aa884dff33d48d5aab8c9cf989a25c779fd70 (patch) | |
| tree | 9ae35d12fba5766557c1f6c39961809083bcb78d /refs | |
| parent | 8bb0455367a17bd7428e02f835e3f55c8cd168da (diff) | |
| download | git-d99aa884dff33d48d5aab8c9cf989a25c779fd70.zip git-d99aa884dff33d48d5aab8c9cf989a25c779fd70.tar.gz git-d99aa884dff33d48d5aab8c9cf989a25c779fd70.tar.bz2 | |
refs: allow log-only updates
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 <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Diffstat (limited to 'refs')
| -rw-r--r-- | refs/files-backend.c | 16 | ||||
| -rw-r--r-- | refs/refs-internal.h | 7 |
2 files changed, 17 insertions, 6 deletions
diff --git a/refs/files-backend.c b/refs/files-backend.c index 85e1e1c..2f98eeb 100644 --- a/refs/files-backend.c +++ b/refs/files-backend.c @@ -2683,7 +2683,7 @@ static int commit_ref_update(struct ref_lock *lock, } } } - if (commit_ref(lock)) { + if (!(flags & REF_LOG_ONLY) && commit_ref(lock)) { strbuf_addf(err, "couldn't set '%s'", lock->ref_name); unlock_ref(lock); return -1; @@ -3101,7 +3101,8 @@ int ref_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)); @@ -3133,8 +3134,9 @@ int ref_transaction_commit(struct ref_transaction *transaction, } if (!(update->flags & REF_NEEDS_COMMIT)) { /* - * We didn't have to write anything to the lockfile. - * Close it to free up the file descriptor: + * We didn't call write_ref_to_lockfile(), so + * the lockfile is still open. Close it to + * free up the file descriptor: */ if (close_ref(update->lock)) { strbuf_addf(err, "couldn't close '%s.lock'", @@ -3149,7 +3151,8 @@ int ref_transaction_commit(struct ref_transaction *transaction, for (i = 0; i < transaction->nr; i++) { struct ref_update *update = transaction->updates[i]; - if (update->flags & REF_NEEDS_COMMIT) { + if (update->flags & REF_NEEDS_COMMIT || + update->flags & REF_LOG_ONLY) { if (commit_ref_update(update->lock, update->new_sha1, update->msg, update->flags, err)) { @@ -3168,7 +3171,8 @@ int ref_transaction_commit(struct ref_transaction *transaction, for (i = 0; i < transaction->nr; i++) { struct ref_update *update = transaction->updates[i]; - if (update->flags & REF_DELETING) { + if (update->flags & REF_DELETING && + !(update->flags & REF_LOG_ONLY)) { if (delete_ref_loose(update->lock, update->type, err)) { ret = TRANSACTION_GENERIC_ERROR; goto cleanup; diff --git a/refs/refs-internal.h b/refs/refs-internal.h index 1f94f7a..85f4650 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. |