From patchwork Mon Oct 21 13:37:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bence Ferdinandy X-Patchwork-Id: 13844187 Received: from aib29agh124.zrh1.oracleemaildelivery.com (aib29agh124.zrh1.oracleemaildelivery.com [192.29.178.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A03E1F9410 for ; Mon, 21 Oct 2024 13:44:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.29.178.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729518300; cv=none; b=Oqi5rPEbh9hnP5uEUXsPn8phTz0V0afceLmC8FgXj/fdEAUBtHCmZhnNewTf1CcsB6DvZJqzktXZ/unnr97dOT8IimWK1MbJjAQXIUJfBJ8azCXC2nP/j4YVTDCn107QcZ0Zet8aLsMPwfFP8H/BypiXg2XvXViKpS3vis8xpno= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729518300; c=relaxed/simple; bh=e/y6O7dsmn9zIfqQrzGiyb1BBd+gReVU9OfJfRBOSOg=; h=From:To:Cc:Subject:Date:Message-id:In-reply-to:References: MIME-version; b=YUZZ+DGMlEJNx4FTfIZDqMW8b6hIGpztGHLHtJaQTX8VZNIw3bCZSrllk7PcIL4mgylUBc2FX3o4fQOdjUzngWy9+ey6Vv3P6vvmFTA5hZ0RLIrilyPvB2zKaVlCq/wX7YTdmwDQ18UJLQbugEOVdtV9sRyjfjuozVE6ReCzLvw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=ferdinandy.com; spf=pass smtp.mailfrom=zrh1.rp.oracleemaildelivery.com; dkim=pass (2048-bit key) header.d=zrh1.rp.oracleemaildelivery.com header.i=@zrh1.rp.oracleemaildelivery.com header.b=AkfAaq4T; arc=none smtp.client-ip=192.29.178.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=ferdinandy.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zrh1.rp.oracleemaildelivery.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=zrh1.rp.oracleemaildelivery.com header.i=@zrh1.rp.oracleemaildelivery.com header.b="AkfAaq4T" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; s=prod-zrh-20200406; d=zrh1.rp.oracleemaildelivery.com; h=Date:To:From:Subject:Message-Id:MIME-Version:Sender:List-Unsubscribe:List-Unsubscribe-Post; bh=FkxENzZrwMFFFCC+UcLcU90Gvs9mhacaH37ZT7WGfoM=; b=AkfAaq4TC5p8o/OmD6hBwIQJlH0Tkf2NkXelTk3I9Nm4Y0iGAU+dvd91FtcSOy5a4GqX3LwT9hUG AWqHcrGtoUA7VNJN8ChOdf0eSQyxxYNAbGQREqgdnivdXHKm5PD4+hQaCKgL5SYayGhwmQiDPmkP Maz9viJBYhUkYZba/evi4SqTkNzbhfUSXm/vt88I9l19AfSaX6EFUgpJQ/xbBaRBizrogKTCGoGr 3TVHTGqckMa5dXNW3cPrCFrSQbE+OLdF9jmcJd2AeXluEp9tWfpmnzYFYDuHKrIaeTtCuPjQeQ1q 4i3py1R72f4O0OoIPjYi9y26Sf73dKWzjsn6Vw== Received: by omta-ad1-fd2-401-eu-zurich-1.omtaad1.vcndpzrh.oraclevcn.com (Oracle Communications Messaging Server 8.1.0.1.20240911 64bit (built Sep 11 2024)) with ESMTPS id <0SLP00KT8KUR3U20@omta-ad1-fd2-401-eu-zurich-1.omtaad1.vcndpzrh.oraclevcn.com> for git@vger.kernel.org; Mon, 21 Oct 2024 13:44:51 +0000 (GMT) List-Unsubscribe-Post: List-Unsubscribe=One-Click From: Bence Ferdinandy To: git@vger.kernel.org Cc: =?utf-8?b?RsWRdsOhcm9zaSBWw616bcWxdmVrIFpydC4=?= , Bence Ferdinandy Subject: [PATCH v10 5/8] refs: add TRANSACTION_CREATE_EXISTS error Date: Mon, 21 Oct 2024 15:37:02 +0200 Message-id: <20241021134354.705636-6-bence@ferdinandy.com> In-reply-to: <20241021134354.705636-1-bence@ferdinandy.com> References: <1088915169.629942.1729445083543@FVRT-HAMMYAS-P.vizmuvek.hu> <20241021134354.705636-1-bence@ferdinandy.com> Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-version: 1.0 Content-transfer-encoding: 8bit Reporting-Meta: AAGKQKp0eSHkB/MBfNPQLYFnMiOGBdGLhzF7U4/j75BiK9nU/kpGSfTnKXbeOE3M ++x4+j0FghhrTN7ScZ0U+hHho01Zki0BZtS305QdoK64oHL3IQ8SRGwUtWgMiVba petzUg1mwu0xlEwlIk8mNU5CfsSYr0lZAH8VxCtVz2zYTEE9jewg8VXwSiAtSCx5 iWrrE5/WqtoD4y9L1wKyC65kSr9L4maceUqxCuUXNTC3AWEgjoxqkqGNOVVYQ7RL 29HKKCN/BYsQG4yTJ89+Uoo92BPUghFgeL2xz9tTOkMvkoHk1QF/TNueIF19dE6L 6hgSr7WMaL+zQM/fp3ceQuxRFkwA8QBJFImQbtQhpdndwygJKOiPUGGAqwn14fGF LbAhM9QqGOlnxIlo5UjTJst5VjFTK+s2RFW+yRNFLNlRpIFjAPgvPLrW94vK58N1 9i5Yscw19pXj9DUAIq2QmS0Q5M7n/NA4AdcImzeOM1aZwKmehK5L6HSf Currently there is only one special error for transaction, for when there is a naming conflict, all other errors are dumped under a generic error. Add a new special error case for when the caller requests the reference to be updated only when it does not yet exist and the reference actually does exist. Signed-off-by: Bence Ferdinandy --- Notes: v4: new patch v5: no change v6: no change v7: - change commit prefix to be more in line with project standards - changed error checking to Karthik's suggestion v8: no change v9: - no change v10: no change refs.h | 4 +++- refs/files-backend.c | 24 ++++++++++++++++-------- refs/reftable-backend.c | 6 ++++-- 3 files changed, 23 insertions(+), 11 deletions(-) diff --git a/refs.h b/refs.h index 259191a485..a5bc25442b 100644 --- a/refs.h +++ b/refs.h @@ -762,8 +762,10 @@ int ref_transaction_verify(struct ref_transaction *transaction, /* Naming conflict (for example, the ref names A and A/B conflict). */ #define TRANSACTION_NAME_CONFLICT -1 +/* When only creation was requested, but the ref already exists. */ +#define TRANSACTION_CREATE_EXISTS -2 /* All other errors. */ -#define TRANSACTION_GENERIC_ERROR -2 +#define TRANSACTION_GENERIC_ERROR -3 /* * Perform the preparatory stages of committing `transaction`. Acquire diff --git a/refs/files-backend.c b/refs/files-backend.c index 0824c0b8a9..e743ec44b5 100644 --- a/refs/files-backend.c +++ b/refs/files-backend.c @@ -2502,14 +2502,18 @@ static int split_symref_update(struct ref_update *update, static int check_old_oid(struct ref_update *update, struct object_id *oid, struct strbuf *err) { + int ret = TRANSACTION_GENERIC_ERROR; + if (!(update->flags & REF_HAVE_OLD) || oideq(oid, &update->old_oid)) return 0; - if (is_null_oid(&update->old_oid)) + if (is_null_oid(&update->old_oid)) { strbuf_addf(err, "cannot lock ref '%s': " "reference already exists", ref_update_original_update_refname(update)); + ret = TRANSACTION_CREATE_EXISTS; + } else if (is_null_oid(oid)) strbuf_addf(err, "cannot lock ref '%s': " "reference is missing but expected %s", @@ -2522,7 +2526,7 @@ static int check_old_oid(struct ref_update *update, struct object_id *oid, oid_to_hex(oid), oid_to_hex(&update->old_oid)); - return -1; + return ret; } /* @@ -2602,9 +2606,11 @@ static int lock_ref_for_update(struct files_ref_store *refs, ret = TRANSACTION_GENERIC_ERROR; goto out; } - } else if (check_old_oid(update, &lock->old_oid, err)) { - ret = TRANSACTION_GENERIC_ERROR; - goto out; + } else { + ret = check_old_oid(update, &lock->old_oid, err); + if (ret) { + goto out; + } } } else { /* @@ -2635,9 +2641,11 @@ static int lock_ref_for_update(struct files_ref_store *refs, update->old_target); ret = TRANSACTION_GENERIC_ERROR; goto out; - } else if (check_old_oid(update, &lock->old_oid, err)) { - ret = TRANSACTION_GENERIC_ERROR; - goto out; + } else { + ret = check_old_oid(update, &lock->old_oid, err); + if (ret) { + goto out; + } } /* diff --git a/refs/reftable-backend.c b/refs/reftable-backend.c index 3c6107c7ce..b3b5ce77dd 100644 --- a/refs/reftable-backend.c +++ b/refs/reftable-backend.c @@ -1206,10 +1206,13 @@ static int reftable_be_transaction_prepare(struct ref_store *ref_store, goto done; } } else if ((u->flags & REF_HAVE_OLD) && !oideq(¤t_oid, &u->old_oid)) { - if (is_null_oid(&u->old_oid)) + ret = TRANSACTION_NAME_CONFLICT; + if (is_null_oid(&u->old_oid)) { strbuf_addf(err, _("cannot lock ref '%s': " "reference already exists"), ref_update_original_update_refname(u)); + ret = TRANSACTION_CREATE_EXISTS; + } else if (is_null_oid(¤t_oid)) strbuf_addf(err, _("cannot lock ref '%s': " "reference is missing but expected %s"), @@ -1221,7 +1224,6 @@ static int reftable_be_transaction_prepare(struct ref_store *ref_store, ref_update_original_update_refname(u), oid_to_hex(¤t_oid), oid_to_hex(&u->old_oid)); - ret = -1; goto done; }