From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ronnie Sahlberg Subject: [PATCH v9 06/44] refs.c: add an err argument to delete_ref_loose Date: Thu, 15 May 2014 16:15:03 -0700 Message-ID: <1400195741-22996-7-git-send-email-sahlberg@google.com> References: <1400195741-22996-1-git-send-email-sahlberg@google.com> Cc: mhagger@alum.mit.edu, Ronnie Sahlberg To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Fri May 16 01:16:22 2014 Return-path: Envelope-to: gcvg-git-2@plane.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Wl4sv-0004pQ-Kn for gcvg-git-2@plane.gmane.org; Fri, 16 May 2014 01:16:21 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756203AbaEOXQO (ORCPT ); Thu, 15 May 2014 19:16:14 -0400 Received: from mail-ve0-f201.google.com ([209.85.128.201]:54246 "EHLO mail-ve0-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754921AbaEOXPu (ORCPT ); Thu, 15 May 2014 19:15:50 -0400 Received: by mail-ve0-f201.google.com with SMTP id db11so325821veb.0 for ; Thu, 15 May 2014 16:15:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Pt6u0fDS2Qbg90ik8NY7Pw3rPqL4n7ngdtEBw+HrFks=; b=BoKl0s+IfFClLoE0nom1++9vjPJP681X3YNWURwAzrFxLokQ/YW5rCnr91QCa3X5y7 SoSc9CvUUJ9xjLFgt+8YtjstpnX/MyatNuqd45dlMbTqaRRqW+432NO4LIKmIERul8Vg eNjEoG2IjPru5D3MmiVVKHmSka0q33khiBWP3uEHFbrD7znmpd0BNNqG2OLL/MVolDz7 /apPoCg0Ip7+WIzyLu5EypmCPnC94VIZ+m1kWOH6ZhYuCxg2TYmDBMCbmi419/Y3Znui F7XILLxZ3ASFaHmFtAkYItBF0dZkn+JYjqNZyd8WSPxrVtkVGvlGFLX6kuAHWUxrE1ze xVFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Pt6u0fDS2Qbg90ik8NY7Pw3rPqL4n7ngdtEBw+HrFks=; b=P3cMxgQQ6VzhHp6yl/Zxav96+1dxTshg7FgIFAXUaiirsZx9mc+JtOW68QIeuFQAZP IDa0ODBRMxTH2i9Dm0ZG5zoXPDGCvrmp5yoDnc7EU7IBXslDpJDTRfeo2ZZdGNm6PuO8 W0Mavj78jNheTeXZLd5gxAO5VV3u5D+l9KzxJZhdRfBT7MHjJ7ckcv+zzNyZBqFnuPyy WOxWSdnQc4Kc42WIZHdnYHojnE9kgSRAnPE58fHMMmyLE9XdYWhWglttRaCY7fGv81nw hTXtfFq4SPVbYC2YQ57oB8+SZcBMHVKF9adSr7intxQH77ziotfAuTa1hoQNwGnIKoJH R6SQ== X-Gm-Message-State: ALoCoQlS/MuFkaxCX66qcyEXlGIE3DDJeQnYsBO0fu8O8BfeTv5wLLd8brbM5kdkEfh72Th5DZjj X-Received: by 10.236.36.33 with SMTP id v21mr5511443yha.53.1400195749770; Thu, 15 May 2014 16:15:49 -0700 (PDT) Received: from corp2gmr1-1.hot.corp.google.com (corp2gmr1-1.hot.corp.google.com [172.24.189.92]) by gmr-mx.google.com with ESMTPS id k43si318887yhq.3.2014.05.15.16.15.49 for (version=TLSv1.1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 15 May 2014 16:15:49 -0700 (PDT) Received: from sahlberg1.mtv.corp.google.com (sahlberg1.mtv.corp.google.com [172.27.69.52]) by corp2gmr1-1.hot.corp.google.com (Postfix) with ESMTP id 98BDE31C314; Thu, 15 May 2014 16:15:44 -0700 (PDT) Received: by sahlberg1.mtv.corp.google.com (Postfix, from userid 177442) id 4476CE103B; Thu, 15 May 2014 16:15:44 -0700 (PDT) X-Mailer: git-send-email 2.0.0.rc3.477.gffe78a2 In-Reply-To: <1400195741-22996-1-git-send-email-sahlberg@google.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: Add an err argument to delete_loose_ref so that we can pass a descriptive error string back to the caller. Pass the err argument from transaction commit to this function so that transaction users will have a nice error string if the transaction failed due to delete_loose_ref. Add a new function unlink_or_err that we can call from delete_ref_loose. This function is similar to unlink_or_warn except that we can pass it an err argument. If err is non-NULL the function will populate err instead of printing a warning(). Signed-off-by: Ronnie Sahlberg --- refs.c | 39 +++++++++++++++++++++++++++++++++------ 1 file changed, 33 insertions(+), 6 deletions(-) diff --git a/refs.c b/refs.c index 4ebf130..e4d35c9 100644 --- a/refs.c +++ b/refs.c @@ -2491,17 +2491,43 @@ static int repack_without_ref(const char *refname) return repack_without_refs(&refname, 1, NULL); } -static int delete_ref_loose(struct ref_lock *lock, int flag) +static int add_err_if_unremovable(const char *op, const char *file, + struct strbuf *e, int rc) +{ + int err = errno; + if (rc < 0 && err != ENOENT) { + strbuf_addf(e, "unable to %s %s: %s", + op, file, strerror(errno)); + errno = err; + } + return rc; +} + +static int unlink_or_err(const char *file, struct strbuf *err) +{ + if (err) + return add_err_if_unremovable("unlink", file, err, + unlink(file)); + else + return unlink_or_warn(file); +} + +static int delete_ref_loose(struct ref_lock *lock, int flag, struct strbuf *err) { if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) { /* loose */ - int err, i = strlen(lock->lk->filename) - 5; /* .lock */ + int res, i = strlen(lock->lk->filename) - 5; /* .lock */ lock->lk->filename[i] = 0; - err = unlink_or_warn(lock->lk->filename); + res = unlink_or_err(lock->lk->filename, err); lock->lk->filename[i] = '.'; - if (err && errno != ENOENT) + if (res && errno != ENOENT) { + if (err) + strbuf_addf(err, + "failed to delete loose ref '%s'", + lock->lk->filename); return 1; + } } return 0; } @@ -2514,7 +2540,7 @@ int delete_ref(const char *refname, const unsigned char *sha1, int delopt) lock = lock_ref_sha1_basic(refname, sha1, delopt, &flag); if (!lock) return 1; - ret |= delete_ref_loose(lock, flag); + ret |= delete_ref_loose(lock, flag, NULL); /* removing the loose one could have resurrected an earlier * packed one. Also, if it was not loose we need to repack @@ -3499,7 +3525,8 @@ int ref_transaction_commit(struct ref_transaction *transaction, if (update->lock) { delnames[delnum++] = update->lock->ref_name; - ret |= delete_ref_loose(update->lock, update->type); + ret |= delete_ref_loose(update->lock, update->type, + err); } } -- 2.0.0.rc3.477.gffe78a2