From patchwork Sun Oct 14 02:05:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elijah Newren X-Patchwork-Id: 10640489 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8EB50925 for ; Sun, 14 Oct 2018 02:06:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 788A62A744 for ; Sun, 14 Oct 2018 02:06:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6D6302A746; Sun, 14 Oct 2018 02:06:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A409E2A747 for ; Sun, 14 Oct 2018 02:06:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726248AbeJNJpO (ORCPT ); Sun, 14 Oct 2018 05:45:14 -0400 Received: from mx0a-00153501.pphosted.com ([67.231.148.48]:44910 "EHLO mx0a-00153501.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725762AbeJNJpN (ORCPT ); Sun, 14 Oct 2018 05:45:13 -0400 Received: from pps.filterd (m0131697.ppops.net [127.0.0.1]) by mx0a-00153501.pphosted.com (8.16.0.23/8.16.0.23) with SMTP id w9E23LFH018127; Sat, 13 Oct 2018 19:05:55 -0700 Received: from mail.palantir.com ([8.4.231.70]) by mx0a-00153501.pphosted.com with ESMTP id 2n3ejh0q9a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=OK); Sat, 13 Oct 2018 19:05:54 -0700 Received: from sj-prod-exch-01.YOJOE.local (10.129.18.26) by sj-prod-exch-01.YOJOE.local (10.129.18.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1531.3; Sat, 13 Oct 2018 19:05:53 -0700 Received: from EX02-WEST.YOJOE.local (10.160.10.131) by sj-prod-exch-01.YOJOE.local (10.129.18.26) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.1.1531.3 via Frontend Transport; Sat, 13 Oct 2018 19:05:53 -0700 Received: from smtp-transport.yojoe.local (10.129.56.124) by EX02-WEST.YOJOE.local (10.160.10.131) with Microsoft SMTP Server id 14.3.319.2; Sat, 13 Oct 2018 19:05:48 -0700 Received: from newren2-linux.yojoe.local (newren2-linux.pa.palantir.tech [10.100.71.66]) by smtp-transport.yojoe.local (Postfix) with ESMTPS id 2E84C2101E96; Sat, 13 Oct 2018 19:05:46 -0700 (PDT) From: Elijah Newren To: CC: Elijah Newren Subject: [RFC PATCH v2 7/7] merge-recursive: improve rename/rename(1to2)/add[/add] handling Date: Sat, 13 Oct 2018 19:05:37 -0700 Message-ID: <20181014020537.17991-8-newren@gmail.com> X-Mailer: git-send-email 2.19.0.3.g98f21ceff2.dirty In-Reply-To: <20181014020537.17991-1-newren@gmail.com> References: <20181014020537.17991-1-newren@gmail.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-10-14_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=13 phishscore=0 bulkscore=0 spamscore=0 clxscore=1034 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1810140017 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When we have a rename/rename(1to2) conflict, each of the renames can collide with a file addition. Each of these rename/add conflicts suffered from the same kinds of problems that normal rename/add suffered from. Make the code use handle_file_conflicts() as well so that we get all the same fixes and consistent behavior between the different conflict types. Signed-off-by: Elijah Newren --- merge-recursive.c | 154 +++++++++++++-------------- t/t6042-merge-rename-corner-cases.sh | 29 +++-- t/t6043-merge-rename-directories.sh | 24 +++-- 3 files changed, 113 insertions(+), 94 deletions(-) diff --git a/merge-recursive.c b/merge-recursive.c index c78b347112..59811116b6 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -1709,80 +1709,17 @@ static int handle_rename_add(struct merge_options *o, ci->dst_entry1->stages[other_stage].mode); } -static int handle_file(struct merge_options *o, - struct diff_filespec *rename, - int stage, - struct rename_conflict_info *ci) -{ - char *dst_name = rename->path; - struct stage_data *dst_entry; - const char *cur_branch, *other_branch; - struct diff_filespec other; - struct diff_filespec *add; - int ret; - - if (stage == 2) { - dst_entry = ci->dst_entry1; - cur_branch = ci->branch1; - other_branch = ci->branch2; - } else { - dst_entry = ci->dst_entry2; - cur_branch = ci->branch2; - other_branch = ci->branch1; - } - - add = filespec_from_entry(&other, dst_entry, stage ^ 1); - if (add) { - int ren_src_was_dirty = was_dirty(o, rename->path); - char *add_name = unique_path(o, rename->path, other_branch); - if (update_file(o, 0, &add->oid, add->mode, add_name)) - return -1; - - if (ren_src_was_dirty) { - output(o, 1, _("Refusing to lose dirty file at %s"), - rename->path); - } - /* - * Because the double negatives somehow keep confusing me... - * 1) update_wd iff !ren_src_was_dirty. - * 2) no_wd iff !update_wd - * 3) so, no_wd == !!ren_src_was_dirty == ren_src_was_dirty - */ - remove_file(o, 0, rename->path, ren_src_was_dirty); - dst_name = unique_path(o, rename->path, cur_branch); - } else { - if (dir_in_way(rename->path, !o->call_depth, 0)) { - dst_name = unique_path(o, rename->path, cur_branch); - output(o, 1, _("%s is a directory in %s adding as %s instead"), - rename->path, other_branch, dst_name); - } else if (!o->call_depth && - would_lose_untracked(rename->path)) { - dst_name = unique_path(o, rename->path, cur_branch); - output(o, 1, _("Refusing to lose untracked file at %s; " - "adding as %s instead"), - rename->path, dst_name); - } - } - if ((ret = update_file(o, 0, &rename->oid, rename->mode, dst_name))) - ; /* fall through, do allow dst_name to be released */ - else if (stage == 2) - ret = update_stages(o, rename->path, NULL, rename, add); - else - ret = update_stages(o, rename->path, NULL, add, rename); - - if (dst_name != rename->path) - free(dst_name); - - return ret; -} - static int handle_rename_rename_1to2(struct merge_options *o, struct rename_conflict_info *ci) { /* One file was renamed in both branches, but to different names. */ + struct merge_file_info mfi; + struct diff_filespec other; + struct diff_filespec *add; struct diff_filespec *one = ci->pair1->one; struct diff_filespec *a = ci->pair1->two; struct diff_filespec *b = ci->pair2->two; + char *path_desc; output(o, 1, _("CONFLICT (rename/rename): " "Rename \"%s\"->\"%s\" in branch \"%s\" " @@ -1790,15 +1727,16 @@ static int handle_rename_rename_1to2(struct merge_options *o, one->path, a->path, ci->branch1, one->path, b->path, ci->branch2, o->call_depth ? _(" (left unresolved)") : ""); - if (o->call_depth) { - struct merge_file_info mfi; - struct diff_filespec other; - struct diff_filespec *add; - if (merge_mode_and_contents(o, one, a, b, one->path, - ci->branch1, ci->branch2, - o->call_depth * 2, &mfi)) - return -1; + path_desc = xstrfmt("%s and %s, both renamed from %s", + a->path, b->path, one->path); + if (merge_mode_and_contents(o, one, a, b, path_desc, + ci->branch1, ci->branch2, + o->call_depth * 2, &mfi)) + return -1; + free(path_desc); + + if (o->call_depth) { /* * FIXME: For rename/add-source conflicts (if we could detect * such), this is wrong. We should instead find a unique @@ -1830,8 +1768,70 @@ static int handle_rename_rename_1to2(struct merge_options *o, } else remove_file_from_cache(b->path); - } else if (handle_file(o, a, 2, ci) || handle_file(o, b, 3, ci)) - return -1; + } else { + /* + * For each destination path, we need to see if there is a + * rename/add collision. If not, we can write the file out + * to the specified location. + */ + add = filespec_from_entry(&other, ci->dst_entry1, 2 ^ 1); + if (add) { + if (handle_file_collision(o, a->path, + NULL, NULL, + ci->branch1, ci->branch2, + &mfi.oid, mfi.mode, + &add->oid, add->mode) < 0) + return -1; + } else { + char *new_path = NULL; + if (dir_in_way(a->path, !o->call_depth, 0)) { + new_path = unique_path(o, a->path, ci->branch1); + output(o, 1, _("%s is a directory in %s adding " + "as %s instead"), + a->path, ci->branch2, new_path); + } else if (would_lose_untracked(a->path)) { + new_path = unique_path(o, a->path, ci->branch1); + output(o, 1, _("Refusing to lose untracked file" + " at %s; adding as %s instead"), + a->path, new_path); + } + + if (update_file(o, 0, &mfi.oid, mfi.mode, new_path ? new_path : a->path)) + return -1; + free(new_path); + if (update_stages(o, a->path, NULL, a, NULL)) + return -1; + } + + add = filespec_from_entry(&other, ci->dst_entry2, 3 ^ 1); + if (add) { + if (handle_file_collision(o, b->path, + NULL, NULL, + ci->branch1, ci->branch2, + &add->oid, add->mode, + &mfi.oid, mfi.mode) < 0) + return -1; + } else { + char *new_path = NULL; + if (dir_in_way(b->path, !o->call_depth, 0)) { + new_path = unique_path(o, b->path, ci->branch2); + output(o, 1, _("%s is a directory in %s adding " + "as %s instead"), + b->path, ci->branch1, new_path); + } else if (would_lose_untracked(b->path)) { + new_path = unique_path(o, b->path, ci->branch2); + output(o, 1, _("Refusing to lose untracked file" + " at %s; adding as %s instead"), + b->path, new_path); + } + + if (update_file(o, 0, &mfi.oid, mfi.mode, new_path ? new_path : b->path)) + return -1; + free(new_path); + if (update_stages(o, b->path, NULL, NULL, b)) + return -1; + } + } return 0; } diff --git a/t/t6042-merge-rename-corner-cases.sh b/t/t6042-merge-rename-corner-cases.sh index 4cfcde3082..534f7b55a1 100755 --- a/t/t6042-merge-rename-corner-cases.sh +++ b/t/t6042-merge-rename-corner-cases.sh @@ -684,7 +684,7 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting git ls-files -u c >out && test_line_count = 2 out && git ls-files -o >out && - test_line_count = 5 out && + test_line_count = 1 out && git rev-parse >expect \ A:a C:b B:b C:c B:c && @@ -692,14 +692,27 @@ test_expect_success 'rename/rename/add-dest merge still knows about conflicting :1:a :2:b :3:b :2:c :3:c && test_cmp expect actual && - git rev-parse >expect \ - C:c B:c C:b B:b && - git hash-object >actual \ - c~HEAD c~B\^0 b~HEAD b~B\^0 && - test_cmp expect actual && + # Record some contents for re-doing merges + git cat-file -p A:a >stuff && + git cat-file -p C:b >important_info && + git cat-file -p B:c >precious_data && + >empty && - test_path_is_missing b && - test_path_is_missing c + # Test the merge in b + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "B^0" \ + important_info empty stuff && + test_cmp important_info b && + + # Test the merge in c + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "B^0" \ + stuff empty precious_data && + test_cmp stuff c ) ' diff --git a/t/t6043-merge-rename-directories.sh b/t/t6043-merge-rename-directories.sh index fedaeafc55..5c01a0c14a 100755 --- a/t/t6043-merge-rename-directories.sh +++ b/t/t6043-merge-rename-directories.sh @@ -1078,7 +1078,7 @@ test_expect_success '5c-check: Transitive rename would cause rename/rename/renam git ls-files -u >out && test_line_count = 6 out && git ls-files -o >out && - test_line_count = 3 out && + test_line_count = 1 out && git rev-parse >actual \ :0:y/b :0:y/c :0:y/e && @@ -1094,9 +1094,9 @@ test_expect_success '5c-check: Transitive rename would cause rename/rename/renam test_cmp expect actual && git hash-object >actual \ - w/d~HEAD w/d~B^0 z/d && + z/d && git rev-parse >expect \ - O:x/d B:w/d O:x/d && + O:x/d && test_cmp expect actual && test_path_is_missing x/d && test_path_is_file y/d && @@ -3672,7 +3672,7 @@ test_expect_success '11e-check: Avoid deleting not-uptodate with dir rename/rena git ls-files -u >out && test_line_count = 4 out && git ls-files -o >out && - test_line_count = 4 out && + test_line_count = 3 out && echo different >expected && echo mods >>expected && @@ -3684,11 +3684,17 @@ test_expect_success '11e-check: Avoid deleting not-uptodate with dir rename/rena O:z/a O:z/b O:x/d O:x/c O:x/c A:y/c O:x/c && test_cmp expect actual && - git hash-object >actual \ - y/c~B^0 y/c~HEAD && - git rev-parse >expect \ - O:x/c A:y/c && - test_cmp expect actual + # See if y/c~merged has expected contents; requires manually + # doing the expected file merge + git cat-file -p A:y/c >c1 && + git cat-file -p B:z/c >c2 && + >empty && + test_must_fail git merge-file \ + -L "HEAD" \ + -L "" \ + -L "B^0" \ + c1 empty c2 && + test_cmp c1 y/c~merged ) '