From 3235b7053c45a734c1cdf9b117bda68b7ced29c9 Mon Sep 17 00:00:00 2001 From: "David D. Kilzer" Date: Sun, 15 Aug 2010 06:15:55 -0700 Subject: [PATCH] git-svn: fix fetch with deleted tag Currently git-svn assumes that two tags created from the same revision will have the same repo url, so it uses a ref to the tag without checking that its url matches the current url. This causes issues when fetching an svn repo where a tag was created, deleted, and then recreated under the following circumstances: - Both tags were copied from the same revision. - Both tags had the same name. - Both tags had different repository paths. - [Optional] Both tags have a file with the same name but different content. When all four conditions are met, a checksum mismatch error occurs because the content of two files with the same path differs (see t/t9155--git-svn-fetch-deleted-tag.sh): Checksum mismatch: ChangeLog 065854.... expected: ce771b.... got: 9563fd.... When only the first three conditions are met, no error occurs but the tag in git matches the first (deleted) tag instead of the last (most recent) tag (see t/t9156-git-svn-fetch-deleted-tag-2.sh). The fix is to verify that the repo url for the ref matches the current url. If the urls do not match, then a "tail" is grown on the tag name by appending a dash and rechecking the new ref's repo url until either a matching repo url is found or a new tag is created. Signed-off-by: David D. Kilzer Acked-by: Eric Wong --- git-svn.perl | 15 +++++++-- t/t9155-git-svn-fetch-deleted-tag.sh | 42 ++++++++++++++++++++++++ t/t9156-git-svn-fetch-deleted-tag-2.sh | 44 ++++++++++++++++++++++++++ 3 files changed, 99 insertions(+), 2 deletions(-) create mode 100755 t/t9155-git-svn-fetch-deleted-tag.sh create mode 100755 t/t9156-git-svn-fetch-deleted-tag-2.sh diff --git a/git-svn.perl b/git-svn.perl index 39bcb4559..9b046b693 100755 --- a/git-svn.perl +++ b/git-svn.perl @@ -2963,14 +2963,25 @@ sub other_gs { $ref_id .= "\@$r"; # just grow a tail if we're not unique enough :x $ref_id .= '-' while find_ref($ref_id); - print STDERR "Initializing parent: $ref_id\n" unless $::_q > 1; my ($u, $p, $repo_id) = ($new_url, '', $ref_id); if ($u =~ s#^\Q$url\E(/|$)##) { $p = $u; $u = $url; $repo_id = $self->{repo_id}; } - $gs = Git::SVN->init($u, $p, $repo_id, $ref_id, 1); + while (1) { + # It is possible to tag two different subdirectories at + # the same revision. If the url for an existing ref + # does not match, we must either find a ref with a + # matching url or create a new ref by growing a tail. + $gs = Git::SVN->init($u, $p, $repo_id, $ref_id, 1); + my (undef, $max_commit) = $gs->rev_map_max(1); + last if (!$max_commit); + my ($url) = ::cmt_metadata($max_commit); + last if ($url eq $gs->full_url); + $ref_id .= '-'; + } + print STDERR "Initializing parent: $ref_id\n" unless $::_q > 1; } $gs } diff --git a/t/t9155-git-svn-fetch-deleted-tag.sh b/t/t9155-git-svn-fetch-deleted-tag.sh new file mode 100755 index 000000000..ef0ac8779 --- /dev/null +++ b/t/t9155-git-svn-fetch-deleted-tag.sh @@ -0,0 +1,42 @@ +#!/bin/sh + +test_description='git svn fetch deleted tag' + +. ./lib-git-svn.sh + +test_expect_success 'setup svn repo' ' + mkdir -p import/trunk/subdir && + mkdir -p import/branches && + mkdir -p import/tags && + echo "base" >import/trunk/subdir/file && + svn_cmd import -m "import for git svn" import "$svnrepo" && + rm -rf import && + + svn_cmd mkdir --parents -m "create mybranch directory" "$svnrepo/branches/mybranch" && + svn_cmd cp -m "create branch mybranch" "$svnrepo/trunk" "$svnrepo/branches/mybranch/trunk" && + + svn_cmd co "$svnrepo/trunk" svn_project && + (cd svn_project && + echo "trunk change" >>subdir/file && + svn_cmd ci -m "trunk change" subdir/file && + + svn_cmd switch "$svnrepo/branches/mybranch/trunk" && + echo "branch change" >>subdir/file && + svn_cmd ci -m "branch change" subdir/file + ) && + + svn_cmd cp -m "create mytag attempt 1" -r5 "$svnrepo/trunk/subdir" "$svnrepo/tags/mytag" && + svn_cmd rm -m "delete mytag attempt 1" "$svnrepo/tags/mytag" && + svn_cmd cp -m "create mytag attempt 2" -r5 "$svnrepo/branches/mybranch/trunk/subdir" "$svnrepo/tags/mytag" +' + +test_expect_success 'fetch deleted tags from same revision with checksum error' ' + git svn init --stdlayout "$svnrepo" git_project && + cd git_project && + git svn fetch && + + git diff --exit-code mybranch:trunk/subdir/file tags/mytag:file && + git diff --exit-code master:subdir/file tags/mytag^:file +' + +test_done diff --git a/t/t9156-git-svn-fetch-deleted-tag-2.sh b/t/t9156-git-svn-fetch-deleted-tag-2.sh new file mode 100755 index 000000000..5ce7e2f3b --- /dev/null +++ b/t/t9156-git-svn-fetch-deleted-tag-2.sh @@ -0,0 +1,44 @@ +#!/bin/sh + +test_description='git svn fetch deleted tag 2' + +. ./lib-git-svn.sh + +test_expect_success 'setup svn repo' ' + mkdir -p import/branches && + mkdir -p import/tags && + mkdir -p import/trunk/subdir1 && + mkdir -p import/trunk/subdir2 && + mkdir -p import/trunk/subdir3 && + echo "file1" >import/trunk/subdir1/file && + echo "file2" >import/trunk/subdir2/file && + echo "file3" >import/trunk/subdir3/file && + svn_cmd import -m "import for git svn" import "$svnrepo" && + rm -rf import && + + svn_cmd co "$svnrepo/trunk" svn_project && + (cd svn_project && + echo "change1" >>subdir1/file && + echo "change2" >>subdir2/file && + echo "change3" >>subdir3/file && + svn_cmd ci -m "change" . + ) && + + svn_cmd cp -m "create mytag 1" -r2 "$svnrepo/trunk/subdir1" "$svnrepo/tags/mytag" && + svn_cmd rm -m "delete mytag 1" "$svnrepo/tags/mytag" && + svn_cmd cp -m "create mytag 2" -r2 "$svnrepo/trunk/subdir2" "$svnrepo/tags/mytag" && + svn_cmd rm -m "delete mytag 2" "$svnrepo/tags/mytag" && + svn_cmd cp -m "create mytag 3" -r2 "$svnrepo/trunk/subdir3" "$svnrepo/tags/mytag" +' + +test_expect_success 'fetch deleted tags from same revision with no checksum error' ' + git svn init --stdlayout "$svnrepo" git_project && + cd git_project && + git svn fetch && + + git diff --exit-code master:subdir3/file tags/mytag:file && + git diff --exit-code master:subdir2/file tags/mytag^:file && + git diff --exit-code master:subdir1/file tags/mytag^^:file +' + +test_done -- 2.30.2