diff options
| -rw-r--r-- | read-cache.c | 40 | ||||
| -rwxr-xr-x | t/t1700-split-index.sh | 19 |
2 files changed, 41 insertions, 18 deletions
diff --git a/read-cache.c b/read-cache.c index d13ce83794..198e72b685 100644 --- a/read-cache.c +++ b/read-cache.c @@ -2472,32 +2472,21 @@ static int clean_shared_index_files(const char *current_hex) } static int write_shared_index(struct index_state *istate, - struct lock_file *lock, unsigned flags) + struct tempfile **temp) { - struct tempfile *temp; struct split_index *si = istate->split_index; int ret; - temp = mks_tempfile(git_path("sharedindex_XXXXXX")); - if (!temp) { - hashclr(si->base_sha1); - return do_write_locked_index(istate, lock, flags); - } move_cache_to_base_index(istate); - ret = do_write_index(si->base, temp, 1); - if (ret) { - delete_tempfile(&temp); + ret = do_write_index(si->base, *temp, 1); + if (ret) return ret; - } - ret = adjust_shared_perm(get_tempfile_path(temp)); + ret = adjust_shared_perm(get_tempfile_path(*temp)); if (ret) { - int save_errno = errno; - error("cannot fix permission bits on %s", get_tempfile_path(temp)); - delete_tempfile(&temp); - errno = save_errno; + error("cannot fix permission bits on %s", get_tempfile_path(*temp)); return ret; } - ret = rename_tempfile(&temp, + ret = rename_tempfile(temp, git_path("sharedindex.%s", sha1_to_hex(si->base->sha1))); if (!ret) { hashcpy(si->base_sha1, si->base->sha1); @@ -2565,7 +2554,22 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock, new_shared_index = istate->cache_changed & SPLIT_INDEX_ORDERED; if (new_shared_index) { - ret = write_shared_index(istate, lock, flags); + struct tempfile *temp; + int saved_errno; + + temp = mks_tempfile(git_path("sharedindex_XXXXXX")); + if (!temp) { + hashclr(si->base_sha1); + ret = do_write_locked_index(istate, lock, flags); + goto out; + } + ret = write_shared_index(istate, &temp); + + saved_errno = errno; + if (is_tempfile_active(temp)) + delete_tempfile(&temp); + errno = saved_errno; + if (ret) goto out; } diff --git a/t/t1700-split-index.sh b/t/t1700-split-index.sh index c087b63367..a66936fe9b 100755 --- a/t/t1700-split-index.sh +++ b/t/t1700-split-index.sh @@ -401,6 +401,25 @@ done <<\EOF 0642 -rw-r---w- EOF +test_expect_success POSIXPERM,SANITY 'graceful handling when splitting index is not allowed' ' + test_create_repo ro && + ( + cd ro && + test_commit initial && + git update-index --split-index && + test -f .git/sharedindex.* + ) && + cp ro/.git/index new-index && + test_when_finished "chmod u+w ro/.git" && + chmod u-w ro/.git && + GIT_INDEX_FILE="$(pwd)/new-index" git -C ro update-index --split-index && + chmod u+w ro/.git && + rm ro/.git/sharedindex.* && + GIT_INDEX_FILE=new-index git ls-files >actual && + echo initial.t >expected && + test_cmp expected actual +' + test_expect_success 'writing split index with null sha1 does not write cache tree' ' git config core.splitIndex true && git config splitIndex.maxPercentChange 0 && |