t0001: skip test with restrictive permissions if getpwd(3) respects them

The sub-test "init in long base path" in t0001 checks the ability to handle long base paths with restrictive permissions (--x). On OpenBSD getcwd(3) fails in that case even for short paths. Check the two aspects separately by trying to use a long base path both with and without execute-only permissions. Only attempt the former if we know that getcwd(3) doesn't care. Original-patch-by: David Coppa <dcoppa@openbsd.org> Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

René Scharfe committed Aug 7, 2017 at 13:04 UTC bed67874e235e8f128607728f9a03c71e92cb955
1 file changed +28 -2
t/t0001-init.sh
+28 -2
@@ -315,18 +315,44 @@ test_expect_success 'init with separate gitdir' '
315 test_path_is_dir realgitdir/refs
316 '
317
318 -test_expect_success 'init in long base path' '
318 +test_lazy_prereq GETCWD_IGNORES_PERMS '
319 + base=GETCWD_TEST_BASE_DIR &&
320 + mkdir -p $base/dir &&
321 + chmod 100 $base ||
322 + error "bug in test script: cannot prepare $base"
323 +
324 + (cd $base/dir && /bin/pwd -P)
325 + status=$?
326 +
327 + chmod 700 $base &&
328 + rm -rf $base ||
329 + error "bug in test script: cannot clean $base"
330 + return $status
331 +'
332 +
333 +check_long_base_path () {
334 # exceed initial buffer size of strbuf_getcwd()
335 component=123456789abcdef &&
336 test_when_finished "chmod 0700 $component; rm -rf $component" &&
337 p31=$component/$component &&
338 p127=$p31/$p31/$p31/$p31 &&
339 mkdir -p $p127 &&
325 - chmod 0111 $component &&
340 + if test $# = 1
341 + then
342 + chmod $1 $component
343 + fi &&
344 (
345 cd $p127 &&
346 git init newdir
347 )
348 +}
349 +
350 +test_expect_success 'init in long base path' '
351 + check_long_base_path
352 +'
353 +
354 +test_expect_success GETCWD_IGNORES_PERMS 'init in long restricted base path' '
355 + check_long_base_path 0111
356 '
357
358 test_expect_success 're-init on .git file' '