bin/60353: cpio(1): tests are failing to run at all

["campbell+netbsd%mumble.net@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60353
>Category:       bin
>Synopsis:       cpio(1): tests are failing to run at all
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 23 15:50:00 +0000 2026
>Originator:     Taylor R Campbell
>Release:        current
>Organization:
The NetCPIO Notfoundation
>Environment:
>Description:

	Since the libarchive 3.8.7 update in May, the cpio(1) tests
	have been failing to start because (a) the atf test working
	directory is owned root:wheel and mode 0700 but (b) the cpio
	test newly drops privileges to the uid of nobody and a gid that
	is equal to the uid of nobody, which lacks permission to use
	the bsdcpio symlink we create in the working directory to get
	the tests matching:

https://releng.netbsd.org/b5reports/i386/commits-2026.05.html#build-2026.05.03.14.40.12
https://releng.netbsd.org/b5reports/i386/2026/2026.05.03.14.40.12/test.html#usr.bin_cpio_t_cpio_cpio

Test case: usr.bin/cpio/t_cpio/cpio

Duration: 0.023406 seconds
Termination reason

FAILED: atf-check failed; see the output of the test for details
Standard output stream

Executing command [ /usr/tests/usr.bin/cpio/h_cpio -p /tmp/atf-run.sib4SG/bsdcpio -r /usr/tests/usr.bin/cpio ]

Standard error stream

Fail: incorrect exit status: 1, expected: 0
stdout:
Will switch to user nobody (uid 32767 gid 39)

If tests fail or crash, details will be in:
   /tmp/h_cpio.2026-05-04T06.04.46-000

Reference files will be read from: /usr/tests/usr.bin/cpio
Running tests on: "/tmp/atf-run.sib4SG/bsdcpio"
Exercising: bsdcpio 3.8.7 - libarchive 3.8.7 zlib/1.3.1 liblzma/5.8.3 bz2lib/1.0.8 libzstd/1.5.7 openssl/3.5.6 libb2/bundled 

  0: test_0                                                          
stderr:

File "/tmp/atf-run.sib4SG/bsdcpio" does not exist; aborting test.

>How-To-Repeat:

	cd /usr/tests/usr.bin/cpio && atf-run | atf-report

>Fix:

	Yes, please!