NetBSD Problem Report #60353

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Date: Tue, 23 Jun 2026 15:45:18 +0000 (UTC)
From: campbell+netbsd@mumble.net
Reply-To: campbell+netbsd@mumble.net
To: gnats-bugs@NetBSD.org
Subject: cpio(1): tests are failing to run at all
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X-From4GNATS: "campbell+netbsd@mumble.net via gnats" <gnats-admin@NetBSD.org>

>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
>Last-Modified:  Tue Jun 23 15:55:01 +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!

>Audit-Trail:
From: "Taylor R Campbell" <riastradh@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/60353 CVS commit: src
Date: Tue, 23 Jun 2026 15:52:58 +0000

 Module Name:	src
 Committed By:	riastradh
 Date:		Tue Jun 23 15:52:58 UTC 2026

 Modified Files:
 	src/external/bsd/libarchive/dist/test_utils: test_main.c
 	src/tests/usr.bin/cpio: t_cpio.sh

 Log Message:
 libarchive: Fix cpio(1) tests.

 1. When dropping privileges, setegid to the _gid_ of user `nobody',
    not to the _uid_ of user `nobody'.

 2. In the test, grant that user access to the atf test working
    directory so it can execute the `bsdcpio' symlink we create in
    order to get argv[0] set appropriately for the error messages that
    the test checks for.

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


 To generate a diff of this commit:
 cvs rdiff -u -r1.7 -r1.8 \
     src/external/bsd/libarchive/dist/test_utils/test_main.c
 cvs rdiff -u -r1.1 -r1.2 src/tests/usr.bin/cpio/t_cpio.sh

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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