Bug 237954

Summary:	/usr/bin/hexdump fails with capabilities error when used with -s option
Product:	Base System	Reporter:	Alex Kozlov <ak>
Component:	bin	Assignee:	Kyle Evans <kevans>
Status:	Closed Works As Intended
Severity:	Affects Only Me
Priority:	---
Version:	12.0-STABLE
Hardware:	Any
OS:	Any

Description Alex Kozlov freebsd_committer

2019-05-17 19:01:37 UTC

Not sure if you're the right person, but you're the last who
touched hexdump -s option's logic, so it's worth a shot.

The hexdump on FreeBSD 12.0 fails with capabilities error when used with -s option:
$hexdump -s 1 -n 1 -e '"%c""\n"' /etc/rc
hexdump: /etc/rc: Capabilities insufficient

It seems that it misses CAP_SEEK_TELL right.

Comment 1 Alex Kozlov freebsd_committer

2019-05-18 17:50:13 UTC

Well, after some more research it seems to be a local configuration issue.

$ident /usr/bin/hexdump
 $FreeBSD: head/usr.bin/hexdump/display.c 319887 2017-06-13 01:05:55Z emaste $

The r319887 revision is before r327567 by kevans and in fact before FreeBSD 12.0R
It appears that this installation has a few dozen files that were not updated.
I'm not sure how it happened, perhaps it's connected to my use of install -SC
and slow media (SD card). Anyway, I reinstalled 12.0R and hexdump works as expected. I'm also checked 11.2R and it seems hexdump works there too.
So I'm closing this bug. Sorry for the noise.

Comment 2 Kyle Evans freebsd_committer

2019-05-18 17:54:54 UTC

(In reply to Alex Kozlov from comment #1)

Hiya,

Good to hear! =-) Thanks for reporting back