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Matthieu Baerts (NGI0) 1e5c009126 selftests/bpf: Remove hexdump dependency 
The verification signature header generation requires converting a
binary certificate to a C array. Previously this only worked with xxd,
and a switch to hexdump has been done in commit b640d556a2
("selftests/bpf: Remove xxd util dependency").

hexdump is a more common utility program, yet it might not be installed
by default. When it is not installed, BPF selftests build without
errors, but tests_progs is unusable: it exits with the 255 code and
without any error messages. When manually reproducing the issue, it is
not too hard to find out that the generated verification_cert.h file is
incorrect, but that's time consuming. When digging the BPF selftests
build logs, this line can be seen amongst thousands others, but ignored:

  /bin/sh: 2: hexdump: not found

Here, od is used instead of hexdump. od is coming from the coreutils
package, and this new od command produces the same output when using od
from GNU coreutils, uutils, and even busybox. This is more portable, and
it produces a similar results to what was done before with hexdump:
there is an extra comma at the end instead of trailing whitespaces,
but the C code is not impacted.

Fixes: b640d556a2 ("selftests/bpf: Remove xxd util dependency")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Link: https://lore.kernel.org/r/20260218-bpf-sft-hexdump-od-v2-1-2f9b3ee5ab86@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-18 15:11:20 -08:00
..
accounting delayacct: add timestamp of delay max 2026-01-31 16:16:06 -08:00
arch Loongarch: 2026-02-13 11:31:15 -08:00
bootconfig
bpf bpftool: Fix truncated netlink dumps 2026-02-17 16:54:03 -08:00
build tools build: Fix the common set of features test wrt libopenssl 2025-12-27 20:26:44 -08:00
certs
cgroup
counter
crypto
debugging kernel-chktaint: add reporting for tainted modules 2026-01-26 19:07:15 -08:00
dma dma-mapping updates for Linux 6.19: 2025-12-06 09:25:05 -08:00
docs tools: sphinx-build-wrapper: improve its help message 2026-02-02 09:57:46 -07:00
firewire
firmware
gpio
hv
iio
include Updates for the VDSO subsystem: 2026-02-10 17:02:23 -08:00
kvm/kvm_stat
laptop
leds
lib libbpf: Remove extern declaration of bpf_stream_vprintk() 2026-02-18 14:58:47 -08:00
memory-model
mm tools/mm/slabinfo: fix --partial long option mapping 2026-01-20 19:24:43 -08:00
net NFSD 7.0 Release Notes 2026-02-12 08:23:53 -08:00
objtool - A nice cleanup to the paravirt code containing a unification of the paravirt 2026-02-10 19:01:45 -08:00
pcmcia
perf Loongarch: 2026-02-13 11:31:15 -08:00
power cpupower: make systemd unit installation optional 2026-01-16 13:41:26 -07:00
rcu
sched
sched_ext sched_ext: Changes for v6.20 2026-02-11 13:35:24 -08:00
scripts tools headers: Sync syscall table with kernel sources 2025-12-24 11:43:36 -08:00
sound
spi spi: tools: Add include folder to .gitignore 2026-02-09 12:27:31 +00:00
testing selftests/bpf: Remove hexdump dependency 2026-02-18 15:11:20 -08:00
thermal tools/thermal/thermal-engine: Fix format string bug in thermal-engine 2025-11-25 11:00:28 +01:00
time
tracing rtla: Fix parse_cpu_set() bug introduced by strtoi() 2026-01-13 08:32:52 +01:00
usb
verification verification/rvgen: Remove unused variable declaration from containers 2026-01-12 07:43:51 +01:00
virtio tools/virtio: add device, device_driver stubs 2025-12-24 08:02:56 -05:00
wmi
workqueue
writeback
Makefile