main/postmarketos-mkinitfs: remove cache and improve performance

The lddtree script uses the scanelf utility which has some security check that causes a slowdown of the operation, executing it without privileges it's really faster.

Thanks to the speed improvement we can remove the whole caching mechanism and this solves also the issue of the dependencies not hashed.

Comparison between running lddtree as root or as nobody:
as root: time lddtree -l $BINARIES_EXTRA
as nobody: time su nobody -s /bin/sh -c "lddtree -l $(echo $BINARIES_EXTRA)"

in native chroot:

• as root: 48s
• as nobody: 0.8s

in qemu armv7:

• as root: 1m 12s
• as nobody: 23s

Closes !1100 (closed)

added 1 commit

• 9967f9aa - main/postmarketos-mkinitfs: execute lddtree without privileges

Compare with previous version

By Daniele Debernardi on 2020-04-08T20:43:24

resolved all threads

By Minecrell on 2020-04-09T07:23:40

approved this merge request

By Minecrell on 2020-04-09T07:23:42

added initramfs type::feature labels

approved this merge request

By Bart Ribbers on 2020-04-09T08:33:49

mentioned in commit 36f15b58

By Daniele Debernardi on 2020-04-09T08:35:40

mentioned in commit bd15afc2

By Daniele Debernardi on 2020-04-09T08:35:41

added 3 commits

• e2ab2fcd - 1 commit from branch master
• 36f15b58 - main/postmarketos-mkinitfs: remove initramfs-extra cache (!1133 (merged))
• bd15afc2 - main/postmarketos-mkinitfs: execute lddtree without privileges (!1133 (merged))

Compare with previous version

By Bart Ribbers on 2020-04-09T08:35:42

enabled an automatic merge when the pipeline for bd15afc2 succeeds

By Bart Ribbers on 2020-04-09T08:36:01

merged

By Bart Ribbers on 2020-04-09T08:37:22

mentioned in merge request !1100 (closed)

By Daniele Debernardi on 2020-04-12T00:17:43