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Peter Putz authored Nov 22, 2020 and Jonah Brüchert committed Dec 06, 2020

Previously we piped to the command `cat > /dev/null` (or `cat -`). This meant the return value was always the return value of cat, hence everything was considered successful.

With this change, we just redirect to the file /dev/null or the file descriptor for stdout. Hence, if a function fails (returns a non-zero value) the script will actually terminate, as it should.

This reverts commit c5ae509b.

This was removed some years ago, so not needed anymore

The halium-initramfs has support for mounting the system image
as system-as-root, depending on its filename. Enable this.

Peter Putz authored Jan 18, 2020 and Jonah Brüchert committed Jan 18, 2020

Normally we just `adb push` the `.img` files. With this option we first compress the images on the host machine, then push and finally decompress on the device. The time to push goes down significantly and we spend a little extra time for de-/compression.

It could be that this trade off is device specific. I played with a few compression tools. `pigz` seemed to provide the best total time for me. On my setup the total time for `flash_img()` goes from from ca 14:12 to 5:42

Without compression
```
.halium-install-imgs.dYogm/rootfs.img: 1 file pushed. 3.8 MB/s (3221225472 bytes in 812.863s)
.halium-install-imgs.dYogm/system.img: 1 file pushed. 3.7 MB/s (151584768 bytes in 38.899s)

real	14m11,792s
user	0m0,674s
sys	0m4,238s
```

With compression
```
.halium-install-imgs.Pw6FU/rootfs.img.gz: 1 file pushed. 3.8 MB/s (649476288 bytes in 161.334s)
.halium-install-imgs.Pw6FU/system.img.gz: 1 file pushed. 3.9 MB/s (78788455 bytes in 19.298s)

real	5m41,985s
user	2m16,681s
sys	0m6,789s
```

Also affects debian-pm, but it contains roughly the same as neon and might need as much space soon.

Source: https://github.com/Halium/initramfs-tools-halium/blob/halium/scripts/halium#L259

Fixes #24

Fixes !25

distributions: Setup /odm symlink

See merge request !27

* EXIT also seems to be emitted if the script exits normally

This is required on Sony devices like Xperia X.

Workaround for PATH variables on non-Debian distributions.

See merge request !26

Preserve permissions and owner by GID

See merge request !25