Add metadata-collect dracut module

To install the dracut module on your current system, change into
the dracut.module directory then run:

```
$ ERP5_USER="user" ERP5_PASS="pass" \
  ERP5_BASE_URL="https://example.local/erp5" \
  make
$ sudo make install
```

To uninstall:

```
$ sudo make uninstall
```

Then in a dracut.conf file, to include it you can add:

```
add_dracutmodules="metadata-collect"
```

You will also need to append "ip=dhcp rd.neednet=1" to the
kernel_cmdline directive inside the dracut.conf so that the
initramfs requests networking for the agent to upload results.

Make sure the dracut network modules are installed, on Debian
that is the dracut-network package.
You can otherwise check their presence using:

```
$ dracut --list-modules | grep network
```

There you should see a few modules.

dracut.module/90metadata-collect/module-setup.sh

+#!/bin/bash
+
+check() {
+    require_binaries grep head ip || return 1
+    return 255
+}
+
+depends() {
+    echo network
+}
+
+install() {
+    inst_multiple head ip grep
+    inst "$moddir"/metadata-collect-agent "/sbin/metadata-collect-agent"
+    inst_hook pre-pivot 10 "$moddir"/collect.sh
+}

dracut.module/Makefile

+guard-%:
+	@ if [ "${${*}}" = "" ]; then \
+		echo "Environment variable $* not set"; \
+		exit 1; \
+	fi
+
+include collect-sh-template.mk
+90metadata-collect/collect.sh: guard-ERP5_USER guard-ERP5_PASS guard-ERP5_BASE_URL
+	echo "$${collect_sh}" >> 90metadata-collect/collect.sh
+
+90metadata-collect/metadata-collect-agent:
+	cd ../ && ./rust-build-static.bash
+
+.PHONY: clean
+clean:
+	rm -fv 90metadata-collect/collect.sh 90metadata-collect/metadata-collect-agent
+
+.PHONY: install
+install: 90metadata-collect/metadata-collect-agent 90metadata-collect/collect.sh
+	cp -vLr "90metadata-collect" /usr/lib/dracut/modules.d
+
+.PHONY: uninstall
+uninstall:
+	rm -rfv /usr/lib/dracut/modules.d/90metadata-collect

dracut.module/collect-sh-template.mk

+define collect_sh :=
+#!/bin/bash
+
+. /lib/dracut-lib.sh
+
+DEFAULT_IF="$$(ip route show default | grep -Po "(?<=dev )\w+" | head -n 1)"
+DEFAULT_IF_MAC="$$(ip link show "$$DEFAULT_IF" | grep -Po '(?<= )\w{2}:\w{2}:\w{2}:\w{2}:\w{2}:\w{2}(?= )' | head -n 1)"
+
+ERP5_BASE_URL="$(ERP5_BASE_URL)"
+ERP5_USER="$(ERP5_USER)"
+ERP5_PASS="$(ERP5_PASS)"
+
+REFERENCE="COMP-MAC-$$(echo "$$DEFAULT_IF_MAC" | sed s/:/-/g).Metadata.Snapshot"
+
+/sbin/metadata-collect-agent "$$NEWROOT" "$$ERP5_USER" "$$ERP5_PASS" "$$REFERENCE" "$$ERP5_BASE_URL"
+endef
+
+export collect_sh
\ No newline at end of file

rust-build-static.bash

@@ -17,12 +17,16 @@ cd "acl-${ACLVERSION}"
 
 [ -f ./configure ] || ./autogen.sh
 [ -f ./config.status ] || ./configure --host "${HOST_TARGET}"
-make -j$(nproc)
+make -j"$(nproc)"
 
 cd -
 
 RUSTFLAGS="-L native=$(pwd)/acl-${ACLVERSION}/.libs -l static=acl" PKG_CONFIG_ALLOW_CROSS=1 \
 	cargo build --target "$HOST_TARGET" --release
 
-strip --strip-all "target/$HOST_TARGET/release/$(basename $(pwd))"
-objdump -T "target/$HOST_TARGET/release/$(basename $(pwd))"
+BINARY="$(pwd)/target/$HOST_TARGET/release/$(basename "$(pwd)")"
+
+strip --strip-all "$BINARY"
+objdump -T "$BINARY" || true
+
+ln -s "$BINARY" dracut.module/90metadata-collect/metadata-collect-agent