Added AlmaLinux drivekit and added RockyLinux 9

Signed-off-by: Daniele De Lorenzi <daniele.delorenzi@fastnetserv.net>

pkg/driverbuilder/builder/almalinux.go

@@ -0,0 +1,76 @@
+package builder
+
+import (
+	_ "embed"
+	"fmt"
+	"github.com/falcosecurity/driverkit/pkg/kernelrelease"
+)
+
+//go:embed templates/almalinux.sh
+var almaTemplate string
+
+// TargetTypeAlma identifies the Alma target.
+const TargetTypeAlma Type = "alma"
+
+func init() {
+	BuilderByTarget[TargetTypeAlma] = &alma{}
+}
+
+type almaTemplateData struct {
+	commonTemplateData
+	KernelDownloadURL string
+}
+
+// alma is a driverkit target.
+type alma struct {
+}
+
+func (c *alma) Name() string {
+	return TargetTypeAlma.String()
+}
+
+func (c *alma) TemplateScript() string {
+	return almaTemplate
+}
+
+func (c *alma) URLs(_ Config, kr kernelrelease.KernelRelease) ([]string, error) {
+	return fetchAlmaKernelURLS(kr), nil
+}
+
+func (c *alma) TemplateData(cfg Config, kr kernelrelease.KernelRelease, urls []string) interface{} {
+	return almaTemplateData{
+		commonTemplateData: cfg.toTemplateData(c, kr),
+		KernelDownloadURL:  urls[0],
+	}
+}
+
+func fetchAlmaKernelURLS(kr kernelrelease.KernelRelease) []string {
+	almaReleases := []string{
+		"8",
+		"8.6",
+		"9",
+		"9.0",
+	}
+
+	urls := []string{}
+	for _, r := range almaReleases {
+		if r >= "9" {
+			urls = append(urls, fmt.Sprintf(
+				"https://repo.almalinux.org/almalinux/%s/AppStream/%s/os/Packages/kernel-devel-%s%s.rpm",
+				r,
+				kr.Architecture.ToNonDeb(),
+				kr.Fullversion,
+				kr.FullExtraversion,
+			))
+		}else{
+			urls = append(urls, fmt.Sprintf(
+				"https://repo.almalinux.org/almalinux/%s/BaseOS/%s/os/Packages/kernel-devel-%s%s.rpm",
+				r,
+				kr.Architecture.ToNonDeb(),
+				kr.Fullversion,
+				kr.FullExtraversion,
+			))
+		}
+	}
+	return urls
+}

pkg/driverbuilder/builder/rocky.go

@@ -48,17 +48,30 @@ func fetchRockyKernelURLS(kr kernelrelease.KernelRelease) []string {
 	rockyReleases := []string{
 		"8",
 		"8.5",
+		"8.6",
+		"9",
+		"9.0",
 	}
 
 	urls := []string{}
 	for _, r := range rockyReleases {
-		urls = append(urls, fmt.Sprintf(
-			"https://download.rockylinux.org/pub/rocky/%s/BaseOS/%s/os/Packages/k/kernel-devel-%s%s.rpm",
-			r,
-			kr.Architecture.ToNonDeb(),
-			kr.Fullversion,
-			kr.FullExtraversion,
-		))
+		if r >= "9" {
+			urls = append(urls, fmt.Sprintf(
+				"https://download.rockylinux.org/pub/rocky/%s/AppStream/%s/os/Packages/k/kernel-devel-%s%s.rpm",
+				r,
+				kr.Architecture.ToNonDeb(),
+				kr.Fullversion,
+				kr.FullExtraversion,
+			))
+		}else{
+			urls = append(urls, fmt.Sprintf(
+				"https://download.rockylinux.org/pub/rocky/%s/BaseOS/%s/os/Packages/k/kernel-devel-%s%s.rpm",
+				r,
+				kr.Architecture.ToNonDeb(),
+				kr.Fullversion,
+				kr.FullExtraversion,
+			))
+		}
 	}
 	return urls
 }

pkg/driverbuilder/builder/templates/almalinux.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+set -xeuo pipefail
+
+rm -Rf {{ .DriverBuildDir }}
+mkdir {{ .DriverBuildDir }}
+rm -Rf /tmp/module-download
+mkdir -p /tmp/module-download
+
+curl --silent -SL {{ .ModuleDownloadURL }} | tar -xzf - -C /tmp/module-download
+mv /tmp/module-download/*/driver/* {{ .DriverBuildDir }}
+
+cp /driverkit/module-Makefile {{ .DriverBuildDir }}/Makefile
+bash /driverkit/fill-driver-config.sh {{ .DriverBuildDir }}
+
+# Fetch the kernel
+mkdir /tmp/kernel-download
+cd /tmp/kernel-download
+curl --silent -o kernel-devel.rpm -SL {{ .KernelDownloadURL }}
+rpm2cpio kernel-devel.rpm | cpio --extract --make-directories
+rm -Rf /tmp/kernel
+mkdir -p /tmp/kernel
+mv usr/src/kernels/*/* /tmp/kernel
+
+{{ if .BuildModule }}
+# Build the module
+cd {{ .DriverBuildDir }}
+make CC=/usr/bin/gcc-{{ .GCCVersion }} KERNELDIR=/tmp/kernel
+mv {{ .ModuleDriverName }}.ko {{ .ModuleFullPath }}
+strip -g {{ .ModuleFullPath }}
+# Print results
+modinfo {{ .ModuleFullPath }}
+{{ end }}
+
+{{ if .BuildProbe }}
+# Build the eBPF probe
+cd {{ .DriverBuildDir }}/bpf
+make KERNELDIR=/tmp/kernel
+ls -l probe.o
+{{ end }}