Fix general OS information length checks, add aarch64 build

.github/workflows/build.yml

@@ -36,7 +36,9 @@ jobs:
       - run: aws s3 cp sysward s3://updates.sysward.com/
       - run: aws s3 cp sysward_x86_64 s3://updates.sysward.com/
       - run: aws s3 cp sysward_arm64 s3://updates.sysward.com/
+      - run: aws s3 cp sysward_arm64 s3://updates.sysward.com/
       - run: aws s3 cp sysward_armv7l s3://updates.sysward.com/
       - run: aws s3 cp sysward_armv6l s3://updates.sysward.com/
+      - run: aws s3 cp sysward_aarch64 s3://updates.sysward.com/
       - run: aws s3 cp version s3://updates.sysward.com/
       - run: aws cloudfront create-invalidation --distribution-id EXAQZU7A32C2T --paths='/*'

Makefile

@@ -21,6 +21,7 @@ build_agent:
 	  -ldflags "-X main.Version=`date -u +%Y%m%d`${BUILD_NUMBER}" -o sysward_armv7l
 	GOOS=linux GOARCH=arm CGO_ENABLED=0 go build -a -installsuffix cgo -ldflags '-s' \
 	  -ldflags "-X main.Version=`date -u +%Y%m%d`${BUILD_NUMBER}" -o sysward_armv6l
+	cp sysward_arm64 sysward_aarch64
 	echo -n `date -u +%Y%m%d`${BUILD_NUMBER} > version
 
 docker: docker_build docker_run

operating_system.go

@@ -184,13 +184,19 @@ func getOsInformation() OperatingSystem {
 func getTotalMemory() string {
 	out, _ := runner.Run("grep", "MemTotal", "/proc/meminfo")
 	t := strings.Split(out, ":")
+	if len(t) < 2 {
+		return "0"
+	}
 	x := strings.TrimSpace(t[1])
 	return x
 }
 
 func getCPUName() string {
 	out, _ := runner.Run("grep", "name", "/proc/cpuinfo")
 	t := strings.Split(out, ":")
+	if len(t) < 2 {
+		return "Unknown"
+	}
 	return strings.TrimSpace(t[1])
 }