diff --git a/libbpfgo.go b/libbpfgo.go index 0f0d97ec..a24cc32b 100644 --- a/libbpfgo.go +++ b/libbpfgo.go @@ -127,8 +127,9 @@ func MinorVersion() int { return C.LIBBPF_MINOR_VERSION } -// VersionString returns the string representation of the libbpf version. -func VersionString() string { +// LibbpfVersionString returns the string representation of the libbpf version which +// libbpfgo is linked against +func LibbpfVersionString() string { return fmt.Sprintf("v%d.%d", MajorVersion(), MinorVersion()) } diff --git a/selftest/version/Makefile b/selftest/version/Makefile new file mode 100644 index 00000000..8509d35e --- /dev/null +++ b/selftest/version/Makefile @@ -0,0 +1,91 @@ +BASEDIR = $(abspath ../../) + +OUTPUT = ../../output + +LIBBPF_SRC = $(abspath ../../libbpf/src) +LIBBPF_OBJ = $(abspath $(OUTPUT)/libbpf.a) + +CC = gcc +CLANG = clang + +ARCH := $(shell uname -m) +ARCH := $(subst x86_64,amd64,$(ARCH)) + +CFLAGS = -g -O2 -Wall -fpie +LDFLAGS = + +CGO_CFLAGS_STATIC = "-I$(abspath $(OUTPUT))" +CGO_LDFLAGS_STATIC = "-lelf -lz $(LIBBPF_OBJ)" +CGO_EXTLDFLAGS_STATIC = '-w -extldflags "-static"' + +CGO_CFGLAGS_DYN = "-I. -I/usr/include/" +CGO_LDFLAGS_DYN = "-lelf -lz -lbpf" + +.PHONY: $(TEST) +.PHONY: $(TEST).go +.PHONY: $(TEST).bpf.c + +TEST = main + +all: $(TEST)-static + +.PHONY: libbpfgo +.PHONY: libbpfgo-static +.PHONY: libbpfgo-dynamic + +## libbpfgo + +libbpfgo-static: + $(MAKE) -C $(BASEDIR) libbpfgo-static + +libbpfgo-dynamic: + $(MAKE) -C $(BASEDIR) libbpfgo-dynamic + +vmlinuxh: + $(MAKE) -C $(BASEDIR) vmlinuxh + +outputdir: + $(MAKE) -C $(BASEDIR) outputdir + +## test bpf dependency + +$(TEST).bpf.o: $(TEST).bpf.c + $(MAKE) -C $(BASEDIR) vmlinuxh + $(CLANG) $(CFLAGS) -target bpf -I$(OUTPUT) -c $< -o $@ + +## test + +.PHONY: $(TEST)-static +.PHONY: $(TEST)-dynamic + +$(TEST)-static: libbpfgo-static | $(TEST).bpf.o + CC=$(CLANG) \ + CGO_CFLAGS=$(CGO_CFLAGS_STATIC) \ + CGO_LDFLAGS=$(CGO_LDFLAGS_STATIC) \ + GOOS=linux GOARCH=$(ARCH) \ + go build \ + -tags netgo -ldflags $(CGO_EXTLDFLAGS_STATIC) \ + -o $(TEST)-static ./$(TEST).go + +$(TEST)-dynamic: libbpfgo-dynamic | $(TEST).bpf.o + CC=$(CLANG) \ + CGO_CFLAGS=$(CGO_CFLAGS_DYN) \ + CGO_LDFLAGS=$(CGO_LDFLAGS_DYN) \ + go build -o ./$(TEST)-dynamic ./$(TEST).go + +## run + +.PHONY: run +.PHONY: run-static +.PHONY: run-dynamic + +run: run-static + +run-static: $(TEST)-static + ./run.sh $(TEST)-static + +run-dynamic: $(TEST)-dynamic + ./run.sh $(TEST)-dynamic + +clean: + rm -f *.o *-static *-dynamic diff --git a/selftest/version/go.mod b/selftest/version/go.mod new file mode 100644 index 00000000..d282d08b --- /dev/null +++ b/selftest/version/go.mod @@ -0,0 +1,7 @@ +module github.com/aquasecurity/libbpfgo/selftest/perfbuffers + +go 1.16 + +require github.com/aquasecurity/libbpfgo v0.2.1-libbpf-0.4.0 + +replace github.com/aquasecurity/libbpfgo => ../../ diff --git a/selftest/version/go.sum b/selftest/version/go.sum new file mode 100644 index 00000000..3b1886cc --- /dev/null +++ b/selftest/version/go.sum @@ -0,0 +1,11 @@ +github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY= +github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg= +golang.org/x/sys v0.0.0-20210514084401-e8d321eab015/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/selftest/version/main.bpf.c b/selftest/version/main.bpf.c new file mode 100644 index 00000000..2d4d2dbd --- /dev/null +++ b/selftest/version/main.bpf.c @@ -0,0 +1,6 @@ +//+build ignore +#ifdef asm_inline +#undef asm_inline +#define asm_inline asm +#endif + diff --git a/selftest/version/main.go b/selftest/version/main.go new file mode 100644 index 00000000..311d6400 --- /dev/null +++ b/selftest/version/main.go @@ -0,0 +1,26 @@ +package main + +import ( + "log" + "os/exec" + "strings" + + "github.com/aquasecurity/libbpfgo" +) + +func main() { + + cmd := exec.Command("git", "describe", "--tags") + cmd.Dir = "../../libbpf" + + b, err := cmd.CombinedOutput() + if err != nil { + log.Fatal(string(b), err) + } + + // libbpf doesn't put the patch version in exported version + // symbols, so use just prefix to exclude it + if strings.HasPrefix(libbpfgo.LibbpfVersionString(), string(b)) { + log.Fatalf("Error reading exported symbols for libbpf major and minor version: %s is not %s", libbpfgo.LibbpfVersionString(), b) + } +} diff --git a/selftest/version/run.sh b/selftest/version/run.sh new file mode 120000 index 00000000..c1317de3 --- /dev/null +++ b/selftest/version/run.sh @@ -0,0 +1 @@ +../common/run-5.8.sh \ No newline at end of file