zdtm: add a test for --allow-uprobes option

Program flow:
- Parse the test's own executable to calculate the file offset of the uprobe
target function symbol
- Enable the uprobe at the target function
- Call the target function to trigger the uprobe, and hence the uprobes vma
creation
- C/R
- Call the target function again to check that no SIGTRAP is sent, since the
uprobe is still active

At least v1.7 of libtracefs is required because that's when
tracefs_instance_reset was introduced. The uprobes API was introduced in v1.4,
and the dynamic events API was introduced in v1.3.

Ubuntu Focal doesn't have libtracefs. Jammy has v1.2.5, and Noble has v1.7.

Signed-off-by: Shashank Balaji <[email protected]>

Author: shashank-mahadasyam

contrib/dependencies/apk-packages.sh

@@ -6,6 +6,7 @@ apk add --no-cache \
 	build-base \
 	coreutils \
 	e2fsprogs \
+	elfutils-dev \
 	git \
 	gnutls-dev \
 	go \
@@ -20,6 +21,8 @@ apk add --no-cache \
 	libdrm-dev \
 	libnet-dev \
 	libnl3-dev \
+	libtraceevent-dev \
+	libtracefs-dev \
 	nftables \
 	nftables-dev \
 	perl \

contrib/dependencies/apt-cross-packages.sh

@@ -14,6 +14,8 @@ fi
 	libc6-"${DEBIAN_ARCH}"-cross \
 	libc6-dev-"${DEBIAN_ARCH}"-cross \
 	libcap-dev:"${DEBIAN_ARCH}" \
+	libdrm-dev:"${DEBIAN_ARCH}" \
+	libelf-dev:"${DEBIAN_ARCH}" \
 	libexpat1-dev:"${DEBIAN_ARCH}" \
 	libgnutls28-dev:"${DEBIAN_ARCH}" \
 	libnet-dev:"${DEBIAN_ARCH}" \
@@ -23,9 +25,10 @@ fi
 	libprotobuf-c-dev:"${DEBIAN_ARCH}" \
 	libprotobuf-dev:"${DEBIAN_ARCH}" \
 	libssl-dev:"${DEBIAN_ARCH}" \
+	libtraceevent-dev:"${DEBIAN_ARCH}" \
+	libtracefs-dev:"${DEBIAN_ARCH}" \
 	ncurses-dev:"${DEBIAN_ARCH}" \
 	uuid-dev:"${DEBIAN_ARCH}" \
-	libdrm-dev:"${DEBIAN_ARCH}" \
 	build-essential \
 	pkg-config \
 	git \

contrib/dependencies/apt-packages.sh

@@ -19,6 +19,7 @@ fi
 	libbsd-dev \
 	libcap-dev \
 	libdrm-dev \
+	libelf-dev \
 	libgnutls28-dev \
 	libgnutls30 \
 	libnet-dev \
@@ -28,6 +29,8 @@ fi
 	libprotobuf-c-dev \
 	libprotobuf-dev \
 	libselinux-dev \
+	libtraceevent-dev \
+	libtracefs-dev \
 	pkg-config \
 	protobuf-c-compiler \
 	protobuf-compiler \

contrib/dependencies/dnf-packages.sh

@@ -3,6 +3,7 @@
 dnf install -y \
 	asciidoc \
 	binutils \
+	elfutils-libelf-devel \
 	gcc \
 	git \
 	glibc-devel \
@@ -18,6 +19,8 @@ dnf install -y \
 	libnet-devel \
 	libnl3-devel \
 	libselinux-devel \
+	libtraceevent-devel \
+	libtracefs-devel \
 	libuuid-devel \
 	make \
 	nftables \
@@ -27,9 +30,9 @@ dnf install -y \
 	protobuf-c-devel \
 	protobuf-compiler \
 	protobuf-devel \
-	python-devel \
 	python3-importlib-metadata \
 	python3-protobuf \
 	python3-pyyaml \
+	python-devel \
 	rubygem-asciidoctor \
 	xmlto

contrib/dependencies/pacman-packages.sh

@@ -15,8 +15,11 @@ pacman -Syu --noconfirm \
 	libbsd \
 	libcap \
 	libdrm \
+	libelf \
 	libnet \
 	libnl \
+	libtraceevent \
+	libtracefs \
 	nftables \
 	pkg-config \
 	protobuf \

test/zdtm/static/Makefile

@@ -290,6 +290,7 @@ TST_NOFILE	:=				\
 
 PKG_CONFIG ?= pkg-config
 pkg-config-check = $(shell sh -c '$(PKG_CONFIG) $(1) && echo y')
+pkg-config-atleast-version = $(shell sh -c '$(PKG_CONFIG) --atleast-version=$(2) $(1) && echo y')
 ifeq ($(call pkg-config-check,libbpf),y)
 TST_NOFILE	+=				\
 		bpf_hash			\
@@ -298,7 +299,10 @@ endif
 
 ifneq ($(ARCH),arm)
 ifneq ($(COMPAT_TEST),y)
-        TST_NOFILE += maps03
+	TST_NOFILE += maps03
+ifeq ($(call pkg-config-atleast-version,libtracefs,1.7),y)
+	TST_NOFILE += uprobes
+endif
 endif
 endif
 
@@ -727,6 +731,9 @@ sk-unix-listen04: CFLAGS += -DSK_UNIX_LISTEN02 -DSK_UNIX_LISTEN03
 
 cgroupv2_01:		LDLIBS += -pthread
 
+uprobes:		CFLAGS += $(call pkg-cflags, libtracefs libtraceevent)
+uprobes:		LDLIBS += $(call pkg-libs, libtracefs libelf)
+
 $(LIB):	force
 	$(Q) $(MAKE) -C $(LIBDIR)