Update timer handling to properly respect the it_value field

- Modify itimer_armed macro in restorer.c to consider it_value
- Simplify decode_itimer function in timer.c to use provided it_value
- Remove conditional logic that set it_value to interval

.circleci/config.yml

@@ -0,0 +1,27 @@
+version: 2.1
+jobs:
+  test-local-gcc:
+    machine:
+      image: default
+    working_directory: ~/criu
+    steps:
+      - checkout
+      - run:
+          name: "Test local with GCC"
+          command: sudo -E make -C scripts/ci local
+  test-local-clang:
+    machine:
+      image: default
+    working_directory: ~/criu
+    steps:
+      - checkout
+      - run:
+          name: "Test local with CLANG"
+          command: sudo -E make -C scripts/ci local CLANG=1
+
+workflows:
+  version: 2
+  builds:
+    jobs:
+      - test-local-gcc
+      - test-local-clang

.cirrus.yml

@@ -0,0 +1,130 @@
+task:
+  name: Vagrant Fedora based test (no VDSO)
+  environment:
+    HOME: "/root"
+    CIRRUS_WORKING_DIR: "/tmp/criu"
+
+  compute_engine_instance:
+    image_project: cirrus-images
+    image: family/docker-kvm
+    platform: linux
+    cpu: 4
+    memory: 16G
+    nested_virtualization: true
+
+  setup_script: |
+    scripts/ci/apt-install make gcc pkg-config git perl-modules iproute2 kmod wget cpu-checker
+    sudo kvm-ok
+    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
+  build_script: |
+    make -C scripts/ci vagrant-fedora-no-vdso
+
+task:
+  name: CentOS Stream 9 based test
+  environment:
+    HOME: "/root"
+    CIRRUS_WORKING_DIR: "/tmp/criu"
+
+  compute_engine_instance:
+    image_project: centos-cloud
+    image: family/centos-stream-9
+    platform: linux
+    cpu: 4
+    memory: 8G
+
+  setup_script: |
+    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
+    dnf config-manager --set-enabled crb # Same as CentOS 8 powertools
+    dnf -y install epel-release epel-next-release
+    dnf -y install --allowerasing asciidoc gcc git gnutls-devel libaio-devel libasan libcap-devel libnet-devel libnl3-devel libbsd-devel libselinux-devel make protobuf-c-devel protobuf-devel python-devel python-PyYAML python-protobuf python-junit_xml python3-importlib-metadata xmlto libdrm-devel
+    # The image has a too old version of nettle which does not work with gnutls.
+    # Just upgrade to the latest to make the error go away.
+    dnf -y upgrade nettle nettle-devel
+    systemctl stop sssd
+    # Even with selinux in permissive mode the selinux tests will be executed.
+    # The Cirrus CI user runs as a service from selinux point of view and is
+    # much more restricted than a normal shell (system_u:system_r:unconfined_service_t:s0).
+    # The test case above (vagrant-fedora-no-vdso) should run selinux tests in enforcing mode.
+    setenforce 0
+
+  build_script: |
+    make -C scripts/ci local SKIP_CI_PREP=1 CC=gcc CD_TO_TOP=1 ZDTM_OPTS="-x zdtm/static/socket-raw"
+
+task:
+  name: Vagrant Fedora Rawhide based test
+  environment:
+    HOME: "/root"
+    CIRRUS_WORKING_DIR: "/tmp/criu"
+
+  compute_engine_instance:
+    image_project: cirrus-images
+    image: family/docker-kvm
+    platform: linux
+    cpu: 4
+    memory: 16G
+    nested_virtualization: true
+
+  setup_script: |
+    scripts/ci/apt-install make gcc pkg-config git perl-modules iproute2 kmod wget cpu-checker
+    sudo kvm-ok
+    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
+  build_script: |
+    make -C scripts/ci vagrant-fedora-rawhide
+
+task:
+  name: Vagrant Fedora based test (non-root)
+  environment:
+    HOME: "/root"
+    CIRRUS_WORKING_DIR: "/tmp/criu"
+
+  compute_engine_instance:
+    image_project: cirrus-images
+    image: family/docker-kvm
+    platform: linux
+    cpu: 4
+    memory: 16G
+    nested_virtualization: true
+
+  setup_script: |
+    scripts/ci/apt-install make gcc pkg-config git perl-modules iproute2 kmod wget cpu-checker
+    sudo kvm-ok
+    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
+  build_script: |
+    make -C scripts/ci vagrant-fedora-non-root
+
+task:
+  name: aarch64 build GCC (native)
+  arm_container:
+    image: docker.io/library/ubuntu:jammy
+    cpu: 4
+    memory: 4G
+  script: uname -a
+  build_script: |
+    scripts/ci/apt-install make
+    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
+    make -C scripts/ci local
+
+task:
+  name: aarch64 build CLANG (native)
+  arm_container:
+    image: docker.io/library/ubuntu:jammy
+    cpu: 4
+    memory: 4G
+  script: uname -a
+  build_script: |
+    scripts/ci/apt-install make
+    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
+    make -C scripts/ci local CLANG=1
+
+task:
+  name: aarch64 Fedora Rawhide
+  arm_container:
+    image: registry.fedoraproject.org/fedora:rawhide
+    cpu: 4
+    memory: 4G
+  script: uname -a
+  build_script: |
+    scripts/ci/prepare-for-fedora-rawhide.sh
+    ln -sf /usr/include/google/protobuf/descriptor.proto images/google/protobuf/descriptor.proto
+    make -C scripts/ci/ local CC=gcc SKIP_CI_PREP=1 SKIP_CI_TEST=1 CD_TO_TOP=1
+    make -C test/zdtm -j 4