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feat(scap-open): check btf support using scap-open #64

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Merged
poiana merged 1 commit into from
Jul 25, 2023
Merged

feat(scap-open): check btf support using scap-open #64

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1 change: 0 additions & 1 deletion ansible-playbooks/group_vars/all/vars.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,6 @@ machines:
- {name: "amazonlinux2-5.10", kernel: "therealbobo/amazonlinux2-kernel:5.10-x86_64", rootfs: "therealbobo/amazonlinux2-image:5.10-x86_64", arch: "x86_64"}
- {name: "amazonlinux2-5.15", kernel: "therealbobo/amazonlinux2-kernel:5.15-x86_64", rootfs: "therealbobo/amazonlinux2-image:5.15-x86_64", arch: "x86_64"}
- {name: "amazonlinux2-5.4", kernel: "therealbobo/amazonlinux2-kernel:5.4-x86_64", rootfs: "therealbobo/amazonlinux2-image:5.4-x86_64", arch: "x86_64"}
- {name: "archlinux-5.18", kernel: "therealbobo/archlinux-kernel:5.18-x86_64", rootfs: "therealbobo/archlinux-image:5.18-x86_64", arch: "x86_64"}
- {name: "archlinux-6.0", kernel: "therealbobo/archlinux-kernel:6.0-x86_64", rootfs: "therealbobo/archlinux-image:6.0-x86_64", arch: "x86_64"}
- {name: "centos-3.10", kernel: "therealbobo/centos-kernel:3.10-x86_64", rootfs: "therealbobo/centos-image:3.10-x86_64", arch: "x86_64"}
- {name: "centos-4.18", kernel: "therealbobo/centos-kernel:4.18-x86_64", rootfs: "therealbobo/centos-image:4.18-x86_64", arch: "x86_64"}
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29 changes: 6 additions & 23 deletions ansible-playbooks/roles/scap_open/tasks/main.yml
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Expand Up @@ -16,33 +16,16 @@

- name: Check Modern Bpf Support
block:
- name: Check BTF support
ansible.builtin.stat:
path: /sys/kernel/btf/vmlinux
register: btf_support

- name: Look up for BPF_MAP_TYPE_RINGBUF
ansible.builtin.lineinfile:
path: /usr/include/linux/bpf.h
regex: BPF_MAP_TYPE_RINGBUF*
state: absent
changed_when: false
check_mode: 'yes'
register: ringbuf_present

- name: Look up for BPF_PROG_TYPE_TRACING
ansible.builtin.lineinfile:
path: /usr/include/linux/bpf.h
regex: BPF_PROG_TYPE_TRACING*
state: absent
- name: Check modern-bpf support
ansible.builtin.command:
cmd: /tmp/scap-open --num_events 0 --modern_bpf
register: result
changed_when: false
check_mode: 'yes'
register: tracing_present

rescue:
- name: Enable Modern Bpf support
ansible.builtin.set_fact:
modern_bpf_supported: true
when: btf_support.stat.exists and ringbuf_present.found and tracing_present.found
when: result.rc != 95

- name: Check Old Bpf Support
block:
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