Do not use tail calls in execve sensor - #5353
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As a preparation for execve code sharing moving read_args to bpf_execve_event.h header, no function change. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
As a preparation for execve code sharing moving read_envs to bpf_execve_event.h header, no function change. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
As a preparation for execve code sharing moving read_path to bpf_execve_event.h header, no function change. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
As a preparation for execve code sharing moving read_cwd to bpf_execve_event.h header, no function change. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
As a preparation for execve code sharing moving read_execve_shared_info to bpf_execve_event.h header, no function change. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Adding execve_event_init function that initialize exeve event, no functional change. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Add execve_rate_check function that does the cgroup rate check, no functional change. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Add execve_send_event function that sends the execve event, no functional change. Note I added few small changes to keep linter/checkpatch happy. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Add execve program without tailcalls, it is used on v53, v511, v61 kernels and compiled instead of the tail-call object. Signed-off-by: Jiri Olsa <jolsa@kernel.org>
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The execve sensor fits into single program (on large kernel forward) which enable
us to use ring-buffer reserve api and get rid of per-cpu buffers (coming next).
Keeping tail-calls in execve program for 4.19 kernels.