Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Avoid cluttering console #46

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Avoid cluttering console #46

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
33 changes: 7 additions & 26 deletions chapter2/hello-tail.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
import ctypes as ct

program = r"""
BPF_PROG_ARRAY(syscall, 300);
BPF_PROG_ARRAY(syscall, 500);

int hello(struct bpf_raw_tracepoint_args *ctx) {
int opcode = ctx->args[1];
Expand Down Expand Up @@ -46,36 +46,17 @@
timer_fn = b.load_func("hello_timer", BPF.RAW_TRACEPOINT)

prog_array = b.get_table("syscall")

# Ignore all syscalls initially
for i in range(len(prog_array)):
prog_array[ct.c_int(i)] = ct.c_int(ignore_fn.fd)

# Only enable few syscalls which are of the interest
prog_array[ct.c_int(59)] = ct.c_int(exec_fn.fd)
prog_array[ct.c_int(222)] = ct.c_int(timer_fn.fd)
prog_array[ct.c_int(223)] = ct.c_int(timer_fn.fd)
prog_array[ct.c_int(224)] = ct.c_int(timer_fn.fd)
prog_array[ct.c_int(225)] = ct.c_int(timer_fn.fd)
prog_array[ct.c_int(226)] = ct.c_int(timer_fn.fd)

# Ignore some syscalls that come up a lot
prog_array[ct.c_int(21)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(22)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(25)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(29)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(56)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(57)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(63)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(64)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(66)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(72)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(73)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(79)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(98)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(101)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(115)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(131)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(134)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(135)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(139)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(172)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(233)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(280)] = ct.c_int(ignore_fn.fd)
prog_array[ct.c_int(291)] = ct.c_int(ignore_fn.fd)

b.trace_print()