FM / bpf

/usr/share/systemtap/tapset/bpf

Name	Size	Mode	Actions
aux_syscalls.stp	909	0644	edit dl rm
compatdefs.stp	203	0644	edit dl rm
context.stp	6039	0644	edit dl rm
conversions.stp	4727	0644	edit dl rm
exit.stp	2583	0644	edit dl rm
logging.stp	1463	0644	edit dl rm
syscalls.stpm	213	0644	edit dl rm
syscall_any.stp	1569	0644	edit dl rm
syscall_num_arm.stp	38588	0644	edit dl rm
syscall_num_arm64.stp	86596	0644	edit dl rm
syscall_num_mips.stp	110534	0644	edit dl rm
syscall_num_powerpc.stp	71086	0644	edit dl rm
syscall_num_riscv.stp	48422	0644	edit dl rm
syscall_num_s390.stp	68068	0644	edit dl rm
syscall_num_x86_64.stp	65658	0644	edit dl rm
syscall_table.stp	1491	0644	edit dl rm
target.stp	1403	0644	edit dl rm
task.stp	583	0644	edit dl rm
time.stp	539	0644	edit dl rm
timestamp_gtod.stp	2178	0644	edit dl rm
uconversions.stp	8014	0644	edit dl rm

Edit: /usr/share/systemtap/tapset/bpf/logging.stp (1463B)

function log (msg:string) { /* unprivileged */ /* bpf */
  printf("%s\n", msg)
}

function warn (msg:string) { /* unprivileged */ /* bpf */
  // TODO: _stp_warn intelligently determines whether msg has a newline
  printf("WARNING: %s\n", msg)
}

function exit () { /* unprivileged */ /* bpf */
  _set_exit_status()
  _send_exit_msg()
}

%(systemtap_v >= "4.0" %?
function abort () { /* unprivileged */ /* bpf */
  // TODO PR27820: There may be a delay between setting exit status
  // and stapbpf.cxx disabling the probes. This could be solved
  // at the cost of setting a global var and adding a check to the
  // start of every probe.
  _set_exit_status()
  _send_exit_msg()
  _terminate()
}
%)

function error (msg:string) { /* unprivileged */ /* bpf */
  // If error is called within a try block, the instruction flow
  // will switch to the corresponding catch block.
  _jump_to_catch(msg)

// Execution will reach here if error was called outside a try
  // block. In this case, the error message will be stored for
  // printing and the error status will be set.
  _register_error(msg)

// Short-circuit the program to its exit.
  _terminate()
}

// logging tapset -- BPF version // Copyright (C) 2005-2021 Red Hat Inc. // // This file is part of systemtap, and is free software. You can // redistribute it and/or modify it under the terms of the GNU General // Public License (GPL); either version 2, or (at your option) any // later version. function log (msg:string) { /* unprivileged */ /* bpf */ printf("%s\n", msg) } function warn (msg:string) { /* unprivileged */ /* bpf */ // TODO: _stp_warn intelligently determines whether msg has a newline printf("WARNING: %s\n", msg) } function exit () { /* unprivileged */ /* bpf */ _set_exit_status() _send_exit_msg() } %(systemtap_v >= "4.0" %? function abort () { /* unprivileged */ /* bpf */ // TODO PR27820: There may be a delay between setting exit status // and stapbpf.cxx disabling the probes. This could be solved // at the cost of setting a global var and adding a check to the // start of every probe. _set_exit_status() _send_exit_msg() _terminate() } %) function error (msg:string) { /* unprivileged */ /* bpf */ // If error is called within a try block, the instruction flow // will switch to the corresponding catch block. _jump_to_catch(msg) // Execution will reach here if error was called outside a try // block. In this case, the error message will be stored for // printing and the error status will be set. _register_error(msg) // Short-circuit the program to its exit. _terminate() }