/usr/share/systemtap/runtime/autoconf-utrace-via-ftrace.c is in systemtap-common 1.7-1+deb7u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | #include <trace/events/sched.h>
#include <trace/events/syscalls.h>
#include <linux/ftrace.h>
// The utrace-less task_finder needs either:
// - 5 specific tracepoints
// - 4 specific tracepoints and ftrace_set_filter()
// Check scenario #2.
void __sched_process_fork(void *cb_data __attribute__((unused)),
struct task_struct *parent __attribute__((unused)),
struct task_struct *child __attribute__((unused)))
{
return;
}
void __sched_process_exit(void *cb_data __attribute__((unused)),
struct task_struct *task __attribute__((unused)))
{
return;
}
void __sys_enter(void *cb_data __attribute__ ((unused)),
struct pt_regs *regs __attribute__((unused)),
long id __attribute__((unused)))
{
return;
}
void __sys_exit(void *cb_data __attribute__ ((unused)),
struct pt_regs *regs __attribute__((unused)),
long ret __attribute__((unused)))
{
return;
}
struct ftrace_ops __ftrace_ops;
void __autoconf_func(void)
{
char *report_exec_name;
(void) register_trace_sched_process_fork(__sched_process_fork, NULL);
(void) register_trace_sched_process_exit(__sched_process_exit, NULL);
(void) register_trace_sys_enter(__sys_enter, NULL);
(void) register_trace_sys_exit(__sys_exit, NULL);
report_exec_name = "*" __stringify(proc_exec_connector);
ftrace_set_filter(&__ftrace_ops, report_exec_name,
strlen(report_exec_name), 1);
(void) register_ftrace_function(&__ftrace_ops);
}
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