ULTRA [ drganbuganapathi.com ]

Linux mail.drganbuganapathi.com 6.8.0-60-generic #63-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 15 19:04:15 UTC 2025 x86_64

Apache/2.4.58 (Ubuntu)

165.22.222.249 | Your IP: 216.73.216.201

Cant read [ /etc/named.conf ]

[ drwxr-xr-x ]

/ usr / share / doc / bpfcc-tools / examples / tracing /

Home Upload Mass Deface Mass Delete Back Connect Notify

kvm_hypercall.py

#!/usr/bin/python
#
# kvm_hypercall.py
#
# Demonstrates stateful kvm_entry and kvm_exit recording along with the
# associated hypercall when exit_reason is VMCALL. See kvm_hypercall.txt
# for usage
#
# REQUIRES: Linux 4.7+ (BPF_PROG_TYPE_TRACEPOINT support)
#
# Copyright (c) 2017 ShiftLeft Inc.
#
# Author(s):
#   Suchakrapani Sharma <suchakra@shiftleft.io>

from __future__ import print_function
from bcc import BPF

# load BPF program
b = BPF(text="""
#define EXIT_REASON 18
BPF_HASH(start, u8, u8);

TRACEPOINT_PROBE(kvm, kvm_exit) {
    u8 e = EXIT_REASON;
    u8 one = 1;
    if (args->exit_reason == EXIT_REASON) {
        bpf_trace_printk("KVM_EXIT exit_reason : %d\\n", args->exit_reason);
        start.update(&e, &one);
    }
    return 0;
}

TRACEPOINT_PROBE(kvm, kvm_entry) {
    u8 e = EXIT_REASON;
    u8 zero = 0;
    u8 *s = start.lookup(&e);
    if (s != NULL && *s == 1) {
        bpf_trace_printk("KVM_ENTRY vcpu_id : %u\\n", args->vcpu_id);
        start.update(&e, &zero);
    }
    return 0;
}

TRACEPOINT_PROBE(kvm, kvm_hypercall) {
    u8 e = EXIT_REASON;
    u8 zero = 0;
    u8 *s = start.lookup(&e);
    if (s != NULL && *s == 1) {
        bpf_trace_printk("HYPERCALL nr : %d\\n", args->nr);
    }
    return 0;
};
""")

# header
print("%-18s %-16s %-6s %s" % ("TIME(s)", "COMM", "PID", "EVENT"))

# format output
while 1:
    try:
        (task, pid, cpu, flags, ts, msg) = b.trace_fields()
    except ValueError:
        continue
    print("%-18.9f %-16s %-6d %s" % (ts, task, pid, msg))

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2024-07-10 02:06:54
..	dir	-	root/root	drwxr-xr-x	2024-07-10 02:06:54
CMakeLists.txt	text/plain	276 B	root/root	-rw-r--r--	2023-12-08 09:06:51
biolatpcts.py	text/x-python	3.23 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
biolatpcts_example.txt	text/plain	650 B	root/root	-rw-r--r--	2023-12-08 09:06:51
bitehist.py	text/x-python	1.36 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
bitehist_example.txt	text/plain	1.18 KB	root/root	-rw-r--r--	2023-12-08 09:06:51
dddos.py	text/x-python	3.73 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
dddos_example.txt	text/plain	2.06 KB	root/root	-rw-r--r--	2023-12-08 09:06:51
disksnoop.py	text/x-python	1.9 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
disksnoop_example.txt	text/plain	1.55 KB	root/root	-rw-r--r--	2023-12-08 09:06:51
hello_fields.py	text/x-python	679 B	root/root	-rwxr-xr-x	2023-12-08 09:06:51
hello_perf_output.py	text/x-python	1.24 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
hello_perf_output_using_ns.py	text/x-python	1.8 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
kvm_hypercall.py	text/x-python	1.48 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
kvm_hypercall.txt	text/plain	1.74 KB	root/root	-rw-r--r--	2023-12-08 09:06:51
mallocstacks.py	text/x-python	1.9 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
mysqld_query.py	text/x-python	1.66 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
mysqld_query_example.txt	text/plain	499 B	root/root	-rw-r--r--	2023-12-08 09:06:51
nflatency.py	text/x-python	6.07 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
nodejs_http_server.py	text/x-python	1.34 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
nodejs_http_server_example.txt	text/plain	276 B	root/root	-rw-r--r--	2023-12-08 09:06:51
stack_buildid_example.py	text/x-python	3.03 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
stacksnoop.py	text/x-python	3.18 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
stacksnoop_example.txt	text/plain	2.8 KB	root/root	-rw-r--r--	2023-12-08 09:06:51
strlen_count.py	text/x-python	1.3 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
strlen_hist.py	text/x-python	1.81 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
strlen_hist_ifunc.py	text/x-python	3.71 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
strlen_snoop.py	text/x-python	1.35 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
sync_timing.py	text/x-python	1.36 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
task_switch.c	text/x-c	499 B	root/root	-rw-r--r--	2023-12-08 09:06:51
task_switch.py	text/x-python	486 B	root/root	-rwxr-xr-x	2023-12-08 09:06:51
tcpv4connect.py	text/x-python	2.36 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
tcpv4connect_example.txt	text/plain	1.04 KB	root/root	-rw-r--r--	2023-12-08 09:06:51
trace_fields.py	text/x-python	589 B	root/root	-rwxr-xr-x	2023-12-08 09:06:51
trace_perf_output.py	text/x-python	1.56 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
undump.py	text/x-python	3.52 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
undump_example.txt	text/plain	886 B	root/root	-rw-r--r--	2023-12-08 09:06:51
urandomread-explicit.py	text/x-python	1.48 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
urandomread.py	text/x-python	1.01 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
urandomread_example.txt	text/plain	675 B	root/root	-rw-r--r--	2023-12-08 09:06:51
vfsreadlat.c	text/x-c	896 B	root/root	-rw-r--r--	2023-12-08 09:06:51
vfsreadlat.py	text/x-python	1.3 KB	root/root	-rwxr-xr-x	2023-12-08 09:06:51
vfsreadlat_example.txt	text/plain	3.53 KB	root/root	-rw-r--r--	2023-12-08 09:06:51