From 25505898530a333011f4fd5cbc841ad6b26c089c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:40:04 +0200 Subject: Adding upstream version 1:9.2p1. Signed-off-by: Daniel Baumann --- platform-tracing.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 platform-tracing.c (limited to 'platform-tracing.c') diff --git a/platform-tracing.c b/platform-tracing.c new file mode 100644 index 0000000..650c7e5 --- /dev/null +++ b/platform-tracing.c @@ -0,0 +1,76 @@ +/* + * Copyright (c) 2016 Darren Tucker. All rights reserved. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "includes.h" + +#include +#ifdef HAVE_SYS_PROCCTL_H +#include +#endif +#if defined(HAVE_SYS_PRCTL_H) +#include /* For prctl() and PR_SET_DUMPABLE */ +#endif +#ifdef HAVE_SYS_PTRACE_H +#include +#endif +#ifdef HAVE_PRIV_H +#include /* For setpflags() and __PROC_PROTECT */ +#endif +#include +#include +#include +#include + +#include "log.h" + +void +platform_disable_tracing(int strict) +{ +#if defined(HAVE_PROCCTL) && defined(PROC_TRACE_CTL) + /* On FreeBSD, we should make this process untraceable */ + int disable_trace = PROC_TRACE_CTL_DISABLE; + + /* + * On FreeBSD, we should make this process untraceable. + * pid=0 means "this process" but some older kernels do not + * understand that so retry with our own pid before failing. + */ + if (procctl(P_PID, 0, PROC_TRACE_CTL, &disable_trace) == 0) + return; + if (procctl(P_PID, getpid(), PROC_TRACE_CTL, &disable_trace) == 0) + return; + if (strict) + fatal("unable to make the process untraceable: %s", + strerror(errno)); +#endif +#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE) + /* Disable ptrace on Linux without sgid bit */ + if (prctl(PR_SET_DUMPABLE, 0) != 0 && strict) + fatal("unable to make the process undumpable: %s", + strerror(errno)); +#endif +#if defined(HAVE_SETPFLAGS) && defined(__PROC_PROTECT) + /* On Solaris, we should make this process untraceable */ + if (setpflags(__PROC_PROTECT, 1) != 0 && strict) + fatal("unable to make the process untraceable: %s", + strerror(errno)); +#endif +#ifdef PT_DENY_ATTACH + /* Mac OS X */ + if (ptrace(PT_DENY_ATTACH, 0, 0, 0) == -1 && strict) + fatal("unable to set PT_DENY_ATTACH: %s", strerror(errno)); +#endif +} -- cgit v1.2.3