1 /* 2 * Copyright (c) 2016 Darren Tucker. All rights reserved. 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include "includes.h" 18 19 #include <sys/types.h> 20 #if defined(HAVE_SYS_PRCTL_H) 21 #include <sys/prctl.h> /* For prctl() and PR_SET_DUMPABLE */ 22 #endif 23 #ifdef HAVE_SYS_PTRACE_H 24 #include <sys/ptrace.h> 25 #endif 26 #ifdef HAVE_PRIV_H 27 #include <priv.h> /* For setpflags() and __PROC_PROTECT */ 28 #endif 29 #include <stdarg.h> 30 31 #include "log.h" 32 33 void 34 platform_disable_tracing(int strict) 35 { 36 #if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE) 37 /* Disable ptrace on Linux without sgid bit */ 38 if (prctl(PR_SET_DUMPABLE, 0) != 0 && strict) 39 fatal("unable to make the process undumpable"); 40 #endif 41 #if defined(HAVE_SETPFLAGS) && defined(__PROC_PROTECT) 42 /* On Solaris, we should make this process untraceable */ 43 if (setpflags(__PROC_PROTECT, 1) != 0 && strict) 44 fatal("unable to make the process untraceable"); 45 #endif 46 #ifdef PT_DENY_ATTACH 47 /* Mac OS X */ 48 if (ptrace(PT_DENY_ATTACH, 0, 0, 0) == -1 && strict) 49 fatal("unable to set PT_DENY_ATTACH"); 50 #endif 51 } 52
