diff options
| author | Alistair Delva <adelva@google.com> | 2020-08-20 16:14:23 -0700 |
|---|---|---|
| committer | Alistair Delva <adelva@google.com> | 2020-08-20 16:53:18 -0700 |
| commit | d9da10d147d633fdb6ec65e17ff4b8447419d83e (patch) | |
| tree | 8f93e8fdc2907f141e0924910bfec26669819f0b /platform-tracing.c | |
| parent | 22246b08952d746a7cc5a292570636cf4277598f (diff) | |
| parent | ecb2c02d994b3e21994f31a70ff911667c262f1f (diff) | |
Merge upstream-master into master
Commit ecb2c02d994b3e21994f31a70ff911667c262f1f upstream
This nearly (but not quite) corresponds to V_8_3_P1; subsequent
cherry-picks will correct this.
Bug: 162492243
Change-Id: I3c079d86435b7c25aefff4538dc89a3002b1e25b
Diffstat (limited to 'platform-tracing.c')
| -rw-r--r-- | platform-tracing.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/platform-tracing.c b/platform-tracing.c new file mode 100644 index 00000000..4c80a282 --- /dev/null +++ b/platform-tracing.c @@ -0,0 +1,51 @@ +/* + * 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 <sys/types.h> +#if defined(HAVE_SYS_PRCTL_H) +#include <sys/prctl.h> /* For prctl() and PR_SET_DUMPABLE */ +#endif +#ifdef HAVE_SYS_PTRACE_H +#include <sys/ptrace.h> +#endif +#ifdef HAVE_PRIV_H +#include <priv.h> /* For setpflags() and __PROC_PROTECT */ +#endif +#include <stdarg.h> + +#include "log.h" + +void +platform_disable_tracing(int strict) +{ +#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"); +#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"); +#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"); +#endif +} |