mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
/* Support functions handling ptrace_scope.
|
|
Copyright (C) 2019-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <support/check.h>
|
|
#include <support/xstdio.h>
|
|
#include <support/xptrace.h>
|
|
|
|
int
|
|
support_ptrace_scope (void)
|
|
{
|
|
int ptrace_scope = -1;
|
|
|
|
#ifdef __linux__
|
|
/* YAMA may be not enabled. Otherwise it contains a value from 0 to 3:
|
|
- 0 classic ptrace permissions
|
|
- 1 restricted ptrace
|
|
- 2 admin-only attach
|
|
- 3 no attach */
|
|
FILE *f = fopen ("/proc/sys/kernel/yama/ptrace_scope", "r");
|
|
if (f != NULL)
|
|
{
|
|
TEST_COMPARE (fscanf (f, "%d", &ptrace_scope), 1);
|
|
xfclose (f);
|
|
}
|
|
#endif
|
|
|
|
return ptrace_scope;
|
|
}
|