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support/support_ptrace.c
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Support functions handling ptrace_scope. Copyright (C) 2019-2026 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; }