mirror of git://sourceware.org/git/glibc.git
123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
/* Fortify tests for syslog interface.
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Copyright (C) 2023-2025 Free Software Foundation, Inc.
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Copyright The GNU Toolchain Authors.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdarg.h>
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#include <setjmp.h>
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#include <syslog.h>
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#include <string.h>
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#include <unistd.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <support/capture_subprocess.h>
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static const char *str2 = "F";
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static char buf2[10] = "%s";
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static volatile int chk_fail_ok;
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static jmp_buf chk_fail_buf;
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static void
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handler (int sig)
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{
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if (chk_fail_ok)
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{
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chk_fail_ok = 0;
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longjmp (chk_fail_buf, 1);
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}
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else
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_exit (127);
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}
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#define CHK_FAIL_START \
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chk_fail_ok = 1; \
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if (! setjmp (chk_fail_buf)) \
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{
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#define CHK_FAIL_END \
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chk_fail_ok = 0; \
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FAIL ("not supposed to reach here"); \
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}
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static void
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call_vsyslog (int priority, const char *format, ...)
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{
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va_list va;
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va_start (va, format);
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vsyslog (priority, format, va);
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va_end (va);
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}
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static void
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run_syslog_chk (void *closure)
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{
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int n1;
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CHK_FAIL_START
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syslog (LOG_USER | LOG_DEBUG, buf2, str2, &n1, str2, &n1);
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CHK_FAIL_END
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}
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static void
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run_vsyslog_chk (void *closure)
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{
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int n1;
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CHK_FAIL_START
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call_vsyslog (LOG_USER | LOG_DEBUG, buf2, str2, &n1, str2, &n1);
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CHK_FAIL_END
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}
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static int
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do_test (void)
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{
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set_fortify_handler (handler);
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int n1, n2;
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n1 = n2 = 0;
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syslog (LOG_USER | LOG_DEBUG, "%s%n%s%n", str2, &n1, str2, &n2);
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TEST_COMPARE (n1, 1);
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TEST_COMPARE (n2, 2);
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n1 = n2 = 0;
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call_vsyslog (LOG_USER | LOG_DEBUG, "%s%n%s%n", str2, &n1, str2, &n2);
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TEST_COMPARE (n1, 1);
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TEST_COMPARE (n2, 2);
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strcpy (buf2 + 2, "%n%s%n");
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/* The wrapper tests need to be in a subprocess because the abort called by
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printf does not unlock the internal syslog lock. */
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{
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struct support_capture_subprocess result
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= support_capture_subprocess (run_syslog_chk, NULL);
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support_capture_subprocess_check (&result, "syslog", 0, sc_allow_stderr);
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support_capture_subprocess_free (&result);
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}
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{
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struct support_capture_subprocess result
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= support_capture_subprocess (run_vsyslog_chk, NULL);
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support_capture_subprocess_check (&result, "syslog", 0, sc_allow_stderr);
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support_capture_subprocess_free (&result);
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}
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return 0;
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}
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#include <support/test-driver.c>
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