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cheri: stdio-common: Add test for %#p printf modifier
Testcase for printing capabilities.
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@ -68,3 +68,9 @@ endif
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ifeq ($(subdir),malloc)
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sysdep_malloc_debug_routines = __mtag_tag_zero_region __mtag_tag_region
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endif
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ifeq (yes,$(aarch64-purecap))
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ifeq ($(subdir),stdio-common)
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tests += tst-printf-cap
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endif
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endif
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95
sysdeps/aarch64/morello/tst-printf-cap.c
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95
sysdeps/aarch64/morello/tst-printf-cap.c
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@ -0,0 +1,95 @@
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/* Check printf for capabilities functionality.
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Copyright (C) 2022 Free Software Foundation, Inc.
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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 <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <support/check.h>
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#include <support/xunistd.h>
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#include <support/test-driver.h>
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int check_match (char *ptr, const char *pattern)
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{
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char str[100];
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sprintf (str, "%#p", ptr);
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verbose_printf ("Test permission \"%s\" in \"%s\".\n", pattern, str);
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if (!strstr(str, pattern))
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{
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printf ("FAIL: permission \"%s\" in \"%s\".\n", pattern, str);
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return 1;
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}
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return 0;
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}
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int check_bounds (char *ptr, uint64_t len)
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{
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char str[100];
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char u_bound[100];
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sprintf (str, "%#p", ptr);
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sprintf (u_bound, "%p", (ptr + len));
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verbose_printf ("Test bounds \"%s\" in \"%s\"\n", u_bound, str);
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if (!strstr (str, u_bound))
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{
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printf ("FAIL: bounds \"%s\" in \"%s\"\n", u_bound, str);
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return 1;
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}
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return 0;
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}
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static void *
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map (int prot)
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{
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return xmmap (0, 16, prot, MAP_ANONYMOUS | MAP_PRIVATE, -1);
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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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static const int x;
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static int y;
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void *r_global = (void *) &x;
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void *rw_global = &y;
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void *rx_global = (void *) do_test;
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void *rw_malloc = malloc (16);
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void *none_map = map (PROT_NONE);
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void *r_map = map (PROT_READ);
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void *rw_map = map (PROT_READ | PROT_WRITE);
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void *rx_map = map (PROT_READ | PROT_EXEC);
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void *rwx_map = map (PROT_READ | PROT_WRITE | PROT_EXEC);
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int ret = 0;
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/* Test permissions. */
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ret += check_match (none_map, "[,");
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ret += check_match (r_global, "[rR,");
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ret += check_match (r_map, "[rR,");
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ret += check_match (rw_global, "[rwRW,");
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ret += check_match (rw_malloc, "[rwRW,");
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ret += check_match (rw_map, "[rwRW,");
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ret += check_match (rx_global, "[rxRE,");
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ret += check_match (rx_map, "[rxRE,");
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ret += check_match (rwx_map, "[rwxRWE,");
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/* Test bounds. */
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ret += check_bounds (rw_malloc, 16);
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return ret;
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}
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#include <support/test-driver.c>
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