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/*
* unit test helper for crypt_wipe API call
*
* Copyright (C) 2022-2024 Milan Broz
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <sys/stat.h>
#include "libcryptsetup.h"
const char *test_file;
uint64_t test_offset, test_length, test_block;
uint32_t flags;
crypt_wipe_pattern pattern;
static void usage(void)
{
fprintf(stderr, "Use:\tunit-wipe file/device zero|random|special offset length bsize [no-dio].\n");
}
static bool parse_u64(const char *arg, uint64_t *u64)
{
unsigned long long ull;
char *end;
ull = strtoull(arg, &end, 10);
if (*end || !*arg || errno == ERANGE)
return false;
if (ull % 512)
return false;
*u64 = ull;
return true;
}
static bool parse_input_params(int argc, char **argv)
{
struct stat st;
if (argc < 6 || argc > 7) {
usage();
return false;
}
if (stat(argv[1], &st)) {
fprintf(stderr, "File/device %s is missing?\n", argv[1]);
return false;
}
test_file = argv[1];
if (!strcmp(argv[2], "random"))
pattern = CRYPT_WIPE_RANDOM;
else if (!strcmp(argv[2], "zero"))
pattern = CRYPT_WIPE_ZERO;
else if (!strcmp(argv[2], "special"))
pattern = CRYPT_WIPE_SPECIAL;
else {
fprintf(stderr, "Wrong pattern specification.\n");
return false;
}
if (!parse_u64(argv[3], &test_offset)) {
fprintf(stderr, "Wrong offset specification.\n");
return false;
}
if (!parse_u64(argv[4], &test_length)) {
fprintf(stderr, "Wrong length specification.\n");
return false;
}
if (!parse_u64(argv[5], &test_block)) {
fprintf(stderr, "Wrong block length specification.\n");
return false;
}
if (argc > 6) {
if (!strcmp(argv[6], "no-dio"))
flags = CRYPT_WIPE_NO_DIRECT_IO;
else {
fprintf(stderr, "Wrong flags specification.\n");
return false;
}
}
return true;
}
int main(int argc, char **argv)
{
struct crypt_device *cd;
int r;
#ifndef NO_CRYPTSETUP_PATH
if (getenv("CRYPTSETUP_PATH")) {
printf("Cannot run this test with CRYPTSETUP_PATH set.\n");
exit(77);
}
#endif
if (!parse_input_params(argc, argv))
return EXIT_FAILURE;
r = crypt_init(&cd, NULL);
if (r < 0) {
fprintf(stderr, "Context init failure %i.\n", r);
return EXIT_FAILURE;
}
r = crypt_wipe(cd, test_file, pattern, test_offset, test_length,
test_block, flags, NULL, NULL);
crypt_free(cd);
if (r)
fprintf(stderr, "Failure %i\n", r);
return r == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
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