mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
![Andy Shevchenko](/assets/img/avatar_default.png)
Allow get_options() to take 0 as a number of integers parameter to validate the input. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
156 lines
4.2 KiB
C
156 lines
4.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Test cases for API provided by cmdline.c
|
|
*/
|
|
|
|
#include <kunit/test.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/random.h>
|
|
#include <linux/string.h>
|
|
|
|
static const char *cmdline_test_strings[] = {
|
|
"\"\"", "" , "=" , "\"-", "," , "-," , ",-" , "-" ,
|
|
"+," , "--", ",,", "''" , "\"\",", "\",\"", "-\"\"", "\"",
|
|
};
|
|
|
|
static const int cmdline_test_values[] = {
|
|
1, 1, 1, 1, 2, 3, 2, 3,
|
|
1, 3, 2, 1, 1, 1, 3, 1,
|
|
};
|
|
|
|
static_assert(ARRAY_SIZE(cmdline_test_strings) == ARRAY_SIZE(cmdline_test_values));
|
|
|
|
static const char *cmdline_test_range_strings[] = {
|
|
"-7" , "--7" , "-1-2" , "7--9",
|
|
"7-" , "-7--9", "7-9," , "9-7" ,
|
|
"5-a", "a-5" , "5-8" , ",8-5",
|
|
"+,1", "-,4" , "-3,0-1,6", "4,-" ,
|
|
" +2", " -9" , "0-1,-3,6", "- 9" ,
|
|
};
|
|
|
|
static const int cmdline_test_range_values[][16] = {
|
|
{ 1, -7, }, { 0, -0, }, { 4, -1, 0, +1, 2, }, { 0, 7, },
|
|
{ 0, +7, }, { 0, -7, }, { 3, +7, 8, +9, 0, }, { 0, 9, },
|
|
{ 0, +5, }, { 0, -0, }, { 4, +5, 6, +7, 8, }, { 0, 0, },
|
|
{ 0, +0, }, { 0, -0, }, { 4, -3, 0, +1, 6, }, { 1, 4, },
|
|
{ 0, +0, }, { 0, -0, }, { 4, +0, 1, -3, 6, }, { 0, 0, },
|
|
};
|
|
|
|
static_assert(ARRAY_SIZE(cmdline_test_range_strings) == ARRAY_SIZE(cmdline_test_range_values));
|
|
|
|
static void cmdline_do_one_test(struct kunit *test, const char *in, int rc, int offset)
|
|
{
|
|
const char *fmt = "Pattern: %s";
|
|
const char *out = in;
|
|
int dummy;
|
|
int ret;
|
|
|
|
ret = get_option((char **)&out, &dummy);
|
|
|
|
KUNIT_EXPECT_EQ_MSG(test, ret, rc, fmt, in);
|
|
KUNIT_EXPECT_PTR_EQ_MSG(test, out, in + offset, fmt, in);
|
|
}
|
|
|
|
static void cmdline_test_noint(struct kunit *test)
|
|
{
|
|
unsigned int i = 0;
|
|
|
|
do {
|
|
const char *str = cmdline_test_strings[i];
|
|
int rc = 0;
|
|
int offset;
|
|
|
|
/* Only first and leading '-' will advance the pointer */
|
|
offset = !!(*str == '-');
|
|
cmdline_do_one_test(test, str, rc, offset);
|
|
} while (++i < ARRAY_SIZE(cmdline_test_strings));
|
|
}
|
|
|
|
static void cmdline_test_lead_int(struct kunit *test)
|
|
{
|
|
unsigned int i = 0;
|
|
char in[32];
|
|
|
|
do {
|
|
const char *str = cmdline_test_strings[i];
|
|
int rc = cmdline_test_values[i];
|
|
int offset;
|
|
|
|
sprintf(in, "%u%s", get_random_int() % 256, str);
|
|
/* Only first '-' after the number will advance the pointer */
|
|
offset = strlen(in) - strlen(str) + !!(rc == 2);
|
|
cmdline_do_one_test(test, in, rc, offset);
|
|
} while (++i < ARRAY_SIZE(cmdline_test_strings));
|
|
}
|
|
|
|
static void cmdline_test_tail_int(struct kunit *test)
|
|
{
|
|
unsigned int i = 0;
|
|
char in[32];
|
|
|
|
do {
|
|
const char *str = cmdline_test_strings[i];
|
|
/* When "" or "-" the result will be valid integer */
|
|
int rc = strcmp(str, "") ? (strcmp(str, "-") ? 0 : 1) : 1;
|
|
int offset;
|
|
|
|
sprintf(in, "%s%u", str, get_random_int() % 256);
|
|
/*
|
|
* Only first and leading '-' not followed by integer
|
|
* will advance the pointer.
|
|
*/
|
|
offset = rc ? strlen(in) : !!(*str == '-');
|
|
cmdline_do_one_test(test, in, rc, offset);
|
|
} while (++i < ARRAY_SIZE(cmdline_test_strings));
|
|
}
|
|
|
|
static void cmdline_do_one_range_test(struct kunit *test, const char *in,
|
|
unsigned int n, const int *e)
|
|
{
|
|
unsigned int i;
|
|
int r[16];
|
|
int *p;
|
|
|
|
memset(r, 0, sizeof(r));
|
|
get_options(in, ARRAY_SIZE(r), r);
|
|
KUNIT_EXPECT_EQ_MSG(test, r[0], e[0], "in test %u (parsed) expected %d numbers, got %d",
|
|
n, e[0], r[0]);
|
|
for (i = 1; i < ARRAY_SIZE(r); i++)
|
|
KUNIT_EXPECT_EQ_MSG(test, r[i], e[i], "in test %u at %u", n, i);
|
|
|
|
memset(r, 0, sizeof(r));
|
|
get_options(in, 0, r);
|
|
KUNIT_EXPECT_EQ_MSG(test, r[0], e[0], "in test %u (validated) expected %d numbers, got %d",
|
|
n, e[0], r[0]);
|
|
|
|
p = memchr_inv(&r[1], 0, sizeof(r) - sizeof(r[0]));
|
|
KUNIT_EXPECT_PTR_EQ_MSG(test, p, (int *)0, "in test %u at %u out of bound", n, p - r);
|
|
}
|
|
|
|
static void cmdline_test_range(struct kunit *test)
|
|
{
|
|
unsigned int i = 0;
|
|
|
|
do {
|
|
const char *str = cmdline_test_range_strings[i];
|
|
const int *e = cmdline_test_range_values[i];
|
|
|
|
cmdline_do_one_range_test(test, str, i, e);
|
|
} while (++i < ARRAY_SIZE(cmdline_test_range_strings));
|
|
}
|
|
|
|
static struct kunit_case cmdline_test_cases[] = {
|
|
KUNIT_CASE(cmdline_test_noint),
|
|
KUNIT_CASE(cmdline_test_lead_int),
|
|
KUNIT_CASE(cmdline_test_tail_int),
|
|
KUNIT_CASE(cmdline_test_range),
|
|
{}
|
|
};
|
|
|
|
static struct kunit_suite cmdline_test_suite = {
|
|
.name = "cmdline",
|
|
.test_cases = cmdline_test_cases,
|
|
};
|
|
kunit_test_suite(cmdline_test_suite);
|
|
|
|
MODULE_LICENSE("GPL");
|