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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276// 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/sizes.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_u8(), 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_u8()); /* * 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, NULL, "in test %u at %td 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 void cmdline_test_next_arg_quoted_value(struct kunit *test){ char in[] = "foo=\"bar baz\" qux=1"; char *next, *param, *val;
next = next_arg(in, ¶m, &val); KUNIT_EXPECT_STREQ(test, param, "foo"); KUNIT_ASSERT_NOT_NULL(test, val); KUNIT_EXPECT_STREQ(test, val, "bar baz"); KUNIT_EXPECT_STREQ(test, next, "qux=1");
next = next_arg(next, ¶m, &val); KUNIT_EXPECT_STREQ(test, param, "qux"); KUNIT_ASSERT_NOT_NULL(test, val); KUNIT_EXPECT_STREQ(test, val, "1"); KUNIT_EXPECT_STREQ(test, next, "");}
static void cmdline_test_next_arg_bare_quote_regression(struct kunit *test){ char in[] = "foo=bar \""; char *next, *param, *val;
next = next_arg(in, ¶m, &val); KUNIT_EXPECT_STREQ(test, param, "foo"); KUNIT_ASSERT_NOT_NULL(test, val); KUNIT_EXPECT_STREQ(test, val, "bar"); KUNIT_EXPECT_STREQ(test, next, "\"");
/* This hits the i == 0 quoted-token case fixed by 9847f21225c4. */ next = next_arg(next, ¶m, &val); KUNIT_EXPECT_STREQ(test, param, ""); KUNIT_EXPECT_PTR_EQ(test, val, NULL); KUNIT_EXPECT_STREQ(test, next, "");}
static void cmdline_test_next_arg_mixed_tokens(struct kunit *test){ char in[] = "bbb= jjj kkk=\"a=b\""; char *next, *param, *val;
next = next_arg(in, ¶m, &val); KUNIT_EXPECT_STREQ(test, param, "bbb"); KUNIT_ASSERT_NOT_NULL(test, val); KUNIT_EXPECT_STREQ(test, val, ""); KUNIT_EXPECT_STREQ(test, next, "jjj kkk=\"a=b\"");
next = next_arg(next, ¶m, &val); KUNIT_EXPECT_STREQ(test, param, "jjj"); KUNIT_EXPECT_NULL(test, val); KUNIT_EXPECT_STREQ(test, next, "kkk=\"a=b\"");
next = next_arg(next, ¶m, &val); KUNIT_EXPECT_STREQ(test, param, "kkk"); KUNIT_ASSERT_NOT_NULL(test, val); KUNIT_EXPECT_STREQ(test, val, "a=b"); KUNIT_EXPECT_STREQ(test, next, "");}
struct cmdline_test_memparse_entry { const char *input; const char *unrecognized; unsigned long long result;};
static const struct cmdline_test_memparse_entry testdata[] = { { "0", "", 0ULL }, { "1", "", 1ULL }, { "a", "a", 0ULL }, { "k", "k", 0ULL }, { "E", "E", 0ULL }, { "0xb", "", 11ULL }, { "0xz", "x", 0ULL }, { "1234", "", 1234ULL }, { "04567", "", 2423ULL }, { "0x9876", "", 39030LL }, { "05678", "8", 375ULL }, { "0xabcdefz", "z", 11259375ULL }, { "0cdba", "c", 0ULL }, { "4K", "", SZ_4K }, { "0x10k@0xaaaabbbb", "@", SZ_16K }, { "32M", "", SZ_32M }, { "067m:foo", ":", 55 * SZ_1M }, { "2G;bar=baz", ";", SZ_2G }, { "07gz", "z", 7ULL * SZ_1G }, { "3T+data", "+", 3 * SZ_1T }, { "04t,ro", ",", SZ_4T }, { "012p", "", 11258999068426240ULL }, { "7P,sync", ",", 7881299347898368ULL }, { "0x2e", "", 46ULL }, { "2E and more", " ", 2305843009213693952ULL }, { "18446744073709551615", "", ULLONG_MAX }, { "0xffffffffffffffff0", "", ULLONG_MAX }, { "1111111111111111111T", "", ULLONG_MAX }, { "222222222222222222222G", "", ULLONG_MAX }, { "3333333333333333333333M", "", ULLONG_MAX },};
static void cmdline_test_memparse(struct kunit *test){ const struct cmdline_test_memparse_entry *e; unsigned long long ret; char *retptr;
for (e = testdata; e < testdata + ARRAY_SIZE(testdata); e++) { ret = memparse(e->input, &retptr); KUNIT_EXPECT_EQ_MSG(test, ret, e->result, " when parsing '%s'", e->input); KUNIT_EXPECT_EQ_MSG(test, *retptr, *e->unrecognized, " when parsing '%s'", e->input); }}
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), KUNIT_CASE(cmdline_test_next_arg_quoted_value), KUNIT_CASE(cmdline_test_next_arg_bare_quote_regression), KUNIT_CASE(cmdline_test_next_arg_mixed_tokens), KUNIT_CASE(cmdline_test_memparse), {}};
static struct kunit_suite cmdline_test_suite = { .name = "cmdline", .test_cases = cmdline_test_cases,};kunit_test_suite(cmdline_test_suite);
MODULE_DESCRIPTION("Test cases for API provided by cmdline.c");MODULE_LICENSE("GPL");