diff options
| -rw-r--r-- | include/qemu/cutils.h | 4 | ||||
| -rw-r--r-- | tests/test-cutils.c | 657 | ||||
| -rw-r--r-- | util/cutils.c | 109 |
3 files changed, 770 insertions, 0 deletions
diff --git a/include/qemu/cutils.h b/include/qemu/cutils.h index f0878ea..a663340 100644 --- a/include/qemu/cutils.h +++ b/include/qemu/cutils.h @@ -126,6 +126,10 @@ time_t mktimegm(struct tm *tm); int qemu_fdatasync(int fd); int fcntl_setfl(int fd, int flag); int qemu_parse_fd(const char *param); +int qemu_strtoi(const char *nptr, const char **endptr, int base, + int *result); +int qemu_strtoui(const char *nptr, const char **endptr, int base, + unsigned int *result); int qemu_strtol(const char *nptr, const char **endptr, int base, long *result); int qemu_strtoul(const char *nptr, const char **endptr, int base, diff --git a/tests/test-cutils.c b/tests/test-cutils.c index f64a49b..64a489c 100644 --- a/tests/test-cutils.c +++ b/tests/test-cutils.c @@ -223,6 +223,583 @@ static void test_parse_uint_full_correct(void) g_assert_cmpint(i, ==, 123); } +static void test_qemu_strtoi_correct(void) +{ + const char *str = "12345 foo"; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 12345); + g_assert(endptr == str + 5); +} + +static void test_qemu_strtoi_null(void) +{ + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(NULL, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == NULL); +} + +static void test_qemu_strtoi_empty(void) +{ + const char *str = ""; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == str); +} + +static void test_qemu_strtoi_whitespace(void) +{ + const char *str = " \t "; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == str); +} + +static void test_qemu_strtoi_invalid(void) +{ + const char *str = " xxxx \t abc"; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == str); +} + +static void test_qemu_strtoi_trailing(void) +{ + const char *str = "123xxx"; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 123); + g_assert(endptr == str + 3); +} + +static void test_qemu_strtoi_octal(void) +{ + const char *str = "0123"; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 8, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 0123); + g_assert(endptr == str + strlen(str)); + + res = 999; + endptr = &f; + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 0123); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoi_decimal(void) +{ + const char *str = "0123"; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 10, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 123); + g_assert(endptr == str + strlen(str)); + + str = "123"; + res = 999; + endptr = &f; + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 123); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoi_hex(void) +{ + const char *str = "0123"; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 16, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 0x123); + g_assert(endptr == str + strlen(str)); + + str = "0x123"; + res = 999; + endptr = &f; + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 0x123); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoi_max(void) +{ + char *str = g_strdup_printf("%d", INT_MAX); + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, INT_MAX); + g_assert(endptr == str + strlen(str)); + g_free(str); +} + +static void test_qemu_strtoi_overflow(void) +{ + char *str = g_strdup_printf("%lld", (long long)INT_MAX + 1ll); + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -ERANGE); + g_assert_cmpint(res, ==, INT_MAX); + g_assert(endptr == str + strlen(str)); + g_free(str); +} + +static void test_qemu_strtoi_underflow(void) +{ + char *str = g_strdup_printf("%lld", (long long)INT_MIN - 1ll); + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -ERANGE); + g_assert_cmpint(res, ==, INT_MIN); + g_assert(endptr == str + strlen(str)); + g_free(str); +} + +static void test_qemu_strtoi_negative(void) +{ + const char *str = " \t -321"; + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, -321); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoi_full_correct(void) +{ + const char *str = "123"; + int res = 999; + int err; + + err = qemu_strtoi(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, 123); +} + +static void test_qemu_strtoi_full_null(void) +{ + char f = 'X'; + const char *endptr = &f; + int res = 999; + int err; + + err = qemu_strtoi(NULL, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == NULL); +} + +static void test_qemu_strtoi_full_empty(void) +{ + const char *str = ""; + int res = 999L; + int err; + + err = qemu_strtoi(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); +} + +static void test_qemu_strtoi_full_negative(void) +{ + const char *str = " \t -321"; + int res = 999; + int err; + + err = qemu_strtoi(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, -321); +} + +static void test_qemu_strtoi_full_trailing(void) +{ + const char *str = "123xxx"; + int res; + int err; + + err = qemu_strtoi(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); +} + +static void test_qemu_strtoi_full_max(void) +{ + char *str = g_strdup_printf("%d", INT_MAX); + int res; + int err; + + err = qemu_strtoi(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpint(res, ==, INT_MAX); + g_free(str); +} + +static void test_qemu_strtoui_correct(void) +{ + const char *str = "12345 foo"; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, 12345); + g_assert(endptr == str + 5); +} + +static void test_qemu_strtoui_null(void) +{ + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(NULL, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == NULL); +} + +static void test_qemu_strtoui_empty(void) +{ + const char *str = ""; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == str); +} + +static void test_qemu_strtoui_whitespace(void) +{ + const char *str = " \t "; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == str); +} + +static void test_qemu_strtoui_invalid(void) +{ + const char *str = " xxxx \t abc"; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); + g_assert(endptr == str); +} + +static void test_qemu_strtoui_trailing(void) +{ + const char *str = "123xxx"; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, 123); + g_assert(endptr == str + 3); +} + +static void test_qemu_strtoui_octal(void) +{ + const char *str = "0123"; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 8, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, 0123); + g_assert(endptr == str + strlen(str)); + + res = 999; + endptr = &f; + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, 0123); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoui_decimal(void) +{ + const char *str = "0123"; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 10, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, 123); + g_assert(endptr == str + strlen(str)); + + str = "123"; + res = 999; + endptr = &f; + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, 123); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoui_hex(void) +{ + const char *str = "0123"; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 16, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmphex(res, ==, 0x123); + g_assert(endptr == str + strlen(str)); + + str = "0x123"; + res = 999; + endptr = &f; + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmphex(res, ==, 0x123); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoui_max(void) +{ + char *str = g_strdup_printf("%u", UINT_MAX); + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmphex(res, ==, UINT_MAX); + g_assert(endptr == str + strlen(str)); + g_free(str); +} + +static void test_qemu_strtoui_overflow(void) +{ + char *str = g_strdup_printf("%lld", (long long)UINT_MAX + 1ll); + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -ERANGE); + g_assert_cmphex(res, ==, UINT_MAX); + g_assert(endptr == str + strlen(str)); + g_free(str); +} + +static void test_qemu_strtoui_underflow(void) +{ + char *str = g_strdup_printf("%lld", (long long)INT_MIN - 1ll); + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, -ERANGE); + g_assert_cmpuint(res, ==, (unsigned int)-1); + g_assert(endptr == str + strlen(str)); + g_free(str); +} + +static void test_qemu_strtoui_negative(void) +{ + const char *str = " \t -321"; + char f = 'X'; + const char *endptr = &f; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, &endptr, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, (unsigned int)-321); + g_assert(endptr == str + strlen(str)); +} + +static void test_qemu_strtoui_full_correct(void) +{ + const char *str = "123"; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, 123); +} + +static void test_qemu_strtoui_full_null(void) +{ + unsigned int res = 999; + int err; + + err = qemu_strtoui(NULL, NULL, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); +} + +static void test_qemu_strtoui_full_empty(void) +{ + const char *str = ""; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); +} +static void test_qemu_strtoui_full_negative(void) +{ + const char *str = " \t -321"; + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, NULL, 0, &res); + g_assert_cmpint(err, ==, 0); + g_assert_cmpuint(res, ==, (unsigned int)-321); +} + +static void test_qemu_strtoui_full_trailing(void) +{ + const char *str = "123xxx"; + unsigned int res; + int err; + + err = qemu_strtoui(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, -EINVAL); +} + +static void test_qemu_strtoui_full_max(void) +{ + char *str = g_strdup_printf("%u", UINT_MAX); + unsigned int res = 999; + int err; + + err = qemu_strtoui(str, NULL, 0, &res); + + g_assert_cmpint(err, ==, 0); + g_assert_cmphex(res, ==, UINT_MAX); + g_free(str); +} + static void test_qemu_strtol_correct(void) { const char *str = "12345 foo"; @@ -1612,6 +2189,86 @@ int main(int argc, char **argv) g_test_add_func("/cutils/parse_uint_full/correct", test_parse_uint_full_correct); + /* qemu_strtoi() tests */ + g_test_add_func("/cutils/qemu_strtoi/correct", + test_qemu_strtoi_correct); + g_test_add_func("/cutils/qemu_strtoi/null", + test_qemu_strtoi_null); + g_test_add_func("/cutils/qemu_strtoi/empty", + test_qemu_strtoi_empty); + g_test_add_func("/cutils/qemu_strtoi/whitespace", + test_qemu_strtoi_whitespace); + g_test_add_func("/cutils/qemu_strtoi/invalid", + test_qemu_strtoi_invalid); + g_test_add_func("/cutils/qemu_strtoi/trailing", + test_qemu_strtoi_trailing); + g_test_add_func("/cutils/qemu_strtoi/octal", + test_qemu_strtoi_octal); + g_test_add_func("/cutils/qemu_strtoi/decimal", + test_qemu_strtoi_decimal); + g_test_add_func("/cutils/qemu_strtoi/hex", + test_qemu_strtoi_hex); + g_test_add_func("/cutils/qemu_strtoi/max", + test_qemu_strtoi_max); + g_test_add_func("/cutils/qemu_strtoi/overflow", + test_qemu_strtoi_overflow); + g_test_add_func("/cutils/qemu_strtoi/underflow", + test_qemu_strtoi_underflow); + g_test_add_func("/cutils/qemu_strtoi/negative", + test_qemu_strtoi_negative); + g_test_add_func("/cutils/qemu_strtoi_full/correct", + test_qemu_strtoi_full_correct); + g_test_add_func("/cutils/qemu_strtoi_full/null", + test_qemu_strtoi_full_null); + g_test_add_func("/cutils/qemu_strtoi_full/empty", + test_qemu_strtoi_full_empty); + g_test_add_func("/cutils/qemu_strtoi_full/negative", + test_qemu_strtoi_full_negative); + g_test_add_func("/cutils/qemu_strtoi_full/trailing", + test_qemu_strtoi_full_trailing); + g_test_add_func("/cutils/qemu_strtoi_full/max", + test_qemu_strtoi_full_max); + + /* qemu_strtoui() tests */ + g_test_add_func("/cutils/qemu_strtoui/correct", + test_qemu_strtoui_correct); + g_test_add_func("/cutils/qemu_strtoui/null", + test_qemu_strtoui_null); + g_test_add_func("/cutils/qemu_strtoui/empty", + test_qemu_strtoui_empty); + g_test_add_func("/cutils/qemu_strtoui/whitespace", + test_qemu_strtoui_whitespace); + g_test_add_func("/cutils/qemu_strtoui/invalid", + test_qemu_strtoui_invalid); + g_test_add_func("/cutils/qemu_strtoui/trailing", + test_qemu_strtoui_trailing); + g_test_add_func("/cutils/qemu_strtoui/octal", + test_qemu_strtoui_octal); + g_test_add_func("/cutils/qemu_strtoui/decimal", + test_qemu_strtoui_decimal); + g_test_add_func("/cutils/qemu_strtoui/hex", + test_qemu_strtoui_hex); + g_test_add_func("/cutils/qemu_strtoui/max", + test_qemu_strtoui_max); + g_test_add_func("/cutils/qemu_strtoui/overflow", + test_qemu_strtoui_overflow); + g_test_add_func("/cutils/qemu_strtoui/underflow", + test_qemu_strtoui_underflow); + g_test_add_func("/cutils/qemu_strtoui/negative", + test_qemu_strtoui_negative); + g_test_add_func("/cutils/qemu_strtoui_full/correct", + test_qemu_strtoui_full_correct); + g_test_add_func("/cutils/qemu_strtoui_full/null", + test_qemu_strtoui_full_null); + g_test_add_func("/cutils/qemu_strtoui_full/empty", + test_qemu_strtoui_full_empty); + g_test_add_func("/cutils/qemu_strtoui_full/negative", + test_qemu_strtoui_full_negative); + g_test_add_func("/cutils/qemu_strtoui_full/trailing", + test_qemu_strtoui_full_trailing); + g_test_add_func("/cutils/qemu_strtoui_full/max", + test_qemu_strtoui_full_max); + /* qemu_strtol() tests */ g_test_add_func("/cutils/qemu_strtol/correct", test_qemu_strtol_correct); diff --git a/util/cutils.c b/util/cutils.c index b33ede8..0de69e6 100644 --- a/util/cutils.c +++ b/util/cutils.c @@ -298,6 +298,115 @@ static int check_strtox_error(const char *nptr, char *ep, } /** + * Convert string @nptr to an integer, and store it in @result. + * + * This is a wrapper around strtol() that is harder to misuse. + * Semantics of @nptr, @endptr, @base match strtol() with differences + * noted below. + * + * @nptr may be null, and no conversion is performed then. + * + * If no conversion is performed, store @nptr in *@endptr and return + * -EINVAL. + * + * If @endptr is null, and the string isn't fully converted, return + * -EINVAL. This is the case when the pointer that would be stored in + * a non-null @endptr points to a character other than '\0'. + * + * If the conversion overflows @result, store INT_MAX in @result, + * and return -ERANGE. + * + * If the conversion underflows @result, store INT_MIN in @result, + * and return -ERANGE. + * + * Else store the converted value in @result, and return zero. + */ +int qemu_strtoi(const char *nptr, const char **endptr, int base, + int *result) +{ + char *ep; + long long lresult; + + if (!nptr) { + if (endptr) { + *endptr = nptr; + } + return -EINVAL; + } + + errno = 0; + lresult = strtoll(nptr, &ep, base); + if (lresult < INT_MIN) { + *result = INT_MIN; + errno = ERANGE; + } else if (lresult > INT_MAX) { + *result = INT_MAX; + errno = ERANGE; + } else { + *result = lresult; + } + return check_strtox_error(nptr, ep, endptr, errno); +} + +/** + * Convert string @nptr to an unsigned integer, and store it in @result. + * + * This is a wrapper around strtoul() that is harder to misuse. + * Semantics of @nptr, @endptr, @base match strtoul() with differences + * noted below. + * + * @nptr may be null, and no conversion is performed then. + * + * If no conversion is performed, store @nptr in *@endptr and return + * -EINVAL. + * + * If @endptr is null, and the string isn't fully converted, return + * -EINVAL. This is the case when the pointer that would be stored in + * a non-null @endptr points to a character other than '\0'. + * + * If the conversion overflows @result, store UINT_MAX in @result, + * and return -ERANGE. + * + * Else store the converted value in @result, and return zero. + * + * Note that a number with a leading minus sign gets converted without + * the minus sign, checked for overflow (see above), then negated (in + * @result's type). This is exactly how strtoul() works. + */ +int qemu_strtoui(const char *nptr, const char **endptr, int base, + unsigned int *result) +{ + char *ep; + long long lresult; + + if (!nptr) { + if (endptr) { + *endptr = nptr; + } + return -EINVAL; + } + + errno = 0; + lresult = strtoull(nptr, &ep, base); + + /* Windows returns 1 for negative out-of-range values. */ + if (errno == ERANGE) { + *result = -1; + } else { + if (lresult > UINT_MAX) { + *result = UINT_MAX; + errno = ERANGE; + } else if (lresult < INT_MIN) { + *result = UINT_MAX; + errno = ERANGE; + } else { + *result = lresult; + } + } + return check_strtox_error(nptr, ep, endptr, errno); +} + +/** * Convert string @nptr to a long integer, and store it in @result. * * This is a wrapper around strtol() that is harder to misuse. |