cutils: Add qemu_strtoul() wrapper

Add wrapper for strtoul() function. Include unit tests.

Signed-off-by: Carlos L. Torres <carlos.torres@rackspace.com>
Message-Id: <9621b4ae8e35fded31c715c2ae2a98f904f07ad0.1437346779.git.carlos.torres@rackspace.com>
[Fix tests for 32-bit build. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
master
Carlos L. Torres 2015-07-19 18:02:18 -05:00 committed by Paolo Bonzini
parent 764e0fa497
commit c817c01548
3 changed files with 352 additions and 0 deletions

View File

@ -205,6 +205,8 @@ int fcntl_setfl(int fd, int flag);
int qemu_parse_fd(const char *param);
int qemu_strtol(const char *nptr, const char **endptr, int base,
long *result);
int qemu_strtoul(const char *nptr, const char **endptr, int base,
unsigned long *result);
int parse_uint(const char *s, unsigned long long *value, char **endptr,
int base);

View File

@ -516,6 +516,292 @@ static void test_qemu_strtol_full_max(void)
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, LONG_MAX);
}
static void test_qemu_strtoul_correct(void)
{
const char *str = "12345 foo";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 12345);
g_assert(endptr == str + 5);
}
static void test_qemu_strtoul_null(void)
{
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(NULL, &endptr, 0, &res);
g_assert_cmpint(err, ==, -EINVAL);
g_assert(endptr == NULL);
}
static void test_qemu_strtoul_empty(void)
{
const char *str = "";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0);
g_assert(endptr == str);
}
static void test_qemu_strtoul_whitespace(void)
{
const char *str = " \t ";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0);
g_assert(endptr == str);
}
static void test_qemu_strtoul_invalid(void)
{
const char *str = " xxxx \t abc";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert(endptr == str);
}
static void test_qemu_strtoul_trailing(void)
{
const char *str = "123xxx";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 123);
g_assert(endptr == str + 3);
}
static void test_qemu_strtoul_octal(void)
{
const char *str = "0123";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(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_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0123);
g_assert(endptr == str + strlen(str));
}
static void test_qemu_strtoul_decimal(void)
{
const char *str = "0123";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(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_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 123);
g_assert(endptr == str + strlen(str));
}
static void test_qemu_strtoul_hex(void)
{
const char *str = "0123";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(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_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0x123);
g_assert(endptr == str + strlen(str));
}
static void test_qemu_strtoul_max(void)
{
const char *str = g_strdup_printf("%lu", ULONG_MAX);
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, ULONG_MAX);
g_assert(endptr == str + strlen(str));
}
static void test_qemu_strtoul_overflow(void)
{
const char *str = "99999999999999999999999999999999999999999999";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, -ERANGE);
g_assert_cmpint(res, ==, ULONG_MAX);
g_assert(endptr == str + strlen(str));
}
static void test_qemu_strtoul_underflow(void)
{
const char *str = "-99999999999999999999999999999999999999999999";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, -ERANGE);
g_assert_cmpint(res, ==, -1ul);
g_assert(endptr == str + strlen(str));
}
static void test_qemu_strtoul_negative(void)
{
const char *str = " \t -321";
char f = 'X';
const char *endptr = &f;
unsigned long res = 999;
int err;
err = qemu_strtoul(str, &endptr, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, -321ul);
g_assert(endptr == str + strlen(str));
}
static void test_qemu_strtoul_full_correct(void)
{
const char *str = "123";
unsigned long res = 999;
int err;
err = qemu_strtoul(str, NULL, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 123);
}
static void test_qemu_strtoul_full_null(void)
{
unsigned long res = 999;
int err;
err = qemu_strtoul(NULL, NULL, 0, &res);
g_assert_cmpint(err, ==, -EINVAL);
}
static void test_qemu_strtoul_full_empty(void)
{
const char *str = "";
unsigned long res = 999;
int err;
err = qemu_strtoul(str, NULL, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0);
}
static void test_qemu_strtoul_full_negative(void)
{
const char *str = " \t -321";
unsigned long res = 999;
int err;
err = qemu_strtoul(str, NULL, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, -321ul);
}
static void test_qemu_strtoul_full_trailing(void)
{
const char *str = "123xxx";
unsigned long res;
int err;
err = qemu_strtoul(str, NULL, 0, &res);
g_assert_cmpint(err, ==, -EINVAL);
}
static void test_qemu_strtoul_full_max(void)
{
const char *str = g_strdup_printf("%lu", ULONG_MAX);
unsigned long res = 999;
int err;
err = qemu_strtoul(str, NULL, 0, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, ULONG_MAX);
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
@ -566,5 +852,37 @@ int main(int argc, char **argv)
g_test_add_func("/cutils/qemu_strtol_full/max",
test_qemu_strtol_full_max);
/* qemu_strtoul() tests */
g_test_add_func("/cutils/qemu_strtoul/correct", test_qemu_strtoul_correct);
g_test_add_func("/cutils/qemu_strtoul/null", test_qemu_strtoul_null);
g_test_add_func("/cutils/qemu_strtoul/empty", test_qemu_strtoul_empty);
g_test_add_func("/cutils/qemu_strtoul/whitespace",
test_qemu_strtoul_whitespace);
g_test_add_func("/cutils/qemu_strtoul/invalid", test_qemu_strtoul_invalid);
g_test_add_func("/cutils/qemu_strtoul/trailing",
test_qemu_strtoul_trailing);
g_test_add_func("/cutils/qemu_strtoul/octal", test_qemu_strtoul_octal);
g_test_add_func("/cutils/qemu_strtoul/decimal", test_qemu_strtoul_decimal);
g_test_add_func("/cutils/qemu_strtoul/hex", test_qemu_strtoul_hex);
g_test_add_func("/cutils/qemu_strtoul/max", test_qemu_strtoul_max);
g_test_add_func("/cutils/qemu_strtoul/overflow",
test_qemu_strtoul_overflow);
g_test_add_func("/cutils/qemu_strtoul/underflow",
test_qemu_strtoul_underflow);
g_test_add_func("/cutils/qemu_strtoul/negative",
test_qemu_strtoul_negative);
g_test_add_func("/cutils/qemu_strtoul_full/correct",
test_qemu_strtoul_full_correct);
g_test_add_func("/cutils/qemu_strtoul_full/null",
test_qemu_strtoul_full_null);
g_test_add_func("/cutils/qemu_strtoul_full/empty",
test_qemu_strtoul_full_empty);
g_test_add_func("/cutils/qemu_strtoul_full/negative",
test_qemu_strtoul_full_negative);
g_test_add_func("/cutils/qemu_strtoul_full/trailing",
test_qemu_strtoul_full_trailing);
g_test_add_func("/cutils/qemu_strtoul_full/max",
test_qemu_strtoul_full_max);
return g_test_run();
}

View File

@ -416,6 +416,38 @@ int qemu_strtol(const char *nptr, const char **endptr, int base,
}
return err;
}
/**
* Converts ASCII string to an unsigned long integer.
*
* If string contains a negative number, value will be converted to
* the unsigned representation of the signed value, unless the original
* (nonnegated) value would overflow, in this case, it will set @result
* to ULONG_MAX, and return ERANGE.
*
* The same behavior holds, for qemu_strtoull() but sets @result to
* ULLONG_MAX instead of ULONG_MAX.
*
* See qemu_strtol() documentation for more info.
*/
int qemu_strtoul(const char *nptr, const char **endptr, int base,
unsigned long *result)
{
char *p;
int err = 0;
if (!nptr) {
if (endptr) {
*endptr = nptr;
}
err = -EINVAL;
} else {
errno = 0;
*result = strtoul(nptr, &p, base);
err = check_strtox_error(endptr, p, errno);
}
return err;
}
/**
* parse_uint:
*