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util/cutils: Return qemu_strtosz*() error and value separately

Browse source 
This makes qemu_strtosz(), qemu_strtosz_mebi() and
qemu_strtosz_metric() similar to qemu_strtoi64(), except negative
values are rejected.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com> (maintainer:X86)
Cc: Kevin Wolf <kwolf@redhat.com> (supporter:Block layer core)
Cc: Max Reitz <mreitz@redhat.com> (supporter:Block layer core)
Cc: qemu-block@nongnu.org (open list:Block layer core)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <1487708048-2131-23-git-send-email-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2017-02-21 21:14:06 +01:00
parent 4fcdf65ae2
commit f17fd4fdf0
10 changed files with 119 additions and 77 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
hmp.c
View file

@ -1348,7 +1348,7 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
long valueint = 0;
Error *err = NULL;
bool use_int_value = false;
int i;
int i, ret;
for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
if (strcmp(param, MigrationParameter_lookup[i]) == 0) {
@ -1384,8 +1384,8 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
break;
case MIGRATION_PARAMETER_MAX_BANDWIDTH:
p.has_max_bandwidth = true;
valuebw = qemu_strtosz_MiB(valuestr, NULL);
if (valuebw < 0 || (size_t)valuebw != valuebw) {
ret = qemu_strtosz_MiB(valuestr, NULL, &valuebw);
if (ret < 0 || (size_t)valuebw != valuebw) {
error_setg(&err, "Invalid size %s", valuestr);
goto cleanup;
}

7
hw/misc/ivshmem.c
View file

@ -1267,8 +1267,11 @@ static void ivshmem_realize(PCIDevice *dev, Error **errp)
if (s->sizearg == NULL) {
s->legacy_size = 4 << 20; /* 4 MB default */
} else {
int64_t size = qemu_strtosz_MiB(s->sizearg, NULL);
if (size < 0 || (size_t)size != size || !is_power_of_2(size)) {
int ret;
int64_t size;
ret = qemu_strtosz_MiB(s->sizearg, NULL, &size);
if (ret < 0 || (size_t)size != size || !is_power_of_2(size)) {
error_setg(errp, "Invalid size %s", s->sizearg);
return;
}

6
include/qemu/cutils.h
View file

@ -139,9 +139,9 @@ int parse_uint(const char *s, unsigned long long *value, char **endptr,
int base);
int parse_uint_full(const char *s, unsigned long long *value, int base);
int64_t qemu_strtosz(const char *nptr, char **end);
int64_t qemu_strtosz_MiB(const char *nptr, char **end);
int64_t qemu_strtosz_metric(const char *nptr, char **end);
int qemu_strtosz(const char *nptr, char **end, int64_t *result);
int qemu_strtosz_MiB(const char *nptr, char **end, int64_t *result);
int qemu_strtosz_metric(const char *nptr, char **end, int64_t *result);
#define K_BYTE (1ULL << 10)
#define M_BYTE (1ULL << 20)

5
monitor.c
View file

@ -2799,6 +2799,7 @@ static QDict *monitor_parse_arguments(Monitor *mon,
break;
case 'o':
{
int ret;
int64_t val;
char *end;
@ -2811,8 +2812,8 @@ static QDict *monitor_parse_arguments(Monitor *mon,
break;
}
}
val = qemu_strtosz_MiB(p, &end);
if (val < 0) {
ret = qemu_strtosz_MiB(p, &end, &val);
if (ret < 0) {
monitor_printf(mon, "invalid size\n");
goto fail;
}

5
qapi/opts-visitor.c
View file

@ -482,14 +482,15 @@ opts_type_size(Visitor *v, const char *name, uint64_t *obj, Error **errp)
OptsVisitor *ov = to_ov(v);
const QemuOpt *opt;
int64_t val;
int err;
opt = lookup_scalar(ov, name, errp);
if (!opt) {
return;
}
val = qemu_strtosz(opt->str ? opt->str : "", NULL);
if (val < 0) {
err = qemu_strtosz(opt->str ? opt->str : "", NULL, &val);
if (err < 0) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, opt->name,
"a size value representible as a non-negative int64");
return;

10
qemu-img.c
View file

@ -370,10 +370,14 @@ static int add_old_style_options(const char *fmt, QemuOpts *opts,
static int64_t cvtnum(const char *s)
{
int64_t ret;
int err;
int64_t value;
ret = qemu_strtosz(s, NULL);
return ret;
err = qemu_strtosz(s, NULL, &value);
if (err < 0) {
return err;
}
return value;
}
static int img_create(int argc, char **argv)

10
qemu-io-cmds.c
View file

@ -137,10 +137,14 @@ static char **breakline(char *input, int *count)
static int64_t cvtnum(const char *s)
{
int64_t ret;
int err;
int64_t value;
ret = qemu_strtosz(s, NULL);
return ret;
err = qemu_strtosz(s, NULL, &value);
if (err < 0) {
return err;
}
return value;
}
static void print_cvtnum_err(int64_t rc, const char *arg)

5
target/i386/cpu.c
View file

@ -2033,10 +2033,11 @@ static void x86_cpu_parse_featurestr(const char *typename, char *features,
/* Special case: */
if (!strcmp(name, "tsc-freq")) {
int ret;
int64_t tsc_freq;
tsc_freq = qemu_strtosz_metric(val, NULL);
if (tsc_freq < 0) {
ret = qemu_strtosz_metric(val, NULL, &tsc_freq);
if (ret < 0) {
error_setg(errp, "bad numerical value %s", val);
return;
}

120
tests/test-cutils.c
View file

@ -1373,45 +1373,54 @@ static void test_qemu_strtosz_simple(void)
{
const char *str;
char *endptr = NULL;
int64_t res;
int err;
int64_t res = 0xbaadf00d;
str = "0";
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0);
g_assert(endptr == str + 1);
str = "12345";
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 12345);
g_assert(endptr == str + 5);
res = qemu_strtosz(str, NULL);
err = qemu_strtosz(str, NULL, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 12345);
/* Note: precision is 53 bits since we're parsing with strtod() */
str = "9007199254740991"; /* 2^53-1 */
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0x1fffffffffffff);
g_assert(endptr == str + 16);
str = "9007199254740992"; /* 2^53 */
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0x20000000000000);
g_assert(endptr == str + 16);
str = "9007199254740993"; /* 2^53+1 */
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0x20000000000000); /* rounded to 53 bits */
g_assert(endptr == str + 16);
str = "9223372036854774784"; /* 0x7ffffffffffffc00 (53 msbs set) */
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0x7ffffffffffffc00);
g_assert(endptr == str + 19);
str = "9223372036854775295"; /* 0x7ffffffffffffdff */
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 0x7ffffffffffffc00); /* rounded to 53 bits */
g_assert(endptr == str + 19);
@ -1429,39 +1438,48 @@ static void test_qemu_strtosz_units(void)
const char *t = "1T";
const char *p = "1P";
const char *e = "1E";
int err;
char *endptr = NULL;
int64_t res;
int64_t res = 0xbaadf00d;
/* default is M */
res = qemu_strtosz_MiB(none, &endptr);
err = qemu_strtosz_MiB(none, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, M_BYTE);
g_assert(endptr == none + 1);
res = qemu_strtosz(b, &endptr);
err = qemu_strtosz(b, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 1);
g_assert(endptr == b + 2);
res = qemu_strtosz(k, &endptr);
err = qemu_strtosz(k, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, K_BYTE);
g_assert(endptr == k + 2);
res = qemu_strtosz(m, &endptr);
err = qemu_strtosz(m, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, M_BYTE);
g_assert(endptr == m + 2);
res = qemu_strtosz(g, &endptr);
err = qemu_strtosz(g, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, G_BYTE);
g_assert(endptr == g + 2);
res = qemu_strtosz(t, &endptr);
err = qemu_strtosz(t, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, T_BYTE);
g_assert(endptr == t + 2);
res = qemu_strtosz(p, &endptr);
err = qemu_strtosz(p, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, P_BYTE);
g_assert(endptr == p + 2);
res = qemu_strtosz(e, &endptr);
err = qemu_strtosz(e, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, E_BYTE);
g_assert(endptr == e + 2);
}
@ -1469,10 +1487,12 @@ static void test_qemu_strtosz_units(void)
static void test_qemu_strtosz_float(void)
{
const char *str = "12.345M";
int err;
char *endptr = NULL;
int64_t res;
int64_t res = 0xbaadf00d;
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 12.345 * M_BYTE);
g_assert(endptr == str + 7);
}
@ -1481,21 +1501,22 @@ static void test_qemu_strtosz_invalid(void)
{
const char *str;
char *endptr = NULL;
int64_t res;
int err;
int64_t res = 0xbaadf00d;
str = "";
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -EINVAL);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -EINVAL);
g_assert(endptr == str);
str = " \t ";
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -EINVAL);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -EINVAL);
g_assert(endptr == str);
str = "crap";
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -EINVAL);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -EINVAL);
g_assert(endptr == str);
}
@ -1503,64 +1524,69 @@ static void test_qemu_strtosz_trailing(void)
{
const char *str;
char *endptr = NULL;
int64_t res;
int err;
int64_t res = 0xbaadf00d;
str = "123xxx";
res = qemu_strtosz_MiB(str, &endptr);
err = qemu_strtosz_MiB(str, &endptr, &res);
g_assert_cmpint(res, ==, 123 * M_BYTE);
g_assert(endptr == str + 3);
res = qemu_strtosz(str, NULL);
g_assert_cmpint(res, ==, -EINVAL);
err = qemu_strtosz(str, NULL, &res);
g_assert_cmpint(err, ==, -EINVAL);
str = "1kiB";
res = qemu_strtosz(str, &endptr);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 1024);
g_assert(endptr == str + 2);
res = qemu_strtosz(str, NULL);
g_assert_cmpint(res, ==, -EINVAL);
err = qemu_strtosz(str, NULL, &res);
g_assert_cmpint(err, ==, -EINVAL);
}
static void test_qemu_strtosz_erange(void)
{
const char *str;
char *endptr = NULL;
int64_t res;
int err;
int64_t res = 0xbaadf00d;
str = "-1";
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -ERANGE);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -ERANGE);
g_assert(endptr == str + 2);
str = "9223372036854775296"; /* 0x7ffffffffffffe00 */
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -ERANGE);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -ERANGE);
g_assert(endptr == str + 19);
str = "9223372036854775807"; /* 2^63-1 */
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -ERANGE);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -ERANGE);
g_assert(endptr == str + 19);
str = "9223372036854775808"; /* 2^63 */
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -ERANGE);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -ERANGE);
g_assert(endptr == str + 19);
str = "10E";
res = qemu_strtosz(str, &endptr);
g_assert_cmpint(res, ==, -ERANGE);
err = qemu_strtosz(str, &endptr, &res);
g_assert_cmpint(err, ==, -ERANGE);
g_assert(endptr == str + 3);
}
static void test_qemu_strtosz_metric(void)
{
const char *str = "12345k";
int err;
char *endptr = NULL;
int64_t res;
int64_t res = 0xbaadf00d;
res = qemu_strtosz_metric(str, &endptr);
err = qemu_strtosz_metric(str, &endptr, &res);
g_assert_cmpint(err, ==, 0);
g_assert_cmpint(res, ==, 12345000);
g_assert(endptr == str + 6);
}

22
util/cutils.c
View file

@ -205,10 +205,11 @@ static int64_t suffix_mul(char suffix, int64_t unit)
* in *end, if not NULL. Return -ERANGE on overflow, Return -EINVAL on
* other error.
*/
static int64_t do_strtosz(const char *nptr, char **end,
const char default_suffix, int64_t unit)
static int do_strtosz(const char *nptr, char **end,
const char default_suffix, int64_t unit,
int64_t *result)
{
int64_t retval;
int retval;
char *endptr;
unsigned char c;
int mul_required = 0;
@ -240,7 +241,8 @@ static int64_t do_strtosz(const char *nptr, char **end,
retval = -ERANGE;
goto out;
}
retval = val * mul;
*result = val * mul;
retval = 0;
out:
if (end) {
@ -252,19 +254,19 @@ out:
return retval;
}
int64_t qemu_strtosz(const char *nptr, char **end)
int qemu_strtosz(const char *nptr, char **end, int64_t *result)
{
return do_strtosz(nptr, end, 'B', 1024);
return do_strtosz(nptr, end, 'B', 1024, result);
}
int64_t qemu_strtosz_MiB(const char *nptr, char **end)
int qemu_strtosz_MiB(const char *nptr, char **end, int64_t *result)
{
return do_strtosz(nptr, end, 'M', 1024);
return do_strtosz(nptr, end, 'M', 1024, result);
}
int64_t qemu_strtosz_metric(const char *nptr, char **end)
int qemu_strtosz_metric(const char *nptr, char **end, int64_t *result)
{
return do_strtosz(nptr, end, 'B', 1000);
return do_strtosz(nptr, end, 'B', 1000, result);
}
/**