* Markus Armbruster (arm...@redhat.com) wrote: > Change the qemu_strtosz() & friends to return -EINVAL when @endptr is > null and the conversion doesn't consume the string completely. > Matches how qemu_strtol() & friends work. > > Only test_qemu_strtosz_simple() passes a null @endptr. No functional > change there, because its conversion consumes the string. > > Simplify callers that use @endptr only to fail when it doesn't point > to '\0' to pass a null @endptr instead. > > Cc: Dr. David Alan Gilbert <dgilb...@redhat.com> > Cc: Eduardo Habkost <ehabk...@redhat.com> (maintainer:X86) > Cc: Kevin Wolf <kw...@redhat.com> (supporter:Block layer core) > Cc: Max Reitz <mre...@redhat.com> (supporter:Block layer core) > Cc: qemu-bl...@nongnu.org (open list:Block layer core) > Signed-off-by: Markus Armbruster <arm...@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com> (end and endptr are horribly confusing names in do_strtosz) > --- > hmp.c | 6 ++---- > hw/misc/ivshmem.c | 6 ++---- > qapi/opts-visitor.c | 5 ++--- > qemu-img.c | 7 +------ > qemu-io-cmds.c | 7 +------ > target/i386/cpu.c | 5 ++--- > tests/test-cutils.c | 6 ++++++ > util/cutils.c | 14 +++++++++----- > 8 files changed, 25 insertions(+), 31 deletions(-) > > diff --git a/hmp.c b/hmp.c > index 6d0d05b..0eb5b6d 100644 > --- a/hmp.c > +++ b/hmp.c > @@ -1340,7 +1340,6 @@ void hmp_migrate_set_parameter(Monitor *mon, const > QDict *qdict) > const char *valuestr = qdict_get_str(qdict, "value"); > int64_t valuebw = 0; > long valueint = 0; > - char *endp; > Error *err = NULL; > bool use_int_value = false; > int i; > @@ -1379,9 +1378,8 @@ void hmp_migrate_set_parameter(Monitor *mon, const > QDict *qdict) > break; > case MIGRATION_PARAMETER_MAX_BANDWIDTH: > p.has_max_bandwidth = true; > - valuebw = qemu_strtosz_mebi(valuestr, &endp); > - if (valuebw < 0 || (size_t)valuebw != valuebw > - || *endp != '\0') { > + valuebw = qemu_strtosz_mebi(valuestr, NULL); > + if (valuebw < 0 || (size_t)valuebw != valuebw) { > error_setg(&err, "Invalid size %s", valuestr); > goto cleanup; > } > diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c > index 382dd8b..f00cd75 100644 > --- a/hw/misc/ivshmem.c > +++ b/hw/misc/ivshmem.c > @@ -1267,10 +1267,8 @@ static void ivshmem_realize(PCIDevice *dev, Error > **errp) > if (s->sizearg == NULL) { > s->legacy_size = 4 << 20; /* 4 MB default */ > } else { > - char *end; > - int64_t size = qemu_strtosz_mebi(s->sizearg, &end); > - if (size < 0 || (size_t)size != size || *end != '\0' > - || !is_power_of_2(size)) { > + int64_t size = qemu_strtosz_mebi(s->sizearg, NULL); > + if (size < 0 || (size_t)size != size || !is_power_of_2(size)) { > error_setg(errp, "Invalid size %s", s->sizearg); > return; > } > diff --git a/qapi/opts-visitor.c b/qapi/opts-visitor.c > index 360d337..911a0ee 100644 > --- a/qapi/opts-visitor.c > +++ b/qapi/opts-visitor.c > @@ -482,15 +482,14 @@ opts_type_size(Visitor *v, const char *name, uint64_t > *obj, Error **errp) > OptsVisitor *ov = to_ov(v); > const QemuOpt *opt; > int64_t val; > - char *endptr; > > opt = lookup_scalar(ov, name, errp); > if (!opt) { > return; > } > > - val = qemu_strtosz(opt->str ? opt->str : "", &endptr); > - if (val < 0 || *endptr) { > + val = qemu_strtosz(opt->str ? opt->str : "", NULL); > + if (val < 0) { > error_setg(errp, QERR_INVALID_PARAMETER_VALUE, opt->name, > "a size value representible as a non-negative int64"); > return; > diff --git a/qemu-img.c b/qemu-img.c > index 2a47966..adcb511 100644 > --- a/qemu-img.c > +++ b/qemu-img.c > @@ -370,14 +370,9 @@ static int add_old_style_options(const char *fmt, > QemuOpts *opts, > > static int64_t cvtnum(const char *s) > { > - char *end; > int64_t ret; > > - ret = qemu_strtosz(s, &end); > - if (*end != '\0') { > - /* Detritus at the end of the string */ > - return -EINVAL; > - } > + ret = qemu_strtosz(s, NULL); > return ret; > } > > diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c > index 6b7a89c..417a4e0 100644 > --- a/qemu-io-cmds.c > +++ b/qemu-io-cmds.c > @@ -137,14 +137,9 @@ static char **breakline(char *input, int *count) > > static int64_t cvtnum(const char *s) > { > - char *end; > int64_t ret; > > - ret = qemu_strtosz(s, &end); > - if (*end != '\0') { > - /* Detritus at the end of the string */ > - return -EINVAL; > - } > + ret = qemu_strtosz(s, NULL); > return ret; > } > > diff --git a/target/i386/cpu.c b/target/i386/cpu.c > index 3a8d72d..5cb0b4b 100644 > --- a/target/i386/cpu.c > +++ b/target/i386/cpu.c > @@ -2034,10 +2034,9 @@ static void x86_cpu_parse_featurestr(const char > *typename, char *features, > /* Special case: */ > if (!strcmp(name, "tsc-freq")) { > int64_t tsc_freq; > - char *err; > > - tsc_freq = qemu_strtosz_metric(val, &err); > - if (tsc_freq < 0 || *err) { > + tsc_freq = qemu_strtosz_metric(val, NULL); > + if (tsc_freq < 0) { > error_setg(errp, "bad numerical value %s", val); > return; > } > diff --git a/tests/test-cutils.c b/tests/test-cutils.c > index 585912b..07095e3 100644 > --- a/tests/test-cutils.c > +++ b/tests/test-cutils.c > @@ -1510,10 +1510,16 @@ static void test_qemu_strtosz_trailing(void) > g_assert_cmpint(res, ==, 123 * M_BYTE); > g_assert(endptr == str + 3); > > + res = qemu_strtosz(str, NULL); > + g_assert_cmpint(res, ==, -EINVAL); > + > str = "1kiB"; > res = qemu_strtosz(str, &endptr); > g_assert_cmpint(res, ==, 1024); > g_assert(endptr == str + 2); > + > + res = qemu_strtosz(str, NULL); > + g_assert_cmpint(res, ==, -EINVAL); > } > > static void test_qemu_strtosz_erange(void) > diff --git a/util/cutils.c b/util/cutils.c > index 4a290ea..5c1bfe5 100644 > --- a/util/cutils.c > +++ b/util/cutils.c > @@ -208,7 +208,7 @@ static int64_t suffix_mul(char suffix, int64_t unit) > static int64_t do_strtosz(const char *nptr, char **end, > const char default_suffix, int64_t unit) > { > - int64_t retval = -EINVAL; > + int64_t retval; > char *endptr; > unsigned char c; > int mul_required = 0; > @@ -217,7 +217,8 @@ static int64_t do_strtosz(const char *nptr, char **end, > errno = 0; > val = strtod(nptr, &endptr); > if (isnan(val) || endptr == nptr || errno != 0) { > - goto fail; > + retval = -EINVAL; > + goto out; > } > fraction = modf(val, &integral); > if (fraction != 0) { > @@ -232,17 +233,20 @@ static int64_t do_strtosz(const char *nptr, char **end, > assert(mul >= 0); > } > if (mul == 1 && mul_required) { > - goto fail; > + retval = -EINVAL; > + goto out; > } > if ((val * mul >= INT64_MAX) || val < 0) { > retval = -ERANGE; > - goto fail; > + goto out; > } > retval = val * mul; > > -fail: > +out: > if (end) { > *end = endptr; > + } else if (*endptr) { > + retval = -EINVAL; > } > > return retval; > -- > 2.7.4 > -- Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK