util/cutils: Return qemu_strtosz*() error and value separately
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>
diff --git a/qemu-img.c b/qemu-img.c
index 39ef581..37d1afb 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -370,10 +370,14 @@
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)
