virt: add comment that we need to use sscanf()

Follow-up for 13e0f9fe83. See PR #7890 and comment in PR #7581.
2018-01-16 23:00:39 +09:00
parent fb76275a7a
commit 47dbb99ad7
1 changed files with 2 additions and 0 deletions
@@ -222,6 +222,8 @@ static int detect_vm_xen_dom0(void) {
        if (r == 0) {
                unsigned long features;

+                /* Here, we need to use sscanf() instead of safe_atoul()
+                 * as the string lacks the leading "0x". */
                r = sscanf(domcap, "%lx", &features);
                if (r == 1) {
                        r = !!(features & (1U << XENFEAT_dom0));