return VIRTUALIZATION_XEN;
}
+#define XENFEAT_dom0 11 /* xen/include/public/features.h */
+#define PATH_FEATURES "/sys/hypervisor/properties/features"
/* Returns -errno, or 0 for domU, or 1 for dom0 */
static int detect_vm_xen_dom0(void) {
_cleanup_free_ char *domcap = NULL;
char *cap, *i;
int r;
+ r = read_one_line_file(PATH_FEATURES, &domcap);
+ if (r < 0 && r != -ENOENT)
+ return r;
+ if (r == 0) {
+ unsigned long features;
+
+ r = safe_atolu(domcap, &features);
+ if (r == 0) {
+ r = !!(features & (1U << XENFEAT_dom0));
+ log_debug("Virtualization XEN, found %s with value %08lx, "
+ "XENFEAT_dom0 (indicating the 'hardware domain') is%s set.",
+ PATH_FEATURES, features, r ? "" : " not");
+ return r;
+ }
+ log_debug("Virtualization XEN, found %s, unhandled content '%s'",
+ PATH_FEATURES, domcap);
+ }
+
r = read_one_line_file("/proc/xen/capabilities", &domcap);
if (r == -ENOENT) {
log_debug("Virtualization XEN because /proc/xen/capabilities does not exist");