mach_msg_type_number_t info_count = VM_REGION_BASIC_INFO_COUNT;
#endif
- kr =
- mach_vm_region(
- map,
- &address,
- &size,
- flavor,
- (vm_region_info_t)&info,
- &info_count,
- &object);
+ kr = mach_vm_region(map, &address, &size, flavor, (vm_region_info_t)&info, &info_count, &object);
if (kr == KERN_INVALID_ADDRESS) {
break;
- }
- else if (kr != KERN_SUCCESS) {
+
+ } else if (kr != KERN_SUCCESS) {
std::perror("mach_vm_region failed");
- std::fprintf(stderr, "Cannot request authorization for kernel information access\n");
+ std::fprintf(stderr, "Cannot request authorization for kernel information access (kr=%d)\n", (int)kr);
+ switch (kr) { // https://github.com/apple/darwin-xnu/blob/main/bsd/kern/stackshot.c#L42
+ case KERN_SUCCESS:
+ XBT_INFO("kr=KERN_SUCCESS");
+ break;
+ case KERN_RESOURCE_SHORTAGE:
+ XBT_INFO("kr=KERN_RESOURCE_SHORTAGE (ENOMEM)");
+ break;
+ case KERN_INSUFFICIENT_BUFFER_SIZE:
+ XBT_INFO("kr=KERN_INSUFFICIENT_BUFFER_SIZE (ENOSPC)");
+ break;
+ case KERN_NO_SPACE:
+ XBT_INFO("kr=KERN_NO_SPACE (ENOSPC)");
+ break;
+ case KERN_NO_ACCESS:
+ XBT_INFO("kr=KERN_NO_ACCESS (EPERM)");
+ break;
+ case KERN_MEMORY_PRESENT:
+ XBT_INFO("kr=KERN_MEMORY_PRESENT (EEXIST)");
+ break;
+ case KERN_NOT_SUPPORTED:
+ XBT_INFO("kr=KERN_NOT_SUPPORTED (ENOTSUP)");
+ break;
+ case KERN_NOT_IN_SET:
+ XBT_INFO("kr=KERN_NOT_IN_SET (ENOENT)");
+ break;
+ case KERN_ABORTED:
+ XBT_INFO("kr=KERN_ABORTED (EINTR)");
+ break;
+ case KERN_FAILURE:
+ XBT_INFO("kr=KERN_FAILURE (EBUSY)");
+ break;
+ case KERN_OPERATION_TIMED_OUT:
+ XBT_INFO("kr=KERN_OPERATION_TIMED_OUT (ETIMEDOUT)");
+ break;
+ default:
+ XBT_INFO("kr=default case (EINVAL)");
+ }
abort();
}