HIDEPID_NO_ACCESS
if (!has_pid_permissions(fs_info, task, HIDEPID_NO_ACCESS))
has_perms = has_pid_permissions(fs_info, task, HIDEPID_NO_ACCESS);
case HIDEPID_NO_ACCESS: return "noaccess";
value == HIDEPID_NO_ACCESS ||
ctx->hidepid = HIDEPID_NO_ACCESS;