NAME

       nvme_get_subsys_attr - Read subsystem sysfs attribute

SYNOPSIS

       char * nvme_get_subsys_attr (nvme_subsystem_t s , const char *attr );

ARGUMENTS

       s           nvme_subsystem_t object

       attr        sysfs attribute name

RETURN

       String  with the contents of attr or NULL in case of an empty value or in case of an error
       (indicated by non-zero errno code).