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#define UT_UNKNOWN            0
#define RUN_LVL               1
#define BOOT_TIME             2
#define NEW_TIME              3
#define OLD_TIME              4
#define INIT_PROCESS          5
#define LOGIN_PROCESS         6
#define USER_PROCESS          7
#define DEAD_PROCESS          8
#define ACCOUNTING            9

#define UT_LINESIZE           12
#define UT_NAMESIZE           32
#define UT_HOSTSIZE           256

struct exit_status {
  short int e_termination;    /* process termination status.  */
  short int e_exit;           /* process exit status.  */
};

struct utmp {
  short ut_type;              /* type of login */
  pid_t ut_pid;               /* pid of login process */
  char ut_line[UT_LINESIZE];  /* device name of tty - "/dev/" */
  char ut_id[4];              /* init id or abbrev. ttyname */
  char ut_user[UT_NAMESIZE];  /* user name */
  char ut_host[UT_HOSTSIZE];  /* hostname for remote login */
  struct exit_status ut_exit; /* The exit status of a process
                                 marked as DEAD_PROCESS. */
  long ut_session;            /* session ID, used for windowing*/
  struct timeval ut_tv;       /* time entry was made.  */
  int32_t ut_addr_v6[4];      /* IP address of remote host.  */
  char pad[20];               /* Reserved for future use.  */
};

/* Backwards compatibility hacks.  */
#define ut_name ut_user
#ifndef _NO_UT_TIME
#define ut_time ut_tv.tv_sec
#endif
#define ut_xtime ut_tv.tv_sec
#define ut_addr ut_addr_v6[0]

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