/* ISC license. */

#ifndef S6_SUPERVISE_H
#define S6_SUPERVISE_H

#include <sys/types.h>
#include <skalibs/tai.h>

#define S6_SUPERVISE_CTLDIR "supervise"
#define S6_SUPERVISE_EVENTDIR "event"
#define S6_SVSCAN_CTLDIR ".s6-svscan"
#define S6_SVSTATUS_FILENAME S6_SUPERVISE_CTLDIR "/status"
#define S6_SVSTATUS_SIZE 35

extern int s6_svc_ok (char const *) ;
extern int s6_svc_write (char const *, char const *, unsigned int) ;
extern int s6_svc_writectl (char const *, char const *, char const *, unsigned int) ;
extern int s6_svc_main (int, char const *const *, char const *, char const *, char const *) ;

typedef struct s6_svstatus_s s6_svstatus_t, *s6_svstatus_t_ref ;
struct s6_svstatus_s
{
  tain_t stamp ;
  tain_t readystamp ;
  pid_t pid ;
  int wstat ;
  unsigned int flagpaused : 1 ;
  unsigned int flagfinishing : 1 ;
  unsigned int flagwant : 1 ;
  unsigned int flagwantup : 1 ;
  unsigned int flagready : 1 ;
} ;

#define S6_SVSTATUS_ZERO \
{ \
  .stamp = TAIN_ZERO, \
  .readystamp = TAIN_ZERO, \
  .pid = 0, \
  .wstat = 0, \
  .flagpaused = 0, \
  .flagfinishing = 0, \
  .flagwant = 1, \
  .flagwantup = 1, \
  .flagready = 1 \
}

extern void s6_svstatus_pack (char *, s6_svstatus_t const *) ;
extern void s6_svstatus_unpack (char const *, s6_svstatus_t *) ;
extern int s6_svstatus_read (char const *, s6_svstatus_t *) ;
extern int s6_svstatus_write (char const *, s6_svstatus_t const *) ;

/* These functions leak a fd, that's intended */
extern int s6_supervise_lock (char const *) ;
extern int s6_supervise_lock_mode (char const *, unsigned int, unsigned int) ;

#endif