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/* ISC license. */
#include <stdint.h>
#include <skalibs/sgetopt.h>
#include <skalibs/types.h>
#include <skalibs/tai.h>
#include <skalibs/strerr2.h>
#include <skalibs/djbunix.h>
#include "s6-svlisten.h"
#define USAGE "s6-svlisten1 [ -U | -u | -d | -D | -r | -R ] [ -t timeout ] servicedir prog..."
#define dieusage() strerr_dieusage(100, USAGE)
int main (int argc, char const *const *argv, char const *const *envp)
{
s6_svlisten_t foo = S6_SVLISTEN_ZERO ;
tain deadline, tto ;
pid_t pid ;
int spfd ;
int e ;
int wantup = 1, wantready = 0, wantrestart = 0 ;
uint16_t id ;
unsigned char upstate, readystate ;
PROG = "s6-svlisten1" ;
{
subgetopt l = SUBGETOPT_ZERO ;
unsigned int t = 0 ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "uUdDrRt:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'u' : wantup = 1 ; wantrestart = 0 ; wantready = 0 ; break ;
case 'U' : wantup = 1 ; wantrestart = 0 ; wantready = 1 ; break ;
case 'd' : wantup = 0 ; wantrestart = 0 ; wantready = 0 ; break ;
case 'D' : wantup = 0 ; wantrestart = 0 ; wantready = 1 ; break ;
case 'r' : wantup = 1 ; wantrestart = 1 ; wantready = 0 ; break ;
case 'R' : wantup = 1 ; wantrestart = 1 ; wantready = 1 ; break ;
case 't' : if (!uint0_scan(l.arg, &t)) dieusage() ; break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
if (t) tain_from_millisecs(&tto, t) ; else tto = tain_infinite_relative ;
}
if (argc < 2) dieusage() ;
tain_now_set_stopwatch_g() ;
tain_add_g(&deadline, &tto) ;
spfd = s6_svlisten_selfpipe_init() ;
s6_svlisten_init(1, argv, &foo, &id, &upstate, &readystate, &deadline) ;
pid = child_spawn0(argv[1], argv + 1, envp) ;
if (!pid) strerr_diefu2sys(111, "spawn ", argv[1]) ;
if (wantrestart) s6_svlisten_loop(&foo, 0, 1, 1, &deadline, spfd, &s6_svlisten_signal_handler) ;
e = s6_svlisten_loop(&foo, wantup, wantready, 1, &deadline, spfd, &s6_svlisten_signal_handler) ;
if (e < 0) strerr_dief1x(102, "supervisor died") ;
else if (e > 0) strerr_dief2x(1, argv[0], " failed permanently: the finish script exited 125") ;
return 0 ;
}
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