int main (int argc, char const *const *argv, char const *const *envp)
{
iopause_fd x[2] = { { -1, IOPAUSE_READ, 0 }, { -1, IOPAUSE_READ, 0 } } ;
struct taia deadline, tto ;
ftrigr_t a = FTRIGR_ZERO ;
int pid ;
uint16 id ;
PROG = "s6-ftrig-listen1" ;
{
unsigned int t = 0 ;
for (;;)
{
register int opt = subgetopt(argc, argv, "t:") ;
if (opt == -1) break ;
switch (opt)
{
case 't' : if (uint0_scan(subgetopt_here.arg, &t)) break ;
default : strerr_dieusage(100, USAGE) ;
}
}
if (t) taia_from_millisecs(&tto, t) ;
else tto = infinitetto ;
argc -= subgetopt_here.ind ; argv += subgetopt_here.ind ;
}
if (argc < 3) strerr_dieusage(100, USAGE) ;
taia_now_g() ;
taia_add_g(&deadline, &tto) ;
if (!ftrigr_startf_g(&a, &deadline)) strerr_diefu1sys(111, "ftrigr_startf") ;
id = ftrigr_subscribe_g(&a, argv[0], argv[1], 0, &deadline) ;
if (!id) strerr_diefu4sys(111, "subscribe to ", argv[0], " with regexp ", argv[1]) ;
x[0].fd = selfpipe_init() ;
if (x[0].fd < 0) strerr_diefu1sys(111, "selfpipe_init") ;
if (selfpipe_trap(SIGCHLD) < 0) strerr_diefu1sys(111, "selfpipe_trap") ;
if (sig_ignore(SIGPIPE) < 0) strerr_diefu1sys(111, "sig_ignore") ;
x[1].fd = ftrigr_fd(&a) ;
pid = fork() ;
switch (pid)
{
case -1 : strerr_diefu1sys(111, "fork") ;
case 0 :
{
PROG = "s6-ftrig-listen1 (child)" ;
pathexec_run(argv[2], argv+2, envp) ;
strerr_dieexec(111, argv[2]) ;
}
}
for (;;)
{
char dummy ;
register int r = ftrigr_check(&a, id, &dummy) ;
if (r < 0) strerr_diefu1sys(111, "ftrigr_check") ;
if (r) break ;
r = iopause_g(x, 2, &deadline) ;
if (r < 0) strerr_diefu1sys(111, "iopause") ;
else if (!r)
{
errno = ETIMEDOUT ;
strerr_diefu1sys(1, "get expected event") ;
}
if (x[0].revents & IOPAUSE_READ) handle_signals() ;
if (x[1].revents & IOPAUSE_READ)
{
if (ftrigr_update(&a) < 0) strerr_diefu1sys(111, "ftrigr_update") ;
}
}
return 0 ;
}
int main (int argc, char const **argv, char const *const *envp)
{
iopause_fd x[2] = { { -1, IOPAUSE_READ, 0 }, { -1, IOPAUSE_READ, 0 } } ;
tain_t deadline, tto ;
ftrigr_t a = FTRIGR_ZERO ;
int argc1 ;
unsigned int i = 0 ;
char or = 0 ;
PROG = "s6-ftrig-listen" ;
{
unsigned int t = 0 ;
for (;;)
{
register int opt = subgetopt(argc, argv, "aot:") ;
if (opt == -1) break ;
switch (opt)
{
case 'a' : or = 0 ; break ;
case 'o' : or = 1 ; break ;
case 't' : if (uint0_scan(subgetopt_here.arg, &t)) break ;
default : dieusage() ;
}
}
if (t) tain_from_millisecs(&tto, t) ; else tto = tain_infinite_relative ;
argc -= subgetopt_here.ind ; argv += subgetopt_here.ind ;
}
if (argc < 4) dieusage() ;
argc1 = el_semicolon(argv) ;
if (!argc1 || (argc1 & 1) || (argc == argc1 + 1)) dieusage() ;
if (argc1 >= argc) strerr_dief1x(100, "unterminated fifodir+regex block") ;
tain_now_g() ;
tain_add_g(&deadline, &tto) ;
x[0].fd = selfpipe_init() ;
if (x[0].fd < 0) strerr_diefu1sys(111, "selfpipe_init") ;
if (selfpipe_trap(SIGCHLD) < 0) strerr_diefu1sys(111, "selfpipe_trap") ;
if (sig_ignore(SIGPIPE) < 0) strerr_diefu1sys(111, "sig_ignore") ;
if (!ftrigr_startf_g(&a, &deadline)) strerr_diefu1sys(111, "ftrigr_startf") ;
x[1].fd = ftrigr_fd(&a) ;
{
int pid = 0 ;
unsigned int idlen = argc1 >> 1 ;
uint16 ids[idlen] ;
for (; i < idlen ; i++)
{
ids[i] = ftrigr_subscribe_g(&a, argv[i<<1], argv[(i<<1)+1], 0, &deadline) ;
if (!ids[i]) strerr_diefu4sys(111, "subscribe to ", argv[i<<1], " with regexp ", argv[(i<<1)+1]) ;
}
pid = child_spawn0(argv[argc1 + 1], argv + argc1 + 1, envp) ;
if (!pid) strerr_diefu2sys(111, "spawn ", argv[argc1 + 1]) ;
for (;;)
{
register int r ;
i = 0 ;
while (i < idlen)
{
char dummy ;
r = ftrigr_check(&a, ids[i], &dummy) ;
if (r < 0) strerr_diefu1sys(111, "ftrigr_check") ;
else if (!r) i++ ;
else if (or) idlen = 0 ;
else ids[i] = ids[--idlen] ;
}
if (!idlen) break ;
r = iopause_g(x, 2, &deadline) ;
if (r < 0) strerr_diefu1sys(111, "iopause") ;
else if (!r)
{
errno = ETIMEDOUT ;
strerr_diefu1sys(1, "get expected event") ;
}
if (x[0].revents & IOPAUSE_READ) handle_signals() ;
if (x[1].revents & IOPAUSE_READ)
{
if (ftrigr_update(&a) < 0) strerr_diefu1sys(111, "ftrigr_update") ;
}
}
}
return 0 ;
}
}
}
static inline int got (s6_svlisten_t const *foo, int wantup, int wantready, int or)
{
register unsigned int m = bitarray_div8(foo->n) ;
unsigned char t[m] ;
byte_copy(t, m, foo->upstate) ;
if (!wantup) bitarray_not(t, 0, foo->n) ;
if (wantready) bitarray_and(t, t, foo->readystate, foo->n) ;
return (bitarray_first(t, foo->n, or) < foo->n) == or ;
}
int s6_svlisten_loop (s6_svlisten_t *foo, int wantup, int wantready, int or, tain_t const *deadline, int spfd, action_func_t_ref handler)
{
iopause_fd x[2] = { { .fd = ftrigr_fd(&foo->a), .events = IOPAUSE_READ }, { .fd = spfd, .events = IOPAUSE_READ, .revents = 0 } } ;
while (!got(foo, wantup, wantready, or))
{
register int r = iopause_g(x, 1 + (spfd >= 0), deadline) ;
if (r < 0) strerr_diefu1sys(111, "iopause") ;
else if (!r) strerr_dief1x(1, "timed out") ;
if (x[1].revents & IOPAUSE_READ) (*handler)() ;
if (x[0].revents & IOPAUSE_READ)
{
register unsigned int i = 0 ;
if (ftrigr_update(&foo->a) < 0) strerr_diefu1sys(111, "ftrigr_update") ;
for (; i < foo->n ; i++)
{
char what ;
register int r = ftrigr_check(&foo->a, foo->ids[i], &what) ;
if (r < 0) strerr_diefu1sys(111, "ftrigr_check") ;