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/* ISC license. */
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <skalibs/types.h>
#include <skalibs/strerr2.h>
#include <skalibs/sgetopt.h>
#include <skalibs/tai.h>
#include <s6/s6-fdholder.h>
#define USAGE "s6-rc-fdholder-filler [ -1 ] [ -t timeout ] longrunnames..."
#define dieusage() strerr_dieusage(100, USAGE)
int main (int argc, char const *const *argv)
{
s6_fdholder_t a = S6_FDHOLDER_ZERO ;
tain_t deadline ;
int notif = 0 ;
PROG = "s6-rc-fdholder-filler" ;
{
unsigned int t = 0 ;
subgetopt_t l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "1t:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case '1': notif = 1 ; break ;
case 't': if (!uint0_scan(l.arg, &t)) dieusage() ; break ;
default : strerr_dieusage(100, USAGE) ;
}
}
argc -= l.ind ; argv += l.ind ;
if (t) tain_from_millisecs(&deadline, t) ;
else deadline = tain_infinite_relative ;
}
s6_fdholder_init(&a, 6) ;
tain_now_g() ;
tain_add_g(&deadline, &deadline) ;
if (argc)
{
tain_t offset = { .sec = TAI_ZERO } ;
int p[2] ;
unsigned int n = argc ;
unsigned int i = 0 ;
s6_fdholder_fd_t dump[n<<1] ;
for (; i < n ; i++)
{
size_t len = strlen(argv[i]) ;
if (len + 12 > S6_FDHOLDER_ID_SIZE)
{
errno = ENAMETOOLONG ;
strerr_diefu2sys(111, "create identifier for ", argv[i]) ;
}
if (pipe(p) < 0)
strerr_diefu1sys(111, "create pipe") ;
dump[i<<1].fd = p[0] ;
tain_add_g(&dump[i<<1].limit, &tain_infinite_relative) ;
offset.nano = i << 1 ;
tain_add(&dump[i<<1].limit, &dump[i<<1].limit, &offset) ;
memcpy(dump[i<<1].id, "pipe:s6rc-r-", 12) ;
memcpy(dump[i<<1].id + 12, argv[i], len + 1) ;
dump[(i<<1)+1].fd = p[1] ;
offset.nano = 1 ;
tain_add(&dump[(i<<1)+1].limit, &dump[i<<1].limit, &offset) ;
memcpy(dump[(i<<1)+1].id, dump[i<<1].id, 13 + len) ;
dump[(i<<1)+1].id[10] = 'w' ;
}
if (!s6_fdholder_setdump_g(&a, dump, n << 1, &deadline))
strerr_diefu1sys(111, "transfer pipes") ;
}
if (notif) write(1, "\n", 1) ;
return 0 ;
}
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