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/* ISC license. */
#include <string.h>
#include <limits.h>
#include <skalibs/types.h>
#include <skalibs/strerr.h>
#include <skalibs/sgetopt.h>
#include <skalibs/tai.h>
#include <skalibs/djbunix.h>
#include <skalibs/genalloc.h>
#include <skalibs/exec.h>
#include <s6/fdholder.h>
#define USAGE "s6-fdholder-getdump [ -t timeout ] socket prog..."
#define dieusage() strerr_dieusage(100, USAGE)
int main (int argc, char const *const *argv, char const *const *envp)
{
s6_fdholder_t a = S6_FDHOLDER_ZERO ;
genalloc dump = GENALLOC_ZERO ;
tain deadline, halfinfinite ;
PROG = "s6-fdholder-getdump" ;
{
unsigned int t = 0 ;
subgetopt l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "t:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 't' : if (!uint0_scan(l.arg, &t)) dieusage() ; break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
if (t) tain_from_millisecs(&deadline, t) ;
else deadline = tain_infinite_relative ;
}
if (argc < 2) dieusage() ;
tain_now_set_stopwatch_g() ;
tain_add_g(&deadline, &deadline) ;
if (!s6_fdholder_start_g(&a, argv[0], &deadline))
strerr_diefu2sys(111, "connect to a fd-holder daemon at ", argv[0]) ;
if (!s6_fdholder_getdump_g(&a, &dump, &deadline))
strerr_diefu1sys(1, "get dump") ;
s6_fdholder_end(&a) ;
tain_half(&halfinfinite, &tain_infinite_relative) ;
tain_add_g(&halfinfinite, &halfinfinite) ;
{
size_t n = genalloc_len(s6_fdholder_fd_t, &dump) ;
size_t pos = 0 ;
unsigned int i = 0 ;
char modifs[7 + UINT_FMT + (25 + TIMESTAMP + 4 * UINT_FMT) * n] ;
if (n > UINT_MAX) strerr_dief1x(100, "dump exceeds maximum size") ;
memcpy(modifs + pos, "S6_FD#=", 7) ; pos += 7 ;
pos += uint_fmt(modifs + pos, n) ;
modifs[pos++] = 0 ;
for (; i < n ; i++)
{
s6_fdholder_fd_t *p = genalloc_s(s6_fdholder_fd_t, &dump) + i ;
size_t len = strlen(p->id) + 1 ;
if (uncoe(p->fd) < 0) strerr_diefu1sys(111, "uncoe") ;
memcpy(modifs + pos, "S6_FD_", 6) ; pos += 6 ;
pos += uint_fmt(modifs + pos, i) ;
modifs[pos++] = '=' ;
pos += uint_fmt(modifs + pos, p->fd) ;
modifs[pos++] = 0 ;
memcpy(modifs + pos, "S6_FDID_", 8) ; pos += 8 ;
pos += uint_fmt(modifs + pos, i) ;
modifs[pos++] = '=' ;
memcpy(modifs + pos, p->id, len) ;
pos += len ;
memcpy(modifs + pos, "S6_FDLIMIT_", 11) ; pos += 11 ;
pos += uint_fmt(modifs + pos, i) ;
if (tain_less(&p->limit, &halfinfinite))
{
modifs[pos++] = '=' ;
pos += timestamp_fmt(modifs + pos, &p->limit) ;
}
modifs[pos++] = 0 ;
}
xmexec_n(argv+1, modifs, pos, 1 + 3*n) ;
}
}
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