1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/* ISC license. */
#include <skalibs/types.h>
#include <skalibs/strerr.h>
#include <skalibs/sgetopt.h>
#include <skalibs/tai.h>
#include <skalibs/djbunix.h>
#include <skalibs/exec.h>
#include <s6/fdholder.h>
#define USAGE "s6-fdholder-retrieve [ -D ] [ -t timeout ] socket id prog..."
#define dieusage() strerr_dieusage(100, USAGE)
int main (int argc, char const *const *argv)
{
s6_fdholder_t a = S6_FDHOLDER_ZERO ;
tain deadline ;
int fd ;
int dodelete = 0 ;
PROG = "s6-fdholder-retrieve" ;
{
unsigned int t = 0 ;
subgetopt l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "Dt:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'D' : dodelete = 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(&deadline, t) ;
else deadline = tain_infinite_relative ;
}
if (argc < 3) 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]) ;
fd = s6_fdholder_retrieve_maybe_delete_g(&a, argv[1], dodelete, &deadline) ;
if (fd < 0) strerr_diefu2sys(1, "retrieve fd for id ", argv[1]) ;
s6_fdholder_end(&a) ;
if (!fd)
{
if (uncoe(0) < 0) strerr_diefu1sys(111, "uncoe stdin") ;
}
else if (fd_move(0, fd) < 0) strerr_diefu1sys(111, "move fd") ;
xexec(argv+2) ;
}
|
