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
56
57
58
59
60
61
|
/* ISC license. */
#include <skalibs/nonposix.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <unistd.h>
#include <fcntl.h>
#include <skalibs/types.h>
#include <skalibs/sgetopt.h>
#include <skalibs/strerr.h>
#include <skalibs/socket.h>
#include <skalibs/exec.h>
#define USAGE "s6-ipcserver-socketbinder [ -d | -D ] [ -b backlog ] [ -M | -m ] [ -a perms ] [ -B ] path prog..."
#define dieusage() strerr_dieusage(100, USAGE)
int main (int argc, char const *const *argv)
{
unsigned int backlog = SOMAXCONN ;
int flagreuse = 1 ;
int flagdgram = 0 ;
unsigned int flags = O_NONBLOCK ;
unsigned int perms = 0777 ;
PROG = "s6-ipcserver-socketbinder" ;
{
subgetopt l = SUBGETOPT_ZERO ;
for (;;)
{
int opt = subgetopt_r(argc, argv, "DdMmBb:a:", &l) ;
if (opt == -1) break ;
switch (opt)
{
case 'D' : flagreuse = 0 ; break ;
case 'd' : flagreuse = 1 ; break ;
case 'M' : flagdgram = 0 ; break ;
case 'm' : flagdgram = 1 ; break ;
case 'B' : flags = 0 ; break ;
case 'b' : if (!uint0_scan(l.arg, &backlog)) dieusage() ; break ;
case 'a' : if (!uint0_oscan(l.arg, &perms)) dieusage() ; break ;
default : dieusage() ;
}
}
argc -= l.ind ; argv += l.ind ;
}
if (argc < 2) dieusage() ;
close(0) ;
if (flagdgram ? ipc_datagram_internal(flags) : ipc_stream_internal(flags))
strerr_diefu1sys(111, "create socket") ;
{
mode_t m = umask(~perms & 0777) ;
if ((flagreuse ? ipc_bind_reuse(0, argv[0]) : ipc_bind(0, argv[0])) < 0)
strerr_diefu2sys(111, "bind to ", argv[0]) ;
umask(m) ;
}
if (backlog && ipc_listen(0, backlog) < 0)
strerr_diefu2sys(111, "listen to ", argv[0]) ;
xexec(argv+1) ;
}
|
