view rvinterf/libasync/launchrvif.c @ 549:b1e2dbb3c751
L1: l1_async.c compiles
author |
Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
date |
Sun, 03 Aug 2014 17:25:07 +0000 (2014-08-03) |
parents |
40b8557b9d04 |
children |
|
line source
/*
* This module implements the optional "behind the scenes" invokation
* of rvinterf from fc-tmsh.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static char rvinterf_pathname[] = "/usr/local/bin/rvinterf";
extern int sock;
char *rvinterf_Bopt, *rvinterf_lopt, *rvinterf_wopt;
launch_rvinterf(ttyport)
char *ttyport;
{
int sp[2], rc;
char *rvif_argv[11], Sarg[16], **ap;
rc = socketpair(AF_UNIX, SOCK_STREAM, 0, sp);
if (rc < 0) {
perror("socketpair");
exit(1);
}
sock = sp[0];
sprintf(Sarg, "-S%d", sp[1]);
ap = rvif_argv;
*ap++ = "rvinterf";
*ap++ = Sarg;
*ap++ = "-n";
if (rvinterf_Bopt) {
*ap++ = "-B";
*ap++ = rvinterf_Bopt;
}
if (rvinterf_lopt) {
*ap++ = "-l";
*ap++ = rvinterf_lopt;
}
if (rvinterf_wopt) {
*ap++ = "-w";
*ap++ = rvinterf_wopt;
}
*ap++ = ttyport;
*ap = 0;
rc = vfork();
if (rc < 0) {
perror("vfork for launching rvinterf");
exit(1);
}
if (!rc) {
/* we are in the child - do the exec */
close(sp[0]);
execv(rvinterf_pathname, rvif_argv);
perror(rvinterf_pathname);
_exit(1);
}
close(sp[1]);
return 0;
}