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Add new options:
-K: set keepalive SLIP timeout -O: set outfill SLIP timeout Handle SIGURG from keepalive like SIGHUP now, i.e. reconnect. Back out background scription change, cause some synchro problems.
This commit is contained in:
Andrey A. Chernov
parent
ae91233946
commit
3cfd1dbc21
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=10860
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@ -53,6 +53,8 @@
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.Op Fl t Ar script_timeout
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.Op Fl W Ar maxtries
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.Op Fl w Ar retry_pause
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.Op Fl K Ar keepalive
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.Op Fl O Ar outfill
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.Ar device user passwd
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.Sh DESCRIPTION
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.Pp
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@ -160,6 +162,16 @@ Dial sequence number (see
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passed via
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.Dv LINE
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environment variable.
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.It Fl K Ar keepalive
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Set SLIP "keep alive" timeout in seconds. If FRAME_END not received in this
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timeout, reconnect occurse. Active "out fill" timeout expected from other
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side.
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Default value is no timeout.
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.It Fl O Ar outfill
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Set SLIP "out fill" timeout in seconds. It cause at least one FRAME_END
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will be sended during this timeout.
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Needed for "keep alive" timeout on other side.
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Default value is no timeout.
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.El
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.Sh FILES
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.Bl -tag -width /var/run/startslip.<device>.pid -compact
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@ -30,7 +30,7 @@
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: startslip.c,v 1.12 1995/09/15 22:18:45 ache Exp $
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* $Id: startslip.c,v 1.13 1995/09/16 05:18:20 ache Exp $
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*/
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#ifndef lint
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@ -108,10 +108,10 @@ main(argc, argv)
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extern int optind;
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char *cp, **ap;
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int ch, disc;
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void sighup(), sigterm();
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void sighup(), sigterm(), sigurg();
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FILE *wfd = NULL;
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char *dialerstring = 0, buf[BUFSIZ];
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int unitnum;
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int unitnum, keepal = 0, outfill = 0;
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char unitname[32];
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char *username, *password;
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char *upscript = NULL, *downscript = NULL;
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@ -120,7 +120,7 @@ main(argc, argv)
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pid_t pid;
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struct termios t;
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while ((ch = getopt(argc, argv, "dhlb:s:t:w:A:U:D:W:")) != EOF)
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while ((ch = getopt(argc, argv, "dhlb:s:t:w:A:U:D:W:K:O:")) != EOF)
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switch (ch) {
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case 'd':
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debug = 1;
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@ -160,6 +160,12 @@ main(argc, argv)
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case 'h':
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flowcontrol = FC_HW;
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break;
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case 'K':
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keepal = atoi(optarg);
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break;
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case 'O':
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outfill = atoi(optarg);
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break;
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case '?':
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default:
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usage();
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@ -191,6 +197,7 @@ main(argc, argv)
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if (debug)
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setbuf(stdout, NULL);
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signal(SIGTERM, sigterm);
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if ((dvname = strrchr(devicename, '/')) == NULL)
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dvname = devicename;
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else
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@ -206,8 +213,11 @@ main(argc, argv)
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sleep(5); /* allow down script to be completed */
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} else
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restart:
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signal(SIGHUP, SIG_IGN);
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signal(SIGURG, SIG_IGN);
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hup = 0;
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if (logged_in) {
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sprintf(buf, "LINE=%d %s %s down &",
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sprintf(buf, "LINE=%d %s %s down",
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diali ? (dialc - 1) % diali : 0,
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downscript ? downscript : "/sbin/ifconfig" , unitname);
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(void) system(buf);
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@ -223,8 +233,6 @@ main(argc, argv)
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*/
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down(3);
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}
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signal(SIGHUP, SIG_IGN);
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hup = 0;
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if (wfd) {
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printd("fclose, ");
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fclose(wfd);
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@ -233,8 +241,7 @@ main(argc, argv)
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wfd = NULL;
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fd = -1;
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sleep(5);
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}
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if (fd >= 0) {
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} else if (fd >= 0) {
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printd("close, ");
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close(fd);
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uu_unlock(dvname);
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@ -281,7 +288,6 @@ main(argc, argv)
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}
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printd(" %d", fd);
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signal(SIGHUP, sighup);
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signal(SIGTERM, sigterm);
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if (debug) {
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if (ioctl(fd, TIOCGETD, &disc) < 0)
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syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
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@ -422,11 +428,22 @@ main(argc, argv)
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}
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sprintf(unitname, "sl%d", unitnum);
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sprintf(buf, "LINE=%d %s %s up &",
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sprintf(buf, "LINE=%d %s %s up",
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diali ? (dialc - 1) % diali : 0,
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upscript ? upscript : "/sbin/ifconfig" , unitname);
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(void) system(buf);
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if (keepal > 0) {
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signal(SIGURG, sigurg);
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if (ioctl(fd, SLIOCSKEEPAL, &keepal) < 0) {
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syslog(LOG_ERR, "ioctl(SLIOCSKEEPAL): %m");
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down(2);
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}
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}
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if (outfill > 0 && ioctl(fd, SLIOCSOUTFILL, &outfill) < 0) {
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syslog(LOG_ERR, "ioctl(SLIOCSOUTFILL): %m");
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down(2);
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}
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printd(", ready\n");
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if (!first)
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syslog(LOG_INFO, "reconnected on %s (%d tries).\n", unitname, tries);
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@ -450,6 +467,16 @@ sighup()
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hup = 1;
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}
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void
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sigurg()
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{
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printd("urg\n");
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if (hup == 0 && logged_in)
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syslog(LOG_INFO, "dead line signal\n");
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hup = 1;
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}
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void
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sigterm()
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{
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@ -547,6 +574,7 @@ usage()
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(void)fprintf(stderr, "\
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usage: startslip [-d] [-b speed] [-s string1 [-s string2 [...]]] [-A annexname]\n\
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[-h] [-l] [-U upscript] [-D downscript] [-t script_timeout]\n\
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[-w retry_pause] [-W maxtries] device user passwd\n");
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[-w retry_pause] [-W maxtries] [-K keepalive] [-O outfill]\n\
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device user passwd\n");
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exit(1);
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}
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