diff options
Diffstat (limited to 'sbin/comcontrol')
| -rw-r--r-- | sbin/comcontrol/comcontrol.8 | 79 | ||||
| -rw-r--r-- | sbin/comcontrol/comcontrol.c | 24 |
2 files changed, 31 insertions, 72 deletions
diff --git a/sbin/comcontrol/comcontrol.8 b/sbin/comcontrol/comcontrol.8 index bcb44e1088ee..eec9520db62f 100644 --- a/sbin/comcontrol/comcontrol.8 +++ b/sbin/comcontrol/comcontrol.8 @@ -1,47 +1,30 @@ -.Dd December 10, 1993 +.Dd May 15, 1994 .Dt COMCONTROL 8 .Os FreeBSD .Sh NAME .Nm comcontrol -.Nd "control the bidirectional status of a sio port and waiting time after DTR drop" +.Nd control an sio device. .Sh SYNOPSIS .Nm comcontrol .Ar sio_special_device -.Op Cm bidir | Fl bidir -.Op Cm dtrwait Ar ticks +.Op options .Sh DESCRIPTION .Nm Comcontrol -is used to examine and modify the bidirectional status -of a specified -sio communications port -and its waiting time after DTR drop. -By default (if -.Ar sio_special_device -only specified), -.Nm comcontrol -will print the current port state -(if kernel was built with -.Cm options COM_BIDIR ) -as either -.Cm bidir -to indicate that bidirectional operation is enabled or -.Fl bidir -to indicate that it is disabled, string -.Cm dtrwait -and current waiting time in ticks -after DTR drop. -To modify the status of the port or waiting time, simply -specify the desired new state -and/or new waiting time -on the command line. All users with -read access to the -.Ar sio_special_device -can use -.Nm comcontrol -to get the port's status and current waiting time. -Only root can set a port's status and waiting time. -By default, each port is initially unidirectional, waiting time is -2 seconds. +is used to examine and modify some of the special characterstics +of the specified sio device. +If no arguments other than the device are specified, +it prints the settings of all controllable characteristics. +This usage requires only read access on the device. +Only the superuser can change the settings. +.Pp +The following options are available: +.Bl -tag -width Fl +.It Cm dtrwait Ar number +Set the time to wait after dropping DTR +to the given number. +The units are hundredths of a second. +The default is 300 hundredths, i.e., 3 seconds. +.El .Pp The standard way to use .Nm comcontrol @@ -50,25 +33,21 @@ is to put invocations of it in the startup script. .Sh SEE ALSO .Xr sio 4 +.Xr stty 1 . .Sh FILES .Bl -tag -width Pa -.It Pa /dev/sio?? -.Sh DIAGNOSTICS -.Cm TIOCMSBIDIR: Inappropriate ioctl for device. -.Pp -This indicates attempt to change port status on -a non-sio special device file, -or the kernel has not been built with -.Cm options COM_BIDIR . -For more information concerning reconfiguration -of your kernel see -.Ar /usr/src/sys/i386/doc/config_options.doc. +.It Pa /dev/ttyd? +dialin devices. +.It Pa /dev/cua0? +dialout devices. .Sh AUTHOR Christopher G. Demetriou .Sh BUGS -It is strongly recommended that you do *not* -change the bidirectional status of a port while there are programs -using the port. Read that as: if you do, and it breaks, don't yell -at me; that's a really weird thing to do. +.Nm comcontrol +should be named +.Nm siocontrol . +. .Sh HISTORY Originally part of cgd's com package patches, version 0.2.1, to 386BSD 0.1. +Once controlled bidirectional capabilities. Little is left to control now +that these capabilities are standard. diff --git a/sbin/comcontrol/comcontrol.c b/sbin/comcontrol/comcontrol.c index e88e3d8f71e0..40cf8d25c8a8 100644 --- a/sbin/comcontrol/comcontrol.c +++ b/sbin/comcontrol/comcontrol.c @@ -38,7 +38,7 @@ void usage(char *progname) { - fprintf(stderr, "usage: %s <filename> [[-]bidir] [dtrwait <n>]\n", progname); + fprintf(stderr, "usage: %s <filename> [dtrwait <n>]\n", progname); exit(1); } @@ -58,10 +58,6 @@ int main(int argc, char *argv[]) } if (argc == 2) { - if (ioctl(fd, TIOCMGBIDIR, &res) >= 0) { - if (!res) printf("-"); - printf("bidir "); - } if (ioctl(fd, TIOCMGDTRWAIT, &dtrwait) < 0) { perror("TIOCMGDTRWAIT"); exit(1); @@ -72,17 +68,7 @@ int main(int argc, char *argv[]) res = dtrwait = -1; while (argv[2] != NULL) { - if (!strcmp(argv[2],"bidir")) { - if (res >= 0) - usage(prg); - res = 1; - argv++; - } else if (!strcmp(argv[2],"-bidir")) { - if (res >= 0) - usage(prg); - res = 0; - argv++; - } else if (!strcmp(argv[2],"dtrwait")) { + if (!strcmp(argv[2],"dtrwait")) { if (dtrwait >= 0) usage(prg); if (argv[3] == NULL || !isdigit(argv[3][0])) @@ -93,12 +79,6 @@ int main(int argc, char *argv[]) usage(prg); } } - if (res >= 0) { - if (ioctl(fd, TIOCMSBIDIR, &res) < 0) { - perror("TIOCMSBIDIR"); - exit(1); - } - } if (dtrwait >= 0) { if (ioctl(fd, TIOCMSDTRWAIT, &dtrwait) < 0) { perror("TIOCMSDTRWAIT"); |