SX.25 provides a mechanism for using the standard UNIX uucp, cu, and associated commands over the PAD program by using the xty device driver. The xty device behaves like a tty device that supports both blocking and non-blocking opens of the same logical device. It can support gettys for incoming calls that make a blocking open on the xty device.
This chapter provides information on these UUCP topics:
SX.25 supports a STREAMS interface called the XYT_OUT system, which uses the xty STREAMS module only for outgoing uucp/cu calls. This type of system does not require getty processes. Incoming calls are handled directly by the PAD daemon that executes the login process.
A number of files need modification before uucp/cu type calls can be made over the xty driver. These files and their uses are described below. All these files can be found in the directory /usr/lib/uucp. For detailed information on individual files, refer to IRIX Admin: Networking and Mail.
| Devices | Specifies which xty devices are available for outgoing calls. | |||
| Dialcodes | Specifies a number of host-to-SX.25 address mappings. | |||
| Permissions | Specifies permissions that remote users have when sending files, whether local users can request files, and which commands users are allowed to use.
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| Dialers | Specifies the command that uucp issues to the pad program to make a uucp call. | |||
| Systems | Specifies the hosts that uucp knows about. It includes login names and character sequences that uucp is to send and expects to receive as responses. |
These files would have the format presented below for a typical UUCP-over-X.25 configuration.
Typically, one line is entered for each outgoing xty device. Lines like the following should be added to the Devices file:
Pad xty80 - 9600 pad Pad xty81 - 9600 pad Pad xty82 - 9600 pad Pad xty83 - 9600 pad |
The new entries in the Dialcodes file specify a name to X.25 address mapping. This name is used in the Permissions and Systems files. Lines like the following should be added to the Dialcodes file:
hostname1 A.1234567891 hostname2 A.1234567892 |
Lines like the following should be added to the Permissions file:
MACHINE=hostname1:hostname2 \ REQUEST=yes \ SENDFILES=yes \ READ=/ WRITE=/ \ COMMANDS=ALL LOGNAME=nuucp \ REQUEST=yes \ SENDFILES=yes \ READ=/ WRITE=/ \ COMMANDS=ALL |
 | Note: These permissions let users do almost anything, so you may need to be more restrictive. For more detail, refer to IRIX Admin: Networking and Mail. |