Start of new user session routine of the login exit

The start of new user session routine is called when a new client machine-user combination is recognized by the server. The exit might acquire and initialize a UXB. This is needed only for system authentication, not for RPCSEC_GSS authentication. Table 1 shows the codes and fields that are used for this routine:

Table 1. Codes and fields for start of new user session
When Invoked	Field Name	Description	Contents
On entry	LEDSRQ	Request code	12
On entry	LEDSM	Client machine name	EBCDIC character string
On entry	LEDSIA	Client IP address	Number
On entry	LEDSU	UNIX Client User ID number	Number
On entry	LEDSG	UNIX Client Group ID number	Number
On entry	LEDSXS	User Exit Block	0
On entry	LEDSXG	Global Exit Block	Value
On entry	LEDSIA6	Client IP address	Number (128-bit Internet address, for Internet Protocol V6 users)
On exit	LEDSXD	Exit-supplied error message	Message Structure
On exit	LEDSRC	Return code	0 New session established 4 New session not established
On exit	LEDSXS	User Exit Block	Value, if return code in LEDSRC is 0