Return security permissions routine of the file security exit

This routine is called to query a data set access mode or permission. The codes and fields used are shown in Table 1.

Table 1. Codes and fields for return security permissions
When Invoked	Field Name	Description	Contents
On entry	FEDSRQ	Request code	16
On entry	FEDSM	Client machine name	Character string
On entry	FEDSIA	Client IP address	Number
On entry	FEDSU	Client user ID number	Number
On entry	FEDSG	Client group ID number	Number
On entry	FEDSMU	z/OS user ID	Character string
On entry	FEDSDN	MVS data set name	Character string
On entry	FEDSMN	MVS data set member name	Character string
On entry	FEDSXS	User Exit Block	Address
On entry	FEDSXG	Global Exit Block	Address
On entry	FEDSTYPE	File type	Number
On entry	FEDSIA6	Client IP address	Number (128-bit Internet address, for Internet Protocol version 6 users)
On exit	FEDSXD	Exit-supplied error message	Message Structure
On exit	FEDSRC	Return code	0 Exit processing successful 4 Exit failed
On exit	FEDSRPM	New permissions in mode_t format	UNIX file modes of type mode_t as defined by POSIX