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Introduction to

IBMrsquos Unix System Services (USS)

2zCPO zClass Introduction to zOS

Applications running on zOS USS HTTP Server Web Application Server SDK (Java System Development Kit) ERP applications Oracle PeopleSoft SAP R3 Lotus Domino TCPIP 1048708


USS It is really a Unix System

It is within MVS (zOS now)You can rloginTo a Unix programmer it looks like Unixhellip But there are some differences amp thatrsquos what will talk

about What it is not

A complete operating system A virtual machine1048708 A started task (it used to be prior to V2R4)1048708 Sole owner of the processor and resources1048708 A resource manager zOS does that


UNIX System Services Posix Shells UNIX System Services Posix Shells and Utilitiesand Utilities

File System

Familiar UNIX Interface

cd kill wait-

continue exec unset

POSIX files

X-Windows

Motif

3270

InputUser

InterpretShell

ProcessUtilities

diffgrep

awklocale

printfc89make

yacc

mkdirfind

arvi


MVS - UNIX whats the difference

1048708 Terminology1048708Kernel versus Nucleus 1048708 Process versus Tasks 1048708 Fork versus Attach 1048708 Daemons versus Started Tasks

1048708 Technology Shell commands vs TSO commands 1048708 Flat file versus Datasets 1048708 Stream IO versus Record IO

1048708 IF you can learn JCL1048708 like this XYZ EXEC PGM=BPXBATCHPARM=sh ps -ej 1048708 THEN you can learn shell commands

1048708 like this ls -l | sort -rn -k5 | head -1 ELSE You may need a different job


zOS Unix Terminology An address space is a process in UNIX A task (TCB) is called a thread A started task (STC) is a deamon zOS has TSOE (ISPF) and UNIX uses a shell Applications are written in different languages and jobs are submitted for processing in different ways File System Structures - HFS - zFS PFS ndash Physical File System zOS UNIX Kernel


UNIX System Services Different Types of processesUNIX System Services Different Types of processes

Daemons inetd base for telnet rlogin httpd the Web server crond the batch server tcpip daemons ftpd telnetd rlogind

User Foreground Background


Basic Security UNIX vs zOS

Mom vs Dad approach to securityzOS (MOM) Says no to everythingUNIX (DAD) Says yes assuming that once you hurt

yourself you wont do it again zOS Relegates uid 0 to a file access privilege

All special privileges are granted via RACF profileszOS direction is to eliminate the need for uid 0


zOS UNIX security

Unlike most UNIX platforms zOS Unix System ServicesAssociates a user identity with all processes and

activitiesProvides superior auditingloggingControls user authorization to Super User capabilityHas no need for distributing Root User passwordRequires user authentication for all TCPIP

commandsRACF provides the underpinnings to implement USS

security


Forks and Spawns A Fork Creates a new address space

Managed by WLM A SPAWN

Thread runs in the same address space where it was spawned OR IBM added a profile that indicates SPAWN may result in a new address space

Managed by WLM When in USS Forget about address spaces

Just think of it as a process You can check on it with ps -ef You can kill it with kill

Forget about Tasks you can create em with pthread_create you can kill em with pthread_cancel


forkspawn

T P

T P

syscallUNIXkernel

dub T pthread_create

T

B

P

B

BPXBATCH

exec

T PB

T PB

T P

TSOSTCBatch

JES Initiator

Any AS

Any AS WLM AS (BPXAS)

= PROCESS= TCB

PT

A

B

C

D

T

BT

B

UNIX System Services UNIX System Services Running Unix ApplicationsRunning Unix Applications


bull Each Process has an ID (PID) number bull Each Process is either a Parent or Child

Address Space ( MVS Task)

TCB

TCBTCB

TCB

TCB Process

Process

Process

UNIX System Services UNIX System Services ProcessesProcesses

Address Space ( USS Process)


zOS Unix amp the zOS Operating System

Lang

uage

En

viro

nmen

t


UNIX is inherent in zOS


UNIX System Services and zOSUNIX System Services and zOS

zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS

UNIX programs execute inzOS Address Spaces

Unix Services are automatically started at IPL

UNIX Servicesuses zOSServices

Unix Services

zOS Nucleus

zOS Communications Server

TCPIPVTAM


USS requires a Security Managerie RACF OMVS Segment


UNIX System Services UNIX System Services Execution OptionsExecution Options

UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms

Application Programming Interfaces

Non-UNIX Services UNIX Services

MVSData Sets HFS

zOS Applications

ZFS


Program File Access MVS amp UNIX Not too Different


Moving data between file systems


Comparison of MVS Datasets and UNIX HFS


zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds

Program API Interactive

UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE

UNIX System Services InterfacesUNIX System Services Interfaces


TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications

rlogin or telnet from a remote workstation

(Takes you directly into the shell)

Access to UNIX System ServicesAccess to UNIX System Services


Acces to UNIX System Services(contd)Acces to UNIX System Services(contd)

Traditional MVS environmentTSO

TSO ISH - TSO experienced user (ISHELL)

TSO OMVS - UNIX experienced user

Traditional UNIX environment

Telnet

rlogin


IPLhellip

zOS includingUNIX Services

SMF amp RMF records

Trace data

RMFReports

Managing UNIX System ServicesManaging UNIX System Services


S1 EXEC PGM=MVSPROG1


S2 EXEC PGM=BPXBATCH

OPENBATC JOB

PARM=pgm cprog a1 a2

MVS batch program

OpenMVS batch program

MVS batch program

End of job

Start of job

UNIX System Services MVS Batch UNIX System Services MVS Batch EnvironmentEnvironment


OMVSCPGM OMVSEXECSTDOUT

JOBEXECDD

PGM=BPXBATCHPARM=pgm cprog a1 a2PATH=DIR1DIR2STDOUTPUTPATHOPTS=(OWRONLYOCREATE)PATHDISP=KEEP

STDERR

DD

PATH=DIR1DIR2STDERRORPATHMODE=(SIRWXV)PATHDISP=KEEP

PATHMODE=(SIRWXV)

PATHOPTS=(OWRONLYOCREATE)

USER=username

NEW JCL PARMS FOR HFSzFS FILES

UNIX System Services JCL For USS UNIX System Services JCL For USS File SystemsFile Systems


Root ()

u usr notesdata

files

mail

mailfilensf

UNIX System Services File System UNIX System Services File System Data SetsData Sets


UNIX File System Structure

PATH = dir1dir2dir3myfile

dir1

dir2

dir3myfileMYFILE

PATH = dir1dir2dir3MYFILE

MyFile

PATH = dir1dir2dir3MyFile


bin dev etc u usr

IBMshlscatmkdir

ptyp0000ttyp0000fd0null

profilercyylexc

tmp lib

joe bill jane

mail man sbin include

samples

OMVSVS26AR1ROOT

UNIX System Services Root File UNIX System Services Root File SystemSystem

OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL


Hierarchical File System andzOS File System Datasets


FILESYSTYPE TYPE(TFS) ENTRYPOINT(BPXTFS) MOUNT FILESYSTEM(TMP) TYPE(HFS) MOUNTPOINT(tmp) PARM( -s 10)

HFS ROOT FILE SYSTEM

tmp

TFS

Kernel

name = hfsroot

VOL 1

memory

UNIX System Services A Memory UNIX System Services A Memory File SystemFile System

bull Mount a temporary file system (TFS) over tmp in the HFS so that you have a high-speed file system for temporary files The temporary file system is an in-memory file system that is not written to DASD

ie USS configin BPXPRMxx


zOS File System (zFS)

zFS is a new UNIX file systemBased on the DCE Local File System (Episode) of

Distributed File Service Provides improved performance Provides additional administrative function multiple file

systems in a single data set file system cloning HFS has been stabilized (no new development) zFS is the base for future development

Ani 6


UNIX System Services Mount and UNIX System Services Mount and UnmountUnmount

Dir Domino User

Dir

Usr

FF

F

F

F

HFS Root File System

mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir

VOL 4name = ussdomino

ZFS

bull With the TSOE MOUNT commandbull Using an OMVS shell mount commandbull Using the ISHELLbull A mount statement in the BPXPRMxx PARMLIB memberbull An automount policy


An example of HFS Allocations under zOS

NotedfSMSRules


Example of MOUNT Command with ISHELL


OMVS Interface


Ishell Interface


ISPF EDITBROWSE Functions available in USS

directoryfile

iISPF EDIT

ldquoIrdquo INSERT a new line

OEDIT OBROWSE


Unix System Services runs as a System Address Space

OMVS

(kernel)


UNIX in zOS Value Add

zOS UNIX is built for the Enterprise UNIX and non-UNIX applications All enterprise data zOS UNIX is fully integrated in zOS System interaction

Kernel VSM RSM Dispatcher WLM All zOS value 1048708Scalable 1048708Secure 1048708ReliabilityAvailability 1048708Systems Management 1048708Cost of ownership USS Integral to all future zOS enhancements zOS UNIX - the only UNIX system that supports


Applications running on zOS USS

USS

Slide 4


zOS Unix Terminology

UNIX System Services Different Types of processes


zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18

USS requires a Security Manager

Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47




Applications running on zOS USS HTTP Server Web Application Server SDK (Java System Development Kit) ERP applications Oracle PeopleSoft SAP R3 Lotus Domino TCPIP 1048708








File System


cd kill wait-

continue exec unset

POSIX files

X-Windows

Motif

3270

InputUser

InterpretShell

ProcessUtilities

diffgrep

awklocale

printfc89make

yacc

mkdirfind

arvi



















zOS UNIX security




security









forkspawn

T P

T P

syscallUNIXkernel


T

B

P

B

BPXBATCH

exec

T PB

T PB

T P

TSOSTCBatch

JES Initiator

Any AS


= PROCESS= TCB

PT

A

B

C

D

T

BT

B





TCB

TCBTCB

TCB

TCB Process

Process

Process





Lang

uage

En

viro

nmen

t





zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS




Unix Services

zOS Nucleus


TCPIPVTAM





UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47










File System


cd kill wait-

continue exec unset

POSIX files

X-Windows

Motif

3270

InputUser

InterpretShell

ProcessUtilities

diffgrep

awklocale

printfc89make

yacc

mkdirfind

arvi



















zOS UNIX security




security









forkspawn

T P

T P

syscallUNIXkernel


T

B

P

B

BPXBATCH

exec

T PB

T PB

T P

TSOSTCBatch

JES Initiator

Any AS


= PROCESS= TCB

PT

A

B

C

D

T

BT

B





TCB

TCBTCB

TCB

TCB Process

Process

Process





Lang

uage

En

viro

nmen

t





zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS




Unix Services

zOS Nucleus


TCPIPVTAM





UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47





















zOS UNIX security




security









forkspawn

T P

T P

syscallUNIXkernel


T

B

P

B

BPXBATCH

exec

T PB

T PB

T P

TSOSTCBatch

JES Initiator

Any AS


= PROCESS= TCB

PT

A

B

C

D

T

BT

B





TCB

TCBTCB

TCB

TCB Process

Process

Process





Lang

uage

En

viro

nmen

t





zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS




Unix Services

zOS Nucleus


TCPIPVTAM





UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47











forkspawn

T P

T P

syscallUNIXkernel


T

B

P

B

BPXBATCH

exec

T PB

T PB

T P

TSOSTCBatch

JES Initiator

Any AS


= PROCESS= TCB

PT

A

B

C

D

T

BT

B





TCB

TCBTCB

TCB

TCB Process

Process

Process





Lang

uage

En

viro

nmen

t





zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS




Unix Services

zOS Nucleus


TCPIPVTAM





UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47






TCB

TCBTCB

TCB

TCB Process

Process

Process





Lang

uage

En

viro

nmen

t





zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS




Unix Services

zOS Nucleus


TCPIPVTAM





UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47





Lang

uage

En

viro

nmen

t





zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS




Unix Services

zOS Nucleus


TCPIPVTAM





UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47







zOSFile System

PARMLIB

SAF

ASSMC++ AS

AS AS




Unix Services

zOS Nucleus


TCPIPVTAM





UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47







UNIX Applications

Non-UNIXPrograms

MixedPrograms

UNIXPrograms



MVSData Sets HFS

zOS Applications

ZFS








zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47










zO

S U

NIX

kern

el

Cal

labl

e se

rvic

esMVS

(zOS)

CC++Programs

Shellcmds


UNIX INTERFACE

AssemblerPrograms

REXXTSOEishell


zOS INTERFACE



TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47




TCPIPnetwork

TN3270 WS

SNAnetwork

VTAM TCPIPTN-S

Sockets Interface

TSOE User

ShellOMVS

Toggle

rlogintelnet

SocketsApplications

3270

3270

SocketsApplications










Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47









Telnet

rlogin


IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47




IPLhellip


SMF amp RMF records

Trace data

RMFReports






OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47







OPENBATC JOB


MVS batch program


MVS batch program

End of job

Start of job




JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47





JOBEXECDD


STDERR

DD


PATHMODE=(SIRWXV)


USER=username




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47




Root ()

u usr notesdata

files

mail

mailfilensf





dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47






dir1

dir2

dir3myfileMYFILE


MyFile



bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47




bin dev etc u usr

IBMshlscatmkdir


profilercyylexc

tmp lib

joe bill jane


samples

OMVSVS26AR1ROOT


OMVSVS26AR1ROOT

OMVSVS26AR1ROOT

SMS or NON SMS VOL






tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47








tmp

TFS

Kernel

name = hfsroot

VOL 1

memory









Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47








Ani 6



Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47





Dir Domino User

Dir

Usr

FF

F

F

F


mountpoints

F

F

VOL 1

name = hfsroot

Nono

Dir

F

FDir

VOL 2

name =ussnono

HFS

Lpp

F FDir

VOL 3name = usslpp

HFS

notesdata

F FDir


ZFS




NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47





NotedfSMSRules




OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47






OMVS Interface


Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47




Ishell Interface



directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47





directoryfile

iISPF EDIT


OEDIT OBROWSE



OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47





OMVS

(kernel)







USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47









USS

Slide 4





zOS UNIX security

Forks and Spawns

Slide 12

Slide 13



Slide 18


Slide 20




Slide 24

Slide 25

Slide 26

Slide 27

Slide 28

Slide 29

Slide 31

Slide 32

Slide 33

Slide 34

Slide 35


Slide 39



Slide 45

Slide 46

Slide 47



SWG Competitive Project Office

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Transcript of SWG Competitive Project Office