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		Informal SVR4 contents of interest

SunFLASH Vol 12 #14					 December 1989 
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(from an internal memo)

Overall, the contents of SVR4 include the following items of interest.
More details will be made available soon. The reference document for
this is the Product Overview that comes with the product documentation
from AT&T.

What's in SVR4:
----------------------------------------

NFS
RFS
X11/NeWS
POSIX 1003.1/FIPS 151.1
X/Open XPG3
Xenix compatibility
ANSI C
BSD compatibility (eg. sockets)
RPC/XDR
virtual memory
file mapping (mmap)
shared libraries
dynamic linking
Streams
/proc file system
User-definable File system: fss with vnodes - VFS
Real-time features: realtime processes
DARPA protocol suites TCP/IP, FTP, Telenet, SMTP, TCP, UDP
8 bit clean
OPEN LOOK toolkits
ABI standards
OSI Transport Level Interface
Modular Terminal IO
File system compatibility with SysV and BSD
Memory-mapped IO

In detail, the contents of SVR4 are:

1. Operating System
Memory Management (VM)
	mapped files and shared memory (mmap)
	swapping to file
	portable (HAT)
Service Access Facility
STREAMS
	character i/o subsystem
		tty
		pty
		pipes (named, unnamed, mounted streams)
	BSD 4.2 non-block i/o (O_NONBLOCK)
	KMA for data blocks and other structures
Job Control
	POSIX 1003.1
Expanded Fundamental Types (EFT)

2. File System
	VFS
		vnodes/FSS merge
		directory name caching
	Types
		s5
		ufs
		rfs
		nfs
		/proc
		fifos
		specfs
	Symbolic Links	
	Directory Tree
	Directory Access Commands

3. Networking
TCP/IP (DARPA protocols)
RPC/XDR
Inetd
Sockets
	sockets over STREAMS
	select over poll()
NFS
RFS
	POSIX multi groups
	RFS/NFS administration
	symbolic links
	VM caching support
Network Selection
BNU

4. User Interface
Character User Interface
	FACE
	FMLI

Graphical User Interface
	OPEN LOOK
	Application Programming Interface Toolkits
		XView
		Xt+
		tNt
	X11/NeWS and X11

5. System Administration and Maintenance
	Backup/Restore
	Device Management Tools
	Software Installation Tools
	System Administration Menus (sysadm)

6. Security
	Shadow Password

7. Real Time
	User Controlled Process Scheduler
	High Resolution Timers
	Memory locking

8. Line Printer
	Networked

9. Diskless Support
	Hooks

10. Internationalization
	Commands - 8th bit clean and int'l code set
	Multi-byte character widths (libraries)
	National conventions (libraries)
	Message handling facility (libraries)

11. C Language
C Issue 5
	Extensible Linkage Format (ELF)
	Dynamic Linking
	ANSI C support/header files
	BSD extensions to the library and language

12. POSIX
	job control
	mkfifo
	non-blocking I/O
	rename
	signals
	termios
	typedefs

13. BSD Compatibility Package
	system calls and library routines
	commands

14. System V Standards and Specifications
	ABI
	SVID/SVVS Release 4.0
	XPG3
	DDI
	DKI