Appendix B Mapping Between Drafts

POSIX 1.b Migration Guide

Mapping Between Drafts

This Appendix correlates chapters in the POSIX.4 Draft 9 and POSIX.4 Draft 14 (POSIX.1b) specifications. POSIX.1b chapters are organized differently than those in POSIX.4 Draft 9. The POSIX.1b is now organized as an amendment to the POSIX.1 standard.

Table B-1: Draft 9 to POSIX.1b Chapter Mapping

Draft 9 Chapter

Location

2. Constants and vars

General
Section 2, sysconf,
Section 4, "Process Environment"

fpathconf/pathconf
Section 5, "Files and Directories"

3. Binary Semaphores

Semaphores
Section 11, "Synchronization"
(also fork/exit/exec in Section 3)

4. Memory Locking

Memory Locking
Section 12, "Memory Management"

5. Shared Memory

Shared Memory
Section 12, "Memory Management" (also fork/exec/exit/close, Sections 3 and 6)

6. Priority Scheduling

Scheduling
Section 13, "Execution Scheduling" (also fork/exec in Section 3)

7. Asynchronous Events

Real-Time Signals Extension, Section 3, "Process Primitives"

8. Clocks and Timers

Section 14, "Clocks and Timers"

9. IPC Message Passing

Section 15, "Message Passing"
(also open/fork/exec, Section 3)

10. Synchronized I/O

Section 6
"Input and Output Primitives"

11. Asynchronous I/O

Section 6
"Input and Output Primitives"

12. Real-Time Files

No Equivalent

No Equivalent

File Mapping (mmap)
Section 12, "Memory Management" (also ftruncate, Section 5, "Files and Directories")

Table B-1: Draft 9 to POSIX.1b Chapter Mapping
Draft 9 Chapter	Location
2. Constants and vars	General Section 2, sysconf, Section 4, "Process Environment"
fpathconf/pathconf Section 5, "Files and Directories"
3. Binary Semaphores	Semaphores Section 11, "Synchronization" (also fork/exit/exec in Section 3)
4. Memory Locking	Memory Locking Section 12, "Memory Management"
5. Shared Memory	Shared Memory Section 12, "Memory Management" (also fork/exec/exit/close, Sections 3 and 6)
6. Priority Scheduling	Scheduling Section 13, "Execution Scheduling" (also fork/exec in Section 3)
7. Asynchronous Events	Real-Time Signals Extension, Section 3, "Process Primitives"
8. Clocks and Timers	Section 14, "Clocks and Timers"
9. IPC Message Passing	Section 15, "Message Passing" (also open/fork/exec, Section 3)
10. Synchronized I/O	Section 6 "Input and Output Primitives"
11. Asynchronous I/O	Section 6 "Input and Output Primitives"
12. Real-Time Files	No Equivalent
No Equivalent	File Mapping (mmap) Section 12, "Memory Management" (also ftruncate, Section 5, "Files and Directories")

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