Linux Standard Base Specification for the IA32 Architecture 1.3

Linux Standard Base Specification for the IA32 Architecture 1.3
Copyright © 2001, 2002 Free Standards Group
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".
Portions of the text were taken from other copyrighted documents in accordance with the respective licenses of those documents.
Linux is a trademark of Linus Torvalds.
UNIX a registered trademark of the Open Group in the United States and other countries.
LSB is a trademark of the Free Standards Group in the USA and other countries.
Intel386 and Itanium are trademarks of Intel Corporation.
OpenGL is a registered trademark of Silicon Graphics, Inc.

Table of Contents
I. Introduction	000
1. Introduction	000
1.1. Introduction	000
1.2. Purpose	000
1.3. Related Standards	000
1.4. Relevant Libraries	000
1.5. How to Use this Standard	000
1.6. Definitions	000
1.7. Terminology	000
II. Low Level System Information	000
2. Machine Interface	000
2.1. Processor Architecture	000
2.2. Data Representation	000
2.2.1. Byte Ordering	000
2.2.2. Fundamental Types	000
2.2.3. Aggregates and Unions	000
2.2.4. Bit Fields	000
3. Function Calling Sequence	000
3.1. CPU Registers	000
3.2. Floating Point Registers	000
3.3. Stack Frame	000
3.4. Arguments	000
3.4.1. Integral/Pointer	000
3.4.2. Floating Point	000
3.4.3. Struct and Union Point	000
3.4.4. Variable Arguments	000
3.5. Return Values	000
3.5.1. Void	000
3.5.2. Integral/Pointer	000
3.5.3. Floating Point	000
3.5.4. Struct and Union Point	000
4. Operating System Interface	000
4.1. Virtual Address Space	000
4.1.1. Page Size	000
4.1.2. Virtual Address Assignments	000
4.1.3. Managing the PRocess Stack	000
4.1.4. Coding Guidlines	000
4.2. Processor Execution Mode	000
4.3. Exception Interface	000
4.3.1. Hardware Exception Types	000
4.3.2. Software Trap Types	000
4.4. Signal Delivery	000
4.4.1. Signal Handler Interface	000
5. Process Initialization	000
5.1. Special Registers	000
5.2. Process Stack (on entry)	000
5.3. Auxilliary Vectors	000
5.4. Environment	000
6. Coding Examples	000
6.1. Code Model Overview/Architecture Constraints	000
6.2. Position-Independent Fucntion Prologue	000
6.3. Data Objects	000
6.3.1. Absolute Load & Store	000
6.3.2. Position Relative Load & Store	000
6.4. Function Calls	000
6.4.1. Absolute Direct Function Call	000
6.4.2. Absolute Indirect Function Call	000
6.4.3. Position-Independent Direct Function Call	000
6.4.4. Position-Independent Indirect Function Call	000
6.5. Branching	000
6.5.1. Branch Instruction	000
6.5.2. Absolute switch() code	000
6.5.3. Position-Independent switch() code	000
7. C Stack Frame	000
7.1. Variable Argument List	000
7.2. Dynamic Allocation of Stack Space	000
8. Debug Information	000
III. Object Format	000
9. ELF Header	000
9.1. Machine Information	000
9.1.1. File Class	000
9.1.2. Data Encoding	000
9.1.3. OS Identification	000
9.1.4. Processor Identification	000
9.1.5. Processor Specific Flags	000
10. Special Sections	000
10.1. Special Sections	000
10.1.1. ELF Special Sections	000
10.1.2. Addition Special Sections	000
11. Symbol Table	000
12. Relocation	000
12.1. Relocation Types	000
IV. Program Loading and Dynamic Linking	000
13. Program Header	000
13.1. Types	000
13.2. Flags	000
14. Program Loading	000
15. Dynamic Linking	000
15.1. Program Interpreter/Dynamic Linker	000
15.2. Dynamic Section	000
15.3. Global Offset Table	000
15.4. Shared Object Dependencies	000
15.5. Function Addresses	000
15.6. Procedure Linkage Table	000
15.7. Initialization and Termination Functions	000
V. Base Libraries	000
16. Libraries	000
16.1. Interfaces for libc	000
16.1.1. RPC	000
16.1.2. System Calls	000
16.1.3. Standard I/O	000
16.1.4. Signal Handling	000
16.1.5. Localization Functions	000
16.1.6. Socket Interface	000
16.1.7. Wide Characters	000
16.1.8. String Functions	000
16.1.9. IPC Functions	000
16.1.10. Regular Expressions	000
16.1.11. Character Type Functions	000
16.1.12. Time Manipulation	000
16.1.13. Terminal Interface Functions	000
16.1.14. System Database Interface	000
16.1.15. Language Support	000
16.1.16. Large File Support	000
16.1.17. Standard Library	000
16.2. Data Definitions for libc	000
16.2.1. errno.h	000
16.2.2. inttypes.h	000
16.2.3. limits.h	000
16.2.4. setjmp.h	000
16.2.5. signal.h	000
16.2.6. stddef.h	000
16.2.7. sys/ioctl.h	000
16.2.8. sys/ipc.h	000
16.2.9. sys/mman.h	000
16.2.10. sys/msg.h	000
16.2.11. sys/sem.h	000
16.2.12. sys/shm.h	000
16.2.13. sys/stat.h	000
16.2.14. sys/statvfs.h	000
16.2.15. sys/types.h	000
16.2.16. termios.h	000
16.2.17. ucontext.h	000
16.2.18. unistd.h	000
16.3. Interfaces Definitions for libc	000
__divdi3	000
ioperm	000
iopl	000
16.4. Interfaces for libm	000
16.4.1. Math	000
16.5. Data Definitions for libm	000
16.6. Interfaces for libpthread	000
16.6.1. Posix Threads	000
16.7. Data Definitions for libpthread	000
16.8. Interfaces for libdl	000
16.8.1. Dynamic Loader	000
16.9. Data Definitions for libdl	000
16.10. Interfaces for libcrypt	000
16.10.1. Encryption	000
16.11. Data Definitions for libcrypt	000
VI. Package Format and Installation	000
17. Software Installation	000
17.1. Package Architecture Considerations	000
A. Alphabetical Listing of Interfaces	000
A.1. libc	000
B. GNU Free Documentation License	000
B.1. PREAMBLE	000
B.2. APPLICABILITY AND DEFINITIONS	000
B.3. VERBATIM COPYING	000
B.4. COPYING IN QUANTITY	000
B.5. MODIFICATIONS	000
B.6. COMBINING DOCUMENTS	000
B.7. COLLECTIONS OF DOCUMENTS	000
B.8. AGGREGATION WITH INDEPENDENT WORKS	000
B.9. TRANSLATION	000
B.10. TERMINATION	000
B.11. FUTURE REVISIONS OF THIS LICENSE	000
B.12. How to use this License for your documents	000

List of Tables
1-1. Related Standards	000
1-2. Standard Library Names	000
2-1. Scalar Types	000
10-1. ELF Special Sections	000
10-2. Additional Special Sections	000
16-1. libc Definition	000
16-2. libc - RPC Function Interfaces	000
16-3. libc - System Calls Function Interfaces	000
16-4. libc - System Calls Deprecated Function Interfaces	000
16-5. libc - Standard I/O Function Interfaces	000
16-6. libc - Standard I/O Deprecated Function Interfaces	000
16-7. libc - Standard I/O Data Interfaces	000
16-8. libc - Signal Handling Function Interfaces	000
16-9. libc - Signal Handling Data Interfaces	000
16-10. libc - Localization Functions Function Interfaces	000
16-11. libc - Localization Functions Deprecated Function Interfaces	000
16-12. libc - Localization Functions Data Interfaces	000
16-13. libc - Socket Interface Function Interfaces	000
16-14. libc - Wide Characters Function Interfaces	000
16-15. libc - String Functions Function Interfaces	000
16-16. libc - IPC Functions Function Interfaces	000
16-17. libc - Regular Expressions Function Interfaces	000
16-18. libc - Regular Expressions Data Interfaces	000
16-19. libc - Character Type Functions Function Interfaces	000
16-20. libc - Character Type Functions Data Interfaces	000
16-21. libc - Time Manipulation Function Interfaces	000
16-22. libc - Time Manipulation Data Interfaces	000
16-23. libc - Terminal Interface Functions Function Interfaces	000
16-24. libc - System Database Interface Function Interfaces	000
16-25. libc - System Database Interface Deprecated Function Interfaces	000
16-26. libc - Language Support Function Interfaces	000
16-27. libc - Large File Support Function Interfaces	000
16-28. libc - Large File Support Deprecated Function Interfaces	000
16-29. libc - Standard Library Function Interfaces	000
16-30. libc - Standard Library Data Interfaces	000
16-31. libm Definition	000
16-32. libm - Math Function Interfaces	000
16-33. libm - Math Data Interfaces	000
16-34. libpthread Definition	000
16-35. libpthread - Posix Threads Function Interfaces	000
16-36. libdl Definition	000
16-37. libcrypt Definition	000
A-1. libc Function Interfaces	000

I. Introduction

Chapter 1. Introduction
1.1. Introduction
This is version 1.3 of the Linux Standard Base Specification for the IA32 Architecture. An implementation of this version of the specification may not claim to be an implementation of the Linux Standard Base unless it has successfully completed the compliance process as defined by the Free Standards Group.
1.2. Purpose
The Linux Standard Base (LSB) defines a system interface for compiled applications and a minimal environment for support of installation scripts. Its purpose is to enable a uniform industry standard environment for high-volume applications conforming to the LSB.
The LSB defines a binary interface for application programs that are compiled and packaged for LSB-conforming implementations on many different hardware architectures. Since a binary specification must include information specific to the computer processor architecture for which it is intended, it is not possible for a single document to specify the interface for all possible LSB-conforming implementations. Therefore, the LSB is a family of specifications, rather than a single one.
The LSB is composed of two basic parts: A common part of the specification describes those parts of the interface that remain constant across all hardware implementations of the LSB, and an architecture-specific part of the specification describes the parts of the specification that are specific to a particular processor architecture. Together, the generic LSB and the architecture-specific supplement for a single hardware architecture provide a complete interface specification for compiled application programs on systems that share a common hardware architecture.
This document is the architecture-specific supplement. It must be used in conjunction with the generic LSB. This document provides architecture-specific information that supplements the generic LSB as well as additional information that is not found in the generic LSB.
This document should be used in conjunction with the documents it references. This document enumerates the system components it includes, but descriptions of those components may be included entirely or partly in this document, partly in other documents, or entirely in other reference documents. For example, the section that describes system service routines includes a list of the system routines supported in this interface, formal declarations of the data structures they use that are visible to applications, and a pointer to the underlying referenced specification for information about the syntax and semantics of each call. Only those routines not described in standards referenced by this document, or extensions to those standards, are described in the detail. Information referenced in this way is as much a part of this document as is the information explicitly included here.
1.3. Related Standards
The specifications listed below are referenced in whole or in part by the Linux Standard Base. Such references may be normative or non-normative; a reference to specification shall only be considered normative if it is explicitly cited as such. The LSB may make normative references to a portion of these specifications (that is, to define a specific function or group of functions); in such cases, only the explicitly referenced portion of the specification is to be considered normative.
Table 1-1. Related Standards
System V Application Binary Interface - DRAFT - 22 June 2000	http://www.caldera.com/developers/gabi/2000-07-17/contents.html	
DWARF Debugging Information Format, Revision 2.0.0 (July 27, 1993)		
Filesystem Hierarchy Standard (FHS) 2.2	http://www.pathname.com/fhs/	
IEEE Standard for Binary Floating-Point Arithmetic	http://www.ieee.org/	
System V Application Binary Interface, Edition 4.1	http://www.caldera.com/developers/devspecs/gabi41.pdf	
The IA-32 Intel® Architecture Software Developer's Manual Volume 1: Basic Architecture	http://developer.intel.com/design/pentium4/manuals/245470.htm	
The IA-32 Intel® Architecture Software Developer's Manual Volume 2: Instruction Set Reference	http://developer.intel.com/design/pentium4/manuals/245471.htm	
The IA-32 Intel® Architecture Software Developer's Manual Volume 3: System Programming Guide	http://developer.intel.com/design/pentium4/manuals/245472.htm	
System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition	http://www.caldera.com/developers/devspecs/abi386-4.pdf	
ISO/IEC 9899: 1990, Programming Languages --C		
ISO/IEC 9899: 1999, Programming Languages --C		
ISO/IEC 14882: 1998(E) Programming languages --C++		
Linux Assigned Names And Numbers Authority	http://www.lanana.org/	
Large File Support	http://www.UNIX-systems.org/version2/whatsnew/lfs20mar.html	
LI18NUX 2000 Globalization Specification, Version 1.0 with Amendment 4	http://www.li18nux.org/docs/html/LI18NUX-2000-amd4.htm	
Linux Standard Base	http://www.linuxbase.org/spec/	
OpenGL® Application Binary Interface for Linux	http://oss.sgi.com/projects/ogl-sample/ABI/	
OSF-RFC 86.0	http://www.opengroup.org/tech/rfc/mirror-rfc/rfc86.0.txt	
IEEE Std POSIX 1003.2-1992 (ISO/IEC 9945-2:1993)	http://www.ieee.org/	
POSIX 1003.1c	http://www.ieee.org/	
RFC 1952: GZIP file format specification version 4.3	http://www.ietf.org/rfc/rfc1952.txt	
RFC 2440: OpenPGP Message Format		
CAE Specification, May 1996, X/Open Curses, Issue 4, Version 2 (ISBN: 1-85912-171-3, C610), plus Corrigendum U018	http://www.opengroup.org/publications/catalog/un.htm	
CAE Specification, January 1997, System Interface Definitions (XBD),Issue 5 (ISBN: 1-85912-186-1, C605)	http://www.opengroup.org/publications/catalog/un.htm	
CAE Specification, January 1997, Commands and Utilities (XCU), Issue 5 (ISBN: 1-85912-191-8, C604)	http://www.opengroup.org/publications/catalog/un.htm	
CAE Specification, February 1997, Networking Services (XNS), Issue 5(ISBN: 1-85912-165-9, C523)	http://www.opengroup.org/	
CAE Specification, January 1997, System Interfaces and Headers (XSH),Issue 5 (ISBN: 1-85912-181-0, C606)	http://www.opengroup.org/publications/catalog/un.htm	
The Single UNIX® Specification(SUS) Version 1 (UNIX 95) System Interfaces & Headers	http://www.opengroup.org/publications/catalog/un.htm	
The Single UNIX® Specification(SUS) Version 3	http://www.unix.org/version3/	
System V Interface Definition, Issue 3 (ISBN 0201566524)		
System V Interface Definition,Fourth Edition		
Double Buffer Extension Library	http://www.x.org/	
X Display Power Management Signaling (DPMS) Extension, Library Specification	http://www.x.org/	
X Record Extension Library	http://www.x.org/	
Security Extension Specification, Version 7.1	http://www.x.org/	
X Nonrectangular Window Shape Extension Library Version 1.0	http://www.x.org/	
MIT-SHM--The MIT Shared Memory Extension	http://www.x.org/	
X Synchronization Extension Library	http://www.x.org/	
XTEST Extension Library	http://www.x.org/	
X11R6.4 X Inter-Client Exchange (ICE) Protocol	http://www.x.org/	
X11R6.4 X11 Input Extension Library	http://www.x.org/	
X11R6.4 Xlib - C library	http://www.x.org/	
X/Open Portability Guide, Issue 4	http://www.opengroup.org/	
X11R6.4 X Session Management Library	http://www.x.org/	
X11R6.4 X Toolkit Intrinsics	http://www.x.org/	
zlib 1.1.3 Manual	http://www.gzip.org/zlib/	

1.4. Relevant Libraries
The libraries listed here shall be available on a Linux Standard Base system. This list is an addition to the list in the general specification.
Table 1-2. Standard Library Names
Library	Runtime Name	
libm	libm.so.6	
libdl	libdl.so.2	
libcrypt	libcrypt.so.1	
libc	libc.so.6	
libpthread	libpthread.so.0	
proginterp	/lib/ld-lsb.so.1	

These libraries will be in an implementation-dependent directory which the dynamic linker will search by default.
1.5. How to Use this Standard
The complete LSB specification is composed of a generic LSB specification and this supplemental processor-specific specification. These two documents constitute a specification that should be used in conjunction with the publicly-available standards documents it references. The LSB enumerates the system components it includes, but descriptions of those components may be included entirely in the LSB, partly in the LSB and partly in other documents, or entirely in other reference documents.
1.6. Definitions
gLSB
 	The common part of the LSB Specification that describes those parts of the interface that remain constant across all hardware implementations of the LSB.
archLSB
 	The architectural part of the LSB Specification which describes the specific parts of the interface that are platform specific. The archLSB is complementary to the gLSB.
LSB Implementation Conformance 
 	An implementation satisfying the following requirements: 
	1.	The implementation shall implement fully the architecture described in the hardware manual for the target processor architecture. 
	2.	The implementation shall be capable of executing compiled applications having the format and using the system interfaces described in this document.
	3.	The implementation shall provide libraries containing the interfaces specified by this document, and shall provide a dynamic linking mechanism that allows these interfaces to be attached to applications at runtime. All the interfaces shall behave as specified in this document.
	4.	The map of virtual memory provided by the implementation shall conform to the requirements of this document. 
	5.	The implementation's low-level behavior with respect to function call linkage, system traps, signals, and other such activities shall conform to the formats described in this document. 
	6.	The implementation shall provide all of the mandatory interfaces in their entirety. 
	7.	The implementation may provide one or more of the optional interfaces. Each optional interface that is provided shall be provided in its entirety. The product documentation shall state which optional interfaces are provided. 
	8.	The implementation shall provide all files and utilities specified as part of this document in the format defined here and in other referenced documents. All commands and utilities shall behave as required by this document. The implementation shall also provide all mandatory components of an application's runtime environment that are included or referenced in this document. 
	9.	The implementation, when provided with standard data formats and values at a named interface, shall provide the behavior defined for those values and data formats at that interface. However, a conforming implementation may consist of components which are separately packaged and/or sold. For example, a vendor of a conforming implementation might sell the hardware, operating system, and windowing system as separately packaged items.
	10.	The implementation may provide additional interfaces with different names. It may also provide additional behavior corresponding to data values outside the standard ranges, for standard named interfaces.
LSB Application Conformance 
 	An application with the following characteristics: 
	1.	Its executable files are either shell scripts or object files in the format defined for the Object File Format system interface.
	2.	Its object files participate in dynamic linking as defined in the Program Loading and Linking System interface.
	3.	It employs only the instructions, traps, and other low-level facilities defined in the Low-Level System interface as being for use by applications.
	4.	If it requires any optional interface defined in this document in order to be installed or to execute successfully, the requirement for that optional interface is stated in the application's documentation. 
	5.	It does not use any interface or data format that is not required to be provided by a conforming implementation, unless: 
•	If such an interface or data format is supplied by another application through direct invocation of that application during execution, that application is in turn an LSB conforming application.
•	The use of that interface or data format, as well as its source, is identified in the documentation of the application. 
	6.	It must not use any values for a named interface that are reserved for vendor extensions. 
A strictly conforming application does not require or use any interface, facility, or implementation-defined extension that is not defined in this document in order to be installed or to execute successfully. 
Rationale 
 	An LSB conforming application is expected to have no dependencies on any vendor extensions to this document. The most common such extensions are additional function entry points and additional libraries other than the ones defined in this document. If an application requires such extensions, it is not portable, since other LSB conforming implementations may not provide those extensions. 
An LSB conforming application is required to use system services on the implementation on which it is running, rather than importing system routines from some other implementation. Thus, it must link dynamically to any routines in the implementation that perform system traps to kernel services. 
It is to be expected that some applications may be companion applications to other applications. For example, a query application may be a companion to a database application; a preprocessor may be an adjunct to one or more compilers; a data reformatter may convert data from one document manager to another. In such cases, the application may or may not be LSB conforming, regardless of whether the other application on which it is dependent is LSB conforming. If such an application merely uses data produced by another application, the application's compliance is independent of the other application's compliance. If such an application actually invokes another application during execution (as, for example, a third-party math library), the invoking application is LSB conforming only if it also constitutes a LSB conforming application in combination with the invoked application. 
Shell Script
 	A file that is read by an interpreter (e.g., awk). The first line of the shell script includes a reference to its interpreter binary.
1.7. Terminology
can
 	Describes a permissible optional feature or behavior available to the user or application. The feature or behavior is mandatory for an implementation that conforms to this document. An application can rely on the existence of the feature or behavior.
implementation-defined
 	Describes a value or behavior that is not defined by this document but is selected by an implementor. The value or behavior may vary among implementations that conform to this document. An application should not rely on the existence of the value or behavior. An application that relies on such a value or behavior cannot be assured to be portable across conforming implementations. The implementor shall document such a value or behavior so that it can be used correctly by an application.
may
 	Describes a feature or behavior that is optional for an implementation that conforms to this document. An application should not rely on the existence of the feature or behavior. An application that relies on such a feature or behavior cannot be assured to be portable across conforming implementations.
To avoid ambiguity, the opposite of may is expressed as need not, instead of may not.
must
 	Describes a feature or behavior that is mandatory for an application or user. An implementation that conforms to this document shall support this feature or behavior.
shall
 	Describes a feature or behavior that is mandatory for an implementation that conforms to this document. An application can rely on the existence of the feature or behavior.
should
 	For an implementation that conforms to this document, describes a feature or behavior that is recommended but not mandatory. An application should not rely on the existence of the feature or behavior. An application that relies on such a feature or behavior cannot be assured to be portable across conforming implementations.
For an application, describes a feature or behavior that is recommended programming practice for optimum portability.
undefined
 	Describes the nature of a value or behavior not defined by this document which results from use of an invalid program construct or invalid data input. The value or behavior may vary among implementations that conform to this document. An application should not rely on the existence or validity of the value or behavior. An application that relies on any particular value or behavior cannot be assured to be portable across conforming implementations.
unspecified
 	Describes the nature of a value or behavior not specified by this document which results from use of a valid program construct or valid data input. The value or behavior may vary among implementations that conform to this document. An application should not rely on the existence or validity of the value or behavior. An application that relies on any particular value or behavior cannot be assured to be portable across conforming implementations.
will
 	Same meaning as shall; shall is the preferred term.

II. Low Level System Information

Chapter 2. Machine Interface
2.1. Processor Architecture
The IA32 Architecture is specified by the following documents 
•	Intel Architecture Software Developer's Manual, Volume 1: Basic Architecture
•	Intel Architecture Software Developer's Manual, Volume 2: Instruction Set Reference Manual
•	Intel Architecture Software Developer's Manual, Volume 3: System Programming Guide
Only the features of the Intel486 processor instruction set may be assumed to be present. An application is responsible for determining if any additional instruction set features are available before using those additional features. If a feature is not present, then the application may not use it.
Applications conforming to this specification must provide feedback to the user if a feature that is required for correct execution of the application is not present. Applications conforming to this specification should attempt to execute in a diminished capacity if a required instruction set feature is not present.
This specfication does not provide any performance guarantees of a conforming system. A system conforming to this specification may be implemented in either hardware or software.
2.2. Data Representation
LSB-conforming applications shall use the data representation as defined in Chapter 3 of the System V Application Binary Interface - Intel386 Architecture Processor Supplement.
2.2.1. Byte Ordering
2.2.2. Fundamental Types
In addition to the fundamental types specified in Chapter 3 of the System V Application Binary Interface - Intel386 Architecture, a 64 bit data type is defined here. 
Table 2-1. Scalar Types
Type	C	sizeof	Alignment (bytes)	IntelI386 Architecture	
Integral	long long	8	4	signed double word	
	signed long long	

	
	unsigned long long	8	4	unsigned double word	

2.2.3. Aggregates and Unions
2.2.4. Bit Fields

Chapter 3. Function Calling Sequence
LSB-conforming applications shall use the function calling sequence as defined in Chapter 3 of the System V Application Binary Interface - Intel386 Architecture Processor Supplement.
3.1. CPU Registers
3.2. Floating Point Registers
3.3. Stack Frame
3.4. Arguments
3.4.1. Integral/Pointer
3.4.2. Floating Point
3.4.3. Struct and Union Point
3.4.4. Variable Arguments
3.5. Return Values
3.5.1. Void
3.5.2. Integral/Pointer
3.5.3. Floating Point
3.5.4. Struct and Union Point

Chapter 4. Operating System Interface
LSB-conforming applications shall use the Operating System Interfaces as defined in Chapter 3 of the System V Application Binary Interface - Intel386 Architecture Processor Supplement.
4.1. Virtual Address Space
4.1.1. Page Size
4.1.2. Virtual Address Assignments
4.1.3. Managing the PRocess Stack
4.1.4. Coding Guidlines
4.2. Processor Execution Mode
4.3. Exception Interface
4.3.1. Hardware Exception Types
4.3.2. Software Trap Types
4.4. Signal Delivery
4.4.1. Signal Handler Interface

Chapter 5. Process Initialization
LSB-conforming applications shall use the Process Initialization as defined in Chapter 3 of the System V Application Binary Interface - Intel386 Architecture Processor Supplement.
5.1. Special Registers
5.2. Process Stack (on entry)
5.3. Auxilliary Vectors
5.4. Environment

Chapter 6. Coding Examples
LSB-conforming applications may implement fundamental operations using the Coding Examples as defined in Chapter 3 of the System V Application Binary Interface - Intel386 Architecture Processor Supplement.
6.1. Code Model Overview/Architecture Constraints
6.2. Position-Independent Fucntion Prologue
6.3. Data Objects
6.3.1. Absolute Load & Store
6.3.2. Position Relative Load & Store
6.4. Function Calls
6.4.1. Absolute Direct Function Call
6.4.2. Absolute Indirect Function Call
6.4.3. Position-Independent Direct Function Call
6.4.4. Position-Independent Indirect Function Call
6.5. Branching
6.5.1. Branch Instruction
6.5.2. Absolute switch() code
6.5.3. Position-Independent switch() code

Chapter 7. C Stack Frame
7.1. Variable Argument List
7.2. Dynamic Allocation of Stack Space

Chapter 8. Debug Information
The LSB does not currently specify the format of Debug information.

III. Object Format
LSB-conforming implementations shall support an object file , called Executable and Linking Format (ELF) as defined by the System V Application Binary Interface, Edition 4.1 , System V Application Binary Interface - DRAFT - 22 June 2000 , System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition and as supplemented by the Linux Standard Base and this document.

Chapter 9. ELF Header
9.1. Machine Information
LSB-conforming applications shall use the Machine Information as defined in Chapter 4 of the System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition.
9.1.1. File Class
9.1.2. Data Encoding
9.1.3. OS Identification
9.1.4. Processor Identification
9.1.5. Processor Specific Flags

Chapter 10. Special Sections
10.1. Special Sections
Various sections hold program and control information. Sections in the lists bel ow are used by the system and have the indicated types and attributes.
10.1.1. ELF Special Sections
The following sections are defined in the System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition. 
Table 10-1. ELF Special Sections
Name	Type	Attributes	
.got	SHT_PROGBITS	SHF_ALLOC+SHF_WRITE	
.plt	SHT_PROGBITS	SHF_ALLOC+SHF_EXECINSTR	

.got
 	This section holds the global offset table. See `Coding Examples' in Chapter 3, `Special Sections' in Chapter 4, and `Global Offset Table' in Chapter 5 of the processor supplement for more information.
.plt
 	This section holds the procedure linkage table.
10.1.2. Addition Special Sections
The following additional sections are defined here. 
Table 10-2. Additional Special Sections
Name	Type	Attributes	
.rel.dyn	SHT_REL	SHF_ALLOC	

.rel.dyn
 	This section holds relocation information, as described in `Relocation'. These relocations are applied to the .dyn section.

Chapter 11. Symbol Table
LSB-conforming applications shall use the Symbol Table as defined in Chapter 4 of the System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition.

Chapter 12. Relocation
LSB-conforming applications shall use Relocations as defined in Chapter 4 of the System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition.
12.1. Relocation Types

IV. Program Loading and Dynamic Linking
LSB-conforming implementations shall support the object file information and system actions that create running programs as specified in the System V Application Binary Interface, Edition 4.1 , System V Application Binary Interface - DRAFT - 22 June 2000 , System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition and as supplemented by the Linux Standard Base and this document.

Chapter 13. Program Header
13.1. Types
13.2. Flags

Chapter 14. Program Loading

Chapter 15. Dynamic Linking
15.1. Program Interpreter/Dynamic Linker
The LSB specifies the Program Interpreter to be /lib/ld-lsb.so.1.
15.2. Dynamic Section
The following dynamic entries are defined in the System V Application Binary Interface - Intel386™ Architecture Processor Supplement, Fourth Edition. 
DT_PLTGOT
 	On the Intel386 architecture, this entrys d_ptr member gives the address of the first entry in the global offset table.
15.3. Global Offset Table
15.4. Shared Object Dependencies
15.5. Function Addresses
15.6. Procedure Linkage Table
15.7. Initialization and Termination Functions

V. Base Libraries

Chapter 16. Libraries
An LSB-conforming implementation shall support some base libraries which provide interfaces for accessing the operating system, processor and other hardware in the system.
Interfaces that are unique to the IA32 platform are defined here. This section should be used in conjunction with the corresponding section in the Linux Standard Base Specification.
16.1. Interfaces for libc
Table 16-1. libc Definition
Library:	libc	
SONAME:	libc.so.6	

The behavior of the interfaces in this library is specified by the following standards.
ISO/IEC 9899: 1999, Programming Languages --C1	
Large File Support2	
Linux Standard Base3	
IEEE Std POSIX.1-1996 [ISO/IEC 9945-1:1996]4	
CAE Specification, February 1997, Networking Services (XNS), Issue 5(ISBN: 1-85912-165-9, C523)5	
CAE Specification, January 1997, System Interfaces and Headers (XSH),Issue 5 (ISBN: 1-85912-181-0, C606)6	
The Single UNIX® Specification(SUS) Version 37	
System V Interface Definition, Issue 3 (ISBN 0201566524)8	
System V Interface Definition,Fourth Edition9	

16.1.1. RPC
Table 16-2. libc - RPC Function Interfaces
authnone_create(GLIBC_2.0)9	svc_getreqset(GLIBC_2.0)8	xdr_bytes(GLIBC_2.0)8	xdr_opaque_auth(GLIBC_2.0)8	xdr_union(GLIBC_2.0)8	
clnt_create(GLIBC_2.0)9	svcerr_auth(GLIBC_2.0)8	xdr_callhdr(GLIBC_2.0)8	xdr_pointer(GLIBC_2.0)8	xdr_vector(GLIBC_2.0)8	
clnt_pcreateerror(GLIBC_2.0)9	svcerr_decode(GLIBC_2.0)8	xdr_callmsg(GLIBC_2.0)8	xdr_reference(GLIBC_2.0)8	xdr_void(GLIBC_2.0)8	
clnt_perrno(GLIBC_2.0)9	svcerr_noproc(GLIBC_2.0)8	xdr_char(GLIBC_2.0)8	xdr_rejected_reply(GLIBC_2.0)8	xdr_wrapstring(GLIBC_2.0)8	
clnt_perror(GLIBC_2.0)9	svcerr_noprog(GLIBC_2.0)8	xdr_double(GLIBC_2.0)8	xdr_replymsg(GLIBC_2.0)8	xdrmem_create(GLIBC_2.0)8	
clnt_spcreateerror(GLIBC_2.0)9	svcerr_progvers(GLIBC_2.0)8	xdr_enum(GLIBC_2.0)8	xdr_short(GLIBC_2.0)8	xdrrec_create(GLIBC_2.0)8	
clnt_sperrno(GLIBC_2.0)9	svcerr_systemerr(GLIBC_2.0)8	xdr_float(GLIBC_2.0)8	xdr_string(GLIBC_2.0)8	xdrrec_eof(GLIBC_2.0)8	
clnt_sperror(GLIBC_2.0)9	svcerr_weakauth(GLIBC_2.0)8	xdr_free(GLIBC_2.0)8	xdr_u_char(GLIBC_2.0)8	
	
getdomainname(GLIBC_2.0)3	xdr_accepted_reply(GLIBC_2.0)8	xdr_int(GLIBC_2.0)8	xdr_u_int(GLIBC_2.0)3	
	
key_decryptsession(GLIBC_2.1)8	xdr_array(GLIBC_2.1)8	xdr_long(GLIBC_2.1)8	xdr_u_long(GLIBC_2.1)8	
	
setdomainname(GLIBC_2.0)3	xdr_bool(GLIBC_2.0)8	xdr_opaque(GLIBC_2.0)8	xdr_u_short(GLIBC_2.0)8	

16.1.2. System Calls
Table 16-3. libc - System Calls Function Interfaces
__fxstat(GLIBC_2.0)3	fchown(GLIBC_2.0)6	initgroups(GLIBC_2.0)3	read(GLIBC_2.0)6	setrlimit64(GLIBC_2.0)2	
__getpgid(GLIBC_2.0)3	fcntl(GLIBC_2.0)3	ioctl(GLIBC_2.0)3	readdir(GLIBC_2.0)6	setsid(GLIBC_2.0)6	
__lxstat(GLIBC_2.0)3	fdatasync(GLIBC_2.0)6	kill(GLIBC_2.0)3	readdir_r(GLIBC_2.0)6	setuid(GLIBC_2.0)6	
__xmknod(GLIBC_2.0)3	flock(GLIBC_2.0)3	killpg(GLIBC_2.0)6	readlink(GLIBC_2.0)6	sleep(GLIBC_2.0)6	
__xstat(GLIBC_2.0)3	fork(GLIBC_2.0)6	lchown(GLIBC_2.0)6	readv(GLIBC_2.0)6	statfs(GLIBC_2.0)3	
access(GLIBC_2.0)6	fstatfs(GLIBC_2.0)3	link(GLIBC_2.0)6	rename(GLIBC_2.0)6	statvfs(GLIBC_2.0)6	
acct(GLIBC_2.0)3	fstatvfs(GLIBC_2.0)6	lockf(GLIBC_2.0)6	rmdir(GLIBC_2.0)6	stime(GLIBC_2.0)3	
alarm(GLIBC_2.0)6	fsync(GLIBC_2.0)6	lseek(GLIBC_2.0)6	sbrk(GLIBC_2.0)6	symlink(GLIBC_2.0)6	
brk(GLIBC_2.0)6	ftime(GLIBC_2.0)6	mkdir(GLIBC_2.0)6	sched_get_priority_max(GLIBC_2.0)6	sync(GLIBC_2.0)6	
chdir(GLIBC_2.0)6	ftruncate(GLIBC_2.0)6	mkfifo(GLIBC_2.0)6	sched_get_priority_min(GLIBC_2.0)6	sysconf(GLIBC_2.0)6	
chmod(GLIBC_2.0)6	getcontext(GLIBC_2.0)6	mlock(GLIBC_2.0)6	sched_getparam(GLIBC_2.0)6	time(GLIBC_2.0)6	
chown(GLIBC_2.1)6	getegid(GLIBC_2.1)6	mlockall(GLIBC_2.1)6	sched_getscheduler(GLIBC_2.1)6	times(GLIBC_2.1)6	
chroot(GLIBC_2.0)6	geteuid(GLIBC_2.0)6	mmap(GLIBC_2.0)6	sched_rr_get_interval(GLIBC_2.0)6	truncate(GLIBC_2.0)6	
clock(GLIBC_2.0)6	getgid(GLIBC_2.0)6	mprotect(GLIBC_2.0)6	sched_setparam(GLIBC_2.0)6	ulimit(GLIBC_2.0)6	
close(GLIBC_2.0)6	getgroups(GLIBC_2.0)6	msync(GLIBC_2.0)6	sched_setscheduler(GLIBC_2.0)6	umask(GLIBC_2.0)6	
closedir(GLIBC_2.0)6	getitimer(GLIBC_2.0)6	munlock(GLIBC_2.0)6	sched_yield(GLIBC_2.0)6	uname(GLIBC_2.0)6	
creat(GLIBC_2.0)6	getloadavg(GLIBC_2.0)3	munlockall(GLIBC_2.0)6	select(GLIBC_2.0)5	unlink(GLIBC_2.0)3	
dup(GLIBC_2.0)6	getpagesize(GLIBC_2.0)6	munmap(GLIBC_2.0)6	setcontext(GLIBC_2.0)6	utime(GLIBC_2.0)6	
dup2(GLIBC_2.0)6	getpgid(GLIBC_2.0)6	nanosleep(GLIBC_2.0)6	setegid(GLIBC_2.0)3	utimes(GLIBC_2.0)6	
execl(GLIBC_2.0)6	getpgrp(GLIBC_2.0)6	nice(GLIBC_2.0)3	seteuid(GLIBC_2.0)3	vfork(GLIBC_2.0)6	
execle(GLIBC_2.0)6	getpid(GLIBC_2.0)6	open(GLIBC_2.0)6	setgid(GLIBC_2.0)6	wait(GLIBC_2.0)6	
execlp(GLIBC_2.0)6	getppid(GLIBC_2.0)6	opendir(GLIBC_2.0)6	setitimer(GLIBC_2.0)6	wait3(GLIBC_2.0)3	
execv(GLIBC_2.0)6	getpriority(GLIBC_2.0)6	pathconf(GLIBC_2.0)6	setpgid(GLIBC_2.0)6	wait4(GLIBC_2.0)3	
execve(GLIBC_2.0)6	getrlimit(GLIBC_2.0)6	pause(GLIBC_2.0)6	setpgrp(GLIBC_2.0)6	waitid(GLIBC_2.0)3	
execvp(GLIBC_2.0)6	getrusage(GLIBC_2.0)6	pipe(GLIBC_2.0)6	setpriority(GLIBC_2.0)6	waitpid(GLIBC_2.0)3	
exit(GLIBC_2.0)6	getsid(GLIBC_2.0)6	poll(GLIBC_2.0)6	setregid(GLIBC_2.0)6	write(GLIBC_2.0)6	
fchdir(GLIBC_2.0)6	getuid(GLIBC_2.0)6	pread(GLIBC_2.0)6	setreuid(GLIBC_2.0)6	writev(GLIBC_2.0)6	
fchmod(GLIBC_2.0)6	getwd(GLIBC_2.0)6	pwrite(GLIBC_2.0)6	setrlimit(GLIBC_2.0)6	

Table 16-4. libc - System Calls Deprecated Function Interfaces
fstatfs(GLIBC_2.0)3	statfs(GLIBC_2.0)3	waitid(GLIBC_2.0)3	

16.1.3. Standard I/O
Table 16-5. libc - Standard I/O Function Interfaces
_IO_feof(GLIBC_2.0)3	fgetc(GLIBC_2.0)6	fseeko(GLIBC_2.0)6	putc(GLIBC_2.0)6	snprintf(GLIBC_2.0)6	
_IO_getc(GLIBC_2.0)3	fgetpos(GLIBC_2.0)6	fsetpos(GLIBC_2.0)6	putc_unlocked(GLIBC_2.0)6	sprintf(GLIBC_2.0)6	
_IO_putc(GLIBC_2.0)3	fgets(GLIBC_2.0)6	ftell(GLIBC_2.0)6	putchar(GLIBC_2.0)6	sscanf(GLIBC_2.0)6	
_IO_puts(GLIBC_2.0)3	fgetwc_unlocked(GLIBC_2.0)6	ftello(GLIBC_2.0)6	putchar_unlocked(GLIBC_2.0)6	telldir(GLIBC_2.0)6	
alphasort(GLIBC_2.0)3	fileno(GLIBC_2.0)6	fwrite(GLIBC_2.0)6	puts(GLIBC_2.0)6	tempnam(GLIBC_2.0)6	
asprintf(GLIBC_2.0)3	flockfile(GLIBC_2.0)6	getc(GLIBC_2.0)6	putw(GLIBC_2.0)6	ungetc(GLIBC_2.0)6	
clearerr(GLIBC_2.0)6	fopen(GLIBC_2.0)6	getc_unlocked(GLIBC_2.0)6	remove(GLIBC_2.0)6	vasprintf(GLIBC_2.0)3	
ctermid(GLIBC_2.0)6	fprintf(GLIBC_2.0)6	getchar(GLIBC_2.0)6	rewind(GLIBC_2.0)6	vdprintf(GLIBC_2.0)3	
fclose(GLIBC_2.1)6	fputc(GLIBC_2.1)6	getchar_unlocked(GLIBC_2.1)6	rewinddir(GLIBC_2.1)6	vfprintf(GLIBC_2.1)6	
fdopen(GLIBC_2.1)6	fputs(GLIBC_2.1)6	gets(GLIBC_2.1)3	scanf(GLIBC_2.1)6	vprintf(GLIBC_2.1)6	
feof(GLIBC_2.0)6	fread(GLIBC_2.0)6	getw(GLIBC_2.0)6	seekdir(GLIBC_2.0)6	vsnprintf(GLIBC_2.0)6	
ferror(GLIBC_2.0)6	freopen(GLIBC_2.0)6	pclose(GLIBC_2.0)6	setbuf(GLIBC_2.0)6	vsprintf(GLIBC_2.0)6	
fflush(GLIBC_2.0)6	fscanf(GLIBC_2.0)6	popen(GLIBC_2.0)6	setbuffer(GLIBC_2.0)3	
	
fflush_unlocked(GLIBC_2.0)6	fseek(GLIBC_2.0)6	printf(GLIBC_2.0)6	setvbuf(GLIBC_2.0)6	

Table 16-6. libc - Standard I/O Deprecated Function Interfaces
alphasort(GLIBC_2.0)3	

	

Table 16-7. libc - Standard I/O Data Interfaces
stderr(GLIBC_2.0)6	stdin(GLIBC_2.0)6	stdout(GLIBC_2.0)6	

16.1.4. Signal Handling
Table 16-8. libc - Signal Handling Function Interfaces
__libc_current_sigrtmax(GLIBC_2.1)3	sigaddset(GLIBC_2.1)6	sighold(GLIBC_2.1)6	sigpause(GLIBC_2.1)6	sigsuspend(GLIBC_2.1)6	
__libc_current_sigrtmin(GLIBC_2.1)3	sigaltstack(GLIBC_2.1)6	sigignore(GLIBC_2.1)6	sigpending(GLIBC_2.1)6	sigtimedwait(GLIBC_2.1)6	
__sigsetjmp(GLIBC_2.0)3	sigandset(GLIBC_2.0)3	siginterrupt(GLIBC_2.0)6	sigprocmask(GLIBC_2.0)6	sigwait(GLIBC_2.0)6	
__sysv_signal(GLIBC_2.0)3	sigblock(GLIBC_2.0)3	sigisemptyset(GLIBC_2.0)3	sigqueue(GLIBC_2.0)6	sigwaitinfo(GLIBC_2.0)6	
bsd_signal(GLIBC_2.0)6	sigdelset(GLIBC_2.0)6	sigismember(GLIBC_2.0)6	sigrelse(GLIBC_2.0)6	
	
psignal(GLIBC_2.0)3	sigemptyset(GLIBC_2.0)6	siglongjmp(GLIBC_2.0)6	sigreturn(GLIBC_2.0)3	
	
raise(GLIBC_2.0)6	sigfillset(GLIBC_2.0)6	signal(GLIBC_2.0)6	sigset(GLIBC_2.0)6	
	
sigaction(GLIBC_2.0)6	siggetmask(GLIBC_2.0)3	sigorset(GLIBC_2.0)3	sigstack(GLIBC_2.0)6	

Table 16-9. libc - Signal Handling Data Interfaces
_sys_siglist(GLIBC_2.1)3	

	

16.1.5. Localization Functions
Table 16-10. libc - Localization Functions Function Interfaces
__dcgettext(GLIBC_2.0)3	catgets(GLIBC_2.0)6	dgettext(GLIBC_2.0)3	iconv_close(GLIBC_2.0)6	nl_langinfo(GLIBC_2.0)6	
bind_textdomain_codeset(GLIBC_2.2)3	catopen(GLIBC_2.2)6	dngettext(GLIBC_2.2)3	iconv_open(GLIBC_2.2)6	setlocale(GLIBC_2.2)6	
bindtextdomain(GLIBC_2.0)3	dcgettext(GLIBC_2.0)3	gettext(GLIBC_2.0)3	localeconv(GLIBC_2.0)6	textdomain(GLIBC_2.0)3	
catclose(GLIBC_2.0)6	dcngettext(GLIBC_2.0)3	iconv(GLIBC_2.0)6	ngettext(GLIBC_2.0)3	

Table 16-11. libc - Localization Functions Deprecated Function Interfaces
__dcgettext(GLIBC_2.0)3	

	

Table 16-12. libc - Localization Functions Data Interfaces
_nl_msg_cat_cntr(GLIBC_2.0)3	

	

16.1.6. Socket Interface
Table 16-13. libc - Socket Interface Function Interfaces
__h_errno_location(GLIBC_2.0)3	gethostbyname_r(GLIBC_2.0)3	getsockopt(GLIBC_2.0)5	send(GLIBC_2.0)5	socket(GLIBC_2.0)5	
accept(GLIBC_2.0)5	gethostid(GLIBC_2.0)6	listen(GLIBC_2.0)5	sendmsg(GLIBC_2.0)5	socketpair(GLIBC_2.0)5	
bind(GLIBC_2.0)5	gethostname(GLIBC_2.0)5	recv(GLIBC_2.0)5	sendto(GLIBC_2.0)5	
	
bindresvport(GLIBC_2.0)3	getpeername(GLIBC_2.0)5	recvfrom(GLIBC_2.0)5	setsockopt(GLIBC_2.0)5	
	
connect(GLIBC_2.0)5	getsockname(GLIBC_2.0)5	recvmsg(GLIBC_2.0)5	shutdown(GLIBC_2.0)5	

16.1.7. Wide Characters
Table 16-14. libc - Wide Characters Function Interfaces
__wcstod_internal(GLIBC_2.0)3	mbsinit(GLIBC_2.0)6	vwscanf(GLIBC_2.0)1	wcsnlen(GLIBC_2.0)3	wcstoumax(GLIBC_2.0)1	
__wcstof_internal(GLIBC_2.0)3	mbsnrtowcs(GLIBC_2.0)3	wcpcpy(GLIBC_2.0)3	wcsnrtombs(GLIBC_2.0)3	wcstouq(GLIBC_2.0)3	
__wcstol_internal(GLIBC_2.0)3	mbsrtowcs(GLIBC_2.0)6	wcpncpy(GLIBC_2.0)3	wcspbrk(GLIBC_2.0)1	wcswcs(GLIBC_2.0)6	
__wcstold_internal(GLIBC_2.0)3	mbstowcs(GLIBC_2.0)6	wcrtomb(GLIBC_2.0)6	wcsrchr(GLIBC_2.0)6	wcswidth(GLIBC_2.0)6	
__wcstoul_internal(GLIBC_2.0)3	mbtowc(GLIBC_2.0)6	wcscasecmp(GLIBC_2.0)3	wcsrtombs(GLIBC_2.0)6	wcsxfrm(GLIBC_2.0)6	
btowc(GLIBC_2.0)6	putwc(GLIBC_2.0)1	wcscat(GLIBC_2.0)6	wcsspn(GLIBC_2.0)6	wctob(GLIBC_2.0)6	
fgetwc(GLIBC_2.2)6	putwchar(GLIBC_2.2)1	wcschr(GLIBC_2.2)6	wcsstr(GLIBC_2.2)6	wctomb(GLIBC_2.2)6	
fgetws(GLIBC_2.2)1	swprintf(GLIBC_2.2)6	wcscmp(GLIBC_2.2)6	wcstod(GLIBC_2.2)6	wctrans(GLIBC_2.2)6	
fputwc(GLIBC_2.2)1	swscanf(GLIBC_2.2)1	wcscoll(GLIBC_2.2)6	wcstof(GLIBC_2.2)1	wctype(GLIBC_2.2)6	
fputws(GLIBC_2.2)1	towctrans(GLIBC_2.2)6	wcscpy(GLIBC_2.2)6	wcstoimax(GLIBC_2.2)1	wcwidth(GLIBC_2.2)6	
fwide(GLIBC_2.2)1	towlower(GLIBC_2.2)1	wcscspn(GLIBC_2.2)6	wcstok(GLIBC_2.2)6	wmemchr(GLIBC_2.2)6	
fwprintf(GLIBC_2.2)6	towupper(GLIBC_2.2)6	wcsdup(GLIBC_2.2)3	wcstol(GLIBC_2.2)6	wmemcmp(GLIBC_2.2)6	
fwscanf(GLIBC_2.2)1	ungetwc(GLIBC_2.2)1	wcsftime(GLIBC_2.2)1	wcstold(GLIBC_2.2)1	wmemcpy(GLIBC_2.2)6	
getwc(GLIBC_2.2)1	vfwprintf(GLIBC_2.2)1	wcslen(GLIBC_2.2)6	wcstoll(GLIBC_2.2)1	wmemmove(GLIBC_2.2)6	
getwchar(GLIBC_2.2)6	vfwscanf(GLIBC_2.2)1	wcsncasecmp(GLIBC_2.2)3	wcstombs(GLIBC_2.2)6	wmemset(GLIBC_2.2)6	
mblen(GLIBC_2.0)6	vswprintf(GLIBC_2.0)1	wcsncat(GLIBC_2.0)6	wcstoq(GLIBC_2.0)3	wprintf(GLIBC_2.0)1	
mbrlen(GLIBC_2.0)6	vswscanf(GLIBC_2.0)1	wcsncmp(GLIBC_2.0)6	wcstoul(GLIBC_2.0)6	wscanf(GLIBC_2.0)1	
mbrtowc(GLIBC_2.0)6	vwprintf(GLIBC_2.0)1	wcsncpy(GLIBC_2.0)6	wcstoull(GLIBC_2.0)1	

16.1.8. String Functions
Table 16-15. libc - String Functions Function Interfaces
__mempcpy(GLIBC_2.0)3	bzero(GLIBC_2.0)6	strcasestr(GLIBC_2.0)3	strncasecmp(GLIBC_2.0)6	strtoimax(GLIBC_2.0)1	
__rawmemchr(GLIBC_2.1)3	ffs(GLIBC_2.1)6	strcat(GLIBC_2.1)6	strncat(GLIBC_2.1)6	strtok(GLIBC_2.1)6	
__stpcpy(GLIBC_2.0)3	index(GLIBC_2.0)6	strchr(GLIBC_2.0)6	strncmp(GLIBC_2.0)6	strtok_r(GLIBC_2.0)3	
__strdup(GLIBC_2.0)3	memccpy(GLIBC_2.0)6	strcmp(GLIBC_2.0)6	strncpy(GLIBC_2.0)6	strtold(GLIBC_2.0)1	
__strtod_internal(GLIBC_2.0)3	memchr(GLIBC_2.0)6	strcoll(GLIBC_2.0)6	strndup(GLIBC_2.0)3	strtoll(GLIBC_2.0)1	
__strtof_internal(GLIBC_2.0)3	memcmp(GLIBC_2.0)6	strcpy(GLIBC_2.0)6	strnlen(GLIBC_2.0)3	strtoq(GLIBC_2.0)3	
__strtok_r(GLIBC_2.0)3	memcpy(GLIBC_2.0)6	strcspn(GLIBC_2.0)6	strpbrk(GLIBC_2.0)6	strtoull(GLIBC_2.0)1	
__strtol_internal(GLIBC_2.0)3	memmove(GLIBC_2.0)6	strdup(GLIBC_2.0)6	strptime(GLIBC_2.0)3	strtoumax(GLIBC_2.0)1	
__strtold_internal(GLIBC_2.0)3	memrchr(GLIBC_2.0)3	strerror(GLIBC_2.0)6	strrchr(GLIBC_2.0)6	strtouq(GLIBC_2.0)3	
__strtoll_internal(GLIBC_2.0)3	memset(GLIBC_2.0)6	strerror_r(GLIBC_2.0)3	strsep(GLIBC_2.0)3	strverscmp(GLIBC_2.0)3	
__strtoul_internal(GLIBC_2.0)3	rindex(GLIBC_2.0)6	strfmon(GLIBC_2.0)6	strsignal(GLIBC_2.0)3	strxfrm(GLIBC_2.0)6	
__strtoull_internal(GLIBC_2.0)3	stpcpy(GLIBC_2.0)3	strfry(GLIBC_2.0)3	strspn(GLIBC_2.0)6	swab(GLIBC_2.0)6	
bcmp(GLIBC_2.0)6	stpncpy(GLIBC_2.0)3	strftime(GLIBC_2.0)6	strstr(GLIBC_2.0)6	
	
bcopy(GLIBC_2.0)6	strcasecmp(GLIBC_2.0)6	strlen(GLIBC_2.0)6	strtof(GLIBC_2.0)1	

16.1.9. IPC Functions
Table 16-16. libc - IPC Functions Function Interfaces
ftok(GLIBC_2.0)6	msgrcv(GLIBC_2.0)6	semget(GLIBC_2.0)6	shmctl(GLIBC_2.0)6	
	
msgctl(GLIBC_2.0)6	msgsnd(GLIBC_2.0)6	semop(GLIBC_2.0)6	shmdt(GLIBC_2.0)6	
	
msgget(GLIBC_2.0)6	semctl(GLIBC_2.0)6	shmat(GLIBC_2.0)6	shmget(GLIBC_2.0)6	

16.1.10. Regular Expressions
Table 16-17. libc - Regular Expressions Function Interfaces
advance(GLIBC_2.0)6	re_exec(GLIBC_2.0)6	regerror(GLIBC_2.0)6	regfree(GLIBC_2.0)6	
	
re_comp(GLIBC_2.0)6	regcomp(GLIBC_2.0)6	regexec(GLIBC_2.0)6	step(GLIBC_2.0)6	

Table 16-18. libc - Regular Expressions Data Interfaces
loc1(GLIBC_2.0)6	loc2(GLIBC_2.0)6	locs(GLIBC_2.0)6	

16.1.11. Character Type Functions
Table 16-19. libc - Character Type Functions Function Interfaces
__ctype_get_mb_cur_max(GLIBC_2.0)3	isdigit(GLIBC_2.0)6	iswalnum(GLIBC_2.0)6	iswlower(GLIBC_2.0)6	toascii(GLIBC_2.0)6	
_tolower(GLIBC_2.0)6	isgraph(GLIBC_2.0)6	iswalpha(GLIBC_2.0)6	iswprint(GLIBC_2.0)6	tolower(GLIBC_2.0)6	
_toupper(GLIBC_2.0)6	islower(GLIBC_2.0)6	iswblank(GLIBC_2.0)7	iswpunct(GLIBC_2.0)6	toupper(GLIBC_2.0)6	
isalnum(GLIBC_2.0)6	isprint(GLIBC_2.0)6	iswcntrl(GLIBC_2.0)6	iswspace(GLIBC_2.0)6	
	
isalpha(GLIBC_2.0)6	ispunct(GLIBC_2.0)6	iswctype(GLIBC_2.0)3	iswupper(GLIBC_2.0)6	
	
isascii(GLIBC_2.0)6	isspace(GLIBC_2.0)6	iswdigit(GLIBC_2.0)6	iswxdigit(GLIBC_2.0)6	
	
iscntrl(GLIBC_2.0)6	isupper(GLIBC_2.0)6	iswgraph(GLIBC_2.0)6	isxdigit(GLIBC_2.0)6	

Table 16-20. libc - Character Type Functions Data Interfaces
__ctype_b(GLIBC_2.0)3	__ctype_tolower(GLIBC_2.0)3	__ctype_toupper(GLIBC_2.0)3	

16.1.12. Time Manipulation
Table 16-21. libc - Time Manipulation Function Interfaces
adjtime(GLIBC_2.0)3	asctime_r(GLIBC_2.0)6	difftime(GLIBC_2.0)6	localtime(GLIBC_2.0)6	tzset(GLIBC_2.0)6	
adjtimex(GLIBC_2.0)3	ctime(GLIBC_2.0)6	gmtime(GLIBC_2.0)6	localtime_r(GLIBC_2.0)6	ualarm(GLIBC_2.0)6	
asctime(GLIBC_2.0)6	ctime_r(GLIBC_2.0)6	gmtime_r(GLIBC_2.0)6	mktime(GLIBC_2.0)6	

Table 16-22. libc - Time Manipulation Data Interfaces
__daylight(GLIBC_2.0)3	__tzname(GLIBC_2.0)3	timezone(GLIBC_2.0)6	

__timezone(GLIBC_2.0)3	daylight(GLIBC_2.0)6	tzname(GLIBC_2.0)6	

16.1.13. Terminal Interface Functions
Table 16-23. libc - Terminal Interface Functions Function Interfaces
cfgetispeed(GLIBC_2.0)6	cfsetispeed(GLIBC_2.0)6	tcdrain(GLIBC_2.0)6	tcgetattr(GLIBC_2.0)6	tcsendbreak(GLIBC_2.0)6	
cfgetospeed(GLIBC_2.0)6	cfsetospeed(GLIBC_2.0)6	tcflow(GLIBC_2.0)6	tcgetpgrp(GLIBC_2.0)6	tcsetattr(GLIBC_2.0)6	
cfmakeraw(GLIBC_2.0)3	cfsetspeed(GLIBC_2.0)3	tcflush(GLIBC_2.0)6	tcgetsid(GLIBC_2.0)6	tcsetpgrp(GLIBC_2.0)6	

16.1.14. System Database Interface
Table 16-24. libc - System Database Interface Function Interfaces
endgrent(GLIBC_2.0)6	getgrgid(GLIBC_2.0)6	getprotoent(GLIBC_2.0)6	getutent(GLIBC_2.0)3	setmntent(GLIBC_2.0)3	
endhostent(GLIBC_2.0)5	getgrgid_r(GLIBC_2.0)6	getpwent(GLIBC_2.0)6	getutent_r(GLIBC_2.0)3	setnetent(GLIBC_2.0)5	
endnetent(GLIBC_2.0)5	getgrnam(GLIBC_2.0)6	getpwnam(GLIBC_2.0)6	getutxent(GLIBC_2.0)6	setprotoent(GLIBC_2.0)5	
endprotoent(GLIBC_2.0)5	getgrnam_r(GLIBC_2.0)6	getpwnam_r(GLIBC_2.0)3	getutxid(GLIBC_2.0)6	setpwent(GLIBC_2.0)6	
endpwent(GLIBC_2.0)6	gethostbyaddr(GLIBC_2.0)5	getpwuid(GLIBC_2.0)6	getutxline(GLIBC_2.0)6	setservent(GLIBC_2.0)5	
endservent(GLIBC_2.0)5	gethostbyname(GLIBC_2.0)3	getpwuid_r(GLIBC_2.0)6	pututxline(GLIBC_2.0)6	setutent(GLIBC_2.0)3	
endutent(GLIBC_2.0)6	getnetbyaddr(GLIBC_2.0)5	getservbyname(GLIBC_2.0)3	setgrent(GLIBC_2.0)6	setutxent(GLIBC_2.0)6	
endutxent(GLIBC_2.1)6	getprotobyname(GLIBC_2.1)6	getservbyport(GLIBC_2.1)5	setgroups(GLIBC_2.1)3	
	
getgrent(GLIBC_2.0)6	getprotobynumber(GLIBC_2.0)5	getservent(GLIBC_2.0)3	sethostent(GLIBC_2.0)5	

Table 16-25. libc - System Database Interface Deprecated Function Interfaces
endhostent(GLIBC_2.0)5	sethostent(GLIBC_2.0)5	setmntent(GLIBC_2.0)3	

16.1.15. Language Support
Table 16-26. libc - Language Support Function Interfaces
__divdi3(GLIBC_2.0)3	__moddi3(GLIBC_2.0)3	__umoddi3(GLIBC_2.0)3	_obstack_newchunk(GLIBC_2.0)3	
	
__libc_start_main(GLIBC_2.0)3	__udivdi3(GLIBC_2.0)3	_obstack_begin(GLIBC_2.0)3	obstack_free(GLIBC_2.0)3	

16.1.16. Large File Support
Table 16-27. libc - Large File Support Function Interfaces
__fxstat64(GLIBC_2.2)3	fopen64(GLIBC_2.2)2	ftello64(GLIBC_2.2)2	mkstemp64(GLIBC_2.2)2	readdir64(GLIBC_2.2)2	
__lxstat64(GLIBC_2.2)3	freopen64(GLIBC_2.2)2	ftruncate64(GLIBC_2.2)2	mmap64(GLIBC_2.2)2	statfs64(GLIBC_2.2)3	
__xstat64(GLIBC_2.2)3	fseeko64(GLIBC_2.2)2	ftw64(GLIBC_2.2)2	nftw64(GLIBC_2.2)2	statvfs64(GLIBC_2.2)2	
alphasort64(GLIBC_2.1)3	fsetpos64(GLIBC_2.1)2	getrlimit64(GLIBC_2.1)2	open64(GLIBC_2.1)2	tmpfile64(GLIBC_2.1)2	
creat64(GLIBC_2.1)2	fstatfs64(GLIBC_2.1)3	lockf64(GLIBC_2.1)2	pread64(GLIBC_2.1)2	truncate64(GLIBC_2.1)2	
fgetpos64(GLIBC_2.1)2	fstatvfs64(GLIBC_2.1)2	lseek64(GLIBC_2.1)2	pwrite64(GLIBC_2.1)2	

Table 16-28. libc - Large File Support Deprecated Function Interfaces
alphasort64(GLIBC_2.1)3	fstatfs64(GLIBC_2.1)3	statfs64(GLIBC_2.1)3	

16.1.17. Standard Library
Table 16-29. libc - Standard Library Function Interfaces
_Exit(GLIBC_2.1.1)1	div(GLIBC_2.1.1)6	globfree64(GLIBC_2.1.1)3	llabs(GLIBC_2.1.1)1	setlogmask(GLIBC_2.1.1)6	
__assert_fail(GLIBC_2.0)3	drand48(GLIBC_2.0)6	grantpt(GLIBC_2.0)6	lldiv(GLIBC_2.0)1	setstate(GLIBC_2.0)6	
__cxa_atexit(GLIBC_2.1.3)3	ecvt(GLIBC_2.1.3)6	hcreate(GLIBC_2.1.3)6	longjmp(GLIBC_2.1.3)6	srand(GLIBC_2.1.3)6	
__errno_location(GLIBC_2.0)3	erand48(GLIBC_2.0)6	hdestroy(GLIBC_2.0)6	lrand48(GLIBC_2.0)6	srand48(GLIBC_2.0)6	
__fpending(GLIBC_2.2)3	err(GLIBC_2.2)3	hsearch(GLIBC_2.2)6	lsearch(GLIBC_2.2)6	srandom(GLIBC_2.2)6	
__getpagesize(GLIBC_2.0)3	error(GLIBC_2.0)3	htonl(GLIBC_2.0)5	makecontext(GLIBC_2.0)6	strtod(GLIBC_2.0)6	
__isinf(GLIBC_2.0)3	errx(GLIBC_2.0)3	htons(GLIBC_2.0)5	malloc(GLIBC_2.0)6	strtol(GLIBC_2.0)6	
__isinff(GLIBC_2.0)3	fcvt(GLIBC_2.0)6	imaxabs(GLIBC_2.0)1	memmem(GLIBC_2.0)3	strtoul(GLIBC_2.0)6	
__isinfl(GLIBC_2.0)3	fmtmsg(GLIBC_2.0)6	imaxdiv(GLIBC_2.0)1	mkstemp(GLIBC_2.0)6	swapcontext(GLIBC_2.0)6	
__isnan(GLIBC_2.0)3	fnmatch(GLIBC_2.0)6	inet_addr(GLIBC_2.0)5	mktemp(GLIBC_2.0)6	syslog(GLIBC_2.0)6	
__isnanf(GLIBC_2.0)3	fpathconf(GLIBC_2.0)6	inet_aton(GLIBC_2.0)5	mrand48(GLIBC_2.0)6	system(GLIBC_2.0)3	
__isnanl(GLIBC_2.0)3	free(GLIBC_2.0)6	inet_ntoa(GLIBC_2.0)5	nftw(GLIBC_2.0)6	tfind(GLIBC_2.0)6	
__sysconf(GLIBC_2.2)3	freeaddrinfo(GLIBC_2.2)7	inet_ntop(GLIBC_2.2)7	nrand48(GLIBC_2.2)6	tmpfile(GLIBC_2.2)6	
_exit(GLIBC_2.0)6	ftrylockfile(GLIBC_2.0)6	inet_pton(GLIBC_2.0)7	ntohl(GLIBC_2.0)5	tmpnam(GLIBC_2.0)6	
_longjmp(GLIBC_2.0)6	ftw(GLIBC_2.0)6	initstate(GLIBC_2.0)6	ntohs(GLIBC_2.0)5	tsearch(GLIBC_2.0)6	
_setjmp(GLIBC_2.0)6	funlockfile(GLIBC_2.0)6	insque(GLIBC_2.0)6	openlog(GLIBC_2.0)6	ttyname(GLIBC_2.0)6	
a64l(GLIBC_2.0)6	gai_strerror(GLIBC_2.0)7	ioperm(GLIBC_2.0)3	perror(GLIBC_2.0)6	ttyname_r(GLIBC_2.0)6	
abort(GLIBC_2.0)6	gcvt(GLIBC_2.0)6	iopl(GLIBC_2.0)3	posix_memalign(GLIBC_2.0)4	twalk(GLIBC_2.0)6	
abs(GLIBC_2.0)6	getaddrinfo(GLIBC_2.0)7	isatty(GLIBC_2.0)6	ptsname(GLIBC_2.0)6	unlockpt(GLIBC_2.0)6	
atexit(GLIBC_2.0)6	getcwd(GLIBC_2.0)6	isblank(GLIBC_2.0)7	putenv(GLIBC_2.0)6	unsetenv(GLIBC_2.0)3	
atof(GLIBC_2.0)6	getdate(GLIBC_2.0)6	isinf(GLIBC_2.0)1	qsort(GLIBC_2.0)6	usleep(GLIBC_2.0)6	
atoi(GLIBC_2.0)6	getenv(GLIBC_2.0)6	isinff(GLIBC_2.0)	rand(GLIBC_2.0)6	verrx(GLIBC_2.0)3	
atol(GLIBC_2.0)6	getlogin(GLIBC_2.0)6	isinfl(GLIBC_2.0)1	rand_r(GLIBC_2.0)6	vfscanf(GLIBC_2.0)1	
atoll(GLIBC_2.0)1	getnameinfo(GLIBC_2.0)7	isnan(GLIBC_2.0)1	random(GLIBC_2.0)6	vscanf(GLIBC_2.0)1	
basename(GLIBC_2.0)6	getopt(GLIBC_2.0)3	isnanf(GLIBC_2.0)1	random_r(GLIBC_2.0)3	vsscanf(GLIBC_2.0)1	
bsearch(GLIBC_2.0)6	getopt_long(GLIBC_2.0)3	isnanl(GLIBC_2.0)1	realloc(GLIBC_2.0)6	vsyslog(GLIBC_2.0)3	
calloc(GLIBC_2.0)6	getopt_long_only(GLIBC_2.0)3	jrand48(GLIBC_2.0)6	realpath(GLIBC_2.0)6	warn(GLIBC_2.0)3	
closelog(GLIBC_2.0)6	getsubopt(GLIBC_2.0)6	l64a(GLIBC_2.0)6	remque(GLIBC_2.0)6	warnx(GLIBC_2.0)3	
confstr(GLIBC_2.0)6	gettimeofday(GLIBC_2.0)6	labs(GLIBC_2.0)6	seed48(GLIBC_2.0)6	wordexp(GLIBC_2.0)6	
cuserid(GLIBC_2.0)6	glob(GLIBC_2.0)6	lcong48(GLIBC_2.0)6	setenv(GLIBC_2.0)3	wordfree(GLIBC_2.0)6	
daemon(GLIBC_2.0)3	glob64(GLIBC_2.0)3	ldiv(GLIBC_2.0)6	sethostid(GLIBC_2.0)3	
	
dirname(GLIBC_2.0)6	globfree(GLIBC_2.0)6	lfind(GLIBC_2.0)6	sethostname(GLIBC_2.0)3	

Table 16-30. libc - Standard Library Data Interfaces
__environ(GLIBC_2.0)3	_sys_errlist(GLIBC_2.0)3	getdate_err(GLIBC_2.0)6	opterr(GLIBC_2.0)3	optopt(GLIBC_2.0)3	
_environ(GLIBC_2.0)3	environ(GLIBC_2.0)6	optarg(GLIBC_2.0)6	optind(GLIBC_2.0)3	

16.2. Data Definitions for libc
This section contains standard data definitions that describe system data. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content.
ISO C serves as the LSB reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.
16.2.1. errno.h

#define EDEADLOCK       EDEADLK
16.2.2. inttypes.h

typedef long long intmax_t;
typedef unsigned int uintptr_t;
typedef unsigned long long uintmax_t;
16.2.3. limits.h

#define LONG_MAX        0x7FFFFFFFL
#define ULONG_MAX       0xFFFFFFFFUL

#define CHAR_MAX        SCHAR_MAX
#define CHAR_MIN        SCHAR_MIN
16.2.4. setjmp.h

typedef int __jmp_buf[6];
16.2.5. signal.h

struct sigaction
{
  union
  {
    __sighandler_t _sa_handler;
    void (*_sa_sigaction) (int, siginfo_t *, void *);
  }
  __sigaction_handler;
  sigset_t sa_mask;
  unsigned long sa_flags;
  void (*sa_restorer) (void);
}
 ;

struct _fpreg
{
  unsigned short significand[4];
  unsigned short exponent;
}
 ;
struct _fpxreg
{
  unsigned short significand[4];
  unsigned short exponent;
  unsigned short padding[3];
}
 ;
struct _xmmreg
{
  unsigned long element[4];
}
 ;

struct _fpstate
{
  unsigned long cw;
  unsigned long sw;
  unsigned long tag;
  unsigned long ipoff;
  unsigned long cssel;
  unsigned long dataoff;
  unsigned long datasel;
  struct _fpreg _st[8];
  unsigned short status;
  unsigned short magic;
  unsigned long _fxsr_env[6];
  unsigned long mxcsr;
  unsigned long reserved;
  struct _fpxreg _fxsr_st[8];
  struct _xmmreg _xmm[8];
  unsigned long padding[56];
}
 ;

struct sigcontext
{
  unsigned short gs;
  unsigned short __gsh;
  unsigned short fs;
  unsigned short __fsh;
  unsigned short es;
  unsigned short __esh;
  unsigned short ds;
  unsigned short __dsh;
  unsigned long edi;
  unsigned long esi;
  unsigned long ebp;
  unsigned long esp;
  unsigned long ebx;
  unsigned long edx;
  unsigned long ecx;
  unsigned long eax;
  unsigned long trapno;
  unsigned long err;
  unsigned long eip;
  unsigned short cs;
  unsigned short __csh;
  unsigned long eflags;
  unsigned long esp_at_signal;
  unsigned short ss;
  unsigned short __ssh;
  struct _fpstate *fpstate;
  unsigned long oldmask;
  unsigned long cr2;
}
 ;
16.2.6. stddef.h

typedef unsigned int size_t;
typedef int ptrdiff_t;
16.2.7. sys/ioctl.h

#define FIONREAD        0x541B
#define TIOCNOTTY       0x5422
16.2.8. sys/ipc.h

struct ipc_perm
{
  key_t __key;
  uid_t uid;
  gid_t gid;
  uid_t cuid;
  gid_t cgid;
  unsigned short mode;
  unsigned short __pad1;
  unsigned short __seq;
  unsigned short __pad2;
  unsigned long __unused1;
  unsigned long __unused2;
}
 ;
16.2.9. sys/mman.h

#define MCL_CURRENT     1
#define MCL_FUTURE      2
16.2.10. sys/msg.h

typedef unsigned long msgqnum_t;
typedef unsigned long msglen_t;

struct msqid_ds
{
  struct ipc_perm msg_perm;
  time_t msg_stime;
  unsigned long __unused1;
  time_t msg_rtime;
  unsigned long __unused2;
  time_t msg_ctime;
  unsigned long __unused3;
  unsigned long __msg_cbytes;
  msgqnum_t msg_qnum;
  msglen_t msg_qbytes;
  pid_t msg_lspid;
  pid_t msg_lrpid;
  unsigned long __unused4;
  unsigned long __unused5;
}
 ;
16.2.11. sys/sem.h

struct semid_ds
{
  struct ipc_perm sem_perm;
  time_t sem_otime;
  unsigned long __unused1;
  time_t sem_ctime;
  unsigned long __unused2;
  unsigned long sem_nsems;
  unsigned long __unused3;
  unsigned long __unused4;
}
 ;
16.2.12. sys/shm.h

#define SHMLBA  (__getpagesize())

typedef unsigned long shmatt_t;

struct shmid_ds
{
  struct ipc_perm shm_perm;
  int shm_segsz;
  time_t shm_atime;
  unsigned long __unused1;
  time_t shm_dtime;
  unsigned long __unused2;
  time_t shm_ctime;
  unsigned long __unused3;
  pid_t shm_cpid;
  pid_t shm_lpid;
  shmatt_t shm_nattch;
  unsigned long __unused4;
  unsigned long __unused5;
}
 ;
16.2.13. sys/stat.h

#define _STAT_VER       3

struct stat
{
  dev_t st_dev;
  unsigned short __pad1;
  unsigned long st_ino;
  mode_t st_mode;
  nlink_t st_nlink;
  pid_t st_uid;
  gid_t st_gid;
  dev_t st_rdev;
  unsigned short __pad2;
  off_t st_size;
  blksize_t st_blksize;
  blkcnt_t st_blocks;
  time_t st_atime;
  unsigned long __unused1;
  time_t st_mtime;
  unsigned long __unused2;
  time_t st_ctime;
  unsigned long __unused3;
  unsigned long __unused4;
  unsigned long __unused5;
}
 ;
struct stat64
{
  dev_t st_dev;
  unsigned int __pad1;
  ino_t __st_ino;
  mode_t st_mode;
  nlink_t st_nlink;
  uid_t st_uid;
  gid_t st_gid;
  dev_t st_rdev;
  unsigned int __pad2;
  off64_t st_size;
  blksize_t st_blksize;
  blkcnt64_t st_blocks;
  time_t st_atime;
  unsigned long __unused1;
  time_t st_mtime;
  unsigned long __unused2;
  time_t st_ctime;
  unsigned long __unused3;
  ino64_t st_ino;
}
 ;
16.2.14. sys/statvfs.h

struct statvfs
{
  unsigned long f_bsize;
  unsigned long f_frsize;
  fsblkcnt_t f_blocks;
  fsblkcnt_t f_bfree;
  fsblkcnt_t f_bavail;
  fsfilcnt_t f_files;
  fsfilcnt_t f_ffree;
  fsfilcnt_t f_favail;
  unsigned long f_fsid;
  int __f_unused;
  unsigned long f_flag;
  unsigned long f_namemax;
  int __f_spare[6];
}
 ;
struct statvfs64
{
  unsigned long f_bsize;
  unsigned long f_frsize;
  fsblkcnt64_t f_blocks;
  fsblkcnt64_t f_bfree;
  fsblkcnt64_t f_bavail;
  fsfilcnt64_t f_files;
  fsfilcnt64_t f_ffree;
  fsfilcnt64_t f_favail;
  unsigned long f_fsid;
  int __f_unused;
  unsigned long f_flag;
  unsigned long f_namemax;
  int __f_spare[6];
}
 ;
16.2.15. sys/types.h

typedef int ssize_t;
16.2.16. termios.h

#define OLCUC   0000002
#define ONLCR   0000004
#define XCASE   0000004
#define NLDLY   0000400
#define CR1     0001000
#define IUCLC   0001000
#define CR2     0002000
#define CR3     0003000
#define CRDLY   0003000
#define TAB1    0004000
#define TAB2    0010000
#define TAB3    0014000
#define TABDLY  0014000
#define BS1     0020000
#define BSDLY   0020000
#define VT1     0040000
#define VTDLY   0040000
#define FF1     0100000
#define FFDLY   0100000

#define VSUSP   10
#define VEOL    11
#define VREPRINT        12
#define VDISCARD        13
#define VWERASE 14
#define VEOL2   16
#define VMIN    6
#define VSWTC   7
#define VSTART  8
#define VSTOP   9

#define IXON    0002000
#define IXOFF   0010000

#define CS6     0000020
#define CS7     0000040
#define CS8     0000060
#define CSIZE   0000060
#define CSTOPB  0000100
#define CREAD   0000200
#define PARENB  0000400
#define PARODD  0001000
#define HUPCL   0002000
#define CLOCAL  0004000
#define VTIME   5

#define ISIG    0000001
#define ICANON  0000002
#define ECHOE   0000020
#define ECHOK   0000040
#define ECHONL  0000100
#define NOFLSH  0000200
#define TOSTOP  0000400
#define ECHOCTL 0001000
#define ECHOPRT 0002000
#define ECHOKE  0004000
#define FLUSHO  0010000
#define PENDIN  0040000
#define IEXTEN  0100000
16.2.17. ucontext.h

typedef int greg_t;
#define NGREG   19

typedef greg_t gregset_t[19];

struct _libc_fpreg
{
  unsigned short significand[4];
  unsigned short exponent;
}
 ;

struct _libc_fpstate
{
  unsigned long cw;
  unsigned long sw;
  unsigned long tag;
  unsigned long ipoff;
  unsigned long cssel;
  unsigned long dataoff;
  unsigned long datasel;
  struct _libc_fpreg _st[8];
  unsigned long status;
}
 ;
typedef struct _libc_fpstate *fpregset_t;

typedef struct
{
  gregset_t gregs;
  fpregset_t fpregs;
  unsigned long oldmask;
  unsigned long cr2;
}
mcontext_t;

typedef struct ucontext
{
  unsigned long uc_flags;
  struct ucontext *uc_link;
  stack_t uc_stack;
  mcontext_t uc_mcontext;
  sigset_t uc_sigmask;
  struct _libc_fpstate __fpregs_mem;
}
ucontext_t;
16.2.18. unistd.h

typedef int intptr_t;
16.3. Interfaces Definitions for libc
__divdi3
Name
__divdi3 — mathematic operation
Synopsis
DItype
__divdi3(DItype u, DItype v);
Description
__divdi3() divides two DItypes(unsigned ints).
__divdi3 is not in the source standard; it is only in the binary standard.
ioperm
Name
ioperm — set port input/output permissions
Synopsis
#include <unistd.h> /* for libc5 */
#include <sys/io.h> /* for glibc */

int ioperm(unsigned long from, unsigned long num, int turn_on);
Description
ioperm sets the port access permission bits for the process for num bytes starting from port address from to the value turn_on. The use of ioperm requires root privileges.
Only the first 0x3ff I/O ports can be specified in this manner. For more ports, the iopl function must be used. Permissions are not inherited on fork, but on exec they are. This is useful for giving port access permissions to non-privileged tasks.
Return Value
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
Notes
Libc5 treats it as a system call and has a prototype in <unistd.h>. Glibc1 does not have a prototype. Glibc2 has a prototype both in <sys/io.h> and in <sys/perm.h>. Avoid the latter, it is available on i386 only.
iopl
Name
iopl — change I/O privilege level
Synopsis
#include <unistd.h> /* for libc5 */
#include <sys/io.h> /* for glibc */

int iopl(int level);
Description
iopl changes the I/O privilege level of the current process, as specified in level.
This call is necessary to allow 8514-compatible X servers to run under Linux. Since these X servers require access to all 65536 I/O ports, the ioperm call is not sufficient.
In addition to granting unrestricted I/O port access, running at a higher I/O privilege level also allows the process to disable interrupts. This will probably crash the system, and is not recommended.
Permissions are inherited by fork and exec.
The I/O privilege level for a normal process is 0.
Return Value
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
Errors
EINVAL 
 	level is greater than 3.
EPERM 
 	The current user is not the super-user.
Notes from the Kernel Source
iopl has to be used when you want to access the I/O ports beyond the 0x3ff range: to get the full 65536 ports bitmapped you'd need 8kB of bitmaps/process, which is a bit excessive.
Notes
Libc5 treats it as a system call and has a prototype in <unistd.h>. Glibc1 does not have a prototype. Glibc2 has a prototype both in <sys/io.h> and in <sys/perm.h>. Avoid the latter, it is available on i386 only.
16.4. Interfaces for libm
Table 16-31. libm Definition
Library:	libm	
SONAME:	libm.so.6	

The behavior of the interfaces in this library is specified by the following standards.
ISO/IEC 9899: 1999, Programming Languages --C10	
CAE Specification, January 1997, System Interfaces and Headers (XSH),Issue 5 (ISBN: 1-85912-181-0, C606)11	

16.4.1. Math
Table 16-32. libm - Math Function Interfaces
acos(GLIBC_2.0)11	cexp(GLIBC_2.0)10	expf(GLIBC_2.0)10	jnf(GLIBC_2.0)10	remquof(GLIBC_2.0)10	
acosf(GLIBC_2.0)10	cexpf(GLIBC_2.0)10	expl(GLIBC_2.0)10	jnl(GLIBC_2.0)10	remquol(GLIBC_2.0)10	
acosh(GLIBC_2.0)11	cexpl(GLIBC_2.0)10	expm1(GLIBC_2.0)11	ldexp(GLIBC_2.0)11	rint(GLIBC_2.0)11	
acoshf(GLIBC_2.0)10	cimag(GLIBC_2.0)10	fabs(GLIBC_2.0)11	ldexpf(GLIBC_2.0)10	rintf(GLIBC_2.0)10	
acoshl(GLIBC_2.0)10	cimagf(GLIBC_2.0)10	fabsf(GLIBC_2.0)10	ldexpl(GLIBC_2.0)10	rintl(GLIBC_2.0)10	
acosl(GLIBC_2.0)10	cimagl(GLIBC_2.0)10	fabsl(GLIBC_2.0)10	lgamma(GLIBC_2.0)11	round(GLIBC_2.0)10	
asin(GLIBC_2.0)11	clog(GLIBC_2.0)10	fdim(GLIBC_2.0)10	lgamma_r(GLIBC_2.0)10	roundf(GLIBC_2.0)10	
asinf(GLIBC_2.0)10	clog10(GLIBC_2.0)10	fdimf(GLIBC_2.0)10	lgammaf(GLIBC_2.0)10	roundl(GLIBC_2.0)10	
asinh(GLIBC_2.0)11	clog10f(GLIBC_2.0)10	fdiml(GLIBC_2.0)10	lgammaf_r(GLIBC_2.0)10	scalb(GLIBC_2.0)11	
asinhf(GLIBC_2.0)10	clog10l(GLIBC_2.0)10	feclearexcept(GLIBC_2.0)10	lgammal(GLIBC_2.0)10	scalbf(GLIBC_2.0)10	
asinhl(GLIBC_2.0)10	clogf(GLIBC_2.0)10	fegetenv(GLIBC_2.0)10	lgammal_r(GLIBC_2.0)10	scalbl(GLIBC_2.0)10	
asinl(GLIBC_2.0)10	clogl(GLIBC_2.0)10	fegetexceptflag(GLIBC_2.0)10	llrint(GLIBC_2.0)10	scalbln(GLIBC_2.0)10	
atan(GLIBC_2.0)11	conj(GLIBC_2.0)10	fegetround(GLIBC_2.0)10	llrintf(GLIBC_2.0)10	scalblnf(GLIBC_2.0)10	
atan2(GLIBC_2.0)11	conjf(GLIBC_2.0)10	feholdexcept(GLIBC_2.0)10	llrintl(GLIBC_2.0)10	scalblnl(GLIBC_2.0)10	
atan2f(GLIBC_2.0)10	conjl(GLIBC_2.0)10	feraiseexcept(GLIBC_2.0)10	llround(GLIBC_2.0)10	scalbn(GLIBC_2.0)10	
atan2l(GLIBC_2.0)10	copysign(GLIBC_2.0)10	fesetenv(GLIBC_2.0)10	llroundf(GLIBC_2.0)10	scalbnf(GLIBC_2.0)10	
atanf(GLIBC_2.0)10	copysignf(GLIBC_2.0)10	fesetexceptflag(GLIBC_2.0)10	llroundl(GLIBC_2.0)10	scalbnl(GLIBC_2.0)10	
atanh(GLIBC_2.0)11	copysignl(GLIBC_2.0)10	fesetround(GLIBC_2.0)10	log(GLIBC_2.0)11	significand(GLIBC_2.0)10	
atanhf(GLIBC_2.0)10	cos(GLIBC_2.0)11	fetestexcept(GLIBC_2.0)10	log10(GLIBC_2.0)11	significandf(GLIBC_2.0)10	
atanhl(GLIBC_2.0)10	cosf(GLIBC_2.0)10	feupdateenv(GLIBC_2.0)10	log10f(GLIBC_2.0)10	significandl(GLIBC_2.0)10	
atanl(GLIBC_2.0)10	cosh(GLIBC_2.0)11	finite(GLIBC_2.0)11	log10l(GLIBC_2.0)10	sin(GLIBC_2.0)11	
cabs(GLIBC_2.1)11	coshf(GLIBC_2.1)10	finitef(GLIBC_2.1)10	log1p(GLIBC_2.1)11	sincos(GLIBC_2.1)10	
cabsf(GLIBC_2.1)10	coshl(GLIBC_2.1)10	finitel(GLIBC_2.1)10	logb(GLIBC_2.1)11	sincosf(GLIBC_2.1)10	
cabsl(GLIBC_2.1)10	cosl(GLIBC_2.1)10	floor(GLIBC_2.1)11	logf(GLIBC_2.1)10	sincosl(GLIBC_2.1)10	
cacos(GLIBC_2.1)10	cpow(GLIBC_2.1)10	floorf(GLIBC_2.1)10	logl(GLIBC_2.1)10	sinf(GLIBC_2.1)10	
cacosf(GLIBC_2.1)10	cpowf(GLIBC_2.1)10	floorl(GLIBC_2.1)10	lrint(GLIBC_2.1)10	sinh(GLIBC_2.1)11	
cacosh(GLIBC_2.1)10	cpowl(GLIBC_2.1)10	fma(GLIBC_2.1)10	lrintf(GLIBC_2.1)10	sinhf(GLIBC_2.1)10	
cacoshf(GLIBC_2.1)10	cproj(GLIBC_2.1)10	fmaf(GLIBC_2.1)10	lrintl(GLIBC_2.1)10	sinhl(GLIBC_2.1)10	
cacoshl(GLIBC_2.1)10	cprojf(GLIBC_2.1)10	fmal(GLIBC_2.1)10	lround(GLIBC_2.1)10	sinl(GLIBC_2.1)10	
cacosl(GLIBC_2.1)10	cprojl(GLIBC_2.1)10	fmax(GLIBC_2.1)10	lroundf(GLIBC_2.1)10	sqrt(GLIBC_2.1)11	
carg(GLIBC_2.1)10	creal(GLIBC_2.1)10	fmaxf(GLIBC_2.1)10	lroundl(GLIBC_2.1)10	sqrtf(GLIBC_2.1)10	
cargf(GLIBC_2.1)10	crealf(GLIBC_2.1)10	fmaxl(GLIBC_2.1)10	matherr(GLIBC_2.1)10	sqrtl(GLIBC_2.1)10	
cargl(GLIBC_2.1)10	creall(GLIBC_2.1)10	fmin(GLIBC_2.1)10	modf(GLIBC_2.1)11	tan(GLIBC_2.1)11	
casin(GLIBC_2.1)10	csin(GLIBC_2.1)10	fminf(GLIBC_2.1)10	modff(GLIBC_2.1)10	tanf(GLIBC_2.1)10	
casinf(GLIBC_2.1)10	csinf(GLIBC_2.1)10	fminl(GLIBC_2.1)10	modfl(GLIBC_2.1)10	tanh(GLIBC_2.1)11	
casinh(GLIBC_2.1)10	csinh(GLIBC_2.1)10	fmod(GLIBC_2.1)11	nan(GLIBC_2.1)10	tanhf(GLIBC_2.1)10	
casinhf(GLIBC_2.1)10	csinhf(GLIBC_2.1)10	fmodf(GLIBC_2.1)10	nanf(GLIBC_2.1)10	tanhl(GLIBC_2.1)10	
casinhl(GLIBC_2.1)10	csinhl(GLIBC_2.1)10	fmodl(GLIBC_2.1)10	nanl(GLIBC_2.1)10	tanl(GLIBC_2.1)10	
casinl(GLIBC_2.1)10	csinl(GLIBC_2.1)10	frexp(GLIBC_2.1)11	nearbyint(GLIBC_2.1)10	tgamma(GLIBC_2.1)10	
catan(GLIBC_2.1)10	csqrt(GLIBC_2.1)10	frexpf(GLIBC_2.1)10	nearbyintf(GLIBC_2.1)10	tgammaf(GLIBC_2.1)10	
catanf(GLIBC_2.1)10	csqrtf(GLIBC_2.1)10	frexpl(GLIBC_2.1)10	nearbyintl(GLIBC_2.1)10	tgammal(GLIBC_2.1)10	
catanh(GLIBC_2.1)10	csqrtl(GLIBC_2.1)10	gamma(GLIBC_2.1)11	nextafter(GLIBC_2.1)11	trunc(GLIBC_2.1)10	
catanhf(GLIBC_2.1)10	ctan(GLIBC_2.1)10	gammaf(GLIBC_2.1)10	nextafterf(GLIBC_2.1)10	truncf(GLIBC_2.1)10	
catanhl(GLIBC_2.1)10	ctanf(GLIBC_2.1)10	gammal(GLIBC_2.1)10	nextafterl(GLIBC_2.1)10	truncl(GLIBC_2.1)10	
catanl(GLIBC_2.1)10	ctanh(GLIBC_2.1)10	hypot(GLIBC_2.1)11	nexttoward(GLIBC_2.1)10	y0(GLIBC_2.1)11	
cbrt(GLIBC_2.0)11	ctanhf(GLIBC_2.0)10	hypotf(GLIBC_2.0)10	nexttowardf(GLIBC_2.0)10	y0f(GLIBC_2.0)10	
cbrtf(GLIBC_2.0)10	ctanhl(GLIBC_2.0)10	hypotl(GLIBC_2.0)10	nexttowardl(GLIBC_2.0)10	y0l(GLIBC_2.0)10	
cbrtl(GLIBC_2.0)10	ctanl(GLIBC_2.0)10	ilogb(GLIBC_2.0)11	pow(GLIBC_2.0)10	y1(GLIBC_2.0)11	
ccos(GLIBC_2.1)10	dremf(GLIBC_2.1)10	ilogbf(GLIBC_2.1)10	pow10(GLIBC_2.1)10	y1f(GLIBC_2.1)10	
ccosf(GLIBC_2.1)10	dreml(GLIBC_2.1)10	ilogbl(GLIBC_2.1)10	pow10f(GLIBC_2.1)10	y1l(GLIBC_2.1)10	
ccosh(GLIBC_2.1)10	erf(GLIBC_2.1)11	j0(GLIBC_2.1)11	pow10l(GLIBC_2.1)10	yn(GLIBC_2.1)11	
ccoshf(GLIBC_2.1)10	erfc(GLIBC_2.1)11	j0f(GLIBC_2.1)10	powf(GLIBC_2.1)10	ynf(GLIBC_2.1)10	
ccoshl(GLIBC_2.1)10	erfcf(GLIBC_2.1)10	j0l(GLIBC_2.1)10	powl(GLIBC_2.1)10	ynl(GLIBC_2.1)10	
ccosl(GLIBC_2.1)10	erfcl(GLIBC_2.1)10	j1(GLIBC_2.1)11	remainder(GLIBC_2.1)11	
	
ceil(GLIBC_2.0)11	erff(GLIBC_2.0)10	j1f(GLIBC_2.0)10	remainderf(GLIBC_2.0)10	
	
ceilf(GLIBC_2.0)10	erfl(GLIBC_2.0)10	j1l(GLIBC_2.0)10	remainderl(GLIBC_2.0)10	
	
ceill(GLIBC_2.0)10	exp(GLIBC_2.0)11	jn(GLIBC_2.0)11	remquo(GLIBC_2.0)10	

Table 16-33. libm - Math Data Interfaces
signgam(GLIBC_2.0)11	

	

16.5. Data Definitions for libm
This section contains standard data definitions that describe system data. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content.
ISO C serves as the LSB reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.
16.6. Interfaces for libpthread
Table 16-34. libpthread Definition
Library:	libpthread	
SONAME:	libpthread.so.0	

The behavior of the interfaces in this library is specified by the following standards.
Linux Standard Base12	
CAE Specification, January 1997, System Interfaces and Headers (XSH),Issue 5 (ISBN: 1-85912-181-0, C606)13	

16.6.1. Posix Threads
Table 16-35. libpthread - Posix Threads Function Interfaces
pthread_attr_destroy(GLIBC_2.0)13	pthread_attr_setstackaddr(GLIBC_2.0)13	pthread_getspecific(GLIBC_2.0)13	pthread_once(GLIBC_2.0)13	pthread_setcanceltype(GLIBC_2.0)13	
pthread_attr_getdetachstate(GLIBC_2.0)13	pthread_attr_setstacksize(GLIBC_2.0)13	pthread_join(GLIBC_2.0)13	pthread_rwlock_destroy(GLIBC_2.0)13	pthread_setconcurrency(GLIBC_2.0)13	
pthread_attr_getguardsize(GLIBC_2.1)13	pthread_cancel(GLIBC_2.1)13	pthread_key_create(GLIBC_2.1)13	pthread_rwlock_init(GLIBC_2.1)13	pthread_setschedparam(GLIBC_2.1)13	
pthread_attr_getinheritsched(GLIBC_2.0)13	pthread_cond_broadcast(GLIBC_2.0)13	pthread_key_delete(GLIBC_2.0)13	pthread_rwlock_rdlock(GLIBC_2.0)13	pthread_setspecific(GLIBC_2.0)13	
pthread_attr_getschedparam(GLIBC_2.0)13	pthread_cond_destroy(GLIBC_2.0)13	pthread_kill(GLIBC_2.0)13	pthread_rwlock_timedrdlock(GLIBC_2.0)13	pthread_sigmask(GLIBC_2.0)13	
pthread_attr_getschedpolicy(GLIBC_2.0)13	pthread_cond_init(GLIBC_2.0)13	pthread_mutex_destroy(GLIBC_2.0)13	pthread_rwlock_timedwrlock(GLIBC_2.0)13	pthread_testcancel(GLIBC_2.0)13	
pthread_attr_getscope(GLIBC_2.0)13	pthread_cond_signal(GLIBC_2.0)13	pthread_mutex_init(GLIBC_2.0)13	pthread_rwlock_tryrdlock(GLIBC_2.0)13	sem_close(GLIBC_2.0)13	
pthread_attr_getstackaddr(GLIBC_2.1)13	pthread_cond_timedwait(GLIBC_2.1)13	pthread_mutex_lock(GLIBC_2.1)13	pthread_rwlock_trywrlock(GLIBC_2.1)13	sem_destroy(GLIBC_2.1)13	
pthread_attr_getstacksize(GLIBC_2.1)13	pthread_cond_wait(GLIBC_2.1)13	pthread_mutex_trylock(GLIBC_2.1)13	pthread_rwlock_unlock(GLIBC_2.1)13	sem_getvalue(GLIBC_2.1)13	
pthread_attr_init(GLIBC_2.1)13	pthread_condattr_destroy(GLIBC_2.1)13	pthread_mutex_unlock(GLIBC_2.1)13	pthread_rwlock_wrlock(GLIBC_2.1)13	sem_init(GLIBC_2.1)13	
pthread_attr_setdetachstate(GLIBC_2.0)13	pthread_condattr_init(GLIBC_2.0)13	pthread_mutexattr_destroy(GLIBC_2.0)13	pthread_rwlockattr_destroy(GLIBC_2.0)13	sem_open(GLIBC_2.0)13	
pthread_attr_setguardsize(GLIBC_2.1)13	pthread_create(GLIBC_2.1)13	pthread_mutexattr_getpshared(GLIBC_2.1)13	pthread_rwlockattr_getpshared(GLIBC_2.1)13	sem_post(GLIBC_2.1)13	
pthread_attr_setinheritsched(GLIBC_2.0)13	pthread_detach(GLIBC_2.0)13	pthread_mutexattr_gettype(GLIBC_2.0)13	pthread_rwlockattr_init(GLIBC_2.0)13	sem_timedwait(GLIBC_2.0)12	
pthread_attr_setschedparam(GLIBC_2.0)13	pthread_equal(GLIBC_2.0)13	pthread_mutexattr_init(GLIBC_2.0)13	pthread_rwlockattr_setpshared(GLIBC_2.0)13	sem_trywait(GLIBC_2.0)13	
pthread_attr_setschedpolicy(GLIBC_2.0)13	pthread_exit(GLIBC_2.0)13	pthread_mutexattr_setpshared(GLIBC_2.0)13	pthread_self(GLIBC_2.0)13	sem_unlink(GLIBC_2.0)13	
pthread_attr_setscope(GLIBC_2.0)13	pthread_getschedparam(GLIBC_2.0)13	pthread_mutexattr_settype(GLIBC_2.0)13	pthread_setcancelstate(GLIBC_2.0)13	sem_wait(GLIBC_2.0)13	

16.7. Data Definitions for libpthread
This section contains standard data definitions that describe system data. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content.
ISO C serves as the LSB reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.
16.8. Interfaces for libdl
Table 16-36. libdl Definition
Library:	libdl	
SONAME:	libdl.so.2	

16.8.1. Dynamic Loader
16.9. Data Definitions for libdl
This section contains standard data definitions that describe system data. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content.
ISO C serves as the LSB reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.
16.10. Interfaces for libcrypt
Table 16-37. libcrypt Definition
Library:	libcrypt	
SONAME:	libcrypt.so.1	

16.10.1. Encryption
16.11. Data Definitions for libcrypt
This section contains standard data definitions that describe system data. These definitions are organized into groups that correspond to system headers. This convention is used as a convenience for the reader, and does not imply the existence of these headers, or their content.
ISO C serves as the LSB reference programming language, and data definitions are specified in ISO C format. The C language is used here as a convenient notation. Using a C language description of these data objects does not preclude their use by other programming languages.
Notes
1. 	ISO/IEC 9899: 1999, Programming Languages --C
2. 	Large File Support
3. 	Linux Standard Base
4. 	IEEE Std POSIX.1-1996 [ISO/IEC 9945-1:1996]
5. 	CAE Specification, February 1997, Networking Services (XNS), Issue 5(ISBN: 1-85912-165-9, C523)
6. 	CAE Specification, January 1997, System Interfaces and Headers (XSH),Issue 5 (ISBN: 1-85912-181-0, C606)
7. 	The Single UNIX® Specification(SUS) Version 3
8. 	System V Interface Definition, Issue 3 (ISBN 0201566524)
9. 	System V Interface Definition,Fourth Edition
10. 	ISO/IEC 9899: 1999, Programming Languages --C
11. 	CAE Specification, January 1997, System Interfaces and Headers (XSH),Issue 5 (ISBN: 1-85912-181-0, C606)
12. 	Linux Standard Base
13. 	CAE Specification, January 1997, System Interfaces and Headers (XSH),Issue 5 (ISBN: 1-85912-181-0, C606)

VI. Package Format and Installation

Chapter 17. Software Installation
17.1. Package Architecture Considerations
All packages must specify an architecture of i486. A LSB runtime environment must accept an architecture of i486 even if the native architecture is different.
The archnum value in the Lead Section shall be 0x0001.

Appendix A. Alphabetical Listing of Interfaces
A.1. libc
The behaviour of the interfaces in this library is specified by the following Standards.
Linux Standard Base	

Table A-1. libc Function Interfaces
__divdi3(GLIBC_2.0)3	__udivdi33	ioperm(GLIBC_2.0)3	
__moddi33	__umoddi33	iopl()3	

Appendix B. GNU Free Documentation License
Version 1.1, March 2000
Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
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