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C POSIX library

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C POSIX library

The C POSIX library is a specification of a C standard library for POSIX systems. It was developed at the same time as the ANSI C standard. Some effort was made to make POSIX compatible with standard C; POSIX includes additional functions to those introduced in standard C.

C POSIX library header files

Note this table does not include the header files defined by the ISO C standard.

Header File Description First Released
Asynchronous input and output Issue 5
Functions for manipulating numeric IP addresses (part of Berkeley sockets) Issue 6
<assert.h> Verify Assumptions ??
Complex Arithmetic, see C mathematical functions ??
Magic numbers for the cpio archive format. Issue 3
<dirent.h> Allows the opening and listing of directories. Issue 2
Dynamic linking Issue 5
<errno.h> Retrieving Error Number ??
<fcntl.h> File opening, locking and other operations. Issue 1
<fenv.h> Floating-Point Environment, see C mathematical functions ??
<float.h> Floating Types, see C data types ??
Message display structures Issue 4
Filename matching Issue 4
File tree traversal Issue 1
Pathname "globbing" (pattern-matching) Issue 4
User group information and control. Issue 1
Codeset conversion facility Issue 4
Fixed Size Integer Types, see C data types ??
Alternative Spellings, see C alternative tokens ??
Language information constants. Build on C localization functions Issue 2
Pathname manipulation Issue 4
Implementation-Defined Constants, see C data types ??
Category Macros, see C localization functions ??
''' || Mathematical Declarations, see || ?? |- |''' ''' || String formatting of monetary units || Issue 4 |- |''' ''' || || Issue 5 |- |''' ''' || database operations || Issue 4 |- |''' ''' || Listing of local s || Issue 6 |- |''' ''' || Translating protocol and host names into numeric addresses. Part of || Issue 6 |- |''' ''' || Defines Internet protocol and address family. Part of || Issue 6 |- |''' ''' || Additional control options. Part of || Issue 6 |- |''' ''' || Localization message catalog functions || Issue 2 |- |''' ''' || || Issue 4 |- |''' ''' || Defines an API for creating and manipulating . || Issue 5 |- |''' <> ''' || (user information) access and control. || Issue 1 |- |''' ''' || matching || Issue 4 |- |''' ''' || Execution scheduling || Issue 5 |- |''' ''' || Search tables || Issue 1 |- |''' || POSIX || Issue 5 |- |''' <> || Stack Environment Declarations || ?? |- |''' || Signals, see || ?? |- |''' || Process || Issue 6 |- |''' <> || Handle Variable Argument List || ?? |- |''' || Boolean Type and Values, see || ?? |- |''' || Standard Type Definitions, see || ?? |- |''' || Integer Types, see || ?? |- |''' || Standard Buffered Input/Oupt, see || ?? |- |''' || Standard Library Definitions, see || ?? |- |''' || Several String Operations, see || ?? |- |''' || Case-insensitive string comparisons || Issue 4 |- |''' || Stream manipulation, including || Issue 4 |- |''' <>''' || (IPC). || Issue 2 |- |'''''' || Memory management, including POSIX and || Issue 4 |- |'''''' || POSIX s. || Issue 2 |- |'''''' || Resource usage, priorities, and limiting || Issue 4 |- |'''''' || || Issue 6 |- |'''''' || XSI ( style) || Issue 2 |- |''' || XSI ( style) || Issue 2 |- |''' ''' || Main header || Issue 6 |- |'''''' || File information ( et al.). || Issue 1 |- |''' || File System information || Issue 4 |- |''' ''' || Time and date functions and structures. || Issue 4 |- |'''''' || File access and modification times || Issue 1 |- |''' <>''' || Various data types used elsewhere. || Issue 1 |- |'''''' || operations || Issue 4 |- |'''''' || s || Issue 6 |- |''' <>''' || Operating system information, including || Issue 1 |- |''' <>''' || Status of terminated child processes (see ) || Issue 3 |- |'''''' || || Issue 4 |- |'''''' || s for the archive format. || Issue 3 |- |''' <>''' || Allows interfaces. || Issue 3 |- |''' <>''' || Type-Generic Macros, see || ?? |- |''' <>''' || Type-Generic Macros, see || ?? |- |''' ''' || Tracing of runtime behavior (DEPRECATED) || Issue 6 |- |''' ''' || Resource limiting (DEPRECATED in favor of ) || Issue 1 |- |''' <>''' || Various essential POSIX functions and constants. || Issue 1 |- |''' <>''' || access and modification times. || Issue 3 |- |''' ''' || user accounting database functions || Issue 4 |- |''' ''' || Wide-Character Handling, see || ?? |- |''' ''' || Wide-Character Classification and Mapping Utilities, see || ?? |- |'''''' || Word-expansion like the would perform || Issue 4 |} ==References== * [http://www.opengroup.org/onlinepubs/9699919799/idx/head.html Official List of headers in the POSIX library on opengroup.org] * * [http://www.cs.utah.edu/flux/oskit/html/oskit-wwwch20.html Description of the posix library from the Flux OSKit] ==Further reading== * | pages = 564 | isbn = 1-56592-074-0 | url = http://oreilly.com/catalog/9781565920743/ }}
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