Shared Library Management Routines

The dlopen Shared Library Management Routines

The dlget Routine

Retrieves information about a loaded module (program or shared library).

Syntax

void *dlget(unsigned int index, struct load_module_desc *desc, size_t desc_size);

Parameters

Parameter

Definition

 

 

index

Specifies the requested shared library by its placement

 

on the dynamic loader's search list. An index of zero

 

requests information about the program file itself. An

 

index of -1 requests info about the dynamic loader.

 

 

desc

Must be preallocated by the user. The structure

 

members are filled in by the dynamic loader with

 

information about the requested shared library.

 

 

desc_size

Specifies the size in bytes of the load_module_desc

 

structure sent in by the user.

 

 

Return Values

If successful, dlget returns a handle for the shared library as defined by the return value from dlopen(). If a call to dlget is unsuccessful, a NULL pointer is returned and desc remains unchanged.

Description

dlget is one of a family of routines that give the user direct access to the dynamic linking facilities. dlget retrieves information about a load module from an index specifying the placement of a load module in the dynamic loader’s search list.

A load_module_desc structure has the following members:

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Kenwood HP 9000 manual Dlget Routine, 248

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