Shared Library Management Routines

The shl_load Shared Library Management Routines

One of the following modifiers can be ORed with both the EXPORT_SYMBOLS and the INITIALIZERS flags:

 

NO_VALUES

Do not calculate the value field of

 

 

 

the shl_symbol structure for

 

 

 

symbols. The value field has an

 

 

 

undefined value.

 

GLOBAL_VALUES

 

 

 

 

For symbols that are defined in

 

 

 

multiple libraries, this flag causes

 

 

 

shl_getsymbols to return the

 

 

 

most-visible occurrence, and to set

 

 

 

the value and handle fields of the

 

 

 

shl_symbol structure (defined in

 

 

 

the description of the symbols

 

 

 

parameter).

memfunc

Points to a function that has the same interface (calling

 

conventions and return value) as malloc(3C). The

 

shl_getsymbols function uses this function to

 

allocate memory to store the array of symbol records,

 

symbols.

 

 

symbols

This points to an array of symbol records for all

 

symbols that match the criteria determined by the type

 

and value parameters. The type of these records is

 

struct shl_symbol, defined in <dl.h> as:

 

struct shl_symbol {

 

char * name;

 

 

short

type;

 

 

void * value;

 

 

shl_t

handle;

 

};

 

 

The members of this structure are described in “The shl_symbol Structure”.

Return Value

If successful, shl_getsymbols returns the number of symbols found; otherwise, −1 is returned and shl_getsymbols sets errno to one of these values:

ENOEXEC

A format error was detected in the specified library.

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Chapter 6

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Kenwood HP 9000 manual Memfunc, Symbols, 234

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