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NAME

elf_getdata

 
elf_newdata

 
elf_rawdata

 - iterate through or allocate section data

 

LIBRARY

Lb libelf

 

SYNOPSIS

DESCRIPTION

Function elf_getdata ();
will return the next data descriptor associated with section descriptor scn The returned data descriptor will be setup to contain translated data. Argument data may be NULL, in which case the function returns the first data descriptor associated with section scn If argument data is not NULL, it must be a pointer to a data descriptor associated with section descriptor scn and function elf_getdata ();
will return a pointer to the next data descriptor for the section, or NULL when the end of the section's descriptor list is reached.

Function elf_newdata ();
will allocate a new data descriptor and append it to the list of data descriptors associated with section descriptor scn The new data descriptor will be initialized as follows:

d_align

Set to 1.

d_buf

Initialized to NULL.

d_off

Set to (off_t) -1. This field is under application control if the ELF_F_LAYOUT flag was set on the ELF descriptor.

d_size

Set to zero.

d_type

Initialized to ELF_T_BYTE

d_version

Set to the current working version of the library, as set by elf_version3.

The application must set these values as appropriate before calling elf_update3. Section scn must be associated with an ELF file opened for writing. If the application has not requested full control of layout by setting the ELF_F_LAYOUT flag on descriptor elf then the data referenced by the returned descriptor will be positioned after the existing content of the section, honoring the file alignment specified in member d_align On successful completion of a call to elf_newdata (,);
the ELF library will mark the section scn as ``dirty''

Function elf_rawdata ();
is used to step through the data descriptors associated with section scn In contrast to function elf_getdata (,);
this function returns untranslated data. If argument data is NULL, the first data descriptor associated with section scn is returned. If argument data is not NULL, is must be a data descriptor associated with section scn and function elf_rawdata ();
will return the next data descriptor in the list, or NULL if no further descriptors are present. Function elf_rawdata ();
always returns Vt Elf_Data structures of type ELF_T_BYTE  

RETURN VALUES

ERRORS

Bq Er ELF_E_ARGUMENT

Arguments scn was NULL.

Bq Er ELF_E_ARGUMENT

Data descriptor data was not associated with section descriptor scn

Bq Er ELF_E_RESOURCE

An out of memory condition was detected.

SEE ALSO

Index

NAME

LIBRARY

SYNOPSIS

DESCRIPTION

RETURN VALUES

ERRORS

SEE ALSO

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