AT&T UNIX™PC Unix System V Users Manual - tenox

LDFCN( 4) LDFCN ( 4)
ldfhread(3X)
read the file header of a common object
file
ldshread(3X) and ldnshread
read a section header of a common object
file �I
ldtbread(3X)
read a symbol table entry of a common
object file
(3) functions that position an object file at (seek to) the
start of the section, relocation, or line number information
for a particular section.
ldohseek(3X)
seek to the optional file header of a common
object file
ldsseek (3X) and ldnsseek
seek to a section of a common object file
ldrseek (3X) and ldnrseek
seek to the relocation information for a
section of a common object file
ldlseek (3X) and ldnlseek
seek to the line number information for a
section of a common object file
ldtbseek (3X)
seek to the symbol table of a common
object file
( 4) the function ldtbindex(3X) which returns the index of
a particular common object file symbol table entry
These functions are described in detail in their respective manual
pages.
All the functions except ldopen, ldaopen and ldtbindex return
either SUCCESS or FAILURE, both constants defined in ldfcn.h.
Ldopen and ldaopen both return pointers to a LDFILE structure.
MACROS
Additional access to an object file is provided through a set of
macros defined in ldfcn.h. These macros parallel the standard
input/output file reading and manipulating functions, translating
a reference of the LDFILE structure into a reference to its file
descriptor field.
The following macros are provided:
LDFILE •ldptr;
GETC(Idptr)
FGETC(Idptr)
GETW(Idptr)
UNGETC(c, ldptr)
FGETS(s, n, ldptr)
FREAD(( char *) ptr, sizeof (•ptr), nitems, ldptr)
FSEEK(Idptr, offset, ptrname)
FTELL(Idptr)
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