ldfhread(3x)
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ldfhread Subroutine
read the file header of an executable file in DG/UX
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SYNTAX
#include <stdio.h>
#include <sys/types.h>
#include <filehdr.h>
#include <ldfcn.h>
int ldfhread (ldptr, filehead)
LDFILE *ldptr;
FILHDR *filehead;
DESCRIPTION
Ldfhread reads the file header of the executable file currently
associated with ldptr into the area of memory beginning at
filehead.
Ldfhread returns SUCCESS or FAILURE. Ldfhread will fail if it
cannot read the file header.
In most cases you can avoid using ldfhread by using the macro
HEADER(ldptr) defined in ldfcn.h (see ldfcn (4)). The
information in any field, fieldname, of the file header may be
accessed using HEADER(ldptr).fieldname or
HEADER.(ldptr)sectionname.fieldname (for a field within a section
descriptor).
The program must be loaded with the executable file access
routine library libld.a.
SEE ALSO
ldclose(3X), ldopen(3X), ldshread(3X), ldsyshread(3X),
filehdr(4), ldfcn(4).
CAVEATS
The executable file format is used only for executable files
(load modules), not for object files.
DG/UX 4.00 Page 1
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