HP-UX Reference (11i v1 05/09) - 3 Library Functions A-M (vol 6)

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elf_getarhdr(3E) elf_getarhdr(3E)

NAME

elf_getarhdr - retrieve archive member header

SYNOPSIS

cc [ﬂag... ] ﬁle...

-lelf [library] ...

#include <libelf.h>

Elf_Arhdr *elf_getarhdr(Elf *elf);

DESCRIPTION

elf_getarhdr returns a pointer to an archive member header, if one is available for the ELF descriptor

elf. Otherwise, no archive member header exists, an error occurred, or elf was null;

elf_getarhdr then

returns a null value. The header includes the following members.

char *ar_name;

time_t ar_date;

long ar_uid;

long ar_gid;

unsigned long ar_mode;

off_t ar_size;

char *ar_rawname;

An archive member name, available through ar_name, is a null-terminated string, with the

ar format

control characters removed. The

ar_rawname member holds a null-terminated string that represents the

original name bytes in the ﬁle, including the terminating slash and trailing blanks as speciﬁed in the

archive format.

In addition to ‘‘regular’’ archive members, the archive format deﬁnes some special members. All special

member names begin with a slash (/), distinguishing them from regular members (whose names may not

contain a slash). These special members have the names (ar_name) deﬁned below.

/ This is the archive symbol table. If present, it will be the ﬁrst archive member. A program may

access the archive symbol table through elf_getarsym . The information in the symbol table is

useful for random archive processing (see elf_rand(3E)).

// This member, if present, holds a string table for long archive member names. An archive member’s

header contains a 16-byte area for the name, which may be exceeded in some ﬁle systems. The library

automatically retrieves long member names from the string table, setting ar_name to the appropri-

ate value.

Under some error conditions, a member’s name might not be available. Although this causes the library to

set ar_name to a null pointer, the ar_rawname member will be set as usual.