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 appropriate 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.
Printable version
