freebsd-skq/lib/libelf/elf_getarhdr.3
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.\" Copyright (c) 2006 Joseph Koshy. All rights reserved.
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.\" $FreeBSD$
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.Dd August 15, 2006
.Os
.Dt ELF_GETARHDR 3
.Sh NAME
.Nm elf_getarhdr
.Nd retrieve ar(1) header for an archive member
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft "Elf_Arhdr *"
.Fn elf_getarhdr "Elf *elf"
.Sh DESCRIPTION
The
.Fn elf_getarhdr
function returns a pointer to an archive member header for
a descriptor
.Ar elf .
This descriptor must have been returned by a prior call to
.Xr elf_begin 3 ,
and must be a descriptor for a member inside an
.Xr ar 1
archive.
.Pp
Structure
.Vt Elf_Arhdr
includes the following members:
.Bl -tag -width indent
.It Vt "char *" Va ar_name
A pointer to a null terminated string with the archive
member's name inside the archive.
.It Vt "char *" Va ar_rawname
A pointer to a null terminated string that representing the
name in the archive symbol table, including the formatting characters
used by
.Xr ar 1 .
.It Vt time_t Va ar_date
The timestamp associated with the member.
.It Vt uid_t Va ar_uid
The uid of the creator of the member.
.It Vt gid_t Va ar_gid
The gid of the creator of the member.
.It Vt mode_t Va ar_mode
The file mode of the member.
.It Vt size_t Va ar_size
The size of the member in bytes.
.El
.Sh RETURN VALUES
This function returns a valid pointer to an
.Vt Elf_Arhdr
structure if successful, or NULL if an error is encountered.
.Sh ERRORS
Function
.Fn elf_getarhdr
may fail with the following errors:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was NULL.
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was not a descriptor for a member of an
.Xr ar 1
archive.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr elf_begin 3 ,
.Xr elf_getarsym 3 ,
.Xr elf_memory 3