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.\"     @(#)nlist.3	8.3 (Berkeley) 4/19/94
.\" $FreeBSD: /repoman/r/ncvs/src/lib/libc/gen/nlist.3,v 1.7 2001/10/01 16:08:51 ru Exp $
.\"
.Dd April 19, 1994
.Dt NLIST 3bsd
.Os
.Sh NAME
.Nm nlist
.Nd retrieve symbol table name list from an executable file
.Sh LIBRARY
.ds str-Lb-libbsd Utility functions from BSD systems (libbsd, \-lbsd)
.ds doc-str-Lb-libbsd \*[str-Lb-libbsd]
.Lb libbsd
.Sh SYNOPSIS
.In nlist.h
(See
.Xr libbsd 7
for include usage.)
.Ft int
.Fn nlist "const char *filename" "struct nlist *nl"
.Sh DESCRIPTION
The
.Fn nlist
function
retrieves name list entries from the symbol table of an
executable file (see
.Xr elf 5 ) .
The argument
.Fa \&nl
is set to reference the
beginning of the list.
The list is preened of binary and invalid data;
if an entry in the
name list is valid, the
.Fa n_type
and
.Fa n_value
for the entry are copied into the list
referenced by
.Fa \&nl .
No other data is copied.
The last entry in the list is always
.Dv NULL .
.Sh RETURN VALUES
The number of invalid entries is returned if successful; otherwise,
if the file
.Fa filename
does not exist or is not executable,
or the nl pointer is
.Dv NULL ,
the returned value is \-1.
.Sh SEE ALSO
.Xr elf 5
.Sh HISTORY
A
.Fn nlist
function appeared in
.At v6 .
c3-lang/libbsd/man/nlist.3bsd

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