.\"	$NetBSD: kvm_nlist.3,v 1.10 2003/05/13 10:03:43 wiz Exp $
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.\"     @(#)kvm_nlist.3	8.1 (Berkeley) 6/4/93
.\"
.Dd May 11, 2003
.Dt KVM_NLIST 3
.Os
.Sh NAME
.Nm kvm_nlist
.Nd retrieve symbol table names from a kernel image
.Sh LIBRARY
.Lb libkvm
.Sh SYNOPSIS
.In kvm.h
.In nlist.h
.Ft int
.Fn kvm_nlist "kvm_t *kd" "struct nlist *nl"
.Sh DESCRIPTION
.Fn kvm_nlist
retrieves the symbol table entries indicated by the name list argument
.Fa \&nl .
This argument points to an array of nlist structures, terminated by
an entry whose n_name field is
.Dv NULL
(see
.Xr nlist 3 ) .
Each symbol is looked up using the n_name field, and if found, the
corresponding n_type and n_value fields are filled in.
These fields are set to 0 if the symbol is not found.
.Pp
If
.Fa \&kd
was created by a call to
.Fn kvm_open
with a
.Dv NULL
executable image name,
.Fn kvm_nlist
will use
.Pa /dev/ksyms
to retrieve the kernel symbol table.
.Sh RETURN VALUES
The
.Fn kvm_nlist
function returns the number of invalid entries found.
If the kernel symbol table was unreadable, -1 is returned.
.Sh FILES
.Bl -tag -width /dev/ksyms -compact
.It Pa /dev/ksyms
.El
.Sh SEE ALSO
.Xr kvm 3 ,
.Xr kvm_close 3 ,
.Xr kvm_getargv 3 ,
.Xr kvm_getenvv 3 ,
.Xr kvm_geterr 3 ,
.Xr kvm_getprocs 3 ,
.Xr kvm_open 3 ,
.Xr kvm_openfiles 3 ,
.Xr kvm_read 3 ,
.Xr kvm_write 3 ,
.Xr ksyms 4