KVM_NLIST(3KVM) Kernel VM Library Functions KVM_NLIST(3KVM)

NAME

kvm_nlist - get entries from kernel symbol table

SYNOPSIS

cc [ flag... ] file... -lkvm [ library...]
#include <kvm.h>
#include <nlist.h>

int kvm_nlist(kvm_t *kd, struct nlist *nl);

DESCRIPTION

The kvm_nlist() function examines the symbol table from the kernel image
identified by kd (see kvm_open(3KVM)) and selectively extracts a list of
values and puts them in the array of nlist structures pointed to by nl.
The name list pointed to by nl consists of an array of structures
containing names, types and values. The n_name field of each such
structure is taken to be a pointer to a character string representing a
symbol name. The list is terminated by an entry with a null pointer (or
a pointer to a null string) in the n_name field. For each entry in nl,
if the named symbol is present in the kernel symbol table, its value and
type are placed in the n_value and n_type fields. If a symbol cannot be
located, the corresponding n_type field of nl is set to 0.

RETURN VALUES

The kvm_nlist() functions returns the value of nlist(3ELF).

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Stable |
+--------------------+-----------------+
|MT-Level | Unsafe |
+--------------------+-----------------+

SEE ALSO

nlist(3ELF), kvm_kread(3KVM), kvm_open(3KVM), attributes(7)

NOTES

Although the libkvm API is Stable, the symbol names and data values that
can be accessed through this set of interfaces are Private and are
subject to ongoing change.

May 13, 2017 KVM_NLIST(3KVM)