kvm_nlist(3) [freebsd man page]

KVM_NLIST(3)						   BSD Library Functions Manual 					      KVM_NLIST(3)

NAME

     kvm_nlist -- retrieve symbol table names from a kernel image

LIBRARY

     Kernel Data Access Library (libkvm, -lkvm)

SYNOPSIS

     #include <kvm.h>
     #include <nlist.h>

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

DESCRIPTION

     The kvm_nlist() function retrieves the symbol table entries indicated by the name list argument nl.  This argument points to an array of
     nlist structures, terminated by an entry whose n_name field is NULL (see 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.

     The kldsym(2) system call is used to locate the symbol.  This is a less than perfect emulation of the nlist values but has the advantage of
     being aware of kernel modules and is reasonably fast.

RETURN VALUES

     The kvm_nlist() function returns the number of invalid entries found.  If the kernel symbol table was unreadable, -1 is returned.

SEE ALSO

     kldsym(2), kvm(3), kvm_close(3), kvm_getargv(3), kvm_getenvv(3), kvm_geterr(3), kvm_getprocs(3), kvm_open(3), kvm_openfiles(3), kvm_read(3),
     kvm_write(3)

BSD
								   June 4, 1993 							       BSD

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 rep-
       resenting 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(3UCB) or nlist(3ELF), depending on the library used.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

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

SEE ALSO

       kvm_open(3KVM), kvm_kread(3KVM), nlist(3ELF), nlist(3UCB), attributes(5)

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.

SunOS 5.10							    2 May 2002							   kvm_nlist(3KVM)