Digital

NAME

nlist − get entries from name list

SYNOPSIS

#include <nlist.h>

nlist(filename, nl)
char ∗filename;
struct nlist nl[];

cc ... -lmld

DESCRIPTION

NOTE: The nlist subroutine has moved from the standard C library to the “mld” library due to the difference in the object file format.  Programs that need to use nlist must be linked with the −lmld option. 

nlist examines the name list in the given executable output file and selectively extracts a list of values.  The name list consists of an array of structures containing names, types and values.  The list is terminated with a null name.  Each name is looked up in the name list of the file.  If the name is found, the type and value of the name are inserted in the next two fields.  If the name is not found, both entries are set to 0.  For the structure declaration, see /usr/include/nlist.h.

This subroutine is useful for examining the system name list kept in the file /unix. In this way programs can obtain system addresses that are up to date.

RELATED INFORMATION

a.out(4)

ERRORS

If the file cannot be found or if it is not a valid namelist −1 is returned; otherwise, the number of unfound namelist entries is returned. 

The type entry is set to 0 if the symbol is not found.