nlist(3)                   DG/UX 4.30                    nlist(3)



     NAME
          nlist - get entries from name list

     SYNOPSIS
          #include <nlist.h>

          int nlist (file-name, nl)
          char *file-name;
          struct nlist *nl;

     DESCRIPTION
          Nlist examines the name list in the executable file whose
          name is pointed to by file-name.  It selectively extracts a
          list of values and puts them in the array of nlist
          structures pointed to by nl.  The name list nl consists of
          an array of structures containing names of variables, types,
          and values.  The list is terminated with a null name; that
          is, a null string is in the name position of the structure.

          Each variable 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.  The type field will be
          set to 0 unless the file was compiled with the -g option.
          If the name is not found, both entries are set to 0.  See
          a.out(4) for a discussion of the symbol table structure.

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

     NOTES
          The <nlist.h> header file is automatically included by
          <a.out.h> for compatibility.  However, if the only
          information needed from <a.out.h> is for use of nlist, then
          including <a.out.h> is discouraged.  If <a.out.h> is
          included, the line #undef nname may need to follow it.

     SEE ALSO
          a.out(4).

     DIAGNOSTICS
          All value entries are set to 0 if the file cannot be read or
          if it does not contain a valid name list.

          Nlist returns -1 upon error; otherwise it returns 0.










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