The
nlist() function retrieves name list entries from the symbol table of an executable file. (See
a.out(5).) The argument
nl is set to reference the beginning of the list. The list is preened of binary and invalid data; if an entry in the name list is valid, the
n_type and
n_value for the entry are copied into the list referenced by
nl. No other data is copied. The last entry in the list is always
NULL.