The
kvm_nlist ();
function retrieves the symbol table entries indicated by the name list argument
Fa 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.
