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nlist(3) [osx man page]

NLIST(3)						   BSD Library Functions Manual 						  NLIST(3)

NAME
nlist -- retrieve symbol table name list from an executable file SYNOPSIS
#include <mach-o/nlist.h> int nlist(const char *filename, struct nlist *nl); DESCRIPTION
The nlist() function retrieves name list entries from the symbol table of an executable file. (See <mach-o/nlist.h>) 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. RETURN VALUES
The number of invalid entries is returned if successful; otherwise, if the file filename does not exist or is not executable, the returned value is -1. SEE ALSO
Mach-O(5) HISTORY
A nlist() function appeared in Version 6 AT&T UNIX. Darwin April 19, 1994 Darwin

Check Out this Related Man Page

nlist(3ELF)						       ELF Library Functions						       nlist(3ELF)

NAME
nlist - get entries from name list SYNOPSIS
cc [ flag... ] file ... -lelf [ library ... ] #include <nlist.h> int nlist(const char *filename, struct nlist *nl); DESCRIPTION
nlist() examines the name list in the executable file whose name is pointed to by filename, and 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, value, storage class, and section number of the name are inserted in the other fields. The type field may be set to 0 if the file was not compiled with the -g option to cc(1B). nlist() will always return the information for an external symbol of a given name if the name exists in the file. If an external symbol does not exist, and there is more than one symbol with the specified name in the file (such as static symbols defined in separate files), the values returned will be for the last occurrence of that name in the file. If the name is not found, all fields in the structure except n_name are set to 0. This function is useful for examining the system name list kept in the file /dev/ksyms. In this way programs can obtain system addresses that are up to date. RETURN VALUES
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 0 on success, -1 on error. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
cc(1B), elf(3ELF), kvm_nlist(3KVM), kvm_open(3KVM), libelf(3LIB), a.out(4), attributes(5), ksyms(7D), mem(7D) SunOS 5.11 11 Jul 2001 nlist(3ELF)

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