nlist(3) [linux man page]

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

NAME

     nlist -- retrieve symbol table name list from an executable file

LIBRARY

     Utility functions from BSD systems (libbsd, -lbsd)

SYNOPSIS

     #include <bsd/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 a.out(5)).  The argument nl is set to ref-
     erence 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

     a.out(5)

HISTORY

     A nlist() function appeared in Version 6 AT&T UNIX.

BSD                                                               April 19, 1994                                                               BSD

nlist(3)						     Library Functions Manual							  nlist(3)

NAME

       nlist - Gets 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 libmld.a library due to the difference in the object file format.
       Programs that need to use nlist must be linked with the -lmld flag.

       The nlist subroutine 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 BSD compatibility, the nlist subroutine allows symbol names to be preceded by an underscore.  If it does not find a symbol that matches
       the name as specified, nlist attempts to locate the symbol name with the leading underscore removed.

       For the structure declaration, see /usr/include/nlist.h.

       To  obtain  up-to-date  system addresses from the system name list kept in the file /vmunix, use the knlist subroutine.	Alternatively, use
       the getsysinfo function to obtain the name of the file from which the kernel was booted, prepend a slash character ("/") to this name,  and
       supply  the  prepended  name  to  the  nlist subroutine.  Do not specify /vmunix as the filename  to the nlist subroutine; nlist may return
       invalid symbol addresses.

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.

RELATED INFORMATION

       getsysinfo(2), knlist(3), a.out(4) delim off

																	  nlist(3)