Проект OpenNet: MAN kldsym (2) Системные вызовы (FreeBSD и Linux)

Интерактивная система просмотра системных руководств (man-ов)

kldsym (2)

>> kldsym (2) ( FreeBSD man: Системные вызовы )

BSD mandoc

NAME



kldsym

 - look up address by symbol name in a KLD

LIBRARY

Lb libc

SYNOPSIS

#include <sys/param.h>
#include <sys/linker.h>
int kldsym (int fileid int command void *data);

DESCRIPTION

The kldsym ();
system call returns the address of the symbol specified in Fa data in the module specified by Fa fileid . If Fa fileid is 0, all loaded modules are searched. Currently, the only Fa command implemented is KLDSYM_LOOKUP

The Fa data argument is of the following structure:

struct kld_sym_lookup {
    int         version;        /* sizeof(struct kld_sym_lookup) */
    char        *symname;       /* Symbol name we are looking up */
    u_long      symvalue;
    size_t      symsize;
};

The version member is to be set by the code calling kldsym ();
to sizeof (struct kld_sym_lookup .);
The next two members, version and symname are specified by the user. The last two, symvalue and symsize are filled in by kldsym ();
and contain the address associated with symname and the size of the data it points to, respectively.

RETURN VALUES

Rv -std kldsym

ERRORS

The kldsym ();
system call will fail if:

Bq Er EINVAL: Invalid value in Fa data->version or Fa command .
Bq Er ENOENT: The Fa fileid argument is invalid, or the specified symbol could not be found.