external/bsd/iscsi/dist/src/initiator/libkmod.h

   1 /*      $NetBSD: libkmod.h,v 1.1 2009/06/20 04:12:55 agc Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 #ifndef LIBKMOD_H_
  29 #define LIBKMOD_H_      20090619
  30
  31 #include <sys/module.h>
  32
  33 #include <stdio.h>
  34
  35 /* this struct describes the loaded modules in the kernel */
  36 typedef struct kernel_t {
  37         size_t          size;   /* size of iovec array */
  38         size_t          c;      /* counter during "read" operations */
  39         struct iovec    iov;    /* iovecs from the modctl operation */
  40 } kernel_t;
  41
  42 /* this struct describes a module */
  43 typedef struct kmod_t {
  44         char            *name;          /* module name */
  45         char            *class;         /* module class */
  46         char            *source;        /* source of module loading */
  47         int              refcnt;        /* reference count */
  48         unsigned         size;          /* size of binary module */
  49         char            *required;      /* any pre-reqs module has */
  50 } kmod_t;
  51
  52 /* low level open, read, write ops */
  53 int openkmod(kernel_t *);
  54 int readkmod(kernel_t *, kmod_t *);
  55 void freekmod(kmod_t *);
  56 int closekmod(kernel_t *);
  57
  58 /* high-level kmod operations */
  59 int kmodstat(const char *, FILE *);
  60 int kmodload(const char *);
  61 int kmodunload(const char *);
  62
  63 #endif