The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/modules/miniroot/miniroot.c

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    1 /*      $NetBSD: miniroot.c,v 1.3 2008/11/16 15:47:35 ad 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 
   29 #include <sys/cdefs.h>
   30 __KERNEL_RCSID(0, "$NetBSD: miniroot.c,v 1.3 2008/11/16 15:47:35 ad Exp $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/kernel.h>
   34 #include <sys/module.h>
   35 
   36 #include <dev/md.h>
   37 
   38 MODULE(MODULE_CLASS_MISC, miniroot, NULL);
   39 
   40 static int
   41 miniroot_modcmd(modcmd_t cmd, void *arg)
   42 {
   43         void *addr;
   44         int error;
   45         size_t size;
   46 
   47         switch (cmd) {
   48         case MODULE_CMD_INIT:
   49                 error = module_find_section("miniroot", &addr, &size);
   50                 if (error == 0) {
   51                         if (size == 0) {
   52                                 error = EINVAL;
   53                         } else {
   54                                 md_root_setconf(addr, size);
   55                         }
   56                 }
   57                 return error;
   58 
   59         case MODULE_CMD_FINI:
   60                 return EOPNOTSUPP;
   61 
   62         default:
   63                 return ENOTTY;
   64         }
   65 }

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