sbin/hammer2/cmd_bulkfree.c

   1 /*
   2  * Copyright (c) 2015 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@dragonflybsd.org>
   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  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "hammer2.h"
  36
  37 int
  38 cmd_bulkfree(const char *sel_path)
  39 {
  40         hammer2_ioc_bulkfree_t bfi;
  41         int ecode;
  42         int fd;
  43         int res;
  44         size_t usermem;
  45         size_t usermem_size = sizeof(usermem);
  46
  47         bzero(&bfi, sizeof(bfi));
  48         usermem = 0;
  49         if (sysctlbyname("hw.usermem", &usermem, &usermem_size, NULL, 0) == 0)
  50                 bfi.size = usermem / 16;
  51         else
  52                 bfi.size = 0;
  53         if (bfi.size < 8192 * 1024)
  54                 bfi.size = 8192 * 1024;
  55
  56         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
  57                 return 1;
  58         res = ioctl(fd, HAMMER2IOC_BULKFREE_SCAN, &bfi);
  59         if (res) {
  60                 perror("ioctl");
  61                 ecode = 1;
  62         }
  63         ecode = 0;
  64         return ecode;
  65 }
  66
  67 #if 0
  68 int
  69 cmd_bulkfree_async(const char *sel_path)
  70 {
  71         hammer2_ioc_bulkfree_t bfi;
  72         int ecode;
  73         int fd;
  74         int res;
  75
  76         bzero(&bfi, sizeof(bfi));
  77         bfi.size = 8192 * 1024;
  78
  79         if ((fd = hammer2_ioctl_handle(sel_path)) < 0)
  80                 return 1;
  81         res = ioctl(fd, HAMMER2IOC_BULKFREE_ASYNC, &bfi);
  82         if (res) {
  83                 perror("ioctl");
  84                 ecode = 1;
  85         }
  86         ecode = 0;
  87         return ecode;
  88 }
  89 #endif