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 90