sbin/hammer/hammer_util.h

   1 /*
   2  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   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  * $DragonFly: src/sbin/hammer/hammer_util.h,v 1.3 2007/11/20 07:16:27 dillon Exp $
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/diskslice.h>
  39 #include <sys/diskmbr.h>
  40 #include <sys/stat.h>
  41 #include <sys/time.h>
  42 #include <vfs/hammer/hammer_alist.h>
  43 #include <vfs/hammer/hammer_disk.h>
  44
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <stdarg.h>
  48 #include <stddef.h>
  49 #include <unistd.h>
  50 #include <string.h>
  51 #include <errno.h>
  52 #include <fcntl.h>
  53 #include <uuid.h>
  54 #include <assert.h>
  55 #include <err.h>
  56
  57 struct supercl_info;
  58 struct cluster_info;
  59 struct buffer_info;
  60
  61 /*
  62  * These structures are used by newfs_hammer to track the filesystem
  63  * buffers it constructs while building the filesystem.  No attempt
  64  * is made to try to make this efficient.
  65  */
  66 struct volume_info {
  67         struct volume_info *next;
  68         int             vol_no;
  69         int64_t         vol_alloc;
  70
  71         const char      *name;
  72         int             fd;
  73         off_t           size;
  74         const char      *type;
  75
  76         struct hammer_alist_live clu_alist;     /* cluster allocator */
  77         struct hammer_alist_live buf_alist;     /* buffer head only */
  78         struct hammer_volume_ondisk *ondisk;
  79
  80         struct supercl_info *supercl_base;
  81         struct cluster_info *cluster_base;
  82 };
  83
  84 struct supercl_info {
  85         struct supercl_info     *next;
  86         int32_t                 scl_no;
  87         int64_t                 scl_offset;
  88
  89         struct volume_info      *volume;
  90
  91         struct hammer_alist_live clu_alist;
  92         struct hammer_alist_live buf_alist;
  93         struct hammer_supercl_ondisk *ondisk;
  94 };
  95
  96 struct cluster_info {
  97         struct cluster_info     *next;
  98         int32_t                 clu_no;
  99         int64_t                 clu_offset;
 100
 101         struct supercl_info     *supercl;
 102         struct volume_info      *volume;
 103
 104         struct hammer_alist_live alist_master;
 105         struct hammer_alist_live alist_btree;
 106         struct hammer_alist_live alist_record;
 107         struct hammer_alist_live alist_mdata;
 108         struct hammer_cluster_ondisk *ondisk;
 109
 110         struct buffer_info      *buffer_base;
 111 };
 112
 113 struct buffer_info {
 114         struct buffer_info      *next;
 115         int32_t                 buf_no;
 116         int64_t                 buf_offset;
 117
 118         struct cluster_info     *cluster;
 119         struct volume_info      *volume;
 120
 121         struct hammer_alist_live alist;
 122         hammer_fsbuf_ondisk_t   ondisk;
 123 };
 124
 125 extern struct hammer_alist_config Buf_alist_config;
 126 extern struct hammer_alist_config Vol_normal_alist_config;
 127 extern struct hammer_alist_config Vol_super_alist_config;
 128 extern struct hammer_alist_config Supercl_alist_config;
 129 extern struct hammer_alist_config Clu_master_alist_config;
 130 extern struct hammer_alist_config Clu_slave_alist_config;
 131 extern uuid_t Hammer_FSType;
 132 extern uuid_t Hammer_FSId;
 133 extern int64_t ClusterSize;
 134 extern int UsingSuperClusters;
 135 extern int NumVolumes;
 136 extern struct volume_info *VolBase;
 137
 138 uint32_t crc32(const void *buf, size_t size);
 139
 140 struct volume_info *get_volume(int32_t vol_no);
 141 struct supercl_info *get_supercl(struct volume_info *vol, int32_t scl_no);
 142 struct cluster_info *get_cluster(struct volume_info *vol, int32_t clu_no);
 143 struct buffer_info *get_buffer(struct cluster_info *cl, int32_t buf_no,
 144                                 int64_t buf_type);
 145 void *alloc_btree_element(struct cluster_info *cluster, int32_t *offp);
 146 void *alloc_data_element(struct cluster_info *cluster,
 147                                 int32_t bytes, int32_t *offp);
 148 void *alloc_record_element(struct cluster_info *cluster, int32_t *offp);
 149
 150 void flush_all_volumes(void);
 151 void flush_volume(struct volume_info *vol);
 152 void flush_supercl(struct supercl_info *supercl);
 153 void flush_cluster(struct cluster_info *cl);
 154 void flush_buffer(struct buffer_info *buf);
 155
 156 void hammer_super_alist_template(struct hammer_alist_config *conf);
 157 void hammer_buffer_alist_template(struct hammer_alist_config *conf);