1 /* 2 * Copyright (c) 2011 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Antonio Huete <tuxillo@quantumachine.net> 6 * by Matthew Dillon <dillon@backplane.com> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 3. Neither the name of The DragonFly Project nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific, prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 37 #ifndef _LIBHAMMER_H_ 38 #define _LIBHAMMER_H_ 39 40 #include <sys/queue.h> 41 #include <sys/param.h> 42 43 #include <vfs/hammer/hammer_disk.h> 44 #include <vfs/hammer/hammer_ioctl.h> 45 46 #define TXTLEN 64 47 48 #define HAMMER_BUFLISTS 64 49 #define HAMMER_BUFLISTMASK (HAMMER_BUFLISTS - 1) 50 #define COLLECT_HSIZE 1024 51 #define COLLECT_HMASK (COLLECT_HSIZE - 1) 52 #define HAMMER_BUFINFO_READAHEAD 0x0001 53 /* 54 * WARNING: Do not make the SNAPSHOTS_BASE "/var/snapshots" because 55 * it will interfere with the older HAMMER VERS < 3 snapshots directory 56 * for the /var PFS. 57 */ 58 #define SNAPSHOTS_BASE "/var/hammer" /* HAMMER VERS >= 3 */ 59 #define WS " \t\r\n" 60 61 #define SERIALBUF_SIZE (512 * 1024) 62 #define RD_HSIZE 32768 63 #define RD_HMASK (RD_HSIZE - 1) 64 65 #define DICTF_MADEDIR 0x01 66 #define DICTF_MADEFILE 0x02 67 #define DICTF_PARENT 0x04 /* parent attached for real */ 68 #define DICTF_TRAVERSED 0x80 69 #define FLAG_TOOFARLEFT 0x0001 70 #define FLAG_TOOFARRIGHT 0x0002 71 #define FLAG_BADTYPE 0x0004 72 #define FLAG_BADCHILDPARENT 0x0008 73 #define FLAG_BADMIRRORTID 0x0010 74 75 /* 76 * Hammer information system structures 77 */ 78 struct libhammer_head { 79 int32_t error; 80 int32_t flags; 81 int32_t rsv[2]; 82 }; 83 84 typedef struct libhammer_pfsinfo { 85 struct libhammer_head head; /* Additional error and flags */ 86 87 uint32_t snapcount; /* Snapshot count */ 88 u_int32_t version; /* HAMMER version */ 89 char *mountedon; /* Mount path of the PFS */ 90 int ismaster; /* Is a PFS master */ 91 int pfs_id; /* PFS ID number */ 92 int mirror_flags; /* Misc flags */ 93 char snapshots[64]; /* softlink dir for pruning */ 94 uuid_t unique_uuid; /* unique uuid of this master/slave */ 95 TAILQ_ENTRY(libhammer_pfsinfo) entries; 96 } *libhammer_pfsinfo_t; 97 98 typedef struct libhammer_volinfo { 99 struct libhammer_head head; /* Additional error and flags */ 100 101 char vol_name[TXTLEN]; /* Volume name */ 102 uuid_t vol_fsid; /* Filesystem UUID */ 103 int version; /* HAMMER version */ 104 int nvolumes; /* Number of volumes */ 105 int64_t inodes; /* no. of inodes */ 106 int64_t bigblocks; /* Total big blocks */ 107 int64_t freebigblocks; /* Free big blocks */ 108 int64_t rsvbigblocks; /* Reserved big blocks */ 109 int32_t rsv[8]; 110 TAILQ_HEAD(pfslist, libhammer_pfsinfo) list_pseudo; 111 } *libhammer_volinfo_t; 112 113 struct libhammer_btree_stats { 114 int64_t elements; 115 int64_t iterations; 116 int64_t splits; 117 int64_t inserts; 118 int64_t deletes; 119 int64_t lookups; 120 int64_t searches; 121 }; 122 123 struct libhammer_io_stats { 124 int64_t undo; 125 int64_t dev_writes; 126 int64_t dev_reads; 127 int64_t file_writes; 128 int64_t file_reads; 129 int64_t file_iop_writes; 130 int64_t file_iop_reads; 131 int64_t inode_flushes; 132 int64_t commits; 133 }; 134 135 /* 136 * Function prototypes 137 */ 138 __BEGIN_DECLS 139 libhammer_volinfo_t libhammer_get_volinfo(const char *); 140 void libhammer_free_volinfo(libhammer_volinfo_t); 141 142 int libhammer_stats_redo(int64_t *); 143 int libhammer_stats_undo(int64_t *); 144 int libhammer_stats_commits(int64_t *); 145 int libhammer_stats_inode_flushes(int64_t *); 146 int libhammer_stats_disk_write(int64_t *); 147 int libhammer_stats_disk_read(int64_t *); 148 int libhammer_stats_file_iopsw(int64_t *); 149 int libhammer_stats_file_iopsr(int64_t *); 150 int libhammer_stats_file_write(int64_t *); 151 int libhammer_stats_file_read(int64_t *); 152 int libhammer_stats_record_iterations(int64_t *); 153 int libhammer_stats_root_iterations(int64_t *); 154 int libhammer_stats_btree_iterations(int64_t *); 155 int libhammer_stats_btree_splits(int64_t *); 156 int libhammer_stats_btree_elements(int64_t *); 157 int libhammer_stats_btree_deletes(int64_t *); 158 int libhammer_stats_btree_inserts(int64_t *); 159 int libhammer_stats_btree_lookups(int64_t *); 160 int libhammer_stats_btree_searches(int64_t *); 161 int libhammer_btree_stats(struct libhammer_btree_stats *); 162 int libhammer_io_stats(struct libhammer_io_stats *); 163 164 char *libhammer_find_pfs_mount(int, uuid_t, int); 165 void *_libhammer_malloc(size_t); 166 __END_DECLS 167 168 static __inline libhammer_pfsinfo_t 169 libhammer_get_next_pfs(libhammer_pfsinfo_t pfsinfo) 170 { 171 return TAILQ_NEXT(pfsinfo, entries); 172 } 173 174 static __inline libhammer_pfsinfo_t 175 libhammer_get_prev_pfs(libhammer_pfsinfo_t pfsinfo) 176 { 177 return TAILQ_PREV(pfsinfo, pfslist, entries); 178 } 179 180 static __inline libhammer_pfsinfo_t 181 libhammer_get_first_pfs(libhammer_volinfo_t volinfo) 182 { 183 return TAILQ_FIRST(&volinfo->list_pseudo); 184 } 185 186 static __inline libhammer_pfsinfo_t 187 libhammer_get_last_pfs(libhammer_volinfo_t volinfo) 188 { 189 return TAILQ_LAST(&volinfo->list_pseudo, pfslist); 190 } 191 192 #endif 193