dump.h revision 1.52
1 /* $NetBSD: dump.h,v 1.52 2015/07/28 05:09:34 dholland Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. 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 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)dump.h 8.2 (Berkeley) 4/28/95 32 */ 33 34 #include <machine/bswap.h> 35 #ifdef DUMP_LFS 36 #include <ufs/lfs/lfs.h> 37 #include <ufs/lfs/lfs_accessors.h> 38 #endif 39 #include <ufs/ufs/dinode.h> 40 #include <protocols/dumprestore.h> 41 42 union dinode { 43 struct ufs1_dinode dp1; 44 struct ufs2_dinode dp2; 45 #ifdef DUMP_LFS 46 struct ulfs1_dinode dlp1; 47 struct ulfs2_dinode dlp2; 48 #endif 49 }; 50 #define DIP(dp, field) \ 51 (is_ufs2 ? (dp)->dp2.di_##field : (dp)->dp1.di_##field) 52 53 #define DIP_SET(dp, field, val) do { \ 54 if (is_ufs2) \ 55 (dp)->dp2.di_##field = (val); \ 56 else \ 57 (dp)->dp1.di_##field = (val); \ 58 } while (0) 59 60 /* 61 * Filestore-independent UFS data, so code can be more easily shared 62 * between ffs, lfs, and maybe ext2fs and others as well. 63 */ 64 struct ufsi { 65 int64_t ufs_dsize; /* file system size, in sectors */ 66 int32_t ufs_bsize; /* block size */ 67 int32_t ufs_bshift; /* log2(ufs_bsize) */ 68 int32_t ufs_fsize; /* fragment size */ 69 int32_t ufs_frag; /* block size / frag size */ 70 int32_t ufs_fsatoda; /* disk address conversion constant */ 71 int32_t ufs_nindir; /* disk addresses per indirect block */ 72 int32_t ufs_inopb; /* inodes per block */ 73 int32_t ufs_maxsymlinklen; /* max symlink length */ 74 int32_t ufs_bmask; /* block mask */ 75 int32_t ufs_fmask; /* frag mask */ 76 int64_t ufs_qbmask; /* ~ufs_bmask */ 77 int64_t ufs_qfmask; /* ~ufs_fmask */ 78 }; 79 #define fsatoda(u,a) ((a) << (u)->ufs_fsatoda) 80 #define ufs_fragroundup(u,size) /* calculates roundup(size, ufs_fsize) */ \ 81 (((size) + (u)->ufs_qfmask) & (u)->ufs_fmask) 82 #define ufs_blkoff(u,loc) /* calculates (loc % u->ufs_bsize) */ \ 83 ((loc) & (u)->ufs_qbmask) 84 #define ufs_dblksize(u,d,b) \ 85 ((((b) >= UFS_NDADDR || DIP((d), size) >= ((b)+1) << (u)->ufs_bshift \ 86 ? (u)->ufs_bsize \ 87 : (ufs_fragroundup((u), ufs_blkoff(u, DIP((d), size))))))) 88 struct ufsi *ufsib; 89 90 /* 91 * Dump maps used to describe what is to be dumped. 92 */ 93 int mapsize; /* size of the state maps */ 94 char *usedinomap; /* map of allocated inodes */ 95 char *dumpdirmap; /* map of directories to be dumped */ 96 char *dumpinomap; /* map of files to be dumped */ 97 /* 98 * Map manipulation macros. 99 */ 100 #define SETINO(ino, map) \ 101 map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY) 102 #define CLRINO(ino, map) \ 103 map[(u_int)((ino) - 1) / NBBY] &= ~(1 << ((u_int)((ino) - 1) % NBBY)) 104 #define TSTINO(ino, map) \ 105 (map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY))) 106 107 /* 108 * All calculations done in 0.1" units! 109 */ 110 char *disk; /* name of the disk file */ 111 char *disk_dev; /* name of the raw device we are dumping */ 112 const char *tape; /* name of the tape file */ 113 const char *dumpdates; /* name of the file containing dump date information*/ 114 const char *temp; /* name of the file for doing rewrite of dumpdates */ 115 char lastlevel; /* dump level of previous dump */ 116 char level; /* dump level of this dump */ 117 int uflag; /* update flag */ 118 int eflag; /* eject flag */ 119 int lflag; /* autoload flag */ 120 int diskfd; /* disk file descriptor */ 121 int tapefd; /* tape file descriptor */ 122 int pipeout; /* true => output to standard output */ 123 int trueinc; /* true => "true incremental", i.e use last 9 as ref */ 124 ino_t curino; /* current inumber; used globally */ 125 int newtape; /* new tape flag */ 126 u_int64_t tapesize; /* estimated tape size, blocks */ 127 long tsize; /* tape size in 0.1" units */ 128 long asize; /* number of 0.1" units written on current tape */ 129 int etapes; /* estimated number of tapes */ 130 int nonodump; /* if set, do not honor UF_NODUMP user flags */ 131 int unlimited; /* if set, write to end of medium */ 132 133 extern int density; /* density in 0.1" units */ 134 extern int notify; /* notify operator flag */ 135 extern int timestamp; /* timestamp messages */ 136 extern int blockswritten; /* number of blocks written on current tape */ 137 extern int tapeno; /* current tape number */ 138 extern int is_ufs2; 139 140 time_t tstart_writing; /* when started writing the first tape block */ 141 time_t tstart_volume; /* when started writing the current volume */ 142 int xferrate; /* averaged transfer rate of all volumes */ 143 char sblock_buf[MAXBSIZE]; /* buffer to hold the superblock */ 144 extern long dev_bsize; /* block size of underlying disk device */ 145 int dev_bshift; /* log2(dev_bsize) */ 146 int tp_bshift; /* log2(TP_BSIZE) */ 147 int needswap; /* file system in swapped byte order */ 148 149 150 /* some inline functions to help the byte-swapping mess */ 151 static inline u_int16_t iswap16(u_int16_t); 152 static inline u_int32_t iswap32(u_int32_t); 153 static inline u_int64_t iswap64(u_int64_t); 154 155 static inline u_int16_t iswap16(u_int16_t x) 156 { 157 if (needswap) 158 return bswap16(x); 159 else 160 return x; 161 } 162 163 static inline u_int32_t iswap32(u_int32_t x) 164 { 165 if (needswap) 166 return bswap32(x); 167 else 168 return x; 169 } 170 171 static inline u_int64_t iswap64(u_int64_t x) 172 { 173 if (needswap) 174 return bswap64(x); 175 else 176 return x; 177 } 178 179 /* filestore-specific hooks */ 180 int fs_read_sblock(char *); 181 struct ufsi *fs_parametrize(void); 182 ino_t fs_maxino(void); 183 void fs_mapinodes(ino_t, u_int64_t *, int *); 184 185 /* operator interface functions */ 186 void broadcast(const char *); 187 void lastdump(char); 188 void msg(const char *fmt, ...) __printflike(1, 2); 189 void msgtail(const char *fmt, ...) __printflike(1, 2); 190 int query(const char *); 191 void quit(const char *fmt, ...) __printflike(1, 2); 192 time_t do_stats(void); 193 void statussig(int); 194 void timeest(void); 195 time_t unctime(const char *); 196 197 /* mapping routines */ 198 union dinode; 199 int64_t blockest(union dinode *); 200 void mapfileino(ino_t, u_int64_t *, int *); 201 int mapfiles(ino_t, u_int64_t *, char *, char * const *); 202 int mapdirs(ino_t, u_int64_t *); 203 204 /* file dumping routines */ 205 void blksout32(int32_t *, int, ino_t); 206 void blksout64(int64_t *, int, ino_t); 207 void dumpino(union dinode *, ino_t); 208 #ifndef RRESTORE 209 void dumpmap(char *, int, ino_t); 210 #endif 211 void writeheader(ino_t); 212 213 /* data block caching */ 214 void bread(daddr_t, char *, int); 215 void rawread(daddr_t, char *, int); 216 void initcache(int, int); 217 void printcachestats(void); 218 219 /* tape writing routines */ 220 int alloctape(void); 221 void close_rewind(void); 222 void dumpblock(daddr_t, int); 223 void startnewtape(int); 224 void trewind(int); 225 void writerec(const char *, int); 226 227 void Exit(int); 228 void dumpabort(int); 229 void getfstab(void); 230 231 char *rawname(char *); 232 union dinode *getino(ino_t); 233 234 void *xcalloc(size_t, size_t); 235 void *xmalloc(size_t); 236 char *xstrdup(const char *); 237 238 /* LFS snapshot hooks */ 239 #ifdef DUMP_LFS 240 int lfs_wrap_stop(char *); 241 void lfs_wrap_go(void); 242 #endif 243 244 /* rdump routines */ 245 #if defined(RDUMP) || defined(RRESTORE) 246 void rmtclose(void); 247 int rmthost(const char *); 248 int rmtopen(const char *, int, int); 249 int rmtwrite(const char *, int); 250 int rmtioctl(int, int); 251 #endif /* RDUMP || RRESTORE */ 252 253 void interrupt(int); /* in case operator bangs on console */ 254 255 /* 256 * Exit status codes 257 */ 258 #define X_FINOK 0 /* normal exit */ 259 #define X_STARTUP 1 /* startup error */ 260 #define X_REWRITE 2 /* restart writing from the check point */ 261 #define X_ABORT 3 /* abort dump; don't attempt checkpointing */ 262 263 #define OPGRENT "operator" /* group entry to notify */ 264 #define DIALUP "ttyd" /* prefix for dialups */ 265 266 struct fstab *fstabsearch(const char *); /* search fs_file and fs_spec */ 267 struct statvfs *mntinfosearch(const char *key); 268 269 #ifndef NAME_MAX 270 #define NAME_MAX 255 271 #endif 272 273 /* 274 * The contents of the file _PATH_DUMPDATES is maintained both on 275 * a linked list, and then (eventually) arrayified. 276 */ 277 struct dumpdates { 278 char dd_name[NAME_MAX+3]; 279 char dd_level; 280 time_t dd_ddate; 281 }; 282 283 extern int nddates; /* number of records (might be zero) */ 284 extern struct dumpdates **ddatev; /* the arrayfied version */ 285 286 void initdumptimes(void); 287 void getdumptime(void); 288 void putdumptime(void); 289 #define ITITERATE(i, ddp) \ 290 if (ddatev != NULL) \ 291 for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i]) 292 293 void sig(int signo); 294 295 #ifndef _PATH_FSTAB 296 #define _PATH_FSTAB "/etc/fstab" 297 #endif 298
Indexes created Wed Sep 24 05:09:52 GMT 2025