dump.h revision 1.36
1 /* $NetBSD: dump.h,v 1.36 2003/04/02 10:39:24 fvdl 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)dump.h 8.2 (Berkeley) 4/28/95 36 */ 37 38 #include <machine/bswap.h> 39 40 union dinode { 41 struct ufs1_dinode dp1; 42 struct ufs2_dinode dp2; 43 }; 44 #define DIP(dp, field) \ 45 (is_ufs2 ? (dp)->dp2.di_##field : (dp)->dp1.di_##field) 46 47 /* 48 * Filestore-independent UFS data, so code can be more easily shared 49 * between ffs, lfs, and maybe ext2fs and others as well. 50 */ 51 struct ufsi { 52 int64_t ufs_dsize; /* file system size, in sectors */ 53 int32_t ufs_bsize; /* block size */ 54 int32_t ufs_bshift; /* log2(ufs_bsize) */ 55 int32_t ufs_fsize; /* fragment size */ 56 int32_t ufs_frag; /* block size / frag size */ 57 int32_t ufs_fsatoda; /* disk address conversion constant */ 58 int32_t ufs_nindir; /* disk addresses per indirect block */ 59 int32_t ufs_inopb; /* inodes per block */ 60 int32_t ufs_maxsymlinklen; /* max symlink length */ 61 int32_t ufs_bmask; /* block mask */ 62 int32_t ufs_fmask; /* frag mask */ 63 int64_t ufs_qbmask; /* ~ufs_bmask */ 64 int64_t ufs_qfmask; /* ~ufs_fmask */ 65 }; 66 #define fsatoda(u,a) ((a) << (u)->ufs_fsatoda) 67 #define ufs_fragroundup(u,size) /* calculates roundup(size, ufs_fsize) */ \ 68 (((size) + (u)->ufs_qfmask) & (u)->ufs_fmask) 69 #define ufs_blkoff(u,loc) /* calculates (loc % u->ufs_bsize) */ \ 70 ((loc) & (u)->ufs_qbmask) 71 #define ufs_dblksize(u,d,b) \ 72 ((((b) >= NDADDR || DIP((d), size) >= ((b)+1) << (u)->ufs_bshift \ 73 ? (u)->ufs_bsize \ 74 : (ufs_fragroundup((u), ufs_blkoff(u, DIP((d), size))))))) 75 struct ufsi *ufsib; 76 77 /* 78 * Dump maps used to describe what is to be dumped. 79 */ 80 int mapsize; /* size of the state maps */ 81 char *usedinomap; /* map of allocated inodes */ 82 char *dumpdirmap; /* map of directories to be dumped */ 83 char *dumpinomap; /* map of files to be dumped */ 84 /* 85 * Map manipulation macros. 86 */ 87 #define SETINO(ino, map) \ 88 map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY) 89 #define CLRINO(ino, map) \ 90 map[(u_int)((ino) - 1) / NBBY] &= ~(1 << ((u_int)((ino) - 1) % NBBY)) 91 #define TSTINO(ino, map) \ 92 (map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY))) 93 94 /* 95 * All calculations done in 0.1" units! 96 */ 97 char *disk; /* name of the disk file */ 98 char *tape; /* name of the tape file */ 99 char *dumpdates; /* name of the file containing dump date information*/ 100 char *temp; /* name of the file for doing rewrite of dumpdates */ 101 char lastlevel; /* dump level of previous dump */ 102 char level; /* dump level of this dump */ 103 int uflag; /* update flag */ 104 int eflag; /* eject flag */ 105 int lflag; /* autoload flag */ 106 int diskfd; /* disk file descriptor */ 107 int tapefd; /* tape file descriptor */ 108 int pipeout; /* true => output to standard output */ 109 ino_t curino; /* current inumber; used globally */ 110 int newtape; /* new tape flag */ 111 u_int64_t tapesize; /* estimated tape size, blocks */ 112 long tsize; /* tape size in 0.1" units */ 113 long asize; /* number of 0.1" units written on current tape */ 114 int etapes; /* estimated number of tapes */ 115 int nonodump; /* if set, do not honor UF_NODUMP user flags */ 116 int unlimited; /* if set, write to end of medium */ 117 118 extern int density; /* density in 0.1" units */ 119 extern int notify; /* notify operator flag */ 120 extern int timestamp; /* timestamp messages */ 121 extern int blockswritten; /* number of blocks written on current tape */ 122 extern int tapeno; /* current tape number */ 123 extern int is_ufs2; 124 125 time_t tstart_writing; /* when started writing the first tape block */ 126 int xferrate; /* averaged transfer rate of all volumes */ 127 char sblock_buf[MAXBSIZE]; /* buffer to hold the superblock */ 128 extern long dev_bsize; /* block size of underlying disk device */ 129 int dev_bshift; /* log2(dev_bsize) */ 130 int tp_bshift; /* log2(TP_BSIZE) */ 131 int needswap; /* file system in swapped byte order */ 132 /* some inline functs to help the byte-swapping mess */ 133 static __inline u_int16_t iswap16(u_int16_t); 134 static __inline u_int32_t iswap32(u_int32_t); 135 static __inline u_int64_t iswap64(u_int64_t); 136 137 static __inline u_int16_t iswap16(u_int16_t x) 138 { 139 if (needswap) 140 return bswap16(x); 141 else 142 return x; 143 } 144 145 static __inline u_int32_t iswap32(u_int32_t x) 146 { 147 if (needswap) 148 return bswap32(x); 149 else 150 return x; 151 } 152 153 static __inline u_int64_t iswap64(u_int64_t x) 154 { 155 if (needswap) 156 return bswap64(x); 157 else 158 return x; 159 } 160 161 /* filestore-specific hooks */ 162 int fs_read_sblock(char *); 163 struct ufsi *fs_parametrize(void); 164 ino_t fs_maxino(void); 165 void fs_mapinodes(ino_t, u_int64_t *, int *); 166 167 /* operator interface functions */ 168 void broadcast(char *); 169 void lastdump(char); 170 void msg(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 171 void msgtail(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 172 int query(char *); 173 void quit(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 174 time_t do_stats(void); 175 void statussig(int); 176 void timeest(void); 177 time_t unctime(char *); 178 179 /* mapping routines */ 180 union dinode; 181 int64_t blockest(union dinode *); 182 void mapfileino(ino_t, u_int64_t *, int *); 183 int mapfiles(ino_t, u_int64_t *, char *, char * const *); 184 int mapdirs(ino_t, u_int64_t *); 185 186 /* file dumping routines */ 187 void blksout32(int32_t *, int, ino_t); 188 void blksout64(int64_t *, int, ino_t); 189 void dumpino(union dinode *, ino_t); 190 void dumpmap(char *, int, ino_t); 191 void writeheader(ino_t); 192 193 /* data block caching */ 194 void bread(daddr_t, char *, int); 195 void rawread(daddr_t, char *, int); 196 void initcache(int, int); 197 void printcachestats(void); 198 199 /* tape writing routines */ 200 int alloctape(void); 201 void close_rewind(void); 202 void dumpblock(daddr_t, int); 203 void startnewtape(int); 204 void trewind(int); 205 void writerec(char *, int); 206 207 void Exit(int); 208 void dumpabort(int); 209 void getfstab(void); 210 211 char *rawname(char *); 212 union dinode *getino(ino_t); 213 214 void *xcalloc(size_t, size_t); 215 void *xmalloc(size_t); 216 char *xstrdup(const char *); 217 218 /* rdump routines */ 219 #if defined(RDUMP) || defined(RRESTORE) 220 void rmtclose(void); 221 int rmthost(char *); 222 int rmtopen(char *, int, int); 223 int rmtwrite(char *, int); 224 int rmtioctl(int, int); 225 #endif /* RDUMP || RRESTORE */ 226 227 void interrupt(int); /* in case operator bangs on console */ 228 229 /* 230 * Exit status codes 231 */ 232 #define X_FINOK 0 /* normal exit */ 233 #define X_STARTUP 1 /* startup error */ 234 #define X_REWRITE 2 /* restart writing from the check point */ 235 #define X_ABORT 3 /* abort dump; don't attempt checkpointing */ 236 237 #define OPGRENT "operator" /* group entry to notify */ 238 #define DIALUP "ttyd" /* prefix for dialups */ 239 240 struct fstab *fstabsearch(const char *); /* search fs_file and fs_spec */ 241 struct statfs *mntinfosearch(const char *key); 242 243 #ifndef NAME_MAX 244 #define NAME_MAX 255 245 #endif 246 247 /* 248 * The contents of the file _PATH_DUMPDATES is maintained both on 249 * a linked list, and then (eventually) arrayified. 250 */ 251 struct dumpdates { 252 char dd_name[NAME_MAX+3]; 253 char dd_level; 254 time_t dd_ddate; 255 }; 256 257 extern int nddates; /* number of records (might be zero) */ 258 extern struct dumpdates **ddatev; /* the arrayfied version */ 259 260 void initdumptimes(void); 261 void getdumptime(void); 262 void putdumptime(void); 263 #define ITITERATE(i, ddp) \ 264 if (ddatev != NULL) \ 265 for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i]) 266 267 void sig(int signo); 268 269 /* 270 * Compatibility with old systems. 271 */ 272 #ifdef COMPAT 273 #include <sys/file.h> 274 #define strchr(a,b) index(a,b) 275 #define strrchr(a,b) rindex(a,b) 276 extern char *strdup(), *ctime(); 277 extern int read(), write(); 278 extern int errno; 279 #endif 280 281 #ifndef _PATH_FSTAB 282 #define _PATH_FSTAB "/etc/fstab" 283 #endif 284
Indexes created Fri Sep 26 20:09:58 GMT 2025