dump.h revision 1.37
1 /* $NetBSD: dump.h,v 1.37 2003/08/07 10:04:14 agc 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 36 union dinode { 37 struct ufs1_dinode dp1; 38 struct ufs2_dinode dp2; 39 }; 40 #define DIP(dp, field) \ 41 (is_ufs2 ? (dp)->dp2.di_##field : (dp)->dp1.di_##field) 42 43 /* 44 * Filestore-independent UFS data, so code can be more easily shared 45 * between ffs, lfs, and maybe ext2fs and others as well. 46 */ 47 struct ufsi { 48 int64_t ufs_dsize; /* file system size, in sectors */ 49 int32_t ufs_bsize; /* block size */ 50 int32_t ufs_bshift; /* log2(ufs_bsize) */ 51 int32_t ufs_fsize; /* fragment size */ 52 int32_t ufs_frag; /* block size / frag size */ 53 int32_t ufs_fsatoda; /* disk address conversion constant */ 54 int32_t ufs_nindir; /* disk addresses per indirect block */ 55 int32_t ufs_inopb; /* inodes per block */ 56 int32_t ufs_maxsymlinklen; /* max symlink length */ 57 int32_t ufs_bmask; /* block mask */ 58 int32_t ufs_fmask; /* frag mask */ 59 int64_t ufs_qbmask; /* ~ufs_bmask */ 60 int64_t ufs_qfmask; /* ~ufs_fmask */ 61 }; 62 #define fsatoda(u,a) ((a) << (u)->ufs_fsatoda) 63 #define ufs_fragroundup(u,size) /* calculates roundup(size, ufs_fsize) */ \ 64 (((size) + (u)->ufs_qfmask) & (u)->ufs_fmask) 65 #define ufs_blkoff(u,loc) /* calculates (loc % u->ufs_bsize) */ \ 66 ((loc) & (u)->ufs_qbmask) 67 #define ufs_dblksize(u,d,b) \ 68 ((((b) >= NDADDR || DIP((d), size) >= ((b)+1) << (u)->ufs_bshift \ 69 ? (u)->ufs_bsize \ 70 : (ufs_fragroundup((u), ufs_blkoff(u, DIP((d), size))))))) 71 struct ufsi *ufsib; 72 73 /* 74 * Dump maps used to describe what is to be dumped. 75 */ 76 int mapsize; /* size of the state maps */ 77 char *usedinomap; /* map of allocated inodes */ 78 char *dumpdirmap; /* map of directories to be dumped */ 79 char *dumpinomap; /* map of files to be dumped */ 80 /* 81 * Map manipulation macros. 82 */ 83 #define SETINO(ino, map) \ 84 map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY) 85 #define CLRINO(ino, map) \ 86 map[(u_int)((ino) - 1) / NBBY] &= ~(1 << ((u_int)((ino) - 1) % NBBY)) 87 #define TSTINO(ino, map) \ 88 (map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY))) 89 90 /* 91 * All calculations done in 0.1" units! 92 */ 93 char *disk; /* name of the disk file */ 94 char *tape; /* name of the tape file */ 95 char *dumpdates; /* name of the file containing dump date information*/ 96 char *temp; /* name of the file for doing rewrite of dumpdates */ 97 char lastlevel; /* dump level of previous dump */ 98 char level; /* dump level of this dump */ 99 int uflag; /* update flag */ 100 int eflag; /* eject flag */ 101 int lflag; /* autoload flag */ 102 int diskfd; /* disk file descriptor */ 103 int tapefd; /* tape file descriptor */ 104 int pipeout; /* true => output to standard output */ 105 ino_t curino; /* current inumber; used globally */ 106 int newtape; /* new tape flag */ 107 u_int64_t tapesize; /* estimated tape size, blocks */ 108 long tsize; /* tape size in 0.1" units */ 109 long asize; /* number of 0.1" units written on current tape */ 110 int etapes; /* estimated number of tapes */ 111 int nonodump; /* if set, do not honor UF_NODUMP user flags */ 112 int unlimited; /* if set, write to end of medium */ 113 114 extern int density; /* density in 0.1" units */ 115 extern int notify; /* notify operator flag */ 116 extern int timestamp; /* timestamp messages */ 117 extern int blockswritten; /* number of blocks written on current tape */ 118 extern int tapeno; /* current tape number */ 119 extern int is_ufs2; 120 121 time_t tstart_writing; /* when started writing the first tape block */ 122 int xferrate; /* averaged transfer rate of all volumes */ 123 char sblock_buf[MAXBSIZE]; /* buffer to hold the superblock */ 124 extern long dev_bsize; /* block size of underlying disk device */ 125 int dev_bshift; /* log2(dev_bsize) */ 126 int tp_bshift; /* log2(TP_BSIZE) */ 127 int needswap; /* file system in swapped byte order */ 128 /* some inline functs to help the byte-swapping mess */ 129 static __inline u_int16_t iswap16(u_int16_t); 130 static __inline u_int32_t iswap32(u_int32_t); 131 static __inline u_int64_t iswap64(u_int64_t); 132 133 static __inline u_int16_t iswap16(u_int16_t x) 134 { 135 if (needswap) 136 return bswap16(x); 137 else 138 return x; 139 } 140 141 static __inline u_int32_t iswap32(u_int32_t x) 142 { 143 if (needswap) 144 return bswap32(x); 145 else 146 return x; 147 } 148 149 static __inline u_int64_t iswap64(u_int64_t x) 150 { 151 if (needswap) 152 return bswap64(x); 153 else 154 return x; 155 } 156 157 /* filestore-specific hooks */ 158 int fs_read_sblock(char *); 159 struct ufsi *fs_parametrize(void); 160 ino_t fs_maxino(void); 161 void fs_mapinodes(ino_t, u_int64_t *, int *); 162 163 /* operator interface functions */ 164 void broadcast(char *); 165 void lastdump(char); 166 void msg(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 167 void msgtail(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 168 int query(char *); 169 void quit(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 170 time_t do_stats(void); 171 void statussig(int); 172 void timeest(void); 173 time_t unctime(char *); 174 175 /* mapping routines */ 176 union dinode; 177 int64_t blockest(union dinode *); 178 void mapfileino(ino_t, u_int64_t *, int *); 179 int mapfiles(ino_t, u_int64_t *, char *, char * const *); 180 int mapdirs(ino_t, u_int64_t *); 181 182 /* file dumping routines */ 183 void blksout32(int32_t *, int, ino_t); 184 void blksout64(int64_t *, int, ino_t); 185 void dumpino(union dinode *, ino_t); 186 void dumpmap(char *, int, ino_t); 187 void writeheader(ino_t); 188 189 /* data block caching */ 190 void bread(daddr_t, char *, int); 191 void rawread(daddr_t, char *, int); 192 void initcache(int, int); 193 void printcachestats(void); 194 195 /* tape writing routines */ 196 int alloctape(void); 197 void close_rewind(void); 198 void dumpblock(daddr_t, int); 199 void startnewtape(int); 200 void trewind(int); 201 void writerec(char *, int); 202 203 void Exit(int); 204 void dumpabort(int); 205 void getfstab(void); 206 207 char *rawname(char *); 208 union dinode *getino(ino_t); 209 210 void *xcalloc(size_t, size_t); 211 void *xmalloc(size_t); 212 char *xstrdup(const char *); 213 214 /* rdump routines */ 215 #if defined(RDUMP) || defined(RRESTORE) 216 void rmtclose(void); 217 int rmthost(char *); 218 int rmtopen(char *, int, int); 219 int rmtwrite(char *, int); 220 int rmtioctl(int, int); 221 #endif /* RDUMP || RRESTORE */ 222 223 void interrupt(int); /* in case operator bangs on console */ 224 225 /* 226 * Exit status codes 227 */ 228 #define X_FINOK 0 /* normal exit */ 229 #define X_STARTUP 1 /* startup error */ 230 #define X_REWRITE 2 /* restart writing from the check point */ 231 #define X_ABORT 3 /* abort dump; don't attempt checkpointing */ 232 233 #define OPGRENT "operator" /* group entry to notify */ 234 #define DIALUP "ttyd" /* prefix for dialups */ 235 236 struct fstab *fstabsearch(const char *); /* search fs_file and fs_spec */ 237 struct statfs *mntinfosearch(const char *key); 238 239 #ifndef NAME_MAX 240 #define NAME_MAX 255 241 #endif 242 243 /* 244 * The contents of the file _PATH_DUMPDATES is maintained both on 245 * a linked list, and then (eventually) arrayified. 246 */ 247 struct dumpdates { 248 char dd_name[NAME_MAX+3]; 249 char dd_level; 250 time_t dd_ddate; 251 }; 252 253 extern int nddates; /* number of records (might be zero) */ 254 extern struct dumpdates **ddatev; /* the arrayfied version */ 255 256 void initdumptimes(void); 257 void getdumptime(void); 258 void putdumptime(void); 259 #define ITITERATE(i, ddp) \ 260 if (ddatev != NULL) \ 261 for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i]) 262 263 void sig(int signo); 264 265 /* 266 * Compatibility with old systems. 267 */ 268 #ifdef COMPAT 269 #include <sys/file.h> 270 #define strchr(a,b) index(a,b) 271 #define strrchr(a,b) rindex(a,b) 272 extern char *strdup(), *ctime(); 273 extern int read(), write(); 274 extern int errno; 275 #endif 276 277 #ifndef _PATH_FSTAB 278 #define _PATH_FSTAB "/etc/fstab" 279 #endif 280
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