dump.h revision 1.23
1 /* $NetBSD: dump.h,v 1.23 2001/02/04 21:37:29 christos 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 #define MAXINOPB (MAXBSIZE / sizeof(struct dinode)) 41 #define MAXNINDIR (MAXBSIZE / sizeof(daddr_t)) 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; /* filesystem 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 || (d)->di_size >= ((b)+1) << (u)->ufs_bshift \ 69 ? (u)->ufs_bsize \ 70 : (ufs_fragroundup((u), ufs_blkoff(u, (d)->di_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 diskfd; /* disk file descriptor */ 101 int tapefd; /* tape file descriptor */ 102 int pipeout; /* true => output to standard output */ 103 ino_t curino; /* current inumber; used globally */ 104 int newtape; /* new tape flag */ 105 long tapesize; /* estimated tape size, blocks */ 106 long tsize; /* tape size in 0.1" units */ 107 long asize; /* number of 0.1" units written on current tape */ 108 int etapes; /* estimated number of tapes */ 109 int nonodump; /* if set, do not honor UF_NODUMP user flags */ 110 111 extern int density; /* density in 0.1" units */ 112 extern int notify; /* notify operator flag */ 113 extern int blockswritten; /* number of blocks written on current tape */ 114 extern int tapeno; /* current tape number */ 115 116 time_t tstart_writing; /* when started writing the first tape block */ 117 int xferrate; /* averaged transfer rate of all volumes */ 118 char sblock_buf[MAXBSIZE]; /* buffer to hold the superblock */ 119 extern long dev_bsize; /* block size of underlying disk device */ 120 int dev_bshift; /* log2(dev_bsize) */ 121 int tp_bshift; /* log2(TP_BSIZE) */ 122 int needswap; /* file system in swapped byte order */ 123 /* some inline functs to help the byte-swapping mess */ 124 static __inline u_int16_t iswap16 __P((u_int16_t)); 125 static __inline u_int32_t iswap32 __P((u_int32_t)); 126 static __inline u_int64_t iswap64 __P((u_int64_t)); 127 128 static __inline u_int16_t iswap16(x) 129 u_int16_t x; 130 { 131 if (needswap) 132 return bswap16(x); 133 else return x; 134 } 135 136 static __inline u_int32_t iswap32(x) 137 u_int32_t x; 138 { 139 if (needswap) 140 return bswap32(x); 141 else return x; 142 } 143 144 static __inline u_int64_t iswap64(x) 145 u_int64_t x; 146 { 147 if (needswap) 148 return bswap64(x); 149 else return x; 150 } 151 152 #ifndef __P 153 #include <sys/cdefs.h> 154 #endif 155 156 /* filestore-specific hooks */ 157 int fs_read_sblock __P((char *)); 158 struct ufsi *fs_parametrize __P((void)); 159 ino_t fs_maxino __P((void)); 160 161 /* operator interface functions */ 162 void broadcast __P((char *message)); 163 void lastdump __P((int arg)); /* int should be char */ 164 void msg __P((const char *fmt, ...)) __attribute__((__format__(__printf__,1,2))); 165 void msgtail __P((const char *fmt, ...)) __attribute__((__format__(__printf__,1,2))); 166 int query __P((char *question)); 167 void quit __P((const char *fmt, ...)) __attribute__((__format__(__printf__,1,2))); 168 void set_operators __P((void)); 169 time_t do_stats __P((void)); 170 void statussig __P((int)); 171 void timeest __P((void)); 172 time_t unctime __P((char *str)); 173 174 /* mapping routines */ 175 struct dinode; 176 long blockest __P((struct dinode *dp)); 177 void mapfileino __P((ino_t, long *, int *)); 178 int mapfiles __P((ino_t maxino, long *tapesize, char *disk, 179 char * const *dirv)); 180 int mapdirs __P((ino_t maxino, long *tapesize)); 181 182 /* file dumping routines */ 183 void blksout __P((daddr_t *blkp, int frags, ino_t ino)); 184 void dumpino __P((struct dinode *dp, ino_t ino)); 185 void dumpmap __P((char *map, int type, ino_t ino)); 186 void writeheader __P((ino_t ino)); 187 188 /* data block caching */ 189 void bread __P((daddr_t blkno, char *buf, int size)); 190 void rawread __P((daddr_t, char *, int)); 191 void initcache __P((int, int)); 192 void printcachestats __P((void)); 193 194 /* tape writing routines */ 195 int alloctape __P((void)); 196 void close_rewind __P((void)); 197 void dumpblock __P((daddr_t blkno, int size)); 198 void startnewtape __P((int top)); 199 void trewind __P((void)); 200 void writerec __P((char *dp, int isspcl)); 201 202 void Exit __P((int status)); 203 void dumpabort __P((int signo)); 204 void getfstab __P((void)); 205 206 char *rawname __P((char *cp)); 207 struct dinode *getino __P((ino_t inum)); 208 209 /* rdump routines */ 210 #if defined(RDUMP) || defined(RRESTORE) 211 void rmtclose __P((void)); 212 int rmthost __P((char *host)); 213 int rmtopen __P((char *tape, int mode)); 214 int rmtwrite __P((char *buf, int count)); 215 #endif /* RDUMP || RRESTORE */ 216 217 void interrupt __P((int signo)); /* in case operator bangs on console */ 218 219 /* 220 * Exit status codes 221 */ 222 #define X_FINOK 0 /* normal exit */ 223 #define X_REWRITE 2 /* restart writing from the check point */ 224 #define X_ABORT 3 /* abort dump; don't attempt checkpointing */ 225 226 #define OPGRENT "operator" /* group entry to notify */ 227 #define DIALUP "ttyd" /* prefix for dialups */ 228 229 struct fstab *fstabsearch __P((char *key)); /* search fs_file and fs_spec */ 230 231 #ifndef NAME_MAX 232 #define NAME_MAX 255 233 #endif 234 235 /* 236 * The contents of the file _PATH_DUMPDATES is maintained both on 237 * a linked list, and then (eventually) arrayified. 238 */ 239 struct dumpdates { 240 char dd_name[NAME_MAX+3]; 241 char dd_level; 242 time_t dd_ddate; 243 }; 244 struct dumptime { 245 struct dumpdates dt_value; 246 struct dumptime *dt_next; 247 }; 248 249 extern struct dumptime *dthead; /* head of the list version */ 250 extern int nddates; /* number of records (might be zero) */ 251 extern int ddates_in; /* we have read the increment file */ 252 extern struct dumpdates **ddatev; /* the arrayfied version */ 253 254 void initdumptimes __P((void)); 255 void getdumptime __P((void)); 256 void putdumptime __P((void)); 257 #define ITITERATE(i, ddp) \ 258 for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i]) 259 260 void sig __P((int signo)); 261 262 /* 263 * Compatibility with old systems. 264 */ 265 #ifdef COMPAT 266 #include <sys/file.h> 267 #define strchr(a,b) index(a,b) 268 #define strrchr(a,b) rindex(a,b) 269 extern char *strdup(), *ctime(); 270 extern int read(), write(); 271 extern int errno; 272 #endif 273 274 #ifndef _PATH_UTMP 275 #define _PATH_UTMP "/etc/utmp" 276 #endif 277 #ifndef _PATH_FSTAB 278 #define _PATH_FSTAB "/etc/fstab" 279 #endif 280 281 #ifdef sunos 282 extern char *calloc(); 283 extern char *malloc(); 284 extern long atol(); 285 extern char *strcpy(); 286 extern char *strncpy(); 287 extern char *strcat(); 288 extern time_t time(); 289 extern void endgrent(); 290 extern void exit(); 291 extern off_t lseek(); 292 extern const char *strerror(); 293 #endif 294
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