dump.h revision 1.20
1 /* $NetBSD: dump.h,v 1.20 2000/10/10 20:24:50 is 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 int density; /* density in 0.1" units */ 106 long tapesize; /* estimated tape size, blocks */ 107 long tsize; /* tape size in 0.1" units */ 108 long asize; /* number of 0.1" units written on current tape */ 109 int etapes; /* estimated number of tapes */ 110 int nonodump; /* if set, do not honor UF_NODUMP user flags */ 111 112 int notify; /* notify operator flag */ 113 int blockswritten; /* number of blocks written on current tape */ 114 int tapeno; /* current tape number */ 115 time_t tstart_writing; /* when started writing the first tape block */ 116 int xferrate; /* averaged transfer rate of all volumes */ 117 char sblock_buf[MAXBSIZE]; /* buffer to hold the superblock */ 118 long dev_bsize; /* block size of underlying disk device */ 119 int dev_bshift; /* log2(dev_bsize) */ 120 int tp_bshift; /* log2(TP_BSIZE) */ 121 int needswap; /* file system in swapped byte order */ 122 /* some inline functs to help the byte-swapping mess */ 123 static __inline u_int16_t iswap16 __P((u_int16_t)); 124 static __inline u_int32_t iswap32 __P((u_int32_t)); 125 static __inline u_int64_t iswap64 __P((u_int64_t)); 126 127 static __inline u_int16_t iswap16(x) 128 u_int16_t x; 129 { 130 if (needswap) 131 return bswap16(x); 132 else return x; 133 } 134 135 static __inline u_int32_t iswap32(x) 136 u_int32_t x; 137 { 138 if (needswap) 139 return bswap32(x); 140 else return x; 141 } 142 143 static __inline u_int64_t iswap64(x) 144 u_int64_t x; 145 { 146 if (needswap) 147 return bswap64(x); 148 else return x; 149 } 150 151 #ifndef __P 152 #include <sys/cdefs.h> 153 #endif 154 155 /* filestore-specific hooks */ 156 int fs_read_sblock __P((char *)); 157 struct ufsi *fs_parametrize __P((void)); 158 ino_t fs_maxino __P((void)); 159 160 /* operator interface functions */ 161 void broadcast __P((char *message)); 162 void lastdump __P((int arg)); /* int should be char */ 163 void msg __P((const char *fmt, ...)) __attribute__((__format__(__printf__,1,2))); 164 void msgtail __P((const char *fmt, ...)) __attribute__((__format__(__printf__,1,2))); 165 int query __P((char *question)); 166 void quit __P((const char *fmt, ...)) __attribute__((__format__(__printf__,1,2))); 167 void set_operators __P((void)); 168 time_t do_stats __P((void)); 169 void statussig __P((int)); 170 void timeest __P((void)); 171 time_t unctime __P((char *str)); 172 173 /* mapping routines */ 174 struct dinode; 175 long blockest __P((struct dinode *dp)); 176 void mapfileino __P((ino_t, long *, int *)); 177 int mapfiles __P((ino_t maxino, long *tapesize, char *disk, 178 char * const *dirv)); 179 int mapdirs __P((ino_t maxino, long *tapesize)); 180 181 /* file dumping routines */ 182 void blksout __P((daddr_t *blkp, int frags, ino_t ino)); 183 void dumpino __P((struct dinode *dp, ino_t ino)); 184 void dumpmap __P((char *map, int type, ino_t ino)); 185 void writeheader __P((ino_t ino)); 186 187 /* data block caching */ 188 void bread __P((daddr_t blkno, char *buf, int size)); 189 void rawread __P((daddr_t, char *, int)); 190 void initcache __P((int, int)); 191 void printcachestats __P((void)); 192 193 /* tape writing routines */ 194 int alloctape __P((void)); 195 void close_rewind __P((void)); 196 void dumpblock __P((daddr_t blkno, int size)); 197 void startnewtape __P((int top)); 198 void trewind __P((void)); 199 void writerec __P((char *dp, int isspcl)); 200 201 void Exit __P((int status)); 202 void dumpabort __P((int signo)); 203 void getfstab __P((void)); 204 205 char *rawname __P((char *cp)); 206 struct dinode *getino __P((ino_t inum)); 207 208 /* rdump routines */ 209 #ifdef RDUMP 210 void rmtclose __P((void)); 211 int rmthost __P((char *host)); 212 int rmtopen __P((char *tape, int mode)); 213 int rmtwrite __P((char *buf, int count)); 214 #endif /* RDUMP */ 215 216 void interrupt __P((int signo)); /* in case operator bangs on console */ 217 218 /* 219 * Exit status codes 220 */ 221 #define X_FINOK 0 /* normal exit */ 222 #define X_REWRITE 2 /* restart writing from the check point */ 223 #define X_ABORT 3 /* abort dump; don't attempt checkpointing */ 224 225 #define OPGRENT "operator" /* group entry to notify */ 226 #define DIALUP "ttyd" /* prefix for dialups */ 227 228 struct fstab *fstabsearch __P((char *key)); /* search fs_file and fs_spec */ 229 230 #ifndef NAME_MAX 231 #define NAME_MAX 255 232 #endif 233 234 /* 235 * The contents of the file _PATH_DUMPDATES is maintained both on 236 * a linked list, and then (eventually) arrayified. 237 */ 238 struct dumpdates { 239 char dd_name[NAME_MAX+3]; 240 char dd_level; 241 time_t dd_ddate; 242 }; 243 struct dumptime { 244 struct dumpdates dt_value; 245 struct dumptime *dt_next; 246 }; 247 struct dumptime *dthead; /* head of the list version */ 248 int nddates; /* number of records (might be zero) */ 249 int ddates_in; /* we have read the increment file */ 250 struct dumpdates **ddatev; /* the arrayfied version */ 251 void initdumptimes __P((void)); 252 void getdumptime __P((void)); 253 void putdumptime __P((void)); 254 #define ITITERATE(i, ddp) \ 255 for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i]) 256 257 void sig __P((int signo)); 258 259 /* 260 * Compatibility with old systems. 261 */ 262 #ifdef COMPAT 263 #include <sys/file.h> 264 #define strchr(a,b) index(a,b) 265 #define strrchr(a,b) rindex(a,b) 266 extern char *strdup(), *ctime(); 267 extern int read(), write(); 268 extern int errno; 269 #endif 270 271 #ifndef _PATH_UTMP 272 #define _PATH_UTMP "/etc/utmp" 273 #endif 274 #ifndef _PATH_FSTAB 275 #define _PATH_FSTAB "/etc/fstab" 276 #endif 277 278 #ifdef sunos 279 extern char *calloc(); 280 extern char *malloc(); 281 extern long atol(); 282 extern char *strcpy(); 283 extern char *strncpy(); 284 extern char *strcat(); 285 extern time_t time(); 286 extern void endgrent(); 287 extern void exit(); 288 extern off_t lseek(); 289 extern const char *strerror(); 290 #endif 291
Indexes created Thu Sep 25 16:09:42 GMT 2025