dump.h revision 1.35
1 /* $NetBSD: dump.h,v 1.35 2003/03/27 13:56:46 lukem 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 /* XXX ondisk32 */ 42 #define MAXNINDIR (MAXBSIZE / sizeof(int32_t)) 43 44 /* 45 * Filestore-independent UFS data, so code can be more easily shared 46 * between ffs, lfs, and maybe ext2fs and others as well. 47 */ 48 struct ufsi { 49 int64_t ufs_dsize; /* file system size, in sectors */ 50 int32_t ufs_bsize; /* block size */ 51 int32_t ufs_bshift; /* log2(ufs_bsize) */ 52 int32_t ufs_fsize; /* fragment size */ 53 int32_t ufs_frag; /* block size / frag size */ 54 int32_t ufs_fsatoda; /* disk address conversion constant */ 55 int32_t ufs_nindir; /* disk addresses per indirect block */ 56 int32_t ufs_inopb; /* inodes per block */ 57 int32_t ufs_maxsymlinklen; /* max symlink length */ 58 int32_t ufs_bmask; /* block mask */ 59 int32_t ufs_fmask; /* frag mask */ 60 int64_t ufs_qbmask; /* ~ufs_bmask */ 61 int64_t ufs_qfmask; /* ~ufs_fmask */ 62 }; 63 #define fsatoda(u,a) ((a) << (u)->ufs_fsatoda) 64 #define ufs_fragroundup(u,size) /* calculates roundup(size, ufs_fsize) */ \ 65 (((size) + (u)->ufs_qfmask) & (u)->ufs_fmask) 66 #define ufs_blkoff(u,loc) /* calculates (loc % u->ufs_bsize) */ \ 67 ((loc) & (u)->ufs_qbmask) 68 #define ufs_dblksize(u,d,b) \ 69 ((((b) >= NDADDR || (d)->di_size >= ((b)+1) << (u)->ufs_bshift \ 70 ? (u)->ufs_bsize \ 71 : (ufs_fragroundup((u), ufs_blkoff(u, (d)->di_size)))))) 72 struct ufsi *ufsib; 73 74 /* 75 * Dump maps used to describe what is to be dumped. 76 */ 77 int mapsize; /* size of the state maps */ 78 char *usedinomap; /* map of allocated inodes */ 79 char *dumpdirmap; /* map of directories to be dumped */ 80 char *dumpinomap; /* map of files to be dumped */ 81 /* 82 * Map manipulation macros. 83 */ 84 #define SETINO(ino, map) \ 85 map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY) 86 #define CLRINO(ino, map) \ 87 map[(u_int)((ino) - 1) / NBBY] &= ~(1 << ((u_int)((ino) - 1) % NBBY)) 88 #define TSTINO(ino, map) \ 89 (map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY))) 90 91 /* 92 * All calculations done in 0.1" units! 93 */ 94 char *disk; /* name of the disk file */ 95 char *tape; /* name of the tape file */ 96 char *dumpdates; /* name of the file containing dump date information*/ 97 char *temp; /* name of the file for doing rewrite of dumpdates */ 98 char lastlevel; /* dump level of previous dump */ 99 char level; /* dump level of this dump */ 100 int uflag; /* update flag */ 101 int eflag; /* eject flag */ 102 int lflag; /* autoload flag */ 103 int diskfd; /* disk file descriptor */ 104 int tapefd; /* tape file descriptor */ 105 int pipeout; /* true => output to standard output */ 106 ino_t curino; /* current inumber; used globally */ 107 int newtape; /* new tape flag */ 108 long tapesize; /* estimated tape size, blocks */ 109 long tsize; /* tape size in 0.1" units */ 110 long asize; /* number of 0.1" units written on current tape */ 111 int etapes; /* estimated number of tapes */ 112 int nonodump; /* if set, do not honor UF_NODUMP user flags */ 113 int unlimited; /* if set, write to end of medium */ 114 115 extern int density; /* density in 0.1" units */ 116 extern int notify; /* notify operator flag */ 117 extern int timestamp; /* timestamp messages */ 118 extern int blockswritten; /* number of blocks written on current tape */ 119 extern int tapeno; /* current tape number */ 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); 161 162 /* operator interface functions */ 163 void broadcast(char *); 164 void lastdump(char); 165 void msg(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 166 void msgtail(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 167 int query(char *); 168 void quit(const char *fmt, ...) __attribute__((__format__(__printf__,1,2))); 169 time_t do_stats(void); 170 void statussig(int); 171 void timeest(void); 172 time_t unctime(char *); 173 174 /* mapping routines */ 175 struct dinode; 176 long blockest(struct dinode *); 177 void mapfileino(ino_t, long *, int *); 178 int mapfiles(ino_t, long *, char *, char * const *); 179 int mapdirs(ino_t, long *); 180 181 /* file dumping routines */ 182 /* XXX ondisk32 */ 183 void blksout(int32_t *, int, ino_t); 184 void dumpino(struct dinode *, ino_t); 185 void dumpmap(char *, int, ino_t); 186 void writeheader(ino_t); 187 188 /* data block caching */ 189 void bread(daddr_t, char *, int); 190 void rawread(daddr_t, char *, int); 191 void initcache(int, int); 192 void printcachestats(void); 193 194 /* tape writing routines */ 195 int alloctape(void); 196 void close_rewind(void); 197 void dumpblock(daddr_t, int); 198 void startnewtape(int); 199 void trewind(int); 200 void writerec(char *, int); 201 202 void Exit(int); 203 void dumpabort(int); 204 void getfstab(void); 205 206 char *rawname(char *); 207 struct dinode *getino(ino_t); 208 209 void *xcalloc(size_t, size_t); 210 void *xmalloc(size_t); 211 char *xstrdup(const char *); 212 213 /* rdump routines */ 214 #if defined(RDUMP) || defined(RRESTORE) 215 void rmtclose(void); 216 int rmthost(char *); 217 int rmtopen(char *, int, int); 218 int rmtwrite(char *, int); 219 int rmtioctl(int, int); 220 #endif /* RDUMP || RRESTORE */ 221 222 void interrupt(int); /* in case operator bangs on console */ 223 224 /* 225 * Exit status codes 226 */ 227 #define X_FINOK 0 /* normal exit */ 228 #define X_STARTUP 1 /* startup error */ 229 #define X_REWRITE 2 /* restart writing from the check point */ 230 #define X_ABORT 3 /* abort dump; don't attempt checkpointing */ 231 232 #define OPGRENT "operator" /* group entry to notify */ 233 #define DIALUP "ttyd" /* prefix for dialups */ 234 235 struct fstab *fstabsearch(const char *); /* search fs_file and fs_spec */ 236 struct statfs *mntinfosearch(const char *key); 237 238 #ifndef NAME_MAX 239 #define NAME_MAX 255 240 #endif 241 242 /* 243 * The contents of the file _PATH_DUMPDATES is maintained both on 244 * a linked list, and then (eventually) arrayified. 245 */ 246 struct dumpdates { 247 char dd_name[NAME_MAX+3]; 248 char dd_level; 249 time_t dd_ddate; 250 }; 251 252 extern int nddates; /* number of records (might be zero) */ 253 extern struct dumpdates **ddatev; /* the arrayfied version */ 254 255 void initdumptimes(void); 256 void getdumptime(void); 257 void putdumptime(void); 258 #define ITITERATE(i, ddp) \ 259 if (ddatev != NULL) \ 260 for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i]) 261 262 void sig(int signo); 263 264 /* 265 * Compatibility with old systems. 266 */ 267 #ifdef COMPAT 268 #include <sys/file.h> 269 #define strchr(a,b) index(a,b) 270 #define strrchr(a,b) rindex(a,b) 271 extern char *strdup(), *ctime(); 272 extern int read(), write(); 273 extern int errno; 274 #endif 275 276 #ifndef _PATH_FSTAB 277 #define _PATH_FSTAB "/etc/fstab" 278 #endif 279
Indexes created Sun Oct 19 02:09:48 GMT 2025