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1227625a SP |
1 | /* |
2 | * Ported to Linux's Second Extended File System as part of the | |
3 | * dump and restore backup suit | |
4 | * Remy Card <card@Linux.EU.Org>, 1994, 1995, 1996 | |
5 | * | |
6 | */ | |
7 | ||
8 | /*- | |
9 | * Copyright (c) 1980, 1993 | |
10 | * The Regents of the University of California. All rights reserved. | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions and the following disclaimer. | |
17 | * 2. Redistributions in binary form must reproduce the above copyright | |
18 | * notice, this list of conditions and the following disclaimer in the | |
19 | * documentation and/or other materials provided with the distribution. | |
20 | * 3. All advertising materials mentioning features or use of this software | |
21 | * must display the following acknowledgement: | |
22 | * This product includes software developed by the University of | |
23 | * California, Berkeley and its contributors. | |
24 | * 4. Neither the name of the University nor the names of its contributors | |
25 | * may be used to endorse or promote products derived from this software | |
26 | * without specific prior written permission. | |
27 | * | |
28 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
29 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
30 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
31 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
32 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
36 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
37 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
38 | * SUCH DAMAGE. | |
39 | * | |
40 | * @(#)dump.h 8.2 (Berkeley) 4/28/95 | |
41 | */ | |
42 | ||
43 | #define MAXINOPB (MAXBSIZE / sizeof(struct dinode)) | |
44 | #define MAXNINDIR (MAXBSIZE / sizeof(daddr_t)) | |
45 | ||
46 | /* | |
47 | * Dump maps used to describe what is to be dumped. | |
48 | */ | |
49 | int mapsize; /* size of the state maps */ | |
50 | char *usedinomap; /* map of allocated inodes */ | |
51 | char *dumpdirmap; /* map of directories to be dumped */ | |
52 | char *dumpinomap; /* map of files to be dumped */ | |
53 | /* | |
54 | * Map manipulation macros. | |
55 | */ | |
56 | #define SETINO(ino, map) \ | |
57 | map[(u_int)((ino) - 1) / NBBY] |= 1 << ((u_int)((ino) - 1) % NBBY) | |
58 | #define CLRINO(ino, map) \ | |
59 | map[(u_int)((ino) - 1) / NBBY] &= ~(1 << ((u_int)((ino) - 1) % NBBY)) | |
60 | #define TSTINO(ino, map) \ | |
61 | (map[(u_int)((ino) - 1) / NBBY] & (1 << ((u_int)((ino) - 1) % NBBY))) | |
62 | ||
63 | /* | |
64 | * All calculations done in 0.1" units! | |
65 | */ | |
66 | char *disk; /* name of the disk file */ | |
67 | char *tape; /* name of the tape file */ | |
68 | char *dumpdates; /* name of the file containing dump date information*/ | |
69 | char *temp; /* name of the file for doing rewrite of dumpdates */ | |
70 | char lastlevel; /* dump level of previous dump */ | |
71 | char level; /* dump level of this dump */ | |
72 | int uflag; /* update flag */ | |
73 | int diskfd; /* disk file descriptor */ | |
74 | int tapefd; /* tape file descriptor */ | |
75 | int pipeout; /* true => output to standard output */ | |
76 | ino_t curino; /* current inumber; used globally */ | |
77 | int newtape; /* new tape flag */ | |
78 | int density; /* density in 0.1" units */ | |
79 | long tapesize; /* estimated tape size, blocks */ | |
80 | long tsize; /* tape size in 0.1" units */ | |
81 | long asize; /* number of 0.1" units written on current tape */ | |
82 | int etapes; /* estimated number of tapes */ | |
83 | int nonodump; /* if set, do not honor UF_NODUMP user flags */ | |
84 | ||
85 | int notify; /* notify operator flag */ | |
86 | int blockswritten; /* number of blocks written on current tape */ | |
87 | int tapeno; /* current tape number */ | |
88 | time_t tstart_writing; /* when started writing the first tape block */ | |
89 | #ifdef __linux__ | |
90 | time_t tend_writing; /* after writing the last tape block */ | |
91 | ext2_filsys fs; | |
92 | #else | |
93 | struct fs *sblock; /* the file system super block */ | |
94 | char sblock_buf[MAXBSIZE]; | |
95 | #endif | |
96 | long dev_bsize; /* block size of underlying disk device */ | |
97 | int dev_bshift; /* log2(dev_bsize) */ | |
98 | int tp_bshift; /* log2(TP_BSIZE) */ | |
99 | ||
100 | #ifndef __P | |
101 | #include <sys/cdefs.h> | |
102 | #endif | |
103 | ||
104 | /* operator interface functions */ | |
105 | void broadcast __P((char *message)); | |
106 | void lastdump __P((int arg)); /* int should be char */ | |
107 | void msg __P((const char *fmt, ...)); | |
108 | void msgtail __P((const char *fmt, ...)); | |
109 | int query __P((char *question)); | |
110 | void quit __P((const char *fmt, ...)); | |
111 | void set_operators __P((void)); | |
112 | void timeest __P((void)); | |
113 | time_t unctime __P((char *str)); | |
114 | ||
115 | /* mapping rouintes */ | |
116 | struct dinode; | |
117 | long blockest __P((struct dinode *dp)); | |
118 | int mapfiles __P((ino_t maxino, long *tapesize)); | |
119 | #ifdef __linux__ | |
120 | int mapfilesfromdir __P((ino_t maxino, long *tapesize, char *directory)); | |
121 | #endif | |
122 | int mapdirs __P((ino_t maxino, long *tapesize)); | |
123 | ||
124 | /* file dumping routines */ | |
125 | void blksout __P((daddr_t *blkp, int frags, ino_t ino)); | |
126 | void bread __P((daddr_t blkno, char *buf, int size)); | |
127 | void dumpino __P((struct dinode *dp, ino_t ino)); | |
128 | #ifdef __linux__ | |
129 | void dumpdirino __P((struct dinode *dp, ino_t ino)); | |
130 | #endif | |
131 | void dumpmap __P((char *map, int type, ino_t ino)); | |
132 | void writeheader __P((ino_t ino)); | |
133 | ||
134 | /* tape writing routines */ | |
135 | int alloctape __P((void)); | |
136 | void close_rewind __P((void)); | |
137 | void dumpblock __P((daddr_t blkno, int size)); | |
138 | void startnewtape __P((int top)); | |
139 | void trewind __P((void)); | |
140 | void writerec __P((char *dp, int isspcl)); | |
141 | ||
142 | __dead void Exit __P((int status)); | |
143 | void dumpabort __P((int signo)); | |
144 | void getfstab __P((void)); | |
145 | ||
146 | char *rawname __P((char *cp)); | |
147 | struct dinode *getino __P((ino_t inum)); | |
148 | ||
149 | /* rdump routines */ | |
150 | #ifdef RDUMP | |
151 | void rmtclose __P((void)); | |
152 | int rmthost __P((char *host)); | |
153 | int rmtopen __P((char *tape, int mode)); | |
154 | int rmtwrite __P((char *buf, int count)); | |
155 | #endif /* RDUMP */ | |
156 | ||
157 | void interrupt __P((int signo)); /* in case operator bangs on console */ | |
158 | ||
159 | /* | |
160 | * Exit status codes | |
161 | */ | |
162 | #define X_FINOK 0 /* normal exit */ | |
163 | #define X_REWRITE 2 /* restart writing from the check point */ | |
164 | #define X_ABORT 3 /* abort dump; don't attempt checkpointing */ | |
165 | ||
166 | #define OPGRENT "operator" /* group entry to notify */ | |
167 | #ifdef __linux__ | |
168 | #define DIALUP "ttyS" /* prefix for dialups */ | |
169 | #else | |
170 | #define DIALUP "ttyd" /* prefix for dialups */ | |
171 | #endif | |
172 | ||
173 | struct fstab *fstabsearch __P((char *key)); /* search fs_file and fs_spec */ | |
174 | #ifdef __linux__ | |
175 | struct fstab *fstabsearchdir __P((char *key, char *dir)); /* search fs_file and fs_spec */ | |
176 | #endif | |
177 | ||
178 | #ifndef NAME_MAX | |
179 | #define NAME_MAX 255 | |
180 | #endif | |
181 | ||
182 | /* | |
183 | * The contents of the file _PATH_DUMPDATES is maintained both on | |
184 | * a linked list, and then (eventually) arrayified. | |
185 | */ | |
186 | struct dumpdates { | |
187 | char dd_name[NAME_MAX+3]; | |
188 | char dd_level; | |
189 | time_t dd_ddate; | |
190 | }; | |
191 | struct dumptime { | |
192 | struct dumpdates dt_value; | |
193 | struct dumptime *dt_next; | |
194 | }; | |
195 | struct dumptime *dthead; /* head of the list version */ | |
196 | int nddates; /* number of records (might be zero) */ | |
197 | int ddates_in; /* we have read the increment file */ | |
198 | struct dumpdates **ddatev; /* the arrayfied version */ | |
199 | void initdumptimes __P((void)); | |
200 | void getdumptime __P((void)); | |
201 | void putdumptime __P((void)); | |
202 | #define ITITERATE(i, ddp) \ | |
203 | for (ddp = ddatev[i = 0]; i < nddates; ddp = ddatev[++i]) | |
204 | ||
205 | void sig __P((int signo)); | |
206 | ||
207 | /* | |
208 | * Compatibility with old systems. | |
209 | */ | |
210 | #ifdef COMPAT | |
211 | #include <sys/file.h> | |
212 | #define strchr(a,b) index(a,b) | |
213 | #define strrchr(a,b) rindex(a,b) | |
214 | extern char *strdup(), *ctime(); | |
215 | extern int read(), write(); | |
216 | extern int errno; | |
217 | #endif | |
218 | ||
219 | #ifdef __linux__ | |
220 | #define DUMP_CURRENT_REV 0 | |
221 | #endif | |
222 | ||
223 | #ifndef __linux__ | |
224 | #ifndef _PATH_UTMP | |
225 | #define _PATH_UTMP "/etc/utmp" | |
226 | #endif | |
227 | #ifndef _PATH_FSTAB | |
228 | #define _PATH_FSTAB "/etc/fstab" | |
229 | #endif | |
230 | #endif | |
231 | ||
232 | #ifdef sunos | |
233 | extern char *calloc(); | |
234 | extern char *malloc(); | |
235 | extern long atol(); | |
236 | extern char *strcpy(); | |
237 | extern char *strncpy(); | |
238 | extern char *strcat(); | |
239 | extern time_t time(); | |
240 | extern void endgrent(); | |
241 | extern __dead void exit(); | |
242 | extern off_t lseek(); | |
243 | extern const char *strerror(); | |
244 | #endif |