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>, 1994-1997
5 * Stelian Pop <pop@noos.fr>, 1999-2000
6 * Stelian Pop <pop@noos.fr> - AlcĂ´ve <www.alcove.fr>, 2000
10 * Copyright (c) 1980, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the University of
24 * California, Berkeley and its contributors.
25 * 4. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 static const char rcsid[] =
44 "$Id: itime.c,v 1.14 2000/12/21 11:14:54 stelian Exp $";
48 #include <sys/param.h>
51 #include <linux/ext2_fs.h>
52 #include <bsdcompat.h>
57 #include <sys/vnode.h>
59 #include <ufs/fsdir.h>
60 #include <ufs/inode.h>
63 #include <ufs/ufs/dinode.h>
67 #include <protocols/dumprestore.h>
78 #include <ext2fs/ext2fs.h>
83 struct dumpdates **ddatev;
86 struct dumptime *dthead;
88 static void dumprecout __P((FILE *, struct dumpdates *));
89 static int getrecord __P((FILE *, struct dumpdates *));
90 static int makedumpdate __P((struct dumpdates *, char *));
91 static void readdumptimes __P((FILE *));
94 initdumptimes(int createdumpdates)
98 if ((df = fopen(dumpdates, "r")) == NULL) {
99 if (errno != ENOENT) {
100 quit("cannot read %s: %s\n", dumpdates,
104 if (createdumpdates) {
106 * Dumpdates does not exist, make an empty one.
108 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
109 if ((df = fopen(dumpdates, "w")) == NULL) {
110 quit("cannot create %s: %s\n", dumpdates,
115 if ((df = fopen(dumpdates, "r")) == NULL) {
116 quit("cannot read %s even after creating it: %s\n",
117 dumpdates, strerror(errno));
122 msg("WARNING: no file `%s'\n", dumpdates);
125 (void) flock(fileno(df), LOCK_SH);
132 readdumptimes(FILE *df)
135 register struct dumptime *dtwalk;
138 dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
139 if (getrecord(df, &(dtwalk->dt_value)) < 0)
142 dtwalk->dt_next = dthead;
148 * arrayify the list, leaving enough room for the additional
149 * record that we may have to add to the ddate structure
151 ddatev = (struct dumpdates **)
152 calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
154 for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
155 ddatev[i] = &dtwalk->dt_value;
159 getdumptime(int createdumpdates)
161 register struct dumpdates *ddp;
167 msg("Looking for name %s in dumpdates = %s for level = %c\n",
168 fname, dumpdates, level);
173 /* If this is a level 0 dump, and we're not updating
174 dumpdates, there's no point in trying to read
175 dumpdates. It may not exist yet, or may not be mounted. For
176 incrementals, we *must* read dumpdates (fail if it's not there!) */
177 if ( (level == lastlevel) && !createdumpdates)
179 initdumptimes(createdumpdates);
183 * Go find the entry with the same name for a lower increment
187 if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
189 if (ddp->dd_level >= level)
192 if (ddp->dd_ddate <= (time_t)spcl.c_ddate)
194 if (ddp->dd_ddate <= spcl.c_ddate)
197 spcl.c_ddate = ddp->dd_ddate;
198 lastlevel = ddp->dd_level;
206 register struct dumpdates *dtwalk;
213 if ((df = fopen(dumpdates, "r+")) == NULL)
214 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
216 (void) flock(fd, LOCK_EX);
218 free((char *)ddatev);
224 if (fseek(df, 0L, 0) < 0)
225 quit("fseek: %s\n", strerror(errno));
227 ITITERATE(i, dtwalk) {
228 if (strncmp(fname, dtwalk->dd_name,
229 sizeof (dtwalk->dd_name)) != 0)
231 if (dtwalk->dd_level != level)
236 * construct the new upper bound;
237 * Enough room has been allocated.
239 dtwalk = ddatev[nddates] =
240 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
243 (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
244 dtwalk->dd_level = level;
245 dtwalk->dd_ddate = spcl.c_date;
247 ITITERATE(i, dtwalk) {
248 dumprecout(df, dtwalk);
251 quit("%s: %s\n", dumpdates, strerror(errno));
252 if (ftruncate(fd, ftell(df)))
253 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
255 msg("level %c dump on %s", level,
257 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
259 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
264 dumprecout(FILE *file, struct dumpdates *what)
267 if (fprintf(file, "%s %c %s",
270 ctime(&what->dd_ddate)) < 0)
271 quit("%s: %s\n", dumpdates, strerror(errno));
277 getrecord(FILE *df, struct dumpdates *ddatep)
282 if (fgets(tbuf, sizeof (tbuf), df) == NULL)
285 if (makedumpdate(ddatep, tbuf) < 0)
286 msg("Unknown intermediate format in %s, line %d\n",
290 msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
291 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
297 makedumpdate(struct dumpdates *ddp, char *tbuf)
302 if ( NULL == (tok = strsep( &tbuf, " ")) )
304 if ( strlen(tok) > MAXPATHLEN )
306 strcpy(ddp->dd_name, tok);
309 for( ; *tbuf == ' ' ; tbuf++);
312 ddp->dd_level = *tbuf;
316 for( ; *tbuf == ' ' ; tbuf++);
319 ddp->dd_ddate = unctime(tbuf);
320 if (ddp->dd_ddate < 0)
323 ddp->dd_fstab = fstabsearch(ddp->dd_name);