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@cybercable.fr>, 1999
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
44 static char sccsid[] = "@(#)itime.c 8.1 (Berkeley) 6/5/93";
46 static const char rcsid[] =
47 "$Id: itime.c,v 1.4 1999/10/11 13:08:07 stelian Exp $";
50 #include <sys/param.h>
53 #include <linux/ext2_fs.h>
54 #include <bsdcompat.h>
59 #include <sys/vnode.h>
61 #include <ufs/fsdir.h>
62 #include <ufs/inode.h>
65 #include <ufs/ufs/dinode.h>
69 #include <protocols/dumprestore.h>
80 #include <ext2fs/ext2fs.h>
85 struct dumpdates **ddatev = 0;
88 struct dumptime *dthead = 0;
90 static void dumprecout __P((FILE *, struct dumpdates *));
91 static int getrecord __P((FILE *, struct dumpdates *));
92 static int makedumpdate __P((struct dumpdates *, char *));
93 static void readdumptimes __P((FILE *));
96 initdumptimes(int createdumpdates)
100 if ((df = fopen(dumpdates, "r")) == NULL) {
101 if (errno != ENOENT) {
102 quit("cannot read %s: %s\n", dumpdates,
106 if (createdumpdates) {
108 * Dumpdates does not exist, make an empty one.
110 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
111 if ((df = fopen(dumpdates, "w")) == NULL) {
112 quit("cannot create %s: %s\n", dumpdates,
117 if ((df = fopen(dumpdates, "r")) == NULL) {
118 quit("cannot read %s even after creating it: %s\n",
119 dumpdates, strerror(errno));
124 msg("WARNING: no file `%s'\n", dumpdates);
127 (void) flock(fileno(df), LOCK_SH);
134 readdumptimes(FILE *df)
137 register struct dumptime *dtwalk;
140 dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
141 if (getrecord(df, &(dtwalk->dt_value)) < 0)
144 dtwalk->dt_next = dthead;
150 * arrayify the list, leaving enough room for the additional
151 * record that we may have to add to the ddate structure
153 ddatev = (struct dumpdates **)
154 calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
156 for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
157 ddatev[i] = &dtwalk->dt_value;
161 getdumptime(int createdumpdates)
163 register struct dumpdates *ddp;
169 msg("Looking for name %s in dumpdates = %s for level = %c\n",
170 fname, dumpdates, level);
175 /* if we're not going to update dumpdates, there's no point in reading
176 it, particularly since /var might not be mounted... wait until here
177 to benefit from the initialization of variables needed by parent */
178 if (!uflag && level == lastlevel)
180 initdumptimes(createdumpdates);
184 * Go find the entry with the same name for a lower increment
188 if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
190 if (ddp->dd_level >= level)
193 if (ddp->dd_ddate <= (time_t)spcl.c_ddate)
195 if (ddp->dd_ddate <= spcl.c_ddate)
198 spcl.c_ddate = ddp->dd_ddate;
199 lastlevel = ddp->dd_level;
207 register struct dumpdates *dtwalk;
214 if ((df = fopen(dumpdates, "r+")) == NULL)
215 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
217 (void) flock(fd, LOCK_EX);
219 free((char *)ddatev);
225 if (fseek(df, 0L, 0) < 0)
226 quit("fseek: %s\n", strerror(errno));
228 ITITERATE(i, dtwalk) {
229 if (strncmp(fname, dtwalk->dd_name,
230 sizeof (dtwalk->dd_name)) != 0)
232 if (dtwalk->dd_level != level)
237 * construct the new upper bound;
238 * Enough room has been allocated.
240 dtwalk = ddatev[nddates] =
241 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
244 (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
245 dtwalk->dd_level = level;
246 dtwalk->dd_ddate = spcl.c_date;
248 ITITERATE(i, dtwalk) {
249 dumprecout(df, dtwalk);
252 quit("%s: %s\n", dumpdates, strerror(errno));
253 if (ftruncate(fd, ftell(df)))
254 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
256 msg("level %c dump on %s", level,
258 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
260 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
265 dumprecout(FILE *file, struct dumpdates *what)
268 if (fprintf(file, DUMPOUTFMT,
271 ctime(&what->dd_ddate)) < 0)
272 quit("%s: %s\n", dumpdates, strerror(errno));
278 getrecord(FILE *df, struct dumpdates *ddatep)
283 if (fgets(tbuf, sizeof (tbuf), df) == NULL)
286 if (makedumpdate(ddatep, tbuf) < 0)
287 msg("Unknown intermediate format in %s, line %d\n",
291 msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
292 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
298 makedumpdate(struct dumpdates *ddp, char *tbuf)
302 (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
303 ddp->dd_ddate = unctime(un_buf);
304 if (ddp->dd_ddate < 0)