2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)itime.c 8.1 (Berkeley) 6/5/93
34 * $FreeBSD: src/sbin/dump/itime.c,v 1.3.2.1 2001/08/01 06:29:35 obrien Exp $
35 * $DragonFly: src/sbin/dump/itime.c,v 1.9 2005/04/13 16:07:15 joerg Exp $
38 #include <sys/param.h>
39 #include <sys/queue.h>
42 #include <sys/vnode.h>
44 #include <ufs/fsdir.h>
45 #include <ufs/inode.h>
48 #include <vfs/ufs/dinode.h>
51 #include <protocols/dumprestore.h>
64 struct dumpdates dt_value;
65 SLIST_ENTRY(dumptime) dt_list;
67 SLIST_HEAD(dthead, dumptime) dthead = SLIST_HEAD_INITIALIZER(dthead);
68 struct dumpdates **ddatev = NULL;
71 static void dumprecout(FILE *, struct dumpdates *);
72 static int getrecord(FILE *, struct dumpdates *);
73 static int makedumpdate(struct dumpdates *, char *);
74 static void readdumptimes(FILE *);
81 if ((df = fopen(dumpdates, "r")) == NULL) {
82 if (errno != ENOENT) {
83 msg("WARNING: cannot read %s: %s\n", dumpdates,
88 * Dumpdates does not exist, make an empty one.
90 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
91 if ((df = fopen(dumpdates, "w")) == NULL) {
92 msg("WARNING: cannot create %s: %s\n", dumpdates,
97 if ((df = fopen(dumpdates, "r")) == NULL) {
98 quit("cannot read %s even after creating it: %s\n",
99 dumpdates, strerror(errno));
103 flock(fileno(df), LOCK_SH);
109 readdumptimes(FILE *df)
112 struct dumptime *dtwalk;
115 dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
116 if (getrecord(df, &(dtwalk->dt_value)) < 0)
119 SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list);
123 * arrayify the list, leaving enough room for the additional
124 * record that we may have to add to the ddate structure
126 ddatev = (struct dumpdates **)
127 calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
128 dtwalk = SLIST_FIRST(&dthead);
129 for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list))
130 ddatev[i] = &dtwalk->dt_value;
136 struct dumpdates *ddp;
142 msg("Looking for name %s in dumpdates = %s for level = %c\n",
143 fname, dumpdates, level);
150 * Go find the entry with the same name for a lower increment
154 if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
156 if (ddp->dd_level >= level)
158 if (ddp->dd_ddate <= spcl.c_ddate)
160 spcl.c_ddate = ddp->dd_ddate;
161 lastlevel = ddp->dd_level;
169 struct dumpdates *dtwalk;
176 if ((df = fopen(dumpdates, "r+")) == NULL)
177 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
181 free((char *)ddatev);
185 if (fseek(df, 0L, 0) < 0)
186 quit("fseek: %s\n", strerror(errno));
188 ITITERATE(i, dtwalk) {
189 if (strncmp(fname, dtwalk->dd_name,
190 sizeof (dtwalk->dd_name)) != 0)
192 if (dtwalk->dd_level != level)
197 * construct the new upper bound;
198 * Enough room has been allocated.
200 dtwalk = ddatev[nddates] =
201 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
204 strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
205 dtwalk->dd_level = level;
206 dtwalk->dd_ddate = spcl.c_date;
208 ITITERATE(i, dtwalk) {
209 dumprecout(df, dtwalk);
212 quit("%s: %s\n", dumpdates, strerror(errno));
213 if (ftruncate(fd, ftell(df)))
214 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
216 msg("level %c dump on %s", level,
217 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
221 dumprecout(FILE *file, struct dumpdates *what)
224 if (fprintf(file, DUMPOUTFMT,
227 ctime(&what->dd_ddate)) < 0)
228 quit("%s: %s\n", dumpdates, strerror(errno));
234 getrecord(FILE *df, struct dumpdates *ddatep)
239 if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf)
242 if (makedumpdate(ddatep, tbuf) < 0)
243 msg("Unknown intermediate format in %s, line %d\n",
247 msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
248 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
254 makedumpdate(struct dumpdates *ddp, char *tbuf)
258 sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
259 ddp->dd_ddate = unctime(un_buf);
260 if (ddp->dd_ddate < 0)