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
41 * $Id: itime.c,v 1.5 1999/10/11 13:31:11 stelian Exp $
44 #include <sys/param.h>
47 #include <linux/ext2_fs.h>
48 #include <bsdcompat.h>
53 #include <sys/vnode.h>
55 #include <ufs/fsdir.h>
56 #include <ufs/inode.h>
59 #include <ufs/ufs/dinode.h>
63 #include <protocols/dumprestore.h>
74 #include <ext2fs/ext2fs.h>
79 struct dumpdates **ddatev = 0;
82 struct dumptime *dthead = 0;
84 static void dumprecout __P((FILE *, struct dumpdates *));
85 static int getrecord __P((FILE *, struct dumpdates *));
86 static int makedumpdate __P((struct dumpdates *, char *));
87 static void readdumptimes __P((FILE *));
90 initdumptimes(int createdumpdates)
94 if ((df = fopen(dumpdates, "r")) == NULL) {
95 if (errno != ENOENT) {
96 quit("cannot read %s: %s\n", dumpdates,
100 if (createdumpdates) {
102 * Dumpdates does not exist, make an empty one.
104 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
105 if ((df = fopen(dumpdates, "w")) == NULL) {
106 quit("cannot create %s: %s\n", dumpdates,
111 if ((df = fopen(dumpdates, "r")) == NULL) {
112 quit("cannot read %s even after creating it: %s\n",
113 dumpdates, strerror(errno));
118 msg("WARNING: no file `%s'\n", dumpdates);
121 (void) flock(fileno(df), LOCK_SH);
128 readdumptimes(FILE *df)
131 register struct dumptime *dtwalk;
134 dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
135 if (getrecord(df, &(dtwalk->dt_value)) < 0)
138 dtwalk->dt_next = dthead;
144 * arrayify the list, leaving enough room for the additional
145 * record that we may have to add to the ddate structure
147 ddatev = (struct dumpdates **)
148 calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
150 for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
151 ddatev[i] = &dtwalk->dt_value;
155 getdumptime(int createdumpdates)
157 register struct dumpdates *ddp;
163 msg("Looking for name %s in dumpdates = %s for level = %c\n",
164 fname, dumpdates, level);
169 /* if we're not going to update dumpdates, there's no point in reading
170 it, particularly since /var might not be mounted... wait until here
171 to benefit from the initialization of variables needed by parent */
172 if (!uflag && level == lastlevel)
174 initdumptimes(createdumpdates);
178 * Go find the entry with the same name for a lower increment
182 if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
184 if (ddp->dd_level >= level)
187 if (ddp->dd_ddate <= (time_t)spcl.c_ddate)
189 if (ddp->dd_ddate <= spcl.c_ddate)
192 spcl.c_ddate = ddp->dd_ddate;
193 lastlevel = ddp->dd_level;
201 register struct dumpdates *dtwalk;
208 if ((df = fopen(dumpdates, "r+")) == NULL)
209 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
211 (void) flock(fd, LOCK_EX);
213 free((char *)ddatev);
219 if (fseek(df, 0L, 0) < 0)
220 quit("fseek: %s\n", strerror(errno));
222 ITITERATE(i, dtwalk) {
223 if (strncmp(fname, dtwalk->dd_name,
224 sizeof (dtwalk->dd_name)) != 0)
226 if (dtwalk->dd_level != level)
231 * construct the new upper bound;
232 * Enough room has been allocated.
234 dtwalk = ddatev[nddates] =
235 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
238 (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
239 dtwalk->dd_level = level;
240 dtwalk->dd_ddate = spcl.c_date;
242 ITITERATE(i, dtwalk) {
243 dumprecout(df, dtwalk);
246 quit("%s: %s\n", dumpdates, strerror(errno));
247 if (ftruncate(fd, ftell(df)))
248 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
250 msg("level %c dump on %s", level,
252 spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
254 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
259 dumprecout(FILE *file, struct dumpdates *what)
262 if (fprintf(file, DUMPOUTFMT,
265 ctime(&what->dd_ddate)) < 0)
266 quit("%s: %s\n", dumpdates, strerror(errno));
272 getrecord(FILE *df, struct dumpdates *ddatep)
277 if (fgets(tbuf, sizeof (tbuf), df) == NULL)
280 if (makedumpdate(ddatep, tbuf) < 0)
281 msg("Unknown intermediate format in %s, line %d\n",
285 msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
286 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
292 makedumpdate(struct dumpdates *ddp, char *tbuf)
296 (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
297 ddp->dd_ddate = unctime(un_buf);
298 if (ddp->dd_ddate < 0)