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 <stelian@popies.net>, 1999-2000
6 * Stelian Pop <stelian@popies.net> - AlcĂ´ve <www.alcove.com>, 2000-2002
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. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 static const char rcsid[] =
40 "$Id: itime.c,v 1.25 2003/03/30 15:40:36 stelian Exp $";
52 #include <sys/param.h>
57 #ifdef HAVE_EXT2FS_EXT2_FS_H
58 #include <ext2fs/ext2_fs.h>
60 #include <linux/ext2_fs.h>
62 #include <ext2fs/ext2fs.h>
63 #include <bsdcompat.h>
67 #include <sys/vnode.h>
69 #include <ufs/fsdir.h>
70 #include <ufs/inode.h>
73 #include <ufs/ufs/dinode.h>
76 #include <protocols/dumprestore.h>
80 struct dumpdates **ddatev;
83 struct dumptime *dthead;
85 static void dumprecout __P((FILE *, struct dumpdates *));
86 static int getrecord __P((FILE *, struct dumpdates *));
87 static int makedumpdate __P((struct dumpdates *, char *));
88 static void readdumptimes __P((FILE *));
91 initdumptimes(int createdumpdates)
96 if ((df = fopen(dumpdates, "r")) == NULL) {
97 if (errno != ENOENT) {
98 quit("cannot read %s: %s\n", dumpdates,
102 if (createdumpdates) {
104 * Dumpdates does not exist, make an empty one.
106 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
107 if ((df = fopen(dumpdates, "w")) == NULL) {
108 quit("cannot create %s: %s\n", dumpdates,
113 if ((df = fopen(dumpdates, "r")) == NULL) {
114 quit("cannot read %s even after creating it: %s\n",
115 dumpdates, strerror(errno));
120 msg("WARNING: no file `%s'\n", dumpdates);
123 memset(&lock, 0, sizeof(lock));
124 lock.l_type = F_RDLCK;
125 if (fcntl(fileno(df), F_SETLKW, &lock) < 0)
126 quit("cannot set read lock on %s: %s\n",
127 dumpdates, strerror(errno));
134 readdumptimes(FILE *df)
137 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 struct dumpdates *ddp;
167 msg("Looking for name %s in dumpdates = %s for level = %c\n",
168 disk, 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(disk, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
189 if (ddp->dd_level >= level)
191 if (ddp->dd_ddate <= (time_t)spcl.c_ddate)
193 spcl.c_ddate = ddp->dd_ddate;
194 lastlevel = ddp->dd_level;
202 struct dumpdates *dtwalk;
209 if ((df = fopen(dumpdates, "r+")) == NULL)
210 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
212 memset(&lock, 0, sizeof(lock));
213 lock.l_type = F_WRLCK;
214 if (fcntl(fd, F_SETLKW, &lock) < 0)
215 quit("cannot set write lock on %s: %s\n", dumpdates, strerror(errno));
216 free((char *)ddatev);
222 if (fseek(df, 0L, 0) < 0)
223 quit("fseek: %s\n", strerror(errno));
225 ITITERATE(i, dtwalk) {
226 if (strncmp(disk, dtwalk->dd_name,
227 sizeof (dtwalk->dd_name)) != 0)
229 if (dtwalk->dd_level != level)
234 * construct the new upper bound;
235 * Enough room has been allocated.
237 dtwalk = ddatev[nddates] =
238 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
241 (void) strncpy(dtwalk->dd_name, disk, sizeof (dtwalk->dd_name));
242 dtwalk->dd_level = level;
243 dtwalk->dd_ddate = spcl.c_date;
245 ITITERATE(i, dtwalk) {
246 dumprecout(df, dtwalk);
249 quit("%s: %s\n", dumpdates, strerror(errno));
250 if (ftruncate(fd, ftell(df)))
251 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
256 dumprecout(FILE *file, struct dumpdates *what)
261 tms = localtime(&what->dd_ddate);
262 strncpy(buf, asctime(tms), sizeof(buf));
263 if (buf[24] != '\n' || buf[25] != '\0')
264 quit("asctime returned an unexpected string\n");
266 if (fprintf(file, "%s %c %s %c%2.2d%2.2d\n",
270 (tms->tm_gmtoff < 0 ? '-' : '+'),
271 abs(tms->tm_gmtoff) / 3600,
272 abs(tms->tm_gmtoff) % 3600 / 60) < 0)
273 quit("%s: %s\n", dumpdates, strerror(errno));
279 getrecord(FILE *df, struct dumpdates *ddatep)
284 if (fgets(tbuf, sizeof (tbuf), df) == NULL)
287 if (makedumpdate(ddatep, tbuf) < 0)
288 msg("Unknown intermediate format in %s, line %d\n",
292 msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
293 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
299 makedumpdate(struct dumpdates *ddp, char *tbuf)
304 if ( NULL == (tok = strsep( &tbuf, " ")) )
306 if ( strlen(tok) > MAXPATHLEN )
308 strcpy(ddp->dd_name, tok);
311 for( ; *tbuf == ' ' ; tbuf++);
314 ddp->dd_level = *tbuf;
318 for( ; *tbuf == ' ' ; tbuf++);
321 ddp->dd_ddate = unctime(tbuf);
322 if (ddp->dd_ddate < 0)
325 ddp->dd_fstab = fstabsearch(ddp->dd_name);