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 1.28 2004/06/17 09:01:15 stelian Exp $";
52 #include <sys/param.h>
56 #ifdef HAVE_EXT2FS_EXT2_FS_H
57 #include <ext2fs/ext2_fs.h>
59 #include <linux/ext2_fs.h>
61 #include <ext2fs/ext2fs.h>
62 #include <bsdcompat.h>
66 #include <sys/vnode.h>
68 #include <ufs/fsdir.h>
69 #include <ufs/inode.h>
72 #include <ufs/ufs/dinode.h>
75 #include <protocols/dumprestore.h>
79 struct dumpdates **ddatev;
82 struct dumptime *dthead;
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)
95 if ((df = fopen(dumpdates, "r")) == NULL) {
96 if (errno != ENOENT) {
97 quit("cannot read %s: %s\n", dumpdates,
101 if (createdumpdates) {
103 * Dumpdates does not exist, make an empty one.
105 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
106 if ((df = fopen(dumpdates, "w")) == NULL) {
107 quit("cannot create %s: %s\n", dumpdates,
112 if ((df = fopen(dumpdates, "r")) == NULL) {
113 quit("cannot read %s even after creating it: %s\n",
114 dumpdates, strerror(errno));
119 msg("WARNING: no file `%s'\n", dumpdates);
122 memset(&lock, 0, sizeof(lock));
123 lock.l_type = F_RDLCK;
124 if (fcntl(fileno(df), F_SETLKW, &lock) < 0)
125 quit("cannot set read lock on %s: %s\n",
126 dumpdates, strerror(errno));
133 readdumptimes(FILE *df)
136 struct dumptime *dtwalk;
139 dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
140 if (getrecord(df, &(dtwalk->dt_value)) < 0)
143 dtwalk->dt_next = dthead;
149 * arrayify the list, leaving enough room for the additional
150 * record that we may have to add to the ddate structure
152 ddatev = (struct dumpdates **)
153 calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
155 for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
156 ddatev[i] = &dtwalk->dt_value;
160 getdumptime(int createdumpdates)
162 struct dumpdates *ddp;
166 msg("Looking for name %s in dumpdates = %s for level = %s\n",
167 disk, dumpdates, level);
170 memset(&lastlevel, 0, NUM_STR_SIZE);
172 /* If this is a level 0 dump, and we're not updating
173 dumpdates, there's no point in trying to read
174 dumpdates. It may not exist yet, or may not be mounted. For
175 incrementals, we *must* read dumpdates (fail if it's not there!) */
176 if ( (!strcmp(level, lastlevel)) && !createdumpdates)
178 initdumptimes(createdumpdates);
182 * Go find the entry with the same name for a lower increment
186 if (strncmp(disk, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
188 if (ddp->dd_level >= atoi(level))
190 if (ddp->dd_ddate <= (time_t)spcl.c_ddate)
192 spcl.c_ddate = ddp->dd_ddate;
193 snprintf(lastlevel, NUM_STR_SIZE, "%d", ddp->dd_level);
201 struct dumpdates *dtwalk;
208 if ((df = fopen(dumpdates, "r+")) == NULL)
209 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
211 memset(&lock, 0, sizeof(lock));
212 lock.l_type = F_WRLCK;
213 if (fcntl(fd, F_SETLKW, &lock) < 0)
214 quit("cannot set write lock on %s: %s\n", dumpdates, strerror(errno));
215 free((char *)ddatev);
221 if (fseek(df, 0L, 0) < 0)
222 quit("fseek: %s\n", strerror(errno));
224 ITITERATE(i, dtwalk) {
225 if (strncmp(disk, dtwalk->dd_name,
226 sizeof (dtwalk->dd_name)) != 0)
228 if (dtwalk->dd_level != atoi(level))
233 * construct the new upper bound;
234 * Enough room has been allocated.
236 dtwalk = ddatev[nddates] =
237 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
240 (void) strncpy(dtwalk->dd_name, disk, sizeof (dtwalk->dd_name));
241 dtwalk->dd_level = atoi(level);
242 dtwalk->dd_ddate = spcl.c_date;
244 ITITERATE(i, dtwalk) {
245 dumprecout(df, dtwalk);
248 quit("%s: %s\n", dumpdates, strerror(errno));
249 if (ftruncate(fd, ftell(df)))
250 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
255 dumprecout(FILE *file, struct dumpdates *what)
260 tms = localtime(&what->dd_ddate);
261 strncpy(buf, asctime(tms), sizeof(buf));
262 if (buf[24] != '\n' || buf[25] != '\0')
263 quit("asctime returned an unexpected string\n");
265 if (fprintf(file, "%s %d %s %c%2.2d%2.2d\n",
269 (tms->tm_gmtoff < 0 ? '-' : '+'),
270 abs(tms->tm_gmtoff) / 3600,
271 abs(tms->tm_gmtoff) % 3600 / 60) < 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 format in %s, line %d\n",
293 msg("getrecord: %s %d %s", ddatep->dd_name, ddatep->dd_level,
294 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
300 makedumpdate(struct dumpdates *ddp, char *tbuf)
304 if ( NULL == (tok = strsep( &tbuf, " ")) )
306 if ( !tbuf || strlen(tok) > MAXPATHLEN )
308 strcpy(ddp->dd_name, tok);
311 for( ; *tbuf == ' ' ; tbuf++);
314 ddp->dd_level = atoi(tbuf);
315 /* eat the rest of the numbers*/
316 for( ; *tbuf >= '0' && *tbuf <= '9' ; tbuf++);
319 for( ; *tbuf == ' ' ; tbuf++);
322 ddp->dd_ddate = unctime(tbuf);
323 if (ddp->dd_ddate < 0)
326 ddp->dd_fstab = fstabsearch(ddp->dd_name);