]>
git.wh0rd.org - dump.git/blob - dump/itime.c
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
);