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
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 1.10 2006/04/03 01:58:48 dillon Exp $
38 #include <sys/param.h>
39 #include <sys/queue.h>
42 #include <vfs/ufs/dinode.h>
43 #include <vfs/ufs/fs.h>
45 #include <protocols/dumprestore.h>
58 struct dumpdates dt_value
;
59 SLIST_ENTRY(dumptime
) dt_list
;
61 SLIST_HEAD(dthead
, dumptime
) dthead
= SLIST_HEAD_INITIALIZER(dthead
);
62 struct dumpdates
**ddatev
= NULL
;
65 static void dumprecout(FILE *, struct dumpdates
*);
66 static int getrecord(FILE *, struct dumpdates
*);
67 static int makedumpdate(struct dumpdates
*, char *);
68 static void readdumptimes(FILE *);
75 if ((df
= fopen(dumpdates
, "r")) == NULL
) {
76 if (errno
!= ENOENT
) {
77 msg("WARNING: cannot read %s: %s\n", dumpdates
,
82 * Dumpdates does not exist, make an empty one.
84 msg("WARNING: no file `%s', making an empty one\n", dumpdates
);
85 if ((df
= fopen(dumpdates
, "w")) == NULL
) {
86 msg("WARNING: cannot create %s: %s\n", dumpdates
,
91 if ((df
= fopen(dumpdates
, "r")) == NULL
) {
92 quit("cannot read %s even after creating it: %s\n",
93 dumpdates
, strerror(errno
));
97 flock(fileno(df
), LOCK_SH
);
103 readdumptimes(FILE *df
)
106 struct dumptime
*dtwalk
;
109 dtwalk
= (struct dumptime
*)calloc(1, sizeof (struct dumptime
));
110 if (getrecord(df
, &(dtwalk
->dt_value
)) < 0)
113 SLIST_INSERT_HEAD(&dthead
, dtwalk
, dt_list
);
117 * arrayify the list, leaving enough room for the additional
118 * record that we may have to add to the ddate structure
120 ddatev
= (struct dumpdates
**)
121 calloc((unsigned) (nddates
+ 1), sizeof (struct dumpdates
*));
122 dtwalk
= SLIST_FIRST(&dthead
);
123 for (i
= nddates
- 1; i
>= 0; i
--, dtwalk
= SLIST_NEXT(dtwalk
, dt_list
))
124 ddatev
[i
] = &dtwalk
->dt_value
;
130 struct dumpdates
*ddp
;
136 msg("Looking for name %s in dumpdates = %s for level = %c\n",
137 fname
, dumpdates
, level
);
144 * Go find the entry with the same name for a lower increment
148 if (strncmp(fname
, ddp
->dd_name
, sizeof (ddp
->dd_name
)) != 0)
150 if (ddp
->dd_level
>= level
)
152 if (ddp
->dd_ddate
<= spcl
.c_ddate
)
154 spcl
.c_ddate
= ddp
->dd_ddate
;
155 lastlevel
= ddp
->dd_level
;
163 struct dumpdates
*dtwalk
;
170 if ((df
= fopen(dumpdates
, "r+")) == NULL
)
171 quit("cannot rewrite %s: %s\n", dumpdates
, strerror(errno
));
175 free((char *)ddatev
);
179 if (fseek(df
, 0L, 0) < 0)
180 quit("fseek: %s\n", strerror(errno
));
182 ITITERATE(i
, dtwalk
) {
183 if (strncmp(fname
, dtwalk
->dd_name
,
184 sizeof (dtwalk
->dd_name
)) != 0)
186 if (dtwalk
->dd_level
!= level
)
191 * construct the new upper bound;
192 * Enough room has been allocated.
194 dtwalk
= ddatev
[nddates
] =
195 (struct dumpdates
*)calloc(1, sizeof (struct dumpdates
));
198 strncpy(dtwalk
->dd_name
, fname
, sizeof (dtwalk
->dd_name
));
199 dtwalk
->dd_level
= level
;
200 dtwalk
->dd_ddate
= spcl
.c_date
;
202 ITITERATE(i
, dtwalk
) {
203 dumprecout(df
, dtwalk
);
206 quit("%s: %s\n", dumpdates
, strerror(errno
));
207 if (ftruncate(fd
, ftell(df
)))
208 quit("ftruncate (%s): %s\n", dumpdates
, strerror(errno
));
210 msg("level %c dump on %s", level
,
211 spcl
.c_date
== 0 ? "the epoch\n" : ctime(&spcl
.c_date
));
215 dumprecout(FILE *file
, struct dumpdates
*what
)
218 if (fprintf(file
, DUMPOUTFMT
,
221 ctime(&what
->dd_ddate
)) < 0)
222 quit("%s: %s\n", dumpdates
, strerror(errno
));
228 getrecord(FILE *df
, struct dumpdates
*ddatep
)
233 if ( (fgets(tbuf
, sizeof (tbuf
), df
)) != tbuf
)
236 if (makedumpdate(ddatep
, tbuf
) < 0)
237 msg("Unknown intermediate format in %s, line %d\n",
241 msg("getrecord: %s %c %s", ddatep
->dd_name
, ddatep
->dd_level
,
242 ddatep
->dd_ddate
== 0 ? "the epoch\n" : ctime(&ddatep
->dd_ddate
));
248 makedumpdate(struct dumpdates
*ddp
, char *tbuf
)
252 sscanf(tbuf
, DUMPINFMT
, ddp
->dd_name
, &ddp
->dd_level
, un_buf
);
253 ddp
->dd_ddate
= unctime(un_buf
);
254 if (ddp
->dd_ddate
< 0)