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
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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.
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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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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 1.3 2003/08/08 04:18:37 dillon Exp $
38 #include <sys/param.h>
39 #include <sys/queue.h>
42 #include <sys/vnode.h>
44 #include <ufs/fsdir.h>
45 #include <ufs/inode.h>
48 #include <vfs/ufs/dinode.h>
51 #include <protocols/dumprestore.h>
64 struct dumpdates dt_value;
65 SLIST_ENTRY(dumptime) dt_list;
67 SLIST_HEAD(dthead, dumptime) dthead = SLIST_HEAD_INITIALIZER(dthead);
68 struct dumpdates **ddatev = 0;
72 static void dumprecout __P((FILE *, struct dumpdates *));
73 static int getrecord __P((FILE *, struct dumpdates *));
74 static int makedumpdate __P((struct dumpdates *, char *));
75 static void readdumptimes __P((FILE *));
82 if ((df = fopen(dumpdates, "r")) == NULL) {
83 if (errno != ENOENT) {
84 msg("WARNING: cannot read %s: %s\n", dumpdates,
89 * Dumpdates does not exist, make an empty one.
91 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
92 if ((df = fopen(dumpdates, "w")) == NULL) {
93 msg("WARNING: cannot create %s: %s\n", dumpdates,
98 if ((df = fopen(dumpdates, "r")) == NULL) {
99 quit("cannot read %s even after creating it: %s\n",
100 dumpdates, strerror(errno));
104 (void) flock(fileno(df), LOCK_SH);
114 register struct dumptime *dtwalk;
117 dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
118 if (getrecord(df, &(dtwalk->dt_value)) < 0)
121 SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list);
126 * arrayify the list, leaving enough room for the additional
127 * record that we may have to add to the ddate structure
129 ddatev = (struct dumpdates **)
130 calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
131 dtwalk = SLIST_FIRST(&dthead);
132 for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list))
133 ddatev[i] = &dtwalk->dt_value;
139 register struct dumpdates *ddp;
145 msg("Looking for name %s in dumpdates = %s for level = %c\n",
146 fname, dumpdates, level);
153 * Go find the entry with the same name for a lower increment
157 if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
159 if (ddp->dd_level >= level)
161 if (ddp->dd_ddate <= spcl.c_ddate)
163 spcl.c_ddate = ddp->dd_ddate;
164 lastlevel = ddp->dd_level;
172 register struct dumpdates *dtwalk;
179 if ((df = fopen(dumpdates, "r+")) == NULL)
180 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
182 (void) flock(fd, LOCK_EX);
184 free((char *)ddatev);
189 if (fseek(df, 0L, 0) < 0)
190 quit("fseek: %s\n", strerror(errno));
192 ITITERATE(i, dtwalk) {
193 if (strncmp(fname, dtwalk->dd_name,
194 sizeof (dtwalk->dd_name)) != 0)
196 if (dtwalk->dd_level != level)
201 * construct the new upper bound;
202 * Enough room has been allocated.
204 dtwalk = ddatev[nddates] =
205 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
208 (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
209 dtwalk->dd_level = level;
210 dtwalk->dd_ddate = spcl.c_date;
212 ITITERATE(i, dtwalk) {
213 dumprecout(df, dtwalk);
216 quit("%s: %s\n", dumpdates, strerror(errno));
217 if (ftruncate(fd, ftell(df)))
218 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
220 msg("level %c dump on %s", level,
221 spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
225 dumprecout(file, what)
227 struct dumpdates *what;
230 if (fprintf(file, DUMPOUTFMT,
233 ctime(&what->dd_ddate)) < 0)
234 quit("%s: %s\n", dumpdates, strerror(errno));
240 getrecord(df, ddatep)
242 struct dumpdates *ddatep;
247 if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf)
250 if (makedumpdate(ddatep, tbuf) < 0)
251 msg("Unknown intermediate format in %s, line %d\n",
255 msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
256 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
262 makedumpdate(ddp, tbuf)
263 struct dumpdates *ddp;
268 (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
269 ddp->dd_ddate = unctime(un_buf);
270 if (ddp->dd_ddate < 0)