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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 static char sccsid[] = "@(#)itime.c 8.1 (Berkeley) 6/5/93";
34 static const char rcsid[] =
38 #include <sys/param.h>
39 #include <sys/queue.h>
41 #include <ufs/ufs/dinode.h>
43 #include <protocols/dumprestore.h>
57 struct dumpdates dt_value;
58 SLIST_ENTRY(dumptime) dt_list;
60 SLIST_HEAD(dthead, dumptime) dthead = SLIST_HEAD_INITIALIZER(dthead);
61 struct dumpdates **ddatev = 0;
64 static void dumprecout(FILE *, const struct dumpdates *);
65 static int getrecord(FILE *, struct dumpdates *);
66 static int makedumpdate(struct dumpdates *, const char *);
67 static void readdumptimes(FILE *);
74 if ((df = fopen(dumpdates, "r")) == NULL) {
75 if (errno != ENOENT) {
76 msg("WARNING: cannot read %s: %s\n", dumpdates,
81 * Dumpdates does not exist, make an empty one.
83 msg("WARNING: no file `%s', making an empty one\n", dumpdates);
84 if ((df = fopen(dumpdates, "w")) == NULL) {
85 msg("WARNING: cannot create %s: %s\n", dumpdates,
90 if ((df = fopen(dumpdates, "r")) == NULL) {
91 quit("cannot read %s even after creating it: %s\n",
92 dumpdates, strerror(errno));
96 (void) flock(fileno(df), LOCK_SH);
102 readdumptimes(FILE *df)
105 struct dumptime *dtwalk;
108 dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
109 if (getrecord(df, &(dtwalk->dt_value)) < 0) {
114 SLIST_INSERT_HEAD(&dthead, dtwalk, dt_list);
118 * arrayify the list, leaving enough room for the additional
119 * record that we may have to add to the ddate structure
121 ddatev = (struct dumpdates **)
122 calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
123 dtwalk = SLIST_FIRST(&dthead);
124 for (i = nddates - 1; i >= 0; i--, dtwalk = SLIST_NEXT(dtwalk, dt_list))
125 ddatev[i] = &dtwalk->dt_value;
131 struct dumpdates *ddp;
137 msg("Looking for name %s in dumpdates = %s for level = %d\n",
138 fname, dumpdates, level);
145 * Go find the entry with the same name for a lower increment
149 if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
151 if (ddp->dd_level >= level)
153 if (ddp->dd_ddate <= _time64_to_time(spcl.c_ddate))
155 spcl.c_ddate = _time_to_time64(ddp->dd_ddate);
156 lastlevel = ddp->dd_level;
164 struct dumpdates *dtwalk;
172 if ((df = fopen(dumpdates, "r+")) == NULL)
173 quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
175 (void) flock(fd, LOCK_EX);
177 free((char *)ddatev);
181 if (fseek(df, 0L, 0) < 0)
182 quit("fseek: %s\n", strerror(errno));
184 ITITERATE(i, dtwalk) {
185 if (strncmp(fname, dtwalk->dd_name,
186 sizeof (dtwalk->dd_name)) != 0)
188 if (dtwalk->dd_level != level)
193 * construct the new upper bound;
194 * Enough room has been allocated.
196 dtwalk = ddatev[nddates] =
197 (struct dumpdates *)calloc(1, sizeof (struct dumpdates));
200 (void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
201 dtwalk->dd_level = level;
202 dtwalk->dd_ddate = _time64_to_time(spcl.c_date);
204 ITITERATE(i, dtwalk) {
205 dumprecout(df, dtwalk);
208 quit("%s: %s\n", dumpdates, strerror(errno));
209 if (ftruncate(fd, ftell(df)))
210 quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
212 if (spcl.c_date == 0) {
213 tmsg = "the epoch\n";
215 time_t t = _time64_to_time(spcl.c_date);
218 msg("level %d dump on %s", level, tmsg);
222 dumprecout(FILE *file, const struct dumpdates *what)
225 if (strlen(what->dd_name) > DUMPFMTLEN)
226 quit("Name '%s' exceeds DUMPFMTLEN (%d) bytes\n",
227 what->dd_name, DUMPFMTLEN);
228 if (fprintf(file, DUMPOUTFMT, DUMPFMTLEN, what->dd_name,
229 what->dd_level, ctime(&what->dd_ddate)) < 0)
230 quit("%s: %s\n", dumpdates, strerror(errno));
236 getrecord(FILE *df, struct dumpdates *ddatep)
241 if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf)
244 if (makedumpdate(ddatep, tbuf) < 0)
245 msg("Unknown intermediate format in %s, line %d\n",
249 msg("getrecord: %s %d %s", ddatep->dd_name, ddatep->dd_level,
250 ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
256 makedumpdate(struct dumpdates *ddp, const char *tbuf)
260 (void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
261 ddp->dd_ddate = unctime(un_buf);
262 if (ddp->dd_ddate < 0)