2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
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15 * This product includes software developed by the University of
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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 1.11 2006/10/21 04:10:02 pavalos 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((const time_t *)&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)