[unix-history] / sbin / dump / dumpitime.c

/*-
 * Copyright (c) 1980 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef lint
static char sccsid[] = "@(#)dumpitime.c	5.7 (Berkeley) 3/7/91";
#endif /* not lint */

#include <sys/param.h>
#include <ufs/dir.h>
#include <ufs/dinode.h>
#include <fcntl.h>
#include <protocols/dumprestore.h>
#include <errno.h>
#include <stdio.h>
#ifdef __STDC__
#include <time.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#endif
#include "dump.h"

struct	dumpdates **ddatev = 0;
int	nddates = 0;
int	ddates_in = 0;
struct	dumptime *dthead = 0;

void	readdumptimes();
int	getrecord();
int	makedumpdate();

static void dumprecout();

void
initdumptimes()
{
	FILE *df;

	if ((df = fopen(dumpdates, "r")) == NULL) {
		if (errno == ENOENT) {
			msg("WARNING: no file `%s'\n", dumpdates);
			return;
		}
		quit("cannot read %s: %s\n", dumpdates, strerror(errno));
		/* NOTREACHED */
	}
	(void) flock(fileno(df), LOCK_SH);
	readdumptimes(df);
	fclose(df);
}

void
readdumptimes(df)
	FILE *df;
{
	register int i;
	register struct	dumptime *dtwalk;

	for (;;) {
		dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
		if (getrecord(df, &(dtwalk->dt_value)) < 0)
			break;
		nddates++;
		dtwalk->dt_next = dthead;
		dthead = dtwalk;
	}

	ddates_in = 1;
	/*
	 *	arrayify the list, leaving enough room for the additional
	 *	record that we may have to add to the ddate structure
	 */
	ddatev = (struct dumpdates **)
		calloc(nddates + 1, sizeof (struct dumpdates *));
	dtwalk = dthead;
	for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
		ddatev[i] = &dtwalk->dt_value;
}

void
getdumptime()
{
	register struct dumpdates *ddp;
	register int i;
	char *fname;

	fname = disk;
#ifdef FDEBUG
	msg("Looking for name %s in dumpdates = %s for level = %c\n",
		fname, dumpdates, level);
#endif
	spcl.c_ddate = 0;
	lastlevel = '0';

	initdumptimes();
	/*
	 *	Go find the entry with the same name for a lower increment
	 *	and older date
	 */
	ITITERATE(i, ddp) {
		if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
			continue;
		if (ddp->dd_level >= level)
			continue;
		if (ddp->dd_ddate <= spcl.c_ddate)
			continue;
		spcl.c_ddate = ddp->dd_ddate;
		lastlevel = ddp->dd_level;
	}
}

void
putdumptime()
{
	FILE *df;
	register struct dumpdates *dtwalk;
	register int i;
	int fd;
	char *fname;

	if(uflag == 0)
		return;
	if ((df = fopen(dumpdates, "r+")) == NULL)
		quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
	fd = fileno(df);
	(void) flock(fd, LOCK_EX);
	fname = disk;
	free(ddatev);
	ddatev = 0;
	nddates = 0;
	dthead = 0;
	ddates_in = 0;
	readdumptimes(df);
	if (fseek(df, 0L, 0) < 0)
		quit("fseek: %s\n", strerror(errno));
	spcl.c_ddate = 0;
	ITITERATE(i, dtwalk) {
		if (strncmp(fname, dtwalk->dd_name,
				sizeof (dtwalk->dd_name)) != 0)
			continue;
		if (dtwalk->dd_level != level)
			continue;
		goto found;
	}
	/*
	 *	construct the new upper bound;
	 *	Enough room has been allocated.
	 */
	dtwalk = ddatev[nddates] =
		(struct dumpdates *)calloc(1, sizeof(struct dumpdates));
	nddates += 1;
  found:
	(void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
	dtwalk->dd_level = level;
	dtwalk->dd_ddate = spcl.c_date;

	ITITERATE(i, dtwalk) {
		dumprecout(df, dtwalk);
	}
	if (fflush(df))
		quit("%s: %s\n", dumpdates, strerror(errno));
	if (ftruncate(fd, ftell(df)))
		quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
	(void) fclose(df);
	msg("level %c dump on %s", level,
		spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
}

static void
dumprecout(file, what)
	FILE *file;
	struct dumpdates *what;
{

	if (fprintf(file, DUMPOUTFMT,
		    what->dd_name,
		    what->dd_level,
		    ctime(&what->dd_ddate)) < 0)
		quit("%s: %s\n", dumpdates, strerror(errno));
}

int	recno;
int
getrecord(df, ddatep)
	FILE *df;
	struct dumpdates *ddatep;
{
	char buf[BUFSIZ];

	recno = 0;
	if ( (fgets(buf, BUFSIZ, df)) != buf)
		return(-1);
	recno++;
	if (makedumpdate(ddatep, buf) < 0)
		msg("Unknown intermediate format in %s, line %d\n",
			dumpdates, recno);

#ifdef FDEBUG
	msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
	    ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
#endif
	return(0);
}

time_t	unctime();

int
makedumpdate(ddp, buf)
	struct dumpdates *ddp;
	char *buf;
{
	char un_buf[128];

	sscanf(buf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
	ddp->dd_ddate = unctime(un_buf);
	if (ddp->dd_ddate < 0)
		return(-1);
	return(0);
}
Commit	Line	Data
15637ed4 RG	1	/*-
	2	* Copyright (c) 1980 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	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.
	20	*
	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
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#ifndef lint
	35	static char sccsid[] = "@(#)dumpitime.c 5.7 (Berkeley) 3/7/91";
	36	#endif /* not lint */
	37
	38	#include <sys/param.h>
	39	#include <ufs/dir.h>
	40	#include <ufs/dinode.h>
	41	#include <fcntl.h>
	42	#include <protocols/dumprestore.h>
	43	#include <errno.h>
	44	#include <stdio.h>
	45	#ifdef __STDC__
	46	#include <time.h>
	47	#include <unistd.h>
	48	#include <stdlib.h>
	49	#include <string.h>
	50	#endif
	51	#include "dump.h"
	52
	53	struct dumpdates **ddatev = 0;
	54	int nddates = 0;
	55	int ddates_in = 0;
	56	struct dumptime *dthead = 0;
	57
	58	void readdumptimes();
	59	int getrecord();
	60	int makedumpdate();
	61
	62	static void dumprecout();
	63
	64	void
65	initdumptimes()
66	{
67	FILE *df;
68
69	if ((df = fopen(dumpdates, "r")) == NULL) {
70	if (errno == ENOENT) {
71	msg("WARNING: no file `%s'\n", dumpdates);
72	return;
73	}
74	quit("cannot read %s: %s\n", dumpdates, strerror(errno));
75	/* NOTREACHED */
76	}
77	(void) flock(fileno(df), LOCK_SH);
78	readdumptimes(df);
79	fclose(df);
80	}
81
82	void
83	readdumptimes(df)
84	FILE *df;
85	{
86	register int i;
87	register struct dumptime *dtwalk;
88
89	for (;;) {
90	dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
91	if (getrecord(df, &(dtwalk->dt_value)) < 0)
92	break;
93	nddates++;
94	dtwalk->dt_next = dthead;
95	dthead = dtwalk;
96	}
97
98	ddates_in = 1;
99	/*
100	* arrayify the list, leaving enough room for the additional
101	* record that we may have to add to the ddate structure
102	*/
103	ddatev = (struct dumpdates **)
104	calloc(nddates + 1, sizeof (struct dumpdates *));
105	dtwalk = dthead;
106	for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
107	ddatev[i] = &dtwalk->dt_value;
108	}
109
110	void
111	getdumptime()
112	{
113	register struct dumpdates *ddp;
114	register int i;
115	char *fname;
116
117	fname = disk;
118	#ifdef FDEBUG
119	msg("Looking for name %s in dumpdates = %s for level = %c\n",
120	fname, dumpdates, level);
121	#endif
122	spcl.c_ddate = 0;
123	lastlevel = '0';
124
125	initdumptimes();
126	/*
127	* Go find the entry with the same name for a lower increment
128	* and older date
129	*/
130	ITITERATE(i, ddp) {
131	if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
132	continue;
133	if (ddp->dd_level >= level)
134	continue;
135	if (ddp->dd_ddate <= spcl.c_ddate)
136	continue;
137	spcl.c_ddate = ddp->dd_ddate;
138	lastlevel = ddp->dd_level;
139	}
140	}
141
142	void
143	putdumptime()
144	{
145	FILE *df;
146	register struct dumpdates *dtwalk;
147	register int i;
148	int fd;
149	char *fname;
150
151	if(uflag == 0)
152	return;
153	if ((df = fopen(dumpdates, "r+")) == NULL)
154	quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
155	fd = fileno(df);
156	(void) flock(fd, LOCK_EX);
157	fname = disk;
158	free(ddatev);
159	ddatev = 0;
160	nddates = 0;
161	dthead = 0;
162	ddates_in = 0;
163	readdumptimes(df);
164	if (fseek(df, 0L, 0) < 0)
165	quit("fseek: %s\n", strerror(errno));
166	spcl.c_ddate = 0;
167	ITITERATE(i, dtwalk) {
168	if (strncmp(fname, dtwalk->dd_name,
169	sizeof (dtwalk->dd_name)) != 0)
170	continue;
171	if (dtwalk->dd_level != level)
172	continue;
173	goto found;
174	}
175	/*
176	* construct the new upper bound;
177	* Enough room has been allocated.
178	*/
179	dtwalk = ddatev[nddates] =
180	(struct dumpdates *)calloc(1, sizeof(struct dumpdates));
181	nddates += 1;
182	found:
183	(void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
184	dtwalk->dd_level = level;
185	dtwalk->dd_ddate = spcl.c_date;
186
187	ITITERATE(i, dtwalk) {
188	dumprecout(df, dtwalk);
189	}
190	if (fflush(df))
191	quit("%s: %s\n", dumpdates, strerror(errno));
192	if (ftruncate(fd, ftell(df)))
193	quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
194	(void) fclose(df);
195	msg("level %c dump on %s", level,
196	spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
197	}
198
199	static void
200	dumprecout(file, what)
201	FILE *file;
202	struct dumpdates *what;
203	{
204
205	if (fprintf(file, DUMPOUTFMT,
206	what->dd_name,
207	what->dd_level,
208	ctime(&what->dd_ddate)) < 0)
209	quit("%s: %s\n", dumpdates, strerror(errno));
210	}
211
212	int recno;
213	int
214	getrecord(df, ddatep)
215	FILE *df;
216	struct dumpdates *ddatep;
217	{
218	char buf[BUFSIZ];
219
220	recno = 0;
221	if ( (fgets(buf, BUFSIZ, df)) != buf)
222	return(-1);
223	recno++;
224	if (makedumpdate(ddatep, buf) < 0)
225	msg("Unknown intermediate format in %s, line %d\n",
226	dumpdates, recno);
227
228	#ifdef FDEBUG
229	msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
230	ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
231	#endif
232	return(0);
233	}
234
235	time_t unctime();
236
237	int
238	makedumpdate(ddp, buf)
239	struct dumpdates *ddp;
240	char *buf;
241	{
242	char un_buf[128];
243
244	sscanf(buf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
245	ddp->dd_ddate = unctime(un_buf);
246	if (ddp->dd_ddate < 0)
247	return(-1);
248	return(0);
249	}