[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";
static char rcsid[] = "$Header: /b/source/CVS/src/sbin/dump/dumpitime.c,v 1.3 1993/03/23 00:27:05 cgd Exp $";
#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";
b16a1b0e	36	static char rcsid[] = "$Header: /b/source/CVS/src/sbin/dump/dumpitime.c,v 1.3 1993/03/23 00:27:05 cgd Exp $";
15637ed4 RG	37	#endif /* not lint */
	38
	39	#include <sys/param.h>
	40	#include <ufs/dir.h>
	41	#include <ufs/dinode.h>
	42	#include <fcntl.h>
	43	#include <protocols/dumprestore.h>
	44	#include <errno.h>
	45	#include <stdio.h>
	46	#ifdef __STDC__
	47	#include <time.h>
	48	#include <unistd.h>
	49	#include <stdlib.h>
	50	#include <string.h>
	51	#endif
	52	#include "dump.h"
	53
	54	struct dumpdates **ddatev = 0;
	55	int nddates = 0;
	56	int ddates_in = 0;
	57	struct dumptime *dthead = 0;
	58
	59	void readdumptimes();
	60	int getrecord();
	61	int makedumpdate();
	62
	63	static void dumprecout();
	64
	65	void
	66	initdumptimes()
	67	{
	68	FILE *df;
	69
	70	if ((df = fopen(dumpdates, "r")) == NULL) {
	71	if (errno == ENOENT) {
	72	msg("WARNING: no file `%s'\n", dumpdates);
	73	return;
	74	}
	75	quit("cannot read %s: %s\n", dumpdates, strerror(errno));
	76	/* NOTREACHED */
	77	}
	78	(void) flock(fileno(df), LOCK_SH);
	79	readdumptimes(df);
	80	fclose(df);
	81	}
	82
	83	void
	84	readdumptimes(df)
	85	FILE *df;
	86	{
	87	register int i;
	88	register struct dumptime *dtwalk;
	89
	90	for (;;) {
	91	dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
	92	if (getrecord(df, &(dtwalk->dt_value)) < 0)
	93	break;
	94	nddates++;
	95	dtwalk->dt_next = dthead;
	96	dthead = dtwalk;
	97	}
	98
	99	ddates_in = 1;
	100	/*
101	* arrayify the list, leaving enough room for the additional
102	* record that we may have to add to the ddate structure
103	*/
104	ddatev = (struct dumpdates **)
105	calloc(nddates + 1, sizeof (struct dumpdates *));
106	dtwalk = dthead;
107	for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
108	ddatev[i] = &dtwalk->dt_value;
109	}
110
111	void
112	getdumptime()
113	{
114	register struct dumpdates *ddp;
115	register int i;
116	char *fname;
117
118	fname = disk;
119	#ifdef FDEBUG
120	msg("Looking for name %s in dumpdates = %s for level = %c\n",
121	fname, dumpdates, level);
122	#endif
123	spcl.c_ddate = 0;
124	lastlevel = '0';
125
126	initdumptimes();
127	/*
128	* Go find the entry with the same name for a lower increment
129	* and older date
130	*/
131	ITITERATE(i, ddp) {
132	if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
133	continue;
134	if (ddp->dd_level >= level)
135	continue;
136	if (ddp->dd_ddate <= spcl.c_ddate)
137	continue;
138	spcl.c_ddate = ddp->dd_ddate;
139	lastlevel = ddp->dd_level;
140	}
141	}
142
143	void
144	putdumptime()
145	{
146	FILE *df;
147	register struct dumpdates *dtwalk;
148	register int i;
149	int fd;
150	char *fname;
151
152	if(uflag == 0)
153	return;
154	if ((df = fopen(dumpdates, "r+")) == NULL)
155	quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
156	fd = fileno(df);
157	(void) flock(fd, LOCK_EX);
158	fname = disk;
159	free(ddatev);
160	ddatev = 0;
161	nddates = 0;
162	dthead = 0;
163	ddates_in = 0;
164	readdumptimes(df);
165	if (fseek(df, 0L, 0) < 0)
166	quit("fseek: %s\n", strerror(errno));
167	spcl.c_ddate = 0;
168	ITITERATE(i, dtwalk) {
169	if (strncmp(fname, dtwalk->dd_name,
170	sizeof (dtwalk->dd_name)) != 0)
171	continue;
172	if (dtwalk->dd_level != level)
173	continue;
174	goto found;
175	}
176	/*
177	* construct the new upper bound;
178	* Enough room has been allocated.
179	*/
180	dtwalk = ddatev[nddates] =
181	(struct dumpdates *)calloc(1, sizeof(struct dumpdates));
182	nddates += 1;
183	found:
184	(void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
185	dtwalk->dd_level = level;
186	dtwalk->dd_ddate = spcl.c_date;
187
188	ITITERATE(i, dtwalk) {
189	dumprecout(df, dtwalk);
190	}
191	if (fflush(df))
192	quit("%s: %s\n", dumpdates, strerror(errno));
193	if (ftruncate(fd, ftell(df)))
194	quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
195	(void) fclose(df);
196	msg("level %c dump on %s", level,
197	spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
198	}
199
200	static void
201	dumprecout(file, what)
202	FILE *file;
203	struct dumpdates *what;
204	{
205
206	if (fprintf(file, DUMPOUTFMT,
207	what->dd_name,
208	what->dd_level,
209	ctime(&what->dd_ddate)) < 0)
210	quit("%s: %s\n", dumpdates, strerror(errno));
211	}
212
213	int recno;
214	int
215	getrecord(df, ddatep)
216	FILE *df;
217	struct dumpdates *ddatep;
218	{
219	char buf[BUFSIZ];
220
221	recno = 0;
222	if ( (fgets(buf, BUFSIZ, df)) != buf)
223	return(-1);
224	recno++;
225	if (makedumpdate(ddatep, buf) < 0)
226	msg("Unknown intermediate format in %s, line %d\n",
227	dumpdates, recno);
228
229	#ifdef FDEBUG
230	msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
231	ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
232	#endif
233	return(0);
234	}
235
236	time_t unctime();
237
238	int
239	makedumpdate(ddp, buf)
240	struct dumpdates *ddp;
241	char *buf;
242	{
243	char un_buf[128];
244
245	sscanf(buf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
246	ddp->dd_ddate = unctime(un_buf);
247	if (ddp->dd_ddate < 0)
248	return(-1);
249	return(0);
250	}