[dump.git] / dump / itime.c

/*
 *	Ported to Linux's Second Extended File System as part of the
 *	dump and restore backup suit
 *	Remy Card <card@Linux.EU.Org>, 1994, 1995, 1996
 *
 */

/*-
 * Copyright (c) 1980, 1993
 *	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[] = "@(#)itime.c	8.1 (Berkeley) 6/5/93";
#endif /* not lint */

#include <sys/param.h>
#include <sys/time.h>
#ifdef	__linux__
#include <linux/ext2_fs.h>
#include <bsdcompat.h>
#include <sys/file.h>
#else
#ifdef sunos
#include <sys/vnode.h>

#include <ufs/fsdir.h>
#include <ufs/inode.h>
#include <ufs/fs.h>
#else
#include <ufs/ufs/dinode.h>
#endif
#endif

#include <protocols/dumprestore.h>

#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#ifdef __STDC__
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#endif

#ifdef	__linux__
#include <ext2fs/ext2fs.h>
#endif

#include "dump.h"

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

static	void dumprecout __P((FILE *, struct dumpdates *));
static	int getrecord __P((FILE *, struct dumpdates *));
static	int makedumpdate __P((struct dumpdates *, char *));
static	void readdumptimes __P((FILE *));

void
initdumptimes()
{
	FILE *df;

	if ((df = fopen(dumpdates, "r")) == NULL) {
		if (errno != ENOENT) {
			quit("cannot read %s: %s\n", dumpdates,
			    strerror(errno));
			/* NOTREACHED */
		}
		/*
		 * Dumpdates does not exist, make an empty one.
		 */
		msg("WARNING: no file `%s', making an empty one\n", dumpdates);
		if ((df = fopen(dumpdates, "w")) == NULL) {
			quit("cannot create %s: %s\n", dumpdates,
			    strerror(errno));
			/* NOTREACHED */
		}
		(void) fclose(df);
		if ((df = fopen(dumpdates, "r")) == NULL) {
			quit("cannot read %s even after creating it: %s\n",
			    dumpdates, strerror(errno));
			/* NOTREACHED */
		}
	}
	(void) flock(fileno(df), LOCK_SH);
	readdumptimes(df);
	(void) fclose(df);
}

static 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((unsigned) (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;
#ifdef	__linux__
		if (ddp->dd_ddate <= (time_t)spcl.c_ddate)
#else
		if (ddp->dd_ddate <= spcl.c_ddate)
#endif
			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((char *)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,
#ifdef	__linux__
		spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
#else
		spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
#endif
}

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;

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

	recno = 0;
	if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf)
		return(-1);
	recno++;
	if (makedumpdate(ddatep, tbuf) < 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);
}

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

	(void) sscanf(tbuf, 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
1227625a SP	1	/*
	2	* Ported to Linux's Second Extended File System as part of the
	3	* dump and restore backup suit
	4	* Remy Card <card@Linux.EU.Org>, 1994, 1995, 1996
	5	*
	6	*/
	7
	8	/*-
	9	* Copyright (c) 1980, 1993
	10	* The Regents of the University of California. All rights reserved.
	11	*
	12	* Redistribution and use in source and binary forms, with or without
	13	* modification, are permitted provided that the following conditions
	14	* are met:
	15	* 1. Redistributions of source code must retain the above copyright
	16	* notice, this list of conditions and the following disclaimer.
	17	* 2. Redistributions in binary form must reproduce the above copyright
	18	* notice, this list of conditions and the following disclaimer in the
	19	* documentation and/or other materials provided with the distribution.
	20	* 3. All advertising materials mentioning features or use of this software
	21	* must display the following acknowledgement:
	22	* This product includes software developed by the University of
	23	* California, Berkeley and its contributors.
	24	* 4. Neither the name of the University nor the names of its contributors
	25	* may be used to endorse or promote products derived from this software
	26	* without specific prior written permission.
	27	*
	28	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	29	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	30	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	31	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	32	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	33	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	34	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	35	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	36	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	37	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	38	* SUCH DAMAGE.
	39	*/
	40
	41	#ifndef lint
	42	static char sccsid[] = "@(#)itime.c 8.1 (Berkeley) 6/5/93";
	43	#endif /* not lint */
	44
	45	#include <sys/param.h>
	46	#include <sys/time.h>
	47	#ifdef __linux__
	48	#include <linux/ext2_fs.h>
	49	#include <bsdcompat.h>
	50	#include <sys/file.h>
	51	#else
	52	#ifdef sunos
	53	#include <sys/vnode.h>
	54
	55	#include <ufs/fsdir.h>
	56	#include <ufs/inode.h>
	57	#include <ufs/fs.h>
	58	#else
	59	#include <ufs/ufs/dinode.h>
	60	#endif
	61	#endif
	62
	63	#include <protocols/dumprestore.h>
	64
65	#include <errno.h>
66	#include <fcntl.h>
67	#include <stdio.h>
68	#ifdef __STDC__
69	#include <stdlib.h>
70	#include <string.h>
71	#include <unistd.h>
72	#endif
73
74	#ifdef __linux__
75	#include <ext2fs/ext2fs.h>
76	#endif
77
78	#include "dump.h"
79
80	struct dumpdates **ddatev = 0;
81	int nddates = 0;
82	int ddates_in = 0;
83	struct dumptime *dthead = 0;
84
85	static void dumprecout __P((FILE , struct dumpdates ));
86	static int getrecord __P((FILE , struct dumpdates ));
87	static int makedumpdate __P((struct dumpdates , char ));
88	static void readdumptimes __P((FILE *));
89
90	void
91	initdumptimes()
92	{
93	FILE *df;
94
95	if ((df = fopen(dumpdates, "r")) == NULL) {
96	if (errno != ENOENT) {
97	quit("cannot read %s: %s\n", dumpdates,
98	strerror(errno));
99	/* NOTREACHED */
100	}
101	/*
102	* Dumpdates does not exist, make an empty one.
103	*/
104	msg("WARNING: no file `%s', making an empty one\n", dumpdates);
105	if ((df = fopen(dumpdates, "w")) == NULL) {
106	quit("cannot create %s: %s\n", dumpdates,
107	strerror(errno));
108	/* NOTREACHED */
109	}
110	(void) fclose(df);
111	if ((df = fopen(dumpdates, "r")) == NULL) {
112	quit("cannot read %s even after creating it: %s\n",
113	dumpdates, strerror(errno));
114	/* NOTREACHED */
115	}
116	}
117	(void) flock(fileno(df), LOCK_SH);
118	readdumptimes(df);
119	(void) fclose(df);
120	}
121
122	static void
123	readdumptimes(df)
124	FILE *df;
125	{
126	register int i;
127	register struct dumptime *dtwalk;
128
129	for (;;) {
130	dtwalk = (struct dumptime *)calloc(1, sizeof (struct dumptime));
131	if (getrecord(df, &(dtwalk->dt_value)) < 0)
132	break;
133	nddates++;
134	dtwalk->dt_next = dthead;
135	dthead = dtwalk;
136	}
137
138	ddates_in = 1;
139	/*
140	* arrayify the list, leaving enough room for the additional
141	* record that we may have to add to the ddate structure
142	*/
143	ddatev = (struct dumpdates **)
144	calloc((unsigned) (nddates + 1), sizeof (struct dumpdates *));
145	dtwalk = dthead;
146	for (i = nddates - 1; i >= 0; i--, dtwalk = dtwalk->dt_next)
147	ddatev[i] = &dtwalk->dt_value;
148	}
149
150	void
151	getdumptime()
152	{
153	register struct dumpdates *ddp;
154	register int i;
155	char *fname;
156
157	fname = disk;
158	#ifdef FDEBUG
159	msg("Looking for name %s in dumpdates = %s for level = %c\n",
160	fname, dumpdates, level);
161	#endif
162	spcl.c_ddate = 0;
163	lastlevel = '0';
164
165	initdumptimes();
166	/*
167	* Go find the entry with the same name for a lower increment
168	* and older date
169	*/
170	ITITERATE(i, ddp) {
171	if (strncmp(fname, ddp->dd_name, sizeof (ddp->dd_name)) != 0)
172	continue;
173	if (ddp->dd_level >= level)
174	continue;
175	#ifdef __linux__
176	if (ddp->dd_ddate <= (time_t)spcl.c_ddate)
177	#else
178	if (ddp->dd_ddate <= spcl.c_ddate)
179	#endif
180	continue;
181	spcl.c_ddate = ddp->dd_ddate;
182	lastlevel = ddp->dd_level;
183	}
184	}
185
186	void
187	putdumptime()
188	{
189	FILE *df;
190	register struct dumpdates *dtwalk;
191	register int i;
192	int fd;
193	char *fname;
194
195	if(uflag == 0)
196	return;
197	if ((df = fopen(dumpdates, "r+")) == NULL)
198	quit("cannot rewrite %s: %s\n", dumpdates, strerror(errno));
199	fd = fileno(df);
200	(void) flock(fd, LOCK_EX);
201	fname = disk;
202	free((char *)ddatev);
203	ddatev = 0;
204	nddates = 0;
205	dthead = 0;
206	ddates_in = 0;
207	readdumptimes(df);
208	if (fseek(df, 0L, 0) < 0)
209	quit("fseek: %s\n", strerror(errno));
210	spcl.c_ddate = 0;
211	ITITERATE(i, dtwalk) {
212	if (strncmp(fname, dtwalk->dd_name,
213	sizeof (dtwalk->dd_name)) != 0)
214	continue;
215	if (dtwalk->dd_level != level)
216	continue;
217	goto found;
218	}
219	/*
220	* construct the new upper bound;
221	* Enough room has been allocated.
222	*/
223	dtwalk = ddatev[nddates] =
224	(struct dumpdates *)calloc(1, sizeof (struct dumpdates));
225	nddates += 1;
226	found:
227	(void) strncpy(dtwalk->dd_name, fname, sizeof (dtwalk->dd_name));
228	dtwalk->dd_level = level;
229	dtwalk->dd_ddate = spcl.c_date;
230
231	ITITERATE(i, dtwalk) {
232	dumprecout(df, dtwalk);
233	}
234	if (fflush(df))
235	quit("%s: %s\n", dumpdates, strerror(errno));
236	if (ftruncate(fd, ftell(df)))
237	quit("ftruncate (%s): %s\n", dumpdates, strerror(errno));
238	(void) fclose(df);
239	msg("level %c dump on %s", level,
240	#ifdef __linux__
241	spcl.c_date == 0 ? "the epoch\n" : ctime4(&spcl.c_date));
242	#else
243	spcl.c_date == 0 ? "the epoch\n" : ctime(&spcl.c_date));
244	#endif
245	}
246
247	static void
248	dumprecout(file, what)
249	FILE *file;
250	struct dumpdates *what;
251	{
252
253	if (fprintf(file, DUMPOUTFMT,
254	what->dd_name,
255	what->dd_level,
256	ctime(&what->dd_ddate)) < 0)
257	quit("%s: %s\n", dumpdates, strerror(errno));
258	}
259
260	int recno;
261
262	static int
263	getrecord(df, ddatep)
264	FILE *df;
265	struct dumpdates *ddatep;
266	{
267	char tbuf[BUFSIZ];
268
269	recno = 0;
270	if ( (fgets(tbuf, sizeof (tbuf), df)) != tbuf)
271	return(-1);
272	recno++;
273	if (makedumpdate(ddatep, tbuf) < 0)
274	msg("Unknown intermediate format in %s, line %d\n",
275	dumpdates, recno);
276
277	#ifdef FDEBUG
278	msg("getrecord: %s %c %s", ddatep->dd_name, ddatep->dd_level,
279	ddatep->dd_ddate == 0 ? "the epoch\n" : ctime(&ddatep->dd_ddate));
280	#endif
281	return(0);
282	}
283
284	static int
285	makedumpdate(ddp, tbuf)
286	struct dumpdates *ddp;
287	char *tbuf;
288	{
289	char un_buf[128];
290
291	(void) sscanf(tbuf, DUMPINFMT, ddp->dd_name, &ddp->dd_level, un_buf);
292	ddp->dd_ddate = unctime(un_buf);
293	if (ddp->dd_ddate < 0)
294	return(-1);
295	return(0);
296	}