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/* @(#)dumpdate.c 1.11 05/02/07 Copyright 2003-2005 J. Schilling */
#ifndef lint
static char sccsid[] =
"@(#)dumpdate.c 1.11 05/02/07 Copyright 2003-2005 J. Schilling";
#endif
/*
* Copyright (c) 2003-2005 J. Schilling
*/
/*
* Copyright Jrg Schilling. All rights reserved.
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only.
* See the file CDDL.Schily.txt in this distribution or
* http://opensource.org/licenses/cddl1.php for details.
*/
#include <mconfig.h>
#include <stdio.h>
#include <stdxlib.h>
#include <unixstd.h>
#include <strdefs.h>
#include <errno.h>
#include <utypes.h>
#include <standard.h>
#include <schily.h>
#include "dumpdate.h"
#include "starsubs.h"
/*#define DEBUG*/
LOCAL dumpd_t *dumpdates;
LOCAL dumpd_t **dumptail = &dumpdates;
EXPORT void initdumpdates __PR((char *fname));
EXPORT void writedumpdates __PR((char *fname, int level, int dflags,
struct timeval *date));
LOCAL void outentry __PR((FILE *f, char *name, int level, int dflags,
struct timeval *date));
EXPORT char *dumpdate __PR((struct timeval *date));
LOCAL char *skipwht __PR((char *p));
LOCAL BOOL getentry __PR((char *line));
EXPORT BOOL getdumptime __PR((char *p, struct timeval *tvp));
EXPORT dumpd_t *checkdumpdates __PR((const char *name, int level, int dflags));
LOCAL dumpd_t *_checkdumpdates __PR((const char *name, int level, int dflags));
EXPORT void adddumpdates __PR((const char *name, int level, int dflags,
struct timeval *date,
BOOL useold));
LOCAL dumpd_t *newdumpdates __PR((const char *name, int level, int dflags,
struct timeval *date));
EXPORT void
initdumpdates(fname)
char *fname;
{
FILE *f;
char buf[4096];
int line = 0;
f = fileopen(fname, "r");
if (f == NULL) {
if (geterrno() == ENOENT) {
errmsg("Warning no %s.\n", fname);
return;
}
comerr("Cannot open %s.\n", fname);
}
/*
* XXX Locking ???
*/
while (fgetline(f, buf, sizeof (buf)) >= 0) {
line++;
if (!getentry(buf)) {
if (*skipwht(buf) != '\0') {
errmsgno(EX_BAD,
"Unknown format in '%s' line %d\n",
fname, line);
}
continue;
}
}
fclose(f);
}
EXPORT void
writedumpdates(fname, level, dflags, date)
char *fname;
int level;
int dflags;
struct timeval *date;
{
FILE *f;
dumpd_t *dp;
off_t fsize;
off_t fpos;
f = fileopen(fname, "wc");
if (f == NULL) {
errmsg("Cannot open '%s'.\n", fname);
return;
}
fsize = filesize(f);
for (dp = dumpdates; dp; dp = dp->next) {
outentry(f, dp->name, dp->level, dp->flags, &dp->date);
}
fflush(f);
fpos = filepos(f);
while (fpos++ < fsize)
putc(' ', f);
fclose(f);
error("Dump record level %d%s dump: %s written\n",
level, (dflags & DD_PARTIAL) ? "P":" ",
dumpdate(date));
}
LOCAL void
outentry(f, name, level, dflags, date)
FILE *f;
char *name;
int level;
int dflags;
struct timeval *date;
{
int len;
time_t t = date->tv_sec; /* FreeBSD/MacOS X -> broken tv_sec/time_t */
len = strlen(name);
if ((len % 8) == 0)
len += 8;
len += 7;
len &= ~7;
len = 41 -len;
if (len < 1)
len = 1;
fprintf(f, "%s\t%*s%2d%s %10lld.%6.6lld %s",
name,
len,
"",
level,
(dflags & DD_PARTIAL) ? "P":"",
(Llong)date->tv_sec,
(Llong)date->tv_usec,
ctime(&t));
}
EXPORT char *
dumpdate(date)
struct timeval *date;
{
char *p;
time_t t = date->tv_sec; /* FreeBSD/MacOS X -> broken tv_sec/time_t */
if (date->tv_sec == 0)
return ("the epoch");
p = ctime(&t);
p[24] = '\0';
return (p);
}
LOCAL char *
skipwht(p)
char *p;
{
while (*p && (*p == ' ' || *p == '\t'))
p++;
return (p);
}
LOCAL BOOL
getentry(line)
char *line;
{
char *p;
int level;
int dflags = 0;
struct timeval tdate;
p = line;
do {
p = strchr(++p, '\t');
} while (p && p[0] != '\0' && p[1] != ' ');
if (p == NULL || p[0] == '\0') {
errmsgno(EX_BAD, "Error parsing mount point\n");
return (FALSE);
}
*p++ = '\0';
p = skipwht(p);
p = astoi(p, &level);
if (*p == 'P') {
dflags |= DD_PARTIAL;
p++;
}
if (*p != ' ') {
errmsgno(EX_BAD, "Error parsing dump level\n");
return (FALSE);
}
p = skipwht(p);
if (!getdumptime(p, &tdate))
return (FALSE);
adddumpdates(line, level, dflags, &tdate, FALSE);
return (TRUE);
}
EXPORT BOOL
getdumptime(p, tvp)
char *p;
struct timeval *tvp;
{
Llong date;
Llong dfrac;
p = astollb(p, &date, 10);
if (*p == '.') {
int l;
char *s = ++p;
p = astollb(s, &dfrac, 10);
l = p - s;
if (l > 9) { /* Number too big, limit to nsec */
char *p2 = p;
l = s[9];
s[9] = '\0';
p = astollb(s, &dfrac, 10);
s[9] = l;
l = p - s;
p = p2;
}
while (l < 6) { /* Convert to usecs */
dfrac *= 10;
l++;
}
while (l > 6) { /* Convert to usecs */
dfrac /= 10;
l--;
}
}
if (*p != ' ' && *p != '\0') {
errmsgno(EX_BAD, "Error parsing dump date\n");
return (FALSE);
}
tvp->tv_sec = date;
tvp->tv_usec = dfrac;
return (TRUE);
}
EXPORT dumpd_t *
checkdumpdates(name, level, dflags)
const char *name;
int level;
int dflags;
{
dumpd_t *rp = NULL;
dumpd_t *rp2 = NULL;
rp = _checkdumpdates(name, level, dflags & ~DD_CUMULATIVE);
rp2 = _checkdumpdates(name, level, dflags);
if (rp && rp2 && (rp2->date.tv_sec > rp->date.tv_sec))
return (rp2);
return (rp);
}
LOCAL dumpd_t *
_checkdumpdates(name, level, dflags)
const char *name;
int level;
int dflags;
{
dumpd_t *dp = dumpdates;
dumpd_t *rp = NULL;
for (; dp; dp = dp->next) {
if (!streql(name, dp->name))
continue;
if ((dp->flags & DD_PARTIAL) != (dflags & DD_PARTIAL))
continue;
if ((dflags & DD_CUMULATIVE) && level == dp->level) {
rp = dp;
break;
}
/*
* We are not interested in tardump entries for
* this level or higher, so skip them.
*/
if (level <= dp->level)
continue;
/*
* If we did already find a more recent entry in tardumps
* we consider this one outdated.
*/
if (rp && rp->date.tv_sec > dp->date.tv_sec)
continue;
rp = dp;
}
#ifdef DEBUG
if (rp)
outentry(stderr, rp->name, rp->level, rp->flags, &rp->date);
#endif
return (rp);
}
EXPORT void
adddumpdates(name, level, dflags, date, useold)
const char *name;
int level;
int dflags;
struct timeval *date;
BOOL useold;
{
dumpd_t *dp = dumpdates;
for (; dp; dp = dp->next) {
if (streql(name, dp->name) && level == dp->level &&
(dp->flags & DD_PARTIAL) == (dflags & DD_PARTIAL)) {
if (useold) {
dp->date = *date;
return;
}
errmsgno(EX_BAD,
"Duplicate tardumps entry '%s %d%s %lld'.\n",
dp->name, dp->level,
(dflags & DD_PARTIAL) ? "P":"",
(Llong)dp->date.tv_sec);
if (date->tv_sec == dp->date.tv_sec)
return;
comerrno(EX_BAD, "Timestamps differs - aborting.\n");
}
}
dp = newdumpdates(name, level, dflags, date);
*dumptail = dp;
dumptail = &dp->next;
}
LOCAL dumpd_t *
newdumpdates(name, level, dflags, date)
const char *name;
int level;
int dflags;
struct timeval *date;
{
dumpd_t *dp;
dp = __malloc(sizeof (*dp), "tardumps entry");
dp->next = NULL;
dp->name = __savestr(name);
dp->level = level;
dp->flags = dflags;
dp->date = *date;
return (dp);
}
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