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/*
* utils for pmlogextract
*
* Copyright (c) 1997-2002 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "pmlogreduce.h"
/*
* raw read of next log record - largely stolen from __pmLogRead in libpcp
*/
int
_pmLogGet(__pmLogCtl *lcp, int vol, __pmPDU **pb)
{
int head;
int tail;
int sts;
long offset;
char *p;
__pmPDU *lpb;
FILE *f;
if (vol == PM_LOG_VOL_META)
f = lcp->l_mdfp;
else
f = lcp->l_mfp;
offset = ftell(f);
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG) {
fprintf(stderr, "_pmLogGet: fd=%d vol=%d posn=%ld ",
fileno(f), vol, offset);
}
#endif
again:
sts = (int)fread(&head, 1, sizeof(head), f);
if (sts != sizeof(head)) {
if (sts == 0) {
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG)
fprintf(stderr, "AFTER end\n");
#endif
fseek(f, offset, SEEK_SET);
if (vol != PM_LOG_VOL_META) {
if (lcp->l_curvol < lcp->l_maxvol) {
if (__pmLogChangeVol(lcp, lcp->l_curvol+1) == 0) {
f = lcp->l_mfp;
goto again;
}
}
}
return PM_ERR_EOL;
}
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG)
fprintf(stderr, "Error: hdr fread=%d %s\n", sts, osstrerror());
#endif
if (sts > 0)
return PM_ERR_LOGREC;
else
return -oserror();
}
if ((lpb = (__pmPDU *)malloc(ntohl(head))) == NULL) {
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG)
fprintf(stderr, "Error: _pmLogGet:(%d) %s\n",
(int)ntohl(head), osstrerror());
#endif
fseek(f, offset, SEEK_SET);
return -oserror();
}
lpb[0] = head;
if ((sts = (int)fread(&lpb[1], 1, ntohl(head) - sizeof(head), f)) != ntohl(head) - sizeof(head)) {
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG)
fprintf(stderr, "Error: data fread=%d %s\n", sts, osstrerror());
#endif
if (sts == 0) {
fseek(f, offset, SEEK_SET);
free(lpb);
return PM_ERR_EOL;
}
else if (sts > 0) {
free(lpb);
return PM_ERR_LOGREC;
}
else {
int e = -oserror();
free(lpb);
return e;
}
}
p = (char *)lpb;
memcpy(&tail, &p[ntohl(head) - sizeof(head)], sizeof(head));
if (head != tail) {
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG)
fprintf(stderr, "Error: head-tail mismatch (%d-%d)\n",
(int)ntohl(head), (int)ntohl(tail));
#endif
return PM_ERR_LOGREC;
}
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG) {
if (vol != PM_LOG_VOL_META || ntohl(lpb[1]) == TYPE_INDOM) {
fprintf(stderr, "@");
if (sts >= 0) {
struct timeval stamp;
__pmTimeval *tvp = (__pmTimeval *)&lpb[vol == PM_LOG_VOL_META ? 2 : 1];
stamp.tv_sec = ntohl(tvp->tv_sec);
stamp.tv_usec = ntohl(tvp->tv_usec);
__pmPrintStamp(stderr, &stamp);
}
else
fprintf(stderr, "unknown time");
}
fprintf(stderr, " len=%d (incl head+tail)\n", (int)ntohl(head));
}
#endif
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_PDU) {
int i, j;
struct timeval stamp;
__pmTimeval *tvp = (__pmTimeval *)&lpb[vol == PM_LOG_VOL_META ? 2 : 1];
fprintf(stderr, "_pmLogGet");
if (vol != PM_LOG_VOL_META || ntohl(lpb[1]) == TYPE_INDOM) {
fprintf(stderr, " timestamp=");
stamp.tv_sec = ntohl(tvp->tv_sec);
stamp.tv_usec = ntohl(tvp->tv_usec);
__pmPrintStamp(stderr, &stamp);
}
fprintf(stderr, " " PRINTF_P_PFX "%p ... " PRINTF_P_PFX "%p", lpb, &lpb[ntohl(head)/sizeof(__pmPDU) - 1]);
fputc('\n', stderr);
fprintf(stderr, "%03d: ", 0);
for (j = 0, i = 0; j < ntohl(head)/sizeof(__pmPDU); j++) {
if (i == 8) {
fprintf(stderr, "\n%03d: ", j);
i = 0;
}
fprintf(stderr, "0x%x ", lpb[j]);
i++;
}
fputc('\n', stderr);
}
#endif
*pb = lpb;
return 0;
}
int
_pmLogPut(FILE *f, __pmPDU *pb)
{
int rlen = ntohl(pb[0]);
int sts;
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG) {
fprintf(stderr, "_pmLogPut: fd=%d rlen=%d\n",
fileno(f), rlen);
}
#endif
if ((sts = (int)fwrite(pb, 1, rlen, f)) != rlen) {
#ifdef PCP_DEBUG
if (pmDebug & DBG_TRACE_LOG)
fprintf(stderr, "_pmLogPut: fwrite=%d %s\n", sts, osstrerror());
#endif
return -oserror();
}
return 0;
}
/*
* construct new external label, and check label records from
* input archives
*/
void
newlabel(void)
{
__pmLogLabel *lp = &logctl.l_label;
/* check version number */
if ((ilabel.ll_magic & 0xff) != PM_LOG_VERS02) {
fprintf(stderr,"%s: Error: version number %d (not %d as expected) in archive (%s)\n",
pmProgname, ilabel.ll_magic & 0xff, PM_LOG_VERS02, iname);
exit(1);
}
/* copy magic number, host and timezone, use our pid */
lp->ill_magic = ilabel.ll_magic;
lp->ill_pid = (int)getpid();
strncpy(lp->ill_hostname, ilabel.ll_hostname, PM_LOG_MAXHOSTLEN);
lp->ill_hostname[PM_LOG_MAXHOSTLEN-1] = '\0';
strncpy(lp->ill_tz, ilabel.ll_tz, PM_TZ_MAXLEN);
lp->ill_tz[PM_TZ_MAXLEN-1] = '\0';
}
/*
* write label records into all files of the output archive
*/
void
writelabel(void)
{
logctl.l_label.ill_vol = 0;
__pmLogWriteLabel(logctl.l_mfp, &logctl.l_label);
logctl.l_label.ill_vol = PM_LOG_VOL_TI;
__pmLogWriteLabel(logctl.l_tifp, &logctl.l_label);
logctl.l_label.ill_vol = PM_LOG_VOL_META;
__pmLogWriteLabel(logctl.l_mdfp, &logctl.l_label);
}
/*
* switch output volumes
*/
void
newvolume(char *base, __pmTimeval *tvp)
{
FILE *newfp;
int nextvol = logctl.l_curvol + 1;
struct timeval stamp;
if ((newfp = __pmLogNewFile(base, nextvol)) != NULL) {
fclose(logctl.l_mfp);
logctl.l_mfp = newfp;
logctl.l_label.ill_vol = logctl.l_curvol = nextvol;
__pmLogWriteLabel(logctl.l_mfp, &logctl.l_label);
fflush(logctl.l_mfp);
stamp.tv_sec = tvp->tv_sec;
stamp.tv_usec = tvp->tv_usec;
fprintf(stderr, "%s: New log volume %d, at ",
pmProgname, nextvol);
__pmPrintStamp(stderr, &stamp);
fputc('\n', stderr);
return;
}
else {
fprintf(stderr, "%s: Error: volume %d: %s\n",
pmProgname, nextvol, pmErrStr(-oserror()));
exit(1);
}
}
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