stats.c
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上传日期:2007-01-04
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文件大小:4k
- /*
- * Copyright (c) 1998, 1999 Sendmail, Inc. and its suppliers.
- * All rights reserved.
- * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * By using this file, you agree to the terms and conditions set
- * forth in the LICENSE file which can be found at the top level of
- * the sendmail distribution.
- *
- */
- #ifndef lint
- static char id[] = "@(#)$Id: stats.c,v 8.36 1999/12/06 21:17:02 ca Exp $";
- #endif /* ! lint */
- #include <sendmail.h>
- #include <sendmail/mailstats.h>
- static struct statistics Stat;
- static bool GotStats = FALSE; /* set when we have stats to merge */
- #define ONE_K 1000 /* one thousand (twenty-four?) */
- #define KBYTES(x) (((x) + (ONE_K - 1)) / ONE_K)
- /*
- ** MARKSTATS -- mark statistics
- **
- ** Parameters:
- ** e -- the envelope.
- ** to -- to address.
- ** reject -- whether this is a rejection.
- **
- ** Returns:
- ** none.
- **
- ** Side Effects:
- ** changes static Stat structure
- */
- void
- markstats(e, to, reject)
- register ENVELOPE *e;
- register ADDRESS *to;
- bool reject;
- {
- if (reject)
- {
- if (e->e_from.q_mailer != NULL)
- {
- if (bitset(EF_DISCARD, e->e_flags))
- Stat.stat_nd[e->e_from.q_mailer->m_mno]++;
- else
- Stat.stat_nr[e->e_from.q_mailer->m_mno]++;
- }
- Stat.stat_cr++;
- }
- else if (to == NULL)
- {
- Stat.stat_cf++;
- if (e->e_from.q_mailer != NULL)
- {
- Stat.stat_nf[e->e_from.q_mailer->m_mno]++;
- Stat.stat_bf[e->e_from.q_mailer->m_mno] +=
- KBYTES(e->e_msgsize);
- }
- }
- else
- {
- Stat.stat_ct++;
- Stat.stat_nt[to->q_mailer->m_mno]++;
- Stat.stat_bt[to->q_mailer->m_mno] += KBYTES(e->e_msgsize);
- }
- GotStats = TRUE;
- }
- /*
- ** CLEARSTATS -- clear statistics structure
- **
- ** Parameters:
- ** none.
- **
- ** Returns:
- ** none.
- **
- ** Side Effects:
- ** clears the Stat structure.
- */
- void
- clearstats()
- {
- /* clear the structure to avoid future disappointment */
- memset(&Stat, ' ', sizeof Stat);
- GotStats = FALSE;
- }
- /*
- ** POSTSTATS -- post statistics in the statistics file
- **
- ** Parameters:
- ** sfile -- the name of the statistics file.
- **
- ** Returns:
- ** none.
- **
- ** Side Effects:
- ** merges the Stat structure with the sfile file.
- */
- void
- poststats(sfile)
- char *sfile;
- {
- register int fd;
- long sff = SFF_REGONLY|SFF_OPENASROOT;
- struct statistics stats;
- extern off_t lseek();
- if (sfile == NULL || !GotStats)
- return;
- (void) time(&Stat.stat_itime);
- Stat.stat_size = sizeof Stat;
- Stat.stat_magic = STAT_MAGIC;
- Stat.stat_version = STAT_VERSION;
- if (!bitnset(DBS_WRITESTATSTOSYMLINK, DontBlameSendmail))
- sff |= SFF_NOSLINK;
- if (!bitnset(DBS_WRITESTATSTOHARDLINK, DontBlameSendmail))
- sff |= SFF_NOHLINK;
- fd = safeopen(sfile, O_RDWR, 0644, sff);
- if (fd < 0)
- {
- if (LogLevel > 12)
- sm_syslog(LOG_INFO, NOQID, "poststats: %s: %s",
- sfile, errstring(errno));
- errno = 0;
- return;
- }
- if (read(fd, (char *) &stats, sizeof stats) == sizeof stats &&
- stats.stat_size == sizeof stats &&
- stats.stat_magic == Stat.stat_magic &&
- stats.stat_version == Stat.stat_version)
- {
- /* merge current statistics into statfile */
- register int i;
- for (i = 0; i < MAXMAILERS; i++)
- {
- stats.stat_nf[i] += Stat.stat_nf[i];
- stats.stat_bf[i] += Stat.stat_bf[i];
- stats.stat_nt[i] += Stat.stat_nt[i];
- stats.stat_bt[i] += Stat.stat_bt[i];
- stats.stat_nr[i] += Stat.stat_nr[i];
- stats.stat_nd[i] += Stat.stat_nd[i];
- }
- stats.stat_cr += Stat.stat_cr;
- stats.stat_ct += Stat.stat_ct;
- stats.stat_cf += Stat.stat_cf;
- }
- else
- memmove((char *) &stats, (char *) &Stat, sizeof stats);
- /* write out results */
- (void) lseek(fd, (off_t) 0, 0);
- (void) write(fd, (char *) &stats, sizeof stats);
- (void) close(fd);
- /* clear the structure to avoid future disappointment */
- clearstats();
- }