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Fix too long syslog message problem

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This commit is contained in:
Tatsuo Ishii 2000-05-26 12:17:48 +00:00
parent 8bba4b4e0e
commit 23b0387a94
1 changed files with 81 additions and 1 deletions
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82
src/backend/utils/misc/trace.c
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@ -24,6 +24,12 @@
#include "miscadmin.h"
#include "utils/trace.h"
#include <ctype.h>
#ifdef MULTIBYTE
#include "mb/pg_wchar.h"
#endif
/*
* We could support trace messages of indefinite length, as elog() does,
* but it's probably not worth the trouble. Instead limit trace message
@ -204,16 +210,90 @@ eprintf(const char *fmt,...)
void
write_syslog(int level, char *line)
{
#ifndef PG_SYSLOG_LIMIT
#define PG_SYSLOG_LIMIT 128
#endif /* PG_SYSLOG_LIMIT */
static int openlog_done = 0;
static char buf[PG_SYSLOG_LIMIT+1];
static int logid = 0;
if (UseSyslog >= 1)
{
int len = strlen(line);
int buflen;
int seq = 0;
int l;
int i;
if (!openlog_done)
{
openlog_done = 1;
openlog(PG_LOG_IDENT, LOG_PID | LOG_NDELAY, PG_LOG_FACILITY);
}
syslog(level, "%s", line);
/* divide into multiple syslog() calls if message is
* too long
*/
if (len > PG_SYSLOG_LIMIT)
{
logid++;
while (len > 0)
{
strncpy(buf, line, PG_SYSLOG_LIMIT);
buf[PG_SYSLOG_LIMIT] = '\0';
l = strlen(buf);
#ifdef MULTIBYTE
/* trim to multibyte letter boundary */
buflen = pg_mbcliplen(buf, l, l);
buf[buflen] = '\0';
l = strlen(buf);
#endif
/* already word boundary? */
if (isspace(line[l]) || line[l] == '\0')
{
buflen = l;
}
else
{
/* try to divide in word boundary */
i = l - 1;
while(i > 0 && !isspace(buf[i]))
{
i--;
}
if (i <= 0) /* couldn't divide word boundary */
{
buflen = l;
}
else
{
buflen = i;
buf[i] = '\0';
}
}
seq++;
/*
* Here we actually call syslog().
* For segmented messages, we add logid
* (incremented at each write_syslog call),
* and seq (incremented at each syslog call
* within a write_syslog call).
* This will prevent syslog to surpress
* "same" messages...
*/
syslog(level, "[%d-%d] %s", logid, seq, buf);
line += buflen;
len -= buflen;
}
}
else
{
syslog(level, "%s", line);
}
}
}