openlog()

Открыть системный журнал

Прототип:

#include <syslog.h>
void openlog( const char *ident,
int logopt,
int facility );

Аргументы:

ident
A string that you want to prepend to every message.
logopt
A bit field specifying logging options; a combination of one or more of the following values with an OR operation:
LOG_CONS
If syslog() can't pass the message to syslogd, it attempts to write the message to the /dev/console device. The /dev/console device is usually a symlink (see the ln command) to a real device (e.g. /dev/text, /dev/con1 or /dev/ser1).
LOG_NDELAY
Open the connection to syslogd immediately. Normally the opening is delayed until the first message is logged.
LOG_PERROR
Write the message to standard error output as well to the system log.
LOG_PID
Log the process ID with each message. This is useful for identifying instantiations of daemons.
facility
Encode a default facility to be assigned to all messages that don't have an explicit facility encoded. In the following list, parameter values marked with an asterisk (*) aren't used by any of the ЗОСРВ «Нейтрино» standard utilities.
LOG_AUTH *
Authorization system.
LOG_AUTHPRIV *
Same as LOG_AUTH, but logged to a file readable only by selected individuals.
LOG_CRON *
Clock daemon.
LOG_DAEMON
System daemons (such as routed) that aren't explicitly provided for by other facilities.
LOG_FTP
File transfer protocol daemon.
LOG_KERN *
Messages generated by the kernel. These can't be generated by any user processes.
LOG_LPR
Line printer spooling system.
LOG_MAIL
Mail system.
LOG_NEWS *
Network news system.
LOG_SYSLOG
Messages generated internally by syslogd.
LOG_USER*
Messages generated by random user processes. This is the default facility identifier if none is specified.
LOG_UUCP *
The uucp system.
LOG_LOCAL0
...
LOG_LOCAL7 *
Reserved for local use.

Библиотека:

libc

Описание:

The openlog() function opens the system log and provides for more specialized processing of the messages sent by syslog() and vsyslog().

Примеры:

См. syslog()

Классификация:

POSIX 1003.1 XSI

Точка остановки потока
Да
Обработчик прерываний
Нет
Обработчик сигналов
Нет
В потоке
Да

Тематические ссылки:

closelog(), setlogmask(), syslog(), vsyslog()

logger, syslogd в Справочнике по Утилитам




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