|
NAME
| |
syslog, sysfatal – system error messages
|
SYNOPSIS
| |
#include <u.h>
#include <libc.h>
void syslog(int cons, char *logname, char *fmt, ...)
void sysfatal(char *fmt, ...)
|
DESCRIPTION
| |
Sysfatal prints to standard error the name of the running program,
a colon and a space, the message described by the print(3) format
string fmt and subsequent arguments, and a newline. It then calls
exits(3) with the formatted message as argument. The program’s
name is the value of argv0, which will be set if the program uses
the arg(3) interface
to process its arguments. If argv0 is null, it is ignored and
the following colon and space are suppressed.
Syslog logs messages in the file named by logname in the directory
/home/opt/plan9port/log ; the file must already exist and is opened
append-only. Logname must contain no slashes. The message is a
line with several fields: the name of the machine writing the
message; the date and time; the message specified by the print(3)
format fmt
and any following arguments; and a final newline. If cons is set
or the log file cannot be opened, the message is also printed
on the system console. Syslog can be used safely in multi-threaded
programs.
|
SOURCE
SEE ALSO
|
|
