vsyslog(3)

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | ATTRIBUTES | SEE ALSO

NAME

vsyslog- log message with a varargs argument list

SYNOPSIS

#include <syslog.h>
#include <varargs.h>

int vsyslog(int priority, const char *message, va_list ap);

DESCRIPTION

vsyslog() is the same as syslog(3) except that instead of being called with a variable number of arguments, it is called with an argument list as defined by varargs(5).

EXAMPLES

---

Example 1 Using vsyslog() To Write An Error Routine




The following demonstrates how vsyslog() can be used to write an error routine.

#include <syslog.h>
#include <varargs.h>
. . .
	/*
	 * error should be called like:
	 * 	error(pri, function_name, format, arg1, arg2...);
	 * Note that pri, function_name, and format cannot be declared
	 * separately because of the definition of varargs.
	 */
/*VARARGS0*/
void
error(va_alist)
	va_dcl;	{
	va_list args;
	int pri;
	char *message;
        va_start(args);
	pri = va_arg(args, int);
	/* log name of function causing error */
	(void) syslog(pri, "ERROR in %s", va_arg(args, char *));
	message = va_arg(args, char *);
	/* log remainder of message */
	(void) vsyslog(pri, msg, args);
	va_end(args);
	(void) abort( );
}

---

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
MT-Level	Safe

SEE ALSO

syslog(3), attributes(5), varargs(5)

SunOS 5.7  Last Revised 29 Dec 1996

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | ATTRIBUTES | SEE ALSO