vsyslog(3C)

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

NAME

vsyslog– log message with a stdarg argument list

SYNOPSIS

#include <syslog.h>
#include <stdarg.h>

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

DESCRIPTION

The vsyslog() function is identical to syslog(3C), except that it is called with an argument list as defined by stdarg(3HEAD) rather than with a variable number of arguments.

EXAMPLES

---

Example 1 Use vsyslog() to write an error routine.




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

#include <syslog.h>
#include <stdarg.h>
 
/*
 * error should be called like:
 *   error(pri, function_name, format, arg1, arg2...);
 */

void
error(int pri, char *function_name, char *format, ...)
{
        va_list args;

        va_start(args, format);
        /* log name of function causing error */
        (void) syslog(pri, "ERROR in %s.", function_name);
        /* log remainder of message */
        (void) vsyslog(pri, format, args);
        va_end(args);
        (void) abort( );
}

main()
{
        error(LOG_ERR, "main", "process %d is dying", getpid());
}

---

ATTRIBUTES

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

ATTRIBUTE TYPE	ATTRIBUTE VALUE
MT-Level	Safe

SEE ALSO

stdarg(3HEAD), syslog(3C), attributes(5)

SunOS 5.9  Last Revised 15 Nov 1999

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