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/*
* RTEMS version of syslog and associated routines
*
* $Id$
*/
#include <rtems.h>
#include <stdio.h>
#include <stdarg.h>
#include <errno.h>
#include <syslog.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
static int LogStatus = LOG_CONS;
static const char *LogTag = "syslog";
static int LogFacility = LOG_USER;
static int LogMask = 0xff;
static int LogFd = -1;
static rtems_id LogSemaphore;
extern struct in_addr rtems_bsdnet_log_host_address;
#define SYSLOG_PORT 514
void
syslog (int pri, const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
vsyslog (pri, fmt, ap);
va_end (ap);
}
/*
* FIXME: Should cbuf be static? It could be if we put the mutex
* around the entire body of this routine. Then we wouldn't
* have to worry about blowing stacks with a local variable
* that large. Could make cbuf bigger, too.
*/
void
vsyslog (int pri, const char *fmt, va_list ap)
{
int cnt;
char *cp;
char *msgp, cbuf[200];
int sent;
if (pri & ~(LOG_PRIMASK|LOG_FACMASK)) {
syslog (LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID,
"syslog: unknown facility/priority: %#x", pri);
pri &= LOG_PRIMASK|LOG_FACMASK;
}
if (!LOG_MASK(LOG_PRI(pri)) & LogMask)
return;
if ((pri & LOG_FACMASK) == 0)
pri |= LogFacility;
cnt = sprintf (cbuf, "<%d>", pri);
cp = msgp = cbuf + cnt;
if (LogTag) {
const char *lp = LogTag;
while ((*cp = *lp++) != '\0')
cp++;
}
if (LogStatus & LOG_PID) {
rtems_id tid;
rtems_task_ident (RTEMS_SELF, 0, &tid);
cnt = sprintf (cp, "[%#lx]", (unsigned long)tid);
cp += cnt;
}
if (LogTag) {
*cp++ = ':';
*cp++ = ' ';
}
cnt = vsprintf (cp, fmt, ap);
cnt += cp - cbuf;
if (cbuf[cnt-1] == '\n')
cbuf[--cnt] = '\0';
if (LogStatus & LOG_PERROR)
printf ("%s\n", cbuf);
/*
* Grab the mutex
*/
sent = 0;
if ((rtems_bsdnet_log_host_address.s_addr != INADDR_ANY)
&& (LogFd >= 0)
&& (rtems_semaphore_obtain (LogSemaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT) == RTEMS_SUCCESSFUL)) {
/*
* Set the destination address/port
*/
struct sockaddr_in farAddress;
farAddress.sin_family = AF_INET;
farAddress.sin_port = htons (SYSLOG_PORT);
farAddress.sin_addr = rtems_bsdnet_log_host_address;
memset (farAddress.sin_zero, '\0', sizeof farAddress.sin_zero);
/*
* Send the message
*/
if (sendto (LogFd, cbuf, cnt, 0, (struct sockaddr *)&farAddress, sizeof farAddress) >= 0)
sent = 1;
rtems_semaphore_release (LogSemaphore);
}
if (!sent && (LogStatus & LOG_CONS) && !(LogStatus & LOG_PERROR))
printf ("%s\n", msgp);
}
void
openlog (const char *ident, int logstat, int logfac)
{
rtems_status_code sc;
struct sockaddr_in myAddress;
if (ident != NULL)
LogTag = ident;
LogStatus = logstat;
if (logfac != 0 && (logfac & ~LOG_FACMASK) == 0)
LogFacility = logfac;
/*
* Create the socket
*/
if ((LogFd = socket (AF_INET, SOCK_DGRAM, 0)) < 0) {
printf ("Can't create syslog socket: %d\n", errno);
return;
}
/*
* Bind socket to name
*/
myAddress.sin_family = AF_INET;
myAddress.sin_addr.s_addr = INADDR_ANY;
myAddress.sin_port = 0;
memset (myAddress.sin_zero, '\0', sizeof myAddress.sin_zero);
if (bind (LogFd, (struct sockaddr *)&myAddress, sizeof (myAddress)) < 0) {
close (LogFd);
LogFd = -1;
printf ("Can't bind syslog socket: %d\n", errno);
return;
}
/*
* Create the mutex
*/
sc = rtems_semaphore_create (rtems_build_name('s', 'L', 'o', 'g'),
1,
RTEMS_PRIORITY |
RTEMS_BINARY_SEMAPHORE |
RTEMS_INHERIT_PRIORITY |
RTEMS_NO_PRIORITY_CEILING |
RTEMS_LOCAL,
0,
&LogSemaphore);
if (sc != RTEMS_SUCCESSFUL) {
printf ("Can't create syslog seamphore: %d\n", sc);
close (LogFd);
LogFd = -1;
}
}
void
closelog(void)
{
if (LogFd >= 0) {
close (LogFd);
LogFd = -1;
rtems_semaphore_delete (LogSemaphore);
}
}
int
setlogmask (int pmask)
{
int omask;
omask = LogMask;
if (pmask != 0)
LogMask = pmask;
return (omask);
}
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