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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [libnetworking/] [lib/] [syslog.c] - Rev 1765
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/* * RTEMS version of syslog and associated routines * * syslog.c,v 1.2 1998/08/20 21:47:35 joel Exp */ #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> #include <unistd.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); }