From b186d980d6060195d01048bb3a083739137b6c21 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Fri, 3 Dec 1999 09:19:54 +0000
Subject: Stuf

---
 sysklogd/syslogd.c | 125 ++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 115 insertions(+), 10 deletions(-)

(limited to 'sysklogd')

diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
index 736adf7d1..3c7b0170d 100644
--- a/sysklogd/syslogd.c
+++ b/sysklogd/syslogd.c
@@ -32,6 +32,12 @@
 #include <signal.h>
 #include <ctype.h>
 #include <netdb.h>
+#include <sys/klog.h>
+#include <errno.h>
+#include <paths.h>
+
+#define ksyslog klogctl
+extern int ksyslog(int type, char *buf, int len);
 
 
 /* SYSLOG_NAMES defined to pull some extra junk from syslog.h */
@@ -40,8 +46,6 @@
 
 /* Path for the file where all log messages are written */
 #define __LOG_FILE		"/var/log/messages"
-/* Path to the current console device */
-#define __DEV_CONSOLE		"/dev/console"
 
 
 static char* logFilePath = __LOG_FILE;
@@ -58,7 +62,7 @@ static const char syslogd_usage[] =
     "\t-n\tDo not fork into the background (for when run by init)\n"
     "\t-O\tSpecify an alternate log file.  default=/var/log/messages\n";
 
-
+static int kmsg;
 
 /* try to open up the specified device */
 static int device_open(char *device, int mode)
@@ -92,7 +96,7 @@ static void message(char *fmt, ...)
 	close(fd);
     } else {
 	/* Always send console messages to /dev/console so people will see them. */
-	if ((fd = device_open(__DEV_CONSOLE, O_WRONLY|O_NOCTTY|O_NONBLOCK)) >= 0) {
+	if ((fd = device_open(_PATH_CONSOLE, O_WRONLY|O_NOCTTY|O_NONBLOCK)) >= 0) {
 	    va_start(arguments, fmt);
 	    vdprintf(fd, fmt, arguments);
 	    va_end(arguments);
@@ -250,20 +254,112 @@ static void doSyslogd(void)
     close(fd);
 }
 
+static void klogd_signal(int sig)
+{
+    //ksyslog(7, NULL, 0);
+    //ksyslog(0, 0, 0);
+    logMessage(LOG_SYSLOG|LOG_INFO, "Kernel log daemon terminating.");
+    exit( TRUE);
+}
+
+
+static void doKlogd(void)
+{
+    int priority=LOG_INFO;
+    struct stat sb;
+    char log_buffer[4096];
+
+    /* Set up sig handlers */
+    signal(SIGINT,  klogd_signal);
+    signal(SIGKILL, klogd_signal);
+    signal(SIGTERM, klogd_signal);
+    signal(SIGHUP,  klogd_signal);
+    logMessage(LOG_SYSLOG|LOG_INFO, "klogd started: "
+	    "BusyBox v" BB_VER " (" BB_BT ") multi-call binary");
+
+    //ksyslog(1, NULL, 0);
+    if ( ((stat(_PATH_KLOG, &sb) < 0) && (errno == ENOENT)) ||
+	    ( (kmsg = open(_PATH_KLOG, O_RDONLY)) < 0 ) ) {
+	char message[80];
+	snprintf(message, 79, "klogd: Cannot open %s, " \
+		"%d - %s.\n", _PATH_KLOG, errno, strerror(errno));
+	logMessage(LOG_SYSLOG|LOG_ERR, message);
+	klogd_signal(0);
+    }
+    while (1) {
+	memset(log_buffer, '\0', sizeof(log_buffer));
+	if ( read(kmsg, log_buffer, sizeof(log_buffer)-1) < 0 ) {
+	    char message[80];
+	    if ( errno == EINTR )
+		continue;
+	    snprintf(message, 79, "klogd: Cannot read proc file system: %d - %s.\n", 
+		    errno, strerror(errno));
+	    logMessage(LOG_SYSLOG|LOG_ERR, message);
+	    klogd_signal(0);
+	}
+#if 0
+	if ( ksyslog(2, log_buffer, sizeof(log_buffer)) < 0 ) {
+	    char message[80];
+	    if ( errno == EINTR )
+		continue;
+	    snprintf(message, 79, "klogd: Error return from sys_sycall: " \
+		    "%d - %s.\n", errno, strerror(errno));
+	    logMessage(LOG_SYSLOG|LOG_ERR, message);
+	    exit(1);
+	}
+#endif
+	fprintf(stderr, "the kernel says '%s'\n", log_buffer);
+        if ( *log_buffer == '<' )
+        {
+	    switch ( *(log_buffer+1) )
+	    {
+		case '0':
+		    priority = LOG_EMERG;
+		    break;
+		case '1':
+		    priority = LOG_ALERT;
+		    break;
+		case '2':
+		    priority = LOG_CRIT;
+		    break;
+		case '3':
+		    priority = LOG_ERR;
+		    break;
+		case '4':
+		    priority = LOG_WARNING;
+		    break;
+		case '5':
+		    priority = LOG_NOTICE;
+		    break;
+		case '6':
+		    priority = LOG_INFO;
+		    break;
+		case '7':
+		default:
+		    priority = LOG_DEBUG;
+	    }
+	    *log_buffer += 3;
+        }
+	logMessage(LOG_KERN|priority, log_buffer);
+    }
+
+}
+
 
 extern int syslogd_main(int argc, char **argv)
 {
-    int	pid;
+    int	pid, klogd_pid;
     int doFork = TRUE;
+    char **argv1=argv;
 
-    while (--argc > 0 && **(++argv) == '-') {
-	while (*(++(*argv))) {
-	    switch (**argv) {
+    while (--argc > 0 && **(++argv1) == '-') {
+	while (*(++(*argv1))) {
+	    switch (**argv1) {
 	    case 'm':
 		if (--argc == 0) {
 		    usage(syslogd_usage);
 		}
-		MarkInterval = atoi(*(++argv))*60;
+		MarkInterval = atoi(*(++argv1))*60;
 		break;
 	    case 'n':
 		doFork = FALSE;
@@ -272,7 +368,7 @@ extern int syslogd_main(int argc, char **argv)
 		if (--argc == 0) {
 		    usage(syslogd_usage);
 		}
-		logFilePath = *(++argv);
+		logFilePath = *(++argv1);
 		break;
 	    default:
 		usage(syslogd_usage);
@@ -285,11 +381,20 @@ extern int syslogd_main(int argc, char **argv)
 	if ( pid < 0 )
 	    exit( pid);
 	else if ( pid == 0 ) {
+	    strncpy(argv[0], "syslogd",strlen(argv[0]));
 	    doSyslogd();
 	}
     } else {
 	doSyslogd();
     }
+
+    /* Start klogd process */
+    klogd_pid = fork();
+    if (klogd_pid == 0 ) {
+	    strncpy(argv[0], "klogd", strlen(argv[0]));
+	    doKlogd();
+    }
+
     exit( TRUE);
 }
 
-- 
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