imported original firmware WRT54GL_v4.30.11_11_US

1 files changed, 167 insertions, 0 deletions

diff --git a/release/src/router/busybox/sysklogd/klogd.c b/release/src/router/busybox/sysklogd/klogd.c
new file mode 100644
index 00000000..c132e065
--- /dev/null
+++ b/release/src/router/busybox/sysklogd/klogd.c
@@ -0,0 +1,167 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini klogd implementation for busybox
+ *
+ * Copyright (C) 2001 by Gennady Feldman <gfeldman@gena01.com>.
+ * Changes: Made this a standalone busybox module which uses standalone
+ * 					syslog() client interface.
+ *
+ * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Copyright (C) 2000 by Karl M. Hegbloom <karlheg@debian.org>
+ *
+ * "circular buffer" Copyright (C) 2000 by Gennady Feldman <gfeldman@gena01.com>
+ *
+ * Maintainer: Gennady Feldman <gfeldman@gena01.com> as of Mar 12, 2001
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>		/* for our signal() handlers */
+#include <string.h>		/* strncpy() */
+#include <errno.h>		/* errno and friends */
+#include <unistd.h>
+#include <ctype.h>
+#include <sys/syslog.h>
+#include <sys/klog.h>
+
+#include "busybox.h"
+
+static void klogd_signal(int sig)
+{
+	klogctl(7, NULL, 0);
+	klogctl(0, 0, 0);
+	/* logMessage(0, "Kernel log daemon exiting."); */
+	syslog_msg(LOG_SYSLOG, LOG_NOTICE, "Kernel log daemon exiting.");
+	exit(TRUE);
+}
+
+static void doKlogd(const char console_log_level) __attribute__ ((noreturn));
+static void doKlogd(const char console_log_level)
+{
+	int priority = LOG_INFO;
+	char log_buffer[4096];
+	int i, n, lastc;
+	char *start;
+
+	/* Set up sig handlers */
+	signal(SIGINT, klogd_signal);
+	signal(SIGKILL, klogd_signal);
+	signal(SIGTERM, klogd_signal);
+	signal(SIGHUP, SIG_IGN);
+
+	/* "Open the log. Currently a NOP." */
+	klogctl(1, NULL, 0);
+
+	/* Set level of kernel console messaging.. */
+	if (console_log_level)
+		klogctl(8, NULL, console_log_level);
+
+	syslog_msg(LOG_SYSLOG, LOG_NOTICE, "klogd started: " BB_BANNER);
+
+	while (1) {
+		/* Use kernel syscalls */
+		memset(log_buffer, '\0', sizeof(log_buffer));
+		n = klogctl(2, log_buffer, sizeof(log_buffer));
+		if (n < 0) {
+			char message[80];
+
+			if (errno == EINTR)
+				continue;
+			snprintf(message, 79,
+					 "klogd: Error return from sys_sycall: %d - %s.\n", errno,
+					 strerror(errno));
+			syslog_msg(LOG_SYSLOG, LOG_ERR, message);
+			exit(1);
+		}
+
+		/* klogctl buffer parsing modelled after code in dmesg.c */
+		start = &log_buffer[0];
+		lastc = '\0';
+		for (i = 0; i < n; i++) {
+			if (lastc == '\0' && log_buffer[i] == '<') {
+				priority = 0;
+				i++;
+				while (isdigit(log_buffer[i])) {
+					priority = priority * 10 + (log_buffer[i] - '0');
+					i++;
+				}
+				if (log_buffer[i] == '>')
+					i++;
+				start = &log_buffer[i];
+			}
+			if (log_buffer[i] == '\n') {
+				log_buffer[i] = '\0';	/* zero terminate this message */
+				syslog_msg(LOG_KERN, priority, start);
+				start = &log_buffer[i + 1];
+				priority = LOG_INFO;
+			}
+			lastc = log_buffer[i];
+		}
+	}
+}
+
+extern int klogd_main(int argc, char **argv)
+{
+	/* no options, no getopt */
+	int opt;
+	int doFork = TRUE;
+	unsigned char console_log_level = 7;
+
+	/* do normal option parsing */
+	while ((opt = getopt(argc, argv, "c:n")) > 0) {
+		switch (opt) {
+		case 'c':
+			if ((optarg == NULL) || (optarg[1] != '\0')) {
+				bb_show_usage();
+			}
+			/* Valid levels are between 1 and 8 */
+			console_log_level = *optarg - '1';
+			if (console_log_level > 7) {
+				bb_show_usage();
+			}
+			console_log_level++;
+			
+			break;
+		case 'n':
+			doFork = FALSE;
+			break;
+		default:
+			bb_show_usage();
+		}
+	}
+
+	if (doFork) {
+		if (daemon(0, 1) < 0)
+			bb_perror_msg_and_die("daemon");
+#if defined(__uClinux__)
+		vfork_daemon_rexec(argc, argv, "-n");
+#endif
+	}
+	doKlogd(console_log_level);
+
+	return EXIT_SUCCESS;
+}
+
+/*
+Local Variables
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/