busybox: imported from http://www.busybox.net/downloads/busybox-1.13.3.tar.bz2busybox-1.13.3

Signed-off-by: Bjørn Mork <bjorn@mork.no>

7 files changed, 1359 insertions, 0 deletions

diff --git a/sysklogd/Config.in b/sysklogd/Config.in
new file mode 100644
index 0000000..0664be0
--- /dev/null
+++ b/sysklogd/Config.in
@@ -0,0 +1,118 @@
+#
+# For a description of the syntax of this configuration file,
+# see scripts/kbuild/config-language.txt.
+#
+
+menu "System Logging Utilities"
+
+config SYSLOGD
+	bool "syslogd"
+	default n
+	help
+	  The syslogd utility is used to record logs of all the
+	  significant events that occur on a system. Every
+	  message that is logged records the date and time of the
+	  event, and will generally also record the name of the
+	  application that generated the message. When used in
+	  conjunction with klogd, messages from the Linux kernel
+	  can also be recorded. This is terribly useful,
+	  especially for finding what happened when something goes
+	  wrong. And something almost always will go wrong if
+	  you wait long enough....
+
+config FEATURE_ROTATE_LOGFILE
+	bool "Rotate message files"
+	default n
+	depends on SYSLOGD
+	help
+	  This enables syslogd to rotate the message files
+	  on his own. No need to use an external rotatescript.
+
+config FEATURE_REMOTE_LOG
+	bool "Remote Log support"
+	default n
+	depends on SYSLOGD
+	help
+	  When you enable this feature, the syslogd utility can
+	  be used to send system log messages to another system
+	  connected via a network. This allows the remote
+	  machine to log all the system messages, which can be
+	  terribly useful for reducing the number of serial
+	  cables you use. It can also be a very good security
+	  measure to prevent system logs from being tampered with
+	  by an intruder.
+
+config FEATURE_SYSLOGD_DUP
+	bool "Support -D (drop dups) option"
+	default n
+	depends on SYSLOGD
+	help
+	  Option -D instructs syslogd to drop consecutive messages
+	  which are totally the same.
+
+config FEATURE_IPC_SYSLOG
+	bool "Circular Buffer support"
+	default n
+	depends on SYSLOGD
+	help
+	  When you enable this feature, the syslogd utility will
+	  use a circular buffer to record system log messages.
+	  When the buffer is filled it will continue to overwrite
+	  the oldest messages. This can be very useful for
+	  systems with little or no permanent storage, since
+	  otherwise system logs can eventually fill up your
+	  entire filesystem, which may cause your system to
+	  break badly.
+
+config FEATURE_IPC_SYSLOG_BUFFER_SIZE
+	int "Circular buffer size in Kbytes (minimum 4KB)"
+	default 16
+	range 4 2147483647
+	depends on FEATURE_IPC_SYSLOG
+	help
+	  This option sets the size of the circular buffer
+	  used to record system log messages.
+
+config LOGREAD
+	bool "logread"
+	default y
+	depends on FEATURE_IPC_SYSLOG
+	help
+	  If you enabled Circular Buffer support, you almost
+	  certainly want to enable this feature as well. This
+	  utility will allow you to read the messages that are
+	  stored in the syslogd circular buffer.
+
+config FEATURE_LOGREAD_REDUCED_LOCKING
+	bool "Double buffering"
+	default n
+	depends on LOGREAD
+	help
+	  'logread' ouput to slow serial terminals can have
+	  side effects on syslog because of the semaphore.
+	  This option make logread to double buffer copy
+	  from circular buffer, minimizing semaphore
+	  contention at some minor memory expense.
+
+config KLOGD
+	bool "klogd"
+	default n
+	help
+	  klogd is a utility which intercepts and logs all
+	  messages from the Linux kernel and sends the messages
+	  out to the 'syslogd' utility so they can be logged. If
+	  you wish to record the messages produced by the kernel,
+	  you should enable this option.
+
+config LOGGER
+	bool "logger"
+	default n
+	select FEATURE_SYSLOG
+	help
+	    The logger utility allows you to send arbitrary text
+	    messages to the system log (i.e. the 'syslogd' utility) so
+	    they can be logged. This is generally used to help locate
+	    problems that occur within programs and scripts.
+
+endmenu
+
diff --git a/sysklogd/Kbuild b/sysklogd/Kbuild
new file mode 100644
index 0000000..d802198
--- /dev/null
+++ b/sysklogd/Kbuild
@@ -0,0 +1,11 @@
+# Makefile for busybox
+#
+# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
+#
+# Licensed under the GPL v2, see the file LICENSE in this tarball.
+
+lib-y:=
+lib-$(CONFIG_KLOGD)		+= klogd.o
+lib-$(CONFIG_LOGGER)		+= syslogd_and_logger.o
+lib-$(CONFIG_LOGREAD)		+= logread.o
+lib-$(CONFIG_SYSLOGD)		+= syslogd_and_logger.o
diff --git a/sysklogd/klogd.c b/sysklogd/klogd.c
new file mode 100644
index 0000000..a27ddf4
--- /dev/null
+++ b/sysklogd/klogd.c
@@ -0,0 +1,135 @@
+/* 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) 1999-2004 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
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+#include "libbb.h"
+#include <syslog.h>
+#include <sys/klog.h>
+
+static void klogd_signal(int sig)
+{
+	/* FYI: cmd 7 is equivalent to setting console_loglevel to 7
+	 * via klogctl(8, NULL, 7). */
+	klogctl(7, NULL, 0); /* "7 -- Enable printk's to console" */
+	klogctl(0, NULL, 0); /* "0 -- Close the log. Currently a NOP" */
+	syslog(LOG_NOTICE, "klogd: exiting");
+	kill_myself_with_sig(sig);
+}
+
+#define log_buffer bb_common_bufsiz1
+enum {
+	KLOGD_LOGBUF_SIZE = sizeof(log_buffer),
+	OPT_LEVEL      = (1 << 0),
+	OPT_FOREGROUND = (1 << 1),
+};
+
+int klogd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int klogd_main(int argc UNUSED_PARAM, char **argv)
+{
+	int i = 0;
+	char *start;
+	int opt;
+	int used = 0;
+
+	opt = getopt32(argv, "c:n", &start);
+	if (opt & OPT_LEVEL) {
+		/* Valid levels are between 1 and 8 */
+		i = xatou_range(start, 1, 8);
+	}
+	if (!(opt & OPT_FOREGROUND)) {
+		bb_daemonize_or_rexec(DAEMON_CHDIR_ROOT, argv);
+	}
+
+	openlog("kernel", 0, LOG_KERN);
+
+	bb_signals(0
+		+ (1 << SIGINT)
+		+ (1 << SIGTERM)
+		, klogd_signal);
+	signal(SIGHUP, SIG_IGN);
+
+	/* "Open the log. Currently a NOP" */
+	klogctl(1, NULL, 0);
+
+	/* "printk() prints a message on the console only if it has a loglevel
+	 * less than console_loglevel". Here we set console_loglevel = i. */
+	if (i)
+		klogctl(8, NULL, i);
+
+	syslog(LOG_NOTICE, "klogd started: %s", bb_banner);
+
+	while (1) {
+		int n;
+		int priority;
+
+		/* "2 -- Read from the log." */
+		n = klogctl(2, log_buffer + used, KLOGD_LOGBUF_SIZE-1 - used);
+		if (n < 0) {
+			if (errno == EINTR)
+				continue;
+			syslog(LOG_ERR, "klogd: error %d in klogctl(2): %m",
+					errno);
+			break;
+		}
+		log_buffer[used + n] = '\0';
+
+		/* klogctl buffer parsing modelled after code in dmesg.c */
+		start = &log_buffer[0];
+
+		/* Process each newline-terminated line in the buffer */
+		while (1) {
+			char *newline = strchr(start, '\n');
+
+			if (!newline) {
+				/* This line is incomplete... */
+				if (start != log_buffer) {
+					/* move it to the front of the buffer */
+					overlapping_strcpy(log_buffer, start);
+					/* don't log it yet */
+					used = strlen(log_buffer);
+					break;
+				}
+				/* ...but buffer is full, so log it anyway */
+				used = 0;
+			} else {
+				*newline++ = '\0';
+			}
+
+			/* Extract the priority */
+			priority = LOG_INFO;
+			if (*start == '<') {
+				start++;
+				if (*start) {
+					/* kernel never generates multi-digit prios */
+					priority = (*start - '0');
+					start++;
+				}
+				if (*start == '>') {
+					start++;
+				}
+			}
+			if (*start)
+				syslog(priority, "%s", start);
+			if (!newline)
+				break;
+			start = newline;
+		}
+	}
+
+	return EXIT_FAILURE;
+}
diff --git a/sysklogd/logger.c b/sysklogd/logger.c
new file mode 100644
index 0000000..6258113
--- /dev/null
+++ b/sysklogd/logger.c
@@ -0,0 +1,157 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini logger implementation for busybox
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/*
+ * Done in syslogd_and_logger.c:
+#include "libbb.h"
+#define SYSLOG_NAMES
+#define SYSLOG_NAMES_CONST
+#include <syslog.h>
+*/
+
+/* Decode a symbolic name to a numeric value
+ * this function is based on code
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California.  All rights reserved.
+ *
+ * Original copyright notice is retained at the end of this file.
+ */
+static int decode(char *name, const CODE *codetab)
+{
+	const CODE *c;
+
+	if (isdigit(*name))
+		return atoi(name);
+	for (c = codetab; c->c_name; c++) {
+		if (!strcasecmp(name, c->c_name)) {
+			return c->c_val;
+		}
+	}
+
+	return -1;
+}
+
+/* Decode a symbolic name to a numeric value
+ * this function is based on code
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California.  All rights reserved.
+ *
+ * Original copyright notice is retained at the end of this file.
+ */
+static int pencode(char *s)
+{
+	char *save;
+	int lev, fac = LOG_USER;
+
+	for (save = s; *s && *s != '.'; ++s)
+		;
+	if (*s) {
+		*s = '\0';
+		fac = decode(save, facilitynames);
+		if (fac < 0)
+			bb_error_msg_and_die("unknown %s name: %s", "facility", save);
+		*s++ = '.';
+	} else {
+		s = save;
+	}
+	lev = decode(s, prioritynames);
+	if (lev < 0)
+		bb_error_msg_and_die("unknown %s name: %s", "priority", save);
+	return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
+}
+
+#define strbuf bb_common_bufsiz1
+
+int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int logger_main(int argc, char **argv)
+{
+	char *str_p, *str_t;
+	int i = 0;
+	char name[80];
+
+	/* Fill out the name string early (may be overwritten later) */
+	bb_getpwuid(name, sizeof(name), geteuid());
+	str_t = name;
+
+	/* Parse any options */
+	getopt32(argv, "p:st:", &str_p, &str_t);
+
+	if (option_mask32 & 0x2) /* -s */
+		i |= LOG_PERROR;
+	//if (option_mask32 & 0x4) /* -t */
+	openlog(str_t, i, 0);
+	i = LOG_USER | LOG_NOTICE;
+	if (option_mask32 & 0x1) /* -p */
+		i = pencode(str_p);
+
+	argc -= optind;
+	argv += optind;
+	if (!argc) {
+		while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
+			if (strbuf[0]
+			 && NOT_LONE_CHAR(strbuf, '\n')
+			) {
+				/* Neither "" nor "\n" */
+				syslog(i, "%s", strbuf);
+			}
+		}
+	} else {
+		char *message = NULL;
+		int len = 0;
+		int pos = 0;
+		do {
+			len += strlen(*argv) + 1;
+			message = xrealloc(message, len + 1);
+			sprintf(message + pos, " %s", *argv),
+			pos = len;
+		} while (*++argv);
+		syslog(i, "%s", message + 1); /* skip leading " " */
+	}
+
+	closelog();
+	return EXIT_SUCCESS;
+}
+
+/* Clean up. Needed because we are included from syslogd_and_logger.c */
+#undef strbuf
+
+/*-
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This is the original license statement for the decode and pencode functions.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
+ *		ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
+ *
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
diff --git a/sysklogd/logread.c b/sysklogd/logread.c
new file mode 100644
index 0000000..603a377
--- /dev/null
+++ b/sysklogd/logread.c
@@ -0,0 +1,185 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * circular buffer syslog implementation for busybox
+ *
+ * Copyright (C) 2000 by Gennady Feldman <gfeldman@gena01.com>
+ *
+ * Maintainer: Gennady Feldman <gfeldman@gena01.com> as of Mar 12, 2001
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+
+#define DEBUG 0
+
+/* our shared key (syslogd.c and logread.c must be in sync) */
+enum { KEY_ID = 0x414e4547 }; /* "GENA" */
+
+struct shbuf_ds {
+	int32_t size;           // size of data - 1
+	int32_t tail;           // end of message list
+	char data[1];           // messages
+};
+
+static const struct sembuf init_sem[3] = {
+	{0, -1, IPC_NOWAIT | SEM_UNDO},
+	{1, 0}, {0, +1, SEM_UNDO}
+};
+
+struct globals {
+	struct sembuf SMrup[1]; // {0, -1, IPC_NOWAIT | SEM_UNDO},
+	struct sembuf SMrdn[2]; // {1, 0}, {0, +1, SEM_UNDO}
+	struct shbuf_ds *shbuf;
+};
+#define G (*(struct globals*)&bb_common_bufsiz1)
+#define SMrup (G.SMrup)
+#define SMrdn (G.SMrdn)
+#define shbuf (G.shbuf)
+#define INIT_G() do { \
+	memcpy(SMrup, init_sem, sizeof(init_sem)); \
+} while (0)
+
+static void error_exit(const char *str) NORETURN;
+static void error_exit(const char *str)
+{
+	//release all acquired resources
+	shmdt(shbuf);
+	bb_perror_msg_and_die(str);
+}
+
+/*
+ * sem_up - up()'s a semaphore.
+ */
+static void sem_up(int semid)
+{
+	if (semop(semid, SMrup, 1) == -1)
+		error_exit("semop[SMrup]");
+}
+
+static void interrupted(int sig UNUSED_PARAM)
+{
+	signal(SIGINT, SIG_IGN);
+	shmdt(shbuf);
+	exit(EXIT_SUCCESS);
+}
+
+int logread_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int logread_main(int argc UNUSED_PARAM, char **argv)
+{
+	unsigned cur;
+	int log_semid; /* ipc semaphore id */
+	int log_shmid; /* ipc shared memory id */
+	smallint follow = getopt32(argv, "f");
+
+	INIT_G();
+
+	log_shmid = shmget(KEY_ID, 0, 0);
+	if (log_shmid == -1)
+		bb_perror_msg_and_die("can't find syslogd buffer");
+
+	/* Attach shared memory to our char* */
+	shbuf = shmat(log_shmid, NULL, SHM_RDONLY);
+	if (shbuf == NULL)
+		bb_perror_msg_and_die("can't access syslogd buffer");
+
+	log_semid = semget(KEY_ID, 0, 0);
+	if (log_semid == -1)
+		error_exit("can't get access to semaphores for syslogd buffer");
+
+	signal(SIGINT, interrupted);
+
+	/* Suppose atomic memory read */
+	/* Max possible value for tail is shbuf->size - 1 */
+	cur = shbuf->tail;
+
+	/* Loop for logread -f, one pass if there was no -f */
+	do {
+		unsigned shbuf_size;
+		unsigned shbuf_tail;
+		const char *shbuf_data;
+#if ENABLE_FEATURE_LOGREAD_REDUCED_LOCKING
+		int i;
+		int len_first_part;
+		int len_total = len_total; /* for gcc */
+		char *copy = copy; /* for gcc */
+#endif
+		if (semop(log_semid, SMrdn, 2) == -1)
+			error_exit("semop[SMrdn]");
+
+		/* Copy the info, helps gcc to realize that it doesn't change */
+		shbuf_size = shbuf->size;
+		shbuf_tail = shbuf->tail;
+		shbuf_data = shbuf->data; /* pointer! */
+
+		if (DEBUG)
+			printf("cur:%d tail:%i size:%i\n",
+					cur, shbuf_tail, shbuf_size);
+
+		if (!follow) {
+			/* advance to oldest complete message */
+			/* find NUL */
+			cur += strlen(shbuf_data + cur);
+			if (cur >= shbuf_size) { /* last byte in buffer? */
+				cur = strnlen(shbuf_data, shbuf_tail);
+				if (cur == shbuf_tail)
+					goto unlock; /* no complete messages */
+			}
+			/* advance to first byte of the message */
+			cur++;
+			if (cur >= shbuf_size) /* last byte in buffer? */
+				cur = 0;
+		} else { /* logread -f */
+			if (cur == shbuf_tail) {
+				sem_up(log_semid);
+				fflush(stdout);
+				sleep(1); /* TODO: replace me with a sleep_on */
+				continue;
+			}
+		}
+
+		/* Read from cur to tail */
+#if ENABLE_FEATURE_LOGREAD_REDUCED_LOCKING
+		len_first_part = len_total = shbuf_tail - cur;
+		if (len_total < 0) {
+			/* message wraps: */
+			/* [SECOND PART.........FIRST PART] */
+			/*  ^data      ^tail    ^cur      ^size */
+			len_total += shbuf_size;
+		}
+		copy = xmalloc(len_total + 1);
+		if (len_first_part < 0) {
+			/* message wraps (see above) */
+			len_first_part = shbuf_size - cur;
+			memcpy(copy + len_first_part, shbuf_data, shbuf_tail);
+		}
+		memcpy(copy, shbuf_data + cur, len_first_part);
+		copy[len_total] = '\0';
+		cur = shbuf_tail;
+#else
+		while (cur != shbuf_tail) {
+			fputs(shbuf_data + cur, stdout);
+			cur += strlen(shbuf_data + cur) + 1;
+			if (cur >= shbuf_size)
+				cur = 0;
+		}
+#endif
+ unlock:
+		/* release the lock on the log chain */
+		sem_up(log_semid);
+
+#if ENABLE_FEATURE_LOGREAD_REDUCED_LOCKING
+		for (i = 0; i < len_total; i += strlen(copy + i) + 1) {
+			fputs(copy + i, stdout);
+		}
+		free(copy);
+#endif
+	} while (follow);
+
+	shmdt(shbuf);
+
+	fflush_stdout_and_exit(EXIT_SUCCESS);
+}
diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
new file mode 100644
index 0000000..f624eb7
--- /dev/null
+++ b/sysklogd/syslogd.c
@@ -0,0 +1,702 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini syslogd implementation for busybox
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Copyright (C) 2000 by Karl M. Hegbloom <karlheg@debian.org>
+ *
+ * "circular buffer" Copyright (C) 2001 by Gennady Feldman <gfeldman@gena01.com>
+ *
+ * Maintainer: Gennady Feldman <gfeldman@gena01.com> as of Mar 12, 2001
+ *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ */
+
+/*
+ * Done in syslogd_and_logger.c:
+#include "libbb.h"
+#define SYSLOG_NAMES
+#define SYSLOG_NAMES_CONST
+#include <syslog.h>
+*/
+
+#include <paths.h>
+#include <sys/un.h>
+#include <sys/uio.h>
+
+#if ENABLE_FEATURE_REMOTE_LOG
+#include <netinet/in.h>
+#endif
+
+#if ENABLE_FEATURE_IPC_SYSLOG
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#endif
+
+
+#define DEBUG 0
+
+/* MARK code is not very useful, is bloat, and broken:
+ * can deadlock if alarmed to make MARK while writing to IPC buffer
+ * (semaphores are down but do_mark routine tries to down them again) */
+#undef SYSLOGD_MARK
+
+enum {
+	MAX_READ = 256,
+	DNS_WAIT_SEC = 2 * 60,
+};
+
+/* Semaphore operation structures */
+struct shbuf_ds {
+	int32_t size;   /* size of data - 1 */
+	int32_t tail;   /* end of message list */
+	char data[1];   /* data/messages */
+};
+
+/* Allows us to have smaller initializer. Ugly. */
+#define GLOBALS \
+	const char *logFilePath;                \
+	int logFD;                              \
+	/* interval between marks in seconds */ \
+	/*int markInterval;*/                   \
+	/* level of messages to be logged */    \
+	int logLevel;                           \
+USE_FEATURE_ROTATE_LOGFILE( \
+	/* max size of file before rotation */  \
+	unsigned logFileSize;                   \
+	/* number of rotated message files */   \
+	unsigned logFileRotate;                 \
+	unsigned curFileSize;                   \
+	smallint isRegular;                     \
+) \
+USE_FEATURE_REMOTE_LOG( \
+	/* udp socket for remote logging */     \
+	int remoteFD;                           \
+	len_and_sockaddr* remoteAddr;           \
+) \
+USE_FEATURE_IPC_SYSLOG( \
+	int shmid; /* ipc shared memory id */   \
+	int s_semid; /* ipc semaphore id */     \
+	int shm_size;                           \
+	struct sembuf SMwup[1];                 \
+	struct sembuf SMwdn[3];                 \
+)
+
+struct init_globals {
+	GLOBALS
+};
+
+struct globals {
+	GLOBALS
+
+#if ENABLE_FEATURE_REMOTE_LOG
+	unsigned last_dns_resolve;
+	char *remoteAddrStr;
+#endif
+
+#if ENABLE_FEATURE_IPC_SYSLOG
+	struct shbuf_ds *shbuf;
+#endif
+	time_t last_log_time;
+	/* localhost's name. We print only first 64 chars */
+	char *hostname;
+
+	/* We recv into recvbuf... */
+	char recvbuf[MAX_READ * (1 + ENABLE_FEATURE_SYSLOGD_DUP)];
+	/* ...then copy to parsebuf, escaping control chars */
+	/* (can grow x2 max) */
+	char parsebuf[MAX_READ*2];
+	/* ...then sprintf into printbuf, adding timestamp (15 chars),
+	 * host (64), fac.prio (20) to the message */
+	/* (growth by: 15 + 64 + 20 + delims = ~110) */
+	char printbuf[MAX_READ*2 + 128];
+};
+
+static const struct init_globals init_data = {
+	.logFilePath = "/var/log/messages",
+	.logFD = -1,
+#ifdef SYSLOGD_MARK
+	.markInterval = 20 * 60,
+#endif
+	.logLevel = 8,
+#if ENABLE_FEATURE_ROTATE_LOGFILE
+	.logFileSize = 200 * 1024,
+	.logFileRotate = 1,
+#endif
+#if ENABLE_FEATURE_REMOTE_LOG
+	.remoteFD = -1,
+#endif
+#if ENABLE_FEATURE_IPC_SYSLOG
+	.shmid = -1,
+	.s_semid = -1,
+	.shm_size = ((CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE)*1024), // default shm size
+	.SMwup = { {1, -1, IPC_NOWAIT} },
+	.SMwdn = { {0, 0}, {1, 0}, {1, +1} },
+#endif
+};
+
+#define G (*ptr_to_globals)
+#define INIT_G() do { \
+	SET_PTR_TO_GLOBALS(memcpy(xzalloc(sizeof(G)), &init_data, sizeof(init_data))); \
+} while (0)
+
+
+/* Options */
+enum {
+	OPTBIT_mark = 0, // -m
+	OPTBIT_nofork, // -n
+	OPTBIT_outfile, // -O
+	OPTBIT_loglevel, // -l
+	OPTBIT_small, // -S
+	USE_FEATURE_ROTATE_LOGFILE(OPTBIT_filesize   ,)	// -s
+	USE_FEATURE_ROTATE_LOGFILE(OPTBIT_rotatecnt  ,)	// -b
+	USE_FEATURE_REMOTE_LOG(    OPTBIT_remote     ,)	// -R
+	USE_FEATURE_REMOTE_LOG(    OPTBIT_locallog   ,)	// -L
+	USE_FEATURE_IPC_SYSLOG(    OPTBIT_circularlog,)	// -C
+	USE_FEATURE_SYSLOGD_DUP(   OPTBIT_dup        ,)	// -D
+
+	OPT_mark        = 1 << OPTBIT_mark    ,
+	OPT_nofork      = 1 << OPTBIT_nofork  ,
+	OPT_outfile     = 1 << OPTBIT_outfile ,
+	OPT_loglevel    = 1 << OPTBIT_loglevel,
+	OPT_small       = 1 << OPTBIT_small   ,
+	OPT_filesize    = USE_FEATURE_ROTATE_LOGFILE((1 << OPTBIT_filesize   )) + 0,
+	OPT_rotatecnt   = USE_FEATURE_ROTATE_LOGFILE((1 << OPTBIT_rotatecnt  )) + 0,
+	OPT_remotelog   = USE_FEATURE_REMOTE_LOG(    (1 << OPTBIT_remote     )) + 0,
+	OPT_locallog    = USE_FEATURE_REMOTE_LOG(    (1 << OPTBIT_locallog   )) + 0,
+	OPT_circularlog = USE_FEATURE_IPC_SYSLOG(    (1 << OPTBIT_circularlog)) + 0,
+	OPT_dup         = USE_FEATURE_SYSLOGD_DUP(   (1 << OPTBIT_dup        )) + 0,
+};
+#define OPTION_STR "m:nO:l:S" \
+	USE_FEATURE_ROTATE_LOGFILE("s:" ) \
+	USE_FEATURE_ROTATE_LOGFILE("b:" ) \
+	USE_FEATURE_REMOTE_LOG(    "R:" ) \
+	USE_FEATURE_REMOTE_LOG(    "L"  ) \
+	USE_FEATURE_IPC_SYSLOG(    "C::") \
+	USE_FEATURE_SYSLOGD_DUP(   "D"  )
+#define OPTION_DECL *opt_m, *opt_l \
+	USE_FEATURE_ROTATE_LOGFILE(,*opt_s) \
+	USE_FEATURE_ROTATE_LOGFILE(,*opt_b) \
+	USE_FEATURE_IPC_SYSLOG(    ,*opt_C = NULL)
+#define OPTION_PARAM &opt_m, &G.logFilePath, &opt_l \
+	USE_FEATURE_ROTATE_LOGFILE(,&opt_s) \
+	USE_FEATURE_ROTATE_LOGFILE(,&opt_b) \
+	USE_FEATURE_REMOTE_LOG(    ,&G.remoteAddrStr) \
+	USE_FEATURE_IPC_SYSLOG(    ,&opt_C)
+
+
+/* circular buffer variables/structures */
+#if ENABLE_FEATURE_IPC_SYSLOG
+
+#if CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE < 4
+#error Sorry, you must set the syslogd buffer size to at least 4KB.
+#error Please check CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE
+#endif
+
+/* our shared key (syslogd.c and logread.c must be in sync) */
+enum { KEY_ID = 0x414e4547 }; /* "GENA" */
+
+static void ipcsyslog_cleanup(void)
+{
+	if (G.shmid != -1) {
+		shmdt(G.shbuf);
+	}
+	if (G.shmid != -1) {
+		shmctl(G.shmid, IPC_RMID, NULL);
+	}
+	if (G.s_semid != -1) {
+		semctl(G.s_semid, 0, IPC_RMID, 0);
+	}
+}
+
+static void ipcsyslog_init(void)
+{
+	if (DEBUG)
+		printf("shmget(%x, %d,...)\n", (int)KEY_ID, G.shm_size);
+
+	G.shmid = shmget(KEY_ID, G.shm_size, IPC_CREAT | 0644);
+	if (G.shmid == -1) {
+		bb_perror_msg_and_die("shmget");
+	}
+
+	G.shbuf = shmat(G.shmid, NULL, 0);
+	if (G.shbuf == (void*) -1L) { /* shmat has bizarre error return */
+		bb_perror_msg_and_die("shmat");
+	}
+
+	memset(G.shbuf, 0, G.shm_size);
+	G.shbuf->size = G.shm_size - offsetof(struct shbuf_ds, data) - 1;
+	/*G.shbuf->tail = 0;*/
+
+	// we'll trust the OS to set initial semval to 0 (let's hope)
+	G.s_semid = semget(KEY_ID, 2, IPC_CREAT | IPC_EXCL | 1023);
+	if (G.s_semid == -1) {
+		if (errno == EEXIST) {
+			G.s_semid = semget(KEY_ID, 2, 0);
+			if (G.s_semid != -1)
+				return;
+		}
+		bb_perror_msg_and_die("semget");
+	}
+}
+
+/* Write message to shared mem buffer */
+static void log_to_shmem(const char *msg, int len)
+{
+	int old_tail, new_tail;
+
+	if (semop(G.s_semid, G.SMwdn, 3) == -1) {
+		bb_perror_msg_and_die("SMwdn");
+	}
+
+	/* Circular Buffer Algorithm:
+	 * --------------------------
+	 * tail == position where to store next syslog message.
+	 * tail's max value is (shbuf->size - 1)
+	 * Last byte of buffer is never used and remains NUL.
+	 */
+	len++; /* length with NUL included */
+ again:
+	old_tail = G.shbuf->tail;
+	new_tail = old_tail + len;
+	if (new_tail < G.shbuf->size) {
+		/* store message, set new tail */
+		memcpy(G.shbuf->data + old_tail, msg, len);
+		G.shbuf->tail = new_tail;
+	} else {
+		/* k == available buffer space ahead of old tail */
+		int k = G.shbuf->size - old_tail;
+		/* copy what fits to the end of buffer, and repeat */
+		memcpy(G.shbuf->data + old_tail, msg, k);
+		msg += k;
+		len -= k;
+		G.shbuf->tail = 0;
+		goto again;
+	}
+	if (semop(G.s_semid, G.SMwup, 1) == -1) {
+		bb_perror_msg_and_die("SMwup");
+	}
+	if (DEBUG)
+		printf("tail:%d\n", G.shbuf->tail);
+}
+#else
+void ipcsyslog_cleanup(void);
+void ipcsyslog_init(void);
+void log_to_shmem(const char *msg);
+#endif /* FEATURE_IPC_SYSLOG */
+
+
+/* Print a message to the log file. */
+static void log_locally(time_t now, char *msg)
+{
+	struct flock fl;
+	int len = strlen(msg);
+
+#if ENABLE_FEATURE_IPC_SYSLOG
+	if ((option_mask32 & OPT_circularlog) && G.shbuf) {
+		log_to_shmem(msg, len);
+		return;
+	}
+#endif
+	if (G.logFD >= 0) {
+		/* Reopen log file every second. This allows admin
+		 * to delete the file and not worry about restarting us.
+		 * This costs almost nothing since it happens
+		 * _at most_ once a second.
+		 */
+		if (!now)
+			now = time(NULL);
+		if (G.last_log_time != now) {
+			G.last_log_time = now;
+			close(G.logFD);
+			goto reopen;
+		}
+	} else {
+ reopen:
+		G.logFD = open(G.logFilePath, O_WRONLY | O_CREAT
+					| O_NOCTTY | O_APPEND | O_NONBLOCK,
+					0666);
+		if (G.logFD < 0) {
+			/* cannot open logfile? - print to /dev/console then */
+			int fd = device_open(DEV_CONSOLE, O_WRONLY | O_NOCTTY | O_NONBLOCK);
+			if (fd < 0)
+				fd = 2; /* then stderr, dammit */
+			full_write(fd, msg, len);
+			if (fd != 2)
+				close(fd);
+			return;
+		}
+#if ENABLE_FEATURE_ROTATE_LOGFILE
+		{
+			struct stat statf;
+			G.isRegular = (fstat(G.logFD, &statf) == 0 && S_ISREG(statf.st_mode));
+			/* bug (mostly harmless): can wrap around if file > 4gb */
+			G.curFileSize = statf.st_size;
+		}
+#endif
+	}
+
+	fl.l_whence = SEEK_SET;
+	fl.l_start = 0;
+	fl.l_len = 1;
+	fl.l_type = F_WRLCK;
+	fcntl(G.logFD, F_SETLKW, &fl);
+
+#if ENABLE_FEATURE_ROTATE_LOGFILE
+	if (G.logFileSize && G.isRegular && G.curFileSize > G.logFileSize) {
+		if (G.logFileRotate) { /* always 0..99 */
+			int i = strlen(G.logFilePath) + 3 + 1;
+			char oldFile[i];
+			char newFile[i];
+			i = G.logFileRotate - 1;
+			/* rename: f.8 -> f.9; f.7 -> f.8; ... */
+			while (1) {
+				sprintf(newFile, "%s.%d", G.logFilePath, i);
+				if (i == 0) break;
+				sprintf(oldFile, "%s.%d", G.logFilePath, --i);
+				/* ignore errors - file might be missing */
+				rename(oldFile, newFile);
+			}
+			/* newFile == "f.0" now */
+			rename(G.logFilePath, newFile);
+			fl.l_type = F_UNLCK;
+			fcntl(G.logFD, F_SETLKW, &fl);
+			close(G.logFD);
+			goto reopen;
+		}
+		ftruncate(G.logFD, 0);
+	}
+	G.curFileSize +=
+#endif
+			full_write(G.logFD, msg, len);
+	fl.l_type = F_UNLCK;
+	fcntl(G.logFD, F_SETLKW, &fl);
+}
+
+static void parse_fac_prio_20(int pri, char *res20)
+{
+	const CODE *c_pri, *c_fac;
+
+	if (pri != 0) {
+		c_fac = facilitynames;
+		while (c_fac->c_name) {
+			if (c_fac->c_val != (LOG_FAC(pri) << 3)) {
+				c_fac++;
+				continue;
+			}
+			/* facility is found, look for prio */
+			c_pri = prioritynames;
+			while (c_pri->c_name) {
+				if (c_pri->c_val != LOG_PRI(pri)) {
+					c_pri++;
+					continue;
+				}
+				snprintf(res20, 20, "%s.%s",
+						c_fac->c_name, c_pri->c_name);
+				return;
+			}
+			/* prio not found, bail out */
+			break;
+		}
+		snprintf(res20, 20, "<%d>", pri);
+	}
+}
+
+/* len parameter is used only for "is there a timestamp?" check.
+ * NB: some callers cheat and supply len==0 when they know
+ * that there is no timestamp, short-circuiting the test. */
+static void timestamp_and_log(int pri, char *msg, int len)
+{
+	char *timestamp;
+	time_t now;
+
+	if (len < 16 || msg[3] != ' ' || msg[6] != ' '
+	 || msg[9] != ':' || msg[12] != ':' || msg[15] != ' '
+	) {
+		time(&now);
+		timestamp = ctime(&now) + 4; /* skip day of week */
+	} else {
+		now = 0;
+		timestamp = msg;
+		msg += 16;
+	}
+	timestamp[15] = '\0';
+
+	if (option_mask32 & OPT_small)
+		sprintf(G.printbuf, "%s %s\n", timestamp, msg);
+	else {
+		char res[20];
+		parse_fac_prio_20(pri, res);
+		sprintf(G.printbuf, "%s %.64s %s %s\n", timestamp, G.hostname, res, msg);
+	}
+
+	/* Log message locally (to file or shared mem) */
+	log_locally(now, G.printbuf);
+}
+
+static void timestamp_and_log_internal(const char *msg)
+{
+	if (ENABLE_FEATURE_REMOTE_LOG && !(option_mask32 & OPT_locallog))
+		return;
+	timestamp_and_log(LOG_SYSLOG | LOG_INFO, (char*)msg, 0);
+}
+
+/* tmpbuf[len] is a NUL byte (set by caller), but there can be other,
+ * embedded NULs. Split messages on each of these NULs, parse prio,
+ * escape control chars and log each locally. */
+static void split_escape_and_log(char *tmpbuf, int len)
+{
+	char *p = tmpbuf;
+
+	tmpbuf += len;
+	while (p < tmpbuf) {
+		char c;
+		char *q = G.parsebuf;
+		int pri = (LOG_USER | LOG_NOTICE);
+
+		if (*p == '<') {
+			/* Parse the magic priority number */
+			pri = bb_strtou(p + 1, &p, 10);
+			if (*p == '>')
+				p++;
+			if (pri & ~(LOG_FACMASK | LOG_PRIMASK))
+				pri = (LOG_USER | LOG_NOTICE);
+		}
+
+		while ((c = *p++)) {
+			if (c == '\n')
+				c = ' ';
+			if (!(c & ~0x1f) && c != '\t') {
+				*q++ = '^';
+				c += '@'; /* ^@, ^A, ^B... */
+			}
+			*q++ = c;
+		}
+		*q = '\0';
+
+		/* Now log it */
+		if (LOG_PRI(pri) < G.logLevel)
+			timestamp_and_log(pri, G.parsebuf, q - G.parsebuf);
+	}
+}
+
+static void quit_signal(int sig)
+{
+	timestamp_and_log_internal("syslogd exiting");
+	puts("syslogd exiting");
+	if (ENABLE_FEATURE_IPC_SYSLOG)
+		ipcsyslog_cleanup();
+	kill_myself_with_sig(sig);
+}
+
+#ifdef SYSLOGD_MARK
+static void do_mark(int sig)
+{
+	if (G.markInterval) {
+		timestamp_and_log_internal("-- MARK --");
+		alarm(G.markInterval);
+	}
+}
+#endif
+
+/* Don't inline: prevent struct sockaddr_un to take up space on stack
+ * permanently */
+static NOINLINE int create_socket(void)
+{
+	struct sockaddr_un sunx;
+	int sock_fd;
+	char *dev_log_name;
+
+	memset(&sunx, 0, sizeof(sunx));
+	sunx.sun_family = AF_UNIX;
+
+	/* Unlink old /dev/log or object it points to. */
+	/* (if it exists, bind will fail) */
+	strcpy(sunx.sun_path, "/dev/log");
+	dev_log_name = xmalloc_follow_symlinks("/dev/log");
+	if (dev_log_name) {
+		safe_strncpy(sunx.sun_path, dev_log_name, sizeof(sunx.sun_path));
+		free(dev_log_name);
+	}
+	unlink(sunx.sun_path);
+
+	sock_fd = xsocket(AF_UNIX, SOCK_DGRAM, 0);
+	xbind(sock_fd, (struct sockaddr *) &sunx, sizeof(sunx));
+	chmod("/dev/log", 0666);
+
+	return sock_fd;
+}
+
+#if ENABLE_FEATURE_REMOTE_LOG
+static int try_to_resolve_remote(void)
+{
+	if (!G.remoteAddr) {
+		unsigned now = monotonic_sec();
+
+		/* Don't resolve name too often - DNS timeouts can be big */
+		if ((now - G.last_dns_resolve) < DNS_WAIT_SEC)
+			return -1;
+		G.last_dns_resolve = now;
+		G.remoteAddr = host2sockaddr(G.remoteAddrStr, 514);
+		if (!G.remoteAddr)
+			return -1;
+	}
+	return socket(G.remoteAddr->u.sa.sa_family, SOCK_DGRAM, 0);
+}
+#endif
+
+static void do_syslogd(void) NORETURN;
+static void do_syslogd(void)
+{
+	int sock_fd;
+#if ENABLE_FEATURE_SYSLOGD_DUP
+	int last_sz = -1;
+	char *last_buf;
+	char *recvbuf = G.recvbuf;
+#else
+#define recvbuf (G.recvbuf)
+#endif
+
+	/* Set up signal handlers */
+	bb_signals(0
+		+ (1 << SIGINT)
+		+ (1 << SIGTERM)
+		+ (1 << SIGQUIT)
+		, quit_signal);
+	signal(SIGHUP, SIG_IGN);
+	/* signal(SIGCHLD, SIG_IGN); - why? */
+#ifdef SYSLOGD_MARK
+	signal(SIGALRM, do_mark);
+	alarm(G.markInterval);
+#endif
+	sock_fd = create_socket();
+
+	if (ENABLE_FEATURE_IPC_SYSLOG && (option_mask32 & OPT_circularlog)) {
+		ipcsyslog_init();
+	}
+
+	timestamp_and_log_internal("syslogd started: BusyBox v" BB_VER);
+
+	for (;;) {
+		ssize_t sz;
+
+#if ENABLE_FEATURE_SYSLOGD_DUP
+		last_buf = recvbuf;
+		if (recvbuf == G.recvbuf)
+			recvbuf = G.recvbuf + MAX_READ;
+		else
+			recvbuf = G.recvbuf;
+#endif
+ read_again:
+		sz = safe_read(sock_fd, recvbuf, MAX_READ - 1);
+		if (sz < 0)
+			bb_perror_msg_and_die("read from /dev/log");
+
+		/* Drop trailing '\n' and NULs (typically there is one NUL) */
+		while (1) {
+			if (sz == 0)
+				goto read_again;
+			/* man 3 syslog says: "A trailing newline is added when needed".
+			 * However, neither glibc nor uclibc do this:
+			 * syslog(prio, "test")   sends "test\0" to /dev/log,
+			 * syslog(prio, "test\n") sends "test\n\0".
+			 * IOW: newline is passed verbatim!
+			 * I take it to mean that it's syslogd's job
+			 * to make those look identical in the log files. */
+			if (recvbuf[sz-1] != '\0' && recvbuf[sz-1] != '\n')
+				break;
+			sz--;
+		}
+#if ENABLE_FEATURE_SYSLOGD_DUP
+		if ((option_mask32 & OPT_dup) && (sz == last_sz))
+			if (memcmp(last_buf, recvbuf, sz) == 0)
+				continue;
+		last_sz = sz;
+#endif
+#if ENABLE_FEATURE_REMOTE_LOG
+		/* We are not modifying log messages in any way before send */
+		/* Remote site cannot trust _us_ anyway and need to do validation again */
+		if (G.remoteAddrStr) {
+			if (-1 == G.remoteFD) {
+				G.remoteFD = try_to_resolve_remote();
+				if (-1 == G.remoteFD)
+					goto no_luck;
+			}
+			/* Stock syslogd sends it '\n'-terminated
+			 * over network, mimic that */
+			recvbuf[sz] = '\n';
+			/* send message to remote logger, ignore possible error */
+			/* TODO: on some errors, close and set G.remoteFD to -1
+			 * so that DNS resolution and connect is retried? */
+			sendto(G.remoteFD, recvbuf, sz+1, MSG_DONTWAIT,
+				    &G.remoteAddr->u.sa, G.remoteAddr->len);
+ no_luck: ;
+		}
+#endif
+		if (!ENABLE_FEATURE_REMOTE_LOG || (option_mask32 & OPT_locallog)) {
+			recvbuf[sz] = '\0'; /* ensure it *is* NUL terminated */
+			split_escape_and_log(recvbuf, sz);
+		}
+	} /* for (;;) */
+#undef recvbuf
+}
+
+int syslogd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int syslogd_main(int argc UNUSED_PARAM, char **argv)
+{
+	char OPTION_DECL;
+
+	INIT_G();
+#if ENABLE_FEATURE_REMOTE_LOG
+	G.last_dns_resolve = monotonic_sec() - DNS_WAIT_SEC - 1;
+#endif
+
+	/* do normal option parsing */
+	opt_complementary = "=0"; /* no non-option params */
+	getopt32(argv, OPTION_STR, OPTION_PARAM);
+#ifdef SYSLOGD_MARK
+	if (option_mask32 & OPT_mark) // -m
+		G.markInterval = xatou_range(opt_m, 0, INT_MAX/60) * 60;
+#endif
+	//if (option_mask32 & OPT_nofork) // -n
+	//if (option_mask32 & OPT_outfile) // -O
+	if (option_mask32 & OPT_loglevel) // -l
+		G.logLevel = xatou_range(opt_l, 1, 8);
+	//if (option_mask32 & OPT_small) // -S
+#if ENABLE_FEATURE_ROTATE_LOGFILE
+	if (option_mask32 & OPT_filesize) // -s
+		G.logFileSize = xatou_range(opt_s, 0, INT_MAX/1024) * 1024;
+	if (option_mask32 & OPT_rotatecnt) // -b
+		G.logFileRotate = xatou_range(opt_b, 0, 99);
+#endif
+#if ENABLE_FEATURE_IPC_SYSLOG
+	if (opt_C) // -Cn
+		G.shm_size = xatoul_range(opt_C, 4, INT_MAX/1024) * 1024;
+#endif
+
+	/* If they have not specified remote logging, then log locally */
+	if (ENABLE_FEATURE_REMOTE_LOG && !(option_mask32 & OPT_remotelog))
+		option_mask32 |= OPT_locallog;
+
+	/* Store away localhost's name before the fork */
+	G.hostname = safe_gethostname();
+	*strchrnul(G.hostname, '.') = '\0';
+
+	if (!(option_mask32 & OPT_nofork)) {
+		bb_daemonize_or_rexec(DAEMON_CHDIR_ROOT, argv);
+	}
+	umask(0);
+	write_pidfile("/var/run/syslogd.pid");
+	do_syslogd();
+	/* return EXIT_SUCCESS; */
+}
+
+/* Clean up. Needed because we are included from syslogd_and_logger.c */
+#undef G
+#undef GLOBALS
+#undef INIT_G
+#undef OPTION_STR
+#undef OPTION_DECL
+#undef OPTION_PARAM
diff --git a/sysklogd/syslogd_and_logger.c b/sysklogd/syslogd_and_logger.c
new file mode 100644
index 0000000..51573bd
--- /dev/null
+++ b/sysklogd/syslogd_and_logger.c
@@ -0,0 +1,51 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * prioritynames[] and facilitynames[]
+ *
+ * Copyright (C) 2008 by Denys Vlasenko <vda.linux@gmail.com>
+ *
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+#define SYSLOG_NAMES
+#define SYSLOG_NAMES_CONST
+#include <syslog.h>
+
+#if 0
+/* For the record: with SYSLOG_NAMES <syslog.h> defines
+ * (not declares) the following:
+ */
+typedef struct _code {
+	/*const*/ char *c_name;
+	int c_val;
+} CODE;
+/*const*/ CODE prioritynames[] = {
+    { "alert", LOG_ALERT },
+...
+    { NULL, -1 }
+};
+/* same for facilitynames[] */
+
+/* This MUST occur only once per entire executable,
+ * therefore we can't just do it in syslogd.c and logger.c -
+ * there will be two copies of it.
+ *
+ * We cannot even do it in separate file and then just reference
+ * prioritynames[] from syslogd.c and logger.c - bare <syslog.h>
+ * will not emit extern decls for prioritynames[]! Attempts to
+ * emit "matching" struct _code declaration defeat the whole purpose
+ * of <syslog.h>.
+ *
+ * For now, syslogd.c and logger.c are simply compiled into
+ * one object file.
+ */
+#endif
+
+#if ENABLE_SYSLOGD
+#include "syslogd.c"
+#endif
+
+#if ENABLE_LOGGER
+#include "logger.c"
+#endif