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-rw-r--r--libc/misc/syslog/Makefile44
-rw-r--r--libc/misc/syslog/syslog.c349
2 files changed, 393 insertions, 0 deletions
diff --git a/libc/misc/syslog/Makefile b/libc/misc/syslog/Makefile
new file mode 100644
index 000000000..9b02fe86c
--- /dev/null
+++ b/libc/misc/syslog/Makefile
@@ -0,0 +1,44 @@
+# Makefile for uCLibc
+#
+# Copyright (C) 2000 by Lineo, inc.
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU Library 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
+#
+# Derived in part from the Linux-8086 C library, the GNU C Library, and several
+# other sundry sources. Files within this library are copyright by their
+# respective copyright holders.
+
+TOPDIR=../../
+include $(TOPDIR)Rules.mak
+LIBC=$(TOPDIR)libc.a
+
+CSRC=syslog.c
+COBJS=$(patsubst %.c,%.o, $(CSRC))
+OBJS=$(COBJS)
+
+all: $(OBJS) $(LIBC)
+
+$(LIBC): ar-target
+
+ar-target: $(OBJS)
+ $(AR) $(ARFLAGS) $(LIBC) $(OBJS)
+
+$(COBJS):
+ $(CC) $(CFLAGS) $< -c $*.c -o $*.o
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
+
+clean:
+ rm -f *.[oa] *~ core
+
diff --git a/libc/misc/syslog/syslog.c b/libc/misc/syslog/syslog.c
new file mode 100644
index 000000000..957712f61
--- /dev/null
+++ b/libc/misc/syslog/syslog.c
@@ -0,0 +1,349 @@
+/*
+ * Copyright (c) 1983, 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)syslog.c 8.4 (Berkeley) 3/18/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * SYSLOG -- print message on log file
+ *
+ * This routine looks a lot like printf, except that it outputs to the
+ * log file instead of the standard output. Also:
+ * adds a timestamp,
+ * prints the module name in front of the message,
+ * has some other formatting types (or will sometime),
+ * adds a newline on the end of the message.
+ *
+ * The output of this routine is intended to be read by syslogd(8).
+ *
+ * Author: Eric Allman
+ * Modified to use UNIX domain IPC by Ralph Campbell
+ * Patched March 12, 1996 by A. Ian Vogelesang <vogelesang@hdshq.com>
+ * - to correct the handling of message & format string truncation,
+ * - to visibly tag truncated records to facilitate
+ * investigation of such Bad Things with grep, and,
+ * - to correct the handling of case where "write"
+ * returns after writing only part of the message.
+ * Rewritten by Martin Mares <mj@atrey.karlin.mff.cuni.cz> on May 14, 1997
+ * - better buffer overrun checks.
+ * - special handling of "%m" removed as we use GNU sprintf which handles
+ * it automatically.
+ * - Major code cleanup.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/signal.h>
+#include <sys/syslog.h>
+#if 0
+#include "syslog.h"
+#include "pathnames.h"
+#endif
+
+#include <sys/uio.h>
+#include <sys/wait.h>
+#include <netdb.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <paths.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <signal.h>
+
+
+#if defined(_REENTRENT) || defined(_THREAD_SAFE)
+# include <pthread.h>
+
+extern int __writev( int, const struct iovec *, size_t);
+
+/* We need to initialize the mutex. For this we use a method provided
+ by pthread function 'pthread_once'. For this we need a once block. */
+static pthread_once__t _once_block = pthread_once_init;
+
+/* This is the mutex which protects the global environment of simultaneous
+ modifications. */
+static pthread_mutex_t _syslog_mutex;
+
+static void
+DEFUN_VOID(_init_syslog_mutex)
+{
+ pthread_mutex_init(&_syslog_mutex, pthread_mutexattr_default);
+}
+
+# define LOCK() \
+ do { pthread_once(&_once_block, _init_syslog_mutex);
+ pthread_mutex_lock(&_syslog_mutex); } while (0)
+# define UNLOCK() pthread_mutex_unlock(&_syslog_mutex)
+
+#else /* !_REENTRENT && !_THREAD_SAFE */
+
+# define LOCK()
+# define UNLOCK()
+
+#endif /* _REENTRENT || _THREAD_SAFE */
+
+
+static int LogFile = -1; /* fd for log */
+static int connected; /* have done connect */
+static int LogStat = 0; /* status bits, set by openlog() */
+static const char *LogTag = "syslog"; /* string to tag the entry with */
+static int LogFacility = LOG_USER; /* default facility code */
+static int LogMask = 0xff; /* mask of priorities to be logged */
+
+static void closelog_intern( int );
+void syslog( int, const char *, ...);
+void vsyslog( int, const char *, va_list );
+void openlog( const char *, int, int );
+void closelog( void );
+int setlogmask( int );
+
+static void
+closelog_intern(int to_default)
+{
+ LOCK();
+ (void) close(LogFile);
+ LogFile = -1;
+ connected = 0;
+ if (to_default)
+ {
+ LogStat = 0;
+ LogTag = "syslog";
+ LogFacility = LOG_USER;
+ LogMask = 0xff;
+ }
+ UNLOCK();
+}
+
+static void
+sigpipe_handler (int sig)
+{
+ closelog_intern (0);
+}
+
+/*
+ * syslog, vsyslog --
+ * print message on log file; output is intended for syslogd(8).
+ */
+void
+syslog(int pri, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsyslog(pri, fmt, ap);
+ va_end(ap);
+}
+
+void
+vsyslog( int pri, const char *fmt, va_list ap )
+{
+ register char *p;
+ char *last_chr, *head_end, *end, *stdp;
+ time_t now;
+ int fd, saved_errno;
+ int rc;
+ char tbuf[1024]; /* syslogd is unable to handle longer messages */
+
+ struct sigaction action, oldaction;
+ int sigpipe;
+ memset (&action, 0, sizeof (action));
+ action.sa_handler = sigpipe_handler;
+ sigemptyset (&action.sa_mask);
+ sigpipe = sigaction (SIGPIPE, &action, &oldaction);
+
+ saved_errno = errno;
+
+ LOCK();
+
+ /* See if we should just throw out this message. */
+ if (!(LogMask & LOG_MASK(LOG_PRI(pri))) || (pri &~ (LOG_PRIMASK|LOG_FACMASK)))
+ goto getout;
+ if (LogFile < 0 || !connected)
+ openlog(LogTag, LogStat | LOG_NDELAY, 0);
+
+ /* Set default facility if none specified. */
+ if ((pri & LOG_FACMASK) == 0)
+ pri |= LogFacility;
+
+ /* Build the message. We know the starting part of the message can take
+ * no longer than 64 characters plus length of the LogTag. So it's
+ * safe to test only LogTag and use normal sprintf everywhere else.
+ */
+ (void)time(&now);
+ stdp = p = tbuf + sprintf(tbuf, "<%d>%.15s ", pri, ctime(&now) + 4);
+ if (LogTag) {
+ if (strlen(LogTag) < sizeof(tbuf) - 64)
+ p += sprintf(p, "%s", LogTag);
+ else
+ p += sprintf(p, "<BUFFER OVERRUN ATTEMPT>");
+ }
+ if (LogStat & LOG_PID)
+ p += sprintf(p, "[%d]", getpid());
+ if (LogTag) {
+ *p++ = ':';
+ *p++ = ' ';
+ }
+ head_end = p;
+
+ /* We format the rest of the message. If the buffer becomes full, we mark
+ * the message as truncated. Note that we require at least 2 free bytes
+ * in the buffer as we might want to add "\r\n" there.
+ */
+
+ end = tbuf + sizeof(tbuf) - 1;
+ errno = saved_errno;
+ p += vsnprintf(p, end - p, fmt, ap);
+ if (p >= end || p < head_end) { /* Returned -1 in case of error... */
+ static char truncate_msg[12] = "[truncated] ";
+ memmove(head_end + sizeof(truncate_msg), head_end,
+ end - head_end - sizeof(truncate_msg));
+ memcpy(head_end, truncate_msg, sizeof(truncate_msg));
+ p = end - 1;
+ }
+ last_chr = p;
+
+ /* Output to stderr if requested. */
+ if (LogStat & LOG_PERROR) {
+ *last_chr = '\n';
+ (void)write(STDERR_FILENO, stdp, last_chr - stdp + 1);
+ }
+
+ /* Output the message to the local logger using NUL as a message delimiter. */
+ p = tbuf;
+ *last_chr = 0;
+ do {
+ rc = write(LogFile, p, last_chr + 1 - p);
+ if (rc < 0) {
+ if ((errno==EAGAIN) || (errno==EINTR))
+ rc=0;
+ else {
+ closelog_intern(0);
+ break;
+ }
+ }
+ p+=rc;
+ } while (p <= last_chr);
+ if (rc >= 0)
+ goto getout;
+
+ /*
+ * Output the message to the console; don't worry about blocking,
+ * if console blocks everything will. Make sure the error reported
+ * is the one from the syslogd failure.
+ */
+ /* should mode be `O_WRONLY | O_NOCTTY' ? -- Uli */
+ if (LogStat & LOG_CONS &&
+ (fd = open(_PATH_CONSOLE, O_WRONLY, 0)) >= 0) {
+ p = index(tbuf, '>') + 1;
+ last_chr[0] = '\r';
+ last_chr[1] = '\n';
+ (void)write(fd, p, last_chr - p + 2);
+ (void)close(fd);
+ }
+
+getout:
+ UNLOCK();
+ if (sigpipe == 0)
+ sigaction (SIGPIPE, &oldaction,
+ (struct sigaction *) NULL);
+}
+
+static struct sockaddr SyslogAddr; /* AF_UNIX address of local logger */
+/*
+ * OPENLOG -- open system log
+ */
+void
+openlog( const char *ident, int logstat, int logfac )
+{
+ LOCK();
+
+ if (ident != NULL)
+ LogTag = ident;
+ LogStat = logstat;
+ if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0)
+ LogFacility = logfac;
+ if (LogFile == -1) {
+ SyslogAddr.sa_family = AF_UNIX;
+ (void)strncpy(SyslogAddr.sa_data, _PATH_LOG,
+ sizeof(SyslogAddr.sa_data));
+ if (LogStat & LOG_NDELAY) {
+ if ((LogFile = socket(AF_UNIX, SOCK_STREAM, 0)) == -1){
+ UNLOCK();
+ return;
+ }
+/* fcntl(LogFile, F_SETFD, 1); */
+ }
+ }
+ if (LogFile != -1 && !connected &&
+#if 0
+ connect(LogFile, &SyslogAddr, sizeof(SyslogAddr.sa_family)+
+ strlen(SyslogAddr.sa_data)) != -1)
+#else
+ connect(LogFile, &SyslogAddr, sizeof(SyslogAddr) -
+ sizeof(SyslogAddr.sa_data) +
+ strlen(SyslogAddr.sa_data)) != -1)
+#endif
+ connected = 1;
+
+ UNLOCK();
+}
+
+/*
+ * CLOSELOG -- close the system log
+ */
+void
+closelog( void )
+{
+ closelog_intern(1);
+}
+
+/*
+ * SETLOGMASK -- set the log mask level
+ */
+int
+setlogmask( int pmask )
+{
+ int omask;
+
+ omask = LogMask;
+ LOCK();
+ if (pmask != 0)
+ LogMask = pmask;
+ UNLOCK();
+ return (omask);
+}