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-rw-r--r--lib/libc/gen/syslog.c435
1 files changed, 0 insertions, 435 deletions
diff --git a/lib/libc/gen/syslog.c b/lib/libc/gen/syslog.c
deleted file mode 100644
index 594fb97..0000000
--- a/lib/libc/gen/syslog.c
+++ /dev/null
@@ -1,435 +0,0 @@
-/*
- * 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.
- * 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 8.5 (Berkeley) 4/29/95";
-#endif /* LIBC_SCCS and not lint */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include "namespace.h"
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/syslog.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <netdb.h>
-
-#include <errno.h>
-#include <fcntl.h>
-#include <paths.h>
-#include <pthread.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#include <stdarg.h>
-#include "un-namespace.h"
-
-#include "libc_private.h"
-
-static int LogFile = -1; /* fd for log */
-static int status; /* connection status */
-static int opened; /* have done openlog() */
-static int LogStat = 0; /* status bits, set by openlog() */
-static const char *LogTag = NULL; /* 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 pthread_mutex_t syslog_mutex = PTHREAD_MUTEX_INITIALIZER;
-
-#define THREAD_LOCK() \
- do { \
- if (__isthreaded) _pthread_mutex_lock(&syslog_mutex); \
- } while(0)
-#define THREAD_UNLOCK() \
- do { \
- if (__isthreaded) _pthread_mutex_unlock(&syslog_mutex); \
- } while(0)
-
-static void disconnectlog(void); /* disconnect from syslogd */
-static void connectlog(void); /* (re)connect to syslogd */
-static void openlog_unlocked(const char *, int, int);
-
-enum {
- NOCONN = 0,
- CONNDEF,
- CONNPRIV,
-};
-
-/*
- * Format of the magic cookie passed through the stdio hook
- */
-struct bufcookie {
- char *base; /* start of buffer */
- int left;
-};
-
-/*
- * stdio write hook for writing to a static string buffer
- * XXX: Maybe one day, dynamically allocate it so that the line length
- * is `unlimited'.
- */
-static int
-writehook(void *cookie, const char *buf, int len)
-{
- struct bufcookie *h; /* private `handle' */
-
- h = (struct bufcookie *)cookie;
- if (len > h->left) {
- /* clip in case of wraparound */
- len = h->left;
- }
- if (len > 0) {
- (void)memcpy(h->base, buf, len); /* `write' it. */
- h->base += len;
- h->left -= len;
- }
- return len;
-}
-
-/*
- * 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)
-{
- int cnt;
- char ch, *p;
- time_t now;
- int fd, saved_errno;
- char *stdp, tbuf[2048], fmt_cpy[1024], timbuf[26], errstr[64];
- FILE *fp, *fmt_fp;
- struct bufcookie tbuf_cookie;
- struct bufcookie fmt_cookie;
-
-#define INTERNALLOG LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
- /* Check for invalid bits. */
- if (pri & ~(LOG_PRIMASK|LOG_FACMASK)) {
- syslog(INTERNALLOG,
- "syslog: unknown facility/priority: %x", pri);
- pri &= LOG_PRIMASK|LOG_FACMASK;
- }
-
- saved_errno = errno;
-
- THREAD_LOCK();
-
- /* Check priority against setlogmask values. */
- if (!(LOG_MASK(LOG_PRI(pri)) & LogMask)) {
- THREAD_UNLOCK();
- return;
- }
-
- /* Set default facility if none specified. */
- if ((pri & LOG_FACMASK) == 0)
- pri |= LogFacility;
-
- /* Create the primary stdio hook */
- tbuf_cookie.base = tbuf;
- tbuf_cookie.left = sizeof(tbuf);
- fp = fwopen(&tbuf_cookie, writehook);
- if (fp == NULL) {
- THREAD_UNLOCK();
- return;
- }
-
- /* Build the message. */
- (void)time(&now);
- (void)fprintf(fp, "<%d>", pri);
- (void)fprintf(fp, "%.15s ", ctime_r(&now, timbuf) + 4);
- if (LogStat & LOG_PERROR) {
- /* Transfer to string buffer */
- (void)fflush(fp);
- stdp = tbuf + (sizeof(tbuf) - tbuf_cookie.left);
- }
- if (LogTag == NULL)
- LogTag = _getprogname();
- if (LogTag != NULL)
- (void)fprintf(fp, "%s", LogTag);
- if (LogStat & LOG_PID)
- (void)fprintf(fp, "[%d]", getpid());
- if (LogTag != NULL) {
- (void)fprintf(fp, ": ");
- }
-
- /* Check to see if we can skip expanding the %m */
- if (strstr(fmt, "%m")) {
-
- /* Create the second stdio hook */
- fmt_cookie.base = fmt_cpy;
- fmt_cookie.left = sizeof(fmt_cpy) - 1;
- fmt_fp = fwopen(&fmt_cookie, writehook);
- if (fmt_fp == NULL) {
- fclose(fp);
- THREAD_UNLOCK();
- return;
- }
-
- /*
- * Substitute error message for %m. Be careful not to
- * molest an escaped percent "%%m". We want to pass it
- * on untouched as the format is later parsed by vfprintf.
- */
- for ( ; (ch = *fmt); ++fmt) {
- if (ch == '%' && fmt[1] == 'm') {
- ++fmt;
- strerror_r(saved_errno, errstr, sizeof(errstr));
- fputs(errstr, fmt_fp);
- } else if (ch == '%' && fmt[1] == '%') {
- ++fmt;
- fputc(ch, fmt_fp);
- fputc(ch, fmt_fp);
- } else {
- fputc(ch, fmt_fp);
- }
- }
-
- /* Null terminate if room */
- fputc(0, fmt_fp);
- fclose(fmt_fp);
-
- /* Guarantee null termination */
- fmt_cpy[sizeof(fmt_cpy) - 1] = '\0';
-
- fmt = fmt_cpy;
- }
-
- (void)vfprintf(fp, fmt, ap);
- (void)fclose(fp);
-
- cnt = sizeof(tbuf) - tbuf_cookie.left;
-
- /* Remove a trailing newline */
- if (tbuf[cnt - 1] == '\n')
- cnt--;
-
- /* Output to stderr if requested. */
- if (LogStat & LOG_PERROR) {
- struct iovec iov[2];
- struct iovec *v = iov;
-
- v->iov_base = stdp;
- v->iov_len = cnt - (stdp - tbuf);
- ++v;
- v->iov_base = "\n";
- v->iov_len = 1;
- (void)_writev(STDERR_FILENO, iov, 2);
- }
-
- /* Get connected, output the message to the local logger. */
- if (!opened)
- openlog_unlocked(LogTag, LogStat | LOG_NDELAY, 0);
- connectlog();
-
- /*
- * If the send() failed, there are two likely scenarios:
- * 1) syslogd was restarted
- * 2) /var/run/log is out of socket buffer space, which
- * in most cases means local DoS.
- * We attempt to reconnect to /var/run/log to take care of
- * case #1 and keep send()ing data to cover case #2
- * to give syslogd a chance to empty its socket buffer.
- *
- * If we are working with a priveleged socket, then take
- * only one attempt, because we don't want to freeze a
- * critical application like su(1) or sshd(8).
- *
- */
-
- if (send(LogFile, tbuf, cnt, 0) < 0) {
- if (errno != ENOBUFS) {
- disconnectlog();
- connectlog();
- }
- do {
- _usleep(1);
- if (send(LogFile, tbuf, cnt, 0) >= 0) {
- THREAD_UNLOCK();
- return;
- }
- if (status == CONNPRIV)
- break;
- } while (errno == ENOBUFS);
- } else {
- THREAD_UNLOCK();
- return;
- }
-
- /*
- * Output the message to the console; try not to block
- * as a blocking console should not stop other processes.
- * Make sure the error reported is the one from the syslogd failure.
- */
- if (LogStat & LOG_CONS &&
- (fd = _open(_PATH_CONSOLE, O_WRONLY|O_NONBLOCK, 0)) >= 0) {
- struct iovec iov[2];
- struct iovec *v = iov;
-
- p = strchr(tbuf, '>') + 1;
- v->iov_base = p;
- v->iov_len = cnt - (p - tbuf);
- ++v;
- v->iov_base = "\r\n";
- v->iov_len = 2;
- (void)_writev(fd, iov, 2);
- (void)_close(fd);
- }
-
- THREAD_UNLOCK();
-}
-
-/* Should be called with mutex acquired */
-static void
-disconnectlog(void)
-{
- /*
- * If the user closed the FD and opened another in the same slot,
- * that's their problem. They should close it before calling on
- * system services.
- */
- if (LogFile != -1) {
- _close(LogFile);
- LogFile = -1;
- }
- status = NOCONN; /* retry connect */
-}
-
-/* Should be called with mutex acquired */
-static void
-connectlog(void)
-{
- struct sockaddr_un SyslogAddr; /* AF_UNIX address of local logger */
-
- if (LogFile == -1) {
- if ((LogFile = _socket(AF_UNIX, SOCK_DGRAM, 0)) == -1)
- return;
- (void)_fcntl(LogFile, F_SETFD, 1);
- }
- if (LogFile != -1 && status == NOCONN) {
- SyslogAddr.sun_len = sizeof(SyslogAddr);
- SyslogAddr.sun_family = AF_UNIX;
-
- /*
- * First try priveleged socket. If no success,
- * then try default socket.
- */
- (void)strncpy(SyslogAddr.sun_path, _PATH_LOG_PRIV,
- sizeof SyslogAddr.sun_path);
- if (_connect(LogFile, (struct sockaddr *)&SyslogAddr,
- sizeof(SyslogAddr)) != -1)
- status = CONNPRIV;
-
- if (status == NOCONN) {
- (void)strncpy(SyslogAddr.sun_path, _PATH_LOG,
- sizeof SyslogAddr.sun_path);
- if (_connect(LogFile, (struct sockaddr *)&SyslogAddr,
- sizeof(SyslogAddr)) != -1)
- status = CONNDEF;
- }
-
- if (status == NOCONN) {
- /*
- * Try the old "/dev/log" path, for backward
- * compatibility.
- */
- (void)strncpy(SyslogAddr.sun_path, _PATH_OLDLOG,
- sizeof SyslogAddr.sun_path);
- if (_connect(LogFile, (struct sockaddr *)&SyslogAddr,
- sizeof(SyslogAddr)) != -1)
- status = CONNDEF;
- }
-
- if (status == NOCONN) {
- (void)_close(LogFile);
- LogFile = -1;
- }
- }
-}
-
-static void
-openlog_unlocked(const char *ident, int logstat, int logfac)
-{
- if (ident != NULL)
- LogTag = ident;
- LogStat = logstat;
- if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0)
- LogFacility = logfac;
-
- if (LogStat & LOG_NDELAY) /* open immediately */
- connectlog();
-
- opened = 1; /* ident and facility has been set */
-}
-
-void
-openlog(const char *ident, int logstat, int logfac)
-{
- THREAD_LOCK();
- openlog_unlocked(ident, logstat, logfac);
- THREAD_UNLOCK();
-}
-
-
-void
-closelog(void)
-{
- THREAD_LOCK();
- (void)_close(LogFile);
- LogFile = -1;
- LogTag = NULL;
- status = NOCONN;
- THREAD_UNLOCK();
-}
-
-/* setlogmask -- set the log mask level */
-int
-setlogmask(int pmask)
-{
- int omask;
-
- THREAD_LOCK();
- omask = LogMask;
- if (pmask != 0)
- LogMask = pmask;
- THREAD_UNLOCK();
- return (omask);
-}
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