From b367af204bc08846eba6cafafdc5ddb0c6dbbd16 Mon Sep 17 00:00:00 2001 From: "William F. Jolitz" Date: Wed, 26 Jun 1991 17:53:08 -0800 Subject: [PATCH] 386BSD 0.1 development Work on file usr/src/lib/libc/gen/syslog.c Co-Authored-By: Lynne Greer Jolitz Synthesized-from: 386BSD-0.1 --- usr/src/lib/libc/gen/syslog.c | 236 ++++++++++++++++++++++++++++++++++ 1 file changed, 236 insertions(+) create mode 100644 usr/src/lib/libc/gen/syslog.c diff --git a/usr/src/lib/libc/gen/syslog.c b/usr/src/lib/libc/gen/syslog.c new file mode 100644 index 0000000000..59212a7ee0 --- /dev/null +++ b/usr/src/lib/libc/gen/syslog.c @@ -0,0 +1,236 @@ +/* + * Copyright (c) 1983, 1988 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 5.34 (Berkeley) 6/26/91"; +#endif /* LIBC_SCCS and not lint */ + +#include +#include +#include +#include +#include +#include +#include +#include +#if __STDC__ +#include +#else +#include +#endif +#include +#include +#include +#include + +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 */ + +/* + * syslog, vsyslog -- + * print message on log file; output is intended for syslogd(8). + */ +void +#if __STDC__ +syslog(int pri, const char *fmt, ...) +#else +syslog(pri, fmt, va_alist) + int pri; + char *fmt; + va_dcl +#endif +{ + va_list ap; + +#if __STDC__ + va_start(ap, fmt); +#else + va_start(ap); +#endif + vsyslog(pri, fmt, ap); + va_end(ap); +} + +void +vsyslog(pri, fmt, ap) + int pri; + register const char *fmt; + va_list ap; +{ + register int cnt; + register char *p; + time_t now, time(); + int fd, saved_errno; + char tbuf[2048], fmt_cpy[1024], *stdp, *ctime(); + + /* check for invalid bits or no priority set */ + if (!LOG_PRI(pri) || (pri &~ (LOG_PRIMASK|LOG_FACMASK)) || + !(LOG_MASK(pri) & LogMask)) + return; + + saved_errno = errno; + + /* set default facility if none specified */ + if ((pri & LOG_FACMASK) == 0) + pri |= LogFacility; + + /* build the message */ + (void)time(&now); + (void)sprintf(tbuf, "<%d>%.15s ", pri, ctime(&now) + 4); + for (p = tbuf; *p; ++p); + if (LogStat & LOG_PERROR) + stdp = p; + if (LogTag) { + (void)strcpy(p, LogTag); + for (; *p; ++p); + } + if (LogStat & LOG_PID) { + (void)sprintf(p, "[%d]", getpid()); + for (; *p; ++p); + } + if (LogTag) { + *p++ = ':'; + *p++ = ' '; + } + + /* substitute error message for %m */ + { + register char ch, *t1, *t2; + char *strerror(); + + for (t1 = fmt_cpy; ch = *fmt; ++fmt) + if (ch == '%' && fmt[1] == 'm') { + ++fmt; + for (t2 = strerror(saved_errno); + *t1 = *t2++; ++t1); + } + else + *t1++ = ch; + *t1 = '\0'; + } + + (void)vsprintf(p, fmt_cpy, ap); + + cnt = strlen(tbuf); + + /* output to stderr if requested */ + if (LogStat & LOG_PERROR) { + struct iovec iov[2]; + register 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 (!connected) + openlog(LogTag, LogStat | LOG_NDELAY, 0); + if (send(LogFile, tbuf, cnt, 0) >= 0) + return; + + /* see if should attempt the console */ + if (!(LogStat&LOG_CONS)) + return; + + /* + * 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. + */ + if ((fd = open(_PATH_CONSOLE, O_WRONLY, 0)) >= 0) { + (void)strcat(tbuf, "\r\n"); + cnt += 2; + p = index(tbuf, '>') + 1; + (void)write(fd, p, cnt - (p - tbuf)); + (void)close(fd); + } +} + +static struct sockaddr SyslogAddr; /* AF_UNIX address of local logger */ + +void +openlog(ident, logstat, logfac) + const char *ident; + int logstat, logfac; +{ + 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_DGRAM, 0)) == -1) + return; + (void)fcntl(LogFile, F_SETFD, 1); + } + } + if (LogFile != -1 && !connected) + if (connect(LogFile, &SyslogAddr, sizeof(SyslogAddr)) == -1) { + (void)close(LogFile); + LogFile = -1; + } else + connected = 1; +} + +void +closelog() +{ + (void)close(LogFile); + LogFile = -1; + connected = 0; +} + +/* setlogmask -- set the log mask level */ +setlogmask(pmask) + int pmask; +{ + int omask; + + omask = LogMask; + if (pmask != 0) + LogMask = pmask; + return (omask); +} -- 2.20.1