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| -rw-r--r-- | misc/syslog.c | 414 |
1 files changed, 0 insertions, 414 deletions
diff --git a/misc/syslog.c b/misc/syslog.c deleted file mode 100644 index 6916356da7..0000000000 --- a/misc/syslog.c +++ /dev/null @@ -1,414 +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 8.4 (Berkeley) 3/18/94"; -#endif /* LIBC_SCCS and not lint */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/syslog.h> -#include <sys/uio.h> -#include <netdb.h> - -#include <errno.h> -#include <fcntl.h> -#include <paths.h> -#include <stdio.h> -#include <stdio_ext.h> -#include <string.h> -#include <time.h> -#include <unistd.h> -#include <stdlib.h> -#include <bits/libc-lock.h> -#include <signal.h> -#include <locale.h> - -#if __STDC__ -#include <stdarg.h> -#else -#include <varargs.h> -#endif - -#include <libio/iolibio.h> -#define ftell(s) INTUSE(_IO_ftell) (s) - -static int LogType = SOCK_DGRAM; /* type of socket connection */ -static int LogFile = -1; /* fd for log */ -static int connected; /* have done connect */ -static int LogStat; /* status bits, set by openlog() */ -static const char *LogTag; /* string to tag the entry with */ -static int LogFacility = LOG_USER; /* default facility code */ -static int LogMask = 0xff; /* mask of priorities to be logged */ -extern char *__progname; /* Program name, from crt0. */ - -/* Define the lock. */ -__libc_lock_define_initialized (static, syslog_lock) - -static void openlog_internal(const char *, int, int) internal_function; -static void closelog_internal(void); -static void sigpipe_handler (int); - - -struct cleanup_arg -{ - void *buf; - struct sigaction *oldaction; -}; - -static void -cancel_handler (void *ptr) -{ - /* Restore the old signal handler. */ - struct cleanup_arg *clarg = (struct cleanup_arg *) ptr; - - if (clarg != NULL && clarg->oldaction != NULL) - __sigaction (SIGPIPE, clarg->oldaction, NULL); - - /* Free the lock. */ - __libc_lock_unlock (syslog_lock); -} - - -/* - * 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); -} -libc_hidden_def (syslog) - -void -vsyslog(pri, fmt, ap) - int pri; - register const char *fmt; - va_list ap; -{ - struct tm now_tm; - time_t now; - int fd; - FILE *f; - char *buf = 0; - size_t bufsize = 0; - size_t prioff, msgoff; - struct sigaction action, oldaction; - int sigpipe; - int saved_errno = errno; - char failbuf[3 * sizeof (pid_t) + sizeof "out of memory []"]; - -#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; - } - - /* Check priority against setlogmask values. */ - if ((LOG_MASK (LOG_PRI (pri)) & LogMask) == 0) - return; - - /* Set default facility if none specified. */ - if ((pri & LOG_FACMASK) == 0) - pri |= LogFacility; - - /* Build the message in a memory-buffer stream. */ - f = open_memstream (&buf, &bufsize); - if (f == NULL) - { - /* We cannot get a stream. There is not much we can do but - emitting an error messages. */ - char numbuf[3 * sizeof (pid_t)]; - char *nump; - char *endp = __stpcpy (failbuf, "out of memory ["); - pid_t pid = __getpid (); - - nump = numbuf + sizeof (numbuf); - /* The PID can never be zero. */ - do - *--nump = '0' + pid % 10; - while ((pid /= 10) != 0); - - endp = __mempcpy (endp, nump, (numbuf + sizeof (numbuf)) - nump); - *endp++ = ']'; - *endp = '\0'; - buf = failbuf; - bufsize = endp - failbuf; - msgoff = 0; - } - else - { - __fsetlocking (f, FSETLOCKING_BYCALLER); - prioff = fprintf (f, "<%d>", pri); - (void) time (&now); - f->_IO_write_ptr += __strftime_l (f->_IO_write_ptr, - f->_IO_write_end - - f->_IO_write_ptr, - "%h %e %T ", - __localtime_r (&now, &now_tm), - &_nl_C_locobj); - msgoff = ftell (f); - if (LogTag == NULL) - LogTag = __progname; - if (LogTag != NULL) - fputs_unlocked (LogTag, f); - if (LogStat & LOG_PID) - fprintf (f, "[%d]", (int) __getpid ()); - if (LogTag != NULL) - { - putc_unlocked (':', f); - putc_unlocked (' ', f); - } - - /* Restore errno for %m format. */ - __set_errno (saved_errno); - - /* We have the header. Print the user's format into the - buffer. */ - vfprintf (f, fmt, ap); - - /* Close the memory stream; this will finalize the data - into a malloc'd buffer in BUF. */ - fclose (f); - } - - /* Output to stderr if requested. */ - if (LogStat & LOG_PERROR) { - struct iovec iov[2]; - register struct iovec *v = iov; - - v->iov_base = buf + msgoff; - v->iov_len = bufsize - msgoff; - /* Append a newline if necessary. */ - if (buf[bufsize - 1] != '\n') - { - ++v; - v->iov_base = (char *) "\n"; - v->iov_len = 1; - } - - __libc_cleanup_push (free, buf == failbuf ? NULL : buf); - - /* writev is a cancellation point. */ - (void)__writev(STDERR_FILENO, iov, v - iov + 1); - - __libc_cleanup_pop (0); - } - - /* Prepare for multiple users. We have to take care: open and - write are cancellation points. */ - struct cleanup_arg clarg; - clarg.buf = buf; - clarg.oldaction = NULL; - __libc_cleanup_push (cancel_handler, &clarg); - __libc_lock_lock (syslog_lock); - - /* Prepare for a broken connection. */ - memset (&action, 0, sizeof (action)); - action.sa_handler = sigpipe_handler; - sigemptyset (&action.sa_mask); - sigpipe = __sigaction (SIGPIPE, &action, &oldaction); - if (sigpipe == 0) - clarg.oldaction = &oldaction; - - /* Get connected, output the message to the local logger. */ - if (!connected) - openlog_internal(LogTag, LogStat | LOG_NDELAY, 0); - - /* If we have a SOCK_STREAM connection, also send ASCII NUL as - a record terminator. */ - if (LogType == SOCK_STREAM) - ++bufsize; - - if (!connected || __send(LogFile, buf, bufsize, 0) < 0) - { - if (connected) - { - /* Try to reopen the syslog connection. Maybe it went - down. */ - closelog_internal (); - openlog_internal(LogTag, LogStat | LOG_NDELAY, 0); - } - - if (!connected || __send(LogFile, buf, bufsize, 0) < 0) - { - closelog_internal (); /* attempt re-open next time */ - /* - * 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 (LogStat & LOG_CONS && - (fd = __open(_PATH_CONSOLE, O_WRONLY|O_NOCTTY, 0)) >= 0) - { - dprintf (fd, "%s\r\n", buf + msgoff); - (void)__close(fd); - } - } - } - - if (sigpipe == 0) - __sigaction (SIGPIPE, &oldaction, (struct sigaction *) NULL); - - /* End of critical section. */ - __libc_cleanup_pop (0); - __libc_lock_unlock (syslog_lock); - - if (buf != failbuf) - free (buf); -} -libc_hidden_def (vsyslog) - -static struct sockaddr SyslogAddr; /* AF_UNIX address of local logger */ - - -static void -internal_function -openlog_internal(const char *ident, int logstat, int logfac) -{ - if (ident != NULL) - LogTag = ident; - LogStat = logstat; - if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0) - LogFacility = logfac; - - int retry = 0; - while (retry < 2) { - 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, LogType, 0)) - == -1) - return; - (void)__fcntl(LogFile, F_SETFD, 1); - } - } - if (LogFile != -1 && !connected) - { - int old_errno = errno; - if (__connect(LogFile, &SyslogAddr, sizeof(SyslogAddr)) - == -1) - { - int saved_errno = errno; - int fd = LogFile; - LogFile = -1; - (void)__close(fd); - __set_errno (old_errno); - if (saved_errno == EPROTOTYPE) - { - /* retry with the other type: */ - LogType = (LogType == SOCK_DGRAM - ? SOCK_STREAM : SOCK_DGRAM); - ++retry; - continue; - } - } else - connected = 1; - } - break; - } -} - -void -openlog (const char *ident, int logstat, int logfac) -{ - /* Protect against multiple users and cancellation. */ - __libc_cleanup_push (cancel_handler, NULL); - __libc_lock_lock (syslog_lock); - - openlog_internal (ident, logstat, logfac); - - __libc_cleanup_pop (1); -} - -static void -sigpipe_handler (int signo) -{ - closelog_internal (); -} - -static void -closelog_internal() -{ - if (!connected) - return; - - __close (LogFile); - LogFile = -1; - connected = 0; -} - -void -closelog () -{ - /* Protect against multiple users and cancellation. */ - __libc_cleanup_push (cancel_handler, NULL); - __libc_lock_lock (syslog_lock); - - closelog_internal (); - LogTag = NULL; - LogType = SOCK_DGRAM; /* this is the default */ - - /* Free the lock. */ - __libc_cleanup_pop (1); -} - -/* setlogmask -- set the log mask level */ -int -setlogmask(pmask) - int pmask; -{ - int omask; - - omask = LogMask; - if (pmask != 0) - LogMask = pmask; - return (omask); -} |