+++ /dev/null
-/*
- * 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);
-}
projects / external / glibc.git / commitdiff