Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 436 insertions, 0 deletions

diff --git a/REORG.TODO/misc/syslog.c b/REORG.TODO/misc/syslog.c
new file mode 100644
index 0000000000..6922ad685c
--- /dev/null
+++ b/REORG.TODO/misc/syslog.c
@@ -0,0 +1,436 @@
+/*
+ * 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 <sys/un.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 <libc-lock.h>
+#include <signal.h>
+#include <locale.h>
+
+#include <stdarg.h>
+
+#include <libio/iolibio.h>
+#include <math_ldbl_opt.h>
+
+#include <kernel-features.h>
+
+#define ftell(s) _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);
+#ifndef NO_SIGPIPE
+static void sigpipe_handler (int);
+#endif
+
+#ifndef send_flags
+# define send_flags 0
+#endif
+
+struct cleanup_arg
+{
+  void *buf;
+  struct sigaction *oldaction;
+};
+
+static void
+cancel_handler (void *ptr)
+{
+#ifndef NO_SIGPIPE
+  /* Restore the old signal handler.  */
+  struct cleanup_arg *clarg = (struct cleanup_arg *) ptr;
+
+  if (clarg != NULL && clarg->oldaction != NULL)
+    __sigaction (SIGPIPE, clarg->oldaction, NULL);
+#endif
+
+  /* Free the lock.  */
+  __libc_lock_unlock (syslog_lock);
+}
+
+
+/*
+ * 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_chk(pri, -1, fmt, ap);
+	va_end(ap);
+}
+ldbl_hidden_def (__syslog, syslog)
+ldbl_strong_alias (__syslog, syslog)
+
+void
+__syslog_chk(int pri, int flag, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	__vsyslog_chk(pri, flag, fmt, ap);
+	va_end(ap);
+}
+
+void
+__vsyslog_chk(int pri, int flag, 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 msgoff;
+#ifndef NO_SIGPIPE
+ 	struct sigaction action, oldaction;
+ 	int sigpipe;
+#endif
+	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);
+	    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_ptr);
+	    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.  */
+	    if (flag == -1)
+	      vfprintf (f, fmt, ap);
+	    else
+	      __vfprintf_chk (f, flag, 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];
+		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);
+
+#ifndef NO_SIGPIPE
+	/* 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;
+#endif
+
+	/* 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, send_flags) < 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, send_flags) < 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);
+		  }
+	      }
+	  }
+
+#ifndef NO_SIGPIPE
+	if (sigpipe == 0)
+		__sigaction (SIGPIPE, &oldaction, (struct sigaction *) NULL);
+#endif
+
+	/* End of critical section.  */
+	__libc_cleanup_pop (0);
+	__libc_lock_unlock (syslog_lock);
+
+	if (buf != failbuf)
+		free (buf);
+}
+libc_hidden_def (__vsyslog_chk)
+
+void
+__vsyslog(int pri, const char *fmt, va_list ap)
+{
+  __vsyslog_chk (pri, -1, fmt, ap);
+}
+ldbl_hidden_def (__vsyslog, vsyslog)
+ldbl_weak_alias (__vsyslog, vsyslog)
+
+static struct sockaddr_un 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.sun_family = AF_UNIX;
+			(void)strncpy(SyslogAddr.sun_path, _PATH_LOG,
+				      sizeof(SyslogAddr.sun_path));
+			if (LogStat & LOG_NDELAY) {
+			  LogFile = __socket(AF_UNIX, LogType | SOCK_CLOEXEC, 0);
+			  if (LogFile == -1)
+			    return;
+			}
+		}
+		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);
+}
+
+#ifndef NO_SIGPIPE
+static void
+sigpipe_handler (int signo)
+{
+  closelog_internal ();
+}
+#endif
+
+static void
+closelog_internal (void)
+{
+  if (!connected)
+    return;
+
+  __close (LogFile);
+  LogFile = -1;
+  connected = 0;
+}
+
+void
+closelog (void)
+{
+  /* 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 (int pmask)
+{
+	int omask;
+
+	omask = LogMask;
+	if (pmask != 0)
+		LogMask = pmask;
+	return (omask);
+}