OpenSolaris Launch

1 files changed, 288 insertions, 0 deletions

diff --git a/usr/src/cmd/ttymon/tmlog.c b/usr/src/cmd/ttymon/tmlog.c
new file mode 100644
index 0000000000..5144c5b7f9
--- /dev/null
+++ b/usr/src/cmd/ttymon/tmlog.c
@@ -0,0 +1,288 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*
+ * error/logging/cleanup functions for ttymon.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <signal.h>
+#include <syslog.h>
+#include "ttymon.h"
+#include "tmstruct.h"
+#include "tmextern.h"
+
+# ifdef DEBUG
+extern FILE *Debugfp;
+# endif
+
+const char *appname = "ttymon";
+
+void
+openttymonlog(void)
+{
+	int	fd, ret;
+	char	logfile[MAXPATHLEN];
+	extern	char	*Tag;
+
+	/* the log file resides in /var/saf/pmtag/ */
+	(void) snprintf(logfile, sizeof (logfile), "%s%s/%s", LOGDIR, Tag,
+	    LOGFILE);
+
+	Logfp = NULL;
+	(void)close(0);
+	if ((fd = open(logfile, O_WRONLY|O_CREAT|O_APPEND,0444)) != -1) 
+		if ((ret = fcntl(fd, F_DUPFD, 3)) == 3) {
+			/* set close-on-exec flag */
+			if (fcntl(ret, F_SETFD, FD_CLOEXEC) == 0) {
+				Logfp = fdopen(ret, "a+");
+			}
+		}
+	if (!Logfp) {
+		cons_printf("ttymon cannot create log file \"%s\": %s\n",
+		    logfile, strerror(errno));
+		exit(1);
+	}
+	log(" ");
+	log("********** ttymon starting **********");
+
+#ifdef	DEBUG
+	log("fd(log)\t = %d", fileno(Logfp));
+#endif
+}
+
+static void
+roll_log()
+{
+	char logf[MAXPATHLEN];
+	char ologf[MAXPATHLEN];
+	char tlogf[MAXPATHLEN];
+	FILE *nlogfp;
+	struct stat buf;
+
+	(void) fprintf(Logfp, "Restarting log file\n");
+	(void) snprintf(logf, sizeof (logf), "%s%s/%s", LOGDIR, Tag, LOGFILE);
+
+	(void) snprintf(ologf, sizeof (ologf), "%s%s/%s", LOGDIR, Tag,
+	    OLOGFILE);
+
+	(void) snprintf(tlogf, sizeof (tlogf), "%s%s/%s", LOGDIR, Tag,
+	    TLOGFILE);
+
+	if (!stat(ologf, &buf) && rename(ologf, tlogf)) {
+		(void) fprintf(Logfp, "rename old to tmp file failed\n");
+	} else if (!stat(logf, &buf) && rename(logf, ologf)) {
+		(void) fprintf(Logfp, "rename log to old file failed\n");
+		/* Restore old log file */
+		if (!stat(tlogf, &buf) && rename(tlogf, ologf))
+			(void) fprintf(Logfp,
+			    "rename tmp to old file failed\n");
+	} else if (nlogfp = fopen(logf, "w")) {
+		(void) fclose(Logfp);
+		Logfp = nlogfp;
+		/* reset close-on-exec */
+		(void) fcntl(fileno(Logfp), F_SETFD, 1);
+	} else {
+		(void) fprintf(Logfp, "log file open failed\n");
+		/* Restore current and old log file */
+		if (!stat(ologf, &buf) && rename(ologf, logf))
+			(void) fprintf(Logfp,
+			    "rename old to log file failed\n");
+		else if (!stat(tlogf, &buf) && rename(tlogf, ologf))
+			(void) fprintf(Logfp,
+			    "rename tmp to old file failed\n");
+	}
+
+	(void) unlink(tlogf); /* remove any stale tmp logfile */
+}
+
+
+/*
+ * vlog(msg) - common message routine.
+ *	    - if Logfp is NULL, write message to stderr or CONSOLE
+ */
+static void
+vlog(const char *fmt, va_list ap)
+{
+	char *timestamp;	/* current time in readable form */
+	time_t clock;		/* current time in seconds */
+	int	fd;
+	struct stat buf;
+
+	if (Logfp) {
+		if ((fstat(fileno(Logfp), &buf) != -1) &&
+		    (buf.st_size >= Logmaxsz) && !Splflag) {
+			Splflag = 1;
+			roll_log();
+			Splflag = 0;
+		}
+
+		(void) time(&clock);
+		timestamp = ctime(&clock);
+		*(strchr(timestamp, '\n')) = '\0';
+		(void) fprintf(Logfp, "%s; %ld; ", timestamp, getpid());
+		(void) vfprintf(Logfp, fmt, ap);
+		if (fmt[strlen(fmt) - 1] != '\n')
+			(void) fputc('\n', Logfp);
+		(void) fflush(Logfp);
+	} else if (isatty(STDERR_FILENO)) {
+		(void) fprintf(stderr, "%s: ", appname);
+		(void) vfprintf(stderr, fmt, ap);
+		if (fmt[strlen(fmt) - 1] != '\n')
+			(void) fputc('\n', stderr);
+		(void) fflush(stderr);
+	} else if ((fd = open(CONSOLE, O_WRONLY|O_NOCTTY)) != -1) {
+		FILE *f = fdopen(fd, "w");
+
+		(void) fprintf(f, "%s: ", appname);
+		(void) vfprintf(f, fmt, ap);
+		if (fmt[strlen(fmt) - 1] != '\n')
+			(void) fputc('\n', f);
+		(void) fclose(f);
+	} else {
+		vsyslog(LOG_CRIT, fmt, ap);
+	}
+}
+
+/*
+ * log(fmt, ...) - put a message into the log file
+ *	    - if Logfp is NULL, write message to stderr or CONSOLE
+ */
+/*PRINTFLIKE1*/
+void
+log(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vlog(fmt, ap);
+	va_end(ap);
+}
+
+
+/*
+ * fatal(fmt, ...) - put a message into the log file, then exit.
+ */
+/*PRINTFLIKE1*/
+void
+fatal(const char *fmt, ...)
+{
+	if (fmt) {
+		va_list ap;
+		va_start(ap, fmt);
+		vlog(fmt, ap);
+		va_end(ap);
+	}
+	log("********** ttymon exiting ***********");
+	exit(1);
+}
+
+# ifdef DEBUG
+
+/*
+ * opendebug - open debugging file, sets global file pointer Debugfp
+ * 	arg:   getty - if TRUE, ttymon is in getty_mode and use a different
+ *		       debug file
+ */
+
+void
+opendebug(int getty_mode)
+{
+	int  fd, ret;
+	char	debugfile[BUFSIZ];
+	extern	char	*Tag;
+
+	if (!getty_mode) {
+		(void)strcpy(debugfile, LOGDIR);
+		(void)strcat(debugfile, Tag);
+		(void)strcat(debugfile, "/");
+		(void)strcat(debugfile, DBGFILE);
+		if ((Debugfp = fopen(debugfile, "a+")) == NULL)
+			fatal("open debug file failed");
+	}
+	else {
+		if ((fd = open(EX_DBG, O_WRONLY|O_APPEND|O_CREAT)) < 0)
+			fatal("open %s failed: %s", EX_DBG, errno);
+
+		if (fd >= 3) 
+			ret = fd;
+		else {
+			if ((ret = fcntl(fd, F_DUPFD, 3)) < 0)
+				fatal("F_DUPFD fcntl failed: %s",
+				    strerror(errno));
+
+		}
+		if ((Debugfp = fdopen(ret, "a+")) == NULL)
+			fatal("fdopen failed: %s", strerror(errno));
+
+		if (ret != fd)
+			(void)close(fd);
+	}
+	/* set close-on-exec flag */
+	if (fcntl(fileno(Debugfp), F_SETFD, 1) == -1)
+		fatal("F_SETFD fcntl failed: %s", strerror(errno));
+}
+
+/*
+ * debug(msg) - put a message into debug file
+ */
+
+void
+debug(const char *fmt, ...)
+{
+	va_list ap;
+	char *timestamp;	/* current time in readable form */
+	time_t clock;		/* current time in seconds */
+
+	(void) time(&clock);
+	timestamp = ctime(&clock);
+	*(strchr(timestamp, '\n')) = '\0';
+
+	(void) fprintf(Debugfp, "%s; %ld; ", timestamp, getpid());
+
+	va_start(ap, fmt);
+	(void) vfprintf(Debugfp, fmt, ap);
+	va_end(ap);
+
+	(void) fprintf(Debugfp, "\n");
+	(void) fflush(Debugfp);
+}
+#endif