Initial revisionXORG-STABLE

3 files changed, 719 insertions, 0 deletions

diff --git a/os/log.c b/os/log.c
new file mode 100644
index 000000000..e537f8c41
--- /dev/null
+++ b/os/log.c
@@ -0,0 +1,610 @@
+/*
+
+Copyright 1987, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,
+Copyright 1994 Quarterdeck Office Systems.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Digital and
+Quarterdeck not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+DIGITAL AND QUARTERDECK DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT
+OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE
+OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+
+/*
+ * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+/* $XFree86: xc/programs/Xserver/os/log.c,v 1.6 2003/11/07 13:45:27 tsi Exp $ */
+
+#include "Xos.h"
+#include <stdio.h>
+#include <time.h>
+#include <sys/stat.h>
+#include <stdarg.h>
+#include <stdlib.h>	/* for malloc() */
+#include <errno.h>
+
+#include "site.h"
+#include "opaque.h"
+
+
+#ifdef DDXOSVERRORF
+void (*OsVendorVErrorFProc)(const char *, va_list args) = NULL;
+#endif
+
+static FILE *logFile = NULL;
+static Bool logFlush = FALSE;
+static Bool logSync = FALSE;
+static int logVerbosity = DEFAULT_LOG_VERBOSITY;
+static int logFileVerbosity = DEFAULT_LOG_FILE_VERBOSITY;
+
+/* Buffer to information logged before the log file is opened. */
+static char *saveBuffer = NULL;
+static int bufferSize = 0, bufferUnused = 0, bufferPos = 0;
+static Bool needBuffer = TRUE;
+
+/* Prefix strings for log messages. */
+#ifndef X_UNKNOWN_STRING
+#define X_UNKNOWN_STRING		"(\?\?)"
+#endif
+#ifndef X_PROBE_STRING
+#define X_PROBE_STRING			"(--)"
+#endif
+#ifndef X_CONFIG_STRING
+#define X_CONFIG_STRING			"(**)"
+#endif
+#ifndef X_DEFAULT_STRING
+#define X_DEFAULT_STRING		"(==)"
+#endif
+#ifndef X_CMDLINE_STRING
+#define X_CMDLINE_STRING		"(++)"
+#endif
+#ifndef X_NOTICE_STRING
+#define X_NOTICE_STRING			"(!!)"
+#endif
+#ifndef X_ERROR_STRING
+#define X_ERROR_STRING			"(EE)"
+#endif
+#ifndef X_WARNING_STRING
+#define X_WARNING_STRING		"(WW)"
+#endif
+#ifndef X_INFO_STRING
+#define X_INFO_STRING			"(II)"
+#endif
+#ifndef X_NOT_IMPLEMENTED_STRING
+#define X_NOT_IMPLEMENTED_STRING	"(NI)"
+#endif
+
+/*
+ * LogInit is called to start logging to a file.  It is also called (with
+ * NULL arguments) when logging to a file is not wanted.  It must always be
+ * called, otherwise log messages will continue to accumulate in a buffer.
+ *
+ * %s, if present in the fname or backup strings, is expanded to the display
+ * string.
+ */
+
+const char *
+LogInit(const char *fname, const char *backup)
+{
+    char *logFileName = NULL;
+
+    if (fname && *fname) {
+	/* xalloc() can't be used yet. */
+	logFileName = malloc(strlen(fname) + strlen(display) + 1);
+	if (!logFileName)
+	    FatalError("Cannot allocate space for the log file name\n");
+	sprintf(logFileName, fname, display);
+
+	if (backup && *backup) {
+	    struct stat buf;
+
+	    if (!stat(logFileName, &buf) && S_ISREG(buf.st_mode)) {
+		char *suffix;
+		char *oldLog;
+
+		oldLog = malloc(strlen(logFileName) + strlen(backup) +
+				strlen(display) + 1);
+		suffix = malloc(strlen(backup) + strlen(display) + 1);
+		if (!oldLog || !suffix)
+		    FatalError("Cannot allocate space for the log file name\n");
+		sprintf(suffix, backup, display);
+		sprintf(oldLog, "%s%s", logFileName, suffix);
+		free(suffix);
+#ifdef __UNIXOS2__
+		remove(oldLog);
+#endif
+		if (rename(logFileName, oldLog) == -1) {
+		    FatalError("Cannot move old log file (\"%s\" to \"%s\"\n",
+			       logFileName, oldLog);
+		}
+		free(oldLog);
+	    }
+	}
+	if ((logFile = fopen(logFileName, "w")) == NULL)
+	    FatalError("Cannot open log file \"%s\"\n", logFileName);
+	setvbuf(logFile, NULL, _IONBF, 0);
+
+	/* Flush saved log information. */
+	if (saveBuffer && bufferSize > 0) {
+	    fwrite(saveBuffer, bufferPos, 1, logFile);
+	    fflush(logFile);
+	    fsync(fileno(logFile));
+	}
+    }
+
+    /*
+     * Unconditionally free the buffer, and flag that the buffer is no longer
+     * needed.
+     */
+    if (saveBuffer && bufferSize > 0) {
+	free(saveBuffer);	/* Must be free(), not xfree() */
+	saveBuffer = NULL;
+	bufferSize = 0;
+    }
+    needBuffer = FALSE;
+
+    return logFileName;
+}
+
+void
+LogClose()
+{
+    if (logFile) {
+	fclose(logFile);
+	logFile = NULL;
+    }
+}
+
+Bool
+LogSetParameter(LogParameter param, int value)
+{
+    switch (param) {
+    case XLOG_FLUSH:
+	logFlush = value ? TRUE : FALSE;
+	return TRUE;
+    case XLOG_SYNC:
+	logSync = value ? TRUE : FALSE;
+	return TRUE;
+    case XLOG_VERBOSITY:
+	logVerbosity = value;
+	return TRUE;
+    case XLOG_FILE_VERBOSITY:
+	logFileVerbosity = value;
+	return TRUE;
+    default:
+	return FALSE;
+    }
+}
+
+/* This function does the actual log message writes. */
+
+void
+LogVWrite(int verb, const char *f, va_list args)
+{
+    static char tmpBuffer[1024];
+    int len = 0;
+
+    /*
+     * Since a va_list can only be processed once, write the string to a
+     * buffer, and then write the buffer out to the appropriate output
+     * stream(s).
+     */
+    if (verb < 0 || logFileVerbosity >= verb || logVerbosity >= verb) {
+	vsnprintf(tmpBuffer, sizeof(tmpBuffer), f, args);
+	len = strlen(tmpBuffer);
+    }
+    if ((verb < 0 || logVerbosity >= verb) && len > 0)
+	fwrite(tmpBuffer, len, 1, stderr);
+    if ((verb < 0 || logFileVerbosity >= verb) && len > 0) {
+	if (logFile) {
+	    fwrite(tmpBuffer, len, 1, logFile);
+	    if (logFlush) {
+		fflush(logFile);
+		if (logSync)
+		    fsync(fileno(logFile));
+	    }
+	} else if (needBuffer) {
+	    /*
+	     * Note, this code is used before OsInit() has been called, so
+	     * xalloc() and friends can't be used.
+	     */
+	    if (len > bufferUnused) {
+		bufferSize += 1024;
+		bufferUnused += 1024;
+		if (saveBuffer)
+		    saveBuffer = realloc(saveBuffer, bufferSize);
+		else
+		    saveBuffer = malloc(bufferSize);
+		if (!saveBuffer)
+		    FatalError("realloc() failed while saving log messages\n");
+	    }
+	    bufferUnused -= len;
+	    memcpy(saveBuffer + bufferPos, tmpBuffer, len);
+	    bufferPos += len;
+	}
+    }
+}
+
+void
+LogWrite(int verb, const char *f, ...)
+{
+    va_list args;
+
+    va_start(args, f);
+    LogVWrite(verb, f, args);
+    va_end(args);
+}
+
+void
+LogVMessageVerb(MessageType type, int verb, const char *format, va_list args)
+{
+    const char *s  = X_UNKNOWN_STRING;
+    char *tmpBuf = NULL;
+
+    /* Ignore verbosity for X_ERROR */
+    if (logVerbosity >= verb || logFileVerbosity >= verb || type == X_ERROR) {
+	switch (type) {
+	case X_PROBED:
+	    s = X_PROBE_STRING;
+	    break;
+	case X_CONFIG:
+	    s = X_CONFIG_STRING;
+	    break;
+	case X_DEFAULT:
+	    s = X_DEFAULT_STRING;
+	    break;
+	case X_CMDLINE:
+	    s = X_CMDLINE_STRING;
+	    break;
+	case X_NOTICE:
+	    s = X_NOTICE_STRING;
+	    break;
+	case X_ERROR:
+	    s = X_ERROR_STRING;
+	    if (verb > 0)
+		verb = 0;
+	    break;
+	case X_WARNING:
+	    s = X_WARNING_STRING;
+	    break;
+	case X_INFO:
+	    s = X_INFO_STRING;
+	    break;
+	case X_NOT_IMPLEMENTED:
+	    s = X_NOT_IMPLEMENTED_STRING;
+	    break;
+	case X_UNKNOWN:
+	    s = X_UNKNOWN_STRING;
+	    break;
+	case X_NONE:
+	    s = NULL;
+	    break;
+	}
+
+	/*
+	 * Prefix the format string with the message type.  We do it this way
+	 * so that LogVWrite() is only called once per message.
+	 */
+	if (s) {
+	    tmpBuf = malloc(strlen(format) + strlen(s) + 1 + 1);
+	    /* Silently return if malloc fails here. */
+	    if (!tmpBuf)
+		return;
+	    sprintf(tmpBuf, "%s ", s);
+	    strcat(tmpBuf, format);
+	    LogVWrite(verb, tmpBuf, args);
+	    free(tmpBuf);
+	} else
+	    LogVWrite(verb, format, args);
+    }
+}
+
+/* Log message with verbosity level specified. */
+void
+LogMessageVerb(MessageType type, int verb, const char *format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    LogVMessageVerb(type, verb, format, ap);
+    va_end(ap);
+}
+
+/* Log a message with the standard verbosity level of 1. */
+void
+LogMessage(MessageType type, const char *format, ...)
+{
+    va_list ap;
+
+    va_start(ap, format);
+    LogVMessageVerb(type, 1, format, ap);
+    va_end(ap);
+}
+
+#ifdef __GNUC__
+static void AbortServer(void) __attribute__((noreturn));
+#endif
+
+static void
+AbortServer(void)
+{
+    OsCleanup(TRUE);
+    AbortDDX();
+    fflush(stderr);
+    if (CoreDump)
+	abort();
+    exit (1);
+}
+
+#ifndef AUDIT_PREFIX
+#define AUDIT_PREFIX "AUDIT: %s: %ld %s: "
+#endif
+#ifndef AUDIT_TIMEOUT
+#define AUDIT_TIMEOUT ((CARD32)(120 * 1000)) /* 2 mn */
+#endif
+
+static int nrepeat = 0;
+static int oldlen = -1;
+static OsTimerPtr auditTimer = NULL;
+
+void 
+FreeAuditTimer(void)
+{
+    if (auditTimer != NULL) {
+	/* Force output of pending messages */
+	TimerForce(auditTimer);
+	TimerFree(auditTimer);
+	auditTimer = NULL;
+    }
+}
+
+static char *
+AuditPrefix(void)
+{
+    time_t tm;
+    char *autime, *s;
+    char *tmpBuf;
+    int len;
+
+    time(&tm);
+    autime = ctime(&tm);
+    if ((s = strchr(autime, '\n')))
+	*s = '\0';
+    if ((s = strrchr(argvGlobal[0], '/')))
+	s++;
+    else
+	s = argvGlobal[0];
+    len = strlen(AUDIT_PREFIX) + strlen(autime) + 10 + strlen(s) + 1;
+    tmpBuf = malloc(len);
+    if (!tmpBuf)
+	return NULL;
+    snprintf(tmpBuf, len, AUDIT_PREFIX, autime, (unsigned long)getpid(), s);
+    return tmpBuf;
+}
+
+void
+AuditF(const char * f, ...)
+{
+    va_list args;
+
+    va_start(args, f);
+
+    VAuditF(f, args);
+    va_end(args);
+}
+
+static CARD32
+AuditFlush(OsTimerPtr timer, CARD32 now, pointer arg)
+{
+    char *prefix;
+
+    if (nrepeat > 0) {
+	prefix = AuditPrefix();
+	ErrorF("%slast message repeated %d times\n",
+	       prefix != NULL ? prefix : "", nrepeat);
+	nrepeat = 0;
+	if (prefix != NULL)
+	    free(prefix);
+	return AUDIT_TIMEOUT;
+    } else {
+	/* if the timer expires without anything to print, flush the message */
+	oldlen = -1;
+	return 0;
+    }
+}
+
+void
+VAuditF(const char *f, va_list args)
+{
+    char *prefix;
+    char buf[1024];
+    int len;
+    static char oldbuf[1024];
+
+    prefix = AuditPrefix();
+    len = vsnprintf(buf, sizeof(buf), f, args);
+
+    if (len == oldlen && strcmp(buf, oldbuf) == 0) {
+	/* Message already seen */
+	nrepeat++;
+    } else {
+	/* new message */
+	if (auditTimer != NULL)
+	    TimerForce(auditTimer);
+	ErrorF("%s%s", prefix != NULL ? prefix : "", buf);
+	strlcpy(oldbuf, buf, sizeof(oldbuf));
+	oldlen = len;
+	nrepeat = 0;
+	auditTimer = TimerSet(auditTimer, 0, AUDIT_TIMEOUT, AuditFlush, NULL);
+    }
+    if (prefix != NULL)
+	free(prefix);
+}
+
+void
+FatalError(const char *f, ...)
+{
+    va_list args;
+    static Bool beenhere = FALSE;
+
+    if (beenhere)
+	ErrorF("\nFatalError re-entered, aborting\n");
+    else
+	ErrorF("\nFatal server error:\n");
+
+    va_start(args, f);
+    VErrorF(f, args);
+    va_end(args);
+    ErrorF("\n");
+#ifdef DDXOSFATALERROR
+    if (!beenhere)
+	OsVendorFatalError();
+#endif
+#ifdef ABORTONFATALERROR
+    abort();
+#endif
+    if (!beenhere) {
+	beenhere = TRUE;
+	AbortServer();
+    } else
+	abort();
+    /*NOTREACHED*/
+}
+
+void
+VErrorF(const char *f, va_list args)
+{
+#ifdef DDXOSVERRORF
+    if (OsVendorVErrorFProc)
+	OsVendorVErrorFProc(f, args);
+    else
+	LogVWrite(-1, f, args);
+#else
+    LogVWrite(-1, f, args);
+#endif
+}
+
+void
+ErrorF(const char * f, ...)
+{
+    va_list args;
+
+    va_start(args, f);
+    VErrorF(f, args);
+    va_end(args);
+}
+
+/* A perror() workalike. */
+
+#ifndef NEED_STRERROR
+#ifdef SYSV
+#if !defined(ISC) || defined(ISC202) || defined(ISC22)
+#define NEED_STRERROR
+#endif
+#endif
+#endif
+
+#if defined(NEED_STRERROR) && !defined(strerror)
+extern char *sys_errlist[];
+extern int sys_nerr;
+#define strerror(n) \
+	((n) >= 0 && (n) < sys_nerr) ? sys_errlist[(n)] : "unknown error"
+#endif
+
+void
+Error(char *str)
+{
+    char *err = NULL;
+    int saveErrno = errno;
+
+    if (str) {
+	err = malloc(strlen(strerror(saveErrno)) + strlen(str) + 2 + 1);
+	if (!err)
+	    return;
+	sprintf(err, "%s: ", str);
+	strcat(err, strerror(saveErrno));
+	LogWrite(-1, err);
+    } else
+	LogWrite(-1, strerror(saveErrno));
+}
+
+void
+LogPrintMarkers()
+{
+    /* Show what the message marker symbols mean. */
+    ErrorF("Markers: ");
+    LogMessageVerb(X_PROBED, -1, "probed, ");
+    LogMessageVerb(X_CONFIG, -1, "from config file, ");
+    LogMessageVerb(X_DEFAULT, -1, "default setting,\n\t");
+    LogMessageVerb(X_CMDLINE, -1, "from command line, ");
+    LogMessageVerb(X_NOTICE, -1, "notice, ");
+    LogMessageVerb(X_INFO, -1, "informational,\n\t");
+    LogMessageVerb(X_WARNING, -1, "warning, ");
+    LogMessageVerb(X_ERROR, -1, "error, ");
+    LogMessageVerb(X_NOT_IMPLEMENTED, -1, "not implemented, ");
+    LogMessageVerb(X_UNKNOWN, -1, "unknown.\n");
+}
+
diff --git a/os/strlcat.c b/os/strlcat.c
new file mode 100644
index 000000000..cda5c6ab9
--- /dev/null
+++ b/os/strlcat.c
@@ -0,0 +1,57 @@
+/*	$OpenBSD: strlcat.c,v 1.10 2003/04/12 21:56:39 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND TODD C. MILLER DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER BE LIABLE
+ * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+/* $XFree86: xc/lib/misc/strlcat.c,v 1.1 2003/10/26 12:17:14 herrb Exp $ */
+
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Appends src to string dst of size siz (unlike strncat, siz is the
+ * full size of dst, not space left).  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
+ * Returns strlen(src) + MIN(siz, strlen(initial dst)).
+ * If retval >= siz, truncation occurred.
+ */
+size_t
+strlcat(char *dst, const char *src, size_t siz)
+{
+	register char *d = dst;
+	register const char *s = src;
+	register size_t n = siz;
+	size_t dlen;
+
+	/* Find the end of dst and adjust bytes left but don't go past end */
+	while (n-- != 0 && *d != '\0')
+		d++;
+	dlen = d - dst;
+	n = siz - dlen;
+
+	if (n == 0)
+		return(dlen + strlen(s));
+	while (*s != '\0') {
+		if (n != 1) {
+			*d++ = *s;
+			n--;
+		}
+		s++;
+	}
+	*d = '\0';
+
+	return(dlen + (s - src));	/* count does not include NUL */
+}
diff --git a/os/strlcpy.c b/os/strlcpy.c
new file mode 100644
index 000000000..14e45ef8c
--- /dev/null
+++ b/os/strlcpy.c
@@ -0,0 +1,52 @@
+/*	$OpenBSD: strlcpy.c,v 1.7 2003/04/12 21:56:39 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND TODD C. MILLER DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL TODD C. MILLER BE LIABLE
+ * FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+/* $XFree86: xc/lib/misc/strlcpy.c,v 1.1 2003/10/26 12:17:14 herrb Exp $ */
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Copy src to string dst of size siz.  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t
+strlcpy(char *dst, const char *src, size_t siz)
+{
+	register char *d = dst;
+	register const char *s = src;
+	register size_t n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0 && --n != 0) {
+		do {
+			if ((*d++ = *s++) == 0)
+				break;
+		} while (--n != 0);
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (siz != 0)
+			*d = '\0';		/* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return(s - src - 1);	/* count does not include NUL */
+}