libntfs-3g/compat.c - platform_external_ntfs-3g - Gitiles

 /**
  * compat.c - Tweaks for Windows compatibility
  *
  * Copyright (c) 2002 Richard Russon
  * Copyright (c) 2002-2004 Anton Altaparmakov
  *
  * This program/include file is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as published
  * by the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program/include file is distributed in the hope that it will be
  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program (in the main directory of the NTFS-3G
  * distribution in the file COPYING); if not, write to the Free Software
  * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 #include "compat.h"

 #ifndef HAVE_FFS
 /**
  * ffs - Find the first set bit in an int
  * @x:
  *
  * Description...
  *
  * Returns:
  */
 int ffs(int x)
 {
 	int r = 1;

 	if (!x)
 		return 0;
 	if (!(x & 0xffff)) {
 		x >>= 16;
 		r += 16;
 	}
 	if (!(x & 0xff)) {
 		x >>= 8;
 		r += 8;
 	}
 	if (!(x & 0xf)) {
 		x >>= 4;
 		r += 4;
 	}
 	if (!(x & 3)) {
 		x >>= 2;
 		r += 2;
 	}
 	if (!(x & 1)) {
 		x >>= 1;
 		r += 1;
 	}
 	return r;
 }
 #endif /* HAVE_FFS */

 #ifndef HAVE_DAEMON
 /* ************************************************************
  *  From: src.opensolaris.org
  *  src/lib/libresolv2/common/bsd/daemon.c
  */
 /*
  * Copyright (c) 1997-2000 by Sun Microsystems, Inc.
  * All rights reserved.
  */

 #if defined(LIBC_SCCS) && !defined(lint)
 static const char sccsid[] = "@(#)daemon.c	8.1 (Berkeley) 6/4/93";
 static const char rcsid[] = "$Id: compat.c,v 1.1.1.1.2.1 2008-08-16 15:17:44 jpandre Exp $";
 #endif /* LIBC_SCCS and not lint */

 /*
  * Copyright (c) 1990, 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.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
  *	This product includes software developed by the University of
  *	California, Berkeley and its contributors.
  * 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.
  */

 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif

 int daemon(int nochdir, int noclose) {
 	int fd;

 	switch (fork()) {
 	case -1:
 		return (-1);
 	case 0:
 		break;
 	default:
 		_exit(0);
 	}

 	if (setsid() == -1)
 		return (-1);

 	if (!nochdir)
 		(void)chdir("/");

 	if (!noclose && (fd = open("/dev/null", O_RDWR, 0)) != -1) {
 		(void)dup2(fd, 0);
 		(void)dup2(fd, 1);
 		(void)dup2(fd, 2);
 		if (fd > 2)
 			(void)close (fd);
 	}
 	return (0);
 }
 /*
  *  End: src/lib/libresolv2/common/bsd/daemon.c
  *************************************************************/
 #endif /* HAVE_DAEMON */

 #ifndef HAVE_STRSEP
 /* ************************************************************
  *  From: src.opensolaris.org
  *  src/lib/libresolv2/common/bsd/strsep.c
  */
 /*
  * Copyright (c) 1997, by Sun Microsystems, Inc.
  * All rights reserved.
  */

 #if defined(LIBC_SCCS) && !defined(lint)
 static const char sccsid[] = "strsep.c	8.1 (Berkeley) 6/4/93";
 static const char rcsid[] = "$Id: compat.c,v 1.1.1.1.2.1 2008-08-16 15:17:44 jpandre Exp $";
 #endif /* LIBC_SCCS and not lint */

 /*
  * Copyright (c) 1990, 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.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
  *	This product includes software developed by the University of
  *	California, Berkeley and its contributors.
  * 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.
  */

 #ifdef HAVE_STRING_H
 #include <string.h>
 #endif
 #ifdef HAVE_STDIO_H
 #include <stdio.h>
 #endif

 /*
  * Get next token from string *stringp, where tokens are possibly-empty
  * strings separated by characters from delim.
  *
  * Writes NULs into the string at *stringp to end tokens.
  * delim need not remain constant from call to call.
  * On return, *stringp points past the last NUL written (if there might
  * be further tokens), or is NULL (if there are definitely no more tokens).
  *
  * If *stringp is NULL, strsep returns NULL.
  */
 char *strsep(char **stringp, const char *delim) {
 	char *s;
 	const char *spanp;
 	int c, sc;
 	char *tok;

 	if ((s = *stringp) == NULL)
 		return (NULL);
 	for (tok = s;;) {
 		c = *s++;
 		spanp = delim;
 		do {
 			if ((sc = *spanp++) == c) {
 				if (c == 0)
 					s = NULL;
 				else
 					s[-1] = 0;
 				*stringp = s;
 				return (tok);
 			}
 		} while (sc != 0);
 	}
 	/* NOTREACHED */
 }

 /*
  *  End: src/lib/libresolv2/common/bsd/strsep.c
  *************************************************************/
 #endif /* HAVE_STRSEP */
	/**
	* compat.c - Tweaks for Windows compatibility
	*
	* Copyright (c) 2002 Richard Russon
	* Copyright (c) 2002-2004 Anton Altaparmakov
	*
	* This program/include file is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as published
	* by the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program/include file is distributed in the hope that it will be
	* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program (in the main directory of the NTFS-3G
	* distribution in the file COPYING); if not, write to the Free Software
	* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	#include "compat.h"

	#ifndef HAVE_FFS
	/**
	* ffs - Find the first set bit in an int
	* @x:
	*
	* Description...
	*
	* Returns:
	*/
	int ffs(int x)
	{
	int r = 1;

	if (!x)
	return 0;
	if (!(x & 0xffff)) {
	x >>= 16;
	r += 16;
	}
	if (!(x & 0xff)) {
	x >>= 8;
	r += 8;
	}
	if (!(x & 0xf)) {
	x >>= 4;
	r += 4;
	}
	if (!(x & 3)) {
	x >>= 2;
	r += 2;
	}
	if (!(x & 1)) {
	x >>= 1;
	r += 1;
	}
	return r;
	}
	#endif /* HAVE_FFS */

	#ifndef HAVE_DAEMON
	/* ************************************************************
	* From: src.opensolaris.org
	* src/lib/libresolv2/common/bsd/daemon.c
	*/
	/*
	* Copyright (c) 1997-2000 by Sun Microsystems, Inc.
	* All rights reserved.
	*/

	#if defined(LIBC_SCCS) && !defined(lint)
	static const char sccsid[] = "@(#)daemon.c 8.1 (Berkeley) 6/4/93";
	static const char rcsid[] = "$Id: compat.c,v 1.1.1.1.2.1 2008-08-16 15:17:44 jpandre Exp $";
	#endif /* LIBC_SCCS and not lint */

	/*
	* Copyright (c) 1990, 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.
	* 3. All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the University of
	* California, Berkeley and its contributors.
	* 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.
	*/

	#ifdef HAVE_FCNTL_H
	#include <fcntl.h>
	#endif
	#ifdef HAVE_UNISTD_H
	#include <unistd.h>
	#endif

	int daemon(int nochdir, int noclose) {
	int fd;

	switch (fork()) {
	case -1:
	return (-1);
	case 0:
	break;
	default:
	_exit(0);
	}

	if (setsid() == -1)
	return (-1);

	if (!nochdir)
	(void)chdir("/");

	if (!noclose && (fd = open("/dev/null", O_RDWR, 0)) != -1) {
	(void)dup2(fd, 0);
	(void)dup2(fd, 1);
	(void)dup2(fd, 2);
	if (fd > 2)
	(void)close (fd);
	}
	return (0);
	}
	/*
	* End: src/lib/libresolv2/common/bsd/daemon.c
	*************************************************************/
	#endif /* HAVE_DAEMON */

	#ifndef HAVE_STRSEP
	/* ************************************************************
	* From: src.opensolaris.org
	* src/lib/libresolv2/common/bsd/strsep.c
	*/
	/*
	* Copyright (c) 1997, by Sun Microsystems, Inc.
	* All rights reserved.
	*/

	#if defined(LIBC_SCCS) && !defined(lint)
	static const char sccsid[] = "strsep.c 8.1 (Berkeley) 6/4/93";
	static const char rcsid[] = "$Id: compat.c,v 1.1.1.1.2.1 2008-08-16 15:17:44 jpandre Exp $";
	#endif /* LIBC_SCCS and not lint */

	/*
	* Copyright (c) 1990, 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.
	* 3. All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the University of
	* California, Berkeley and its contributors.
	* 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.
	*/

	#ifdef HAVE_STRING_H
	#include <string.h>
	#endif
	#ifdef HAVE_STDIO_H
	#include <stdio.h>
	#endif

	/*
	* Get next token from string *stringp, where tokens are possibly-empty
	* strings separated by characters from delim.
	*
	* Writes NULs into the string at *stringp to end tokens.
	* delim need not remain constant from call to call.
	* On return, *stringp points past the last NUL written (if there might
	* be further tokens), or is NULL (if there are definitely no more tokens).
	*
	* If *stringp is NULL, strsep returns NULL.
	*/
	char strsep(char stringp, const char delim) {
	char *s;
	const char *spanp;
	int c, sc;
	char *tok;

	if ((s = *stringp) == NULL)
	return (NULL);
	for (tok = s;;) {
	c = *s++;
	spanp = delim;
	do {
	if ((sc = *spanp++) == c) {
	if (c == 0)
	s = NULL;
	else
	s[-1] = 0;
	*stringp = s;
	return (tok);
	}
	} while (sc != 0);
	}
	/* NOTREACHED */
	}

	/*
	* End: src/lib/libresolv2/common/bsd/strsep.c
	*************************************************************/
	#endif /* HAVE_STRSEP */