ntfs-3g version 2010.3.6
[tomato.git] / release / src / router / ntfs-3g / libntfs-3g / compat.c
blob63114a48707886ed5836ceb6b0e1d7d3b6432776
1 /**
2 * compat.c - Tweaks for Windows compatibility
4 * Copyright (c) 2002 Richard Russon
5 * Copyright (c) 2002-2004 Anton Altaparmakov
7 * This program/include file is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as published
9 * by the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program/include file is distributed in the hope that it will be
13 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program (in the main directory of the NTFS-3G
19 * distribution in the file COPYING); if not, write to the Free Software
20 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
27 #include "compat.h"
29 #ifndef HAVE_FFS
30 /**
31 * ffs - Find the first set bit in an int
32 * @x:
34 * Description...
36 * Returns:
38 int ffs(int x)
40 int r = 1;
42 if (!x)
43 return 0;
44 if (!(x & 0xffff)) {
45 x >>= 16;
46 r += 16;
48 if (!(x & 0xff)) {
49 x >>= 8;
50 r += 8;
52 if (!(x & 0xf)) {
53 x >>= 4;
54 r += 4;
56 if (!(x & 3)) {
57 x >>= 2;
58 r += 2;
60 if (!(x & 1)) {
61 x >>= 1;
62 r += 1;
64 return r;
66 #endif /* HAVE_FFS */
68 #ifndef HAVE_DAEMON
69 /* ************************************************************
70 * From: src.opensolaris.org
71 * src/lib/libresolv2/common/bsd/daemon.c
74 * Copyright (c) 1997-2000 by Sun Microsystems, Inc.
75 * All rights reserved.
78 #if defined(LIBC_SCCS) && !defined(lint)
79 static const char sccsid[] = "@(#)daemon.c 8.1 (Berkeley) 6/4/93";
80 static const char rcsid[] = "$Id: compat.c,v 1.1.1.1.2.1 2008-08-16 15:17:44 jpandre Exp $";
81 #endif /* LIBC_SCCS and not lint */
84 * Copyright (c) 1990, 1993
85 * The Regents of the University of California. All rights reserved.
87 * Redistribution and use in source and binary forms, with or without
88 * modification, are permitted provided that the following conditions
89 * are met:
90 * 1. Redistributions of source code must retain the above copyright
91 * notice, this list of conditions and the following disclaimer.
92 * 2. Redistributions in binary form must reproduce the above copyright
93 * notice, this list of conditions and the following disclaimer in the
94 * documentation and/or other materials provided with the distribution.
95 * 3. All advertising materials mentioning features or use of this software
96 * must display the following acknowledgement:
97 * This product includes software developed by the University of
98 * California, Berkeley and its contributors.
99 * 4. Neither the name of the University nor the names of its contributors
100 * may be used to endorse or promote products derived from this software
101 * without specific prior written permission.
103 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
104 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
105 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
106 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
107 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
108 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
109 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
110 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
111 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
112 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
113 * SUCH DAMAGE.
116 #ifdef HAVE_FCNTL_H
117 #include <fcntl.h>
118 #endif
119 #ifdef HAVE_UNISTD_H
120 #include <unistd.h>
121 #endif
123 int daemon(int nochdir, int noclose) {
124 int fd;
126 switch (fork()) {
127 case -1:
128 return (-1);
129 case 0:
130 break;
131 default:
132 _exit(0);
135 if (setsid() == -1)
136 return (-1);
138 if (!nochdir)
139 (void)chdir("/");
141 if (!noclose && (fd = open("/dev/null", O_RDWR, 0)) != -1) {
142 (void)dup2(fd, 0);
143 (void)dup2(fd, 1);
144 (void)dup2(fd, 2);
145 if (fd > 2)
146 (void)close (fd);
148 return (0);
151 * End: src/lib/libresolv2/common/bsd/daemon.c
152 *************************************************************/
153 #endif /* HAVE_DAEMON */
155 #ifndef HAVE_STRSEP
156 /* ************************************************************
157 * From: src.opensolaris.org
158 * src/lib/libresolv2/common/bsd/strsep.c
161 * Copyright (c) 1997, by Sun Microsystems, Inc.
162 * All rights reserved.
165 #if defined(LIBC_SCCS) && !defined(lint)
166 static const char sccsid[] = "strsep.c 8.1 (Berkeley) 6/4/93";
167 static const char rcsid[] = "$Id: compat.c,v 1.1.1.1.2.1 2008-08-16 15:17:44 jpandre Exp $";
168 #endif /* LIBC_SCCS and not lint */
171 * Copyright (c) 1990, 1993
172 * The Regents of the University of California. All rights reserved.
174 * Redistribution and use in source and binary forms, with or without
175 * modification, are permitted provided that the following conditions
176 * are met:
177 * 1. Redistributions of source code must retain the above copyright
178 * notice, this list of conditions and the following disclaimer.
179 * 2. Redistributions in binary form must reproduce the above copyright
180 * notice, this list of conditions and the following disclaimer in the
181 * documentation and/or other materials provided with the distribution.
182 * 3. All advertising materials mentioning features or use of this software
183 * must display the following acknowledgement:
184 * This product includes software developed by the University of
185 * California, Berkeley and its contributors.
186 * 4. Neither the name of the University nor the names of its contributors
187 * may be used to endorse or promote products derived from this software
188 * without specific prior written permission.
190 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
191 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
192 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
193 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
194 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
195 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
196 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
197 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
198 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
199 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
200 * SUCH DAMAGE.
203 #ifdef HAVE_STRING_H
204 #include <string.h>
205 #endif
206 #ifdef HAVE_STDIO_H
207 #include <stdio.h>
208 #endif
211 * Get next token from string *stringp, where tokens are possibly-empty
212 * strings separated by characters from delim.
214 * Writes NULs into the string at *stringp to end tokens.
215 * delim need not remain constant from call to call.
216 * On return, *stringp points past the last NUL written (if there might
217 * be further tokens), or is NULL (if there are definitely no more tokens).
219 * If *stringp is NULL, strsep returns NULL.
221 char *strsep(char **stringp, const char *delim) {
222 char *s;
223 const char *spanp;
224 int c, sc;
225 char *tok;
227 if ((s = *stringp) == NULL)
228 return (NULL);
229 for (tok = s;;) {
230 c = *s++;
231 spanp = delim;
232 do {
233 if ((sc = *spanp++) == c) {
234 if (c == 0)
235 s = NULL;
236 else
237 s[-1] = 0;
238 *stringp = s;
239 return (tok);
241 } while (sc != 0);
243 /* NOTREACHED */
247 * End: src/lib/libresolv2/common/bsd/strsep.c
248 *************************************************************/
249 #endif /* HAVE_STRSEP */