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      1 /*	$NetBSD: v7fs_dirent.c,v 1.3 2022/02/11 10:55:15 hannken Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #if HAVE_NBTOOL_CONFIG_H
     33 #include "nbtool_config.h"
     34 #endif
     35 
     36 #include <sys/cdefs.h>
     37 __KERNEL_RCSID(0, "$NetBSD: v7fs_dirent.c,v 1.3 2022/02/11 10:55:15 hannken Exp $");
     38 #if defined _KERNEL_OPT
     39 #include "opt_v7fs.h"
     40 #endif
     41 
     42 #ifdef _KERNEL
     43 #include <sys/systm.h>
     44 #include <sys/param.h>
     45 #else
     46 #include <stdio.h>
     47 #include <string.h>
     48 #endif
     49 
     50 #include "v7fs.h"
     51 #include "v7fs_impl.h"
     52 #include "v7fs_endian.h"
     53 #include "v7fs_inode.h"
     54 #include "v7fs_dirent.h"
     55 
     56 #ifdef V7FS_DIRENT_DEBUG
     57 #define	DPRINTF(fmt, args...)	printf("%s: " fmt, __func__, ##args)
     58 #else
     59 #define	DPRINTF(fmt, args...)	((void)0)
     60 #endif
     61 
     62 bool
     63 v7fs_dirent_endian_convert(struct v7fs_self *fs, struct v7fs_dirent *dir, int n)
     64 {
     65 	struct v7fs_superblock *sb = &fs->superblock;
     66 	int i;
     67 	v7fs_ino_t ino;
     68 	bool ok = true;
     69 
     70 	for (i = 0; i < n; i++, dir++) {
     71 		ino = V7FS_VAL16(fs, dir->inode_number);
     72 		if (v7fs_inode_number_sanity(sb, ino)) {
     73 			DPRINTF("Invalid inode# %d %s\n", ino, dir->name);
     74 			ok = false;
     75 		}
     76 		dir->inode_number = ino;
     77 	}
     78 
     79 	return ok;
     80 }
     81 
     82 void
     83 v7fs_dirent_filename(char *dst/* size must be V7FS_NAME_MAX + 1 */,
     84     const char *src, size_t srclen)
     85 {
     86 
     87 	if (srclen > V7FS_NAME_MAX)
     88 		srclen = V7FS_NAME_MAX;
     89 
     90 	memset(dst, 0, V7FS_NAME_MAX + 1);
     91 	strncpy(dst, src, srclen);
     92 }
     93