82 lines
3.2 KiB
C
82 lines
3.2 KiB
C
/* $NetBSD: virtdir.h,v 1.3 2017/11/26 03:51:45 christos Exp $ */
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/*
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* Copyright © 2007 Alistair Crooks. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef VIRTDIR_H_
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#define VIRTDIR_H_ 20070405
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#include <sys/types.h>
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#include <sys/stat.h>
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/* this struct keeps a note of all the info related to a virtual directory entry */
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typedef struct virt_dirent_t {
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char *name; /* entry name - used as key */
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size_t namelen; /* length of name */
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char *d_name; /* component in this directory */
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char *tgt; /* any symlink target */
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size_t tgtlen; /* length of symlink target */
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uint8_t type; /* entry type - file, dir, lnk */
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ino_t ino; /* inode number */
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uint16_t select; /* selector */
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} virt_dirent_t;
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/* this defines the list of virtual directory entries,
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sorted in name alpha order */
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typedef struct virtdir_t {
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uint32_t c; /* count of entries */
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uint32_t size; /* size of allocated list */
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virt_dirent_t *v; /* list */
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char *rootdir; /* root directory of virtual fs */
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struct stat file; /* stat struct for file entries */
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struct stat dir; /* stat struct for dir entries */
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struct stat lnk; /* stat struct for symlinks */
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} virtdir_t;
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/* this struct is used to walk through directories */
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typedef struct VIRTDIR {
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char *dirname; /* directory name */
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size_t dirnamelen; /* length of directory name */
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virtdir_t *tp; /* the directory tree */
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size_t i; /* current offset in dir tree */
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} VIRTDIR;
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int virtdir_init(virtdir_t *, const char *, const struct stat *,
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const struct stat *, const struct stat *);
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int virtdir_add(virtdir_t *, const char *, size_t, uint8_t, const char *,
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size_t, uint16_t);
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virt_dirent_t *virtdir_find(virtdir_t *, const char *, size_t);
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VIRTDIR *openvirtdir(virtdir_t *, const char *);
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virt_dirent_t *readvirtdir(VIRTDIR *);
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void closevirtdir(VIRTDIR *);
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off_t virtdir_offset(const virtdir_t *, const virt_dirent_t *);
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#endif
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