115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/* $NetBSD: pathfs.c,v 1.1 2012/01/18 23:12:21 nonaka Exp $ */
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/*-
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* Copyright (C) 2012 NONAKA Kimihiro <nonaka@netbsd.org>
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "boot.h"
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#include "pathfs.h"
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#include "unixdev.h"
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#include "compat_linux.h"
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__compactcall int
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pathfs_open(const char *path, struct open_file *fd)
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{
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if (strcmp(fd->f_dev->dv_name, "path"))
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return EINVAL;
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(void) ulseek((int)fd->f_devdata, 0L, SEEK_SET);
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return 0;
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}
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__compactcall int
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pathfs_read(struct open_file *fd, void *vbuf, size_t nbyte, size_t *resid)
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{
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char *buf = vbuf;
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size_t off = 0;
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ssize_t rsz;
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while (off < nbyte) {
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rsz = uread((int)fd->f_devdata, buf + off, nbyte - off);
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if (rsz < 0)
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return errno;
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if (rsz == 0)
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break;
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off += rsz;
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}
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*resid -= off;
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return 0;
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}
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__compactcall int
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pathfs_write(struct open_file *fd, void *vbuf, size_t size, size_t *resid)
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{
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return EROFS;
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}
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__compactcall off_t
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pathfs_seek(struct open_file *fd, off_t offset, int whence)
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{
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return ulseek((int)fd->f_devdata, offset, whence);
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}
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__compactcall int
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pathfs_close(struct open_file *fd)
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{
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return 0;
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}
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__compactcall int
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pathfs_stat(struct open_file *fd, struct stat *sb)
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{
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struct linux_stat lsb;
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int rv;
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rv = ufstat((int)fd->f_devdata, &lsb);
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if (rv < 0)
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return errno;
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sb->st_ino = lsb.lst_ino;
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sb->st_mode = lsb.lst_mode;
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sb->st_nlink = lsb.lst_nlink;
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sb->st_uid = lsb.lst_uid;
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sb->st_gid = lsb.lst_gid;
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sb->st_size = lsb.lst_size;
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sb->st_blksize = lsb.lst_blksize;
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sb->st_blocks = lsb.lst_blocks;
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sb->st_atime = lsb.lst_atime;
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sb->st_mtime = lsb.lst_mtime;
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sb->st_ctime = lsb.lst_ctime;
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return 0;
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}
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__compactcall void
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pathfs_ls(struct open_file *f, const char *pattern)
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{
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printf("Currently ls command is unsupported by pathfs.\n");
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}
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