9f5c13564c
* add sync method: Since file systems tend to have a inbuild caching mechansim we need to sync these caches at the end of session when using the fuse_fs server. Therefore each FUSE file system port has to implement a Fuse::sync_fs() function that executes the necessary actions if requested. * add symlink check * allow to check FUSE fs initialization This changes the private API of the FUSE implementation. The init_fs method now has to return true if the initialization was successful and otherwise false. All current users of the API are also changed accordingly. Fixes #1058.
96 lines
1.7 KiB
C++
96 lines
1.7 KiB
C++
/*
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* \brief libc_fuse_ext2
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* \author Josef Soentgen
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* \date 2013-11-11
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*/
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/*
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* Copyright (C) 2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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/* Genode includes */
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#include <base/printf.h>
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#include <util/string.h>
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#include <fuse.h>
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#include <fuse_private.h>
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/* libc includes */
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#include <stdlib.h>
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extern "C" {
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#include <fuse-ext2.h>
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#include <ext2fs/ext2fs.h>
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extern struct fuse_operations ext2fs_ops;
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struct fuse_chan *fc;
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struct fuse *fh;
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static ext2_filsys e2fs;
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static struct extfs_data extfs_data;
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}
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bool Fuse::init_fs(void)
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{
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PLOG("libc_fuse_ext2: try to mount /dev/blkdev...");
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int err = ext2fs_open("/dev/blkdev", EXT2_FLAG_RW, 0, 0, unix_io_manager, &e2fs);
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if (err) {
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PERR("libc_fuse_ext2: could not mount /dev/blkdev, error: %d", err);
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return false;
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}
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errcode_t rc = ext2fs_read_bitmaps(e2fs);
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if (rc) {
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PERR("libc_fuse_ext2: error while reading bitmaps");
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ext2fs_close(e2fs);
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return false;
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}
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extfs_data.debug = 0;
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extfs_data.silent = 0;
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extfs_data.force = 0;
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extfs_data.readonly = 0;
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extfs_data.last_flush = 0;
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extfs_data.mnt_point = "/";
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extfs_data.options = "";
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extfs_data.device = "/dev/blkdev";
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extfs_data.volname = "ext2_volume";
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extfs_data.e2fs = e2fs;
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fh = fuse_new(fc, NULL, &ext2fs_ops, sizeof (ext2fs_ops), &extfs_data);
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if (fh == 0) {
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PERR("libc_fuse_ext2: fuse_new() failed");
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return false;
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}
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return true;
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}
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void Fuse::deinit_fs(void)
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{
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PLOG("libc_fuse_ext2: unmount /dev/blkdev...");
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ext2fs_close(e2fs);
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}
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void Fuse::sync_fs(void)
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{
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PLOG("libc_fuse_ext2: sync file system...");
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ext2fs_flush(e2fs);
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}
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bool Fuse::support_symlinks(void)
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{
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return true;
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}
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