mirror of
https://github.com/fuse-friends/fuse-native
synced 2024-10-27 18:34:01 +00:00
added unmount + better example
This commit is contained in:
Andrew Osheroff
parent
d5747dd20f
commit
9121e8822c
84
example.js
Normal file
84
example.js
Normal file
@ -0,0 +1,84 @@
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const Fuse = require('./')
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const ops = {
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readdir: function (path, cb) {
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console.log('readdir(%s)', path)
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if (path === '/') return process.nextTick(cb, 0, ['test'])
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return process.nextTick(cb, 0)
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},
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/*
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access: function (path, cb) {
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return process.nextTick(cb, 0)
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},
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*/
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getattr: function (path, cb) {
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console.log('getattr(%s)', path)
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if (path === '/') {
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return process.nextTick(cb, 0, {
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mtime: new Date(),
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atime: new Date(),
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ctime: new Date(),
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nlink: 1,
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size: 100,
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mode: 16877,
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uid: process.getuid ? process.getuid() : 0,
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gid: process.getgid ? process.getgid() : 0
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})
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}
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if (path === '/test') {
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return process.nextTick(cb, 0, {
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mtime: new Date(),
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atime: new Date(),
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ctime: new Date(),
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nlink: 1,
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size: 12,
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mode: 33188,
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uid: process.getuid ? process.getuid() : 0,
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gid: process.getgid ? process.getgid() : 0
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})
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}
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return process.nextTick(cb, Fuse.ENOENT)
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},
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open: function (path, flags, cb) {
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console.log('open(%s, %d)', path, flags)
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return process.nextTick(cb, 0, 42) // 42 is an fd
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},
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read: function (path, fd, buf, len, pos, cb) {
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console.log('read(%s, %d, %d, %d)', path, fd, len, pos)
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var str = 'hello world\n'.slice(pos)
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if (!str) return process.nextTick(cb, 0)
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buf.write(str)
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return process.nextTick(cb, str.length)
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}
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}
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const fuse = new Fuse('./mnt', ops, { debug: true })
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fuse.mount(err => {
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if (err) throw err
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console.log('filesystem mounted on ' + fuse.mnt)
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})
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process.on('SIGINT', function () {
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fuse.unmount(err => {
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if (err) {
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console.log('filesystem at ' + fuse.mnt + ' not unmounted', err)
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} else {
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console.log('filesystem at ' + fuse.mnt + ' unmounted')
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}
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})
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})
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function emptyStat (mode) {
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return {
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mtime: new Date(),
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atime: new Date(),
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ctime: new Date(),
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nlink: 1,
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size: 100,
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mode: mode,
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uid: process.getuid ? process.getuid() : 0,
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gid: process.getgid ? process.getgid() : 0
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}
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}
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@ -90,6 +90,8 @@ typedef struct {
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napi_ref on_symlink;
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struct fuse *fuse;
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struct fuse_chan *ch;
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bool mounted;
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uv_async_t async;
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} fuse_thread_t;
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@ -637,7 +639,7 @@ NAPI_METHOD(fuse_native_signal_readdir) {
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}
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NAPI_METHOD(fuse_native_mount) {
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NAPI_ARGV(10)
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NAPI_ARGV(11)
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NAPI_ARGV_UTF8(mnt, 1024, 0);
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NAPI_ARGV_UTF8(mntopts, 1024, 1);
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@ -711,6 +713,8 @@ NAPI_METHOD(fuse_native_mount) {
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struct fuse *fuse = fuse_new(ch, &args, &ops, sizeof(struct fuse_operations), ft);
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ft->fuse = fuse;
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ft->ch = ch;
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ft->mounted = true;
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if (fuse == NULL) {
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napi_throw_error(env, "fuse failed", "fuse failed");
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@ -723,10 +727,27 @@ NAPI_METHOD(fuse_native_mount) {
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return NULL;
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}
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NAPI_METHOD(fuse_native_unmount) {
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NAPI_ARGV(2)
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NAPI_ARGV_UTF8(mnt, 1024, 0);
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NAPI_ARGV_BUFFER_CAST(fuse_thread_t *, ft, 1);
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if (ft != NULL && ft->mounted) {
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fuse_unmount(mnt, ft->ch);
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printf("joining\n");
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pthread_join(ft->thread, NULL);
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printf("joined\n");
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}
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ft->mounted = false;
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return NULL;
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}
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NAPI_INIT() {
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pthread_key_create(&(thread_locals_key), NULL); // TODO: add destructor
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NAPI_EXPORT_FUNCTION(fuse_native_mount)
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NAPI_EXPORT_FUNCTION(fuse_native_unmount)
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NAPI_EXPORT_FUNCTION(fuse_native_signal_path)
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NAPI_EXPORT_FUNCTION(fuse_native_signal_stat)
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NAPI_EXPORT_FUNCTION(fuse_native_signal_statfs)
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300
index.js
300
index.js
@ -1,5 +1,13 @@
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const binding = require('node-gyp-build')(__dirname)
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const os = require('os')
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const fs = require('fs')
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const path = require('path')
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const IS_OSX = os.platform() === 'darwin'
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const OSX_FOLDER_ICON = '/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/GenericFolderIcon.icns'
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const HAS_FOLDER_ICON = IS_OSX && fs.existsSync(OSX_FOLDER_ICON)
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const binding = require('node-gyp-build')(__dirname)
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const Opcodes = new Map([
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[ 'init', 0 ],
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[ 'error', 1 ],
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@ -41,12 +49,14 @@ const Opcodes = new Map([
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class Fuse {
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constructor (mnt, ops, opts = {}) {
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this.opts = opts
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this.mnt = path.resolve(mnt)
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this.ops = ops
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this.mnt = mnt
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this._thread = Buffer.alloc(binding.sizeof_fuse_thread_t)
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// Keep the process alive while fuse is mounted.
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this._timer = null
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const implemented = []
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const implemented = ['init', 'error', 'getattr']
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if (ops) {
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for (const [name, code] of Opcodes) {
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if (ops[name]) implemented.push(code)
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@ -58,6 +68,74 @@ class Fuse {
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this._sync = true
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}
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_withDefaultOps (cb) {
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const withDefaults = { ...this.ops }
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const callback = function (err) {
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callback = noop
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setImmediate(cb.bind(null, err))
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}
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var init = this.ops.init || call
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withDefaults.init = function (next) {
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console.log('IN INIT')
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callback()
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if (init.length > 1) init(this.mnt, next) // backwards compat for now
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else init(next)
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}
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var error = this.ops.error || call
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withDefaults.error = function (next) {
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console.log('IN ERROR')
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callback(new Error('Mount failed'))
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error(next)
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}
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if (!this.ops.getattr) { // we need this for unmount to work on osx
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withDefaults.getattr = function (path, cb) {
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if (path !== '/') return cb(Fuse.EPERM)
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cb(null, { mtime: new Date(0), atime: new Date(0), ctime: new Date(0), mode: 16877, size: 4096 })
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}
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}
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return withDefaults
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}
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_fuseOptions () {
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const options = []
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if ((/\*|(^,)fuse-bindings(,$)/.test(process.env.DEBUG)) || this.opts.debug) options.push('debug')
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if (this.opts.allowOther) options.push('allow_other')
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if (this.opts.allowRoot) options.push('allow_root')
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if (this.opts.autoUnmount) options.push('auto_unmount')
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if (this.opts.defaultPermissions) options.push('default_permissions')
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if (this.opts.blkdev) options.push('blkdev')
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if (this.opts.blksize) options.push('blksize=' + this.opts.blksize)
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if (this.opts.maxRead) options.push('max_read=' + this.opts.maxRead)
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if (this.opts.fd) options.push('fd=' + this.opts.fd)
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if (this.opts.userId) options.push('user_id=', this.opts.userId)
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if (this.opts.fsname) options.push('fsname=' + this.opts.fsname)
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if (this.opts.subtype) options.push('subtype=' + this.opts.subtype)
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if (this.opts.kernelCache) options.push('kernel_cache')
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if (this.opts.autoCache) options.push('auto_cache')
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if (this.opts.umask) options.push('umask=' + this.opts.umask)
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if (this.opts.uid) options.push('uid=' + this.opts.uid)
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if (this.opts.gid) options.push('gid=' + this.opts.gid)
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if (this.opts.entryTimeout) options.push('entry_timeout=' + this.opts.entryTimeout)
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if (this.opts.attrTimeout) options.push('attr_timeout=' + this.opts.attrTimeout)
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if (this.opts.acAttrTimeout) options.push('ac_attr_timeout=' + this.opts.acAttrTimeout)
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if (this.opts.noforget) options.push('noforget')
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if (this.opts.remember) options.push('remember=' + this.opts.remember)
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if (this.opts.modules) options.push('modules=' + this.opts.modules)
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if (this.opts.displayFolder && IS_OSX) { // only works on osx
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options.push('volname=' + path.basename(this.mnt))
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if (HAS_FOLDER_ICON) options.push('volicon=' + OSX_FOLDER_ICON)
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}
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return options.map(o => '-o' + o).join(' ')
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}
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_signal (signalFunc, args) {
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/*
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if (this._sync) process.nextTick(() => signalFunc.apply(null, args))
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@ -66,14 +144,43 @@ class Fuse {
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process.nextTick(() => signalFunc.apply(null, args))
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}
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mount () {
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binding.fuse_native_mount(this.mnt, '-odebug', this._thread, this,
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this.on_path_op, this.on_stat_op, this.on_fd_op, this.on_xattr_op,
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this.on_statfs, this.on_readdir, this.on_symlink)
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mount (cb) {
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this.ops = this._withDefaultOps(this.ops, cb)
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const opts = this._fuseOptions()
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fs.stat(this.mnt, (err, stat) => {
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if (err) return cb(new Error('Mountpoint does not exist'))
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if (!stat.isDirectory()) return cb(new Error('Mountpoint is not a directory'))
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fs.stat(path.join(this.mnt, '..'), (_, parent) => {
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if (parent && parent.dev !== stat.dev) return cb(new Error('Mountpoint in use'))
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try {
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// TODO: asyncify
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binding.fuse_native_mount(this.mnt, opts, this._thread, this,
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this.on_path_op, this.on_stat_op, this.on_fd_op, this.on_xattr_op,
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this.on_statfs, this.on_readdir, this.on_symlink)
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} catch (err) {
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return cb(err)
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}
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this._timer = setInterval(() => {}, 10000)
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return cb(null)
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})
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})
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}
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unmount () {
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binding.fuse_native_unmount(this.mnt)
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unmount (cb) {
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// TODO: asyncify
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try {
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binding.fuse_native_unmount(this.mnt, this._thread)
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} catch (err) {
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clearInterval(this._timer)
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return process.nextTick(cb, err)
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}
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clearInterval(this._timer)
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return process.nextTick(cb, null)
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}
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errno (code) {
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return (code && Fuse[code.toUpperCase()]) || -1
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}
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on_symlink (handle, op, path, target) {
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@ -201,6 +308,133 @@ class Fuse {
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}
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}
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Fuse.EPERM = -1
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Fuse.ENOENT = -2
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Fuse.ESRCH = -3
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Fuse.EINTR = -4
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Fuse.EIO = -5
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Fuse.ENXIO = -6
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Fuse.E2BIG = -7
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Fuse.ENOEXEC = -8
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Fuse.EBADF = -9
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Fuse.ECHILD = -10
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Fuse.EAGAIN = -11
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Fuse.ENOMEM = -12
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Fuse.EACCES = -13
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Fuse.EFAULT = -14
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Fuse.ENOTBLK = -15
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Fuse.EBUSY = -16
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Fuse.EEXIST = -17
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Fuse.EXDEV = -18
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Fuse.ENODEV = -19
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Fuse.ENOTDIR = -20
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Fuse.EISDIR = -21
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Fuse.EINVAL = -22
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Fuse.ENFILE = -23
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Fuse.EMFILE = -24
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Fuse.ENOTTY = -25
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Fuse.ETXTBSY = -26
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Fuse.EFBIG = -27
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Fuse.ENOSPC = -28
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Fuse.ESPIPE = -29
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Fuse.EROFS = -30
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Fuse.EMLINK = -31
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Fuse.EPIPE = -32
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Fuse.EDOM = -33
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Fuse.ERANGE = -34
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Fuse.EDEADLK = -35
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Fuse.ENAMETOOLONG = -36
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Fuse.ENOLCK = -37
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Fuse.ENOSYS = -38
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Fuse.ENOTEMPTY = -39
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Fuse.ELOOP = -40
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Fuse.EWOULDBLOCK = -11
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Fuse.ENOMSG = -42
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Fuse.EIDRM = -43
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Fuse.ECHRNG = -44
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Fuse.EL2NSYNC = -45
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Fuse.EL3HLT = -46
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Fuse.EL3RST = -47
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Fuse.ELNRNG = -48
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Fuse.EUNATCH = -49
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Fuse.ENOCSI = -50
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Fuse.EL2HLT = -51
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Fuse.EBADE = -52
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Fuse.EBADR = -53
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Fuse.EXFULL = -54
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Fuse.ENOANO = -55
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Fuse.EBADRQC = -56
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Fuse.EBADSLT = -57
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Fuse.EDEADLOCK = -35
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Fuse.EBFONT = -59
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Fuse.ENOSTR = -60
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Fuse.ENODATA = -61
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Fuse.ETIME = -62
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Fuse.ENOSR = -63
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Fuse.ENONET = -64
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Fuse.ENOPKG = -65
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Fuse.EREMOTE = -66
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Fuse.ENOLINK = -67
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Fuse.EADV = -68
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Fuse.ESRMNT = -69
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Fuse.ECOMM = -70
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Fuse.EPROTO = -71
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Fuse.EMULTIHOP = -72
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Fuse.EDOTDOT = -73
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Fuse.EBADMSG = -74
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Fuse.EOVERFLOW = -75
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Fuse.ENOTUNIQ = -76
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Fuse.EBADFD = -77
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Fuse.EREMCHG = -78
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Fuse.ELIBACC = -79
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Fuse.ELIBBAD = -80
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Fuse.ELIBSCN = -81
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Fuse.ELIBMAX = -82
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Fuse.ELIBEXEC = -83
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Fuse.EILSEQ = -84
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Fuse.ERESTART = -85
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Fuse.ESTRPIPE = -86
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Fuse.EUSERS = -87
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Fuse.ENOTSOCK = -88
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Fuse.EDESTADDRREQ = -89
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Fuse.EMSGSIZE = -90
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Fuse.EPROTOTYPE = -91
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Fuse.ENOPROTOOPT = -92
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Fuse.EPROTONOSUPPORT = -93
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Fuse.ESOCKTNOSUPPORT = -94
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Fuse.EOPNOTSUPP = -95
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Fuse.EPFNOSUPPORT = -96
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Fuse.EAFNOSUPPORT = -97
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Fuse.EADDRINUSE = -98
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Fuse.EADDRNOTAVAIL = -99
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Fuse.ENETDOWN = -100
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Fuse.ENETUNREACH = -101
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Fuse.ENETRESET = -102
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Fuse.ECONNABORTED = -103
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Fuse.ECONNRESET = -104
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Fuse.ENOBUFS = -105
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Fuse.EISCONN = -106
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Fuse.ENOTCONN = -107
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Fuse.ESHUTDOWN = -108
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Fuse.ETOOMANYREFS = -109
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Fuse.ETIMEDOUT = -110
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Fuse.ECONNREFUSED = -111
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Fuse.EHOSTDOWN = -112
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Fuse.EHOSTUNREACH = -113
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Fuse.EALREADY = -114
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Fuse.EINPROGRESS = -115
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Fuse.ESTALE = -116
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Fuse.EUCLEAN = -117
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Fuse.ENOTNAM = -118
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Fuse.ENAVAIL = -119
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Fuse.EISNAM = -120
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Fuse.EREMOTEIO = -121
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Fuse.EDQUOT = -122
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Fuse.ENOMEDIUM = -123
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Fuse.EMEDIUMTYPE = -124
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module.exports = Fuse
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function getStatfsArray (statfs) {
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const ints = new Uint32Array(11)
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@ -251,47 +485,5 @@ function getStatArray (stat) {
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return ints
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}
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function emptyStat (mode) {
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return {
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mtime: new Date(),
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atime: new Date(),
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ctime: new Date(),
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nlink: 1,
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size: 100,
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mode: mode,
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uid: process.getuid ? process.getuid() : 0,
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gid: process.getgid ? process.getgid() : 0
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}
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}
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const f = new Fuse('mnt', {
|
||||
getattr: (path, cb) => {
|
||||
if (path === '/') return cb(0, emptyStat(16877))
|
||||
return cb(0, emptyStat(33188))
|
||||
},
|
||||
access: (path, mode, cb) => {
|
||||
return cb(0, 0)
|
||||
},
|
||||
setxattr: (path, name, buffer, length, offset, cb) => {
|
||||
return cb(0)
|
||||
},
|
||||
utimens: (path, atim, mtim, cb) => {
|
||||
return cb(0)
|
||||
},
|
||||
readdir: (path, cb) => {
|
||||
if (path === '/') {
|
||||
return cb(0, ['a', 'b', 'c'], Array(3).fill('a').map(() => emptyStat(16877)))
|
||||
}
|
||||
return cb(0, [], [])
|
||||
}
|
||||
})
|
||||
f.mount()
|
||||
|
||||
setInterval(() => {
|
||||
if (global.gc) gc()
|
||||
}, 1000)
|
||||
|
||||
// setTimeout(function () {
|
||||
// foo = null
|
||||
// console.log('now!')
|
||||
// }, 5000)
|
||||
function noop () {}
|
||||
function call (cb) { cb() }
|
||||
|
||||
Loading…
Reference in New Issue
Block a user