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llfuse4js.cc
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/*
*
* llfuse4js.cc
*
* Copyright (c) 2012 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; only version 2 of the License, and no
* later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <node.h>
#include <node_buffer.h>
#include <v8.h>
#define FUSE_USE_VERSION 26
#define DEBUG
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <fuse.h>
#include <fuse/fuse_lowlevel.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <errno.h>
#include <sys/time.h>
#ifdef HAVE_SETXATTR
#include <sys/xattr.h>
#endif
#include <fuse.h>
#include <semaphore.h>
#include <string>
#include <iostream>
#include <sstream>
#include <stdlib.h>
using namespace v8;
extern void ConvertDate(Handle<Object> &stat,
std::string name,
struct timespec *out);
// ---------------------------------------------------------------------------
static struct {
bool enableFuseDebug;
char **extraArgv;
size_t extraArgc;
uv_async_t async;
sem_t *psem;
pthread_t fuse_thread;
std::string root;
Persistent<Object> handlers;
Persistent<Object> nodeBuffer;
} llf4js;
enum llfuseop_t {
OP_INIT = 0,
OP_DESTROY,
OP_LOOKUP,
OP_FORGET,
OP_GETATTR,
OP_SETATTR, /* 5 */
OP_READLINK,
OP_MKNOD,
OP_MKDIR,
OP_UNLINK,
OP_RMDIR, /* 10 */
OP_SYMLINK,
OP_RENAME,
OP_LINK,
OP_OPEN,
OP_READ, /* 15 */
OP_WRITE,
OP_FLUSH,
OP_RELEASE,
OP_FSYNC,
OP_OPENDIR, /* 20 */
OP_READDIR,
OP_RELEASEDIR,
OP_FSYNCDIR,
OP_STATFS,
OP_SETXATTR,/* 25 */
OP_GETXATTR,
OP_LISTXATTR,
OP_REMOVEXATTR,
OP_ACCESS,
OP_CREATE /* 30 */
};
const char* llfuseop_names[] = {
"init",
"destroy",
"lookup",
"forget",
"getattr",
"setattr",
"readlink",
"mknod",
"mkdir",
"unlink",
"rmdir",
"symlink",
"rename",
"link",
"open",
"read",
"write",
"flush",
"release",
"fsync",
"opendir",
"readdir",
"releasedir",
"fsyncdir",
"statfs",
"setxattr",
"getxattr",
"listxattr",
"removexattr",
"access",
"create",
};
static struct {
enum llfuseop_t op;
fuse_req_t req;
fuse_ino_t ino;
struct fuse_file_info *info;
union {
struct {
const char *name;
struct fuse_entry_param entry;
} lookup;
struct {
struct stat stbuf;
} getattr;
struct {
const char *name;
mode_t mode;
dev_t rdev;
} mknod;
struct {
const char *name;
mode_t mode;
} mkdir;
struct {
const char *name;
} unlink;
struct {
const char *name;
} rmdir;
struct {
const char *link;
const char *name;
} symlink;
struct {
const char *name;
ino_t newparent;
const char *newname;
} rename;
struct {
ino_t newparent;
const char *newname;
} link;
struct {
struct stat srcStbuf;
struct stat dstStbuf;
int to_set;
} setattr;
struct {
int mask;
} access;
struct {
size_t size;
off_t offset;
} readdir;
struct {
off_t offset;
size_t len;
const char *srcBuf;
} rw;
} u;
int retval;
} llf4js_cmd;
// ---------------------------------------------------------------------------
std::string llf4js_semaphore_name()
{
std::ostringstream o;
o << "llfuse4js" << getpid();
return o.str();
}
// ---------------------------------------------------------------------------
static int llf4js_rpc(fuse_req_t req, enum llfuseop_t op)
{
llf4js_cmd.req = req;
llf4js_cmd.op = op;
uv_async_send(&llf4js.async);
sem_wait(llf4js.psem);
return llf4js_cmd.retval;
}
// ---------------------------------------------------------------------------
void llf4js_init(void *user_data, struct fuse_conn_info *conn)
{
// We currently always return NULL
llf4js_rpc(NULL, OP_INIT);
}
// ---------------------------------------------------------------------------
void llf4js_destroy(void *user_data)
{
// We currently ignore the data pointer, which init() always sets to NULL
llf4js_rpc(NULL, OP_DESTROY);
}
// ---------------------------------------------------------------------------
static void llf4js_lookup(fuse_req_t req, fuse_ino_t parent, const char *name)
{
llf4js_cmd.ino = parent;
llf4js_cmd.u.lookup.name = name;
llf4js_rpc(req, OP_LOOKUP);
}
// ---------------------------------------------------------------------------
static void llf4js_forget(fuse_req_t req, fuse_ino_t ino, unsigned long nlookup)
{
llf4js_rpc(req, OP_FORGET);
}
// ---------------------------------------------------------------------------
static void llf4js_getattr(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_rpc(req, OP_GETATTR);
}
// ---------------------------------------------------------------------------
void llf4js_setattr(fuse_req_t req, fuse_ino_t ino, struct stat *attr,
int to_set, struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_cmd.u.setattr.srcStbuf = *attr;
llf4js_cmd.u.setattr.to_set = to_set;
llf4js_rpc(req, OP_SETATTR);
}
// ---------------------------------------------------------------------------
void llf4js_readlink(fuse_req_t req, fuse_ino_t ino)
{
llf4js_cmd.ino = ino;
llf4js_cmd.u.rw.offset = 0;
llf4js_cmd.u.rw.len = 4096;
llf4js_cmd.u.rw.srcBuf = NULL;
llf4js_rpc(req, OP_READLINK);
}
// ---------------------------------------------------------------------------
void llf4js_mknod(fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, dev_t rdev)
{
llf4js_cmd.ino = parent;
llf4js_cmd.u.mknod.name = name;
llf4js_cmd.u.mknod.mode = mode;
llf4js_cmd.u.mknod.rdev = rdev;
llf4js_rpc(req, OP_MKNOD);
}
// ---------------------------------------------------------------------------
void llf4js_mkdir(fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode)
{
llf4js_cmd.ino = parent;
llf4js_cmd.u.mkdir.name = name;
llf4js_cmd.u.mkdir.mode = mode;
llf4js_rpc(req, OP_MKDIR);
}
// ---------------------------------------------------------------------------
void llf4js_unlink(fuse_req_t req, fuse_ino_t parent, const char *name)
{
llf4js_cmd.ino = parent;
llf4js_cmd.u.unlink.name = name;
llf4js_rpc(req, OP_UNLINK);
}
// ---------------------------------------------------------------------------
void llf4js_rmdir(fuse_req_t req, fuse_ino_t parent, const char *name)
{
llf4js_cmd.ino = parent;
llf4js_cmd.u.rmdir.name = name;
llf4js_rpc(req, OP_RMDIR);
}
// ---------------------------------------------------------------------------
void llf4js_symlink(fuse_req_t req, const char *link, fuse_ino_t parent,
const char *name)
{
llf4js_cmd.ino = parent;
llf4js_cmd.u.symlink.link = link;
llf4js_cmd.u.symlink.name = name;
llf4js_rpc(req, OP_SYMLINK);
}
// ---------------------------------------------------------------------------
void llf4js_rename(fuse_req_t req, fuse_ino_t parent, const char *name,
fuse_ino_t newparent, const char *newname)
{
llf4js_cmd.ino = parent;
llf4js_cmd.u.rename.name = name;
llf4js_cmd.u.rename.newparent = newparent;
llf4js_cmd.u.rename.newname = newname;
llf4js_rpc(req, OP_RENAME);
}
// ---------------------------------------------------------------------------
void llf4js_link(fuse_req_t req, fuse_ino_t ino, fuse_ino_t newparent,
const char *newname)
{
llf4js_cmd.ino = ino;
llf4js_cmd.u.link.newparent = newparent;
llf4js_cmd.u.link.newname = newname;
llf4js_rpc(req, OP_LINK);
}
// ---------------------------------------------------------------------------
void llf4js_open(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_rpc(req, OP_OPEN);
}
// ---------------------------------------------------------------------------
void llf4js_read(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_cmd.u.rw.offset = off;
llf4js_cmd.u.rw.len = size;
llf4js_cmd.u.rw.srcBuf = NULL;
llf4js_rpc(req, OP_READ);
}
// ---------------------------------------------------------------------------
void llf4js_write(fuse_req_t req, fuse_ino_t ino, const char *buf,
size_t size, off_t off, struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_cmd.u.rw.offset = off;
llf4js_cmd.u.rw.len = size;
llf4js_cmd.u.rw.srcBuf = buf;
llf4js_rpc(req, OP_WRITE);
}
// ---------------------------------------------------------------------------
void llf4js_flush(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_rpc(req, OP_FLUSH);
}
// ---------------------------------------------------------------------------
void llf4js_release(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_rpc(req, OP_RELEASE);
}
// ---------------------------------------------------------------------------
void llf4js_fsync(fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_rpc(req, OP_FSYNC);
}
// ---------------------------------------------------------------------------
void llf4js_opendir(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_rpc(req, OP_OPENDIR);
}
// ---------------------------------------------------------------------------
void llf4js_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_cmd.u.readdir.size = size;
llf4js_cmd.u.readdir.offset = off;
llf4js_rpc(req, OP_READDIR);
}
// ---------------------------------------------------------------------------
void llf4js_releasedir(fuse_req_t req, fuse_ino_t ino,
struct fuse_file_info *fi)
{
llf4js_cmd.ino = ino;
llf4js_cmd.info = fi;
llf4js_rpc(req, OP_RELEASEDIR);
}
// ---------------------------------------------------------------------------
void llf4js_fsyncdir(fuse_req_t req, fuse_ino_t ino, int datasync,
struct fuse_file_info *fi)
{
llf4js_rpc(req, OP_FSYNCDIR);
}
// ---------------------------------------------------------------------------
void llf4js_statfs(fuse_req_t req, fuse_ino_t ino)
{
llf4js_rpc(req, OP_STATFS);
}
// ---------------------------------------------------------------------------
void llf4js_setxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
const char *value, size_t size, int flags)
{
llf4js_rpc(req, OP_SETXATTR);
}
// ---------------------------------------------------------------------------
void llf4js_getxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
size_t size)
{
llf4js_rpc(req, OP_GETXATTR);
}
// ---------------------------------------------------------------------------
void llf4js_listxattr(fuse_req_t req, fuse_ino_t ino, size_t size)
{
llf4js_rpc(req, OP_LISTXATTR);
}
// ---------------------------------------------------------------------------
void llf4js_removexattr(fuse_req_t req, fuse_ino_t ino, const char *name)
{
llf4js_rpc(req, OP_REMOVEXATTR);
}
// ---------------------------------------------------------------------------
void llf4js_access(fuse_req_t req, fuse_ino_t ino, int mask)
{
llf4js_cmd.ino = ino;
llf4js_cmd.u.access.mask = mask;
llf4js_rpc(req, OP_ACCESS);
}
// ---------------------------------------------------------------------------
void llf4js_create(fuse_req_t req, fuse_ino_t parent, const char *name,
mode_t mode, struct fuse_file_info *fi)
{
llf4js_rpc(req, OP_CREATE);
}
// ---------------------------------------------------------------------------
void *llfuse_thread(void *)
{
struct fuse_lowlevel_ops ops = { 0 };
ops.init = llf4js_init;
ops.destroy = llf4js_destroy;
ops.lookup = llf4js_lookup;
//ops.forget = llf4js_forget;
ops.getattr = llf4js_getattr;
ops.setattr = llf4js_setattr;
ops.readlink = llf4js_readlink;
ops.mknod = llf4js_mknod;
ops.mkdir = llf4js_mkdir;
ops.unlink = llf4js_unlink;
ops.rmdir = llf4js_rmdir;
ops.symlink = llf4js_symlink;
ops.rename = llf4js_rename;
ops.link = llf4js_link;
ops.open = llf4js_open;
ops.read = llf4js_read;
ops.write = llf4js_write;
//ops.flush = llf4js_flush;
ops.release = llf4js_release;
ops.fsync = llf4js_fsync;
ops.opendir = llf4js_opendir;
ops.readdir = llf4js_readdir;
ops.releasedir = llf4js_releasedir;
ops.fsyncdir = llf4js_fsyncdir;
//ops.statfs = llf4js_statfs;
//ops.setxattr = llf4js_setxattr;
//ops.getxattr = llf4js_getxattr;
//ops.listxattr = llf4js_listxattr;
//ops.removexattr = llf4js_removexattr;
ops.access = llf4js_access;
//ops.create = llf4js_create;
char *argv_debug[] = { (char*)"dummy", (char*)"-d" };
char *argv_nodebug[] = { (char*)"dummy" };
char **argv;
if (llf4js.enableFuseDebug)
argv = argv_debug;
else
argv = argv_nodebug;
int initialArgc = sizeof(argv) / sizeof(char*);
char **argvIncludingExtraArgs = (char**)malloc(sizeof(char*) * (initialArgc + llf4js.extraArgc));
memcpy(argvIncludingExtraArgs, argv, sizeof(argv));
memcpy(argvIncludingExtraArgs + initialArgc, llf4js.extraArgv, sizeof(char*) * llf4js.extraArgc);
struct fuse_args args = FUSE_ARGS_INIT(initialArgc + llf4js.extraArgc, argvIncludingExtraArgs);
struct fuse_chan *ch;
char *mountpoint = (char*)llf4js.root.c_str();
int err = -1;
if ((ch = fuse_mount(mountpoint, &args)) != NULL) {
struct fuse_session *se;
se = fuse_lowlevel_new(&args, &ops, sizeof (ops), NULL);
if (se != NULL) {
if (fuse_set_signal_handlers(se) != -1) {
fuse_session_add_chan(se, ch);
err = fuse_session_loop(se);
fuse_remove_signal_handlers(se);
fuse_session_remove_chan(ch);
}
fuse_session_destroy(se);
}
fuse_unmount(mountpoint, ch);
}
fuse_opt_free_args(&args);
return NULL;
}
// ---------------------------------------------------------------------------
void LLProcessReturnValue(const Arguments& args)
{
if (args.Length() >= 1 && args[0]->IsNumber()) {
Local<Number> retval = Local<Number>::Cast(args[0]);
llf4js_cmd.retval = (int)retval->Value();
#ifdef DEBUG
std::cout << "retval " << llf4js_cmd.retval << "\n";
#endif
}
}
// ---------------------------------------------------------------------------
Handle<Value> LLGenericNoReplyCompletion(const Arguments& args)
{
HandleScope scope;
bool exiting = (llf4js_cmd.op == OP_DESTROY);
LLProcessReturnValue(args);
sem_post(llf4js.psem);
if (exiting) {
pthread_join(llf4js.fuse_thread, NULL);
uv_unref((uv_loop_t*) &llf4js.async);
sem_close(llf4js.psem);
sem_unlink(llf4js_semaphore_name().c_str());
}
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLGenericCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
void statGet(Handle<Object> stat, struct stat *stbuf)
{
Local<Value> prop = stat->Get(String::NewSymbol("size"));
if (!prop->IsUndefined() && prop->IsNumber()) {
Local<Number> num = Local<Number>::Cast(prop);
stbuf->st_size = (off_t)num->Value();
}
prop = stat->Get(String::NewSymbol("mode"));
if (!prop->IsUndefined() && prop->IsNumber()) {
Local<Number> num = Local<Number>::Cast(prop);
stbuf->st_mode = (mode_t)num->Value();
}
prop = stat->Get(String::NewSymbol("nlink"));
if (!prop->IsUndefined() && prop->IsNumber()) {
Local<Number> num = Local<Number>::Cast(prop);
stbuf->st_nlink = (mode_t)num->Value();
}
prop = stat->Get(String::NewSymbol("uid"));
if (!prop->IsUndefined() && prop->IsNumber()) {
Local<Number> num = Local<Number>::Cast(prop);
stbuf->st_uid = (uid_t)num->Value();
}
prop = stat->Get(String::NewSymbol("gid"));
if (!prop->IsUndefined() && prop->IsNumber()) {
Local<Number> num = Local<Number>::Cast(prop);
stbuf->st_gid = (gid_t)num->Value();
}
#ifdef __APPLE__
ConvertDate(stat, "mtime", &stbuf->st_mtimespec);
ConvertDate(stat, "ctime", &stbuf->st_ctimespec);
ConvertDate(stat, "atime", &stbuf->st_atimespec);
#else
ConvertDate(stat, "mtime", &stbuf->st_mtim);
ConvertDate(stat, "ctime", &stbuf->st_ctim);
ConvertDate(stat, "atime", &stbuf->st_atim);
#endif
prop = stat->Get(String::NewSymbol("ino"));
if (!prop->IsUndefined() && prop->IsNumber()) {
Local<Number> num = Local<Number>::Cast(prop);
stbuf->st_ino = (ino_t)num->Value();
}
}
static Local<Object> statSet(struct stat *stbuf)
{
Local<Object> stat = Object::New();
{
Local<Number> num = Number::New((double)stbuf->st_size);
stat->Set(String::NewSymbol("size"), num);
}
{
Local<Number> num = Number::New((double)stbuf->st_mode);
stat->Set(String::NewSymbol("mode"), num);
}
{
Local<Number> num = Number::New((double)stbuf->st_nlink);
stat->Set(String::NewSymbol("nlink"), num);
}
{
Local<Number> num = Number::New((double)stbuf->st_uid);
stat->Set(String::NewSymbol("uid"), num);
}
{
Local<Number> num = Number::New((double)stbuf->st_gid);
stat->Set(String::NewSymbol("gid"), num);
}
#if 0
#ifdef __APPLE__
ConvertDateTo(stat, "mtime", &stbuf->st_mtimespec);
ConvertDateTo(stat, "ctime", &stbuf->st_ctimespec);
ConvertDateTo(stat, "atime", &stbuf->st_atimespec);
#else
ConvertDateTo(stat, "mtime", &stbuf->st_mtim);
ConvertDateTo(stat, "ctime", &stbuf->st_ctim);
ConvertDateTo(stat, "atime", &stbuf->st_atim);
#endif
#endif
{
Local<Number> num = Number::New((double)stbuf->st_ino);
stat->Set(String::NewSymbol("ino"), num);
}
return stat;
}
Handle<Value> LLLookupCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (llf4js_cmd.retval == 0 && args.Length() >= 3 && args[1]->IsObject() && args[2]->IsObject()) {
memset(&llf4js_cmd.u.lookup.entry, 0, sizeof(llf4js_cmd.u.lookup.entry));
Handle<Object> entry = Handle<Object>::Cast(args[1]);
Local<Value> prop = entry->Get(String::NewSymbol("ino"));
if (!prop->IsUndefined() && prop->IsNumber()) {
Local<Number> num = Local<Number>::Cast(prop);
llf4js_cmd.u.lookup.entry.ino = (off_t)num->Value();
}
Handle<Object> stat = Handle<Object>::Cast(args[2]);
statGet(stat, &llf4js_cmd.u.lookup.entry.attr);
fuse_reply_entry(llf4js_cmd.req, &llf4js_cmd.u.lookup.entry);
} else {
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
}
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLGetAttrCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (llf4js_cmd.retval == 0 && args.Length() >= 2 && args[1]->IsObject()) {
memset(&llf4js_cmd.u.getattr.stbuf, 0, sizeof(llf4js_cmd.u.getattr.stbuf));
Handle<Object> stat = Handle<Object>::Cast(args[1]);
statGet(stat, &llf4js_cmd.u.getattr.stbuf);
fuse_reply_attr(llf4js_cmd.req, &llf4js_cmd.u.getattr.stbuf, 10);
} else {
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
}
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLSetAttrCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (llf4js_cmd.retval == 0 && args.Length() >= 2 && args[1]->IsObject()) {
memset(&llf4js_cmd.u.setattr.dstStbuf, 0, sizeof(llf4js_cmd.u.setattr.dstStbuf));
Handle<Object> stat = Handle<Object>::Cast(args[1]);
statGet(stat, &llf4js_cmd.u.setattr.dstStbuf);
fuse_reply_attr(llf4js_cmd.req, &llf4js_cmd.u.setattr.dstStbuf, 10);
} else {
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
}
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLOpenCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (0 == llf4js_cmd.retval)
fuse_reply_open(llf4js_cmd.req, llf4js_cmd.info);
else
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLReadCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (llf4js_cmd.retval >= 0) {
char *buffer_data = node::Buffer::Data(llf4js.nodeBuffer);
fuse_reply_buf(llf4js_cmd.req, buffer_data, llf4js_cmd.retval);
} else {
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
}
llf4js.nodeBuffer.Dispose();
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLReadlinkCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (llf4js_cmd.retval >= 0) {
char *buffer_data = node::Buffer::Data(llf4js.nodeBuffer);
buffer_data[llf4js_cmd.retval] = 0;
fuse_reply_readlink(llf4js_cmd.req, buffer_data);
} else {
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
}
llf4js.nodeBuffer.Dispose();
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLWriteCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (llf4js_cmd.retval >= 0)
fuse_reply_write(llf4js_cmd.req, (size_t) llf4js_cmd.retval);
else
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
llf4js.nodeBuffer.Dispose();
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLOpenDirCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (0 == llf4js_cmd.retval)
fuse_reply_open(llf4js_cmd.req, llf4js_cmd.info);
else
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
Handle<Value> LLReadDirCompletion(const Arguments& args)
{
HandleScope scope;
LLProcessReturnValue(args);
if (llf4js_cmd.retval == 0 && args.Length() >= 3 && args[1]->IsArray() && args[2]->IsArray()) {
Handle<Array> ar = Handle<Array>::Cast(args[1]);
Handle<Array> ar2 = Handle<Array>::Cast(args[2]);
size_t cur_size = 0, size = llf4js_cmd.u.readdir.size, entry_size;
char *buf = NULL;
buf = (char *) alloca(size);
if (llf4js_cmd.u.readdir.offset > 0) {
//std::cout << "EOL\n";
fuse_reply_buf(llf4js_cmd.req, NULL, 0);
goto end;
}
for (uint32_t i = 0; i < ar->Length(); i++) {
Local<Value> el = ar->Get(i);
Local<Value> el2 = ar2->Get(i);
if (!el->IsUndefined() && el->IsString() && !el2->IsUndefined() && el2->IsNumber()) {
Local<String> name = Local<String>::Cast(el);
Local<Number> ino = Local<Number>::Cast(el2);
String::Utf8Value av(name);
struct stat st;
entry_size = fuse_add_direntry(llf4js_cmd.req, NULL, 0, *av, NULL, 0);
if ((cur_size + entry_size) > llf4js_cmd.u.readdir.size)
break ;
memset(&st, 0, sizeof(st));
st.st_ino = (ino_t)ino->Value();
fuse_add_direntry(llf4js_cmd.req, buf + cur_size, size, *av, &st, cur_size + entry_size);
size -= entry_size;
cur_size += entry_size;
//std::cout << "cur_size " << cur_size << " name " << *av << "\n";
}
}
fuse_reply_buf(llf4js_cmd.req, buf, cur_size);
} else {
fuse_reply_err(llf4js_cmd.req, -llf4js_cmd.retval);
}
end:
sem_post(llf4js.psem);
return scope.Close(Undefined());
}
// ---------------------------------------------------------------------------
// Called from the main thread.
static void DispatchOp(uv_async_t* handle, int status)
{
HandleScope scope;
std::string symName(llfuseop_names[llf4js_cmd.op]);
Local<FunctionTemplate> tpl = FunctionTemplate::New(LLGenericNoReplyCompletion); // default
llf4js_cmd.retval = -EPERM;
int argc = 0;
Handle<Value> argv[6];
Local<Number> ino = Number::New((double)llf4js_cmd.ino);
argv[argc++] = ino;
node::Buffer* buffer = NULL; // used for read/write operations
bool passHandle = false;
#ifdef DEBUG
std::cout << "DispatchOp " << llfuseop_names[llf4js_cmd.op] << " ino " << llf4js_cmd.ino << "\n";
#endif
switch (llf4js_cmd.op) {
case OP_INIT:
case OP_DESTROY:
llf4js_cmd.retval = 0; // Will be used as the return value of OP_INIT.
--argc; // Ugly. Remove the first argument (path) because not needed.
break;
case OP_LOOKUP:
tpl = FunctionTemplate::New(LLLookupCompletion);
argv[argc++] = String::New(llf4js_cmd.u.lookup.name);
break;
case OP_GETATTR:
tpl = FunctionTemplate::New(LLGetAttrCompletion);
break;
case OP_SETATTR:
tpl = FunctionTemplate::New(LLSetAttrCompletion);
argv[argc++] = statSet(&llf4js_cmd.u.setattr.srcStbuf);
argv[argc++] = Number::New((double)llf4js_cmd.u.setattr.to_set);
break;
case OP_READLINK:
tpl = FunctionTemplate::New(LLReadlinkCompletion);
buffer = node::Buffer::New(llf4js_cmd.u.rw.len);
break;
case OP_MKNOD:
tpl = FunctionTemplate::New(LLLookupCompletion);
argv[argc++] = String::New(llf4js_cmd.u.mknod.name);
argv[argc++] = Number::New((double)llf4js_cmd.u.mknod.mode);
argv[argc++] = Number::New((double)llf4js_cmd.u.mknod.rdev);
break;
case OP_MKDIR: