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santigimenosantigimeno
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Initial implementation
- Added some examples
1 parent 1fd56c6 commit 918d0d5

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-0
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‎.gitignore

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node_modules
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build

‎.npmignore

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node_modules
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build

‎binding.gyp

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{
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'targets': [
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{
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'target_name': 'ioctl',
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'sources': [ 'src/ioctl.cpp' ],
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'include_dirs': [
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'<!(node -e "require(\'nan\')")'
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]
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}
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]
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}

‎examples/fionread.js

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var dgram = require('dgram');
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var ioctl = require('../');
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var FIONREAD = 0x541B;
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var s = dgram.createSocket('udp4');
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s.bind(1234, function(err) {
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if (err) {
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throw err;
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}
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var s1 = dgram.createSocket('udp4');
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var message = new Buffer("Some bytes");
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s1.send(message, 0, message.length, 1234, "localhost", function(err, bytes) {
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var length = new Buffer(4);
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var ret = ioctl(s._handle.fd, FIONREAD, length);
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console.log('Pending bytes: ' + length.readInt32LE(0));
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s1.close();
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s.close();
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});
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});

‎examples/hda_pversion.js

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var fs = require('fs');
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var ioctl = require('../');
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var ref = require('ref');
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var ArrayType = require('ref-array');
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var StructType = require('ref-struct');
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var SND_HW = '/dev/snd/hwC0D0';
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var HDA_IOCTL_PVERSION = 0x80dc4801;
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// struct snd_hwdep_info {
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// unsigned int device; /* WR: device number */
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// int card; /* R: card number */
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// unsigned char id[64]; /* ID (user selectable) */
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// unsigned char name[80]; /* hwdep name */
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// int iface; /* hwdep interface */
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// unsigned char reserved[64]; /* reserved for future */
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// };
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// define the "snd_hwdep_info" struct type
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var snd_hwdep_info = StructType({
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device : ref.types.uint32,
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card : ref.types.int32,
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id : ArrayType(ref.types.uchar, 64),
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name : ArrayType(ref.types.uchar, 80),
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iface : ref.types.int32,
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reserved : ArrayType(ref.types.uchar, 64)
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});
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var info = new snd_hwdep_info();
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fs.open(SND_HW, 'r', function(err, fd) {
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if (err) {
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throw err;
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}
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var ret = ioctl(fd, HDA_IOCTL_PVERSION, info.ref());
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console.log('device: ' + info.device);
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console.log('card: ' + info.card);
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console.log('id: ' + info.id.buffer.toString());
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console.log('name: ' + info.name.buffer.toString());
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console.log('iface: ' + info.iface);
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console.log('reserved: ' + info.reserved.buffer.toString());
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fs.close(fd);
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});

‎examples/termio.js

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var fs = require('fs');
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var ioctl = require('../');
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var ref = require('ref');
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var ArrayType = require('ref-array');
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var StructType = require('ref-struct');
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var TTY = '/dev/tty1';
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var TCGETA = 0x5405;
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var TIOCEXCL = 0x540C;
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// #define NCC 8
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// struct termio {
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// unsigned short c_iflag; /* input mode flags */
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// unsigned short c_oflag; /* output mode flags */
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// unsigned short c_cflag; /* control mode flags */
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// unsigned short c_lflag; /* local mode flags */
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// unsigned char c_line; /* line discipline */
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// unsigned char c_cc[NCC]; /* control characters */
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// };
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// define the "snd_hwdep_info" struct type
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var termio = StructType({
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c_iflag : ref.types.ushort,
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c_oflag : ref.types.ushort,
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c_cflag : ref.types.ushort,
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c_lflag : ref.types.ushort,
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c_line : ref.types.uchar,
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c_cc : ArrayType(ref.types.uchar, 8)
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});
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fs.open(TTY, 'r+', function(err, fd) {
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if (err) {
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throw err;
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}
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var info = new termio();
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var ret = ioctl(fd, TCGETA, info.ref());
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console.log('TCGETA ret: ' + ret);
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console.log('c_iflag: ' + info.c_iflag);
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console.log('c_oflag: ' + info.c_oflag);
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console.log('c_cflag: ' + info.c_cflag);
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console.log('c_lflag: ' + info.c_lflag);
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console.log('c_line: ' + info.c_line);
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console.log('c_cc: ' + info.c_cc.buffer.toString());
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ret = ioctl(fd, TIOCEXCL);
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console.log('TIOCEXCL ret: ' + ret);
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fs.close(fd);
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});

‎examples/watchdog.js

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var fs = require('fs');
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var ioctl = require('../');
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var ref = require('ref');
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var ArrayType = require('ref-array');
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var StructType = require('ref-struct');
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var WATCHDOG_DEVICE = '/dev/watchdog';
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var WDIOC_GETSUPPORT = 2150127360;
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// struct watchdog_info {
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// __u32 options; /* Options the card/driver supports */
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// __u32 firmware_version; /* Firmware version of the card */
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// __u8 identity[32]; /* Identity of the board */
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// };
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// define the "snd_hwdep_info" struct type
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var watchdog_info = StructType({
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options : ref.types.uint32,
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firmware_version : ref.types.uint32,
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identity : ArrayType(ref.types.uchar, 32)
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});
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var info = new watchdog_info();
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fs.open(WATCHDOG_DEVICE, 'r', function(err, fd) {
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if (err) {
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throw err;
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}
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var ret = ioctl(fd, WDIOC_GETSUPPORT, info.ref());
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console.log('options: ' + info.options);
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console.log('firmware_version: ' + info.firmware_version);
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console.log('identity: ' + info.identity.buffer.toString());
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fs.close(fd);
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});

‎index.js

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module.exports = require('./build/Release/ioctl.node').ioctl;

‎package.json

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{
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"name": "ioctl",
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"version": "0.0.0",
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"description": "nodejs ioctl wrapper",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"keywords": [
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"ioctl",
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"syscall"
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],
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"author": "Santiago Gimeno",
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"license": "ISC",
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"dependencies": {
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"bindings": "^1.1.1",
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"nan": "^0.8.0"
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}
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}

‎src/ioctl.cpp

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#include <sys/ioctl.h>
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#include <v8.h>
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#include <node.h>
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#include "nan.h"
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using namespace v8;
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using namespace node;
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NAN_METHOD(Ioctl) {
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NanScope();
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int length = args.Length();
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assert((length == 2) || (length == 3));
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void* argp = NULL;
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if (!args[0]->IsInt32()) {
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return ThrowException(Exception::TypeError(String::New("Argument 0 Must be an Integer")));
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}
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if (!args[1]->IsUint32()) {
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return ThrowException(Exception::TypeError(String::New("Argument 1 Must be an Integer")));
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}
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if (length == 3) {
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if (!Buffer::HasInstance(args[2])) {
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return ThrowException(Exception::TypeError(String::New("Argument 2 Must be a Buffer")));
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}
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argp = Buffer::Data(args[2]);
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}
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int fd = args[0]->Int32Value();
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int request = args[1]->Uint32Value();
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int res = ioctl(fd, request, argp);
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NanReturnValue(Number::New(res));
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}
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void InitAll(Handle<Object> exports) {
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exports->Set(NanSymbol("ioctl"), FunctionTemplate::New(Ioctl)->GetFunction());
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}
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NODE_MODULE(ioctl, InitAll)

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