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Changed unix version of .kill function to send signals to all processes #169

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merged 4 commits into from Dec 31, 2017
Merged

Changed unix version of .kill function to send signals to all processes #169

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9e82fe6
Changed unix version of .kill function to send signals to all processes
Daniel-Abrecht Dec 15, 2017
9a6e5cb
Fixed tslint errors
Daniel-Abrecht Dec 15, 2017
0e9a8bf
Only export PtyKill if TIOCSIG or TIOCSIGNAL is defined, fall back to…
Daniel-Abrecht Dec 17, 2017
2473ed2
Added a comment, a forgotten type check, and an error if an unknown s…
Daniel-Abrecht Dec 18, 2017
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35 changes: 35 additions & 0 deletions src/unix/pty.cc
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Expand Up @@ -93,6 +93,13 @@ NAN_METHOD(PtyOpen);
NAN_METHOD(PtyResize);
NAN_METHOD(PtyGetProc);

#if defined(TIOCSIG) || defined(TIOCSIGNAL)
#define DEFINE_PTY_KILL
NAN_METHOD(PtyKill);
#else
#warning "The function PtyKill will be unavailable because the ioctls TIOCSIG and TIOCSIGNAL don't exist"
#endif

/**
* Functions
*/
Expand Down Expand Up @@ -347,6 +354,29 @@ NAN_METHOD(PtyOpen) {
return info.GetReturnValue().Set(obj);
}

#ifdef DEFINE_PTY_KILL
NAN_METHOD(PtyKill) {
Nan::HandleScope scope;

if (info.Length() != 2 ||
!info[0]->IsNumber() ||
!info[1]->IsNumber()) {
return Nan::ThrowError("Usage: pty.kill(fd, signal)");
}

int fd = info[0]->IntegerValue();
int signal = info[1]->IntegerValue();

#if defined(TIOCSIG)
if (ioctl(fd, TIOCSIG, signal) == -1)
return Nan::ThrowError("ioctl(2) failed.");
#elif defined(TIOCSIGNAL)
if (ioctl(fd, TIOCSIGNAL, signal) == -1)
return Nan::ThrowError("ioctl(2) failed.");
#endif
}
#endif

NAN_METHOD(PtyResize) {
Nan::HandleScope scope;

Expand Down Expand Up @@ -706,6 +736,11 @@ NAN_MODULE_INIT(init) {
Nan::Set(target,
Nan::New<v8::String>("open").ToLocalChecked(),
Nan::New<v8::FunctionTemplate>(PtyOpen)->GetFunction());
#ifdef DEFINE_PTY_KILL
Nan::Set(target,
Nan::New<v8::String>("kill").ToLocalChecked(),
Nan::New<v8::FunctionTemplate>(PtyKill)->GetFunction());
#endif
Nan::Set(target,
Nan::New<v8::String>("resize").ToLocalChecked(),
Nan::New<v8::FunctionTemplate>(PtyResize)->GetFunction());
Expand Down
18 changes: 15 additions & 3 deletions src/unixTerminal.ts
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Expand Up @@ -6,6 +6,7 @@
import * as net from 'net';
import * as path from 'path';
import * as tty from 'tty';
import * as os from 'os';
import { Terminal, DEFAULT_COLS, DEFAULT_ROWS } from './terminal';
import { ProcessEnv, IPtyForkOptions, IPtyOpenOptions } from './interfaces';
import { ArgvOrCommandLine } from './types';
Expand Down Expand Up @@ -231,9 +232,20 @@ export class UnixTerminal extends Terminal {
}

public kill(signal?: string): void {
try {
process.kill(this.pid, signal || 'SIGHUP');
} catch (e) { /* swallow */ }
signal = signal || 'SIGHUP';
if (signal in os.constants.signals) {
try {
// pty.kill will not be available on systems which don't support
// the TIOCSIG/TIOCSIGNAL ioctl
if (pty.kill && signal !== 'SIGHUP') {
pty.kill(this._fd, os.constants.signals[signal]);
} else {
process.kill(this.pid, signal);
}
} catch (e) { /* swallow */ }
} else {
throw new Error('Unknown signal: ' + signal);
}
}

/**
Expand Down