Please include the following in your bug report: Version of

Emen doesn't have full support for the linux/unix /dev

/dev/zero is missing about emscripten HOT 1 OPEN

EvenOAndersen commented on June 18, 2024

/dev/zero is missing

from emscripten.

Comments (1)

sbc100 commented on June 18, 2024

Emscripten doesn't have full support for the linux/unix /dev/ filesystem.

You can see the ones that we do support here:

emscripten/src/library_fs.js

Lines 1347 to 1365 in be8f1d1

 FS.mkdev('/dev/null', FS.makedev(1, 3)); 

 // setup /dev/tty and /dev/tty1 

 // stderr needs to print output using err() rather than out() 

 // so we register a second tty just for it. 

 TTY.register(FS.makedev(5, 0), TTY.default_tty_ops); 

 TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops); 

 FS.mkdev('/dev/tty', FS.makedev(5, 0)); 

 FS.mkdev('/dev/tty1', FS.makedev(6, 0)); 

 // setup /dev/[u]random 

 // use a buffer to avoid overhead of individual crypto calls per byte 

 var randomBuffer = new Uint8Array(1024), randomLeft = 0; 

 var randomByte = () => { 

 if (randomLeft === 0) { 

 randomLeft = randomFill(randomBuffer).byteLength; 

 } 

 return randomBuffer[--randomLeft]; 

 }; 

 FS.createDevice('/dev', 'random', randomByte); 

 FS.createDevice('/dev', 'urandom', randomByte);

It should be able to create it yourself using FS.createDevice. Howeever, it might be simpler and result if smaller code size if you modify your code to avoid using this file in the emscripten build. Its likely that something like memset(..., 0, ..) is going to be better in almost every way under emscripten.

from emscripten.

/dev/zero is missing about emscripten HOT 1 OPEN

Comments (1)

Related Issues (20)

Recommend Projects

React

Vue.js

Typescript

TensorFlow

Django

Laravel

D3

Recommend Topics

javascript

web

server

Machine learning

Visualization

Game

Recommend Org

Facebook

Microsoft

Google

Alibaba

D3

Tencent

	FS.mkdev('/dev/null', FS.makedev(1, 3));
	// setup /dev/tty and /dev/tty1
	// stderr needs to print output using err() rather than out()
	// so we register a second tty just for it.
	TTY.register(FS.makedev(5, 0), TTY.default_tty_ops);
	TTY.register(FS.makedev(6, 0), TTY.default_tty1_ops);
	FS.mkdev('/dev/tty', FS.makedev(5, 0));
	FS.mkdev('/dev/tty1', FS.makedev(6, 0));
	// setup /dev/[u]random
	// use a buffer to avoid overhead of individual crypto calls per byte
	var randomBuffer = new Uint8Array(1024), randomLeft = 0;
	var randomByte = () => {
	if (randomLeft === 0) {
	randomLeft = randomFill(randomBuffer).byteLength;
	}
	return randomBuffer[--randomLeft];
	};
	FS.createDevice('/dev', 'random', randomByte);
	FS.createDevice('/dev', 'urandom', randomByte);