Instructions for using the fs.fchmod method in node.js_node.js

Method description:

Change file permissions (file descriptors).

Grammar:

Copy code The code is as follows:

fs.fchmod(fd, mode, [callback(err)])

Since this method belongs to the fs module, the fs module needs to be introduced before use (var fs= require(“fs”) )

Receive parameters:

fd File descriptor

mode file permissions

callback callback, passing the exception parameter err

Example:

Copy code The code is as follows:

fs.open('content.txt', 'a', function (err, fd) {
if (err) {
Throw err;
}
fs.fchmod(fd, 0777, function(err){
if (err) {
           throw err;
}
console.log('fchmod complete');
fs.close(fd, function () {
console.log('Done');
});
})
});

Source code:

Copy code The code is as follows:

fs.fchmod = function(fd, mode, callback) {
binding.fchmod(fd, modeNum(mode), makeCallback(callback));
};