Method description:
Obtain file information based on file descriptor.
grammar:
The code copy is as follows:
fs.fstat(fd, [callback(err, stats)])
Since this method belongs to the fs module, it is necessary to introduce the fs module before use (var fs= require("fs") )
Receive parameters:
fd file descriptor
callback callback, passing 2 parameters, exception parameter err and file information parameter stats
stats contains the following information: (The following information is the file information read in the case, not the default value)
The code copy is as follows:
{
dev : 0 ,
mode : 33206,
nlink: 1,
uid: 0,
gid: 0,
rdev : 0,
ino : 0,
size: 378(bytes),
atime: Tue Jun 10 2014 13:57:13 GMT +0800 <China Standard Time>,
mtime : Tue Jun 13 2014 09:48:31 GMT +0800 <China Standard Time>,
ctime : Tue Jun 10 2014 13:57:13 GMT +0800 <China Standard Time>
}
example:
The code copy is as follows:
var fs = require('fs');
fs.open('content.txt', 'a', function(err,fd){
if(err){
throw err;
}
console.log('file open');
fs.fstat(fd, function(err, stats){
if(err){
throw err;
}
console.log(stats);
fs.close(fd , function(){
console.log('file close');
})
})
})
Source code:
The code copy is as follows:
fs.lstat = function(path, callback) {
callback = makeCallback(callback);
if (!nullCheck(path, callback)) return;
binding.lstat(pathModule._makeLong(path), callback);
};