Using the canWrite function from vfs-local, you can do it with a simple
stat. https://github.com/c9/vfs/blob/master/local/localfs.js#L19-23
function canWrite(owner, inGroup, mode) {
return owner && (mode & 00200) || // User is owner and owner can write.
inGroup && (mode & 00020) || // User is in group and group can write.
(mode & 00002); // Anyone can write.
}
Then in your code do:
fs.stat(file, function (err, stat) {
if (err) { /* handle error */ }
if (canWrite(process.uid === stat.uid, process.gid === stat.gid,
stat.mode)) {
// you can write!
}
});
I'm assuming you mean if the current owner can write. Things get more
complicated if you are running as root and want to see if some arbitrary
uid/gid can write because then you have to check for execute/search access
in all the parent directories. In that case you would need something like
https://github.com/c9/vfs/blob/master/local/localfs.js#L104-124
On Mon, Jun 4, 2012 at 3:36 PM, Alan Hoffmeister
<[email protected]>wrote:
> How to detect if a given path is writable? It can be a folder or a file...
>
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> Alan Hoffmeister
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