The correct value for rwx/r-x/r-x, as an integer, is 493. That's the
decimal number representation of the octal number 755. You can pass the
string '755' which node kindly, if confusingly, interprets as octal instead
of decimal when you pass a string to chmod, or 0755, the
C-language-and-descendants way of writing an octal number, or, to be most
explicit and least likely to confuse your future self, parseInt('755', 8).
On Tuesday, September 9, 2014 6:16:07 PM UTC-7, Ingwie Phoenix wrote:
>
> Hey list.
>
> I am trying to use the following function for a matter of security in my
> app:
>
> function doDirs(uid, gid) {
> var dirs = [
> config.base+"/cache",
> config.base+"/cdn/assets",
> config.base+"/config"
> ];
> for(var i=0; dirs.length > i; i++) {
> var dir = dirs[i];
> log.info("BIRD3 Security -> "+dir+"...");
> if(!fs.existsSync(dir)) fs.mkdirSync(dir, 755);
> if(!fs.writeFileSync(dir+"/.tmp", "o.o")) {
> fs.chmodSync(dir, 755);
> fs.unlink(dir+"/.tmp", function(){});
> }
> fs.chownSync(dir, uid, gid);
> }
> }
>
> However, after this function was executed…
>
> Ingwies-Macbook-Pro:BIRD3 Ingwie$ ls -ald cache/ cdn/assets/ config/
> d-wxrw--wt+ 3 Ingwie staff 102 9 Sep 05:08 cache/
> d-wxrw--wt+ 4 Ingwie staff 136 9 Sep 05:08 cdn/assets/
> d-wxrw--wt+ 6 Ingwie staff 204 9 Sep 05:08 config/
>
> All my read permissions are gone O_o.
>
> What is the correct value to make it: r w x | r - - | r - - ?
>
> This is done before changing to a new user, assigning read/write/execute
> permissions jsut for this one user, and read-only for the rest…
>
> The full code is found here:
> http://git.ingwie.me/ingwie/bird3/blob/master/lib/security_handler.js
>
> Kind regards, Ingwie.
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