Allowing permission using S3FS bucket directory for other users

I'm having problem using S3FS. I'm using ``` ubuntu@ip-x-x-x-x:~$ /usr/bin/s3fs --version Amazon Simple Storage Service File System 1.71 ``` And I have the password file installed in the `/usr/share/myapp/s3fs-password` with `600` permission. I have succeeded mounting the S3 bucket. ``` sudo /usr/bin/s3fs -o allow_other -opasswd_file=/usr/share/myapp/s3fs-password -ouse_cache=/tmp mybucket.example.com /bucket ``` And I have `user_allow_other` enabled in the `/etc/fuse.conf` When I tried creating a file in the bucket as `root` it worked. ``` ubuntu@ip-x-x-x-x:~$ sudo su root@ip-x-x-x-x:/home/ubuntu# cd /bucket root@ip-x-x-x-x:/bucket# echo 'Hello World!' > test-`date +%s`.txt root@ip-x-x-x-x:/bucket# ls test-1373359118.txt ``` I checked the bucket `mybucket.example.com`'s content and the file was successfully created. But I was having difficulties writing into the directory `/bucket` as different user. ``` root@ip-x-x-x-x:/bucket# exit ubuntu@ip-x-x-x-x:~$ cd /bucket ubuntu@ip-x-x-x-x:/bucket$ echo 'Hello World!' > test-`date +%s`.txt -bash: test-1373359543.txt: Permission denied ``` I desperately tried chmod-ing to `777` the `test-1373359118.txt`. And I can write into the file ``` ubuntu@ip-x-x-x-x:/bucket$ sudo chmod 777 test-1373359118.txt ubuntu@ip-x-x-x-x:/bucket$ echo 'Test' > test-1373359118.txt ubuntu@ip-x-x-x-x:/bucket$ cat test-1373359118.txt Test ``` Funnily, I could create a directory inside the bucket, set the chmod to `777`, and write a file there. ``` ubuntu@ip-x-x-x-x:/bucket$ sudo mkdir -m 1777 test ubuntu@ip-x-x-x-x:/bucket$ ls test test-1373359118.txt ubuntu@ip-x-x-x-x:/bucket$ cd test ubuntu@ip-x-x-x-x:/bucket/test$ echo 'Hello World!' > test-`date +%s`.txt ubuntu@ip-x-x-x-x:/bucket/test$ ls test-1373360059.txt ubuntu@ip-x-x-x-x:/bucket/test$ cat test-1373360059.txt Hello World ``` But then I tried ``` ubuntu@ip-x-x-x-x:~$ sudo chmod 777 /mybucket chmod: changing permissions of '/mybucket': Input/output error ``` It didn't work. Initially I was thinking to use this `/bucket` directory to store large and rarely accessed files from my LAMP stacks located several EC2 machines. (I think it's suitable enough to use this without making a special handling library using AWS PHP SDK, but that's not the point.) Because of that reason, I can settle using a directory inside the `/mybucket` to store the files. But I'm just curious if there is a way to allow entire `/mybucket` to other users?