Bug 31491

Summary: permissions on /dev/fuse get broken and fusermount fails
Product: Simply Linux Reporter: Ivan Zakharyaschev <imz>
Component: bugsAssignee: Mikhail Efremov <sem>
Status: CLOSED NOTABUG QA Contact: Andrey Cherepanov <cas>
Severity: major    
Priority: P3    
Version: 7.0.3   
Hardware: all   
OS: Linux   
Bug Depends on: 31490    
Bug Blocks:    

Description Ivan Zakharyaschev 2015-11-14 15:04:31 MSK 
+++ This bug was initially created as a clone of Bug #31490 +++

fuse-2.9.2-alt2

I'm using it with "control fusermount public". After some time, the permissions on /dev/fuse lack any permissions for other (i.e., are 0660), and fusermount fails to work.

fuse-2.9.4-alt3 from Sisyphus seems not have this problem.

I've reproduced this in a clean installation of Simply Linux 7.0.5.

Preparation:

install Simply Linux 7.0.5 (x86_64)

service sshd start

install fuse-sshfs 

control fusermount public

The test (as a user):

mkdir test
touch test/a
mkdir mnt
sshfs 0:test mnt
ls mnt
fusermount -u mnt

The first time the test works, because initally the permissions on /dev/fuse are like this:

crw-rw-rw- 1 root fuse 10, 229 ноя 13 17:03 /dev/fuse

but the second time the test fails, because after the first test /dev/fuse lacks the permissions for other.

"control fusermount public" has nothing to do with this (/dev/fuse), it controls the permission needed by fusermount to do a mount.
Comment 1 Ivan Zakharyaschev 2015-11-14 15:09:15 MSK 
The permissions on /dev/fuse change after the execution of:

sshfs 0:test mnt

during the first test.
Comment 2 Mikhail Efremov 2017-06-20 20:26:32 MSK 
SL-8 hasn't fuse-sshfs. Please open bug for fuse-sshfs if error still exist.