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cuse: kill connection on initialization error

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Luca Risolia reported that a CUSE daemon will continue to run even if
initialization of the emulated device failes for some reason (e.g. the device
number is already registered by another driver).

This patch disconnects the fuse device on error, which will make the userspace
CUSE daemon exit, albeit without indication about what the problem was.

Reported-by: Luca Risolia <luca.risolia@studio.unibo.it>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
This commit is contained in:
Miklos Szeredi 2012-08-30 19:24:35 +02:00
parent bbd9979797
commit 8d39d801d6
1 changed files with 1 additions and 3 deletions
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4
fs/fuse/cuse.c
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@ -396,7 +396,7 @@ err_device:
err_region:
unregister_chrdev_region(devt, 1);
err:
fc->conn_error = 1;
fuse_conn_kill(fc);
goto out;
}
@ -532,8 +532,6 @@ static int cuse_channel_release(struct inode *inode, struct file *file)
cdev_del(cc->cdev);
}
/* kill connection and shutdown channel */
fuse_conn_kill(&cc->fc);
rc = fuse_dev_release(inode, file); /* puts the base reference */
return rc;