From: Csaba Henk <csaba@gluster.com>
Date: Mon, 29 Jun 2009 01:26:53 +0000 (+0200)
Subject: fuse: fix return value of fuse_dev_write()
X-Git-Tag: v2.6.31-rc2~20^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b4c458b3a23d76936e76678f2074b1528f129f7a;p=pandora-kernel.git

fuse: fix return value of fuse_dev_write()

On 64 bit systems -- where sizeof(ssize_t) > sizeof(int) -- the following test
exposes a bug due to a non-careful return of an int or unsigned value:

implement a FUSE filesystem which sends an unsolicited notification to
the kernel with invalid opcode. The respective write to /dev/fuse
will return (1 << 32) - EINVAL with errno == 0 instead of -1 with
errno == EINVAL.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: stable@kernel.org
---

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