From: Filipe David Borba Manana <fdmanana@gmail.com>
Date: Tue, 21 Jan 2014 23:36:38 +0000 (+0000)
Subject: Btrfs: fix snprintf usage by send's gen_unique_name
X-Git-Tag: v3.14-rc1~29^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f74b86d85533a98ef7f573487af38f9dd514becb;p=pandora-kernel.git

Btrfs: fix snprintf usage by send's gen_unique_name

The buffer size argument passed to snprintf must account for the
trailing null byte added by snprintf, and it returns a value >= then
sizeof(buffer) when the string can't fit in the buffer.

Since our buffer has a size of 64 characters, and the maximum orphan
name we can generate is 63 characters wide, we must pass 64 as the
buffer size to snprintf, and not 63.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
---

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