From: Andy Whitcroft <apw@canonical.com>
Date: Wed, 16 Feb 2011 04:49:59 +0000 (+0000)
Subject: ecryptfs: read on a directory should return EISDIR if not supported
X-Git-Tag: v2.6.38-rc6~1^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=323ef68faf1bbd9b1e66aea268fd09d358d7e8ab;p=pandora-kernel.git

ecryptfs: read on a directory should return EISDIR if not supported

read() calls against a file descriptor connected to a directory are
incorrectly returning EINVAL rather than EISDIR:

  [EISDIR]
    [XSI] [Option Start] The fildes argument refers to a directory and the
    implementation does not allow the directory to be read using read()
    or pread(). The readdir() function should be used instead. [Option End]

This occurs because we do not have a .read operation defined for
ecryptfs directories.  Connect this up to generic_read_dir().

BugLink: http://bugs.launchpad.net/bugs/719691
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
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