/*
 * osd_sec.h - OSD security manager API
 *
 * Copyright (C) 2008 Panasas Inc.  All rights reserved.
 *
 * Authors:
 *   Boaz Harrosh <ooo@electrozaur.com>
 *   Benny Halevy <bhalevy@panasas.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 *
 */
#ifndef __OSD_SEC_H__
#define __OSD_SEC_H__

#include <scsi/osd_protocol.h>
#include <scsi/osd_types.h>

/*
 * Contains types and constants of osd capabilities and security
 * encoding/decoding.
 * API is trying to keep security abstract so initiator of an object
 * based pNFS client knows as little as possible about security and
 * capabilities. It is the Server's osd-initiator place to know more.
 * Also can be used by osd-target.
 */
void osd_sec_encode_caps(void *caps, ...);/* NI */
void osd_sec_init_nosec_doall_caps(void *caps,
	const struct osd_obj_id *obj, bool is_collection, const bool is_v1);

bool osd_is_sec_alldata(struct osd_security_parameters *sec_params);

/* Conditionally sign the CDB according to security setting in ocdb
 * with cap_key */
void osd_sec_sign_cdb(struct osd_cdb *ocdb, const u8 *cap_key);

/* Unconditionally sign the BIO data with cap_key.
 * Check for osd_is_sec_alldata() was done prior to calling this. */
void osd_sec_sign_data(void *data_integ, struct bio *bio, const u8 *cap_key);

/* Version independent copy of caps into the cdb */
void osd_set_caps(struct osd_cdb *cdb, const void *caps);

#endif /* ndef __OSD_SEC_H__ */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=29905b52fad0854351f57bab867647e4982285bf&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/fs?id=29905b52fad0854351f57bab867647e4982285bf&amp;showmsg=1'>fs</a>/<a href='/cgit.cgi/linux/net-next.git/log/fs/nfsd?id=29905b52fad0854351f57bab867647e4982285bf&amp;showmsg=1'>nfsd</a>/<a href='/cgit.cgi/linux/net-next.git/log/fs/nfsd/nfs4layouts.c?id=29905b52fad0854351f57bab867647e4982285bf&amp;showmsg=1'>nfs4layouts.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/fs/nfsd/nfs4layouts.c?id=29905b52fad0854351f57bab867647e4982285bf'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2017-01-31 12:29:24 -0500'>2017-01-31</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/fs/nfsd/nfs4layouts.c?id=d19fb70dd68c4e960e2ac09b0b9c79dfdeefa726'>NFSD: Fix a null reference case in find_or_create_lock_stateid()</a></td><td>Kinglong Mee</td><td>1</td><td><span class='deletions'>-2</span>/<span class='insertions'>+3</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
nfsd assigns the nfs4_free_lock_stateid to .sc_free in init_lock_stateid().

If nfsd doesn't go through init_lock_stateid() and put stateid at end,
there is a NULL reference to .sc_free when calling nfs4_put_stid(ns).

This patch let the nfs4_stid.sc_free assignment to nfs4_alloc_stid().

Cc: stable@vger.kernel.org
Fixes: 356a95ece7aa "nfsd: clean up races in lock stateid searching..."
Signed-off-by: Kinglong Mee &lt;kinglongmee@gmail.com&gt;
Reviewed-by: Jeff Layton &lt;jlayton@redhat.com&gt;
Signed-off-by: J. Bruce Fields &lt;bfields@redhat.com&gt;


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