freebsd-dev/sys/kgssapi/gssapi_impl.h
Rick Macklem 13870d5d7b Piete.Brooks at cl.cam.ac.uk reported via email a crash which was
caused by use of an invalid kgss_gssd_handle during an upcall to
the gssd daemon when it has exited. This patch seems to avoid the
crashes by holding a reference count on the kgss_gssd_handle until
the upcall is done. It also adds a new mutex kgss_gssd_lock used to
make manipulation of kgss_gssd_handle SMP safe.

Tested by:	Illias A. Marinos, Herbert Poeckl
Reviewed by:	jhb
MFC after:	2 weeks
2012-12-18 00:25:48 +00:00

70 lines
2.5 KiB
C

/*-
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
* Authors: Doug Rabson <dfr@rabson.org>
* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include "gssd.h"
MALLOC_DECLARE(M_GSSAPI);
struct _gss_ctx_id_t {
KOBJ_FIELDS;
gssd_ctx_id_t handle;
};
struct _gss_cred_id_t {
gssd_cred_id_t handle;
};
struct _gss_name_t {
gssd_name_t handle;
};
struct kgss_mech {
LIST_ENTRY(kgss_mech) km_link;
gss_OID km_mech_type;
const char *km_mech_name;
struct kobj_class *km_class;
};
LIST_HEAD(kgss_mech_list, kgss_mech);
extern CLIENT *kgss_gssd_handle;
extern struct mtx kgss_gssd_lock;
extern struct kgss_mech_list kgss_mechs;
CLIENT *kgss_gssd_client(void);
int kgss_oid_equal(const gss_OID oid1, const gss_OID oid2);
extern void kgss_install_mech(gss_OID mech_type, const char *name,
struct kobj_class *cls);
extern void kgss_uninstall_mech(gss_OID mech_type);
extern gss_OID kgss_find_mech_by_name(const char *name);
extern const char *kgss_find_mech_by_oid(const gss_OID oid);
extern gss_ctx_id_t kgss_create_context(gss_OID mech_type);
extern void kgss_delete_context(gss_ctx_id_t ctx, gss_buffer_t output_token);
extern OM_uint32 kgss_transfer_context(gss_ctx_id_t ctx);
extern void kgss_copy_buffer(const gss_buffer_t from, gss_buffer_t to);