X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Finclude%2Flustre_sec.h;h=6c4207cb4970f86212f52a9bacb9b7c3deda263e;hb=68234a15f0ca73b035f91e5bcc9399ca0bca1287;hp=e9fe8547f376020cb7e493baaafeb6eeed6a8173;hpb=9b73c02192b3e16c322402e8c080e660ba2c457c;p=fs%2Flustre-release.git diff --git a/lustre/include/lustre_sec.h b/lustre/include/lustre_sec.h index e9fe854..6c4207c 100644 --- a/lustre/include/lustre_sec.h +++ b/lustre/include/lustre_sec.h @@ -1,37 +1,57 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * Copyright (C) 2004-2006 Cluster File Systems, Inc. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. * - * This file is part of Lustre, http://www.lustre.org. + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). * - * Lustre is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * - * Lustre is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. * - * You should have received a copy of the GNU General Public License - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * GPL HEADER END + */ +/* + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. */ #ifndef _LUSTRE_SEC_H_ #define _LUSTRE_SEC_H_ +/** \defgroup sptlrpc sptlrpc + * + * @{ + */ + /* * to avoid include */ -struct key; struct obd_import; struct obd_export; struct ptlrpc_request; struct ptlrpc_reply_state; struct ptlrpc_bulk_desc; struct brw_page; +/* Linux specific */ +struct key; +struct seq_file; /* * forward declaration @@ -44,6 +64,20 @@ struct ptlrpc_svc_ctx; struct ptlrpc_cli_ctx; struct ptlrpc_ctx_ops; +/** + * \addtogroup flavor flavor + * + * RPC flavor is represented by a 32 bits integer. Currently the high 12 bits + * are unused, must be set to 0 for future expansion. + * 
+ * ------------------------------------------------------------------------
+ * | 4b (bulk svc) | 4b (bulk type) | 4b (svc) | 4b (mech)  | 4b (policy) |
+ * ------------------------------------------------------------------------
+ *
+ * + * @{ + */ + /* * flavor constants */ @@ -51,7 +85,6 @@ enum sptlrpc_policy { SPTLRPC_POLICY_NULL = 0, SPTLRPC_POLICY_PLAIN = 1, SPTLRPC_POLICY_GSS = 2, - SPTLRPC_POLICY_GSS_PIPEFS = 3, SPTLRPC_POLICY_MAX, }; @@ -72,127 +105,254 @@ enum sptlrpc_mech_gss { }; enum sptlrpc_service_type { - SPTLRPC_SVC_NULL = 0, /* no security */ - SPTLRPC_SVC_AUTH = 1, /* auth only */ - SPTLRPC_SVC_INTG = 2, /* integrity */ - SPTLRPC_SVC_PRIV = 3, /* privacy */ + SPTLRPC_SVC_NULL = 0, /**< no security */ + SPTLRPC_SVC_AUTH = 1, /**< authentication only */ + SPTLRPC_SVC_INTG = 2, /**< integrity */ + SPTLRPC_SVC_PRIV = 3, /**< privacy */ SPTLRPC_SVC_MAX, }; -/* - * flavor compose/extract - */ +enum sptlrpc_bulk_type { + SPTLRPC_BULK_DEFAULT = 0, /**< follow rpc flavor */ + SPTLRPC_BULK_HASH = 1, /**< hash integrity */ + SPTLRPC_BULK_MAX, +}; -typedef __u32 ptlrpc_sec_flavor_t; +enum sptlrpc_bulk_service { + SPTLRPC_BULK_SVC_NULL = 0, /**< no security */ + SPTLRPC_BULK_SVC_AUTH = 1, /**< authentication only */ + SPTLRPC_BULK_SVC_INTG = 2, /**< integrity */ + SPTLRPC_BULK_SVC_PRIV = 3, /**< privacy */ + SPTLRPC_BULK_SVC_MAX, +}; /* - * 8b (reserved) | 8b (flags) - * 4b (reserved) | 4b (svc) | 4b (mech) | 4b (policy) + * compose/extract macros */ -#define SEC_FLAVOR_POLICY_OFFSET (0) -#define SEC_FLAVOR_MECH_OFFSET (4) -#define SEC_FLAVOR_SVC_OFFSET (8) -#define SEC_FLAVOR_RESERVE1_OFFSET (12) -#define SEC_FLAVOR_FLAGS_OFFSET (16) - -#define SEC_MAKE_RPC_FLAVOR(policy, mech, svc) \ - (((__u32)(policy) << SEC_FLAVOR_POLICY_OFFSET) | \ - ((__u32)(mech) << SEC_FLAVOR_MECH_OFFSET) | \ - ((__u32)(svc) << SEC_FLAVOR_SVC_OFFSET)) - -#define SEC_MAKE_RPC_SUBFLAVOR(mech, svc) \ - ((__u32)(mech) | \ - ((__u32)(svc) << \ - (SEC_FLAVOR_SVC_OFFSET - SEC_FLAVOR_MECH_OFFSET))) - -#define SEC_FLAVOR_SUB(flavor) \ - ((((__u32)(flavor)) >> SEC_FLAVOR_MECH_OFFSET) & 0xFF) +#define FLVR_POLICY_OFFSET (0) +#define FLVR_MECH_OFFSET (4) +#define FLVR_SVC_OFFSET (8) +#define FLVR_BULK_TYPE_OFFSET (12) +#define FLVR_BULK_SVC_OFFSET (16) + +#define MAKE_FLVR(policy, mech, svc, btype, bsvc) \ + (((__u32)(policy) << FLVR_POLICY_OFFSET) | \ + ((__u32)(mech) << FLVR_MECH_OFFSET) | \ + ((__u32)(svc) << FLVR_SVC_OFFSET) | \ + ((__u32)(btype) << FLVR_BULK_TYPE_OFFSET) | \ + ((__u32)(bsvc) << FLVR_BULK_SVC_OFFSET)) -#define SEC_FLAVOR_POLICY(flavor) \ - ((((__u32)(flavor)) >> SEC_FLAVOR_POLICY_OFFSET) & 0xF) -#define SEC_FLAVOR_MECH(flavor) \ - ((((__u32)(flavor)) >> SEC_FLAVOR_MECH_OFFSET) & 0xF) -#define SEC_FLAVOR_SVC(flavor) \ - ((((__u32)(flavor)) >> SEC_FLAVOR_SVC_OFFSET) & 0xF) - -#define SEC_FLAVOR_RPC(f) \ - (((__u32) (f)) & ((1 << SEC_FLAVOR_RESERVE1_OFFSET) - 1)) +/* + * extraction + */ +#define SPTLRPC_FLVR_POLICY(flavor) \ + ((((__u32)(flavor)) >> FLVR_POLICY_OFFSET) & 0xF) +#define SPTLRPC_FLVR_MECH(flavor) \ + ((((__u32)(flavor)) >> FLVR_MECH_OFFSET) & 0xF) +#define SPTLRPC_FLVR_SVC(flavor) \ + ((((__u32)(flavor)) >> FLVR_SVC_OFFSET) & 0xF) +#define SPTLRPC_FLVR_BULK_TYPE(flavor) \ + ((((__u32)(flavor)) >> FLVR_BULK_TYPE_OFFSET) & 0xF) +#define SPTLRPC_FLVR_BULK_SVC(flavor) \ + ((((__u32)(flavor)) >> FLVR_BULK_SVC_OFFSET) & 0xF) + +#define SPTLRPC_FLVR_BASE(flavor) \ + ((((__u32)(flavor)) >> FLVR_POLICY_OFFSET) & 0xFFF) +#define SPTLRPC_FLVR_BASE_SUB(flavor) \ + ((((__u32)(flavor)) >> FLVR_MECH_OFFSET) & 0xFF) /* * gss subflavors */ -#define SPTLRPC_SUBFLVR_KRB5N \ - SEC_MAKE_RPC_SUBFLAVOR(SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_NULL) -#define SPTLRPC_SUBFLVR_KRB5A \ - SEC_MAKE_RPC_SUBFLAVOR(SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_AUTH) -#define SPTLRPC_SUBFLVR_KRB5I \ - SEC_MAKE_RPC_SUBFLAVOR(SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_INTG) -#define SPTLRPC_SUBFLVR_KRB5P \ - SEC_MAKE_RPC_SUBFLAVOR(SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_PRIV) +#define MAKE_BASE_SUBFLVR(mech, svc) \ + ((__u32)(mech) | \ + ((__u32)(svc) << (FLVR_SVC_OFFSET - FLVR_MECH_OFFSET))) + +#define SPTLRPC_SUBFLVR_KRB5N \ + MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_NULL) +#define SPTLRPC_SUBFLVR_KRB5A \ + MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_AUTH) +#define SPTLRPC_SUBFLVR_KRB5I \ + MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_INTG) +#define SPTLRPC_SUBFLVR_KRB5P \ + MAKE_BASE_SUBFLVR(SPTLRPC_MECH_GSS_KRB5, SPTLRPC_SVC_PRIV) /* * "end user" flavors */ -#define SPTLRPC_FLVR_NULL \ - SEC_MAKE_RPC_FLAVOR(SPTLRPC_POLICY_NULL, \ - SPTLRPC_MECH_NULL, \ - SPTLRPC_SVC_NULL) -#define SPTLRPC_FLVR_PLAIN \ - SEC_MAKE_RPC_FLAVOR(SPTLRPC_POLICY_PLAIN, \ - SPTLRPC_MECH_PLAIN, \ - SPTLRPC_SVC_NULL) -#define SPTLRPC_FLVR_KRB5N \ - SEC_MAKE_RPC_FLAVOR(SPTLRPC_POLICY_GSS, \ - SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_NULL) -#define SPTLRPC_FLVR_KRB5A \ - SEC_MAKE_RPC_FLAVOR(SPTLRPC_POLICY_GSS, \ - SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_AUTH) -#define SPTLRPC_FLVR_KRB5I \ - SEC_MAKE_RPC_FLAVOR(SPTLRPC_POLICY_GSS, \ - SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_INTG) -#define SPTLRPC_FLVR_KRB5P \ - SEC_MAKE_RPC_FLAVOR(SPTLRPC_POLICY_GSS, \ - SPTLRPC_MECH_GSS_KRB5, \ - SPTLRPC_SVC_PRIV) - -#define SPTLRPC_FLVR_INVALID (-1) +#define SPTLRPC_FLVR_NULL \ + MAKE_FLVR(SPTLRPC_POLICY_NULL, \ + SPTLRPC_MECH_NULL, \ + SPTLRPC_SVC_NULL, \ + SPTLRPC_BULK_DEFAULT, \ + SPTLRPC_BULK_SVC_NULL) +#define SPTLRPC_FLVR_PLAIN \ + MAKE_FLVR(SPTLRPC_POLICY_PLAIN, \ + SPTLRPC_MECH_PLAIN, \ + SPTLRPC_SVC_NULL, \ + SPTLRPC_BULK_HASH, \ + SPTLRPC_BULK_SVC_INTG) +#define SPTLRPC_FLVR_KRB5N \ + MAKE_FLVR(SPTLRPC_POLICY_GSS, \ + SPTLRPC_MECH_GSS_KRB5, \ + SPTLRPC_SVC_NULL, \ + SPTLRPC_BULK_DEFAULT, \ + SPTLRPC_BULK_SVC_NULL) +#define SPTLRPC_FLVR_KRB5A \ + MAKE_FLVR(SPTLRPC_POLICY_GSS, \ + SPTLRPC_MECH_GSS_KRB5, \ + SPTLRPC_SVC_AUTH, \ + SPTLRPC_BULK_DEFAULT, \ + SPTLRPC_BULK_SVC_NULL) +#define SPTLRPC_FLVR_KRB5I \ + MAKE_FLVR(SPTLRPC_POLICY_GSS, \ + SPTLRPC_MECH_GSS_KRB5, \ + SPTLRPC_SVC_INTG, \ + SPTLRPC_BULK_DEFAULT, \ + SPTLRPC_BULK_SVC_INTG) +#define SPTLRPC_FLVR_KRB5P \ + MAKE_FLVR(SPTLRPC_POLICY_GSS, \ + SPTLRPC_MECH_GSS_KRB5, \ + SPTLRPC_SVC_PRIV, \ + SPTLRPC_BULK_DEFAULT, \ + SPTLRPC_BULK_SVC_PRIV) #define SPTLRPC_FLVR_DEFAULT SPTLRPC_FLVR_NULL -/* - * flavor flags (maximum 8 flags) +#define SPTLRPC_FLVR_INVALID ((__u32) 0xFFFFFFFF) +#define SPTLRPC_FLVR_ANY ((__u32) 0xFFF00000) + +/** + * extract the useful part from wire flavor */ -#define SEC_FLAVOR_FL_BULK (1 << (0 + SEC_FLAVOR_FLAGS_OFFSET)) -#define SEC_FLAVOR_FL_USER (1 << (1 + SEC_FLAVOR_FLAGS_OFFSET)) +#define WIRE_FLVR(wflvr) (((__u32) (wflvr)) & 0x000FFFFF) + +/** @} flavor */ -#define SEC_FLAVOR_HAS_BULK(flavor) \ - (((flavor) & SEC_FLAVOR_FL_BULK) != 0) -#define SEC_FLAVOR_HAS_USER(flavor) \ - (((flavor) & SEC_FLAVOR_FL_USER) != 0) +static inline void flvr_set_svc(__u32 *flvr, __u32 svc) +{ + LASSERT(svc < SPTLRPC_SVC_MAX); + *flvr = MAKE_FLVR(SPTLRPC_FLVR_POLICY(*flvr), + SPTLRPC_FLVR_MECH(*flvr), + svc, + SPTLRPC_FLVR_BULK_TYPE(*flvr), + SPTLRPC_FLVR_BULK_SVC(*flvr)); +} +static inline void flvr_set_bulk_svc(__u32 *flvr, __u32 svc) +{ + LASSERT(svc < SPTLRPC_BULK_SVC_MAX); + *flvr = MAKE_FLVR(SPTLRPC_FLVR_POLICY(*flvr), + SPTLRPC_FLVR_MECH(*flvr), + SPTLRPC_FLVR_SVC(*flvr), + SPTLRPC_FLVR_BULK_TYPE(*flvr), + svc); +} -struct sec_flavor_config { - __u32 sfc_rpc_flavor; /* main rpc flavor */ - __u32 sfc_bulk_priv; /* bulk encryption algorithm */ - __u32 sfc_bulk_csum; /* bulk checksum algorithm */ - __u32 sfc_flags; /* extra flags */ +struct bulk_spec_hash { + __u8 hash_alg; }; -enum lustre_part { - LUSTRE_CLI = 0, - LUSTRE_MDT, - LUSTRE_OST, - LUSTRE_MGC, - LUSTRE_MGS, +/** + * Full description of flavors being used on a ptlrpc connection, include + * both regular RPC and bulk transfer parts. + */ +struct sptlrpc_flavor { + /** + * wire flavor, should be renamed to sf_wire. + */ + __u32 sf_rpc; + /** + * general flags of PTLRPC_SEC_FL_* + */ + __u32 sf_flags; + /** + * rpc flavor specification + */ + union { + /* nothing for now */ + } u_rpc; + /** + * bulk flavor specification + */ + union { + struct bulk_spec_hash hash; + } u_bulk; }; +/** + * identify the RPC is generated from what part of Lustre. It's encoded into + * RPC requests and to be checked by ptlrpc service. + */ +enum lustre_sec_part { + LUSTRE_SP_CLI = 0, + LUSTRE_SP_MDT, + LUSTRE_SP_OST, + LUSTRE_SP_MGC, + LUSTRE_SP_MGS, + LUSTRE_SP_ANY = 0xFF +}; + +const char *sptlrpc_part2name(enum lustre_sec_part sp); +enum lustre_sec_part sptlrpc_target_sec_part(struct obd_device *obd); + +/** + * A rule specifies a flavor to be used by a ptlrpc connection between + * two Lustre parts. + */ +struct sptlrpc_rule { + __u32 sr_netid; /* LNET network ID */ + __u8 sr_from; /* sec_part */ + __u8 sr_to; /* sec_part */ + __u16 sr_padding; + struct sptlrpc_flavor sr_flvr; +}; + +/** + * A set of rules in memory. + * + * Rules are generated and stored on MGS, and propagated to MDT, OST, + * and client when needed. + */ +struct sptlrpc_rule_set { + int srs_nslot; + int srs_nrule; + struct sptlrpc_rule *srs_rules; +}; + +int sptlrpc_parse_flavor(const char *str, struct sptlrpc_flavor *flvr); +int sptlrpc_flavor_has_bulk(struct sptlrpc_flavor *flvr); + +static inline void sptlrpc_rule_set_init(struct sptlrpc_rule_set *set) +{ + memset(set, 0, sizeof(*set)); +} + +void sptlrpc_rule_set_free(struct sptlrpc_rule_set *set); +int sptlrpc_rule_set_expand(struct sptlrpc_rule_set *set); +int sptlrpc_rule_set_merge(struct sptlrpc_rule_set *set, + struct sptlrpc_rule *rule); +int sptlrpc_rule_set_choose(struct sptlrpc_rule_set *rset, + enum lustre_sec_part from, + enum lustre_sec_part to, + lnet_nid_t nid, + struct sptlrpc_flavor *sf); +void sptlrpc_rule_set_dump(struct sptlrpc_rule_set *set); + +int sptlrpc_process_config(struct lustre_cfg *lcfg); +void sptlrpc_conf_log_start(const char *logname); +void sptlrpc_conf_log_stop(const char *logname); +void sptlrpc_conf_log_update_begin(const char *logname); +void sptlrpc_conf_log_update_end(const char *logname); +void sptlrpc_conf_client_adapt(struct obd_device *obd); +int sptlrpc_conf_target_get_rules(struct obd_device *obd, + struct sptlrpc_rule_set *rset, + int initial); +void sptlrpc_target_choose_flavor(struct sptlrpc_rule_set *rset, + enum lustre_sec_part from, + lnet_nid_t nid, + struct sptlrpc_flavor *flavor); + /* The maximum length of security payload. 1024 is enough for Kerberos 5, * and should be enough for other future mechanisms but not sure. * Only used by pre-allocated request/reply pool. @@ -206,31 +366,119 @@ struct vfs_cred { }; struct ptlrpc_ctx_ops { + /** + * To determine whether it's suitable to use the \a ctx for \a vcred. + */ int (*match) (struct ptlrpc_cli_ctx *ctx, struct vfs_cred *vcred); + + /** + * To bring the \a ctx uptodate. + */ int (*refresh) (struct ptlrpc_cli_ctx *ctx); + + /** + * Validate the \a ctx. + */ int (*validate) (struct ptlrpc_cli_ctx *ctx); + + /** + * Force the \a ctx to die. + */ void (*die) (struct ptlrpc_cli_ctx *ctx, int grace); int (*display) (struct ptlrpc_cli_ctx *ctx, char *buf, int bufsize); - /* - * rpc data transform + + /** + * Sign the request message using \a ctx. + * + * \pre req->rq_reqmsg point to request message. + * \pre req->rq_reqlen is the request message length. + * \post req->rq_reqbuf point to request message with signature. + * \post req->rq_reqdata_len is set to the final request message size. + * + * \see null_ctx_sign(), plain_ctx_sign(), gss_cli_ctx_sign(). */ int (*sign) (struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req); + + /** + * Verify the reply message using \a ctx. + * + * \pre req->rq_repdata point to reply message with signature. + * \pre req->rq_repdata_len is the total reply message length. + * \post req->rq_repmsg point to reply message without signature. + * \post req->rq_replen is the reply message length. + * + * \see null_ctx_verify(), plain_ctx_verify(), gss_cli_ctx_verify(). + */ int (*verify) (struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req); + + /** + * Encrypt the request message using \a ctx. + * + * \pre req->rq_reqmsg point to request message in clear text. + * \pre req->rq_reqlen is the request message length. + * \post req->rq_reqbuf point to request message. + * \post req->rq_reqdata_len is set to the final request message size. + * + * \see gss_cli_ctx_seal(). + */ int (*seal) (struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req); + + /** + * Decrypt the reply message using \a ctx. + * + * \pre req->rq_repdata point to encrypted reply message. + * \pre req->rq_repdata_len is the total cipher text length. + * \post req->rq_repmsg point to reply message in clear text. + * \post req->rq_replen is the reply message length in clear text. + * + * \see gss_cli_ctx_unseal(). + */ int (*unseal) (struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req); - /* - * bulk transform + + /** + * Wrap bulk request data. This is called before wrapping RPC + * request message. + * + * \pre bulk buffer is descripted by desc->bd_iov and + * desc->bd_iov_count. note for read it's just buffer, no data + * need to be sent; for write it contains data in clear text. + * \post when necessary, ptlrpc_bulk_sec_desc was properly prepared + * (usually inside of RPC request message). + * - encryption: cipher text bulk buffer is descripted by + * desc->bd_enc_iov and desc->bd_iov_count (currently assume iov + * count remains the same). + * - otherwise: bulk buffer is still desc->bd_iov and + * desc->bd_iov_count. + * + * \return 0: success. + * \return -ev: error code. + * + * \see plain_cli_wrap_bulk(), gss_cli_ctx_wrap_bulk(). */ int (*wrap_bulk) (struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); + + /** + * Unwrap bulk reply data. This is called after wrapping RPC + * reply message. + * + * \pre bulk buffer is descripted by desc->bd_iov/desc->bd_enc_iov and + * desc->bd_iov_count, according to wrap_bulk(). + * \post final bulk data in clear text is placed in buffer described + * by desc->bd_iov and desc->bd_iov_count. + * \return +ve nob of actual bulk data in clear text. + * \return -ve error code. + * + * \see plain_cli_unwrap_bulk(), gss_cli_ctx_unwrap_bulk(). + */ int (*unwrap_bulk) (struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); @@ -256,66 +504,178 @@ struct ptlrpc_ctx_ops { PTLRPC_CTX_ERROR) struct ptlrpc_cli_ctx { - struct hlist_node cc_cache; /* linked into ctx cache */ - atomic_t cc_refcount; + cfs_hlist_node_t cc_cache; /* linked into ctx cache */ + cfs_atomic_t cc_refcount; struct ptlrpc_sec *cc_sec; struct ptlrpc_ctx_ops *cc_ops; cfs_time_t cc_expire; /* in seconds */ unsigned int cc_early_expire:1; unsigned long cc_flags; struct vfs_cred cc_vcred; - spinlock_t cc_lock; - struct list_head cc_req_list; /* waiting reqs linked here */ - struct list_head cc_gc_chain; /* linked to gc chain */ + cfs_spinlock_t cc_lock; + cfs_list_t cc_req_list; /* waiting reqs linked here */ + cfs_list_t cc_gc_chain; /* linked to gc chain */ }; +/** + * client side policy operation vector. + */ struct ptlrpc_sec_cops { - /* - * ptlrpc_sec constructor/destructor + /** + * Given an \a imp, create and initialize a ptlrpc_sec structure. + * \param ctx service context: + * - regular import: \a ctx should be NULL; + * - reverse import: \a ctx is obtained from incoming request. + * \param flavor specify what flavor to use. + * + * When necessary, policy module is responsible for taking reference + * on the import. + * + * \see null_create_sec(), plain_create_sec(), gss_sec_create_kr(). */ struct ptlrpc_sec * (*create_sec) (struct obd_import *imp, struct ptlrpc_svc_ctx *ctx, - __u32 flavor, - unsigned long flags); + struct sptlrpc_flavor *flavor); + + /** + * Destructor of ptlrpc_sec. When called, refcount has been dropped + * to 0 and all contexts has been destroyed. + * + * \see null_destroy_sec(), plain_destroy_sec(), gss_sec_destroy_kr(). + */ void (*destroy_sec) (struct ptlrpc_sec *sec); - /* - * context + /** + * Notify that this ptlrpc_sec is going to die. Optionally, policy + * module is supposed to set sec->ps_dying and whatever necessary + * actions. + * + * \see plain_kill_sec(), gss_sec_kill(). + */ + void (*kill_sec) (struct ptlrpc_sec *sec); + + /** + * Given \a vcred, lookup and/or create its context. The policy module + * is supposed to maintain its own context cache. + * XXX currently \a create and \a remove_dead is always 1, perhaps + * should be removed completely. + * + * \see null_lookup_ctx(), plain_lookup_ctx(), gss_sec_lookup_ctx_kr(). */ struct ptlrpc_cli_ctx * (*lookup_ctx) (struct ptlrpc_sec *sec, struct vfs_cred *vcred, int create, int remove_dead); + + /** + * Called then the reference of \a ctx dropped to 0. The policy module + * is supposed to destroy this context or whatever else according to + * its cache maintainance mechamism. + * + * \param sync if zero, we shouldn't wait for the context being + * destroyed completely. + * + * \see plain_release_ctx(), gss_sec_release_ctx_kr(). + */ void (*release_ctx) (struct ptlrpc_sec *sec, struct ptlrpc_cli_ctx *ctx, int sync); + + /** + * Flush the context cache. + * + * \param uid context of which user, -1 means all contexts. + * \param grace if zero, the PTLRPC_CTX_UPTODATE_BIT of affected + * contexts should be cleared immediately. + * \param force if zero, only idle contexts will be flushed. + * + * \see plain_flush_ctx_cache(), gss_sec_flush_ctx_cache_kr(). + */ int (*flush_ctx_cache) (struct ptlrpc_sec *sec, uid_t uid, int grace, int force); + + /** + * Called periodically by garbage collector to remove dead contexts + * from cache. + * + * \see gss_sec_gc_ctx_kr(). + */ void (*gc_ctx) (struct ptlrpc_sec *sec); - /* - * reverse context + /** + * Given an context \a ctx, install a corresponding reverse service + * context on client side. + * XXX currently it's only used by GSS module, maybe we should remove + * this from general API. */ int (*install_rctx)(struct obd_import *imp, struct ptlrpc_sec *sec, struct ptlrpc_cli_ctx *ctx); - /* - * request/reply buffer manipulation + /** + * To allocate request buffer for \a req. + * + * \pre req->rq_reqmsg == NULL. + * \pre req->rq_reqbuf == NULL, otherwise it must be pre-allocated, + * we are not supposed to free it. + * \post if success, req->rq_reqmsg point to a buffer with size + * at least \a lustre_msg_size. + * + * \see null_alloc_reqbuf(), plain_alloc_reqbuf(), gss_alloc_reqbuf(). */ int (*alloc_reqbuf)(struct ptlrpc_sec *sec, struct ptlrpc_request *req, int lustre_msg_size); + + /** + * To free request buffer for \a req. + * + * \pre req->rq_reqbuf != NULL. + * + * \see null_free_reqbuf(), plain_free_reqbuf(), gss_free_reqbuf(). + */ void (*free_reqbuf) (struct ptlrpc_sec *sec, struct ptlrpc_request *req); + + /** + * To allocate reply buffer for \a req. + * + * \pre req->rq_repbuf == NULL. + * \post if success, req->rq_repbuf point to a buffer with size + * req->rq_repbuf_len, the size should be large enough to receive + * reply which be transformed from \a lustre_msg_size of clear text. + * + * \see null_alloc_repbuf(), plain_alloc_repbuf(), gss_alloc_repbuf(). + */ int (*alloc_repbuf)(struct ptlrpc_sec *sec, struct ptlrpc_request *req, int lustre_msg_size); + + /** + * To free reply buffer for \a req. + * + * \pre req->rq_repbuf != NULL. + * \post req->rq_repbuf == NULL. + * \post req->rq_repbuf_len == 0. + * + * \see null_free_repbuf(), plain_free_repbuf(), gss_free_repbuf(). + */ void (*free_repbuf) (struct ptlrpc_sec *sec, struct ptlrpc_request *req); + + /** + * To expand the request buffer of \a req, thus the \a segment in + * the request message pointed by req->rq_reqmsg can accommodate + * at least \a newsize of data. + * + * \pre req->rq_reqmsg->lm_buflens[segment] < newsize. + * + * \see null_enlarge_reqbuf(), plain_enlarge_reqbuf(), + * gss_enlarge_reqbuf(). + */ int (*enlarge_reqbuf) (struct ptlrpc_sec *sec, struct ptlrpc_request *req, @@ -324,71 +684,172 @@ struct ptlrpc_sec_cops { * misc */ int (*display) (struct ptlrpc_sec *sec, - char *buf, int buflen); + struct seq_file *seq); }; +/** + * server side policy operation vector. + */ struct ptlrpc_sec_sops { + /** + * verify an incoming request. + * + * \pre request message is pointed by req->rq_reqbuf, size is + * req->rq_reqdata_len; and the message has been unpacked to + * host byte order. + * + * \retval SECSVC_OK success, req->rq_reqmsg point to request message + * in clear text, size is req->rq_reqlen; req->rq_svc_ctx is set; + * req->rq_sp_from is decoded from request. + * \retval SECSVC_COMPLETE success, the request has been fully + * processed, and reply message has been prepared; req->rq_sp_from is + * decoded from request. + * \retval SECSVC_DROP failed, this request should be dropped. + * + * \see null_accept(), plain_accept(), gss_svc_accept_kr(). + */ int (*accept) (struct ptlrpc_request *req); + + /** + * Perform security transformation upon reply message. + * + * \pre reply message is pointed by req->rq_reply_state->rs_msg, size + * is req->rq_replen. + * \post req->rs_repdata_len is the final message size. + * \post req->rq_reply_off is set. + * + * \see null_authorize(), plain_authorize(), gss_svc_authorize(). + */ int (*authorize) (struct ptlrpc_request *req); + + /** + * Invalidate server context \a ctx. + * + * \see gss_svc_invalidate_ctx(). + */ void (*invalidate_ctx) (struct ptlrpc_svc_ctx *ctx); - /* buffer manipulation */ + + /** + * Allocate a ptlrpc_reply_state. + * + * \param msgsize size of the reply message in clear text. + * \pre if req->rq_reply_state != NULL, then it's pre-allocated, we + * should simply use it; otherwise we'll responsible for allocating + * a new one. + * \post req->rq_reply_state != NULL; + * \post req->rq_reply_state->rs_msg != NULL; + * + * \see null_alloc_rs(), plain_alloc_rs(), gss_svc_alloc_rs(). + */ int (*alloc_rs) (struct ptlrpc_request *req, int msgsize); + + /** + * Free a ptlrpc_reply_state. + */ void (*free_rs) (struct ptlrpc_reply_state *rs); + + /** + * Release the server context \a ctx. + * + * \see gss_svc_free_ctx(). + */ void (*free_ctx) (struct ptlrpc_svc_ctx *ctx); - /* reverse credential */ + + /** + * Install a reverse context based on the server context \a ctx. + * + * \see gss_svc_install_rctx_kr(). + */ int (*install_rctx)(struct obd_import *imp, struct ptlrpc_svc_ctx *ctx); - /* bulk transform */ + + /** + * Prepare buffer for incoming bulk write. + * + * \pre desc->bd_iov and desc->bd_iov_count describes the buffer + * intended to receive the write. + * + * \see gss_svc_prep_bulk(). + */ + int (*prep_bulk) (struct ptlrpc_request *req, + struct ptlrpc_bulk_desc *desc); + + /** + * Unwrap the bulk write data. + * + * \see plain_svc_unwrap_bulk(), gss_svc_unwrap_bulk(). + */ int (*unwrap_bulk) (struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); + + /** + * Wrap the bulk read data. + * + * \see plain_svc_wrap_bulk(), gss_svc_wrap_bulk(). + */ int (*wrap_bulk) (struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); }; struct ptlrpc_sec_policy { - struct module *sp_owner; + cfs_module_t *sp_owner; char *sp_name; - __u32 sp_policy; /* policy number */ + __u16 sp_policy; /* policy number */ struct ptlrpc_sec_cops *sp_cops; /* client ops */ struct ptlrpc_sec_sops *sp_sops; /* server ops */ }; #define PTLRPC_SEC_FL_REVERSE 0x0001 /* reverse sec */ #define PTLRPC_SEC_FL_ROOTONLY 0x0002 /* treat everyone as root */ -#define PTLRPC_SEC_FL_PAG 0x0004 /* PAG mode */ +#define PTLRPC_SEC_FL_UDESC 0x0004 /* ship udesc */ #define PTLRPC_SEC_FL_BULK 0x0008 /* intensive bulk i/o expected */ +#define PTLRPC_SEC_FL_PAG 0x0010 /* PAG mode */ +/** + * The ptlrpc_sec represents the client side ptlrpc security facilities, + * each obd_import (both regular and reverse import) must associate with + * a ptlrpc_sec. + * + * \see sptlrpc_import_sec_adapt(). + */ struct ptlrpc_sec { struct ptlrpc_sec_policy *ps_policy; - atomic_t ps_refcount; - __u32 ps_flavor; /* rpc flavor */ - unsigned long ps_flags; /* PTLRPC_SEC_FL_XX */ - struct obd_import *ps_import; /* owning import */ - spinlock_t ps_lock; /* protect ccache */ - atomic_t ps_busy; /* busy count */ + cfs_atomic_t ps_refcount; + /** statistic only */ + cfs_atomic_t ps_nctx; + /** unique identifier */ + int ps_id; + struct sptlrpc_flavor ps_flvr; + enum lustre_sec_part ps_part; + /** after set, no more new context will be created */ + unsigned int ps_dying:1; + /** owning import */ + struct obd_import *ps_import; + cfs_spinlock_t ps_lock; + /* * garbage collection */ - struct list_head ps_gc_list; + cfs_list_t ps_gc_list; cfs_time_t ps_gc_interval; /* in seconds */ cfs_time_t ps_gc_next; /* in seconds */ }; static inline int sec_is_reverse(struct ptlrpc_sec *sec) { - return (sec->ps_flags & PTLRPC_SEC_FL_REVERSE); + return (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_REVERSE); } static inline int sec_is_rootonly(struct ptlrpc_sec *sec) { - return (sec->ps_flags & PTLRPC_SEC_FL_ROOTONLY); + return (sec->ps_flvr.sf_flags & PTLRPC_SEC_FL_ROOTONLY); } struct ptlrpc_svc_ctx { - atomic_t sc_refcount; + cfs_atomic_t sc_refcount; struct ptlrpc_sec_policy *sc_policy; }; @@ -410,35 +871,34 @@ struct ptlrpc_user_desc { /* * bulk flavors */ -enum bulk_checksum_alg { - BULK_CSUM_ALG_NULL = 0, - BULK_CSUM_ALG_CRC32, - BULK_CSUM_ALG_MD5, - BULK_CSUM_ALG_SHA1, - BULK_CSUM_ALG_SHA256, - BULK_CSUM_ALG_SHA384, - BULK_CSUM_ALG_SHA512, - BULK_CSUM_ALG_MAX +enum sptlrpc_bulk_hash_alg { + BULK_HASH_ALG_NULL = 0, + BULK_HASH_ALG_ADLER32, + BULK_HASH_ALG_CRC32, + BULK_HASH_ALG_MD5, + BULK_HASH_ALG_SHA1, + BULK_HASH_ALG_SHA256, + BULK_HASH_ALG_SHA384, + BULK_HASH_ALG_SHA512, + BULK_HASH_ALG_MAX }; -enum bulk_encrypt_alg { - BULK_PRIV_ALG_NULL = 0, - BULK_PRIV_ALG_ARC4, - BULK_PRIV_ALG_MAX +const char * sptlrpc_get_hash_name(__u8 hash_alg); +__u8 sptlrpc_get_hash_alg(const char *algname); + +enum { + BSD_FL_ERR = 1, }; struct ptlrpc_bulk_sec_desc { - __u32 bsd_version; - __u32 bsd_pad; - __u32 bsd_csum_alg; /* checksum algorithm */ - __u32 bsd_priv_alg; /* encrypt algorithm */ - __u8 bsd_iv[16]; /* encrypt iv */ - __u8 bsd_csum[0]; + __u8 bsd_version; /* 0 */ + __u8 bsd_type; /* SPTLRPC_BULK_XXX */ + __u8 bsd_svc; /* SPTLRPC_BULK_SVC_XXXX */ + __u8 bsd_flags; /* flags */ + __u32 bsd_nob; /* nob of bulk data */ + __u8 bsd_data[0]; /* policy-specific token */ }; -const char * sptlrpc_bulk_csum_alg2name(__u32 csum_alg); -const char * sptlrpc_bulk_priv_alg2name(__u32 priv_alg); -__u32 sptlrpc_bulk_priv_alg2flags(__u32 priv_alg); /* * lprocfs @@ -469,25 +929,29 @@ void _sptlrpc_enlarge_msg_inplace(struct lustre_msg *msg, int segment, int newsize); /* - * security type + * security policies */ int sptlrpc_register_policy(struct ptlrpc_sec_policy *policy); int sptlrpc_unregister_policy(struct ptlrpc_sec_policy *policy); -__u32 sptlrpc_name2flavor(const char *name); -char *sptlrpc_flavor2name(__u32 flavor); +__u32 sptlrpc_name2flavor_base(const char *name); +const char *sptlrpc_flavor2name_base(__u32 flvr); +char *sptlrpc_flavor2name_bulk(struct sptlrpc_flavor *sf, + char *buf, int bufsize); +char *sptlrpc_flavor2name(struct sptlrpc_flavor *sf, char *buf, int bufsize); +char *sptlrpc_secflags2str(__u32 flags, char *buf, int bufsize); static inline struct ptlrpc_sec_policy *sptlrpc_policy_get(struct ptlrpc_sec_policy *policy) { - __module_get(policy->sp_owner); + __cfs_module_get(policy->sp_owner); return policy; } static inline void sptlrpc_policy_put(struct ptlrpc_sec_policy *policy) { - module_put(policy->sp_owner); + cfs_module_put(policy->sp_owner); } /* @@ -536,8 +1000,15 @@ int cli_ctx_is_eternal(struct ptlrpc_cli_ctx *ctx) } /* + * sec get/put + */ +struct ptlrpc_sec *sptlrpc_sec_get(struct ptlrpc_sec *sec); +void sptlrpc_sec_put(struct ptlrpc_sec *sec); + +/* * internal apis which only used by policy impelentation */ +int sptlrpc_get_next_secid(void); void sptlrpc_sec_destroy(struct ptlrpc_sec *sec); /* @@ -560,14 +1031,21 @@ int sptlrpc_cli_alloc_repbuf(struct ptlrpc_request *req, int msgsize); void sptlrpc_cli_free_repbuf(struct ptlrpc_request *req); int sptlrpc_cli_enlarge_reqbuf(struct ptlrpc_request *req, int segment, int newsize); +int sptlrpc_cli_unwrap_early_reply(struct ptlrpc_request *req, + struct ptlrpc_request **req_ret); +void sptlrpc_cli_finish_early_reply(struct ptlrpc_request *early_req); + void sptlrpc_request_out_callback(struct ptlrpc_request *req); /* * exported higher interface of import & request */ -int sptlrpc_import_get_sec(struct obd_import *imp, struct ptlrpc_svc_ctx *svc_ctx, - __u32 flavor, unsigned long flags); -void sptlrpc_import_put_sec(struct obd_import *imp); +int sptlrpc_import_sec_adapt(struct obd_import *imp, + struct ptlrpc_svc_ctx *ctx, + struct sptlrpc_flavor *flvr); +struct ptlrpc_sec *sptlrpc_import_sec_ref(struct obd_import *imp); +void sptlrpc_import_sec_put(struct obd_import *imp); + int sptlrpc_import_check_ctx(struct obd_import *imp); void sptlrpc_import_flush_root_ctx(struct obd_import *imp); void sptlrpc_import_flush_my_ctx(struct obd_import *imp); @@ -578,8 +1056,7 @@ int sptlrpc_req_refresh_ctx(struct ptlrpc_request *req, long timeout); int sptlrpc_req_replace_dead_ctx(struct ptlrpc_request *req); void sptlrpc_req_set_flavor(struct ptlrpc_request *req, int opcode); -int sptlrpc_parse_flavor(enum lustre_part from, enum lustre_part to, - char *str, struct sec_flavor_config *conf); +int sptlrpc_parse_rule(char *param, struct sptlrpc_rule *rule); /* gc */ void sptlrpc_gc_add_sec(struct ptlrpc_sec *sec); @@ -588,8 +1065,7 @@ void sptlrpc_gc_add_ctx(struct ptlrpc_cli_ctx *ctx); /* misc */ const char * sec2target_str(struct ptlrpc_sec *sec); -int sptlrpc_lprocfs_rd(char *page, char **start, off_t off, int count, - int *eof, void *data); +int sptlrpc_lprocfs_cliobd_attach(struct obd_device *dev); /* * server side @@ -600,8 +1076,6 @@ enum secsvc_accept_res { SECSVC_DROP, }; -int sptlrpc_target_export_check(struct obd_export *exp, - struct ptlrpc_request *req); int sptlrpc_svc_unwrap_request(struct ptlrpc_request *req); int sptlrpc_svc_alloc_rs(struct ptlrpc_request *req, int msglen); int sptlrpc_svc_wrap_reply(struct ptlrpc_request *req); @@ -610,6 +1084,11 @@ void sptlrpc_svc_ctx_addref(struct ptlrpc_request *req); void sptlrpc_svc_ctx_decref(struct ptlrpc_request *req); void sptlrpc_svc_ctx_invalidate(struct ptlrpc_request *req); +int sptlrpc_target_export_check(struct obd_export *exp, + struct ptlrpc_request *req); +void sptlrpc_target_update_exp_flavor(struct obd_device *obd, + struct sptlrpc_rule_set *rset); + /* * reverse context */ @@ -627,14 +1106,24 @@ void sptlrpc_enc_pool_put_pages(struct ptlrpc_bulk_desc *desc); int sptlrpc_cli_wrap_bulk(struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); int sptlrpc_cli_unwrap_bulk_read(struct ptlrpc_request *req, - int nob, obd_count pg_count, - struct brw_page **pga); + struct ptlrpc_bulk_desc *desc, + int nob); int sptlrpc_cli_unwrap_bulk_write(struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); +#ifdef HAVE_SERVER_SUPPORT +int sptlrpc_svc_prep_bulk(struct ptlrpc_request *req, + struct ptlrpc_bulk_desc *desc); int sptlrpc_svc_wrap_bulk(struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); int sptlrpc_svc_unwrap_bulk(struct ptlrpc_request *req, struct ptlrpc_bulk_desc *desc); +#endif + +/* bulk helpers (internal use only by policies) */ +int sptlrpc_get_bulk_checksum(struct ptlrpc_bulk_desc *desc, __u8 alg, + void *buf, int buflen); + +int bulk_sec_desc_unpack(struct lustre_msg *msg, int offset, int swabbed); /* user descriptor helpers */ static inline int sptlrpc_user_desc_size(int ngroups) @@ -644,20 +1133,19 @@ static inline int sptlrpc_user_desc_size(int ngroups) int sptlrpc_current_user_desc_size(void); int sptlrpc_pack_user_desc(struct lustre_msg *msg, int offset); -int sptlrpc_unpack_user_desc(struct lustre_msg *msg, int offset); +int sptlrpc_unpack_user_desc(struct lustre_msg *req, int offset, int swabbed); -/* bulk helpers (internal use only by policies) */ -int bulk_sec_desc_size(__u32 csum_alg, int request, int read); -int bulk_sec_desc_unpack(struct lustre_msg *msg, int offset); - -int bulk_csum_cli_request(struct ptlrpc_bulk_desc *desc, int read, - __u32 alg, struct lustre_msg *rmsg, int roff); -int bulk_csum_cli_reply(struct ptlrpc_bulk_desc *desc, int read, - struct lustre_msg *rmsg, int roff, - struct lustre_msg *vmsg, int voff); -int bulk_csum_svc(struct ptlrpc_bulk_desc *desc, int read, - struct ptlrpc_bulk_sec_desc *bsdv, int vsize, - struct ptlrpc_bulk_sec_desc *bsdr, int rsize); +#define CFS_CAP_CHOWN_MASK (1 << CFS_CAP_CHOWN) +#define CFS_CAP_SYS_RESOURCE_MASK (1 << CFS_CAP_SYS_RESOURCE) + +enum { + LUSTRE_SEC_NONE = 0, + LUSTRE_SEC_REMOTE = 1, + LUSTRE_SEC_SPECIFY = 2, + LUSTRE_SEC_ALL = 3 +}; + +/** @} sptlrpc */ #endif /* _LUSTRE_SEC_H_ */