2 * Modified from NFSv4 project for Lustre
4 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
6 * Copyright (c) 2012, 2016, Intel Corporation.
8 * Author: Eric Mei <ericm@clusterfs.com>
11 #ifndef __PTLRPC_GSS_GSS_INTERNAL_H_
12 #define __PTLRPC_GSS_GSS_INTERNAL_H_
14 #include <crypto/hash.h>
15 #include <libcfs/libcfs_crypto.h>
16 #include <lustre_sec.h>
21 #define NETOBJ_EMPTY ((netobj_t) { 0 })
22 #define RAWOBJ_EMPTY ((rawobj_t) { 0, NULL })
24 typedef struct rawobj_buf_s {
31 int rawobj_empty(rawobj_t *obj);
32 int rawobj_alloc(rawobj_t *obj, char *buf, int len);
33 void rawobj_free(rawobj_t *obj);
34 int rawobj_equal(rawobj_t *a, rawobj_t *b);
35 int rawobj_dup(rawobj_t *dest, rawobj_t *src);
36 int rawobj_serialize(rawobj_t *obj, __u32 **buf, __u32 *buflen);
37 int rawobj_extract(rawobj_t *obj, __u32 **buf, __u32 *buflen);
38 int rawobj_extract_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen);
39 int rawobj_extract_local(rawobj_t *obj, __u32 **buf, __u32 *buflen);
40 int rawobj_extract_local_alloc(rawobj_t *obj, __u32 **buf, __u32 *buflen);
41 int rawobj_from_netobj(rawobj_t *rawobj, netobj_t *netobj);
42 int rawobj_from_netobj_alloc(rawobj_t *obj, netobj_t *netobj);
44 int buffer_extract_bytes(const void **buf, __u32 *buflen,
45 void *res, __u32 reslen);
48 * several timeout values. client refresh upcall timeout
50 #define __TIMEOUT_DELTA (10)
56 #define GSS_GC_INTERVAL (60 * 60) /* 60 minutes */
58 static inline time64_t gss_round_ctx_expiry(time64_t expiry,
59 unsigned long sec_flags)
61 if (sec_flags & PTLRPC_SEC_FL_REVERSE)
64 if (ktime_get_real_seconds() + __TIMEOUT_DELTA <= expiry)
65 return expiry - __TIMEOUT_DELTA;
71 * Max encryption element in block cipher algorithms.
73 #define GSS_MAX_CIPHER_BLOCK (16)
76 * XXX make it visible of kernel and lgssd/lsvcgssd
79 GSSD_INTERFACE_VERSION_V1 = 1,
80 GSSD_INTERFACE_VERSION_V2 = 2,
81 GSSD_INTERFACE_VERSION = GSSD_INTERFACE_VERSION_V2,
84 #define PTLRPC_GSS_VERSION (1)
87 enum ptlrpc_gss_proc {
88 PTLRPC_GSS_PROC_DATA = 0,
89 PTLRPC_GSS_PROC_INIT = 1,
90 PTLRPC_GSS_PROC_CONTINUE_INIT = 2,
91 PTLRPC_GSS_PROC_DESTROY = 3,
92 PTLRPC_GSS_PROC_ERR = 4,
96 LUSTRE_GSS_TGT_MGS = 0,
97 LUSTRE_GSS_TGT_MDS = 1,
98 LUSTRE_GSS_TGT_OSS = 2,
101 enum ptlrpc_gss_header_flags {
102 LUSTRE_GSS_PACK_BULK = 1,
103 LUSTRE_GSS_PACK_USER = 2,
104 LUSTRE_GSS_PACK_KCSUM = 4,
108 __u32 import_to_gss_svc(struct obd_import *imp)
110 int cl_sp_to = LUSTRE_SP_ANY;
113 cl_sp_to = imp->imp_obd->u.cli.cl_sp_to;
117 return LUSTRE_GSS_TGT_MDS;
119 return LUSTRE_GSS_TGT_OSS;
122 return LUSTRE_GSS_TGT_MGS;
130 #define PTLRPC_GSS_MAX_HANDLE_SIZE (8)
131 #define PTLRPC_GSS_HEADER_SIZE (sizeof(struct gss_header) + \
132 PTLRPC_GSS_MAX_HANDLE_SIZE)
135 static inline __u64 gss_handle_to_u64(rawobj_t *handle)
137 if (handle->len != PTLRPC_GSS_MAX_HANDLE_SIZE)
139 return *((__u64 *) handle->data);
142 #define GSS_SEQ_WIN (2048)
143 #define GSS_SEQ_WIN_MAIN GSS_SEQ_WIN
144 #define GSS_SEQ_WIN_BACK (128)
145 #define GSS_SEQ_REPACK_THRESHOLD (GSS_SEQ_WIN_MAIN / 2 + \
146 GSS_SEQ_WIN_MAIN / 4)
148 struct gss_svc_seq_data {
151 * highest sequence number seen so far, for main and back window
156 * main and back window
157 * for i such that ssd_max - GSS_SEQ_WIN < i <= ssd_max, the i-th bit
158 * of ssd_win is nonzero iff sequence number i has been seen already.
160 unsigned long ssd_win_main[GSS_SEQ_WIN_MAIN/BITS_PER_LONG];
161 unsigned long ssd_win_back[GSS_SEQ_WIN_BACK/BITS_PER_LONG];
165 struct gss_ctx *gsc_mechctx;
166 struct gss_svc_seq_data gsc_seqdata;
167 rawobj_t gsc_rvs_hdl;
171 uid_t gsc_mapped_uid;
172 unsigned int gsc_usr_root:1,
179 struct gss_svc_reqctx {
180 struct ptlrpc_svc_ctx src_base;
184 struct gss_wire_ctx src_wirectx;
185 struct gss_svc_ctx *src_ctx;
187 * record place of bulk_sec_desc in request/reply buffer
189 struct ptlrpc_bulk_sec_desc *src_reqbsd;
191 struct ptlrpc_bulk_sec_desc *src_repbsd;
196 unsigned int src_init:1,
203 struct ptlrpc_cli_ctx gc_base;
209 struct gss_ctx *gc_mechctx;
210 /* handle for the buddy svc ctx */
211 rawobj_t gc_svc_handle;
214 struct gss_cli_ctx_keyring {
215 struct gss_cli_ctx gck_base;
217 struct timer_list gck_timer;
221 struct ptlrpc_sec gs_base;
222 struct gss_api_mech *gs_mech;
228 * FIXME cleanup the keyring upcall mutexes
230 #define HAVE_KEYRING_UPCALL_SERIALIZED 1
232 struct gss_sec_keyring {
233 struct gss_sec gsk_base;
235 * all contexts listed here. access is protected by sec spinlock.
237 struct hlist_head gsk_clist;
239 * specially point to root ctx (only one at a time). access is
240 * protected by sec spinlock.
242 struct ptlrpc_cli_ctx *gsk_root_ctx;
244 * specially serialize upcalls for root context.
246 struct mutex gsk_root_uc_lock;
248 #ifdef HAVE_KEYRING_UPCALL_SERIALIZED
249 struct mutex gsk_uc_lock; /* serialize upcalls */
253 static inline struct gss_cli_ctx *ctx2gctx(struct ptlrpc_cli_ctx *ctx)
255 return container_of(ctx, struct gss_cli_ctx, gc_base);
259 struct gss_cli_ctx_keyring *ctx2gctx_keyring(struct ptlrpc_cli_ctx *ctx)
261 return container_of(ctx2gctx(ctx),
262 struct gss_cli_ctx_keyring, gck_base);
265 static inline struct gss_sec *sec2gsec(struct ptlrpc_sec *sec)
267 return container_of(sec, struct gss_sec, gs_base);
270 static inline struct gss_sec_keyring *sec2gsec_keyring(struct ptlrpc_sec *sec)
272 return container_of(sec2gsec(sec), struct gss_sec_keyring, gsk_base);
275 #ifdef HAVE_CACHE_HASH_SPINLOCK
276 # define sunrpc_cache_lookup(c, i, h) sunrpc_cache_lookup_rcu((c), (i), (h))
277 # define cache_read_lock(cdetail) spin_lock(&((cdetail)->hash_lock))
278 # define cache_read_unlock(cdetail) spin_unlock(&((cdetail)->hash_lock))
279 #else /* ! HAVE_CACHE_HASH_SPINLOCK */
280 # define cache_read_lock(cdetail) read_lock(&((cdetail)->hash_lock))
281 # define cache_read_unlock(cdetail) read_unlock(&((cdetail)->hash_lock))
284 #define GSS_CTX_INIT_MAX_LEN (1024)
287 * This only guaranteed be enough for current krb5 des-cbc-crc . We might
288 * adjust this when new enc type or mech added in.
290 #define GSS_PRIVBUF_PREFIX_LEN (32)
291 #define GSS_PRIVBUF_SUFFIX_LEN (32)
294 struct gss_svc_reqctx *gss_svc_ctx2reqctx(struct ptlrpc_svc_ctx *ctx)
297 return container_of(ctx, struct gss_svc_reqctx, src_base);
301 struct gss_svc_ctx *gss_svc_ctx2gssctx(struct ptlrpc_svc_ctx *ctx)
304 return gss_svc_ctx2reqctx(ctx)->src_ctx;
308 int gss_cli_ctx_match(struct ptlrpc_cli_ctx *ctx, struct vfs_cred *vcred);
309 int gss_cli_ctx_display(struct ptlrpc_cli_ctx *ctx, char *buf, int bufsize);
310 int gss_cli_ctx_sign(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
311 int gss_cli_ctx_verify(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
312 int gss_cli_ctx_seal(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
313 int gss_cli_ctx_unseal(struct ptlrpc_cli_ctx *ctx, struct ptlrpc_request *req);
315 int gss_sec_install_rctx(struct obd_import *imp, struct ptlrpc_sec *sec,
316 struct ptlrpc_cli_ctx *ctx);
317 int gss_alloc_reqbuf(struct ptlrpc_sec *sec, struct ptlrpc_request *req,
319 void gss_free_reqbuf(struct ptlrpc_sec *sec, struct ptlrpc_request *req);
320 int gss_alloc_repbuf(struct ptlrpc_sec *sec, struct ptlrpc_request *req,
322 void gss_free_repbuf(struct ptlrpc_sec *sec, struct ptlrpc_request *req);
323 int gss_enlarge_reqbuf(struct ptlrpc_sec *sec, struct ptlrpc_request *req,
324 int segment, int newsize);
326 int gss_svc_accept(struct ptlrpc_sec_policy *policy,
327 struct ptlrpc_request *req);
328 void gss_svc_invalidate_ctx(struct ptlrpc_svc_ctx *svc_ctx);
329 int gss_svc_alloc_rs(struct ptlrpc_request *req, int msglen);
330 int gss_svc_authorize(struct ptlrpc_request *req);
331 void gss_svc_free_rs(struct ptlrpc_reply_state *rs);
332 void gss_svc_free_ctx(struct ptlrpc_svc_ctx *ctx);
334 int cli_ctx_expire(struct ptlrpc_cli_ctx *ctx);
335 int cli_ctx_check_death(struct ptlrpc_cli_ctx *ctx);
337 int gss_copy_rvc_cli_ctx(struct ptlrpc_cli_ctx *cli_ctx,
338 struct ptlrpc_svc_ctx *svc_ctx);
340 struct gss_header *gss_swab_header(struct lustre_msg *msg, int segment,
342 netobj_t *gss_swab_netobj(struct lustre_msg *msg, int segment);
344 void gss_cli_ctx_uptodate(struct gss_cli_ctx *gctx);
345 int gss_pack_err_notify(struct ptlrpc_request *req, __u32 major, __u32 minor);
346 int gss_check_seq_num(struct gss_svc_seq_data *sd, __u32 seq_num, int set);
348 int gss_sec_create_common(struct gss_sec *gsec,
349 struct ptlrpc_sec_policy *policy,
350 struct obd_import *imp,
351 struct ptlrpc_svc_ctx *ctx,
352 struct sptlrpc_flavor *sf);
353 void gss_sec_destroy_common(struct gss_sec *gsec);
354 void gss_sec_kill(struct ptlrpc_sec *sec);
356 int gss_cli_ctx_init_common(struct ptlrpc_sec *sec,
357 struct ptlrpc_cli_ctx *ctx,
358 struct ptlrpc_ctx_ops *ctxops,
359 struct vfs_cred *vcred);
360 int gss_cli_ctx_fini_common(struct ptlrpc_sec *sec,
361 struct ptlrpc_cli_ctx *ctx);
363 void gss_cli_ctx_flags2str(unsigned long flags, char *buf, int bufsize);
366 #ifndef HAVE_GSS_KEYRING
367 static inline int __init gss_init_keyring(void) { return 0; }
368 static inline void __exit gss_exit_keyring(void) { return; }
370 int __init gss_init_keyring(void);
371 void __exit gss_exit_keyring(void);
373 extern unsigned int gss_check_upcall_ns;
376 int gss_cli_prep_bulk(struct ptlrpc_request *req,
377 struct ptlrpc_bulk_desc *desc);
378 int gss_cli_ctx_wrap_bulk(struct ptlrpc_cli_ctx *ctx,
379 struct ptlrpc_request *req,
380 struct ptlrpc_bulk_desc *desc);
381 int gss_cli_ctx_unwrap_bulk(struct ptlrpc_cli_ctx *ctx,
382 struct ptlrpc_request *req,
383 struct ptlrpc_bulk_desc *desc);
384 int gss_svc_prep_bulk(struct ptlrpc_request *req,
385 struct ptlrpc_bulk_desc *desc);
386 int gss_svc_unwrap_bulk(struct ptlrpc_request *req,
387 struct ptlrpc_bulk_desc *desc);
388 int gss_svc_wrap_bulk(struct ptlrpc_request *req,
389 struct ptlrpc_bulk_desc *desc);
391 /* gss_generic_token.c */
392 int g_token_size(rawobj_t *mech, unsigned int body_size);
393 void g_make_token_header(rawobj_t *mech, int body_size, unsigned char **buf);
394 __u32 g_verify_token_header(rawobj_t *mech, int *body_size,
395 unsigned char **buf_in, int toksize);
398 /* gss_cli_upcall.c */
399 int gss_do_ctx_init_rpc(char __user *buffer, unsigned long count);
400 int gss_do_ctx_fini_rpc(struct gss_cli_ctx *gctx);
402 int __init gss_init_cli_upcall(void);
403 void gss_exit_cli_upcall(void);
405 /* gss_svc_upcall.c */
406 __u64 gss_get_next_ctx_index(void);
407 int gss_svc_upcall_install_rvs_ctx(struct obd_import *imp,
408 struct gss_sec *gsec,
409 struct gss_cli_ctx *gctx);
410 int gss_svc_upcall_expire_rvs_ctx(rawobj_t *handle);
411 int gss_svc_upcall_dup_handle(rawobj_t *handle, struct gss_svc_ctx *ctx);
412 int gss_svc_upcall_update_sequence(rawobj_t *handle, __u32 seq);
413 int gss_svc_upcall_handle_init(struct ptlrpc_request *req,
414 struct gss_svc_reqctx *grctx,
415 struct gss_wire_ctx *gw,
416 struct obd_device *target,
420 struct gss_svc_ctx *gss_svc_upcall_get_ctx(struct ptlrpc_request *req,
421 struct gss_wire_ctx *gw);
422 void gss_svc_upcall_put_ctx(struct gss_svc_ctx *ctx);
423 void gss_svc_upcall_destroy_ctx(struct gss_svc_ctx *ctx);
425 int __init gss_init_svc_upcall(void);
426 void gss_exit_svc_upcall(void);
427 extern unsigned int krb5_allow_old_client_csum;
430 void gss_stat_oos_record_cli(int behind);
431 void gss_stat_oos_record_svc(int phase, int replay);
433 int __init gss_init_tunables(void);
434 void gss_exit_tunables(void);
436 /* gss_null_mech.c */
437 int __init init_null_module(void);
438 void cleanup_null_module(void);
440 /* gss_krb5_mech.c */
441 int __init init_kerberos_module(void);
442 void cleanup_kerberos_module(void);
445 #ifdef HAVE_OPENSSL_SSK
446 int __init init_sk_module(void);
447 void cleanup_sk_module(void);
449 static inline int init_sk_module(void) { return 0; }
450 static inline void cleanup_sk_module(void) { return; }
451 #endif /* HAVE_OPENSSL_SSK */
455 void __dbg_memdump(char *name, void *ptr, int size)
457 char *buf, *p = (char *) ptr;
458 int bufsize = size * 2 + 1, i;
460 OBD_ALLOC(buf, bufsize);
462 CDEBUG(D_ERROR, "DUMP ERROR: can't alloc %d bytes\n", bufsize);
466 for (i = 0; i < size; i++)
467 sprintf(&buf[i+i], "%02x", (__u8) p[i]);
468 buf[size + size] = '\0';
469 LCONSOLE_INFO("DUMP %s@%p(%d): %s\n", name, ptr, size, buf);
470 OBD_FREE(buf, bufsize);
473 static inline unsigned int ll_read_key_usage(struct key *key)
475 #ifdef HAVE_KEY_USAGE_REFCOUNT
476 return refcount_read(&key->usage);
478 return atomic_read(&key->usage);
482 #endif /* __PTLRPC_GSS_GSS_INTERNAL_H_ */