2 * Copyright (C) 2016, 2017 "IoT.bzh"
3 * Author José Bollo <jose.bollo@iot.bzh>
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
29 #include <json-c/json.h>
31 #include <afb/afb-req.h>
32 #include <afb/afb-event.h>
34 #include "afb-context.h"
36 #include "afb-session.h"
39 #include "afb-export.h"
45 * Definition of a hook for xreq
47 struct afb_hook_xreq {
48 struct afb_hook_xreq *next; /**< next hook */
49 unsigned refcount; /**< reference count */
50 char *api; /**< api hooked or NULL for any */
51 char *verb; /**< verb hooked or NULL for any */
52 struct afb_session *session; /**< session hooked or NULL if any */
53 unsigned flags; /**< hook flags */
54 struct afb_hook_xreq_itf *itf; /**< interface of hook */
55 void *closure; /**< closure for callbacks */
59 * Definition of a hook for export
61 struct afb_hook_ditf {
62 struct afb_hook_ditf *next; /**< next hook */
63 unsigned refcount; /**< reference count */
64 char *api; /**< api hooked or NULL for any */
65 unsigned flags; /**< hook flags */
66 struct afb_hook_ditf_itf *itf; /**< interface of hook */
67 void *closure; /**< closure for callbacks */
71 * Definition of a hook for export
74 struct afb_hook_svc *next; /**< next hook */
75 unsigned refcount; /**< reference count */
76 char *api; /**< api hooked or NULL for any */
77 unsigned flags; /**< hook flags */
78 struct afb_hook_svc_itf *itf; /**< interface of hook */
79 void *closure; /**< closure for callbacks */
83 * Definition of a hook for evt
86 struct afb_hook_evt *next; /**< next hook */
87 unsigned refcount; /**< reference count */
88 char *pattern; /**< event pattern name hooked or NULL for any */
89 unsigned flags; /**< hook flags */
90 struct afb_hook_evt_itf *itf; /**< interface of hook */
91 void *closure; /**< closure for callbacks */
95 * Definition of a hook for global
97 struct afb_hook_global {
98 struct afb_hook_global *next; /**< next hook */
99 unsigned refcount; /**< reference count */
100 unsigned flags; /**< hook flags */
101 struct afb_hook_global_itf *itf; /**< interface of hook */
102 void *closure; /**< closure for callbacks */
105 /* synchronisation across threads */
106 static pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER;
108 /* list of hooks for xreq */
109 static struct afb_hook_xreq *list_of_xreq_hooks = NULL;
111 /* list of hooks for export */
112 static struct afb_hook_ditf *list_of_ditf_hooks = NULL;
114 /* list of hooks for export */
115 static struct afb_hook_svc *list_of_svc_hooks = NULL;
117 /* list of hooks for evt */
118 static struct afb_hook_evt *list_of_evt_hooks = NULL;
120 /* list of hooks for global */
121 static struct afb_hook_global *list_of_global_hooks = NULL;
124 static unsigned next_hookid = 0;
126 /******************************************************************************
128 *****************************************************************************/
129 static void init_hookid(struct afb_hookid *hookid)
131 hookid->id = __atomic_add_fetch(&next_hookid, 1, __ATOMIC_RELAXED);
132 clock_gettime(CLOCK_MONOTONIC, &hookid->time);
135 /******************************************************************************
136 * section: default callbacks for tracing requests
137 *****************************************************************************/
139 static char *_pbuf_(const char *fmt, va_list args, char **palloc, char *sbuf, size_t szsbuf, size_t *outlen)
146 rc = vsnprintf(sbuf, szsbuf, fmt, args);
147 if ((size_t)rc >= szsbuf) {
149 sbuf[szsbuf-2] = sbuf[szsbuf-3] = sbuf[szsbuf-4] = '.';
150 rc = vasprintf(palloc, fmt, cp);
155 if (rc >= 0 && outlen)
156 *outlen = (size_t)rc;
160 #if 0 /* old behaviour: use NOTICE */
161 static void _hook_(const char *fmt1, const char *fmt2, va_list arg2, ...)
163 char *tag, *data, *mem1, *mem2, buf1[256], buf2[2000];
166 data = _pbuf_(fmt2, arg2, &mem2, buf2, sizeof buf2, NULL);
168 va_start(arg1, arg2);
169 tag = _pbuf_(fmt1, arg1, &mem1, buf1, sizeof buf1, NULL);
172 NOTICE("[HOOK %s] %s", tag, data);
177 #else /* new behaviour: emits directly to stderr */
178 static void _hook_(const char *fmt1, const char *fmt2, va_list arg2, ...)
180 static const char chars[] = "HOOK: [] \n";
181 char *mem1, *mem2, buf1[256], buf2[2000];
185 iov[0].iov_base = (void*)&chars[0];
188 va_start(arg1, arg2);
189 iov[1].iov_base = _pbuf_(fmt1, arg1, &mem1, buf1, sizeof buf1, &iov[1].iov_len);
192 iov[2].iov_base = (void*)&chars[7];
195 iov[3].iov_base = _pbuf_(fmt2, arg2, &mem2, buf2, sizeof buf2, &iov[3].iov_len);
197 iov[4].iov_base = (void*)&chars[9];
207 static void _hook_xreq_(const struct afb_xreq *xreq, const char *format, ...)
210 va_start(ap, format);
211 _hook_("xreq-%06d:%s/%s", format, ap, xreq->hookindex, xreq->request.api, xreq->request.verb);
215 static void hook_xreq_begin_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq)
218 _hook_xreq_(xreq, "BEGIN");
220 _hook_xreq_(xreq, "BEGIN uid=%d=%s gid=%d pid=%d label=%s id=%s",
221 (int)xreq->cred->uid,
223 (int)xreq->cred->gid,
224 (int)xreq->cred->pid,
225 xreq->cred->label?:"(null)",
226 xreq->cred->id?:"(null)"
230 static void hook_xreq_end_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq)
232 _hook_xreq_(xreq, "END");
235 static void hook_xreq_json_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct json_object *obj)
237 _hook_xreq_(xreq, "json() -> %s", json_object_to_json_string(obj));
240 static void hook_xreq_get_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *name, struct afb_arg arg)
242 _hook_xreq_(xreq, "get(%s) -> { name: %s, value: %s, path: %s }", name, arg.name, arg.value, arg.path);
245 static void hook_xreq_success_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct json_object *obj, const char *info)
247 _hook_xreq_(xreq, "success(%s, %s)", json_object_to_json_string(obj), info);
250 static void hook_xreq_fail_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *status, const char *info)
252 _hook_xreq_(xreq, "fail(%s, %s)", status, info);
255 static void hook_xreq_context_get_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, void *value)
257 _hook_xreq_(xreq, "context_get() -> %p", value);
260 static void hook_xreq_context_set_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, void *value, void (*free_value)(void*))
262 _hook_xreq_(xreq, "context_set(%p, %p)", value, free_value);
265 static void hook_xreq_addref_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq)
267 _hook_xreq_(xreq, "addref()");
270 static void hook_xreq_unref_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq)
272 _hook_xreq_(xreq, "unref()");
275 static void hook_xreq_session_close_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq)
277 _hook_xreq_(xreq, "session_close()");
280 static void hook_xreq_session_set_LOA_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, unsigned level, int result)
282 _hook_xreq_(xreq, "session_set_LOA(%u) -> %d", level, result);
285 static void hook_xreq_subscribe_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct afb_eventid *eventid, int result)
287 _hook_xreq_(xreq, "subscribe(%s:%d) -> %d", afb_evt_eventid_fullname(eventid), afb_evt_eventid_id(eventid), result);
290 static void hook_xreq_unsubscribe_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct afb_eventid *eventid, int result)
292 _hook_xreq_(xreq, "unsubscribe(%s:%d) -> %d", afb_evt_eventid_fullname(eventid), afb_evt_eventid_id(eventid), result);
295 static void hook_xreq_subcall_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
297 _hook_xreq_(xreq, "subcall(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
300 static void hook_xreq_subcall_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int status, struct json_object *result)
302 _hook_xreq_(xreq, " ...subcall... -> %d: %s", status, json_object_to_json_string(result));
305 static void hook_xreq_subcallsync_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
307 _hook_xreq_(xreq, "subcallsync(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
310 static void hook_xreq_subcallsync_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int status, struct json_object *result)
312 _hook_xreq_(xreq, " ...subcallsync... -> %d: %s", status, json_object_to_json_string(result));
315 static void hook_xreq_vverbose_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
322 len = vasprintf(&msg, fmt, ap);
326 _hook_xreq_(xreq, "vverbose(%d, %s, %d, %s) -> %s ? ? ?", level, file, line, func, fmt);
328 _hook_xreq_(xreq, "vverbose(%d, %s, %d, %s) -> %s", level, file, line, func, msg);
333 static void hook_xreq_store_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, struct afb_stored_req *sreq)
335 _hook_xreq_(xreq, "store() -> %p", sreq);
338 static void hook_xreq_unstore_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq)
340 _hook_xreq_(xreq, "unstore()");
343 static void hook_xreq_subcall_req_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
345 _hook_xreq_(xreq, "subcall_req(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
348 static void hook_xreq_subcall_req_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int status, struct json_object *result)
350 _hook_xreq_(xreq, " ...subcall_req... -> %d: %s", status, json_object_to_json_string(result));
353 static void hook_xreq_has_permission_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, const char *permission, int result)
355 _hook_xreq_(xreq, "has_permission(%s) -> %d", permission, result);
358 static void hook_xreq_get_application_id_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, char *result)
360 _hook_xreq_(xreq, "get_application_id() -> %s", result);
363 static void hook_xreq_context_make_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int replace, void *(*create_value)(void*), void (*free_value)(void*), void *create_closure, void *result)
365 _hook_xreq_(xreq, "context_make(replace=%s, %p, %p, %p) -> %p", replace?"yes":"no", create_value, free_value, create_closure, result);
368 static void hook_xreq_get_uid_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_xreq *xreq, int result)
370 _hook_xreq_(xreq, "get_uid() -> %d", result);
373 static struct afb_hook_xreq_itf hook_xreq_default_itf = {
374 .hook_xreq_begin = hook_xreq_begin_default_cb,
375 .hook_xreq_end = hook_xreq_end_default_cb,
376 .hook_xreq_json = hook_xreq_json_default_cb,
377 .hook_xreq_get = hook_xreq_get_default_cb,
378 .hook_xreq_success = hook_xreq_success_default_cb,
379 .hook_xreq_fail = hook_xreq_fail_default_cb,
380 .hook_xreq_context_get = hook_xreq_context_get_default_cb,
381 .hook_xreq_context_set = hook_xreq_context_set_default_cb,
382 .hook_xreq_addref = hook_xreq_addref_default_cb,
383 .hook_xreq_unref = hook_xreq_unref_default_cb,
384 .hook_xreq_session_close = hook_xreq_session_close_default_cb,
385 .hook_xreq_session_set_LOA = hook_xreq_session_set_LOA_default_cb,
386 .hook_xreq_subscribe = hook_xreq_subscribe_default_cb,
387 .hook_xreq_unsubscribe = hook_xreq_unsubscribe_default_cb,
388 .hook_xreq_subcall = hook_xreq_subcall_default_cb,
389 .hook_xreq_subcall_result = hook_xreq_subcall_result_default_cb,
390 .hook_xreq_subcallsync = hook_xreq_subcallsync_default_cb,
391 .hook_xreq_subcallsync_result = hook_xreq_subcallsync_result_default_cb,
392 .hook_xreq_vverbose = hook_xreq_vverbose_default_cb,
393 .hook_xreq_store = hook_xreq_store_default_cb,
394 .hook_xreq_unstore = hook_xreq_unstore_default_cb,
395 .hook_xreq_subcall_req = hook_xreq_subcall_req_default_cb,
396 .hook_xreq_subcall_req_result = hook_xreq_subcall_req_result_default_cb,
397 .hook_xreq_has_permission = hook_xreq_has_permission_default_cb,
398 .hook_xreq_get_application_id = hook_xreq_get_application_id_default_cb,
399 .hook_xreq_context_make = hook_xreq_context_make_default_cb,
400 .hook_xreq_get_uid = hook_xreq_get_uid_default_cb,
403 /******************************************************************************
404 * section: hooks for tracing requests
405 *****************************************************************************/
407 #define _HOOK_XREQ_(what,...) \
408 struct afb_hook_xreq *hook; \
409 struct afb_hookid hookid; \
410 pthread_rwlock_rdlock(&rwlock); \
411 init_hookid(&hookid); \
412 hook = list_of_xreq_hooks; \
414 if (hook->itf->hook_xreq_##what \
415 && (hook->flags & afb_hook_flag_req_##what) != 0 \
416 && (!hook->session || hook->session == xreq->context.session) \
417 && (!hook->api || !strcasecmp(hook->api, xreq->request.api)) \
418 && (!hook->verb || !strcasecmp(hook->verb, xreq->request.verb))) { \
419 hook->itf->hook_xreq_##what(hook->closure, &hookid, __VA_ARGS__); \
423 pthread_rwlock_unlock(&rwlock);
426 void afb_hook_xreq_begin(const struct afb_xreq *xreq)
428 _HOOK_XREQ_(begin, xreq);
431 void afb_hook_xreq_end(const struct afb_xreq *xreq)
433 _HOOK_XREQ_(end, xreq);
436 struct json_object *afb_hook_xreq_json(const struct afb_xreq *xreq, struct json_object *obj)
438 _HOOK_XREQ_(json, xreq, obj);
442 struct afb_arg afb_hook_xreq_get(const struct afb_xreq *xreq, const char *name, struct afb_arg arg)
444 _HOOK_XREQ_(get, xreq, name, arg);
448 void afb_hook_xreq_success(const struct afb_xreq *xreq, struct json_object *obj, const char *info)
450 _HOOK_XREQ_(success, xreq, obj, info);
453 void afb_hook_xreq_fail(const struct afb_xreq *xreq, const char *status, const char *info)
455 _HOOK_XREQ_(fail, xreq, status, info);
458 void *afb_hook_xreq_context_get(const struct afb_xreq *xreq, void *value)
460 _HOOK_XREQ_(context_get, xreq, value);
464 void afb_hook_xreq_context_set(const struct afb_xreq *xreq, void *value, void (*free_value)(void*))
466 _HOOK_XREQ_(context_set, xreq, value, free_value);
469 void afb_hook_xreq_addref(const struct afb_xreq *xreq)
471 _HOOK_XREQ_(addref, xreq);
474 void afb_hook_xreq_unref(const struct afb_xreq *xreq)
476 _HOOK_XREQ_(unref, xreq);
479 void afb_hook_xreq_session_close(const struct afb_xreq *xreq)
481 _HOOK_XREQ_(session_close, xreq);
484 int afb_hook_xreq_session_set_LOA(const struct afb_xreq *xreq, unsigned level, int result)
486 _HOOK_XREQ_(session_set_LOA, xreq, level, result);
490 int afb_hook_xreq_subscribe(const struct afb_xreq *xreq, struct afb_eventid *eventid, int result)
492 _HOOK_XREQ_(subscribe, xreq, eventid, result);
496 int afb_hook_xreq_unsubscribe(const struct afb_xreq *xreq, struct afb_eventid *eventid, int result)
498 _HOOK_XREQ_(unsubscribe, xreq, eventid, result);
502 void afb_hook_xreq_subcall(const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
504 _HOOK_XREQ_(subcall, xreq, api, verb, args);
507 void afb_hook_xreq_subcall_result(const struct afb_xreq *xreq, int status, struct json_object *result)
509 _HOOK_XREQ_(subcall_result, xreq, status, result);
512 void afb_hook_xreq_subcallsync(const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
514 _HOOK_XREQ_(subcallsync, xreq, api, verb, args);
517 int afb_hook_xreq_subcallsync_result(const struct afb_xreq *xreq, int status, struct json_object *result)
519 _HOOK_XREQ_(subcallsync_result, xreq, status, result);
523 void afb_hook_xreq_vverbose(const struct afb_xreq *xreq, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
525 _HOOK_XREQ_(vverbose, xreq, level, file ?: "?", line, func ?: "?", fmt, args);
528 void afb_hook_xreq_store(const struct afb_xreq *xreq, struct afb_stored_req *sreq)
530 _HOOK_XREQ_(store, xreq, sreq);
533 void afb_hook_xreq_unstore(const struct afb_xreq *xreq)
535 _HOOK_XREQ_(unstore, xreq);
538 void afb_hook_xreq_subcall_req(const struct afb_xreq *xreq, const char *api, const char *verb, struct json_object *args)
540 _HOOK_XREQ_(subcall_req, xreq, api, verb, args);
543 void afb_hook_xreq_subcall_req_result(const struct afb_xreq *xreq, int status, struct json_object *result)
545 _HOOK_XREQ_(subcall_req_result, xreq, status, result);
548 int afb_hook_xreq_has_permission(const struct afb_xreq *xreq, const char *permission, int result)
550 _HOOK_XREQ_(has_permission, xreq, permission, result);
554 char *afb_hook_xreq_get_application_id(const struct afb_xreq *xreq, char *result)
556 _HOOK_XREQ_(get_application_id, xreq, result);
560 void *afb_hook_xreq_context_make(const struct afb_xreq *xreq, int replace, void *(*create_value)(void*), void (*free_value)(void*), void *create_closure, void *result)
562 _HOOK_XREQ_(context_make, xreq, replace, create_value, free_value, create_closure, result);
566 int afb_hook_xreq_get_uid(const struct afb_xreq *xreq, int result)
568 _HOOK_XREQ_(get_uid, xreq, result);
572 /******************************************************************************
573 * section: hooking xreqs
574 *****************************************************************************/
576 void afb_hook_init_xreq(struct afb_xreq *xreq)
582 struct afb_hook_xreq *hook;
584 /* scan hook list to get the expected flags */
586 if (afb_api_is_hookable(xreq->request.api)) {
587 pthread_rwlock_rdlock(&rwlock);
588 hook = list_of_xreq_hooks;
590 f = hook->flags & afb_hook_flags_req_all;
592 && (!hook->session || hook->session == xreq->context.session)
593 && (!hook->api || !strcasecmp(hook->api, xreq->request.api))
594 && (!hook->verb || !strcasecmp(hook->verb, xreq->request.verb));
599 pthread_rwlock_unlock(&rwlock);
602 /* store the hooking data */
603 xreq->hookflags = flags;
605 pthread_rwlock_wrlock(&rwlock);
608 xreq->hookindex = reqindex;
609 pthread_rwlock_unlock(&rwlock);
613 struct afb_hook_xreq *afb_hook_create_xreq(const char *api, const char *verb, struct afb_session *session, int flags, struct afb_hook_xreq_itf *itf, void *closure)
615 struct afb_hook_xreq *hook;
617 /* alloc the result */
618 hook = calloc(1, sizeof *hook);
622 /* get a copy of the names */
623 hook->api = api ? strdup(api) : NULL;
624 hook->verb = verb ? strdup(verb) : NULL;
625 if ((api && !hook->api) || (verb && !hook->verb)) {
632 /* initialise the rest */
633 hook->session = session;
635 afb_session_addref(session);
638 hook->itf = itf ? itf : &hook_xreq_default_itf;
639 hook->closure = closure;
641 /* record the hook */
642 pthread_rwlock_wrlock(&rwlock);
643 hook->next = list_of_xreq_hooks;
644 list_of_xreq_hooks = hook;
645 pthread_rwlock_unlock(&rwlock);
651 struct afb_hook_xreq *afb_hook_addref_xreq(struct afb_hook_xreq *hook)
653 pthread_rwlock_wrlock(&rwlock);
655 pthread_rwlock_unlock(&rwlock);
659 void afb_hook_unref_xreq(struct afb_hook_xreq *hook)
661 struct afb_hook_xreq **prv;
664 pthread_rwlock_wrlock(&rwlock);
665 if (--hook->refcount)
669 prv = &list_of_xreq_hooks;
670 while (*prv && *prv != hook)
675 pthread_rwlock_unlock(&rwlock);
681 afb_session_unref(hook->session);
687 /******************************************************************************
688 * section: default callbacks for tracing daemon interface
689 *****************************************************************************/
691 static void _hook_ditf_(const struct afb_export *export, const char *format, ...)
694 va_start(ap, format);
695 _hook_("export-%s", format, ap, afb_export_apiname(export));
699 static void hook_ditf_event_broadcast_before_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *name, struct json_object *object)
701 _hook_ditf_(export, "event_broadcast.before(%s, %s)....", name, json_object_to_json_string(object));
704 static void hook_ditf_event_broadcast_after_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *name, struct json_object *object, int result)
706 _hook_ditf_(export, "event_broadcast.after(%s, %s) -> %d", name, json_object_to_json_string(object), result);
709 static void hook_ditf_get_event_loop_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, struct sd_event *result)
711 _hook_ditf_(export, "get_event_loop() -> %p", result);
714 static void hook_ditf_get_user_bus_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, struct sd_bus *result)
716 _hook_ditf_(export, "get_user_bus() -> %p", result);
719 static void hook_ditf_get_system_bus_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, struct sd_bus *result)
721 _hook_ditf_(export, "get_system_bus() -> %p", result);
724 static void hook_ditf_vverbose_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, int level, const char *file, int line, const char *function, const char *fmt, va_list args)
731 len = vasprintf(&msg, fmt, ap);
735 _hook_ditf_(export, "vverbose(%d, %s, %d, %s) -> %s ? ? ?", level, file, line, function, fmt);
737 _hook_ditf_(export, "vverbose(%d, %s, %d, %s) -> %s", level, file, line, function, msg);
742 static void hook_ditf_event_make_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *name, struct afb_eventid *result)
744 _hook_ditf_(export, "event_make(%s) -> %s:%d", name, afb_evt_eventid_fullname(result), afb_evt_eventid_id(result));
747 static void hook_ditf_rootdir_get_fd_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, int result)
751 _hook_ditf_(export, "rootdir_get_fd() -> %d, %m", result);
753 sprintf(path, "/proc/self/fd/%d", result);
754 readlink(path, path, sizeof path);
755 _hook_ditf_(export, "rootdir_get_fd() -> %d = %s", result, path);
759 static void hook_ditf_rootdir_open_locale_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *filename, int flags, const char *locale, int result)
765 _hook_ditf_(export, "rootdir_open_locale(%s, %d, %s) -> %d, %m", filename, flags, locale, result);
767 sprintf(path, "/proc/self/fd/%d", result);
768 readlink(path, path, sizeof path);
769 _hook_ditf_(export, "rootdir_open_locale(%s, %d, %s) -> %d = %s", filename, flags, locale, result, path);
773 static void hook_ditf_queue_job_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, void (*callback)(int signum, void *arg), void *argument, void *group, int timeout, int result)
775 _hook_ditf_(export, "queue_job(%p, %p, %p, %d) -> %d", callback, argument, group, timeout, result);
778 static void hook_ditf_unstore_req_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, struct afb_stored_req *sreq)
780 _hook_ditf_(export, "unstore_req(%p)", sreq);
783 static void hook_ditf_require_api_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *name, int initialized)
785 _hook_ditf_(export, "require_api(%s, %d)...", name, initialized);
788 static void hook_ditf_require_api_result_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *name, int initialized, int result)
790 _hook_ditf_(export, "...require_api(%s, %d) -> %d", name, initialized, result);
793 static void hook_ditf_rename_api_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *oldname, const char *newname, int result)
795 _hook_ditf_(export, "rename_api(%s -> %s) -> %d", oldname, newname, result);
798 static struct afb_hook_ditf_itf hook_ditf_default_itf = {
799 .hook_ditf_event_broadcast_before = hook_ditf_event_broadcast_before_cb,
800 .hook_ditf_event_broadcast_after = hook_ditf_event_broadcast_after_cb,
801 .hook_ditf_get_event_loop = hook_ditf_get_event_loop_cb,
802 .hook_ditf_get_user_bus = hook_ditf_get_user_bus_cb,
803 .hook_ditf_get_system_bus = hook_ditf_get_system_bus_cb,
804 .hook_ditf_vverbose = hook_ditf_vverbose_cb,
805 .hook_ditf_event_make = hook_ditf_event_make_cb,
806 .hook_ditf_rootdir_get_fd = hook_ditf_rootdir_get_fd_cb,
807 .hook_ditf_rootdir_open_locale = hook_ditf_rootdir_open_locale_cb,
808 .hook_ditf_queue_job = hook_ditf_queue_job_cb,
809 .hook_ditf_unstore_req = hook_ditf_unstore_req_cb,
810 .hook_ditf_require_api = hook_ditf_require_api_cb,
811 .hook_ditf_require_api_result = hook_ditf_require_api_result_cb,
812 .hook_ditf_rename_api = hook_ditf_rename_api_cb
815 /******************************************************************************
816 * section: hooks for tracing daemon interface (export)
817 *****************************************************************************/
819 #define _HOOK_DITF_(what,...) \
820 struct afb_hook_ditf *hook; \
821 struct afb_hookid hookid; \
822 const char *apiname = afb_export_apiname(export); \
823 pthread_rwlock_rdlock(&rwlock); \
824 init_hookid(&hookid); \
825 hook = list_of_ditf_hooks; \
827 if (hook->itf->hook_ditf_##what \
828 && (hook->flags & afb_hook_flag_ditf_##what) != 0 \
829 && (!hook->api || !strcasecmp(hook->api, apiname))) { \
830 hook->itf->hook_ditf_##what(hook->closure, &hookid, __VA_ARGS__); \
834 pthread_rwlock_unlock(&rwlock);
836 void afb_hook_ditf_event_broadcast_before(const struct afb_export *export, const char *name, struct json_object *object)
838 _HOOK_DITF_(event_broadcast_before, export, name, object);
841 int afb_hook_ditf_event_broadcast_after(const struct afb_export *export, const char *name, struct json_object *object, int result)
843 _HOOK_DITF_(event_broadcast_after, export, name, object, result);
847 struct sd_event *afb_hook_ditf_get_event_loop(const struct afb_export *export, struct sd_event *result)
849 _HOOK_DITF_(get_event_loop, export, result);
853 struct sd_bus *afb_hook_ditf_get_user_bus(const struct afb_export *export, struct sd_bus *result)
855 _HOOK_DITF_(get_user_bus, export, result);
859 struct sd_bus *afb_hook_ditf_get_system_bus(const struct afb_export *export, struct sd_bus *result)
861 _HOOK_DITF_(get_system_bus, export, result);
865 void afb_hook_ditf_vverbose(const struct afb_export *export, int level, const char *file, int line, const char *function, const char *fmt, va_list args)
867 _HOOK_DITF_(vverbose, export, level, file, line, function, fmt, args);
870 struct afb_eventid *afb_hook_ditf_event_make(const struct afb_export *export, const char *name, struct afb_eventid *result)
872 _HOOK_DITF_(event_make, export, name, result);
876 int afb_hook_ditf_rootdir_get_fd(const struct afb_export *export, int result)
878 _HOOK_DITF_(rootdir_get_fd, export, result);
882 int afb_hook_ditf_rootdir_open_locale(const struct afb_export *export, const char *filename, int flags, const char *locale, int result)
884 _HOOK_DITF_(rootdir_open_locale, export, filename, flags, locale, result);
888 int afb_hook_ditf_queue_job(const struct afb_export *export, void (*callback)(int signum, void *arg), void *argument, void *group, int timeout, int result)
890 _HOOK_DITF_(queue_job, export, callback, argument, group, timeout, result);
894 void afb_hook_ditf_unstore_req(const struct afb_export *export, struct afb_stored_req *sreq)
896 _HOOK_DITF_(unstore_req, export, sreq);
899 void afb_hook_ditf_require_api(const struct afb_export *export, const char *name, int initialized)
901 _HOOK_DITF_(require_api, export, name, initialized);
904 int afb_hook_ditf_require_api_result(const struct afb_export *export, const char *name, int initialized, int result)
906 _HOOK_DITF_(require_api_result, export, name, initialized, result);
910 int afb_hook_ditf_rename_api(const struct afb_export *export, const char *oldname, const char *newname, int result)
912 _HOOK_DITF_(rename_api, export, oldname, newname, result);
916 /******************************************************************************
917 * section: hooking export
918 *****************************************************************************/
920 int afb_hook_flags_ditf(const char *api)
923 struct afb_hook_ditf *hook;
926 if (!api || afb_api_is_hookable(api)) {
927 pthread_rwlock_rdlock(&rwlock);
928 hook = list_of_ditf_hooks;
930 if (!api || !hook->api || !strcasecmp(hook->api, api))
931 flags |= hook->flags;
934 pthread_rwlock_unlock(&rwlock);
939 struct afb_hook_ditf *afb_hook_create_ditf(const char *api, int flags, struct afb_hook_ditf_itf *itf, void *closure)
941 struct afb_hook_ditf *hook;
943 /* alloc the result */
944 hook = calloc(1, sizeof *hook);
948 /* get a copy of the names */
949 hook->api = api ? strdup(api) : NULL;
950 if (api && !hook->api) {
955 /* initialise the rest */
958 hook->itf = itf ? itf : &hook_ditf_default_itf;
959 hook->closure = closure;
961 /* record the hook */
962 pthread_rwlock_wrlock(&rwlock);
963 hook->next = list_of_ditf_hooks;
964 list_of_ditf_hooks = hook;
965 pthread_rwlock_unlock(&rwlock);
971 struct afb_hook_ditf *afb_hook_addref_ditf(struct afb_hook_ditf *hook)
973 pthread_rwlock_wrlock(&rwlock);
975 pthread_rwlock_unlock(&rwlock);
979 void afb_hook_unref_ditf(struct afb_hook_ditf *hook)
981 struct afb_hook_ditf **prv;
984 pthread_rwlock_wrlock(&rwlock);
985 if (--hook->refcount)
989 prv = &list_of_ditf_hooks;
990 while (*prv && *prv != hook)
995 pthread_rwlock_unlock(&rwlock);
1004 /******************************************************************************
1005 * section: default callbacks for tracing service interface (export)
1006 *****************************************************************************/
1008 static void _hook_svc_(const struct afb_export *export, const char *format, ...)
1011 va_start(ap, format);
1012 _hook_("export-%s", format, ap, afb_export_apiname(export));
1016 static void hook_svc_start_before_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export)
1018 _hook_svc_(export, "start.before");
1021 static void hook_svc_start_after_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, int status)
1023 _hook_svc_(export, "start.after -> %d", status);
1026 static void hook_svc_on_event_before_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *event, int eventid, struct json_object *object)
1028 _hook_svc_(export, "on_event.before(%s, %d, %s)", event, eventid, json_object_to_json_string(object));
1031 static void hook_svc_on_event_after_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *event, int eventid, struct json_object *object)
1033 _hook_svc_(export, "on_event.after(%s, %d, %s)", event, eventid, json_object_to_json_string(object));
1036 static void hook_svc_call_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *api, const char *verb, struct json_object *args)
1038 _hook_svc_(export, "call(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
1041 static void hook_svc_call_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, int status, struct json_object *result)
1043 _hook_svc_(export, " ...call... -> %d: %s", status, json_object_to_json_string(result));
1046 static void hook_svc_callsync_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, const char *api, const char *verb, struct json_object *args)
1048 _hook_svc_(export, "callsync(%s/%s, %s) ...", api, verb, json_object_to_json_string(args));
1051 static void hook_svc_callsync_result_default_cb(void *closure, const struct afb_hookid *hookid, const struct afb_export *export, int status, struct json_object *result)
1053 _hook_svc_(export, " ...callsync... -> %d: %s", status, json_object_to_json_string(result));
1056 static struct afb_hook_svc_itf hook_svc_default_itf = {
1057 .hook_svc_start_before = hook_svc_start_before_default_cb,
1058 .hook_svc_start_after = hook_svc_start_after_default_cb,
1059 .hook_svc_on_event_before = hook_svc_on_event_before_default_cb,
1060 .hook_svc_on_event_after = hook_svc_on_event_after_default_cb,
1061 .hook_svc_call = hook_svc_call_default_cb,
1062 .hook_svc_call_result = hook_svc_call_result_default_cb,
1063 .hook_svc_callsync = hook_svc_callsync_default_cb,
1064 .hook_svc_callsync_result = hook_svc_callsync_result_default_cb
1067 /******************************************************************************
1068 * section: hooks for tracing service interface (export)
1069 *****************************************************************************/
1071 #define _HOOK_SVC_(what,...) \
1072 struct afb_hook_svc *hook; \
1073 struct afb_hookid hookid; \
1074 const char *apiname = afb_export_apiname(export); \
1075 pthread_rwlock_rdlock(&rwlock); \
1076 init_hookid(&hookid); \
1077 hook = list_of_svc_hooks; \
1079 if (hook->itf->hook_svc_##what \
1080 && (hook->flags & afb_hook_flag_svc_##what) != 0 \
1081 && (!hook->api || !strcasecmp(hook->api, apiname))) { \
1082 hook->itf->hook_svc_##what(hook->closure, &hookid, __VA_ARGS__); \
1084 hook = hook->next; \
1086 pthread_rwlock_unlock(&rwlock);
1088 void afb_hook_svc_start_before(const struct afb_export *export)
1090 _HOOK_SVC_(start_before, export);
1093 int afb_hook_svc_start_after(const struct afb_export *export, int status)
1095 _HOOK_SVC_(start_after, export, status);
1099 void afb_hook_svc_on_event_before(const struct afb_export *export, const char *event, int eventid, struct json_object *object)
1101 _HOOK_SVC_(on_event_before, export, event, eventid, object);
1104 void afb_hook_svc_on_event_after(const struct afb_export *export, const char *event, int eventid, struct json_object *object)
1106 _HOOK_SVC_(on_event_after, export, event, eventid, object);
1109 void afb_hook_svc_call(const struct afb_export *export, const char *api, const char *verb, struct json_object *args)
1111 _HOOK_SVC_(call, export, api, verb, args);
1114 void afb_hook_svc_call_result(const struct afb_export *export, int status, struct json_object *result)
1116 _HOOK_SVC_(call_result, export, status, result);
1119 void afb_hook_svc_callsync(const struct afb_export *export, const char *api, const char *verb, struct json_object *args)
1121 _HOOK_SVC_(callsync, export, api, verb, args);
1124 int afb_hook_svc_callsync_result(const struct afb_export *export, int status, struct json_object *result)
1126 _HOOK_SVC_(callsync_result, export, status, result);
1130 /******************************************************************************
1131 * section: hooking services (export)
1132 *****************************************************************************/
1134 int afb_hook_flags_svc(const char *api)
1137 struct afb_hook_svc *hook;
1140 if (!api || afb_api_is_hookable(api)) {
1141 pthread_rwlock_rdlock(&rwlock);
1142 hook = list_of_svc_hooks;
1144 if (!api || !hook->api || !strcasecmp(hook->api, api))
1145 flags |= hook->flags;
1148 pthread_rwlock_unlock(&rwlock);
1153 struct afb_hook_svc *afb_hook_create_svc(const char *api, int flags, struct afb_hook_svc_itf *itf, void *closure)
1155 struct afb_hook_svc *hook;
1157 /* alloc the result */
1158 hook = calloc(1, sizeof *hook);
1162 /* get a copy of the names */
1163 hook->api = api ? strdup(api) : NULL;
1164 if (api && !hook->api) {
1169 /* initialise the rest */
1171 hook->flags = flags;
1172 hook->itf = itf ? itf : &hook_svc_default_itf;
1173 hook->closure = closure;
1175 /* record the hook */
1176 pthread_rwlock_wrlock(&rwlock);
1177 hook->next = list_of_svc_hooks;
1178 list_of_svc_hooks = hook;
1179 pthread_rwlock_unlock(&rwlock);
1185 struct afb_hook_svc *afb_hook_addref_svc(struct afb_hook_svc *hook)
1187 pthread_rwlock_wrlock(&rwlock);
1189 pthread_rwlock_unlock(&rwlock);
1193 void afb_hook_unref_svc(struct afb_hook_svc *hook)
1195 struct afb_hook_svc **prv;
1198 pthread_rwlock_wrlock(&rwlock);
1199 if (--hook->refcount)
1203 prv = &list_of_svc_hooks;
1204 while (*prv && *prv != hook)
1205 prv = &(*prv)->next;
1209 pthread_rwlock_unlock(&rwlock);
1218 /******************************************************************************
1219 * section: default callbacks for tracing service interface (evt)
1220 *****************************************************************************/
1222 static void _hook_evt_(const char *evt, int id, const char *format, ...)
1225 va_start(ap, format);
1226 _hook_("evt-%s:%d", format, ap, evt, id);
1230 static void hook_evt_create_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id)
1232 _hook_evt_(evt, id, "create");
1235 static void hook_evt_push_before_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj)
1237 _hook_evt_(evt, id, "push.before(%s)", json_object_to_json_string(obj));
1241 static void hook_evt_push_after_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj, int result)
1243 _hook_evt_(evt, id, "push.after(%s) -> %d", json_object_to_json_string(obj), result);
1246 static void hook_evt_broadcast_before_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj)
1248 _hook_evt_(evt, id, "broadcast.before(%s)", json_object_to_json_string(obj));
1251 static void hook_evt_broadcast_after_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, struct json_object *obj, int result)
1253 _hook_evt_(evt, id, "broadcast.after(%s) -> %d", json_object_to_json_string(obj), result);
1256 static void hook_evt_name_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id, const char *result)
1258 _hook_evt_(evt, id, "name -> %s", result);
1261 static void hook_evt_addref_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id)
1263 _hook_evt_(evt, id, "addref");
1266 static void hook_evt_unref_default_cb(void *closure, const struct afb_hookid *hookid, const char *evt, int id)
1268 _hook_evt_(evt, id, "unref");
1271 static struct afb_hook_evt_itf hook_evt_default_itf = {
1272 .hook_evt_create = hook_evt_create_default_cb,
1273 .hook_evt_push_before = hook_evt_push_before_default_cb,
1274 .hook_evt_push_after = hook_evt_push_after_default_cb,
1275 .hook_evt_broadcast_before = hook_evt_broadcast_before_default_cb,
1276 .hook_evt_broadcast_after = hook_evt_broadcast_after_default_cb,
1277 .hook_evt_name = hook_evt_name_default_cb,
1278 .hook_evt_addref = hook_evt_addref_default_cb,
1279 .hook_evt_unref = hook_evt_unref_default_cb
1282 /******************************************************************************
1283 * section: hooks for tracing events interface (evt)
1284 *****************************************************************************/
1286 #define _HOOK_EVT_(what,...) \
1287 struct afb_hook_evt *hook; \
1288 struct afb_hookid hookid; \
1289 pthread_rwlock_rdlock(&rwlock); \
1290 init_hookid(&hookid); \
1291 hook = list_of_evt_hooks; \
1293 if (hook->itf->hook_evt_##what \
1294 && (hook->flags & afb_hook_flag_evt_##what) != 0 \
1295 && (!hook->pattern || !fnmatch(hook->pattern, evt, FNM_CASEFOLD))) { \
1296 hook->itf->hook_evt_##what(hook->closure, &hookid, __VA_ARGS__); \
1298 hook = hook->next; \
1300 pthread_rwlock_unlock(&rwlock);
1302 void afb_hook_evt_create(const char *evt, int id)
1304 _HOOK_EVT_(create, evt, id);
1307 void afb_hook_evt_push_before(const char *evt, int id, struct json_object *obj)
1309 _HOOK_EVT_(push_before, evt, id, obj);
1312 int afb_hook_evt_push_after(const char *evt, int id, struct json_object *obj, int result)
1314 _HOOK_EVT_(push_after, evt, id, obj, result);
1318 void afb_hook_evt_broadcast_before(const char *evt, int id, struct json_object *obj)
1320 _HOOK_EVT_(broadcast_before, evt, id, obj);
1323 int afb_hook_evt_broadcast_after(const char *evt, int id, struct json_object *obj, int result)
1325 _HOOK_EVT_(broadcast_after, evt, id, obj, result);
1329 void afb_hook_evt_name(const char *evt, int id, const char *result)
1331 _HOOK_EVT_(name, evt, id, result);
1334 void afb_hook_evt_addref(const char *evt, int id)
1336 _HOOK_EVT_(addref, evt, id);
1339 void afb_hook_evt_unref(const char *evt, int id)
1341 _HOOK_EVT_(unref, evt, id);
1344 /******************************************************************************
1345 * section: hooking services (evt)
1346 *****************************************************************************/
1348 int afb_hook_flags_evt(const char *name)
1351 struct afb_hook_evt *hook;
1354 if (!name || afb_api_is_hookable(name)) {
1355 pthread_rwlock_rdlock(&rwlock);
1356 hook = list_of_evt_hooks;
1358 if (!name || !hook->pattern || !fnmatch(hook->pattern, name, FNM_CASEFOLD))
1359 flags |= hook->flags;
1362 pthread_rwlock_unlock(&rwlock);
1367 struct afb_hook_evt *afb_hook_create_evt(const char *pattern, int flags, struct afb_hook_evt_itf *itf, void *closure)
1369 struct afb_hook_evt *hook;
1371 /* alloc the result */
1372 hook = calloc(1, sizeof *hook);
1376 /* get a copy of the names */
1377 hook->pattern = pattern ? strdup(pattern) : NULL;
1378 if (pattern && !hook->pattern) {
1383 /* initialise the rest */
1385 hook->flags = flags;
1386 hook->itf = itf ? itf : &hook_evt_default_itf;
1387 hook->closure = closure;
1389 /* record the hook */
1390 pthread_rwlock_wrlock(&rwlock);
1391 hook->next = list_of_evt_hooks;
1392 list_of_evt_hooks = hook;
1393 pthread_rwlock_unlock(&rwlock);
1399 struct afb_hook_evt *afb_hook_addref_evt(struct afb_hook_evt *hook)
1401 pthread_rwlock_wrlock(&rwlock);
1403 pthread_rwlock_unlock(&rwlock);
1407 void afb_hook_unref_evt(struct afb_hook_evt *hook)
1409 struct afb_hook_evt **prv;
1412 pthread_rwlock_wrlock(&rwlock);
1413 if (--hook->refcount)
1417 prv = &list_of_evt_hooks;
1418 while (*prv && *prv != hook)
1419 prv = &(*prv)->next;
1423 pthread_rwlock_unlock(&rwlock);
1426 free(hook->pattern);
1432 /******************************************************************************
1433 * section: default callbacks for globals (global)
1434 *****************************************************************************/
1436 static void _hook_global_(const char *format, ...)
1439 va_start(ap, format);
1440 _hook_("global", format, ap);
1444 static void hook_global_vverbose_default_cb(void *closure, const struct afb_hookid *hookid, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
1451 len = vasprintf(&msg, fmt, ap);
1455 _hook_global_("vverbose(%d, %s, %d, %s) -> %s ? ? ?", level, file, line, func, fmt);
1457 _hook_global_("vverbose(%d, %s, %d, %s) -> %s", level, file, line, func, msg);
1462 static struct afb_hook_global_itf hook_global_default_itf = {
1463 .hook_global_vverbose = hook_global_vverbose_default_cb
1466 /******************************************************************************
1467 * section: hooks for tracing globals (global)
1468 *****************************************************************************/
1470 #define _HOOK_GLOBAL_(what,...) \
1471 struct afb_hook_global *hook; \
1472 struct afb_hookid hookid; \
1473 pthread_rwlock_rdlock(&rwlock); \
1474 init_hookid(&hookid); \
1475 hook = list_of_global_hooks; \
1477 if (hook->itf->hook_global_##what \
1478 && (hook->flags & afb_hook_flag_global_##what) != 0) { \
1479 hook->itf->hook_global_##what(hook->closure, &hookid, __VA_ARGS__); \
1481 hook = hook->next; \
1483 pthread_rwlock_unlock(&rwlock);
1485 static void afb_hook_global_vverbose(int level, const char *file, int line, const char *func, const char *fmt, va_list args)
1487 _HOOK_GLOBAL_(vverbose, level, file ?: "?", line, func ?: "?", fmt ?: "", args);
1490 /******************************************************************************
1491 * section: hooking globals (global)
1492 *****************************************************************************/
1494 static void update_global()
1496 struct afb_hook_global *hook;
1499 pthread_rwlock_rdlock(&rwlock);
1500 hook = list_of_global_hooks;
1502 flags = hook->flags;
1505 verbose_observer = (flags & afb_hook_flag_global_vverbose) ? afb_hook_global_vverbose : NULL;
1506 pthread_rwlock_unlock(&rwlock);
1509 struct afb_hook_global *afb_hook_create_global(int flags, struct afb_hook_global_itf *itf, void *closure)
1511 struct afb_hook_global *hook;
1513 /* alloc the result */
1514 hook = calloc(1, sizeof *hook);
1518 /* initialise the rest */
1520 hook->flags = flags;
1521 hook->itf = itf ? itf : &hook_global_default_itf;
1522 hook->closure = closure;
1524 /* record the hook */
1525 pthread_rwlock_wrlock(&rwlock);
1526 hook->next = list_of_global_hooks;
1527 list_of_global_hooks = hook;
1528 pthread_rwlock_unlock(&rwlock);
1530 /* update hooking */
1537 struct afb_hook_global *afb_hook_addref_global(struct afb_hook_global *hook)
1539 pthread_rwlock_wrlock(&rwlock);
1541 pthread_rwlock_unlock(&rwlock);
1545 void afb_hook_unref_global(struct afb_hook_global *hook)
1547 struct afb_hook_global **prv;
1550 pthread_rwlock_wrlock(&rwlock);
1551 if (--hook->refcount)
1555 prv = &list_of_global_hooks;
1556 while (*prv && *prv != hook)
1557 prv = &(*prv)->next;
1561 pthread_rwlock_unlock(&rwlock);
1566 /* update hooking */