| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include <sys/cdefs.h> |
| #include <stdbool.h> |
| #include <stdint.h> |
| |
| __BEGIN_DECLS |
| |
| // Types of an android_fdtrack_event. |
| enum android_fdtrack_event_type { |
| // File descriptor creation: create is the active member of android_fdtrack_event::data. |
| ANDROID_FDTRACK_EVENT_TYPE_CREATE, |
| |
| // File descriptor closed. |
| ANDROID_FDTRACK_EVENT_TYPE_CLOSE, |
| }; |
| |
| struct android_fdtrack_event { |
| // File descriptor for which this event occurred. |
| int fd; |
| |
| // Type of event: this is one of the enumerators of android_fdtrack_event_type. |
| uint8_t type; |
| |
| // Data for the event. |
| union { |
| struct { |
| const char* function_name; |
| } create; |
| } data; |
| }; |
| |
| // Callback invoked upon file descriptor creation/closure. |
| typedef void (*android_fdtrack_hook_t)(struct android_fdtrack_event*); |
| |
| // Register a hook which is called to track fd lifecycle events. |
| bool android_fdtrack_compare_exchange_hook(android_fdtrack_hook_t* expected, android_fdtrack_hook_t value) __INTRODUCED_IN(30); |
| |
| // Enable/disable fdtrack *on the current thread*. |
| // This is primarily useful when performing operations which you don't want to track |
| // (e.g. when emitting already-recorded information). |
| bool android_fdtrack_get_enabled() __INTRODUCED_IN(30); |
| bool android_fdtrack_set_enabled(bool new_value) __INTRODUCED_IN(30); |
| |
| // Globally enable/disable fdtrack. |
| // This is primaryily useful to reenable fdtrack after it's been automatically disabled post-fork. |
| void android_fdtrack_set_globally_enabled(bool new_value) __INTRODUCED_IN(31); |
| |
| __END_DECLS |