/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright 2003 Alexander Kabaev. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _RTLD_LOCK_H_ #define _RTLD_LOCK_H_ #define RTLI_VERSION 0x01 #define MAX_RTLD_LOCKS 8 struct RtldLockInfo { unsigned int rtli_version; void *(*lock_create)(void); void (*lock_destroy)(void *); void (*rlock_acquire)(void *); void (*wlock_acquire)(void *); void (*lock_release)(void *); int (*thread_set_flag)(int); int (*thread_clr_flag)(int); void (*at_fork)(void); }; extern void _rtld_thread_init(struct RtldLockInfo *) __exported; extern void _rtld_atfork_pre(int *) __exported; extern void _rtld_atfork_post(int *) __exported; #ifdef IN_RTLD struct rtld_lock; typedef struct rtld_lock *rtld_lock_t; extern rtld_lock_t rtld_bind_lock; extern rtld_lock_t rtld_libc_lock; extern rtld_lock_t rtld_phdr_lock; #define RTLD_LOCK_UNLOCKED 0 #define RTLD_LOCK_RLOCKED 1 #define RTLD_LOCK_WLOCKED 2 struct Struct_RtldLockState; typedef struct Struct_RtldLockState RtldLockState; void rlock_acquire(rtld_lock_t, RtldLockState *); void wlock_acquire(rtld_lock_t, RtldLockState *); void lock_release(rtld_lock_t, RtldLockState *); void lock_upgrade(rtld_lock_t, RtldLockState *); void lock_restart_for_upgrade(RtldLockState *); #endif /* IN_RTLD */ #endif |