mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-30 08:43:23 +00:00
140 lines
5.0 KiB
C
140 lines
5.0 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1994
|
|
* The Regents of the University of California. 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.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*/
|
|
|
|
#ifndef _DLFCN_H_
|
|
#define _DLFCN_H_
|
|
|
|
#include <sys/_types.h>
|
|
|
|
/*
|
|
* Modes and flags for dlopen().
|
|
*/
|
|
#define RTLD_LAZY 1 /* Bind function calls lazily. */
|
|
#define RTLD_NOW 2 /* Bind function calls immediately. */
|
|
#define RTLD_MODEMASK 0x3
|
|
#define RTLD_GLOBAL 0x100 /* Make symbols globally available. */
|
|
#define RTLD_LOCAL 0 /* Opposite of RTLD_GLOBAL, and the default. */
|
|
#define RTLD_TRACE 0x200 /* Trace loaded objects and exit. */
|
|
#define RTLD_NODELETE 0x01000 /* Do not remove members. */
|
|
#define RTLD_NOLOAD 0x02000 /* Do not load if not already loaded. */
|
|
#define RTLD_DEEPBIND 0x04000 /* Put symbols from the dso ahead of
|
|
the global list */
|
|
|
|
/*
|
|
* Request arguments for dlinfo().
|
|
*/
|
|
#define RTLD_DI_LINKMAP 2 /* Obtain link map. */
|
|
#define RTLD_DI_SERINFO 4 /* Obtain search path info. */
|
|
#define RTLD_DI_SERINFOSIZE 5 /* ... query for required space. */
|
|
#define RTLD_DI_ORIGIN 6 /* Obtain object origin */
|
|
#define RTLD_DI_MAX RTLD_DI_ORIGIN
|
|
|
|
/*
|
|
* Special handle arguments for dlsym()/dlinfo().
|
|
*/
|
|
#define RTLD_NEXT ((void *) -1) /* Search subsequent objects. */
|
|
#define RTLD_DEFAULT ((void *) -2) /* Use default search algorithm. */
|
|
#define RTLD_SELF ((void *) -3) /* Search the caller itself. */
|
|
|
|
#if __BSD_VISIBLE
|
|
|
|
#ifndef _SIZE_T_DECLARED
|
|
typedef __size_t size_t;
|
|
#define _SIZE_T_DECLARED
|
|
#endif
|
|
|
|
/*
|
|
* Structure filled in by dladdr().
|
|
*/
|
|
typedef struct dl_info {
|
|
const char *dli_fname; /* Pathname of shared object. */
|
|
void *dli_fbase; /* Base address of shared object. */
|
|
const char *dli_sname; /* Name of nearest symbol. */
|
|
void *dli_saddr; /* Address of nearest symbol. */
|
|
} Dl_info;
|
|
|
|
/*-
|
|
* The actual type declared by this typedef is immaterial, provided that
|
|
* it is a function pointer. Its purpose is to provide a return type for
|
|
* dlfunc() which can be cast to a function pointer type without depending
|
|
* on behavior undefined by the C standard, which might trigger a compiler
|
|
* diagnostic. We intentionally declare a unique type signature to force
|
|
* a diagnostic should the application not cast the return value of dlfunc()
|
|
* appropriately.
|
|
*/
|
|
struct __dlfunc_arg {
|
|
int __dlfunc_dummy;
|
|
};
|
|
|
|
typedef void (*dlfunc_t)(struct __dlfunc_arg);
|
|
|
|
/*
|
|
* Structures, returned by the RTLD_DI_SERINFO dlinfo() request.
|
|
*/
|
|
typedef struct dl_serpath {
|
|
char * dls_name; /* single search path entry */
|
|
unsigned int dls_flags; /* path information */
|
|
} Dl_serpath;
|
|
|
|
typedef struct dl_serinfo {
|
|
size_t dls_size; /* total buffer size */
|
|
unsigned int dls_cnt; /* number of path entries */
|
|
Dl_serpath dls_serpath[1]; /* there may be more than one */
|
|
} Dl_serinfo;
|
|
|
|
#endif /* __BSD_VISIBLE */
|
|
|
|
__BEGIN_DECLS
|
|
/* XSI functions first. */
|
|
int dlclose(void *);
|
|
char *dlerror(void);
|
|
void *dlopen(const char *, int);
|
|
void *dlsym(void * __restrict, const char * __restrict);
|
|
|
|
#if __BSD_VISIBLE
|
|
void *fdlopen(int, int);
|
|
int dladdr(const void * __restrict, Dl_info * __restrict);
|
|
dlfunc_t dlfunc(void * __restrict, const char * __restrict);
|
|
int dlinfo(void * __restrict, int, void * __restrict);
|
|
void dllockinit(void *_context,
|
|
void *(*_lock_create)(void *_context),
|
|
void (*_rlock_acquire)(void *_lock),
|
|
void (*_wlock_acquire)(void *_lock),
|
|
void (*_lock_release)(void *_lock),
|
|
void (*_lock_destroy)(void *_lock),
|
|
void (*_context_destroy)(void *_context));
|
|
void *dlvsym(void * __restrict, const char * __restrict,
|
|
const char * __restrict);
|
|
#endif /* __BSD_VISIBLE */
|
|
__END_DECLS
|
|
|
|
#endif /* !_DLFCN_H_ */
|