123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140 |
- /*-
- * 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_ */
|