include/dlfcn.h

   1 /*
   2  * Copyright (c) 2004-2008 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 /*
  25   Based on the dlcompat work done by:
  26                 Jorge Acereda  <jacereda@users.sourceforge.net> &
  27                 Peter O'Gorman <ogorman@users.sourceforge.net>
  28 */
  29
  30 #ifndef _DLFCN_H_
  31 #define _DLFCN_H_
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 #include <sys/cdefs.h>
  38
  39 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
  40 #include <stdbool.h>
  41 #include <Availability.h>
  42 /*
  43  * Structure filled in by dladdr().
  44  */
  45 typedef struct dl_info {
  46         const char      *dli_fname;     /* Pathname of shared object */
  47         void            *dli_fbase;     /* Base address of shared object */
  48         const char      *dli_sname;     /* Name of nearest symbol */
  49         void            *dli_saddr;     /* Address of nearest symbol */
  50 } Dl_info;
  51
  52 extern int dladdr(const void *, Dl_info *);
  53 #endif /* not POSIX */
  54
  55 extern int dlclose(void * __handle);
  56 extern char * dlerror(void);
  57 extern void * dlopen(const char * __path, int __mode);
  58 extern void * dlsym(void * __handle, const char * __symbol);
  59
  60 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
  61 extern bool dlopen_preflight(const char* __path) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
  62 #endif /* not POSIX */
  63
  64
  65 #define RTLD_LAZY       0x1
  66 #define RTLD_NOW        0x2
  67 #define RTLD_LOCAL      0x4
  68 #define RTLD_GLOBAL     0x8
  69
  70 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
  71 #define RTLD_NOLOAD     0x10
  72 #define RTLD_NODELETE   0x80
  73 #define RTLD_FIRST      0x100   /* Mac OS X 10.5 and later */
  74
  75 /*
  76  * Special handle arguments for dlsym().
  77  */
  78 #define RTLD_NEXT       ((void *) -1)   /* Search subsequent objects. */
  79 #define RTLD_DEFAULT    ((void *) -2)   /* Use default search algorithm. */
  80 #define RTLD_SELF       ((void *) -3)   /* Search this and subsequent objects (Mac OS X 10.5 and later) */
  81 #define RTLD_MAIN_ONLY  ((void *) -5)   /* Search main executable only (Mac OS X 10.5 and later) */
  82 #endif /* not POSIX */
  83
  84 #ifdef __cplusplus
  85 }
  86 #endif
  87
  88 #endif /* _DLFCN_H_ */