headers/posix/dlfcn.h

   1 /*
   2  * Copyright 2003-2012 Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _DLFCN_H
   6 #define _DLFCN_H
   7
   8
   9 #include <sys/types.h>
  10
  11
  12 #define RTLD_LAZY       0       /* relocations are performed as needed */
  13 #define RTLD_NOW        1       /* the file gets relocated at load time */
  14 #define RTLD_LOCAL      0       /* symbols are not available for relocating any other object */
  15 #define RTLD_GLOBAL     2       /* all symbols are available */
  16
  17 /* not-yet-POSIX extensions (dlsym() handles) */
  18 #define RTLD_DEFAULT    ((void*)0)
  19         /* find the symbol in the global scope */
  20 #define RTLD_NEXT               ((void*)-1L)
  21         /* find the next definition of the symbol */
  22
  23 #ifdef __cplusplus
  24 extern "C" {
  25 #endif
  26
  27 /* This is a gnu extension for the dladdr function */
  28 typedef struct {
  29    const char *dli_fname;  /* Filename of defining object */
  30    void *dli_fbase;        /* Load address of that object */
  31    const char *dli_sname;  /* Name of nearest lower symbol */
  32    void *dli_saddr;        /* Exact value of nearest symbol */
  33 } Dl_info;
  34
  35 extern int      dlclose(void *image);
  36 extern char     *dlerror(void);
  37 extern void     *dlopen(const char *path, int mode);
  38 extern void *dlsym(void *image, const char *symbolName);
  39 extern int dladdr(const void *addr, Dl_info *info);
  40
  41 #ifdef __cplusplus
  42 }
  43 #endif
  44
  45 #endif /* _DLFCN_H */