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#ifndef _DLFCN_H
#include <dlfcn/dlfcn.h>
#include <link.h> /* For ElfW. */
/* Internally used flag. */
#define __RTLD_DLOPEN 0x80000000
#define __RTLD_SPROF 0x40000000
#define __RTLD_OPENEXEC 0x20000000
#define __RTLD_CALLMAP 0x10000000
#define __LM_ID_CALLER -2
/* Now define the internal interfaces. */
#define __libc_dlopen(name) \
__libc_dlopen_mode (name, RTLD_LAZY | __RTLD_DLOPEN)
extern void *__libc_dlopen_mode (__const char *__name, int __mode);
extern void *__libc_dlsym (void *__map, __const char *__name);
extern int __libc_dlclose (void *__map);
libc_hidden_proto (__libc_dlopen_mode)
libc_hidden_proto (__libc_dlsym)
libc_hidden_proto (__libc_dlclose)
/* Locate shared object containing the given address. */
#ifdef ElfW
extern int _dl_addr (const void *address, Dl_info *info,
struct link_map **mapp, const ElfW(Sym) **symbolp)
internal_function;
libc_hidden_proto (_dl_addr)
#endif
/* Open the shared object NAME, relocate it, and run its initializer if it
hasn't already been run. MODE is as for `dlopen' (see <dlfcn.h>). If
the object is already opened, returns its existing map. */
extern void *_dl_open (const char *name, int mode, const void *caller,
Lmid_t nsid)
internal_function;
libc_hidden_proto (_dl_open)
/* Close an object previously opened by _dl_open. */
extern void _dl_close (void *map)
internal_function;
libc_hidden_proto (_dl_close)
/* Look up NAME in shared object HANDLE (which may be RTLD_DEFAULT or
RTLD_NEXT). WHO is the calling function, for RTLD_NEXT. Returns
the symbol value, which may be NULL. */
extern void *_dl_sym (void *handle, const char *name, void *who)
internal_function;
/* Look up version VERSION of symbol NAME in shared object HANDLE
(which may be RTLD_DEFAULT or RTLD_NEXT). WHO is the calling
function, for RTLD_NEXT. Returns the symbol value, which may be
NULL. */
extern void *_dl_vsym (void *handle, const char *name, const char *version,
void *who)
internal_function;
/* Call OPERATE, catching errors from `dl_signal_error'. If there is no
error, *ERRSTRING is set to null. If there is an error, *ERRSTRING is
set to a string constructed from the strings passed to _dl_signal_error,
and the error code passed is the return value and *OBJNAME is set to
the object name which experienced the problems. ERRSTRING if nonzero
points to a malloc'ed string which the caller has to free after use.
ARGS is passed as argument to OPERATE. */
extern int _dl_catch_error (const char **objname, const char **errstring,
void (*operate) (void *),
void *args)
internal_function;
/* Helper function for <dlfcn.h> functions. Runs the OPERATE function via
_dl_catch_error. Returns zero for success, nonzero for failure; and
arranges for `dlerror' to return the error details.
ARGS is passed as argument to OPERATE. */
extern int _dlerror_run (void (*operate) (void *), void *args)
internal_function;
#ifdef SHARED
# define DL_CALLER_DECL /* Nothing */
# define DL_CALLER RETURN_ADDRESS (0)
#else
# define DL_CALLER_DECL , void *dl_caller
# define DL_CALLER dl_caller
#endif
struct dlfcn_hook
{
void *(*dlopen) (const char *file, int mode, void *dl_caller);
int (*dlclose) (void *handle);
void *(*dlsym) (void *handle, const char *name, void *dl_caller);
void *(*dlvsym) (void *handle, const char *name, const char *version,
void *dl_caller);
char *(*dlerror) (void);
int (*dladdr) (const void *address, Dl_info *info);
int (*dladdr1) (const void *address, Dl_info *info,
void **extra_info, int flags);
int (*dlinfo) (void *handle, int request, void *arg, void *dl_caller);
void *(*dlmopen) (Lmid_t nsid, const char *file, int mode, void *dl_caller);
void *pad[4];
};
extern struct dlfcn_hook *_dlfcn_hook;
libdl_hidden_proto (_dlfcn_hook)
extern void *__dlopen (const char *file, int mode DL_CALLER_DECL)
attribute_hidden;
extern void *__dlmopen (Lmid_t nsid, const char *file, int mode DL_CALLER_DECL)
attribute_hidden;
extern int __dlclose (void *handle)
attribute_hidden;
extern void *__dlsym (void *handle, const char *name DL_CALLER_DECL)
attribute_hidden;
extern void *__dlvsym (void *handle, const char *name, const char *version
DL_CALLER_DECL)
attribute_hidden;
extern char *__dlerror (void)
attribute_hidden;
extern int __dladdr (const void *address, Dl_info *info)
attribute_hidden;
extern int __dladdr1 (const void *address, Dl_info *info,
void **extra_info, int flags)
attribute_hidden;
extern int __dlinfo (void *handle, int request, void *arg DL_CALLER_DECL)
attribute_hidden;
#ifndef SHARED
struct link_map;
extern void * __libc_dlsym_private (struct link_map *map, const char *name)
attribute_hidden;
extern void __libc_register_dl_open_hook (struct link_map *map)
attribute_hidden;
extern void __libc_register_dlfcn_hook (struct link_map *map)
attribute_hidden;
#endif
#endif
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