2 #include <dlfcn/dlfcn.h>
3 #include <link.h> /* For ElfW. */
5 /* Internally used flag. */
6 #define __RTLD_DLOPEN 0x80000000
7 #define __RTLD_SPROF 0x40000000
8 #define __RTLD_OPENEXEC 0x20000000
9 #define __RTLD_CALLMAP 0x10000000
11 /* Now define the internal interfaces. */
12 extern void *__dlvsym (void *__handle
, __const
char *__name
,
13 __const
char *__version
);
15 #define __libc_dlopen(name) __libc_dlopen_mode (name, RTLD_LAZY)
16 extern void *__libc_dlopen_mode (__const
char *__name
, int __mode
);
17 extern void *__libc_dlsym (void *__map
, __const
char *__name
);
18 extern int __libc_dlclose (void *__map
);
19 libc_hidden_proto (__libc_dlopen_mode
)
20 libc_hidden_proto (__libc_dlsym
)
21 libc_hidden_proto (__libc_dlclose
)
23 /* Locate shared object containing the given address. */
25 extern int _dl_addr (const void *address
, Dl_info
*info
,
26 struct link_map
**mapp
, const ElfW(Sym
) **symbolp
)
28 libc_hidden_proto (_dl_addr
)
31 /* Open the shared object NAME, relocate it, and run its initializer if it
32 hasn't already been run. MODE is as for `dlopen' (see <dlfcn.h>). If
33 the object is already opened, returns its existing map. */
34 extern void *_dl_open (const char *name
, int mode
, const void *caller
)
36 libc_hidden_proto (_dl_open
)
38 /* Close an object previously opened by _dl_open. */
39 extern void _dl_close (void *map
)
41 libc_hidden_proto (_dl_close
)
43 /* Look up NAME in shared object HANDLE (which may be RTLD_DEFAULT or
44 RTLD_NEXT). WHO is the calling function, for RTLD_NEXT. Returns
45 the symbol value, which may be NULL. */
46 extern void *_dl_sym (void *handle
, const char *name
, void *who
)
49 /* Look up version VERSION of symbol NAME in shared object HANDLE
50 (which may be RTLD_DEFAULT or RTLD_NEXT). WHO is the calling
51 function, for RTLD_NEXT. Returns the symbol value, which may be
53 extern void *_dl_vsym (void *handle
, const char *name
, const char *version
,
57 /* Call OPERATE, catching errors from `dl_signal_error'. If there is no
58 error, *ERRSTRING is set to null. If there is an error, *ERRSTRING is
59 set to a string constructed from the strings passed to _dl_signal_error,
60 and the error code passed is the return value and *OBJNAME is set to
61 the object name which experienced the problems. ERRSTRING if nonzero
62 points to a malloc'ed string which the caller has to free after use.
63 ARGS is passed as argument to OPERATE. */
64 extern int _dl_catch_error (const char **objname
, const char **errstring
,
65 void (*operate
) (void *),
69 /* Helper function for <dlfcn.h> functions. Runs the OPERATE function via
70 _dl_catch_error. Returns zero for success, nonzero for failure; and
71 arranges for `dlerror' to return the error details.
72 ARGS is passed as argument to OPERATE. */
73 extern int _dlerror_run (void (*operate
) (void *), void *args
)