1 #ifndef _DLFCN_H 2 #include <dl/dlfcn.h> 3 4 #define internal_function 5 6 /* Internally used flag. */ 7 #define __RTLD_DLOPEN 0x80000000 8 #define __RTLD_SPROF 0x40000000 9 10 /* Now define the internal interfaces. */ 11 extern void *__dlvsym (void *__handle, __const char *__name, 12 __const char *__version); 13 14 extern void *__libc_dlopen (__const char *__name); 15 extern void *__libc_dlsym (void *__map, __const char *__name); 16 extern int __libc_dlclose (void *__map); 17 18 /* Locate shared object containing the given address. */ 19 extern int _dl_addr (const void *address, Dl_info *info) 20 internal_function; 21 22 /* Open the shared object NAME, relocate it, and run its initializer if it 23 hasn't already been run. MODE is as for `dlopen' (see <dlfcn.h>). If 24 the object is already opened, returns its existing map. */ 25 extern void *_dl_open (const char *name, int mode, const void *caller) 26 internal_function; 27 28 /* Close an object previously opened by _dl_open. */ 29 extern void _dl_close (void *map) 30 internal_function; 31 32 /* Look up NAME in shared object HANDLE (which may be RTLD_DEFAULT or 33 RTLD_NEXT). WHO is the calling function, for RTLD_NEXT. Returns 34 the symbol value, which may be NULL. */ 35 extern void *_dl_sym (void *handle, const char *name, void *who) 36 internal_function; 37 38 /* Look up version VERSION of symbol NAME in shared object HANDLE 39 (which may be RTLD_DEFAULT or RTLD_NEXT). WHO is the calling 40 function, for RTLD_NEXT. Returns the symbol value, which may be 41 NULL. */ 42 extern void *_dl_vsym (void *handle, const char *name, const char *version, 43 void *who) 44 internal_function; 45 46 /* Call OPERATE, catching errors from `dl_signal_error'. If there is no 47 error, *ERRSTRING is set to null. If there is an error, *ERRSTRING is 48 set to a string constructed from the strings passed to _dl_signal_error, 49 and the error code passed is the return value and *OBJNAME is set to 50 the object name which experienced the problems. ERRSTRING if nonzero 51 points to a malloc'ed string which the caller has to free after use. 52 ARGS is passed as argument to OPERATE. */ 53 extern int _dl_catch_error (const char **objname, const char **errstring, 54 void (*operate) (void *), 55 void *args) 56 internal_function; 57 58 /* Helper function for <dlfcn.h> functions. Runs the OPERATE function via 59 _dl_catch_error. Returns zero for success, nonzero for failure; and 60 arranges for `dlerror' to return the error details. 61 ARGS is passed as argument to OPERATE. */ 62 extern int _dlerror_run (void (*operate) (void *), void *args) 63 internal_function; 64 65 #endif 66