diff options
Diffstat (limited to 'REORG.TODO/include/dlfcn.h')
| -rw-r--r-- | REORG.TODO/include/dlfcn.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/REORG.TODO/include/dlfcn.h b/REORG.TODO/include/dlfcn.h new file mode 100644 index 0000000000..2524292ebc --- /dev/null +++ b/REORG.TODO/include/dlfcn.h @@ -0,0 +1,140 @@ +#ifndef _DLFCN_H +#include <dlfcn/dlfcn.h> +#ifndef _ISOMAC +#include <link.h> /* For ElfW. */ +#include <stdbool.h> + +/* Internally used flag. */ +#define __RTLD_DLOPEN 0x80000000 +#define __RTLD_SPROF 0x40000000 +#define __RTLD_OPENEXEC 0x20000000 +#define __RTLD_CALLMAP 0x10000000 +#define __RTLD_AUDIT 0x08000000 +#define __RTLD_SECURE 0x04000000 /* Apply additional security checks. */ +#define __RTLD_NOIFUNC 0x02000000 /* Suppress calling ifunc functions. */ + +#define __LM_ID_CALLER -2 + +#ifdef SHARED +/* Locally stored program arguments. */ +extern int __dlfcn_argc attribute_hidden; +extern char **__dlfcn_argv attribute_hidden; +#else +/* These variables are defined and initialized in the startup code. */ +extern int __libc_argc attribute_hidden; +extern char **__libc_argv attribute_hidden; + +# define __dlfcn_argc __libc_argc +# define __dlfcn_argv __libc_argv +#endif + + +/* 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 + +struct link_map; + +/* Close an object previously opened by _dl_open. */ +extern void _dl_close (void *map) attribute_hidden; +/* Same as above, but without locking and safety checks for user + provided map arguments. */ +extern void _dl_close_worker (struct link_map *map, bool force) + attribute_hidden; + +/* 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; + +/* 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 + +#endif |