mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
3012cfb0d2
These functions are invoked from other DSOs and should therefore use the standard calling convention.
140 lines
4.7 KiB
C
140 lines
4.7 KiB
C
#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);
|
|
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
|