d_tag != DT_NULL; ++dyn)
if (dyn->d_tag == DT_DEBUG)
r_debug = (struct r_debug *) dyn->d_un.d_ptr;
*/
extern ElfW(Dyn) _DYNAMIC[];
/* Structure describing a loaded shared object. The `l_next' and `l_prev'
members form a chain of all the shared objects loaded at startup.
These data structures exist in space used by the run-time dynamic linker;
modifying them may have disastrous results. */
struct link_map
{
/* These first few members are part of the protocol with the debugger.
This is the same format used in SVR4. */
ElfW(Addr) l_addr; /* Base address shared object is loaded at. */
char *l_name; /* Absolute file name object was found in. */
ElfW(Dyn) *l_ld; /* Dynamic section of the shared object. */
struct link_map *l_next, *l_prev; /* Chain of loaded objects. */
};
#ifdef __USE_GNU
/* Version numbers for la_version handshake interface. */
#define LAV_CURRENT 1
/* Activity types signaled through la_activity. */
enum
{
LA_ACT_CONSISTENT, /* Link map consistent again. */
LA_ACT_ADD, /* New object will be added. */
LA_ACT_DELETE /* Objects will be removed. */
};
/* Values representing origin of name for dynamic loading. */
enum
{
LA_SER_ORIG = 0x01, /* Original name. */
LA_SER_LIBPATH = 0x02, /* Directory from LD_LIBRARY_PATH. */
LA_SER_RUNPATH = 0x04, /* Directory from RPATH/RUNPATH. */
LA_SER_CONFIG = 0x08, /* Found through ldconfig. */
LA_SER_DEFAULT = 0x40, /* Default directory. */
LA_SER_SECURE = 0x80 /* Unused. */
};
/* Values for la_objopen return value. */
enum
{
LA_FLG_BINDTO = 0x01, /* Audit symbols bound to this object. */
LA_FLG_BINDFROM = 0x02 /* Audit symbols bound from this object. */
};
/* Values for la_symbind flags parameter. */
enum
{
LA_SYMB_NOPLTENTER = 0x01, /* la_pltenter will not be called. */
LA_SYMB_NOPLTEXIT = 0x02, /* la_pltexit will not be called. */
LA_SYMB_STRUCTCALL = 0x04, /* Return value is a structure. */
LA_SYMB_DLSYM = 0x08, /* Binding due to dlsym call. */
LA_SYMB_ALTVALUE = 0x10 /* Value has been changed by a previous
la_symbind call. */
};
struct dl_phdr_info
{
ElfW(Addr) dlpi_addr;
const char *dlpi_name;
const ElfW(Phdr) *dlpi_phdr;
ElfW(Half) dlpi_phnum;
/* Note: Following members were introduced after the first
version of this structure was available. Check the SIZE
argument passed to the dl_iterate_phdr callback to determine
whether or not each later member is available. */
/* Incremented when a new object may have been added. */
unsigned long long int dlpi_adds;
/* Incremented when an object may have been removed. */
unsigned long long int dlpi_subs;
/* If there is a PT_TLS segment, its module ID as used in
TLS relocations, else zero. */
size_t dlpi_tls_modid;
/* The address of the calling thread's instance of this module's
PT_TLS segment, if it has one and it has been allocated
in the calling thread, otherwise a null pointer. */
void *dlpi_tls_data;
};
__BEGIN_DECLS
extern int dl_iterate_phdr (int (*__callback) (struct dl_phdr_info *,
size_t, void *),
void *__data);
/* Prototypes for the ld.so auditing interfaces. These are not
defined anywhere in ld.so but instead have to be provided by the
auditing DSO. */
extern unsigned int la_version (unsigned int __version);
extern void la_activity (uintptr_t *__cookie, unsigned int __flag);
extern char *la_objsearch (const char *__name, uintptr_t *__cookie,
unsigned int __flag);
extern unsigned int la_objopen (struct link_map *__map, Lmid_t __lmid,
uintptr_t *__cookie);
extern void la_preinit (uintptr_t *__cookie);
extern uintptr_t la_symbind32 (Elf32_Sym *__sym, unsigned int __ndx,
uintptr_t *__refcook, uintptr_t *__defcook,
unsigned int *__flags, const char *__symname);
extern uintptr_t la_symbind64 (Elf64_Sym *__sym, unsigned int __ndx,
uintptr_t *__refcook, uintptr_t *__defcook,
unsigned int *__flags, const char *__symname);
extern unsigned int la_objclose (uintptr_t *__cookie);
__END_DECLS
#endif
#endif /* link.h */