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Diffstat (limited to 'sysdeps/generic/ldsodefs.h')
-rw-r--r--sysdeps/generic/ldsodefs.h114
1 files changed, 80 insertions, 34 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index ec68e1a..4a181f4 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -52,23 +52,15 @@ __BEGIN_DECLS
most architectures the entry is already relocated - but for some not
and we need to relocate at access time. */
#ifdef DL_RO_DYN_SECTION
-# define D_PTR(map,i) (map->i->d_un.d_ptr + map->l_addr)
+# define D_PTR(map, i) ((map)->i->d_un.d_ptr + (map)->l_addr)
#else
-# define D_PTR(map,i) map->i->d_un.d_ptr
+# define D_PTR(map, i) (map)->i->d_un.d_ptr
#endif
-/* On some platforms more information than just the address of the symbol
- is needed from the lookup functions. In this case we return the whole
- link map. */
-#ifdef DL_LOOKUP_RETURNS_MAP
+/* Result of the lookup functions and how to retrieve the base address. */
typedef struct link_map *lookup_t;
# define LOOKUP_VALUE(map) map
-# define LOOKUP_VALUE_ADDRESS(map) (map ? map->l_addr : 0)
-#else
-typedef ElfW(Addr) lookup_t;
-# define LOOKUP_VALUE(map) map->l_addr
-# define LOOKUP_VALUE_ADDRESS(address) address
-#endif
+# define LOOKUP_VALUE_ADDRESS(map) ((map) ? (map)->l_addr : 0)
/* on some architectures a pointer to a function is not just a pointer
to the actual code of the function but rather an architecture
@@ -182,6 +174,55 @@ enum allowmask
};
+/* Type for list of auditing interfaces. */
+struct La_i86_regs;
+struct La_i86_retval;
+struct La_x86_64_regs;
+struct La_x86_64_retval;
+
+
+struct audit_ifaces
+{
+ void (*activity) (uintptr_t *, unsigned int);
+ char *(*objsearch) (const char *, uintptr_t *, unsigned int);
+ unsigned int (*objopen) (struct link_map *, Lmid_t, uintptr_t *);
+ void (*preinit) (uintptr_t *);
+ union
+ {
+ uintptr_t (*symbind32) (Elf32_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *, unsigned int *, const char *);
+ uintptr_t (*symbind64) (Elf64_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *, unsigned int *, const char *);
+ };
+ union
+ {
+ uintptr_t (*i86_gnu_pltenter) (Elf32_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *, const struct La_i86_regs *,
+ unsigned int *, const char *name,
+ long int *framesizep);
+ uintptr_t (*x86_64_gnu_pltenter) (Elf64_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *,
+ const struct La_x86_64_regs *,
+ unsigned int *, const char *name,
+ long int *framesizep);
+ };
+ union
+ {
+ unsigned int (*i86_gnu_pltexit) (Elf32_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *, const struct La_i86_regs *,
+ struct La_i86_retval *, const char *);
+ unsigned int (*x86_64_gnu_pltexit) (Elf64_Sym *, unsigned int, uintptr_t *,
+ uintptr_t *,
+ const struct La_x86_64_regs *,
+ struct La_x86_64_retval *,
+ const char *);
+ };
+ unsigned int (*objclose) (uintptr_t *);
+
+ struct audit_ifaces *next;
+};
+
+
/* Test whether given NAME matches any of the names of the given object. */
extern int _dl_name_match_p (const char *__name, struct link_map *__map)
internal_function;
@@ -224,7 +265,7 @@ struct rtld_global
#endif
EXTERN struct link_namespaces
{
- /* And a pointer to the map for the main map. */
+ /* A pointer to the map for the main map. */
struct link_map *_ns_loaded;
/* Number of object in the _dl_loaded list. */
unsigned int _ns_nloaded;
@@ -277,8 +318,12 @@ struct rtld_global
EXTERN void **(*_dl_error_catch_tsd) (void) __attribute__ ((const));
#endif
- /* Structure describing the dynamic linker itself. */
+ /* Structure describing the dynamic linker itself. We need to
+ reserve memory for the data the audit libraries need. */
EXTERN struct link_map _dl_rtld_map;
+#ifdef SHARED
+ struct auditstate audit_data[DL_NNS];
+#endif
#if defined SHARED && defined _LIBC_REENTRANT \
&& defined __rtld_lock_default_lock_recursive
@@ -311,6 +356,7 @@ struct rtld_global
struct dtv_slotinfo
{
size_t gen;
+ bool is_static;
struct link_map *map;
} slotinfo[0];
} *_dl_tls_dtv_slotinfo_list;
@@ -483,32 +529,12 @@ struct rtld_global_ro
call the function instead of going through the PLT. The result
is that we can avoid exporting the functions and we do not jump
PLT relocations in libc.so. */
- const char *(*_dl_get_origin) (void);
- size_t (*_dl_dst_count) (const char *, int);
- char *(*_dl_dst_substitute) (struct link_map *, const char *, char *, int);
- struct link_map *(internal_function *_dl_map_object) (struct link_map *,
- const char *, int,
- int, int, int, Lmid_t);
- void (internal_function *_dl_map_object_deps) (struct link_map *,
- struct link_map **,
- unsigned int, int, int);
- void (*_dl_relocate_object) (struct link_map *, struct r_scope_elem *[],
- int, int);
- int (internal_function *_dl_check_map_versions) (struct link_map *, int,
- int);
- void (internal_function *_dl_init) (struct link_map *, int, char **,
- char **);
- void (*_dl_debug_state) (void);
-#ifndef MAP_COPY
- void (*_dl_unload_cache) (void);
-#endif
void (*_dl_debug_printf) (const char *, ...)
__attribute__ ((__format__ (__printf__, 1, 2)));
int (internal_function *_dl_catch_error) (const char **, const char **,
void (*) (void *), void *);
void (internal_function *_dl_signal_error) (int, const char *, const char *,
const char *);
- void (internal_function *_dl_start_profile) (void);
void (*_dl_mcount) (ElfW(Addr) frompc, ElfW(Addr) selfpc);
lookup_t (internal_function *_dl_lookup_symbol_x) (const char *,
struct link_map *,
@@ -518,7 +544,13 @@ struct rtld_global_ro
int, int,
struct link_map *);
int (*_dl_check_caller) (const void *, enum allowmask);
+ void *(*_dl_open) (const char *file, int mode, const void *caller_dlopen,
+ Lmid_t nsid, int argc, char *argv[], char *env[]);
+ void (*_dl_close) (void *map);
+ /* List of auditing interfaces. */
+ struct audit_ifaces *_dl_audit;
+ unsigned int _dl_naudit;
};
# define __rtld_global_attribute__
# ifdef IS_IN_rtld
@@ -911,6 +943,20 @@ extern char *_dl_dst_substitute (struct link_map *l, const char *name,
extern int _dl_check_caller (const void *caller, enum allowmask mask)
attribute_hidden;
+/* Open the shared object NAME, relocate it, and run its initializer if it
+ hasn't already been run. MODE is as for `dlopen' (see <dlfcn.h>). If
+ the object is already opened, returns its existing map. */
+extern void *_dl_open (const char *name, int mode, const void *caller,
+ Lmid_t nsid, int argc, char *argv[], char *env[])
+ attribute_hidden;
+
+/* Add module to slot information data. */
+extern void _dl_add_to_slotinfo (struct link_map *l) attribute_hidden;
+
+/* Update slot information data for at least the generation of the
+ module with the given index. */
+extern struct link_map *_dl_update_slotinfo (unsigned long int req_modid);
+
__END_DECLS
#endif /* ldsodefs.h */