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4c1956 |
commit cda4f265c65fb6c4ce38ca1cf0a7e527c5e77cd5
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
Date: Tue Jul 20 15:58:35 2021 -0300
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
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4c1956 |
elf: Add _dl_audit_symbind_alt and _dl_audit_symbind
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
It consolidates the code required to call la_symbind{32,64} audit
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
callback.
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
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4c1956 |
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
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4c1956 |
diff --git a/elf/Versions b/elf/Versions
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
index be88c48e6d45a937..c5d4342cf1f5124c 100644
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
--- a/elf/Versions
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+++ b/elf/Versions
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
@@ -59,6 +59,7 @@ ld {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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_dl_argv; _dl_find_dso_for_object; _dl_get_tls_static_info;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
_dl_deallocate_tls; _dl_make_stack_executable;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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_dl_rtld_di_serinfo; _dl_starting_up; _dl_fatal_printf;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ _dl_audit_symbind_alt;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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_rtld_global; _rtld_global_ro;
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4c1956 |
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4c1956 |
# Only here for gdb while a better method is developed.
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
diff --git a/elf/dl-audit.c b/elf/dl-audit.c
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
index cb1c3de93cba447b..a21530f30bc5524b 100644
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
--- a/elf/dl-audit.c
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4c1956 |
+++ b/elf/dl-audit.c
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4c1956 |
@@ -16,6 +16,7 @@
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
License along with the GNU C Library; if not, see
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
<https://www.gnu.org/licenses/>. */
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4c1956 |
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4c1956 |
+#include <assert.h>
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4c1956 |
#include <ldsodefs.h>
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4c1956 |
void
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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@@ -106,3 +107,124 @@ _dl_audit_objclose (struct link_map *l)
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afct = afct->next;
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}
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4c1956 |
}
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+
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+void
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+_dl_audit_symbind_alt (struct link_map *l, const ElfW(Sym) *ref, void **value,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+ lookup_t result)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+{
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+ if ((l->l_audit_any_plt | result->l_audit_any_plt) == 0)
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+ return;
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+
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+ const char *strtab = (const char *) D_PTR (result, l_info[DT_STRTAB]);
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+ /* Compute index of the symbol entry in the symbol table of the DSO with
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+ the definition. */
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+ unsigned int ndx = (ref - (ElfW(Sym) *) D_PTR (result, l_info[DT_SYMTAB]));
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+
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+ unsigned int altvalue = 0;
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+ /* Synthesize a symbol record where the st_value field is the result. */
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+ ElfW(Sym) sym = *ref;
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+ sym.st_value = (ElfW(Addr)) *value;
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+
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+ struct audit_ifaces *afct = GLRO(dl_audit);
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+ for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
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+ {
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+ struct auditstate *match_audit = link_map_audit_state (l, cnt);
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+ struct auditstate *result_audit = link_map_audit_state (result, cnt);
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+ if (afct->symbind != NULL
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+ && ((match_audit->bindflags & LA_FLG_BINDFROM) != 0
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+ || ((result_audit->bindflags & LA_FLG_BINDTO)
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+ != 0)))
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+ {
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+ unsigned int flags = altvalue | LA_SYMB_DLSYM;
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+ uintptr_t new_value = afct->symbind (&sym, ndx,
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+ &match_audit->cookie,
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+ &result_audit->cookie,
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+ &flags, strtab + ref->st_name);
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+ if (new_value != (uintptr_t) sym.st_value)
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+ {
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4c1956 |
+ altvalue = LA_SYMB_ALTVALUE;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+ sym.st_value = new_value;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
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+ }
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+
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4c1956 |
+ afct = afct->next;
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+ }
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+
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ *value = (void *) sym.st_value;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+}
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+rtld_hidden_def (_dl_audit_symbind_alt)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+void
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+_dl_audit_symbind (struct link_map *l, struct reloc_result *reloc_result,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ const ElfW(Sym) *defsym, DL_FIXUP_VALUE_TYPE *value,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ lookup_t result)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+{
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->bound = result;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ /* Compute index of the symbol entry in the symbol table of the DSO with the
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ definition. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->boundndx = (defsym - (ElfW(Sym) *) D_PTR (result,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ l_info[DT_SYMTAB]));
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ if ((l->l_audit_any_plt | result->l_audit_any_plt) == 0)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ {
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ /* Set all bits since this symbol binding is not interesting. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->enterexit = (1u << DL_NNS) - 1;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ return;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ /* Synthesize a symbol record where the st_value field is the result. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ ElfW(Sym) sym = *defsym;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ sym.st_value = DL_FIXUP_VALUE_ADDR (*value);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ /* Keep track whether there is any interest in tracing the call in the lower
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ two bits. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ assert (DL_NNS * 2 <= sizeof (reloc_result->flags) * 8);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ assert ((LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT) == 3);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->enterexit = LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ const char *strtab2 = (const void *) D_PTR (result, l_info[DT_STRTAB]);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ unsigned int flags = 0;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ struct audit_ifaces *afct = GLRO(dl_audit);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ {
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ /* XXX Check whether both DSOs must request action or only one */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ struct auditstate *l_state = link_map_audit_state (l, cnt);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ struct auditstate *result_state = link_map_audit_state (result, cnt);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ if ((l_state->bindflags & LA_FLG_BINDFROM) != 0
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ && (result_state->bindflags & LA_FLG_BINDTO) != 0)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ {
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ if (afct->symbind != NULL)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ {
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ uintptr_t new_value = afct->symbind (&sym,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->boundndx,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ &l_state->cookie,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ &result_state->cookie,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ &flags,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ strtab2 + defsym->st_name);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ if (new_value != (uintptr_t) sym.st_value)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ {
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ flags |= LA_SYMB_ALTVALUE;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ sym.st_value = new_value;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ /* Remember the results for every audit library and store a summary
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ in the first two bits. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->enterexit &= flags & (LA_SYMB_NOPLTENTER
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ | LA_SYMB_NOPLTEXIT);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->enterexit |= ((flags & (LA_SYMB_NOPLTENTER
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ | LA_SYMB_NOPLTEXIT))
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ << ((cnt + 1) * 2));
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ else
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ /* If the bind flags say this auditor is not interested, set the bits
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ manually. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->enterexit |= ((LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ << ((cnt + 1) * 2));
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ afct = afct->next;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ reloc_result->flags = flags;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ *value = DL_FIXUP_ADDR_VALUE (sym.st_value);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+}
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
index 4ccd7c30678fafad..d4840a7c17441126 100644
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
--- a/elf/dl-runtime.c
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+++ b/elf/dl-runtime.c
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
@@ -296,84 +296,7 @@ _dl_profile_fixup (
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
auditing libraries the possibility to change the value and
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
tell us whether further auditing is wanted. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
if (defsym != NULL && GLRO(dl_naudit) > 0)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->bound = result;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Compute index of the symbol entry in the symbol table of
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- the DSO with the definition. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->boundndx = (defsym
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- - (ElfW(Sym) *) D_PTR (result,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- l_info[DT_SYMTAB]));
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Determine whether any of the two participating DSOs is
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- interested in auditing. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- if ((l->l_audit_any_plt | result->l_audit_any_plt) != 0)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- unsigned int flags = 0;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- struct audit_ifaces *afct = GLRO(dl_audit);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Synthesize a symbol record where the st_value field is
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- the result. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- ElfW(Sym) sym = *defsym;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- sym.st_value = DL_FIXUP_VALUE_ADDR (value);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Keep track whether there is any interest in tracing
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- the call in the lower two bits. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- assert (DL_NNS * 2 <= sizeof (reloc_result->flags) * 8);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- assert ((LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT) == 3);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->enterexit = LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- const char *strtab2 = (const void *) D_PTR (result,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- l_info[DT_STRTAB]);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* XXX Check whether both DSOs must request action or
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- only one */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- struct auditstate *l_state = link_map_audit_state (l, cnt);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- struct auditstate *result_state
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- = link_map_audit_state (result, cnt);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- if ((l_state->bindflags & LA_FLG_BINDFROM) != 0
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- && (result_state->bindflags & LA_FLG_BINDTO) != 0)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- if (afct->symbind != NULL)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- uintptr_t new_value
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- = afct->symbind (&sym, reloc_result->boundndx,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- &l_state->cookie,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- &result_state->cookie,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- &flags,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- strtab2 + defsym->st_name);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- if (new_value != (uintptr_t) sym.st_value)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- flags |= LA_SYMB_ALTVALUE;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- sym.st_value = new_value;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Remember the results for every audit library and
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- store a summary in the first two bits. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->enterexit
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- &= flags & (LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->enterexit
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- |= ((flags & (LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT))
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- << ((cnt + 1) * 2));
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- else
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* If the bind flags say this auditor is not interested,
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- set the bits manually. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->enterexit
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- |= ((LA_SYMB_NOPLTENTER | LA_SYMB_NOPLTEXIT)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- << ((cnt + 1) * 2));
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- afct = afct->next;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->flags = flags;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- value = DL_FIXUP_ADDR_VALUE (sym.st_value);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- else
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Set all bits since this symbol binding is not interesting. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- reloc_result->enterexit = (1u << DL_NNS) - 1;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ _dl_audit_symbind (l, reloc_result, defsym, &value, result);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
#endif
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
/* Store the result for later runs. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
diff --git a/elf/dl-sym-post.h b/elf/dl-sym-post.h
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
index 4c4f574633497789..f33934c92047f293 100644
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
--- a/elf/dl-sym-post.h
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+++ b/elf/dl-sym-post.h
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
@@ -52,54 +52,9 @@ _dl_sym_post (lookup_t result, const ElfW(Sym) *ref, void *value,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
tell us whether further auditing is wanted. */
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
if (__glibc_unlikely (GLRO(dl_naudit) > 0))
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
{
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- const char *strtab = (const char *) D_PTR (result,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- l_info[DT_STRTAB]);
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Compute index of the symbol entry in the symbol table of
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- the DSO with the definition. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- unsigned int ndx = (ref - (ElfW(Sym) *) D_PTR (result,
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- l_info[DT_SYMTAB]));
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
if (match == NULL)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
match = _dl_sym_find_caller_link_map (caller);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- if ((match->l_audit_any_plt | result->l_audit_any_plt) != 0)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- unsigned int altvalue = 0;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- struct audit_ifaces *afct = GLRO(dl_audit);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- /* Synthesize a symbol record where the st_value field is
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- the result. */
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- ElfW(Sym) sym = *ref;
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- sym.st_value = (ElfW(Addr)) value;
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt)
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- struct auditstate *match_audit
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- = link_map_audit_state (match, cnt);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- struct auditstate *result_audit
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- = link_map_audit_state (result, cnt);
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![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- if (afct->symbind != NULL
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- && ((match_audit->bindflags & LA_FLG_BINDFROM) != 0
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- || ((result_audit->bindflags & LA_FLG_BINDTO)
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- != 0)))
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- unsigned int flags = altvalue | LA_SYMB_DLSYM;
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- uintptr_t new_value
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- = afct->symbind (&sym, ndx,
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- &match_audit->cookie,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- &result_audit->cookie,
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- &flags, strtab + ref->st_name);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- if (new_value != (uintptr_t) sym.st_value)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- {
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- altvalue = LA_SYMB_ALTVALUE;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- sym.st_value = new_value;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- afct = afct->next;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
-
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- value = (void *) sym.st_value;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
- }
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ _dl_audit_symbind_alt (match, ref, &value, result);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
}
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
#endif
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
return value;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
index 3db25c5be1acf871..fa55c3bde10de52e 100644
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
--- a/sysdeps/generic/ldsodefs.h
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+++ b/sysdeps/generic/ldsodefs.h
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
@@ -1294,6 +1294,16 @@ void _dl_audit_objopen (struct link_map *l, Lmid_t nsid)
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
/* Call the la_objclose from the audit modules for the link_map L. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
void _dl_audit_objclose (struct link_map *l)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
attribute_hidden;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+
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|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+/* Call the la_symbind{32,64} from the audit modules for the link_map L. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+void _dl_audit_symbind (struct link_map *l, struct reloc_result *reloc_result,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ const ElfW(Sym) *defsym, DL_FIXUP_VALUE_TYPE *value,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ lookup_t result)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ attribute_hidden;
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+/* Same as _dl_audit_symbind, but also sets LA_SYMB_DLSYM flag. */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+void _dl_audit_symbind_alt (struct link_map *l, const ElfW(Sym) *ref,
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+ void **value, lookup_t result);
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
+rtld_hidden_proto (_dl_audit_symbind_alt)
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
#endif /* SHARED */
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
|
|
![](https://seccdn.libravatar.org/avatar/fcc0873d860f7e6944b3abea5b6b447609288dcd55d37b92d3e9e9b1a1e81f06?s=16&d=retro) |
4c1956 |
__END_DECLS
|