uClibc: backport a fix for dlsym(RTLD_NEXT, ...) use

Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 34142

diff --git a/toolchain/uClibc/patches-0.9.33.2/011-dlsym_rtld_next_fix.patch b/toolchain/uClibc/patches-0.9.33.2/011-dlsym_rtld_next_fix.patch
new file mode 100644 (file)
index 0000000..5c90ca5
--- /dev/null
+++ b/toolchain/uClibc/patches-0.9.33.2/011-dlsym_rtld_next_fix.patch
@@ -0,0 +1,26 @@
+diff -urN uClibc-0.9.33.2/ldso/libdl/libdl.c uClibc-0.9.33.2.new/ldso/libdl/libdl.c
+--- uClibc-0.9.33.2/ldso/libdl/libdl.c 2012-05-15 09:20:09.000000000 +0200
++++ uClibc-0.9.33.2.new/ldso/libdl/libdl.c     2012-11-10 18:34:56.673501060 +0100
+@@ -671,7 +671,7 @@
+ {
+       struct elf_resolve *tpnt, *tfrom;
+       struct dyn_elf *handle;
+-      ElfW(Addr) from;
++      ElfW(Addr) from = 0;
+       struct dyn_elf *rpnt;
+       void *ret;
+       struct symbol_ref sym_ref = { NULL, NULL };
+@@ -729,7 +729,12 @@
+       tpnt = NULL;
+       if (handle == _dl_symbol_tables)
+               tpnt = handle->dyn; /* Only search RTLD_GLOBAL objs if global object */
+-      ret = _dl_find_hash(name2, &handle->dyn->symbol_scope, tpnt, ELF_RTYPE_CLASS_DLSYM, &sym_ref);
++      do {
++              ret = _dl_find_hash(name2, &handle->dyn->symbol_scope, tpnt, ELF_RTYPE_CLASS_DLSYM, &sym_ref);
++              if (ret != NULL)
++                      break;
++              handle = handle->next;
++      } while (from && handle);
+ 
+ #if defined(USE_TLS) && USE_TLS && defined SHARED
+       if (sym_ref.sym && (ELF_ST_TYPE(sym_ref.sym->st_info) == STT_TLS) && (sym_ref.tpnt)) {