From 439d7e1b81b77e3930d81a6ea9bbadb3cff30fa4 Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Fri, 13 Sep 2013 18:48:18 +0200
Subject: erts: Fix loading of NIF library with unicode in path

---
 erts/emulator/beam/erl_nif.c | 20 +++++++-------------
 erts/emulator/beam/global.h  |  3 +--
 erts/emulator/beam/utils.c   | 22 ----------------------
 3 files changed, 8 insertions(+), 37 deletions(-)

(limited to 'erts/emulator/beam')

diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 673012a9af..ee480fb661 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1568,9 +1568,10 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
     void* init_func = NULL;
     ErlNifEntry* entry = NULL;
     ErlNifEnv env;
-    int len, i, err;
+    int i, err;
     Module* mod;
     Eterm mod_atom;
+    const Atom* mod_atomp;
     Eterm f_atom;
     BeamInstr* caller;
     ErtsSysDdllError errdesc = ERTS_SYS_DDLL_ERROR_INIT;
@@ -1578,21 +1579,13 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
     int veto;
     struct erl_module_nif* lib = NULL;
     int reload_warning = 0;
-    char tmp_buf[255];
 
-    len = list_length(BIF_ARG_1);
-    if (len < 0) {
+    lib_name = erts_convert_filename_to_native(BIF_ARG_1, NULL, 0,
+                                               ERTS_ALC_T_TMP, 1, 0, NULL);
+    if (!lib_name) {
 	BIF_ERROR(BIF_P, BADARG);
     }
 
-    lib_name = (char *) erts_alloc(ERTS_ALC_T_TMP, len + 1);
-
-    if (intlist_to_buf(BIF_ARG_1, lib_name, len) != len) {
-	erts_free(ERTS_ALC_T_TMP, lib_name);
-	BIF_ERROR(BIF_P, BADARG);
-    }
-    lib_name[len] = '\0';
-
     if (!erts_try_seize_code_write_permission(BIF_P)) {
 	erts_free(ERTS_ALC_T_TMP, lib_name);
 	ERTS_BIF_YIELD2(bif_export[BIF_load_nif_2],
@@ -1615,7 +1608,8 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
     mod=erts_get_module(mod_atom, erts_active_code_ix());
     ASSERT(mod != NULL);
 
-    init_func = erts_static_nif_get_nif_init(erts_basename(lib_name,tmp_buf));
+    mod_atomp = atom_tab(atom_val(mod_atom));
+    init_func = erts_static_nif_get_nif_init(mod_atomp->name, mod_atomp->len);
     if (init_func != NULL)
       handle = init_func;
 
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index e3a0487aeb..11e464b639 100755
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -849,7 +849,7 @@ void erts_lcnt_enable_io_lock_count(int enable);
 
 /* driver_tab.c */
 typedef void *(*ErtsStaticNifInitFPtr)(void);
-ErtsStaticNifInitFPtr erts_static_nif_get_nif_init(const char *name);
+ErtsStaticNifInitFPtr erts_static_nif_get_nif_init(const char *name, int len);
 int erts_is_static_nif(void *handle);
 void erts_init_static_drivers(void);
 
@@ -858,7 +858,6 @@ void erl_drv_thr_init(void);
 
 /* utils.c */
 void erts_cleanup_offheap(ErlOffHeap *offheap);
-const char *erts_basename(const char* path, char* buff);
 
 Uint64 erts_timestamp_millis(void);
 
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index 6293286c75..43720084d1 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -4019,28 +4019,6 @@ erts_smp_ensure_later_interval_acqb(erts_interval_t *icp, Uint64 ic)
 #endif
 }
 
-const char *erts_basename(const char* path, char* buff) {
-  /* This function is not compliant with bash basename. Edge cases like "//"
-     and "/path//" do not work properly.
-   */
-  int i;
-  int len = strlen(path);
-  const char *basename = path;
-  for (i = 0; path[i] != '\0'; i++) {
-    if (path[i] == '/') {
-      if (path[i+1] == '\0') {
-	    memcpy(buff,basename,len - (basename-path));
-	    buff[len - (basename-path)-1] = '\0';
-	    basename = buff;
-	    break;
-      } else { basename = path+i;}
-    }
-  }
-  if (basename == path)
-    return path;
-  return basename+1;
-}
-
 /*
  * A millisecond timestamp without time correction where there's no hrtime
  * - for tracing on "long" things...
-- 
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