From 3c5baf40ff8967d0b3190c5fabe15fb1487f6c52 Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Mon, 16 Dec 2013 11:55:49 +0100
Subject: erts: Add 'extra' argument to erts_convert_filename_to_encoding

---
 erts/emulator/beam/erl_bif_port.c |  2 +-
 erts/emulator/beam/erl_nif.c      |  3 ++-
 erts/emulator/beam/erl_unicode.c  | 17 ++++++++++-------
 erts/emulator/beam/global.h       |  3 ++-
 4 files changed, 15 insertions(+), 10 deletions(-)

(limited to 'erts')

diff --git a/erts/emulator/beam/erl_bif_port.c b/erts/emulator/beam/erl_bif_port.c
index 864349491a..f298422267 100644
--- a/erts/emulator/beam/erl_bif_port.c
+++ b/erts/emulator/beam/erl_bif_port.c
@@ -808,7 +808,7 @@ open_port(Process* p, Eterm name, Eterm settings, int *err_typep, int *err_nump)
 	    if (encoding == ERL_FILENAME_WIN_WCHAR) {
 		encoding = ERL_FILENAME_UTF8;
 	    }
-	    if ((name_buf = erts_convert_filename_to_encoding(name, NULL, 0, ERTS_ALC_T_TMP,0,1, encoding, NULL))
+	    if ((name_buf = erts_convert_filename_to_encoding(name, NULL, 0, ERTS_ALC_T_TMP,0,1, encoding, NULL, 0))
 		== NULL) {
 		goto badarg;
 	    }
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index de626ca4e1..dc285b3cf7 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -1587,7 +1587,8 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
         encoding = ERL_FILENAME_UTF8;
     }
     lib_name = erts_convert_filename_to_encoding(BIF_ARG_1, NULL, 0,
-                                                 ERTS_ALC_T_TMP, 1, 0, encoding, NULL);
+                                                 ERTS_ALC_T_TMP, 1, 0, encoding,
+						 NULL, 0);
     if (!lib_name) {
 	BIF_ERROR(BIF_P, BADARG);
     }
diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index 7e3c6681d9..3a968594f3 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -1990,12 +1990,14 @@ char *erts_convert_filename_to_native(Eterm name, char *statbuf, size_t statbuf_
 {
     int encoding = erts_get_native_filename_encoding();
     return erts_convert_filename_to_encoding(name, statbuf, statbuf_size, alloc_type,
-					     allow_empty, allow_atom, encoding, used);
+					     allow_empty, allow_atom, encoding,
+					     used, 0);
 }
 
 char *erts_convert_filename_to_encoding(Eterm name, char *statbuf, size_t statbuf_size,
 					ErtsAlcType_t alloc_type, int allow_empty,
-					int allow_atom, int encoding, Sint *used)
+					int allow_atom, int encoding, Sint *used,
+					Uint extra)
 {
     char* name_buf = NULL;
 
@@ -2008,13 +2010,14 @@ char *erts_convert_filename_to_encoding(Eterm name, char *statbuf, size_t statbu
 	}
 	if (encoding == ERL_FILENAME_WIN_WCHAR) {
 	    need += 2;
+	    extra *= 2;
 	} else {
 	    ++need;
 	}
 	if (used) 
 	    *used = (Sint) need;
-	if (need > statbuf_size) {
-	    name_buf = (char *) erts_alloc(alloc_type, need);
+	if (need+extra > statbuf_size) {
+	    name_buf = (char *) erts_alloc(alloc_type, need+extra);
 	} else {
 	    name_buf = statbuf;
 	}
@@ -2035,8 +2038,8 @@ char *erts_convert_filename_to_encoding(Eterm name, char *statbuf, size_t statbu
 	    /*Add 0 termination only*/
 	    if (used) 
 		*used = (Sint) size+1;
-	    if (size+1 > statbuf_size) {
-		name_buf = (char *) erts_alloc(alloc_type, size+1);
+	    if (size+1+extra > statbuf_size) {
+		name_buf = (char *) erts_alloc(alloc_type, size+1+extra);
 	    } else {
 		name_buf = statbuf;
 	    }
@@ -2045,7 +2048,7 @@ char *erts_convert_filename_to_encoding(Eterm name, char *statbuf, size_t statbu
 	} else {
             name_buf = erts_convert_filename_to_wchar(bytes, size,
                                                       statbuf, statbuf_size,
-                                                      alloc_type, used, 0);
+                                                      alloc_type, used, extra);
         }
 	erts_free_aligned_binary_bytes(temp_alloc);
     } else {
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 94bc1b172a..6e5d352e5b 100755
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -921,7 +921,8 @@ char *erts_convert_filename_to_encoding(Eterm name, char *statbuf,
 					ErtsAlcType_t alloc_type,
 					int allow_empty, int allow_atom,
 					int encoding,
-					Sint *used /* out */);
+					Sint *used /* out */,
+					Uint extra);
 char* erts_convert_filename_to_wchar(byte* bytes, Uint size,
                                      char *statbuf, size_t statbuf_size,
                                      ErtsAlcType_t alloc_type, Sint* used,
-- 
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