Merge branch 'nox/filelib-wildcard-broken-link' into maint-17

* nox/filelib-wildcard-broken-link:
  Update stdlib appup file
  Update runtime dependencies
  Update preloaded
  Add tests of filelib and symlinks
  Fix handling of broken symlinks in filelib

Conflicts:
	erts/preloaded/ebin/erl_prim_loader.beam

4 files changed, 124 insertions, 10 deletions

diff --git a/lib/stdlib/src/filelib.erl b/lib/stdlib/src/filelib.erl
index c0921e4cf1..9efbe8da20 100644
--- a/lib/stdlib/src/filelib.erl
+++ b/lib/stdlib/src/filelib.erl
@@ -265,7 +265,7 @@ do_wildcard(Pattern, Cwd, Mod) ->
     lists:sort(Files).
 
 do_wildcard_1({exists,File}, Mod) ->
-    case eval_read_file_info(File, Mod) of
+    case eval_read_link_info(File, Mod) of
 	{ok,_} -> [File];
 	_ -> []
     end;
@@ -488,7 +488,7 @@ badpattern(Reason) ->
     error({badpattern,Reason}).
 
 eval_read_file_info(File, file) ->
-    file:read_link_info(File);
+    file:read_file_info(File);
 eval_read_file_info(File, erl_prim_loader) ->
     case erl_prim_loader:read_file_info(File) of
 	error -> {error, erl_prim_loader};
@@ -497,6 +497,16 @@ eval_read_file_info(File, erl_prim_loader) ->
 eval_read_file_info(File, Mod) ->
     Mod:read_file_info(File).
 
+eval_read_link_info(File, file) ->
+    file:read_link_info(File);
+eval_read_link_info(File, erl_prim_loader) ->
+    case erl_prim_loader:read_link_info(File) of
+        error -> {error, erl_prim_loader};
+        Res-> Res
+    end;
+eval_read_link_info(File, Mod) ->
+    Mod:read_link_info(File).
+
 eval_list_dir(Dir, file) ->
     file:list_dir(Dir);
 eval_list_dir(Dir, erl_prim_loader) ->
diff --git a/lib/stdlib/src/stdlib.app.src b/lib/stdlib/src/stdlib.app.src
index d388410de0..3585eec342 100644
--- a/lib/stdlib/src/stdlib.app.src
+++ b/lib/stdlib/src/stdlib.app.src
@@ -103,7 +103,7 @@
                dets]},
   {applications, [kernel]},
   {env, []},
-  {runtime_dependencies, ["sasl-2.4","kernel-3.0","erts-6.0","crypto-3.3",
+  {runtime_dependencies, ["sasl-2.4","kernel-3.0.2","erts-6.1.2","crypto-3.3",
 			  "compiler-5.0"]}
 ]}.
 
diff --git a/lib/stdlib/src/stdlib.appup.src b/lib/stdlib/src/stdlib.appup.src
index 22eefb2514..99d9b8b431 100644
--- a/lib/stdlib/src/stdlib.appup.src
+++ b/lib/stdlib/src/stdlib.appup.src
@@ -17,9 +17,11 @@
 %% %CopyrightEnd%
 {"%VSN%",
  %% Up from - max one major revision back
- [{<<"2\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}, %% R17
+ [{<<"2\\.1(\\.[0-9]+)*">>,[restart_new_emulator]}, %% 17.1
+  {<<"2\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}, %% 17.0
   {<<"1\\.19(\\.[0-9]+)*">>,[restart_new_emulator]}],%% R16
  %% Down to - max one major revision back
- [{<<"2\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}, %% R17
+ [{<<"2\\.1(\\.[0-9]+)*">>,[restart_new_emulator]}, %% 17.1
+  {<<"2\\.0(\\.[0-9]+)*">>,[restart_new_emulator]}, %% 17.0
   {<<"1\\.19(\\.[0-9]+)*">>,[restart_new_emulator]}] %% R16
 }.
diff --git a/lib/stdlib/test/filelib_SUITE.erl b/lib/stdlib/test/filelib_SUITE.erl
index 8203a03a7a..040ae1effc 100644
--- a/lib/stdlib/test/filelib_SUITE.erl
+++ b/lib/stdlib/test/filelib_SUITE.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 2005-2013. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2014. All Rights Reserved.
 %%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
@@ -23,7 +23,8 @@
 	 init_per_group/2,end_per_group/2,
 	 init_per_testcase/2,end_per_testcase/2,
 	 wildcard_one/1,wildcard_two/1,wildcard_errors/1,
-	 fold_files/1,otp_5960/1,ensure_dir_eexist/1,symlinks/1]).
+	 fold_files/1,otp_5960/1,ensure_dir_eexist/1,ensure_dir_symlink/1,
+	 wildcard_symlink/1, is_file_symlink/1, file_props_symlink/1]).
 
 -import(lists, [foreach/2]).
 
@@ -43,7 +44,8 @@ suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() -> 
     [wildcard_one, wildcard_two, wildcard_errors,
-     fold_files, otp_5960, ensure_dir_eexist, symlinks].
+     fold_files, otp_5960, ensure_dir_eexist, ensure_dir_symlink,
+     wildcard_symlink, is_file_symlink, file_props_symlink].
 
 groups() -> 
     [].
@@ -367,9 +369,28 @@ ensure_dir_eexist(Config) when is_list(Config) ->
     ?line {error, eexist} = filelib:ensure_dir(NeedFileB),
     ok.
 
-symlinks(Config) when is_list(Config) ->
+ensure_dir_symlink(Config) when is_list(Config) ->
     PrivDir = ?config(priv_dir, Config),
-    Dir = filename:join(PrivDir, ?MODULE_STRING++"_symlinks"),
+    Dir = filename:join(PrivDir, "ensure_dir_symlink"),
+    Name = filename:join(Dir, "same_name_as_file_and_dir"),
+    ok = filelib:ensure_dir(Name),
+    ok = file:write_file(Name, <<"some string\n">>),
+    %% With a symlink to the directory.
+    Symlink = filename:join(PrivDir, "ensure_dir_symlink_link"),
+    case file:make_symlink(Dir, Symlink) of
+        {error,enotsup} ->
+            {skip,"Symlinks not supported on this platform"};
+        {error,eperm} ->
+            {win32,_} = os:type(),
+            {skip,"Windows user not privileged to create symlinks"};
+        ok ->
+            SymlinkedName = filename:join(Symlink, "same_name_as_file_and_dir"),
+            ok = filelib:ensure_dir(SymlinkedName)
+    end.
+
+wildcard_symlink(Config) when is_list(Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    Dir = filename:join(PrivDir, ?MODULE_STRING++"_wildcard_symlink"),
     SubDir = filename:join(Dir, "sub"),
     AFile = filename:join(SubDir, "a_file"),
     Alias = filename:join(Dir, "symlink"),
@@ -387,6 +408,18 @@ symlinks(Config) when is_list(Config) ->
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"))),
 	    ["symlink"] =
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"))),
+	    ["sub","symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"),
+						erl_prim_loader)),
+	    ["symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"),
+						erl_prim_loader)),
+	    ["sub","symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"),
+						prim_file)),
+	    ["symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"),
+						prim_file)),
 	    ok = file:delete(AFile),
 	    %% The symlink should still be visible even when its target
 	    %% has been deleted.
@@ -394,6 +427,18 @@ symlinks(Config) when is_list(Config) ->
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"))),
 	    ["symlink"] =
 		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"))),
+	    ["sub","symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"),
+						erl_prim_loader)),
+	    ["symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"),
+						erl_prim_loader)),
+	    ["sub","symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "*"),
+						prim_file)),
+	    ["symlink"] =
+		basenames(Dir, filelib:wildcard(filename:join(Dir, "symlink"),
+						prim_file)),
 	    ok
     end.
 
@@ -402,3 +447,60 @@ basenames(Dir, Files) ->
 	 Dir = filename:dirname(F),
 	 filename:basename(F)
      end || F <- Files].
+
+is_file_symlink(Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    Dir = filename:join(PrivDir, ?MODULE_STRING++"_is_file_symlink"),
+    SubDir = filename:join(Dir, "sub"),
+    AFile = filename:join(SubDir, "a_file"),
+    DirAlias = filename:join(Dir, "dir_symlink"),
+    FileAlias = filename:join(Dir, "file_symlink"),
+    ok = file:make_dir(Dir),
+    ok = file:make_dir(SubDir),
+    ok = file:write_file(AFile, "not that big\n"),
+    case file:make_symlink(SubDir, DirAlias) of
+	{error, enotsup} ->
+	    {skip, "Links not supported on this platform"};
+	{error, eperm} ->
+	    {win32,_} = os:type(),
+	    {skip, "Windows user not privileged to create symlinks"};
+	ok ->
+	    true = filelib:is_dir(DirAlias),
+	    true = filelib:is_dir(DirAlias, erl_prim_loader),
+	    true = filelib:is_dir(DirAlias, prim_file),
+	    true = filelib:is_file(DirAlias),
+	    true = filelib:is_file(DirAlias, erl_prim_loader),
+	    true = filelib:is_file(DirAlias, prim_file),
+	    ok = file:make_symlink(AFile,FileAlias),
+	    true = filelib:is_file(FileAlias),
+	    true = filelib:is_file(FileAlias, erl_prim_loader),
+	    true = filelib:is_file(FileAlias, prim_file),
+	    true = filelib:is_regular(FileAlias),
+	    true = filelib:is_regular(FileAlias, erl_prim_loader),
+	    true = filelib:is_regular(FileAlias, prim_file),
+	    ok
+    end.
+
+file_props_symlink(Config) ->
+    PrivDir = ?config(priv_dir, Config),
+    Dir = filename:join(PrivDir, ?MODULE_STRING++"_file_props_symlink"),
+    AFile = filename:join(Dir, "a_file"),
+    Alias = filename:join(Dir, "symlink"),
+    ok = file:make_dir(Dir),
+    ok = file:write_file(AFile, "not that big\n"),
+    case file:make_symlink(AFile, Alias) of
+	{error, enotsup} ->
+	    {skip, "Links not supported on this platform"};
+	{error, eperm} ->
+	    {win32,_} = os:type(),
+	    {skip, "Windows user not privileged to create symlinks"};
+	ok ->
+	    {_,_} = LastMod = filelib:last_modified(AFile),
+	    LastMod = filelib:last_modified(Alias),
+	    LastMod = filelib:last_modified(Alias, erl_prim_loader),
+	    LastMod = filelib:last_modified(Alias, prim_file),
+	    FileSize = filelib:file_size(AFile),
+	    FileSize = filelib:file_size(Alias),
+	    FileSize = filelib:file_size(Alias, erl_prim_loader),
+	    FileSize = filelib:file_size(Alias, prim_file)
+    end.