aboutsummaryrefslogblamecommitdiffstats
path: root/lib/kernel/test/file_SUITE.erl
blob: 6b52493f46552f94e4cd3c0385ae4a22764aa535 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276

                   
  
                                                        
  




                                                                      
  



                                                                         
  

























                                                                    

                                                                    
                                                 
                                      
                                                  

                                                              



                                                         
                                                                
                                                              
                                                                      
                                                            
                                                              
                                                              
                                   
 
                                       

                                                                   

                                                                  
 
                                                                   














                                                                          
                                       


                                                                     

                    

                      

                                       

                             





                                                           
                                                                     
                                  
 
                                                    



                                        
                                         
 
         



                                                            
                                                                   
                                                                    
                                                

            
                                                    

                                                                


                                                        
                                                    















                                                              

                                                          

                                                           
 
                                     
           

                                    
           
 
 
                                              





                                                        






                                          










                                                                     
                                                          
            
                                          

        
                                             





                                  






                                    





                                             





                                                               
                                  


































                                                                      



                      
                                                          








































































                                                               
























                                                               
                                                                      



























































                                                                       












                                                             










                                                                       
                                                               





















                                                                               
                                                                








                                                                 
        




































































                                                                    




                                                                     



















                                                             



































                                                                  








































                                                                           

































                                                                        




























                                                             

 

                                                                      
 
















                                                             



                                     



























































































                                                               













                                                               






































































































































































































































































                                                                           















                                                                        

                                                                      


























































































                                                                        



































                                                                               
                                                       



                                                                 
                                                         

                                                                   
                                        




                                                                            




                                                     
            


                                           










































































































































































































                                                                               



























































                                                                           







































































                                                                                








































































































                                                                              























                                                                              






















                                                                      






































































                                                                          



































































                                                                               






























































































































                                                                      


























                                                                          



                                                                     



                                                                     
                                                         













                                                                           






















































































                                                                            


                               




                                     





                                                                      




                                                             

                                              
                                                                             

                                                      






                                                         


                                    


                     


                                                                                 
                                                   
        
                                     






                                                                      




                                                                      

                                       
                      


                                                                  





                                                           

                                    
                                                                              
                                           
                                  

                                    
                                          



                                              
                                  


                     


                     



                                                                     
                                                                        
        

                                     



                                                                      











































































                                                                           



                                                     
































































































                                                                               
                                                              























































































                                                                             


















































                                                                               






























                                                                           























































                                                                          
                                                                         
                                                                       






















                                                                       
                                                               

                                                                                  





















































































































































































                                                                               













                                                                    

                                                    
                
                                                                        














                                                                        


                                                                








































                                                          

                                                        




















                                                          

                                                     










                                                           
      


                            








































































































































































































































































































































































































































































                                                                               
                                         



                                                                      
                                     



































































































































                                                                            










































                                                                      




                                                


                                                             
 
                      
                                                 
 






















                                                              










                                                                      
      




                                                                      





                                                              



                                                  
                                             




                                                








                                                                      







































































































































































































































                                                                               
                                                              





















































































































































































































































































































































                                                                                        








                                                      


                                                                     
                                                     
                                                    





































                                                                    







                                                                       

            

                                              














                                                                    
%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1996-2013. 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
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%

%% This is a developement feature when developing a new file module,
%% ugly but practical.
-ifndef(FILE_MODULE).
-define(FILE_MODULE, file).
-endif.
-ifndef(FILE_SUITE).
-define(FILE_SUITE, file_SUITE).
-endif.
-ifndef(FILE_INIT).
-define(FILE_INIT(Config), Config).
-endif.
-ifndef(FILE_FINI).
-define(FILE_FINI(Config), Config).
-endif.
-ifndef(FILE_INIT_PER_TESTCASE).
-define(FILE_INIT_PER_TESTCASE(Config), Config).
-endif.
-ifndef(FILE_FIN_PER_TESTCASE).
-define(FILE_FIN_PER_TESTCASE(Config), Config).
-endif.

-module(?FILE_SUITE).

-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, 
	 init_per_group/2,end_per_group/2,
	 init_per_testcase/2, end_per_testcase/2,
	 read_write_file/1, names/1]).
-export([cur_dir_0/1, cur_dir_1/1, make_del_dir/1,
	 list_dir/1,list_dir_error/1,
	 untranslatable_names/1, untranslatable_names_error/1,
	 pos1/1, pos2/1]).
-export([close/1, consult1/1, path_consult/1, delete/1]).
-export([ eval1/1, path_eval/1, script1/1, path_script/1,
	 open1/1,
	 old_modes/1, new_modes/1, path_open/1, open_errors/1]).
-export([ file_info_basic_file/1, file_info_basic_directory/1,
	 file_info_bad/1, file_info_times/1, file_write_file_info/1]).
-export([rename/1, access/1, truncate/1, datasync/1, sync/1,
	 read_write/1, pread_write/1, append/1, exclusive/1]).
-export([ e_delete/1, e_rename/1, e_make_dir/1, e_del_dir/1]).
-export([otp_5814/1, otp_10852/1]).

-export([ read_not_really_compressed/1,
	 read_compressed_cooked/1, read_compressed_cooked_binary/1,
	 read_cooked_tar_problem/1,
	 write_compressed/1, compress_errors/1, catenated_gzips/1,
	 compress_async_crash/1]).

-export([ make_link/1, read_link_info_for_non_link/1, symlinks/1]).

-export([copy/1]).

-export([new_slave/2, old_slave/2, run_test/2]).

-export([delayed_write/1, read_ahead/1, segment_read/1, segment_write/1]).

-export([ipread/1]).

-export([pid2name/1]).

-export([interleaved_read_write/1]).

-export([altname/1]).

-export([large_file/1, large_write/1]).

-export([read_line_1/1, read_line_2/1, read_line_3/1,read_line_4/1]).

-export([advise/1]).

-export([allocate/1]).

-export([standard_io/1,mini_server/1]).

-export([old_io_protocol/1]).

%% Debug exports
-export([create_file_slow/2, create_file/2, create_bin/2]).
-export([verify_file/2, verify_bin/3]).
-export([bytes/2, iterate/3]).


%% System probe functions that might be handy to check from the shell
-export([disc_free/1, memsize/0]).

-include_lib("test_server/include/test_server.hrl").
-include_lib("kernel/include/file.hrl").



suite() -> [{ct_hooks,[ts_install_cth]}].

all() -> 
    [altname, read_write_file, {group, dirs},
     {group, files}, delete, rename, names, {group, errors},
     {group, compression}, {group, links}, copy,
     delayed_write, read_ahead, segment_read, segment_write,
     ipread, pid2name, interleaved_read_write, otp_5814, otp_10852,
     large_file, large_write, read_line_1, read_line_2, read_line_3,
     read_line_4, standard_io, old_io_protocol].

groups() -> 
    [{dirs, [], [make_del_dir, cur_dir_0, cur_dir_1,
		 list_dir, list_dir_error, untranslatable_names,
		 untranslatable_names_error]},
     {files, [],
      [{group, open}, {group, pos}, {group, file_info},
       {group, consult}, {group, eval}, {group, script},
       truncate, sync, datasync, advise, allocate]},
     {open, [],
      [open1, old_modes, new_modes, path_open, close, access,
       read_write, pread_write, append, open_errors,
       exclusive]},
     {pos, [], [pos1, pos2]},
     {file_info, [],
      [file_info_basic_file, file_info_basic_directory,
       file_info_bad, file_info_times, file_write_file_info]},
     {consult, [], [consult1, path_consult]},
     {eval, [], [eval1, path_eval]},
     {script, [], [script1, path_script]},
     {errors, [],
      [e_delete, e_rename, e_make_dir, e_del_dir]},
     {compression, [],
      [read_compressed_cooked, read_compressed_cooked_binary,
       read_cooked_tar_problem, read_not_really_compressed,
       write_compressed, compress_errors, catenated_gzips,
       compress_async_crash]},
     {links, [],
      [make_link, read_link_info_for_non_link, symlinks]}].

init_per_group(_GroupName, Config) ->
    Config.

end_per_group(_GroupName, Config) ->
    Config.


init_per_suite(Config) when is_list(Config) ->
    SaslConfig = case application:start(sasl) of
		     {error, {already_started, sasl}} ->
			 [];
		     ok ->
			 [{sasl,started}]
		 end,
    ok = case os:type() of
	     {ose,_} ->
		 ok;
	     _ ->
		 application:start(os_mon)
	 end,

    case os:type() of
	{win32, _} ->
	    Priv = ?config(priv_dir, Config),
	    HasAccessTime =
		case ?FILE_MODULE:read_file_info(Priv) of
		    {ok, #file_info{atime={_, {0, 0, 0}}}} ->
			%% This is a unfortunately a FAT file system.
			[no_access_time];
		    {ok, _} ->
			[]
		end,
	    ?FILE_INIT(HasAccessTime++Config++SaslConfig);
	_ ->
	    ?FILE_INIT(Config++SaslConfig)
    end.

end_per_suite(Config) when is_list(Config) ->
    case os:type() of
	{win32, _} ->
	    os:cmd("subst z: /d");
	_ ->
	    ok
    end,

    case os:type() of
	{ose,_} ->
	    ok;
	_ ->
	    application:stop(os_mon)
    end,
    case proplists:get_value(sasl, Config) of
	started ->
	    application:stop(sasl);
	_Else ->
	    ok
    end,
    ?FILE_FINI(Config).

init_per_testcase(_Func, Config) ->
    %%error_logger:info_msg("~p:~p *****~n", [?MODULE, _Func]),
    ?FILE_INIT_PER_TESTCASE(Config).

end_per_testcase(_Func, Config) ->
    %% error_logger:info_msg("~p:~p END *****~n", [?MODULE, _Func]),
    ?FILE_FIN_PER_TESTCASE(Config).

%% Matches a term (the last) against alternatives
expect(X, _, X) ->
    X;
expect(_, X, X) ->
    X.

expect(X, _, _, X) ->
    X;
expect(_, X, _, X) ->
    X;
expect(_, _, X, X) ->
    X.

expect(X, _, _, _, X) ->
    X;
expect(_, X, _, _, X) ->
    X;
expect(_, _, X, _, X) ->
    X;
expect(_, _, _, X, X) ->
    X.

%% Calculate the time difference
time_dist({YY, MM, DD, H, M, S}, DT) ->
    time_dist({{YY, MM, DD}, {H, M, S}}, DT);
time_dist(DT, {YY, MM, DD, H, M, S}) ->
    time_dist(DT, {{YY, MM, DD}, {H, M, S}});
time_dist({_D1, _T1} = DT1, {_D2, _T2} = DT2) ->
    calendar:datetime_to_gregorian_seconds(DT2)
	- calendar:datetime_to_gregorian_seconds(DT1).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
mini_server(Parent) ->
    receive
	die ->
	    ok;
	{io_request,From,To,{put_chars,_Encoding,Data}} ->
	    Parent ! {io_request,From,To,{put_chars,Data}},
	    From ! {io_reply, To, ok},
	    mini_server(Parent);
	{io_request,From,To,{get_chars,'',N}} ->
	    Parent ! {io_request,From,To,{get_chars,'',N}},
	    From ! {io_reply, To, {ok, lists:duplicate(N,$a)}},
	    mini_server(Parent);
	{io_request,From,To,{get_line,''}} ->
	    Parent ! {io_request,From,To,{get_line,''}},
	    From ! {io_reply, To, {ok, "hej\n"}},
	    mini_server(Parent)
    end.

standard_io(suite) ->
    [];
standard_io(doc) ->
    ["Test that standard i/o-servers work with file module"];
standard_io(Config) when is_list(Config) ->
    %% Really just a smoke test
    ?line Pid = spawn(?MODULE,mini_server,[self()]),
    ?line register(mini_server,Pid),
    ?line ok = file:write(mini_server,<<"hej\n">>),
    ?line receive
	     {io_request,_,_,{put_chars,<<"hej\n">>}} ->
		  ok
	  after 1000 ->
		  exit(noreply)
	  end,
    ?line {ok,"aaaaa"} = file:read(mini_server,5),
    ?line receive
	     {io_request,_,_,{get_chars,'',5}} ->
		  ok
	  after 1000 ->
		  exit(noreply)
	  end,
    ?line {ok,"hej\n"} = file:read_line(mini_server),
    ?line receive
	     {io_request,_,_,{get_line,''}} ->
		  ok
	  after 1000 ->
		  exit(noreply)
	  end,
    ?line OldGL = group_leader(),
    ?line group_leader(Pid,self()),
    ?line ok = file:write(standard_io,<<"hej\n">>),
    ?line group_leader(OldGL,self()),
    ?line receive
	     {io_request,_,_,{put_chars,<<"hej\n">>}} ->
		  ok
	  after 1000 ->
		  exit(noreply)
	  end,
    ?line group_leader(Pid,self()),
    ?line {ok,"aaaaa"} = file:read(standard_io,5),
    ?line group_leader(OldGL,self()),
    ?line receive
	     {io_request,_,_,{get_chars,'',5}} ->
		  ok
	  after 1000 ->
		  exit(noreply)
	  end,
    ?line group_leader(Pid,self()),
    ?line {ok,"hej\n"} = file:read_line(standard_io),
    ?line group_leader(OldGL,self()),
    ?line receive
	     {io_request,_,_,{get_line,''}} ->
		  ok
	  after 1000 ->
		  exit(noreply)
	  end,
    Pid ! die,
    receive after 1000 -> ok end.

old_io_protocol(suite) ->
    [];
old_io_protocol(doc) ->
    ["Test that the old file IO protocol =< R16B still works"];
old_io_protocol(Config) when is_list(Config) ->
    Dog = test_server:timetrap(test_server:seconds(5)),
    RootDir = ?config(priv_dir,Config),
    Name = filename:join(RootDir,
			 atom_to_list(?MODULE)
			 ++"old_io_protocol.fil"),
    MyData = "0123456789abcdefghijklmnopqrstuvxyz",
    ok = ?FILE_MODULE:write_file(Name, MyData),
    {ok, Fd} = ?FILE_MODULE:open(Name, write),
    Fd ! {file_request,self(),Fd,truncate},
    receive
	{file_reply,Fd,ok} -> ok
    end,
    ok = ?FILE_MODULE:close(Fd),
    {ok, <<>>} = ?FILE_MODULE:read_file(Name),
    test_server:timetrap_cancel(Dog),
    [] = flush(),
    ok.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

read_write_file(suite) -> [];
read_write_file(doc) -> [];
read_write_file(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_read_write_file"),

    %% Try writing and reading back some term
    ?line SomeTerm = {"This term",{will,be},[written,$t,$o],1,file,[]},
    ?line ok = ?FILE_MODULE:write_file(Name,term_to_binary(SomeTerm)),
    ?line {ok,Bin1} = ?FILE_MODULE:read_file(Name),
    ?line SomeTerm = binary_to_term(Bin1),
  
    %% Try a "null" term
    ?line NullTerm = [],
    ?line ok = ?FILE_MODULE:write_file(Name,term_to_binary(NullTerm)),
    ?line {ok,Bin2} = ?FILE_MODULE:read_file(Name),
    ?line NullTerm = binary_to_term(Bin2),

    %% Try some "complicated" types
    ?line BigNum = 123456789012345678901234567890,
    ?line ComplTerm = {self(),make_ref(),BigNum,3.14159},
    ?line ok = ?FILE_MODULE:write_file(Name,term_to_binary(ComplTerm)),
    ?line {ok,Bin3} = ?FILE_MODULE:read_file(Name),
    ?line ComplTerm = binary_to_term(Bin3),

    %% Try reading a nonexistent file
    ?line Name2 = filename:join(RootDir, 
				atom_to_list(?MODULE)
				++"_nonexistent_file"),
    ?line {error, enoent} = ?FILE_MODULE:read_file(Name2),
    ?line {error, enoent} = ?FILE_MODULE:read_file(""),
    ?line {error, enoent} = ?FILE_MODULE:read_file(''),

    % Try writing to a bad filename
    ?line {error, enoent} = 
	?FILE_MODULE:write_file("",term_to_binary(NullTerm)),

    % Try writing something else than a binary
    ?line {error, badarg} = ?FILE_MODULE:write_file(Name,{1,2,3}),
    ?line {error, badarg} = ?FILE_MODULE:write_file(Name,self()),

    %% Some non-term binaries
    ?line ok = ?FILE_MODULE:write_file(Name,[]),
    ?line {ok,Bin4} = ?FILE_MODULE:read_file(Name),
    ?line 0 = byte_size(Bin4),

    ?line ok = ?FILE_MODULE:write_file(Name,[Bin1,[],[[Bin2]]]),
    ?line {ok,Bin5} = ?FILE_MODULE:read_file(Name),
    ?line {Bin1,Bin2} = split_binary(Bin5,byte_size(Bin1)),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


make_del_dir(suite) -> [];
make_del_dir(doc) -> [];
make_del_dir(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_mk-dir"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line {error, eexist} = ?FILE_MODULE:make_dir(NewDir),
    ?line ok = ?FILE_MODULE:del_dir(NewDir),
    ?line {error, enoent} = ?FILE_MODULE:del_dir(NewDir),
    % Make sure we are not in a directory directly under test_server
    % as that would result in eacess errors when trying to delere '..',
    % because there are processes having that directory as current.
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line {ok,CurrentDir} = file:get_cwd(),
    ?line ok = ?FILE_MODULE:set_cwd(NewDir),
    try
	%% Check that we get an error when trying to create...
	%% a deep directory
	?line NewDir2 = filename:join(RootDir, 
				      atom_to_list(?MODULE)
				      ++"_mk-dir-noexist/foo"),
	?line {error, enoent} = ?FILE_MODULE:make_dir(NewDir2),
	%% a nameless directory
	?line {error, enoent} = ?FILE_MODULE:make_dir(""),
	%% a directory with illegal name
	?line {error, badarg} = ?FILE_MODULE:make_dir({1,2,3}),
	
	%% a directory with illegal name, even if it's a (bad) list
	?line {error, badarg} = ?FILE_MODULE:make_dir([1,2,3,{}]),
	
	%% Maybe this isn't an error, exactly, but worth mentioning anyway:
	%% ok = ?FILE_MODULE:make_dir([$f,$o,$o,0,$b,$a,$r])),
	%% The above line works, and created a directory "./foo"
	%% More elegant would maybe have been to fail, or to really create
	%% a directory, but with a name that incorporates the "bar" part of
	%% the list, so that [$f,$o,$o,0,$f,$o,$o] wouldn't refer to the same
	%% dir. But this would slow it down.
	
	%% Try deleting some bad directories
	%% Deleting the parent directory to the current, sounds dangerous, huh?
	%% Don't worry ;-) the parent directory should never be empty, right?
	?line case ?FILE_MODULE:del_dir('..') of
		  {error, eexist} -> ok;
		  {error, eacces} -> ok;		%OpenBSD
		  {error, einval} -> ok			%FreeBSD
	      end,
	?line {error, enoent} = ?FILE_MODULE:del_dir(""),
	?line {error, badarg} = ?FILE_MODULE:del_dir([3,2,1,{}]),
	
	?line [] = flush(),
	?line test_server:timetrap_cancel(Dog)
    after
	 ?FILE_MODULE:set_cwd(CurrentDir)
    end,
    ok.

cur_dir_0(suite) -> [];
cur_dir_0(doc) -> [];
cur_dir_0(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    %% Find out the current dir, and cd to it ;-)
    ?line {ok,BaseDir} = ?FILE_MODULE:get_cwd(),
    ?line Dir1 = BaseDir ++ "", %% Check that it's a string
    ?line ok = ?FILE_MODULE:set_cwd(Dir1),

    %% Make a new dir, and cd to that
    ?line RootDir = ?config(priv_dir,Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_curdir"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line io:format("cd to ~s",[NewDir]),
    ?line ok = ?FILE_MODULE:set_cwd(NewDir),

    %% Create a file in the new current directory, and check that it
    %% really is created there
    ?line UncommonName = "uncommon.fil",
    ?line {ok,Fd} = ?FILE_MODULE:open(UncommonName,read_write),
    ?line ok = ?FILE_MODULE:close(Fd),
    ?line {ok,NewDirFiles} = ?FILE_MODULE:list_dir("."),
    ?line true = lists:member(UncommonName,NewDirFiles),

    %% Delete the directory and return to the old current directory
    %% and check that the created file isn't there (too!)
    ?line expect({error, einval}, {error, eacces}, 
		 ?FILE_MODULE:del_dir(NewDir)),
    ?line ?FILE_MODULE:delete(UncommonName),
    ?line {ok,[]} = ?FILE_MODULE:list_dir("."),
    ?line ok = ?FILE_MODULE:set_cwd(Dir1),
    ?line io:format("cd back to ~s",[Dir1]),
    ?line ok = ?FILE_MODULE:del_dir(NewDir),
    ?line {error, enoent} = ?FILE_MODULE:set_cwd(NewDir),
    ?line ok = ?FILE_MODULE:set_cwd(Dir1),
    ?line io:format("cd back to ~s",[Dir1]),
    ?line {ok,OldDirFiles} = ?FILE_MODULE:list_dir("."),
    ?line false = lists:member(UncommonName,OldDirFiles),

    %% Try doing some bad things
    ?line {error, badarg} = ?FILE_MODULE:set_cwd({foo,bar}),
    ?line {error, enoent} = ?FILE_MODULE:set_cwd(""),
    ?line {error, enoent} = ?FILE_MODULE:set_cwd(".......a......"),
    ?line {ok,BaseDir} = ?FILE_MODULE:get_cwd(), %% Still there?

    %% On Windows, there should only be slashes, no backslashes,
    %% in the return value of get_cwd().
    %% (The test is harmless on Unix, because filenames usually
    %% don't contain backslashes.)

    ?line {ok, BaseDir} = ?FILE_MODULE:get_cwd(),
    ?line false = lists:member($\\, BaseDir),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%% Tests ?FILE_MODULE:get_cwd/1.

cur_dir_1(suite) -> [];
cur_dir_1(doc) -> [];
cur_dir_1(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),

    ?line case os:type() of
	   {win32, _} ->
		  win_cur_dir_1(Config);
	    _ ->
		  ?line {error, enotsup} = ?FILE_MODULE:get_cwd("d:")
      end,
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.
	
win_cur_dir_1(_Config) ->
    ?line {ok,BaseDir} = ?FILE_MODULE:get_cwd(),

    %% Get the drive letter from the current directory,
    %% and try to get current directory for that drive.

    ?line [Drive,$:|_] = BaseDir,
    ?line {ok,BaseDir} = ?FILE_MODULE:get_cwd([Drive,$:]),
    io:format("BaseDir = ~s\n", [BaseDir]),

    %% Unfortunately, there is no way to move away from the
    %% current drive as we can't use the "subst" command from
    %% a SSH connection. We can't test any more.

    ok.


%%%
%%% Test list_dir() on a non-existing pathname.
%%%

list_dir_error(Config) ->
    Priv = ?config(priv_dir, Config),
    NonExisting = filename:join(Priv, "non-existing-dir"),
    {error,enoent} = ?FILE_MODULE:list_dir(NonExisting),
    ok.

%%%
%%% Test list_dir() and list_dir_all().
%%%

list_dir(Config) ->
    RootDir = ?config(priv_dir, Config),
    TestDir = filename:join(RootDir, ?MODULE_STRING++"_list_dir"),
    ?FILE_MODULE:make_dir(TestDir),
    list_dir_1(TestDir, 42, []).

list_dir_1(TestDir, 0, Sorted) ->
    [ok = ?FILE_MODULE:delete(filename:join(TestDir, F)) ||
	F <- Sorted],
    ok = ?FILE_MODULE:del_dir(TestDir);
list_dir_1(TestDir, Cnt, Sorted0) ->
    Base = "file" ++ integer_to_list(Cnt),
    Name = filename:join(TestDir, Base),
    ok = ?FILE_MODULE:write_file(Name, Base),
    Sorted = lists:merge([Base], Sorted0),
    {ok,DirList0} = ?FILE_MODULE:list_dir(TestDir),
    {ok,DirList1} = ?FILE_MODULE:list_dir_all(TestDir),
    Sorted = lists:sort(DirList0),
    Sorted = lists:sort(DirList1),
    list_dir_1(TestDir, Cnt-1, Sorted).

untranslatable_names(Config) ->
    case no_untranslatable_names() of
	true ->
	    {skip,"Not a problem on this OS"};
	false ->
	    untranslatable_names_1(Config)
    end.

untranslatable_names_1(Config) ->
    {ok,OldCwd} = file:get_cwd(),
    PrivDir = ?config(priv_dir, Config),
    Dir = filename:join(PrivDir, "untranslatable_names"),
    ok = file:make_dir(Dir),
    Node = start_node(untranslatable_names, "+fnu"),
    try
	ok = file:set_cwd(Dir),
	[ok = file:write_file(F, F) || {_,F} <- untranslatable_names()],

	ExpectedListDir0 = [unicode:characters_to_list(N, utf8) ||
			       {utf8,N} <- untranslatable_names()],
	ExpectedListDir = lists:sort(ExpectedListDir0),
	io:format("ExpectedListDir: ~p\n", [ExpectedListDir]),
	ExpectedListDir = call_and_sort(Node, file, list_dir, [Dir]),

	ExpectedListDirAll0 = [case Enc of
				   utf8 ->
				       unicode:characters_to_list(N, utf8);
				   latin1 ->
				       N
			       end || {Enc,N} <- untranslatable_names()],
	ExpectedListDirAll = lists:sort(ExpectedListDirAll0),
	io:format("ExpectedListDirAll: ~p\n", [ExpectedListDirAll]),
	ExpectedListDirAll = call_and_sort(Node, file, list_dir_all, [Dir])
    after
	catch test_server:stop_node(Node),
	file:set_cwd(OldCwd),
	[file:delete(F) || {_,F} <- untranslatable_names()],
	file:del_dir(Dir)
    end,
    ok.

untranslatable_names_error(Config) ->
    case no_untranslatable_names() of
	true ->
	    {skip,"Not a problem on this OS"};
	false ->
	    untranslatable_names_error_1(Config)
    end.

untranslatable_names_error_1(Config) ->
    {ok,OldCwd} = file:get_cwd(),
    PrivDir = ?config(priv_dir, Config),
    Dir = filename:join(PrivDir, "untranslatable_names_error"),
    ok = file:make_dir(Dir),
    Node = start_node(untranslatable_names, "+fnue"),
    try
	ok = file:set_cwd(Dir),
	[ok = file:write_file(F, F) || {_,F} <- untranslatable_names()],

	ExpectedListDir0 = [unicode:characters_to_list(N, utf8) ||
			       {utf8,N} <- untranslatable_names()],
	ExpectedListDir = lists:sort(ExpectedListDir0),
	io:format("ExpectedListDir: ~p\n", [ExpectedListDir]),
	{error,{no_translation,BadFile}} =
	    rpc:call(Node, file, list_dir, [Dir]),
	true = lists:keymember(BadFile, 2, untranslatable_names())

    after
	catch test_server:stop_node(Node),
	file:set_cwd(OldCwd),
	[file:delete(F) || {_,F} <- untranslatable_names()],
	file:del_dir(Dir)
    end,
    ok.

untranslatable_names() ->
    [{utf8,<<"abc">>},
     {utf8,<<"def">>},
     {utf8,<<"Lagerl",195,182,"f">>},
     {utf8,<<195,150,"stra Emterwik">>},
     {latin1,<<"M",229,"rbacka">>},
     {latin1,<<"V",228,"rmland">>}].

call_and_sort(Node, M, F, A) ->
    {ok,Res} = rpc:call(Node, M, F, A),
    lists:sort(Res).

no_untranslatable_names() ->
    case os:type() of
	{unix,darwin} -> true;
	{win32,_} -> true;
	_ -> false
    end.

start_node(Name, Args) ->
    [_,Host] = string:tokens(atom_to_list(node()), "@"),
    ct:log("Trying to start ~w@~s~n", [Name,Host]),
    case test_server:start_node(Name, peer, [{args,Args}]) of
	{error,Reason} ->
	    test_server:fail(Reason);
	{ok,Node} ->
	    ct:log("Node ~p started~n", [Node]),
	    Node
    end.


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



open1(suite) -> [];
open1(doc) -> [];
open1(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_files"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line Name = filename:join(NewDir, "foo1.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,read_write),
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,read),
    ?line Str = "{a,tuple}.\n",
    ?line io:format(Fd1,Str,[]),
    ?line {ok,0} = ?FILE_MODULE:position(Fd1,bof),
    ?line Str = io:get_line(Fd1,''),
    ?line case io:get_line(Fd2,'') of
	      Str -> Str;
	      eof -> Str
	  end,
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {ok,0} = ?FILE_MODULE:position(Fd1,bof),
    ?line ok = ?FILE_MODULE:truncate(Fd1),
    ?line eof = io:get_line(Fd1,''),
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line {ok,Fd3} = ?FILE_MODULE:open(Name,read),
    ?line eof = io:get_line(Fd3,''),
    ?line ok = ?FILE_MODULE:close(Fd3),
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%% Tests all open modes.

old_modes(suite) -> [];
old_modes(doc) -> [];
old_modes(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_old_open_modes"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line Name1 = filename:join(NewDir, "foo1.fil"),
    ?line Marker = "hello, world",

    %% write
    ?line {ok, Fd1} = ?FILE_MODULE:open(Name1, write),
    ?line ok = io:write(Fd1, Marker),
    ?line ok = io:put_chars(Fd1, ".\n"),
    ?line ok = ?FILE_MODULE:close(Fd1),

    %% read
    ?line {ok, Fd2} = ?FILE_MODULE:open(Name1, read),
    ?line {ok, Marker} = io:read(Fd2, prompt),
    ?line ok = ?FILE_MODULE:close(Fd2),

    %% read_write
    ?line {ok, Fd3} = ?FILE_MODULE:open(Name1, read_write),
    ?line {ok, Marker} = io:read(Fd3, prompt),
    ?line ok = io:write(Fd3, Marker),
    ?line ok = ?FILE_MODULE:close(Fd3),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.


new_modes(suite) -> [];
new_modes(doc) -> [];
new_modes(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_new_open_modes"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line Name1 = filename:join(NewDir, "foo1.fil"),
    ?line Marker = "hello, world",

    %% write
    ?line {ok, Fd1} = ?FILE_MODULE:open(Name1, [write]),
    ?line ok = io:write(Fd1, Marker),
    ?line ok = io:put_chars(Fd1, ".\n"),
    ?line ok = ?FILE_MODULE:close(Fd1),

    %% read
    ?line {ok, Fd2} = ?FILE_MODULE:open(Name1, [read]),
    ?line {ok, Marker} = io:read(Fd2, prompt),
    ?line ok = ?FILE_MODULE:close(Fd2),

    %% read and write
    ?line {ok, Fd3} = ?FILE_MODULE:open(Name1, [read, write]),
    ?line {ok, Marker} = io:read(Fd3, prompt),
    ?line ok = io:write(Fd3, Marker),
    ?line ok = ?FILE_MODULE:close(Fd3),

    %% read by default
    ?line {ok, Fd4} = ?FILE_MODULE:open(Name1, []),
    ?line {ok, Marker} = io:read(Fd4, prompt),
    ?line ok = ?FILE_MODULE:close(Fd4),

    %% read and binary
    ?line {ok, Fd5} = ?FILE_MODULE:open(Name1, [read, binary]),
    ?line {ok, Marker} = io:read(Fd5, prompt),
    ?line ok = ?FILE_MODULE:close(Fd5),

    %% read, raw
    ?line {ok, Fd6} = ?FILE_MODULE:open(Name1, [read, raw]),
    ?line {ok, [$\[]} = ?FILE_MODULE:read(Fd6, 1),
    ?line ok = ?FILE_MODULE:close(Fd6),

    %% write and sync
    case ?FILE_MODULE:open(Name1, [write, sync]) of
	{ok, Fd7} ->
	    ok = io:write(Fd7, Marker),
	    ok = io:put_chars(Fd7, ".\n"),
	    ok = ?FILE_MODULE:close(Fd7),
	    {ok, Fd8} = ?FILE_MODULE:open(Name1, [read]),
	    {ok, Marker} = io:read(Fd8, prompt),
	    ok = ?FILE_MODULE:close(Fd8);
	{error, enotsup} ->
	    %% for platforms that don't support the sync option
	    ok
    end,

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

path_open(suite) -> [];
path_open(doc) -> [];
path_open(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_path_open"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line FileName = "path_open.fil",
    ?line Name = filename:join(RootDir, FileName),
    ?line {ok,Fd1,_FullName1} =
	?FILE_MODULE:path_open(
	  [RootDir,
	   "nosuch1",
	   NewDir],FileName,write),
    ?line io:format(Fd1,"ABCDEFGH",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),

    %% locate it in the last dir
    ?line {ok,Fd2,_FullName2} =
	?FILE_MODULE:path_open(
	  ["nosuch1",
	   NewDir,
	   RootDir],FileName,read),
    ?line {ok,2} = 
	?FILE_MODULE:position(Fd2,2), "C" = io:get_chars(Fd2,'',1),
    ?line ok = ?FILE_MODULE:close(Fd2),
    %% Try a failing path
    ?line {error, enoent} = ?FILE_MODULE:path_open(
			      ["nosuch1",
			       NewDir],FileName,read),
    %% Check that it's found regardless of path, if an absolute name given
    ?line {ok,Fd3,_FullPath3} =
	?FILE_MODULE:path_open(
	  ["nosuch1",
	   NewDir],Name,read),
    ?line {ok,2} = 
	?FILE_MODULE:position(Fd3,2), "C" = io:get_chars(Fd3,'',1),
    ?line ok = ?FILE_MODULE:close(Fd3),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

close(suite) -> [];
close(doc) -> [];
close(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_close.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,read_write),
    %% Just closing it is no fun, we did that a million times already
    %% This is a common error, for code written before Erlang 4.3
    %% bacause then ?FILE_MODULE:open just returned a Pid, and not everyone
    %% really checked what they got.
    ?line {'EXIT',_Msg} = (catch ok = ?FILE_MODULE:close({ok,Fd1})),
    ?line ok = ?FILE_MODULE:close(Fd1),

    %% Try closing one more time
    ?line Val = ?FILE_MODULE:close(Fd1),
    ?line io:format("Second close gave: ~p",[Val]),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

access(suite) -> [];
access(doc) -> [];
access(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_access.fil"),
    ?line Str = "ABCDEFGH",
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd1,Str,[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    %% Check that we can't write when in read only mode
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,read),
    ?line case catch io:format(Fd2,"XXXX",[]) of
	      ok ->
		  test_server:fail({format,write});
	      _ ->
		  ok
	  end,
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {ok,Fd3} = ?FILE_MODULE:open(Name,read),
    ?line Str = io:get_line(Fd3,''),
    ?line ok = ?FILE_MODULE:close(Fd3),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%% Tests ?FILE_MODULE:read/2 and ?FILE_MODULE:write/2.

read_write(suite) -> [];
read_write(doc) -> [];
read_write(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_read_write"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line Marker = "hello, world",
    ?line MarkerB = list_to_binary(Marker),

    %% Plain file.
    ?line Name1 = filename:join(NewDir, "plain.fil"),
    ?line {ok, Fd1} = ?FILE_MODULE:open(Name1, [read, write]),
    ?line read_write_test(Fd1, Marker, []),

    %% Raw file.
    ?line Name2 = filename:join(NewDir, "raw.fil"),
    ?line {ok, Fd2} = ?FILE_MODULE:open(Name2, [read, write, raw]),
    ?line read_write_test(Fd2, Marker, []),

    %% Plain binary file.
    ?line Name3 = filename:join(NewDir, "plain-b.fil"),
    ?line {ok, Fd3} = ?FILE_MODULE:open(Name3, [read, write, binary]),
    ?line read_write_test(Fd3, MarkerB, <<>>),

    %% Raw binary file.
    ?line Name4 = filename:join(NewDir, "raw-b.fil"),
    ?line {ok, Fd4} = ?FILE_MODULE:open(Name4, [read, write, raw, binary]),
    ?line read_write_test(Fd4, MarkerB, <<>>),

    ?line test_server:timetrap_cancel(Dog),
    ok.

read_write_test(File, Marker, Empty) ->
    ?line ok = ?FILE_MODULE:write(File, Marker),
    ?line {ok, 0} = ?FILE_MODULE:position(File, 0),
    ?line {ok, Empty} = ?FILE_MODULE:read(File, 0),
    ?line {ok, Marker} = ?FILE_MODULE:read(File, 100),
    ?line eof = ?FILE_MODULE:read(File, 100),
    ?line {ok, Empty} = ?FILE_MODULE:read(File, 0),
    ?line ok = ?FILE_MODULE:close(File),
    ?line [] = flush(),
    ok.


%% Tests ?FILE_MODULE:pread/2 and ?FILE_MODULE:pwrite/2.

pread_write(suite) -> [];
pread_write(doc) -> [];
pread_write(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_pread_write"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line List = "hello, world",
    ?line Bin = list_to_binary(List),

    %% Plain file.
    ?line Name1 = filename:join(NewDir, "plain.fil"),
    ?line {ok, Fd1} = ?FILE_MODULE:open(Name1, [read, write]),
    ?line pread_write_test(Fd1, List),

    %% Raw file.
    ?line Name2 = filename:join(NewDir, "raw.fil"),
    ?line {ok, Fd2} = ?FILE_MODULE:open(Name2, [read, write, raw]),
    ?line pread_write_test(Fd2, List),

    %% Plain file. Binary mode.
    ?line Name3 = filename:join(NewDir, "plain-binary.fil"),
    ?line {ok, Fd3} = ?FILE_MODULE:open(Name3, [binary, read, write]),
    ?line pread_write_test(Fd3, Bin),

    %% Raw file. Binary mode.
    ?line Name4 = filename:join(NewDir, "raw-binary.fil"),
    ?line {ok, Fd4} = ?FILE_MODULE:open(Name4, [binary, read, write, raw]),
    ?line pread_write_test(Fd4, Bin),

    ?line test_server:timetrap_cancel(Dog),
    ok.

pread_write_test(File, Data) ->
    ?line io:format("~p:pread_write_test(~p,~p)~n", [?MODULE, File, Data]),
    ?line Size = if is_binary(Data) -> byte_size(Data);
		    is_list(Data) -> length(Data)
		 end,
    ?line I = Size + 17,
    ?line ok = ?FILE_MODULE:pwrite(File, 0, Data),
    Res = ?FILE_MODULE:pread(File, 0, I),
    ?line {ok, Data} = Res,
    ?line eof = ?FILE_MODULE:pread(File, I, 1),
    ?line ok = ?FILE_MODULE:pwrite(File, [{0, Data}, {I, Data}]),
    ?line {ok, [Data, eof, Data]} = 
	?FILE_MODULE:pread(File, [{0, Size}, {2*I, 1}, {I, Size}]),
    ?line Plist = lists:seq(21*I, 0, -I),
    ?line Pwrite = lists:map(fun(P)->{P,Data}end, Plist),
    ?line Pread = [{22*I,Size} | lists:map(fun(P)->{P,Size}end, Plist)],
    ?line Presult = [eof | lists:map(fun(_)->Data end, Plist)],
    ?line ok = ?FILE_MODULE:pwrite(File, Pwrite),
    ?line {ok, Presult} = ?FILE_MODULE:pread(File, Pread),
    ?line ok = ?FILE_MODULE:close(File),
    ?line [] = flush(),
    ok.

append(doc) -> "Test appending to a file.";
append(suite) -> [];
append(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_append"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),

    ?line First = "First line\n",
    ?line Second = "Seond lines comes here\n",
    ?line Third = "And here is the third line\n",

    %% Write a small text file.
    ?line Name1 = filename:join(NewDir, "a_file.txt"),
    ?line {ok, Fd1} = ?FILE_MODULE:open(Name1, [write]),
    ?line ok = io:format(Fd1, First, []),
    ?line ok = io:format(Fd1, Second, []),
    ?line ok = ?FILE_MODULE:close(Fd1),

    %% Open it a again and a append a line to it.
    ?line {ok, Fd2} = ?FILE_MODULE:open(Name1, [append]),
    ?line ok = io:format(Fd2, Third, []),
    ?line ok = ?FILE_MODULE:close(Fd2),

    %% Read it back and verify.
    ?line Expected = list_to_binary([First, Second, Third]),
    ?line {ok, Expected} = ?FILE_MODULE:read_file(Name1),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

open_errors(suite) -> [];
open_errors(doc) -> [];
open_errors(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line DataDir = 
	filename:dirname(
	  filename:join(?config(data_dir, Config), "x")),
    ?line DataDirSlash = DataDir++"/",
    ?line {error, E1} = ?FILE_MODULE:open(DataDir, [read]),
    ?line {error, E2} = ?FILE_MODULE:open(DataDirSlash, [read]),
    ?line {error, E3} = ?FILE_MODULE:open(DataDir, [write]),
    ?line {error, E4} = ?FILE_MODULE:open(DataDirSlash, [write]),
    ?line {eisdir,eisdir,eisdir,eisdir} = {E1,E2,E3,E4},

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

exclusive(suite) -> [];
exclusive(doc) -> "Test exclusive access to a file.";
exclusive(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line NewDir = filename:join(RootDir,
				 atom_to_list(?MODULE)
				 ++"_exclusive"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line Name = filename:join(NewDir, "ex_file.txt"),
    ?line {ok, Fd} = ?FILE_MODULE:open(Name, [write, exclusive]),
    ?line {error, eexist} = ?FILE_MODULE:open(Name, [write, exclusive]),
    ?line ok = ?FILE_MODULE:close(Fd),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


pos1(suite) -> [];
pos1(doc) -> [];
pos1(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_pos1.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd1,"ABCDEFGH",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,read),

    %% Start pos is first char
    ?line io:format("Relative positions"),
    ?line "A" = io:get_chars(Fd2,'',1),
    ?line {ok,2} = ?FILE_MODULE:position(Fd2,{cur,1}), 
    ?line "C" = io:get_chars(Fd2,'',1),
    ?line {ok,0} = ?FILE_MODULE:position(Fd2,{cur,-3}), 
    ?line "A" = io:get_chars(Fd2,'',1),
    %% Backwards from first char should be an error
    ?line {ok,0} = ?FILE_MODULE:position(Fd2,{cur,-1}),
    ?line {error, einval} = ?FILE_MODULE:position(Fd2,{cur,-1}),
    %% Reset position and move again
    ?line {ok,0} = ?FILE_MODULE:position(Fd2,0),
    ?line {ok,2} = ?FILE_MODULE:position(Fd2,{cur,2}), 
    ?line "C" = io:get_chars(Fd2,'',1),
    %% Go a lot forwards
    ?line {ok,13} = ?FILE_MODULE:position(Fd2,{cur,10}), 
    ?line eof = io:get_chars(Fd2,'',1),

    %% Try some fixed positions
    ?line io:format("Fixed positions"),
    ?line {ok,8} = 
	?FILE_MODULE:position(Fd2,8), eof = io:get_chars(Fd2,'',1),
    ?line {ok,8} = 
	?FILE_MODULE:position(Fd2,cur), eof = io:get_chars(Fd2,'',1),
    ?line {ok,7} = 
	?FILE_MODULE:position(Fd2,7), "H" = io:get_chars(Fd2,'',1),
    ?line {ok,0} = 
	?FILE_MODULE:position(Fd2,0), "A" = io:get_chars(Fd2,'',1),
    ?line {ok,3} = 
	?FILE_MODULE:position(Fd2,3), "D" = io:get_chars(Fd2,'',1),
    ?line {ok,12} = 
	?FILE_MODULE:position(Fd2,12), eof = io:get_chars(Fd2,'',1),
    ?line {ok,3} = 
	?FILE_MODULE:position(Fd2,3), "D" = io:get_chars(Fd2,'',1),
    %% Try the {bof,X} notation
    ?line {ok,3} = ?FILE_MODULE:position(Fd2,{bof,3}),
    ?line "D" = io:get_chars(Fd2,'',1),

    %% Try eof positions
    ?line io:format("EOF positions"),
    ?line {ok,8} = 
	?FILE_MODULE:position(Fd2,{eof,0}), eof=io:get_chars(Fd2,'',1),
    ?line {ok,7} = 
	?FILE_MODULE:position(Fd2,{eof,-1}),
    ?line "H" = io:get_chars(Fd2,'',1),
    ?line {ok,0} = 
	?FILE_MODULE:position(Fd2,{eof,-8}), "A"=io:get_chars(Fd2,'',1),
    ?line {error, einval} = ?FILE_MODULE:position(Fd2,{eof,-9}),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

pos2(suite) -> [];
pos2(doc) -> [];
pos2(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_pos2.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd1,"ABCDEFGH",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,read),
    ?line {error, einval} = ?FILE_MODULE:position(Fd2,-1),

    %% Make sure that we still can search after an error.
    ?line {ok,0} = ?FILE_MODULE:position(Fd2, 0),
    ?line {ok,3} = ?FILE_MODULE:position(Fd2, {bof,3}),
    ?line "D" = io:get_chars(Fd2,'',1),

    ?line [] = flush(),
    ?line io:format("DONE"),
    ?line test_server:timetrap_cancel(Dog),
    ok.


file_info_basic_file(suite) -> [];
file_info_basic_file(doc) -> [];
file_info_basic_file(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir, Config),

    %% Create a short file.
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_basic_test.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name, write),
    ?line io:put_chars(Fd1, "foo bar"),
    ?line ok = ?FILE_MODULE:close(Fd1),

    %% Test that the file has the expected attributes.
    %% The times are tricky, so we will save them to a separate test case.
    ?line {ok,#file_info{size=Size,type=Type,access=Access,
			 atime=AccessTime,mtime=ModifyTime}} =
	?FILE_MODULE:read_file_info(Name),
    ?line io:format("Access ~p, Modify ~p", [AccessTime, ModifyTime]),
    ?line Size = 7,
    ?line Type = regular,
    ?line read_write = Access,
    ?line true = abs(time_dist(filter_atime(AccessTime, Config),
			       filter_atime(ModifyTime,
					    Config))) < 2,
    ?line all_integers(tuple_to_list(AccessTime) ++ tuple_to_list(ModifyTime)),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

file_info_basic_directory(suite) -> [];
file_info_basic_directory(doc) -> [];
file_info_basic_directory(Config) when is_list(Config) ->
    Dog = test_server:timetrap(test_server:seconds(5)),

    %% Note: filename:join/1 removes any trailing slash,
    %% which is essential for ?FILE_MODULE:file_info/1 to work on
    %% platforms such as Windows95.
    RootDir = filename:join([?config(priv_dir, Config)]),

    %% Test that the RootDir directory has the expected attributes.
    test_directory(RootDir, read_write),

    %% Note that on Windows file systems, 
    %% "/" or "c:/" are *NOT* directories.
    %% Therefore, test that ?FILE_MODULE:file_info/1 behaves as if they were
    %% directories.
    case os:type() of
        {win32, _} ->
            ?line test_directory("/", read_write),
            ?line test_directory("c:/", read_write),
            ?line test_directory("c:\\", read_write);
        _ ->
            ?line test_directory("/", read)
    end,
    test_server:timetrap_cancel(Dog).

test_directory(Name, ExpectedAccess) ->
    ?line {ok,#file_info{size=Size,type=Type,access=Access,
			 atime=AccessTime,mtime=ModifyTime}} =
	?FILE_MODULE:read_file_info(Name),
    ?line io:format("Testing directory ~s", [Name]),
    ?line io:format("Directory size is ~p", [Size]),
    ?line io:format("Access ~p", [Access]),
    ?line io:format("Access time ~p; Modify time~p", 
		    [AccessTime, ModifyTime]),
    ?line Type = directory,
    ?line Access = ExpectedAccess,
    ?line all_integers(tuple_to_list(AccessTime) ++ tuple_to_list(ModifyTime)),
    ?line [] = flush(),
    ok.

all_integers([{A,B,C}|T]) ->
    all_integers([A,B,C|T]);
all_integers([Int|Rest]) when is_integer(Int) ->
    ?line all_integers(Rest);
all_integers([]) -> ok.

%% Try something nonexistent.

file_info_bad(suite) -> [];
file_info_bad(doc) -> [];
file_info_bad(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = filename:join([?config(priv_dir, Config)]),
    ?line {error, enoent} = 
	?FILE_MODULE:read_file_info(
	  filename:join(RootDir, 
			atom_to_list(?MODULE)++ "_nonexistent")),
    ?line {error, enoent} = ?FILE_MODULE:read_file_info(""),
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%% Test that the file times behave as they should.

file_info_times(suite) -> [];
file_info_times(doc) -> [];
file_info_times(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(60)),
    %% We have to try this twice, since if the test runs across the change
    %% of a month the time diff calculations will fail. But it won't happen
    %% if you run it twice in succession.
    ?line test_server:m_out_of_n(
	    1,2,
	    fun() -> ?line file_info_int(Config) end),
    ?line test_server:timetrap_cancel(Dog),
    ok.

file_info_int(Config) ->
    %% Note: filename:join/1 removes any trailing slash,
    %% which is essential for ?FILE_MODULE:file_info/1 to work on
    %% platforms such as Windows95.

    ?line RootDir = filename:join([?config(priv_dir, Config)]),
    ?line test_server:format("RootDir = ~p", [RootDir]),

    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_file_info.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    ?line io:put_chars(Fd1,"foo"),

    %% check that the file got a modify date max a few seconds away from now
    ?line {ok,#file_info{type=regular,atime=AccTime1,mtime=ModTime1}} =
	?FILE_MODULE:read_file_info(Name),
    ?line Now = erlang:localtime(), %???
    ?line io:format("Now ~p",[Now]),
    ?line io:format("Open file Acc ~p Mod ~p",[AccTime1,ModTime1]),
    ?line true = abs(time_dist(filter_atime(Now, Config),
			       filter_atime(AccTime1,
					    Config))) < 8,
    ?line true = abs(time_dist(Now,ModTime1)) < 8,

    %% Sleep until we can be sure the seconds value has changed.
    %% Note: FAT-based filesystem (like on Windows 95) have
    %% a resolution of 2 seconds.
    ?line test_server:sleep(test_server:seconds(2.2)),

    %% close the file, and watch the modify date change
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line {ok,#file_info{size=Size,type=regular,access=Access,
			 atime=AccTime2,mtime=ModTime2}} =
	?FILE_MODULE:read_file_info(Name),
    ?line io:format("Closed file Acc ~p Mod ~p",[AccTime2,ModTime2]),
    ?line true = time_dist(ModTime1,ModTime2) >= 0,

    %% this file is supposed to be binary, so it'd better keep it's size
    ?line Size = 3,
    ?line Access = read_write,

    %% Do some directory checking
    ?line {ok,#file_info{size=DSize,type=directory,access=DAccess,
			 atime=AccTime3,mtime=ModTime3}} =
	?FILE_MODULE:read_file_info(RootDir),
    %% this dir was modified only a few secs ago
    ?line io:format("Dir Acc ~p; Mod ~p; Now ~p", [AccTime3, ModTime3, Now]),
    ?line true = abs(time_dist(Now,ModTime3)) < 5,
    ?line DAccess = read_write,
    ?line io:format("Dir size is ~p",[DSize]),

    ?line [] = flush(),
    ok.

%% Filter access times, to copy with a deficiency of FAT file systems
%% (on Windows): The access time is actually only a date.

filter_atime(Atime, Config) ->
    case lists:member(no_access_time, Config) of
	true ->
	    case Atime of
	    	{Date, _} ->
	    	   {Date, {0, 0, 0}};
		{Y, M, D, _, _, _} ->
		   {Y, M, D, 0, 0, 0}
	    end;
	false ->
	    Atime
    end.

%% Test the write_file_info/2 function.

file_write_file_info(suite) -> [];
file_write_file_info(doc) -> [];
file_write_file_info(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = get_good_directory(Config),
    ?line test_server:format("RootDir = ~p", [RootDir]),

    %% Set the file to read only AND update the file times at the same time.
    %% (This used to fail on Windows NT/95 for a local filesystem.)
    %% Note: Seconds must be even; see note in file_info_times/1.

    ?line Name1 = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_write_file_info_ro"),
    ?line ok = ?FILE_MODULE:write_file(Name1, "hello"),
    ?line Time = {{1997, 01, 02}, {12, 35, 42}},
    ?line Info = #file_info{mode=8#400, atime=Time, mtime=Time, ctime=Time},
    ?line ok = ?FILE_MODULE:write_file_info(Name1, Info),

    %% Read back the times.

    ?line {ok, ActualInfo} = ?FILE_MODULE:read_file_info(Name1),
    ?line #file_info{mode=_Mode, atime=ActAtime, mtime=Time,
		     ctime=ActCtime} = ActualInfo,
    ?line FilteredAtime = filter_atime(Time, Config),
    ?line FilteredAtime = filter_atime(ActAtime, Config),
    ?line case os:type() of
	      {win32, _} ->
		  %% On Windows, "ctime" means creation time and it can
		  %% be set.
		  ActCtime = Time;
	      _ ->
		  ok
	  end,
    ?line {error, eacces} = ?FILE_MODULE:write_file(Name1, "hello again"),

    %% Make the file writable again.

    ?line ?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#600}),
    ?line ok = ?FILE_MODULE:write_file(Name1, "hello again"),

    %% And unwritable.
    ?line ?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#400}),
    ?line {error, eacces} = ?FILE_MODULE:write_file(Name1, "hello again"),

    %% Write the times again.
    %% Note: Seconds must be even; see note in file_info_times/1.

    ?line NewTime = {{1997, 02, 15}, {13, 18, 20}},
    ?line NewInfo = #file_info{atime=NewTime, mtime=NewTime, ctime=NewTime},
    ?line ok = ?FILE_MODULE:write_file_info(Name1, NewInfo),
    ?line {ok, ActualInfo2} = ?FILE_MODULE:read_file_info(Name1),
    ?line #file_info{atime=NewActAtime, mtime=NewTime,
		     ctime=NewActCtime} = ActualInfo2,
    ?line NewFilteredAtime = filter_atime(NewTime, Config),
    ?line NewFilteredAtime = filter_atime(NewActAtime, Config),
    ?line case os:type() of
	      {win32, _} -> NewActCtime = NewTime;
	      _ -> ok
	  end,

    %% The file should still be unwritable.
    ?line {error, eacces} = ?FILE_MODULE:write_file(Name1, "hello again"),

    %% Make the file writeable again, so that we can remove the
    %% test suites ... :-)
    ?line ?FILE_MODULE:write_file_info(Name1, #file_info{mode=8#600}),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%% Returns a directory on a file system that has correct file times.

get_good_directory(Config) ->
    ?line ?config(priv_dir, Config).


consult1(suite) -> [];
consult1(doc) -> [];
consult1(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_consult.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    %% note that there is no final \n (only a space)
    ?line io:format(Fd1,
		    "{this,[is,1.0],'journey'}.\n\"into\". (sound). ",
		    []),
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line {ok,[{this,[is,1.0],journey},"into",sound]} = 
	?FILE_MODULE:consult(Name),

    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,write),
    %% note the missing double quote
    ?line io:format(
	    Fd2,"{this,[is,1.0],'journey'}.\n \"into. (sound). ",[]),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {error, {_, _, _} = Msg} = ?FILE_MODULE:consult(Name),
    ?line io:format("Errmsg: ~p",[Msg]),

    ?line {error, enoent} = ?FILE_MODULE:consult(Name ++ ".nonexistent"),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

path_consult(suite) -> [];
path_consult(doc) -> [];
path_consult(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line FileName = atom_to_list(?MODULE)++"_path_consult.fil",
    ?line Name = filename:join(RootDir, FileName),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd1,"{this,is,a,journey,into,sound}.\n",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    %% File last in path
    ?line {ok,[{this,is,a,journey,into,sound}],Dir} =
	?FILE_MODULE:path_consult(
	  [filename:join(RootDir, "dir1"),
	   filename:join(RootDir, ".."),
	   filename:join(RootDir, "dir2"),
	   RootDir], FileName),
    ?line true = lists:prefix(RootDir,Dir),

    %% While maybe not an error, it may be worth noting that
    %% when the full path to a file is given, it's always found
    %% regardless of the contents of the path
    ?line {ok,_,_} = ?FILE_MODULE:path_consult(["nosuch1","nosuch2"],Name),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.


eval1(suite) -> [];
eval1(doc) -> [];
eval1(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)++"_eval.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    %% note that there is no final \n (only a space)
    ?line io:format(Fd1,"put(evaluated_ok,\ntrue). ",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line ok = ?FILE_MODULE:eval(Name),
    ?line true = get(evaluated_ok),
    
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,write),
    %% note that there is no final \n (only a space)
    ?line io:format(Fd2,"put(evaluated_ok,\nR). ",[]),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line ok = ?FILE_MODULE:eval(
		  Name, 
		  erl_eval:add_binding('R', true, erl_eval:new_bindings())),
    ?line true = get(evaluated_ok),
    
    ?line {ok,Fd3} = ?FILE_MODULE:open(Name,write),
    %% garbled
    ?line io:format(Fd3,"puGARBLED-GARBLED\ntrue). ",[]),
    ?line ok = ?FILE_MODULE:close(Fd3),
    ?line {error, {_, _, _} = Msg} = ?FILE_MODULE:eval(Name),
    ?line io:format("Errmsg1: ~p",[Msg]),
    
    ?line {error, enoent} = ?FILE_MODULE:eval(Name ++ ".nonexistent"),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

path_eval(suite) -> [];
path_eval(doc) -> [];
path_eval(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line FileName = atom_to_list(?MODULE)++"_path_eval.fil",
    ?line Name = filename:join(RootDir, FileName),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd1,"put(evaluated_ok,true).\n",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    %% File last in path
    ?line {ok,Dir} =
	?FILE_MODULE:path_eval(
	  [filename:join(RootDir, "dir1"),
	   filename:join(RootDir, ".."),
	   filename:join(RootDir, "dir2"),
	   RootDir],FileName),
    ?line true = get(evaluated_ok),
    ?line true = lists:prefix(RootDir,Dir),
    
    %% While maybe not an error, it may be worth noting that
    %% when the full path to a file is given, it's always found
    %% regardless of the contents of the path
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd2,"put(evaluated_ok,R).\n",[]),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {ok,_} = ?FILE_MODULE:path_eval(
		      ["nosuch1","nosuch2"],
		      Name,
		      erl_eval:add_binding('R', true, erl_eval:new_bindings())),
    
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.


script1(suite) -> [];
script1(doc) -> "";
script1(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)++"_script.fil"),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    %% note that there is no final \n (only a space)
    ?line io:format(Fd1,"A = 11,\nB = 6,\nA+B. ",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line {ok,17} = ?FILE_MODULE:script(Name),
    
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,write),
    %% note that there is no final \n (only a space)
    ?line io:format(Fd2,"A = 11,\nA+B. ",[]),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {ok,17} = ?FILE_MODULE:script(
		       Name, 
		       erl_eval:add_binding('B', 6, erl_eval:new_bindings())),
    
    ?line {ok,Fd3} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd3,"A = 11,\nB = six,\nA+B. ",[]),
    ?line ok = ?FILE_MODULE:close(Fd3),
    ?line {error, {_, _, _} = Msg} = ?FILE_MODULE:script(Name),
    ?line io:format("Errmsg1: ~p",[Msg]),

    ?line {error, enoent} = ?FILE_MODULE:script(Name ++ ".nonexistent"),
    
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.
    
path_script(suite) -> [];
path_script(doc) -> [];
path_script(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line FileName = atom_to_list(?MODULE)++"_path_script.fil",
    ?line Name = filename:join(RootDir, FileName),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd1,"A = 11,\nB = 6,\nA+B.\n",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    %% File last in path
    ?line {ok, 17, Dir} =
	?FILE_MODULE:path_script(
	   [filename:join(RootDir, "dir1"),
	    filename:join(RootDir, ".."),
	    filename:join(RootDir, "dir2"),
	    RootDir],FileName),
    ?line true = lists:prefix(RootDir,Dir),
    
    %% While maybe not an error, it may be worth noting that
    %% when the full path to a file is given, it's always found
    %% regardless of the contents of the path
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name,write),
    ?line io:format(Fd2,"A = 11,\nA+B.",[]),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {ok, 17, Dir} = 
	?FILE_MODULE:path_script(
	   ["nosuch1","nosuch2"],
	   Name,
	   erl_eval:add_binding('B', 6, erl_eval:new_bindings())),
    
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

    

truncate(suite) -> [];
truncate(doc) -> [];
truncate(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_truncate.fil"),

    %% Create a file with some data.
    ?line MyData = "0123456789abcdefghijklmnopqrstuvxyz",
    ?line ok = ?FILE_MODULE:write_file(Name, MyData),

    %% Truncate the file to 10 characters.
    ?line {ok, Fd} = ?FILE_MODULE:open(Name, read_write),
    ?line {ok, 10} = ?FILE_MODULE:position(Fd, 10),
    ?line ok = ?FILE_MODULE:truncate(Fd),
    ?line ok = ?FILE_MODULE:close(Fd),

    %% Read back the file and check that it has been truncated.
    ?line Expected = list_to_binary("0123456789"),
    ?line {ok, Expected} = ?FILE_MODULE:read_file(Name),

    %% Open the file read only and verify that it is not possible to
    %% truncate it, OTP-1960
    ?line {ok, Fd2} = ?FILE_MODULE:open(Name, read),
    ?line {ok, 5} = ?FILE_MODULE:position(Fd2, 5),
    ?line {error, _} = ?FILE_MODULE:truncate(Fd2),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.


datasync(suite) -> [];
datasync(doc) -> "Tests that ?FILE_MODULE:datasync/1 at least doesn't crash.";
datasync(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line PrivDir = ?config(priv_dir, Config),
    ?line Sync = filename:join(PrivDir,
			       atom_to_list(?MODULE)
			       ++"_sync.fil"),

    %% Raw open.
    ?line {ok, Fd} = ?FILE_MODULE:open(Sync, [write, raw]),
    ?line ok = ?FILE_MODULE:datasync(Fd),
    ?line ok = ?FILE_MODULE:close(Fd),

    %% Ordinary open.
    ?line {ok, Fd2} = ?FILE_MODULE:open(Sync, [write]),
    ?line ok = ?FILE_MODULE:datasync(Fd2),
    ?line ok = ?FILE_MODULE:close(Fd2),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.


sync(suite) -> [];
sync(doc) -> "Tests that ?FILE_MODULE:sync/1 at least doesn't crash.";
sync(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line PrivDir = ?config(priv_dir, Config),
    ?line Sync = filename:join(PrivDir, 
			       atom_to_list(?MODULE)
			       ++"_sync.fil"),

    %% Raw open.
    ?line {ok, Fd} = ?FILE_MODULE:open(Sync, [write, raw]),
    ?line ok = ?FILE_MODULE:sync(Fd),
    ?line ok = ?FILE_MODULE:close(Fd),

    %% Ordinary open.
    ?line {ok, Fd2} = ?FILE_MODULE:open(Sync, [write]),
    ?line ok = ?FILE_MODULE:sync(Fd2),
    ?line ok = ?FILE_MODULE:close(Fd2),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

advise(suite) -> [];
advise(doc) -> "Tests that ?FILE_MODULE:advise/4 at least doesn't crash.";
advise(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line PrivDir = ?config(priv_dir, Config),
    ?line Advise = filename:join(PrivDir,
			       atom_to_list(?MODULE)
			       ++"_advise.fil"),

    Line1 = "Hello\n",
    Line2 = "World!\n",

    ?line {ok, Fd} = ?FILE_MODULE:open(Advise, [write]),
    ?line ok = ?FILE_MODULE:advise(Fd, 0, 0, normal),
    ?line ok = io:format(Fd, "~s", [Line1]),
    ?line ok = io:format(Fd, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd),

    ?line {ok, Fd2} = ?FILE_MODULE:open(Advise, [write]),
    ?line ok = ?FILE_MODULE:advise(Fd2, 0, 0, random),
    ?line ok = io:format(Fd2, "~s", [Line1]),
    ?line ok = io:format(Fd2, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd2),

    ?line {ok, Fd3} = ?FILE_MODULE:open(Advise, [write]),
    ?line ok = ?FILE_MODULE:advise(Fd3, 0, 0, sequential),
    ?line ok = io:format(Fd3, "~s", [Line1]),
    ?line ok = io:format(Fd3, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd3),

    ?line {ok, Fd4} = ?FILE_MODULE:open(Advise, [write]),
    ?line ok = ?FILE_MODULE:advise(Fd4, 0, 0, will_need),
    ?line ok = io:format(Fd4, "~s", [Line1]),
    ?line ok = io:format(Fd4, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd4),

    ?line {ok, Fd5} = ?FILE_MODULE:open(Advise, [write]),
    ?line ok = ?FILE_MODULE:advise(Fd5, 0, 0, dont_need),
    ?line ok = io:format(Fd5, "~s", [Line1]),
    ?line ok = io:format(Fd5, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd5),

    ?line {ok, Fd6} = ?FILE_MODULE:open(Advise, [write]),
    ?line ok = ?FILE_MODULE:advise(Fd6, 0, 0, no_reuse),
    ?line ok = io:format(Fd6, "~s", [Line1]),
    ?line ok = io:format(Fd6, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd6),

    ?line {ok, Fd7} = ?FILE_MODULE:open(Advise, [write]),
    ?line {error, einval} = ?FILE_MODULE:advise(Fd7, 0, 0, bad_advise),
    ?line ok = ?FILE_MODULE:close(Fd7),

    %% test write without advise, then a read after an advise
    ?line {ok, Fd8} = ?FILE_MODULE:open(Advise, [write]),
    ?line ok = io:format(Fd8, "~s", [Line1]),
    ?line ok = io:format(Fd8, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd8),
    ?line {ok, Fd9} = ?FILE_MODULE:open(Advise, [read]),
    Offset = 0,
    %% same as a 0 length in some implementations
    Length = length(Line1) + length(Line2),
    ?line ok = ?FILE_MODULE:advise(Fd9, Offset, Length, sequential),
    ?line {ok, Line1} = ?FILE_MODULE:read_line(Fd9),
    ?line {ok, Line2} = ?FILE_MODULE:read_line(Fd9),
    ?line eof = ?FILE_MODULE:read_line(Fd9),
    ?line ok = ?FILE_MODULE:close(Fd9),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

allocate(suite) -> [];
allocate(doc) -> "Tests that ?FILE_MODULE:allocate/3 at least doesn't crash.";
allocate(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line PrivDir = ?config(priv_dir, Config),
    ?line Allocate = filename:join(PrivDir,
			       atom_to_list(?MODULE)
			       ++"_allocate.fil"),

    Line1 = "Hello\n",
    Line2 = "World!\n",

    ?line {ok, Fd} = ?FILE_MODULE:open(Allocate, [write, binary]),
    allocate_and_assert(Fd, 1, iolist_size([Line1, Line2])),
    ?line ok = io:format(Fd, "~s", [Line1]),
    ?line ok = io:format(Fd, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd),

    ?line {ok, Fd2} = ?FILE_MODULE:open(Allocate, [write, binary]),
    allocate_and_assert(Fd2, 1, iolist_size(Line1)),
    ?line ok = io:format(Fd2, "~s", [Line1]),
    ?line ok = io:format(Fd2, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd2),

    ?line {ok, Fd3} = ?FILE_MODULE:open(Allocate, [write, binary]),
    allocate_and_assert(Fd3, 1, iolist_size(Line1) + 1),
    ?line ok = io:format(Fd3, "~s", [Line1]),
    ?line ok = io:format(Fd3, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd3),

    ?line {ok, Fd4} = ?FILE_MODULE:open(Allocate, [write, binary]),
    allocate_and_assert(Fd4, 1, 4 * iolist_size([Line1, Line2])),
    ?line ok = io:format(Fd4, "~s", [Line1]),
    ?line ok = io:format(Fd4, "~s", [Line2]),
    ?line ok = ?FILE_MODULE:close(Fd4),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

allocate_and_assert(Fd, Offset, Length) ->
    % Just verify that calls to ?PRIM_FILE:allocate/3 don't crash or have
    % any other negative side effect. We can't really asssert against a
    % specific return value, because support for file space pre-allocation
    % depends on the OS, OS version and underlying filesystem.
    %
    % The Linux kernel added support for fallocate() in version 2.6.23,
    % which currently works only for the ext4, ocfs2, xfs and btrfs file
    % systems. posix_fallocate() is available in glibc as of version
    % 2.1.94, but it was buggy until glibc version 2.7.
    %
    % Mac OS X, as of version 10.3, supports the fcntl operation F_PREALLOCATE.
    %
    % Solaris supports posix_fallocate() but only for the UFS file system
    % apparently (not supported for ZFS).
    %
    % FreeBSD 9.0 is the first FreeBSD release supporting posix_fallocate().
    %
    % For Windows there's apparently no way to pre-allocate file space, at
    % least with same semantics as posix_fallocate(), fallocate() and
    % fcntl F_PREALLOCATE.
    Result = ?FILE_MODULE:allocate(Fd, Offset, Length),
    case os:type() of
        {win32, _} ->
            ?line {error, enotsup} = Result;
        _ ->
            ?line _ = Result
    end.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

delete(suite) -> [];
delete(doc) -> [];
delete(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line Name = filename:join(RootDir, 
			       atom_to_list(?MODULE)
			       ++"_delete.fil"),
    ?line {ok, Fd1} = ?FILE_MODULE:open(Name, write),
    ?line io:format(Fd1,"ok.\n",[]),
    ?line ok = ?FILE_MODULE:close(Fd1),
    %% Check that the file is readable
    ?line {ok, Fd2} = ?FILE_MODULE:open(Name, read),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line ok = ?FILE_MODULE:delete(Name),
    %% Check that the file is not readable anymore
    ?line {error, _} = ?FILE_MODULE:open(Name, read),
    %% Try deleting a nonexistent file
    ?line {error, enoent} = ?FILE_MODULE:delete(Name),
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

rename(suite) ->[];
rename(doc) ->[];
rename(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line FileName1 = atom_to_list(?MODULE)++"_rename.fil",
    ?line FileName2 = atom_to_list(?MODULE)++"_rename.ful",
    ?line Name1 = filename:join(RootDir, FileName1),
    ?line Name2 = filename:join(RootDir, FileName2),
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name1,write),
    ?line ok = ?FILE_MODULE:close(Fd1),
    %% Rename, and check that id really changed name
    ?line ok = ?FILE_MODULE:rename(Name1,Name2),
    ?line {error, _} = ?FILE_MODULE:open(Name1,read),
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name2,read),
    ?line ok = ?FILE_MODULE:close(Fd2),
    %% Try renaming something to itself
    ?line ok = ?FILE_MODULE:rename(Name2,Name2),
    %% Try renaming something that doesn't exist
    ?line {error, enoent} = ?FILE_MODULE:rename(Name1,Name2),
    %% Try renaming to something else than a string
    ?line {error, badarg} = ?FILE_MODULE:rename(Name1,{foo,bar}),
    
    %% Move between directories
    ?line DirName1 = filename:join(RootDir,
				   atom_to_list(?MODULE)
				   ++"_rename_dir"),
    ?line DirName2 = filename:join(RootDir,
				   atom_to_list(?MODULE)
				   ++"_second_rename_dir"),
    ?line Name1foo = filename:join(DirName1, "foo.fil"),
    ?line Name2foo = filename:join(DirName2, "foo.fil"),
    ?line Name2bar = filename:join(DirName2, "bar.dir"),
    ?line ok = ?FILE_MODULE:make_dir(DirName1),
    %% The name has to include the full file name, path in not enough
    ?line expect({error, eisdir}, {error, eexist}, 
		 ?FILE_MODULE:rename(Name2,DirName1)),
    ?line ok = ?FILE_MODULE:rename(Name2, Name1foo),
    %% Now rename the directory
    ?line ok = ?FILE_MODULE:rename(DirName1,DirName2),
    %% And check that the file is there now
    ?line {ok,Fd3} = ?FILE_MODULE:open(Name2foo, read),
    ?line ok = ?FILE_MODULE:close(Fd3),
    %% Try some dirty things now: move the directory into itself
    ?line {error, Msg1} = ?FILE_MODULE:rename(DirName2, Name2bar),
    ?line io:format("Errmsg1: ~p",[Msg1]),
    %% move dir into a file in itself
    ?line {error, Msg2} = ?FILE_MODULE:rename(DirName2, Name2foo),
    ?line io:format("Errmsg2: ~p",[Msg2]),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

names(suite) -> [];
names(doc) -> [];
names(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(5)),
    ?line RootDir = ?config(priv_dir,Config),
    ?line FileName = "foo1.fil",
    ?line Name1 = filename:join(RootDir, FileName),
    ?line Name2 = [RootDir,"/","foo1",".","fil"],
    ?line Name3 = [RootDir,"/",foo,$1,[[[],[],'.']],"f",il],
    ?line Name4 = list_to_atom(Name1),
    ?line {ok,Fd0} = ?FILE_MODULE:open(Name1,write),
    ?line ok = ?FILE_MODULE:close(Fd0),

    %% Try some file names
    ?line {ok,Fd1} = ?FILE_MODULE:open(Name1,read),
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line {ok,Fd2f} = ?FILE_MODULE:open(lists:flatten(Name2),read),
    ?line ok = ?FILE_MODULE:close(Fd2f),
    ?line {ok,Fd2} = ?FILE_MODULE:open(Name2,read),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {ok,Fd3} = ?FILE_MODULE:open(Name3,read),
    ?line ok = ?FILE_MODULE:close(Fd3),
    ?line {ok,Fd4} = ?FILE_MODULE:open(Name4,read),
    ?line ok = ?FILE_MODULE:close(Fd4),

    %% Try some path names
    ?line Path1 = RootDir,
    ?line Path2 = [RootDir],
    ?line Path3 = ['',[],[RootDir,[[]]]],
    ?line Path4 = list_to_atom(Path1),
    ?line {ok,Fd11,_} = ?FILE_MODULE:path_open([Path1],FileName,read),
    ?line ok = ?FILE_MODULE:close(Fd11),
    ?line {ok,Fd12,_} = ?FILE_MODULE:path_open([Path2],FileName,read),
    ?line ok = ?FILE_MODULE:close(Fd12),
    ?line {ok,Fd13,_} = ?FILE_MODULE:path_open([Path3],FileName,read),
    ?line ok = ?FILE_MODULE:close(Fd13),
    ?line {ok,Fd14,_} = ?FILE_MODULE:path_open([Path4],FileName,read),
    ?line ok = ?FILE_MODULE:close(Fd14),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


e_delete(suite) -> [];
e_delete(doc) -> [];
e_delete(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line Base = filename:join(RootDir, 
			       atom_to_list(?MODULE)++"_e_delete"),
    ?line ok = ?FILE_MODULE:make_dir(Base),

    %% Delete a non-existing file.
    ?line {error, enoent} = 
	?FILE_MODULE:delete(filename:join(Base, "non_existing")),

    %% Delete a directory.
    ?line {error, eperm} = ?FILE_MODULE:delete(Base),

    %% Use a path-name with a non-directory component.
    ?line Afile = filename:join(Base, "a_file"),
    ?line ok = ?FILE_MODULE:write_file(Afile, "hello\n"),
    ?line {error, E} = 
	expect({error, enotdir}, {error, enoent}, 
	       ?FILE_MODULE:delete(filename:join(Afile, "another_file"))),
    ?line io:format("Result: ~p~n", [E]),

    %% No permission.
    ?line case os:type() of
		{win32, _} ->
		  %% Remove a character device.
		  ?line {error, eacces} = ?FILE_MODULE:delete("nul");
		_ ->
		  ?line ?FILE_MODULE:write_file_info(
			   Base, #file_info {mode=0}),
		  ?line {error, eacces} = ?FILE_MODULE:delete(Afile),
		  ?line ?FILE_MODULE:write_file_info(
			   Base, #file_info {mode=8#600})
	  end,

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%%% FreeBSD gives EEXIST when renaming a file to an empty dir, although the
%%% manual page can be interpreted as saying that EISDIR should be given.
%%% (What about FreeBSD? We store our nightly build results on a FreeBSD
%%% file system, that's what.)

e_rename(suite) -> [];
e_rename(doc) -> [];
e_rename(Config) when is_list(Config) ->
    Dog = test_server:timetrap(test_server:seconds(10)),
    RootDir = ?config(priv_dir, Config),
    Base = filename:join(RootDir,
	atom_to_list(?MODULE)++"_e_rename"),
    ok = ?FILE_MODULE:make_dir(Base),

    %% Create an empty directory.
    EmptyDir = filename:join(Base, "empty_dir"),
    ok = ?FILE_MODULE:make_dir(EmptyDir),

    %% Create a non-empty directory.
    NonEmptyDir = filename:join(Base, "non_empty_dir"),
    ok = ?FILE_MODULE:make_dir(NonEmptyDir),
    ok = ?FILE_MODULE:write_file(
	filename:join(NonEmptyDir, "a_file"),
	"hello\n"),

    %% Create another non-empty directory.
    ADirectory = filename:join(Base, "a_directory"),
    ok = ?FILE_MODULE:make_dir(ADirectory),
    ok = ?FILE_MODULE:write_file(
	filename:join(ADirectory, "a_file"),
	"howdy\n\n"),

    %% Create a data file.
    File = filename:join(Base, "just_a_file"),
    ok = ?FILE_MODULE:write_file(File, "anything goes\n\n"),

    %% Move an existing directory to a non-empty directory.
    {error, eexist} = ?FILE_MODULE:rename(ADirectory, NonEmptyDir),

    %% Move a root directory.
    {error, einval} = ?FILE_MODULE:rename("/", "arne"),

    %% Move Base into Base/new_name.
    {error, einval} = 
    ?FILE_MODULE:rename(Base, filename:join(Base, "new_name")),

    %% Overwrite a directory with a file.
    expect({error, eexist}, %FreeBSD (?)
	{error, eisdir},
	?FILE_MODULE:rename(File, EmptyDir)),
    expect({error, eexist}, %FreeBSD (?)
	{error, eisdir},
	?FILE_MODULE:rename(File, NonEmptyDir)),

    %% Move a non-existing file.
    NonExistingFile = filename:join(Base, "non_existing_file"),
    {error, enoent} = ?FILE_MODULE:rename(NonExistingFile, NonEmptyDir),

    %% Overwrite a file with a directory.
    expect({error, eexist}, %FreeBSD (?)
	{error, enotdir},
	?FILE_MODULE:rename(ADirectory, File)),

    %% Move a file to another filesystem.
    %% XXX - This test case is bogus. We cannot be guaranteed that
    %%       the source and destination are on 
    %%       different filesystems.
    %%
    %% XXX - Gross hack!
    Comment = case os:type() of
	{unix, _} ->
	    OtherFs = "/tmp",
	    NameOnOtherFs = filename:join(OtherFs, filename:basename(File)),
	    {ok, Com} = case ?FILE_MODULE:rename(File, NameOnOtherFs) of
		{error, exdev} ->
		    %% The file could be in 
		    %% the same filesystem!
		    {ok, ok};
		ok ->
		    {ok, {comment, 
			    "Moving between filesystems "
			    "suceeded, files are probably "
			    "in the same filesystem!"}};
		{error, eperm} ->
		    {ok, {comment, "SBS! You don't "
			    "have the permission to do "
			    "this test!"}};
		Else ->
		    Else
	    end,
	    Com;
	{win32, _} ->
	    %% At least Windows NT can 
	    %% successfully move a file to
	    %% another drive.
	    ok;
	{ose, _} ->
	    %% disabled for now
	    ok
    end,
    [] = flush(),
    test_server:timetrap_cancel(Dog),
    Comment.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

e_make_dir(suite) -> [];
e_make_dir(doc) -> [];
e_make_dir(Config) when is_list(Config) ->
    Dog = test_server:timetrap(test_server:seconds(10)),
    RootDir = ?config(priv_dir, Config),
    Base = filename:join(RootDir, 
          	       atom_to_list(?MODULE)++"_e_make_dir"),
    ok = ?FILE_MODULE:make_dir(Base),

    %% A component of the path does not exist.
    {error, enoent} = ?FILE_MODULE:make_dir(filename:join([Base, "a", "b"])),

    %% Use a path-name with a non-directory component.
    Afile = filename:join(Base, "a_directory"),
    ok = ?FILE_MODULE:write_file(Afile, "hello\n"),
    case ?FILE_MODULE:make_dir(
            filename:join(Afile, "another_directory")) of
        {error, enotdir} -> io:format("Result: enotdir");
        {error, enoent} -> io:format("Result: enoent")
    end,

    %% No permission (on Unix only).
    case os:type() of
	{win32, _} ->
	    ok;
	_ ->
	    ?FILE_MODULE:write_file_info(Base, #file_info {mode=0}),
	    {error, eacces} = ?FILE_MODULE:make_dir(filename:join(Base, "xxxx")),
	    ?FILE_MODULE:write_file_info(
		     Base, #file_info {mode=8#600})
    end,
    test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

e_del_dir(suite) -> [];
e_del_dir(doc) -> [];
e_del_dir(Config) when is_list(Config) ->
    Dog = test_server:timetrap(test_server:seconds(10)),
    RootDir = ?config(priv_dir, Config),
    Base = test_server:temp_name(filename:join(RootDir, "e_del_dir")),
    io:format("Base: ~p", [Base]),
    ok = ?FILE_MODULE:make_dir(Base),

    %% Delete a non-existent directory.
    {error, enoent} = 
	?FILE_MODULE:del_dir(filename:join(Base, "non_existing")),

    %% Use a path-name with a non-directory component.
    Afile = filename:join(Base, "a_directory"),
    ok = ?FILE_MODULE:write_file(Afile, "hello\n"),
    {error, E1} = expect({error, enotdir}, {error, enoent},
	?FILE_MODULE:del_dir(
	    filename:join(Afile, "another_directory"))),
    io:format("Result: ~p", [E1]),

    %% Delete a non-empty directory.
    {error, E2} = expect({error, enotempty}, {error, eexist}, {error, eacces},
	       ?FILE_MODULE:del_dir(Base)),
    io:format("Result: ~p", [E2]),

    %% Remove the current directory.
    {error, E3} = expect({error, einval}, 
	       {error, eperm}, % Linux and DUX
	       {error, eacces},
	       {error, ebusy},
	       ?FILE_MODULE:del_dir(".")),
    io:format("Result: ~p", [E3]),

    %% No permission.
    case os:type() of
	{win32, _} ->
	    ok;
	_ ->
	    ADirectory = filename:join(Base, "no_perm"),
	    ok = ?FILE_MODULE:make_dir(ADirectory),
	    ?FILE_MODULE:write_file_info( Base, #file_info {mode=0}),
	    {error, eacces} = ?FILE_MODULE:del_dir(ADirectory),
	    ?FILE_MODULE:write_file_info( Base, #file_info {mode=8#600})
    end,
    [] = flush(),
    test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


%% Trying reading and positioning from a compressed file.

read_compressed_cooked(Config) when is_list(Config) ->
    ?line Data = ?config(data_dir, Config),
    ?line Real = filename:join(Data, "realmen.html.gz"),
    ?line {ok, Fd} = ?FILE_MODULE:open(Real, [read,compressed]),
    ?line try_read_file_list(Fd).

read_compressed_cooked_binary(Config) when is_list(Config) ->
    ?line Data = ?config(data_dir, Config),
    ?line Real = filename:join(Data, "realmen.html.gz"),
    ?line {ok, Fd} = ?FILE_MODULE:open(Real, [read,compressed,binary]),
    ?line try_read_file_binary(Fd).

%% Trying reading and positioning from an uncompressed file,
%% but with the compressed flag given.

read_not_really_compressed(Config) when is_list(Config) ->
    ?line Data = ?config(data_dir, Config),
    ?line Priv = ?config(priv_dir, Config),

    %% The file realmen.html might have got CRs added (by WinZip).
    %% Remove them, or the file positions will not be correct.

    ?line Real = filename:join(Data, "realmen.html"),
    ?line RealPriv = filename:join(Priv, 
				   atom_to_list(?MODULE)++"_realmen.html"),
    ?line {ok, RealDataBin} = ?FILE_MODULE:read_file(Real),
    ?line RealData = remove_crs(binary_to_list(RealDataBin), []),
    ?line ok = ?FILE_MODULE:write_file(RealPriv, RealData),
    ?line {ok, Fd} = ?FILE_MODULE:open(RealPriv, [read, compressed]),
    ?line try_read_file_list(Fd).

remove_crs([$\r|Rest], Result) ->
    remove_crs(Rest, Result);
remove_crs([C|Rest], Result) ->
    remove_crs(Rest, [C|Result]);
remove_crs([], Result) ->
    lists:reverse(Result).

try_read_file_list(Fd) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),

    %% Seek to the current position (nothing should happen).

    ?line {ok, 0} = ?FILE_MODULE:position(Fd, 0),
    ?line {ok, 0} = ?FILE_MODULE:position(Fd, {cur, 0}),

    %% Read a few lines from a compressed file.

    ?line ShouldBe = "<TITLE>Real Programmers Don't Use PASCAL</TITLE>\n",
    ?line ShouldBe = io:get_line(Fd, ''),

    %% Now seek forward.

    ?line {ok, 381} = ?FILE_MODULE:position(Fd, 381),
    ?line Back = "Back in the good old days -- the \"Golden Era\" " ++
	"of computers, it was\n",
    ?line Back = io:get_line(Fd, ''),

    %% Try to search forward relative to the current position.

    ?line {ok, CurPos} = ?FILE_MODULE:position(Fd, {cur, 0}),
    ?line RealPos = 4273,
    ?line {ok, RealPos} = ?FILE_MODULE:position(Fd, {cur, RealPos-CurPos}),
    ?line RealProg = "<LI> Real Programmers aren't afraid to use GOTOs.\n",
    ?line RealProg = io:get_line(Fd, ''),

    %% Seek backward.

    ?line AfterTitle = length("<TITLE>"),
    ?line {ok, AfterTitle} = ?FILE_MODULE:position(Fd, AfterTitle),
    ?line Title = "Real Programmers Don't Use PASCAL</TITLE>\n",
    ?line Title = io:get_line(Fd, ''),

    %% Seek past the end of the file.

    ?line {ok, _} = ?FILE_MODULE:position(Fd, 25000),

    %% Done.

    ?line ?FILE_MODULE:close(Fd),
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

try_read_file_binary(Fd) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),

    %% Seek to the current position (nothing should happen).

    ?line {ok, 0} = ?FILE_MODULE:position(Fd, 0),
    ?line {ok, 0} = ?FILE_MODULE:position(Fd, {cur, 0}),

    %% Read a few lines from a compressed file.

    ?line ShouldBe = <<"<TITLE>Real Programmers Don't Use PASCAL</TITLE>\n">>,
    ?line ShouldBe = io:get_line(Fd, ''),

    %% Now seek forward.

    ?line {ok, 381} = ?FILE_MODULE:position(Fd, 381),
    ?line Back = <<"Back in the good old days -- the \"Golden Era\" "
		  "of computers, it was\n">>,
    ?line Back = io:get_line(Fd, ''),

    %% Try to search forward relative to the current position.

    ?line {ok, CurPos} = ?FILE_MODULE:position(Fd, {cur, 0}),
    ?line RealPos = 4273,
    ?line {ok, RealPos} = ?FILE_MODULE:position(Fd, {cur, RealPos-CurPos}),
    ?line RealProg = <<"<LI> Real Programmers aren't afraid to use GOTOs.\n">>,
    ?line RealProg = io:get_line(Fd, ''),

    %% Seek backward.

    ?line AfterTitle = length("<TITLE>"),
    ?line {ok, AfterTitle} = ?FILE_MODULE:position(Fd, AfterTitle),
    ?line Title = <<"Real Programmers Don't Use PASCAL</TITLE>\n">>,
    ?line Title = io:get_line(Fd, ''),

    %% Done.

    ?line ?FILE_MODULE:close(Fd),
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

read_cooked_tar_problem(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),

    ?line Data = ?config(data_dir, Config),
    ?line ProblemFile = filename:join(Data, "cooked_tar_problem.tar.gz"),
    ?line {ok,Fd} = ?FILE_MODULE:open(ProblemFile, [read,compressed,binary]),

    ?line {ok,34304} = file:position(Fd, 34304),
    ?line {ok,Bin} = file:read(Fd, 512),
    ?line 512 = byte_size(Bin),
    
    ?line {ok,34304+512+1024} = file:position(Fd, {cur,1024}),
    
    ?line ok = file:close(Fd),

    ?line test_server:timetrap_cancel(Dog),
    ok.


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

write_compressed(suite) -> [];
write_compressed(doc) -> [];
write_compressed(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line Priv = ?config(priv_dir, Config),
    ?line MyFile = filename:join(Priv, 
				 atom_to_list(?MODULE)++"_test.gz"),

    %% Write a file.

    ?line {ok, Fd} = ?FILE_MODULE:open(MyFile, [write, compressed]),
    ?line {ok, 0} = ?FILE_MODULE:position(Fd, 0),
    ?line Prefix = "hello\n",
    ?line End = "end\n",
    ?line ok = io:put_chars(Fd, Prefix),
    ?line {ok, 143} = ?FILE_MODULE:position(Fd, 143),
    ?line ok = io:put_chars(Fd, End),
    ?line ok = ?FILE_MODULE:close(Fd),

    %% Read the file and verify the contents.

    ?line {ok, Fd1} = ?FILE_MODULE:open(MyFile, [read, compressed]),
    ?line Prefix = io:get_line(Fd1, ''),
    ?line Second = lists:duplicate(143-length(Prefix), 0) ++ End,
    ?line Second = io:get_line(Fd1, ''),
    ?line ok = ?FILE_MODULE:close(Fd1),

    %% Verify successful compression by uncompressing the file
    %% using zlib:gunzip/1.

    ?line {ok,Contents} = file:read_file(MyFile),
    ?line <<"hello\n",0:137/unit:8,"end\n">> = zlib:gunzip(Contents),

    %% Ensure that the file is compressed.

    TotalSize = 143 + length(End),
    case ?FILE_MODULE:read_file_info(MyFile) of
	{ok, #file_info{size=Size}} when Size < TotalSize ->
	    ok;
	{ok, #file_info{size=Size}} when Size == TotalSize ->
	    test_server:fail(file_not_compressed)
    end,

    %% Write again to ensure that the file is truncated.

    ?line {ok, Fd2} = ?FILE_MODULE:open(MyFile, [write, compressed]),
    ?line NewString = "aaaaaaaaaaa",
    ?line ok = io:put_chars(Fd2, NewString),
    ?line ok = ?FILE_MODULE:close(Fd2),
    ?line {ok, Fd3} = ?FILE_MODULE:open(MyFile, [read, compressed]),
    ?line {ok, NewString} = ?FILE_MODULE:read(Fd3, 1024),
    ?line ok = ?FILE_MODULE:close(Fd3),

    %% Done.

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

catenated_gzips(Config) when is_list(Config) ->
    ?line Priv = ?config(priv_dir, Config),
    ?line MyFile = filename:join(Priv, ?MODULE_STRING++"_test.gz"),

    First = "Hello, all good men going to search parties. ",
    Second = "Now I really need your help.",
    All = iolist_to_binary([First|Second]),
    ?line Cat = [zlib:gzip(First),zlib:gzip(Second)],
    
    ?line ok = file:write_file(MyFile, Cat),

    ?line {ok,Fd} = file:open(MyFile, [read,compressed,binary]),
    ?line {ok,All} = file:read(Fd, 100000),
    ?line ok = file:close(Fd),

    ok.


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

compress_errors(suite) -> [];
compress_errors(doc) -> [];
compress_errors(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line DataDir = 
	filename:dirname(
	  filename:join(?config(data_dir, Config), "x")),
    ?line DataDirSlash = DataDir++"/",
    ?line {error, enoent} = ?FILE_MODULE:open("non_existing__",
					      [compressed, read]),
    ?line {error, einval} = ?FILE_MODULE:open("non_existing__",
					      [compressed, read, write]),
    ?line {error, einval} = ?FILE_MODULE:open("non_existing__",
					      [compressed, read, append]),
    ?line {error, einval} = ?FILE_MODULE:open("non_existing__",
					      [compressed, write, append]),
    ?line {error, E1} = ?FILE_MODULE:open(DataDir, [compressed, read]),
    ?line {error, E2} = ?FILE_MODULE:open(DataDirSlash, [compressed, read]),
    ?line {error, E3} = ?FILE_MODULE:open(DataDir, [compressed, write]),
    ?line {error, E4} = ?FILE_MODULE:open(DataDirSlash, [compressed, write]),
    ?line {eisdir,eisdir,eisdir,eisdir} = {E1,E2,E3,E4},

    %% Read a corrupted .gz file.

    ?line Corrupted = filename:join(DataDir, "corrupted.gz"),
    ?line {ok, Fd} = ?FILE_MODULE:open(Corrupted, [read, compressed]),
    ?line {error, eio} = ?FILE_MODULE:read(Fd, 100),
    ?line ?FILE_MODULE:close(Fd),

    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

compress_async_crash(suite) -> [];
compress_async_crash(doc) -> [];
compress_async_crash(Config) when is_list(Config) ->
    ?line DataDir = ?config(data_dir, Config),
    ?line Path = filename:join(DataDir, "test.gz"),
    ExpectedData = <<"qwerty">>,

    ?line _ = ?FILE_MODULE:delete(Path),
    ?line {ok, Fd} = ?FILE_MODULE:open(Path, [write, binary, compressed]),
    ?line ok = ?FILE_MODULE:write(Fd, ExpectedData),
    ?line ok = ?FILE_MODULE:close(Fd),

    % Test that when using async thread pool, the emulator doesn't crash
    % when the efile port driver is stopped while a compressed file operation
    % is in progress (being carried by an async thread).
    ?line ok = compress_async_crash_loop(10000, Path, ExpectedData),
    ?line ok = ?FILE_MODULE:delete(Path),
    ok.

compress_async_crash_loop(0, _Path, _ExpectedData) ->
    ok;
compress_async_crash_loop(N, Path, ExpectedData) ->
    Parent = self(),
    {Pid, Ref} = spawn_monitor(
            fun() ->
                    ?line {ok, Fd} = ?FILE_MODULE:open(
                                        Path, [read, compressed, raw, binary]),
                    Len = byte_size(ExpectedData),
                    Parent ! {self(), continue},
                    ?line {ok, ExpectedData} = ?FILE_MODULE:read(Fd, Len),
                    ?line ok = ?FILE_MODULE:close(Fd),
                    receive foobar -> ok end
            end),
    receive
        {Pid, continue} ->
            exit(Pid, shutdown),
            receive
                {'DOWN', Ref, _, _, Reason} ->
                    ?line shutdown = Reason
            end;
        {'DOWN', Ref, _, _, Reason2} ->
            test_server:fail({worker_exited, Reason2})
    after 60000 ->
            exit(Pid, shutdown),
            erlang:demonitor(Ref, [flush]),
            test_server:fail(worker_timeout)
    end,
    compress_async_crash_loop(N - 1, Path, ExpectedData).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

altname(doc) ->
    "Test the file:altname/1 function";
altname(suite) ->
    [];
altname(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 "long alternative path name with spaces"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    ?line Name = filename:join(NewDir, "a_file_with_long_name"),
    ?line ShortName = filename:join(NewDir, "short"),
    ?line NonexName = filename:join(NewDir, "nonexistent"),
    ?line ok = ?FILE_MODULE:write_file(Name, "some contents\n"),
    ?line ok = ?FILE_MODULE:write_file(ShortName, "some contents\n"),
    ?line Result = 
	case ?FILE_MODULE:altname(NewDir) of
	    {error, enotsup} ->
		{skipped, "Altname not supported on this platform"};
	    {ok, "LONGAL~1"} -> 
		?line {ok, "A_FILE~1"} = ?FILE_MODULE:altname(Name),
		?line {ok, "C:/"} = ?FILE_MODULE:altname("C:/"),
		?line {ok, "C:\\"} = ?FILE_MODULE:altname("C:\\"),
		?line {error,enoent} = ?FILE_MODULE:altname(NonexName),
		?line {ok, "short"} = ?FILE_MODULE:altname(ShortName),
		ok
	end,
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    Result.


make_link(doc) -> "Test creating a hard link.";
make_link(suite) -> [];
make_link(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_make_link"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    
    ?line Name = filename:join(NewDir, "a_file"),
    ?line ok = ?FILE_MODULE:write_file(Name, "some contents\n"),
    
    ?line Alias = filename:join(NewDir, "an_alias"),
    ?line Result = 
	case ?FILE_MODULE:make_link(Name, Alias) of
	    {error, enotsup} ->
		{skipped, "Links not supported on this platform"};
	    ok ->
		%% Note: We take the opportunity to test 
		%% ?FILE_MODULE:read_link_info/1,
		%% which should in behave exactly as 
		%% ?FILE_MODULE:read_file_info/1
		%% since they are not used on symbolic links.
		
		?line {ok, Info} = ?FILE_MODULE:read_link_info(Name),
		?line {ok, Info} = ?FILE_MODULE:read_link_info(Alias),
		?line #file_info{links = 2, type = regular} = Info,
		?line {error, eexist} = 
		    ?FILE_MODULE:make_link(Name, Alias),
		ok
	end,
    
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    Result.

read_link_info_for_non_link(doc) ->
    "Test that reading link info for an ordinary file or directory works "
	"(on all platforms).";
read_link_info_for_non_link(suite) -> [];
read_link_info_for_non_link(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),

    ?line {ok, #file_info{type=directory}} = 
	?FILE_MODULE:read_link_info("."),
		  
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.

symlinks(doc) -> "Test operations on symbolic links (for Unix).";
symlinks(suite) -> [];
symlinks(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line {error, _} = ?FILE_MODULE:read_link(lists:duplicate(10000,$a)),
    {error, _} = ?FILE_MODULE:read_link_all(lists:duplicate(10000,$a)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line NewDir = filename:join(RootDir, 
				 atom_to_list(?MODULE)
				 ++"_symlinks"),
    ?line ok = ?FILE_MODULE:make_dir(NewDir),
    
    ?line Name = filename:join(NewDir, "a_plain_file"),
    ?line ok = ?FILE_MODULE:write_file(Name, "some stupid content\n"),
    
    ?line Alias = filename:join(NewDir, "a_symlink_alias"),
    ?line Result = 
	case ?FILE_MODULE:make_symlink(Name, Alias) of
	    {error, enotsup} ->
		{skipped, "Links not supported on this platform"};
	    ok ->
		?line {ok, Info1} = ?FILE_MODULE:read_file_info(Name),
		?line {ok, Info1} = ?FILE_MODULE:read_file_info(Alias),
		?line {ok, Info1} = ?FILE_MODULE:read_link_info(Name),
		?line #file_info{links = 1, type = regular} = Info1,
		
		?line {ok, Info2} = ?FILE_MODULE:read_link_info(Alias),
		?line #file_info{links=1, type=symlink} = Info2,
		?line {ok, Name} = ?FILE_MODULE:read_link(Alias),
		{ok, Name} = ?FILE_MODULE:read_link_all(Alias),
		%% If all is good, delete dir again (avoid hanging dir on windows)
		rm_rf(?FILE_MODULE,NewDir),
		ok
	  end,
    
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    Result.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

copy(doc) -> [];
copy(suite) -> [];
copy(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = ?config(priv_dir, Config),
    %% Create a text file.
    ?line Name1 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_1.txt"),
    ?line Line = "The quick brown fox jumps over a lazy dog. 0123456789\n",
    ?line Len = length(Line),
    ?line {ok, Handle1} = ?FILE_MODULE:open(Name1, [write]),
    ?line {_, Size1} = 
	iterate({0, 0},
		done,
		fun({_, S}) when S >= 128*1024 ->
			done;
		   ({N, S}) ->
			H = integer_to_list(N),
			ok = ?FILE_MODULE:write(Handle1, [H, " ", Line]),
			{N + 1, S + length(H) + 1 + Len}
		end),
    ?line ?FILE_MODULE:close(Handle1),
    %% Make a copy
    ?line Name2 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_2.txt"),
    ?line {ok, Size1} = ?FILE_MODULE:copy(Name1, Name2),
    %% Concatenate 1
    ?line Name3 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_3.txt"),
    ?line {ok, Handle3} = ?FILE_MODULE:open(Name3, [raw, write, binary]),
    ?line {ok, Size1} = ?FILE_MODULE:copy(Name1, Handle3),
    ?line {ok, Handle2} = ?FILE_MODULE:open(Name2, [read, binary]),
    ?line {ok, Size1} = ?FILE_MODULE:copy(Handle2, Handle3),
    ?line ok = ?FILE_MODULE:close(Handle3),
    ?line ok = ?FILE_MODULE:close(Handle2),
    %% Concatenate 2
    ?line Name4 = filename:join(RootDir, atom_to_list(?MODULE)++"_copy_4.txt"),
    ?line {ok, Handle4} = ?FILE_MODULE:open(Name4, [write, binary]),
    ?line {ok, Size1} = ?FILE_MODULE:copy(Name1, Handle4),
    ?line {ok, Handle5} = ?FILE_MODULE:open(Name2, [raw, read, binary]),
    ?line {ok, Size1} = ?FILE_MODULE:copy(Handle5, Handle4),
    ?line ok = ?FILE_MODULE:close(Handle5),
    ?line ok = ?FILE_MODULE:close(Handle4),
    %% %% Just for test of the test
    %% ?line {ok, Handle2q} = ?FILE_MODULE:open(Name2, [write, append]),
    %% ?line ok = ?FILE_MODULE:write(Handle2q, "q"),
    %% ?line ok = ?FILE_MODULE:close(Handle2q),
    %% Compare the files
    ?line {ok, Handle1a} = ?FILE_MODULE:open(Name1, [raw, read]),
    ?line {ok, Handle2a} = ?FILE_MODULE:open(Name2, [raw, read]),
    ?line true = stream_cmp(fd_stream_factory([Handle1a]), 
			    fd_stream_factory([Handle2a])),
    ?line {ok, 0} = ?FILE_MODULE:position(Handle1a, 0),
    ?line {ok, 0} = ?FILE_MODULE:position(Handle2a, 0),
    ?line {ok, Handle3a} = ?FILE_MODULE:open(Name3, [raw, read]),
    ?line true = stream_cmp(fd_stream_factory([Handle1a, Handle2a]), 
			    fd_stream_factory([Handle2a])),
    ?line ok = ?FILE_MODULE:close(Handle1a),
    ?line ok = ?FILE_MODULE:close(Handle2a),
    ?line ok = ?FILE_MODULE:close(Handle3a),
    ?line [] = flush(),
    ?line test_server:timetrap_cancel(Dog),
    ok.



fd_stream_factory([]) ->
    [];
fd_stream_factory([Fd | T] = L) ->
    fun() ->
	    case ?FILE_MODULE:read(Fd, 8192) of
		{ok, Data} when is_binary(Data) ->
		    binary_to_list(Data) ++ fd_stream_factory(L);
		{ok, Data} when is_list(Data) ->
		    Data ++ fd_stream_factory(L);
		eof ->
		    fd_stream_factory(T);
		{error, _} = Error ->
		    Error
	    end
    end.

		    

stream_cmp(F1, F2) when is_function(F1), is_function(F2) ->
    stream_cmp(F1(), F2());
stream_cmp(F, X) when is_function(F) ->
    stream_cmp(F(), X);
stream_cmp(X, F) when is_function(F) ->
    stream_cmp(X, F());
stream_cmp({error, _} = Error, _) ->
    Error;
stream_cmp(_, {error, _} = Error) ->
    Error;
stream_cmp([], []) ->
    true;
stream_cmp([], [_|_]) ->
    false;
stream_cmp([_|_], []) ->
    false;
stream_cmp([H | T1], [H | T2]) ->
    stream_cmp(T1, T2).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%% Test the get_cwd(), open(), and copy() file server calls.
new_slave(_RootDir, Cwd) ->
    ?line L = "qwertyuiopasdfghjklzxcvbnm",
    ?line N = length(L),
    ?line {ok, Cwd}         = ?FILE_MODULE:get_cwd(),
    ?line {error, enotsup}  = ?FILE_MODULE:get_cwd("C:"), % Unix only testcase
    ?line {ok, FD1}         = ?FILE_MODULE:open("file1.txt", write),
    ?line ok                = ?FILE_MODULE:close(FD1),
    ?line {ok, FD2}         = ?FILE_MODULE:open("file1.txt", 
						[write, append, 
						 binary, compressed,
						 delayed_write,
						 {delayed_write, 0, 0},
						 read_ahead,
						 {read_ahead, 0}]),
    ?line ok                = ?FILE_MODULE:write(FD2, L),
    ?line ok                = ?FILE_MODULE:close(FD2),
    ?line {ok, N2}          = ?FILE_MODULE:copy("file1.txt", "file2.txt"),
    ?line io:format("Size ~p, compressed ~p.~n", [N, N2]),
    ?line {ok, FD3}         = ?FILE_MODULE:open("file2.txt", 
						[binary, compressed]),
    %% The file_io_server will translate the binary into a list
    ?line {ok, L}           = ?FILE_MODULE:read(FD3, N+1),
    ?line ok                = ?FILE_MODULE:close(FD3),
    %%
    ?line ok                = ?FILE_MODULE:delete("file1.txt"),
    ?line ok                = ?FILE_MODULE:delete("file2.txt"),
    ?line []                = flush(),
    ok.


%% Test the get_cwd() and open() file server calls.
old_slave(_RootDir, Cwd) ->
    ?line L = "qwertyuiopasdfghjklzxcvbnm",
    ?line N = length(L),
    ?line {ok, Cwd}         = ?FILE_MODULE:get_cwd(),
    ?line {error, enotsup}  = ?FILE_MODULE:get_cwd("C:"), % Unix only testcase
    ?line {ok, FD1}         = ?FILE_MODULE:open("file1.txt", write),
    ?line ok                = ?FILE_MODULE:close(FD1),
    ?line {ok, FD2}         = ?FILE_MODULE:open("file1.txt", 
						[write, binary, compressed]),
    ?line ok                = ?FILE_MODULE:write(FD2, L),
    ?line ok                = ?FILE_MODULE:close(FD2),
    ?line {ok, FD3}         = ?FILE_MODULE:open("file1.txt", [write, append]),
    ?line ok                = ?FILE_MODULE:close(FD3),
    ?line {ok, FD4}         = ?FILE_MODULE:open("file1.txt", 
						[binary, compressed]),
    %% The file_io_server will translate the binary into a list
    ?line {ok, L}           = ?FILE_MODULE:read(FD4, N+1),
    ?line ok                = ?FILE_MODULE:close(FD4),
    %%
    ?line ok                = ?FILE_MODULE:delete("file1.txt"),
    ?line []                = flush(),
    ok.

run_test(Test, Args) ->
    ?line case (catch apply(?MODULE, Test, Args)) of
	      {'EXIT', _} = Exit ->
		  {done, Exit, get(test_server_loc)};
	      Result ->
		  {done, Result}
	  end.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

delayed_write(suite) ->
    [];
delayed_write(doc) ->
    ["Tests the file open option {delayed_write, Size, Delay}"];

delayed_write(Config) when is_list(Config) ->
    Dog = ?t:timetrap(?t:seconds(20)),
    
    RootDir = ?config(priv_dir, Config),
    File = filename:join(RootDir, 
          	       atom_to_list(?MODULE)++"_delayed_write.txt"),
    Data1 = "asdfghjkl",
    Data2 = "qwertyuio",
    Data3 = "zxcvbnm,.",
    Size = length(Data1),
    Size = length(Data2),
    Size = length(Data3),
    Data1Data1 = Data1++Data1,
    Data1Data1Data1 = Data1Data1++Data1,
    Data1Data1Data1Data1 = Data1Data1++Data1Data1,
    %%
    %% Test caching and normal close of non-raw file
    {ok, Fd1} = 
	?FILE_MODULE:open(File, [write, {delayed_write, Size+1, 2000}]),
    ok = ?FILE_MODULE:write(Fd1, Data1),
    ?t:sleep(1000), % Just in case the file system is slow
    {ok, Fd2} = ?FILE_MODULE:open(File, [read]),
    eof = ?FILE_MODULE:read(Fd2, 1),
    ok = ?FILE_MODULE:write(Fd1, Data1), % Data flush on size
    ?t:sleep(1000), % Just in case the file system is slow
    {ok, Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 2*Size+1),
    ok = ?FILE_MODULE:write(Fd1, Data1),
    ?t:sleep(3000), % Wait until data flush on timeout
    {ok, Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 3*Size+1),
    ok = ?FILE_MODULE:write(Fd1, Data1),
    ok = ?FILE_MODULE:close(Fd1), % Data flush on close
    ?t:sleep(1000), % Just in case the file system is slow
    {ok, Data1Data1Data1Data1} = ?FILE_MODULE:pread(Fd2, bof, 4*Size+1),
    ok = ?FILE_MODULE:close(Fd2),
    %%
    %% Test implicit close through exit by file owning process, 
    %% raw file, default parameters.
    Parent = self(),
    Fun = fun() ->
	    Child = self(),
	    Test = 
	    fun () ->
		    {ok, Fd} = ?FILE_MODULE:open(File, 
			[raw, write, delayed_write]),
		    ok = ?FILE_MODULE:write(Fd, Data1),
		    Parent ! {Child, wrote},
		    receive 
			{Parent, continue, Reason} -> 
			    {ok, Reason}
		    end
	    end,
	    case (catch Test()) of
		{ok, Reason} -> exit(Reason);
		Unknown ->
		    exit({Unknown, get(test_server_loc)})
	    end
    end,
    Child1 = spawn(Fun),
    Mref1 = erlang:monitor(process, Child1),
    receive 
        {Child1, wrote} -> 
            ok;
        {'DOWN', Mref1, _, _, _} = Down1a ->
            ?t:fail(Down1a)
    end,
    ?t:sleep(1000), % Just in case the file system is slow
    {ok, Fd3} = ?FILE_MODULE:open(File, [read]),
    eof = ?FILE_MODULE:read(Fd3, 1),
    Child1 ! {Parent, continue, normal},
    receive 
        {'DOWN', Mref1, process, Child1, normal} -> 
            ok;
        {'DOWN', Mref1, _, _, _} = Down1b ->
            ?t:fail(Down1b)
    end,
    ?t:sleep(1000), % Just in case the file system is slow
    {ok, Data1} = ?FILE_MODULE:pread(Fd3, bof, Size+1),
    ok = ?FILE_MODULE:close(Fd3),
    %%
    %% The same again, but this time with reason 'kill'.
    Child2 = spawn(Fun),
    Mref2 = erlang:monitor(process, Child2),
    receive 
        {Child2, wrote} -> 
            ok;
        {'DOWN', Mref2, _, _, _} = Down2a ->
            ?t:fail(Down2a)
    end,
    ?t:sleep(1000), % Just in case the file system is slow
    {ok, Fd4} = ?FILE_MODULE:open(File, [read]),
    eof = ?FILE_MODULE:read(Fd4, 1),
    Child2 ! {Parent, continue, kill},
    receive 
        {'DOWN', Mref2, process, Child2, kill} -> 
            ok;
        {'DOWN', Mref2, _, _, _} = Down2b ->
            ?t:fail(Down2b)
    end,
    ?t:sleep(1000), % Just in case the file system is slow
    eof = ?FILE_MODULE:pread(Fd4, bof, 1),
    ok  = ?FILE_MODULE:close(Fd4),
    %%
    %% Test if file position works with delayed_write
    {ok, Fd5} = ?FILE_MODULE:open(File, [raw, read, write, 
          			       delayed_write]),
    ok = ?FILE_MODULE:truncate(Fd5),
    ok = ?FILE_MODULE:write(Fd5, [Data1|Data2]),
    {ok, 0} = ?FILE_MODULE:position(Fd5, bof),
    ok = ?FILE_MODULE:write(Fd5, [Data3]),
    {ok, Data2} = ?FILE_MODULE:read(Fd5, Size+1),
    {ok, 0} = ?FILE_MODULE:position(Fd5, bof),
    Data3Data2 = Data3++Data2,
    {ok, Data3Data2} = ?FILE_MODULE:read(Fd5, 2*Size+1),
    ok = ?FILE_MODULE:close(Fd5),
    %%
    [] = flush(),
    ?t:timetrap_cancel(Dog),
    ok.


pid2name(doc) -> "Tests file:pid2name/1.";
pid2name(suite) -> [];
pid2name(Config) when is_list(Config) ->
    ?line Dog = test_server:timetrap(test_server:seconds(10)),
    ?line RootDir = ?config(priv_dir, Config),
    ?line Base = test_server:temp_name(
		   filename:join(RootDir, "pid2name_")),
    ?line Name1 = [Base, '.txt'],
    ?line Name2 = Base ++ ".txt",
    %%
    ?line {ok, Pid} = file:open(Name1, [write]),
    ?line {ok, Name2} = file:pid2name(Pid),
    ?line undefined = file:pid2name(self()),
    ?line ok = file:close(Pid),
    ?line test_server:sleep(1000),
    ?line false = is_process_alive(Pid),
    ?line undefined = file:pid2name(Pid),
    %%
    ?line test_server:timetrap_cancel(Dog),
    ok.


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

read_ahead(suite) ->
    [];
read_ahead(doc) ->
    ["Tests the file open option {read_ahead, Size}"];

read_ahead(Config) when is_list(Config) ->
    ?line Dog = ?t:timetrap(?t:seconds(20)),
    %%
    ?line RootDir = ?config(priv_dir, Config),
    ?line File = filename:join(RootDir, 
			       atom_to_list(?MODULE)++"_read_ahead.txt"),
    ?line Data1 = "asdfghjkl", % Must be
    ?line Data2 = "qwertyuio", % same
    ?line Data3 = "zxcvbnm,.", % length
    ?line Size = length(Data1),
    ?line Size = length(Data2),
    ?line Size = length(Data3),
    %%
    %% Test caching of normal non-raw file
    ?line {ok, Fd1} = ?FILE_MODULE:open(File, [write]),
    ?line ok = ?FILE_MODULE:write(Fd1, [Data1|Data1]),
    ?line ?t:sleep(1000), % Just in case the file system is slow
    ?line {ok, Fd2} = ?FILE_MODULE:open(File, [read, {read_ahead, 2*Size}]),
    ?line {ok, Data1} = ?FILE_MODULE:read(Fd2, Size),
    ?line ok = ?FILE_MODULE:pwrite(Fd1, Size, Data2),
    ?line ?t:sleep(1000), % Just in case the file system is slow
    ?line {ok, Data1} = ?FILE_MODULE:read(Fd2, Size), % Will read cached data
    ?line Data2Data2Data2 = Data2++Data2++Data2,
    ?line ok = ?FILE_MODULE:pwrite(Fd1, eof, Data2Data2Data2),
    ?line ?t:sleep(1000), % Just in case the file system is slow
    ?line {ok, Data2Data2Data2} = 
	?FILE_MODULE:read(Fd2, 3*Size), % Read more than cache buffer
    ?line ok = ?FILE_MODULE:close(Fd1),
    ?line ok = ?FILE_MODULE:close(Fd2),
    %% Test caching of raw file and default parameters
    ?line {ok, Fd3} = ?FILE_MODULE:open(File, [raw, write]),
    ?line ok = ?FILE_MODULE:write(Fd3, [Data1|Data1]),
    ?line ?t:sleep(1000), % Just in case the file system is slow
    ?line {ok, Fd4} = ?FILE_MODULE:open(File, [raw, read, read_ahead]),
    ?line {ok, Data1} = ?FILE_MODULE:read(Fd4, Size),
    ?line ok = ?FILE_MODULE:pwrite(Fd3, Size, Data2),
    ?line ?t:sleep(1000), % Just in case the file system is slow
    ?line {ok, Data1} = ?FILE_MODULE:read(Fd4, Size), % Will read cached data
    ?line ok = ?FILE_MODULE:close(Fd3),
    ?line ok = ?FILE_MODULE:close(Fd4),
    %% Test if the file position works in combination with read_ahead
    ?line {ok, Fd5} = ?FILE_MODULE:open(File, [raw, read, write, read_ahead]),
    ?line ok = ?FILE_MODULE:truncate(Fd5),
    ?line ok = ?FILE_MODULE:write(Fd5, [Data1,Data1|Data3]),
    ?line {ok, 0} = ?FILE_MODULE:position(Fd5, bof),
    ?line {ok, Data1} = ?FILE_MODULE:read(Fd5, Size),
    ?line ok = ?FILE_MODULE:write(Fd5, Data2),
    ?line {ok, 0} = ?FILE_MODULE:position(Fd5, bof),
    ?line Data1Data2Data3 = Data1++Data2++Data3,
    ?line {ok, Data1Data2Data3} = ?FILE_MODULE:read(Fd5, 3*Size+1),
    ?line ok = ?FILE_MODULE:close(Fd5),
    %%
    ?line [] = flush(),
    ?line ?t:timetrap_cancel(Dog),
    ok.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



segment_read(suite) ->
    [];
segment_read(doc) ->
    ["Tests the segmenting of large reads"];
segment_read(Config) when is_list(Config) ->
    ?line Dog = ?t:timetrap(?t:seconds(60)),
    %%
    ?line Name = filename:join(?config(priv_dir, Config),
			       ?MODULE_STRING ++ "_segment_read"),
    ?line SegSize = 256*1024,
    ?line SegCnt = SegSize div 4,
    ?line Cnt = 4 * SegCnt,
    ?line ok = create_file(Name, Cnt),
    %% 
    %% read_file/1
    %%
    ?line {ok, Bin} = ?FILE_MODULE:read_file(Name),
    ?line true = verify_bin(Bin, 0, Cnt),
    %%
    %% read/2
    %%
    %% Not segmented
    ?line {ok, FD1} = ?FILE_MODULE:open(Name, [read, raw, binary]),
    ?line {ok, B1a} = ?FILE_MODULE:read(FD1, SegSize),
    ?line {ok, B1b} = ?FILE_MODULE:read(FD1, SegSize),
    ?line {ok, B1c} = ?FILE_MODULE:read(FD1, SegSize),
    ?line {ok, B1d} = ?FILE_MODULE:read(FD1, SegSize),
    ?line ok = ?FILE_MODULE:close(FD1),
    ?line true = verify_bin(B1a, 0*SegCnt, SegCnt),
    ?line true = verify_bin(B1b, 1*SegCnt, SegCnt),
    ?line true = verify_bin(B1c, 2*SegCnt, SegCnt),
    ?line true = verify_bin(B1d, 3*SegCnt, SegCnt),
    %%
    %% Segmented
    ?line {ok, FD2} = ?FILE_MODULE:open(Name, [read, raw, binary]),
    ?line {ok, B2a} = ?FILE_MODULE:read(FD2, 1*SegSize),
    ?line {ok, B2b} = ?FILE_MODULE:read(FD2, 2*SegSize),
    ?line {ok, B2c} = ?FILE_MODULE:read(FD2, 2*SegSize),
    ?line ok = ?FILE_MODULE:close(FD2),
    ?line true = verify_bin(B2a, 0*SegCnt, 1*SegCnt),
    ?line true = verify_bin(B2b, 1*SegCnt, 2*SegCnt),
    ?line true = verify_bin(B2c, 3*SegCnt, 1*SegCnt),
    %%
    %% pread/3
    %%
    ?line {ok, FD3} = ?FILE_MODULE:open(Name, [read, raw, binary]),
    %%
    %% Not segmented
    ?line {ok, B3d} = ?FILE_MODULE:pread(FD3, 3*SegSize, SegSize),
    ?line {ok, B3c} = ?FILE_MODULE:pread(FD3, 2*SegSize, SegSize),
    ?line {ok, B3b} = ?FILE_MODULE:pread(FD3, 1*SegSize, SegSize),
    ?line {ok, B3a} = ?FILE_MODULE:pread(FD3, 0*SegSize, SegSize),
    ?line true = verify_bin(B3a, 0*SegCnt, SegCnt),
    ?line true = verify_bin(B3b, 1*SegCnt, SegCnt),
    ?line true = verify_bin(B3c, 2*SegCnt, SegCnt),
    ?line true = verify_bin(B3d, 3*SegCnt, SegCnt),
    %%
    %% Segmented
    ?line {ok, B3g} = ?FILE_MODULE:pread(FD3, 3*SegSize, 2*SegSize),
    ?line {ok, B3f} = ?FILE_MODULE:pread(FD3, 1*SegSize, 2*SegSize),
    ?line {ok, B3e} = ?FILE_MODULE:pread(FD3, 0*SegSize, 1*SegSize),
    ?line true = verify_bin(B3e, 0*SegCnt, 1*SegCnt),
    ?line true = verify_bin(B3f, 1*SegCnt, 2*SegCnt),
    ?line true = verify_bin(B3g, 3*SegCnt, 1*SegCnt),
    %%
    ?line ok = ?FILE_MODULE:close(FD3),
    %%
    %% pread/2
    %%
    ?line {ok, FD5} = ?FILE_MODULE:open(Name, [read, raw, binary]),
    %%
    %% +---+---+---+---+
    %% | 4 | 3 | 2 | 1 |
    %% +---+---+---+---+
    %% <       ^       >
    ?line {ok, [B5d, B5c, B5b, B5a]} = 
	?FILE_MODULE:pread(FD5, [{3*SegSize, SegSize},
				 {2*SegSize, SegSize},
				 {1*SegSize, SegSize},
				 {0*SegSize, SegSize}]),
    ?line true = verify_bin(B5a, 0*SegCnt, SegCnt),
    ?line true = verify_bin(B5b, 1*SegCnt, SegCnt),
    ?line true = verify_bin(B5c, 2*SegCnt, SegCnt),
    ?line true = verify_bin(B5d, 3*SegCnt, SegCnt),
    %%
    %% +---+-------+-------+
    %% | 3 |   2   |   1   |
    %% +---+-------+-------+
    %% <     ^     ^   >
    ?line {ok, [B5g, B5f, B5e]} = 
	?FILE_MODULE:pread(FD5, [{3*SegSize, 2*SegSize},
				 {1*SegSize, 2*SegSize},
				 {0*SegSize, 1*SegSize}]),
    ?line true = verify_bin(B5e, 0*SegCnt, 1*SegCnt),
    ?line true = verify_bin(B5f, 1*SegCnt, 2*SegCnt),
    ?line true = verify_bin(B5g, 3*SegCnt, 1*SegCnt),
    %%
    %%
    %% +-------+-----------+
    %% |   2   |     1     |
    %% +-------+-----------+
    %% <     ^     ^   >
    ?line {ok, [B5i, B5h]} = 
	?FILE_MODULE:pread(FD5, [{2*SegSize, 3*SegSize},
				 {0*SegSize, 2*SegSize}]),
    ?line true = verify_bin(B5h, 0*SegCnt, 2*SegCnt),
    ?line true = verify_bin(B5i, 2*SegCnt, 2*SegCnt),
    %%
    %% +-------+---+---+
    %% |   3   | 2 | 1 |
    %% +-------+---+---+
    %% <     ^     ^   >
    ?line {ok, [B5l, B5k, B5j]} = 
	?FILE_MODULE:pread(FD5, [{3*SegSize, 1*SegSize},
				 {2*SegSize, 1*SegSize},
				 {0*SegSize, 2*SegSize}]),
    ?line true = verify_bin(B5j, 0*SegCnt, 2*SegCnt),
    ?line true = verify_bin(B5k, 2*SegCnt, 1*SegCnt),
    ?line true = verify_bin(B5l, 3*SegCnt, 1*SegCnt),
    %%
    %% Real time response time test.
    %%
    Req = lists:flatten(lists:duplicate(17,
					[{2*SegSize, 2*SegSize},
					 {0*SegSize, 2*SegSize}])),
    ?line {{ok, _}, Comment} = 
	response_analysis(?FILE_MODULE, pread, [FD5, Req]),
    ?line ok = ?FILE_MODULE:close(FD5),
    %%
    ?line [] = flush(),
    ?line ?t:timetrap_cancel(Dog),
    {comment, Comment}.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



segment_write(suite) ->
    [];
segment_write(doc) ->
    ["Tests the segmenting of large writes"];
segment_write(Config) when is_list(Config) ->
    ?line Dog = ?t:timetrap(?t:seconds(60)),
    %%
    ?line Name = filename:join(?config(priv_dir, Config),
			       ?MODULE_STRING ++ "_segment_write"),
    ?line SegSize = 256*1024,
    ?line SegCnt = SegSize div 4,
    ?line Cnt = 4 * SegCnt,
    ?line Bin = create_bin(0, Cnt),
    %%
    %% write/2
    %%
    %% Not segmented
    ?line {ok, FD1} = ?FILE_MODULE:open(Name, [write, raw, binary]),
    ?line ok = ?FILE_MODULE:write(FD1, subbin(Bin, 0*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:write(FD1, subbin(Bin, 1*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:write(FD1, subbin(Bin, 2*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:write(FD1, subbin(Bin, 3*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:close(FD1),
    ?line true = verify_file(Name, Cnt),
    %%
    %% Segmented
    ?line {ok, FD2} = ?FILE_MODULE:open(Name, [write, raw, binary]),
    ?line ok = ?FILE_MODULE:write(FD2, subbin(Bin, 0*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:write(FD2, subbin(Bin, 1*SegSize, 2*SegSize)),
    ?line ok = ?FILE_MODULE:write(FD2, subbin(Bin, 3*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:close(FD2),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +---+---+---+---+
    %% |   |   |   |   |
    %% +---+---+---+---+
    %% <       ^       >
    ?line ok = write_file(Name, [subbin(Bin, 0*SegSize, 1*SegSize),
				 subbin(Bin, 1*SegSize, 1*SegSize),
				 subbin(Bin, 2*SegSize, 1*SegSize),
				 subbin(Bin, 3*SegSize, 1*SegSize)]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +---+-------+---+
    %% |   |       |   |
    %% +---+-------+---+
    %% <     ^     ^   >
    ?line ok = write_file(Name, [subbin(Bin, 0*SegSize, 1*SegSize),
				 subbin(Bin, 1*SegSize, 2*SegSize),
				 subbin(Bin, 3*SegSize, 1*SegSize)]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +-------+-------+
    %% |       |       |
    %% +-------+-------+
    %% <     ^     ^   >
    ?line ok = write_file(Name, [subbin(Bin, 0*SegSize, 2*SegSize),
				 subbin(Bin, 2*SegSize, 2*SegSize)]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +-------+---+---+
    %% |       |   |   |
    %% +-------+---+---+
    %% <     ^     ^   >
    ?line ok = write_file(Name, [subbin(Bin, 0*SegSize, 2*SegSize),
				 subbin(Bin, 2*SegSize, 1*SegSize),
				 subbin(Bin, 3*SegSize, 1*SegSize)]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% pwrite/3
    %%
    %% Not segmented
    ?line {ok, FD3} = ?FILE_MODULE:open(Name, [write, raw, binary]),
    ?line ok = ?FILE_MODULE:pwrite(FD3, 3*SegSize, 
				   subbin(Bin, 3*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:pwrite(FD3, 2*SegSize, 
				   subbin(Bin, 2*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:pwrite(FD3, 1*SegSize, 
				   subbin(Bin, 1*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:pwrite(FD3, 0*SegSize, 
				   subbin(Bin, 0*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:close(FD3),
    ?line true = verify_file(Name, Cnt),
    %%
    %% Segmented
    ?line {ok, FD4} = ?FILE_MODULE:open(Name, [write, raw, binary]),
    ?line ok = ?FILE_MODULE:pwrite(FD4, 3*SegSize, 
				   subbin(Bin, 3*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:pwrite(FD4, 1*SegSize, 
				   subbin(Bin, 1*SegSize, 2*SegSize)),
    ?line ok = ?FILE_MODULE:pwrite(FD4, 0*SegSize, 
				   subbin(Bin, 0*SegSize, 1*SegSize)),
    ?line ok = ?FILE_MODULE:close(FD4),
    ?line true = verify_file(Name, Cnt),



    %%
    %% pwrite/2
    %%
    %% Not segmented
    ?line {ok, FD5} = ?FILE_MODULE:open(Name, [write, raw, binary]),
    ?line ok = ?FILE_MODULE:pwrite(FD5, [{3*SegSize,
					  subbin(Bin, 3*SegSize, 1*SegSize)}]),
    ?line ok = ?FILE_MODULE:pwrite(FD5, [{2*SegSize,
					  subbin(Bin, 2*SegSize, 1*SegSize)}]),
    ?line ok = ?FILE_MODULE:pwrite(FD5, [{1*SegSize,
					  subbin(Bin, 1*SegSize, 1*SegSize)}]),
    ?line ok = ?FILE_MODULE:pwrite(FD5, [{0*SegSize,
					  subbin(Bin, 0*SegSize, 1*SegSize)}]),
    ?line ok = ?FILE_MODULE:close(FD5),
    ?line true = verify_file(Name, Cnt),
    %%
    %% Segmented
    ?line {ok, FD6} = ?FILE_MODULE:open(Name, [write, raw, binary]),
    ?line ok = ?FILE_MODULE:pwrite(FD6, [{3*SegSize,
					  subbin(Bin, 3*SegSize, 1*SegSize)}]),
    ?line ok = ?FILE_MODULE:pwrite(FD6, [{1*SegSize,
					  subbin(Bin, 1*SegSize, 2*SegSize)}]),
    ?line ok = ?FILE_MODULE:pwrite(FD6, [{0*SegSize,
					  subbin(Bin, 0*SegSize, 1*SegSize)}]),
    ?line ok = ?FILE_MODULE:close(FD6),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +---+---+---+---+
    %% | 4 | 3 | 2 | 1 |
    %% +---+---+---+---+
    %% <       ^       >
    ?line ok = pwrite_file(Name, [{3*SegSize, 
				   subbin(Bin, 3*SegSize, 1*SegSize)},
				  {2*SegSize, 
				   subbin(Bin, 2*SegSize, 1*SegSize)},
				  {1*SegSize, 
				   subbin(Bin, 1*SegSize, 1*SegSize)},
				  {0*SegSize, 
				   subbin(Bin, 0*SegSize, 1*SegSize)}]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +---+-------+---+
    %% | 3 |   2   | 1 |
    %% +---+-------+---+
    %% <     ^     ^   >
    ?line ok = pwrite_file(Name, [{3*SegSize, 
				   subbin(Bin, 3*SegSize, 1*SegSize)},
				  {1*SegSize, 
				   subbin(Bin, 1*SegSize, 2*SegSize)},
				  {0*SegSize, 
				   subbin(Bin, 0*SegSize, 1*SegSize)}]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +-------+-------+
    %% |   2   |   1   |
    %% +-------+-------+
    %% <     ^     ^   >
    ?line ok = pwrite_file(Name, [{2*SegSize, 
				   subbin(Bin, 2*SegSize, 2*SegSize)},
				  {0*SegSize, 
				   subbin(Bin, 0*SegSize, 2*SegSize)}]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% +-------+---+---+
    %% |   3   | 2 | 1 |
    %% +-------+---+---+
    %% <     ^     ^   >
    ?line ok = pwrite_file(Name, [{3*SegSize, 
				   subbin(Bin, 3*SegSize, 1*SegSize)},
				  {2*SegSize, 
				   subbin(Bin, 2*SegSize, 1*SegSize)},
				  {0*SegSize, 
				   subbin(Bin, 0*SegSize, 2*SegSize)}]),
    ?line true = verify_file(Name, Cnt),
    %%
    %% Real time response time test.
    %%
    ?line {ok, FD7} = ?FILE_MODULE:open(Name, [write, raw, binary]),
    Req = lists:flatten(lists:duplicate(17,
					[{2*SegSize, 
					  subbin(Bin, 2*SegSize, 2*SegSize)},
					{0*SegSize, 
					 subbin(Bin, 0*SegSize, 2*SegSize)}])),
    ?line {ok, Comment} = 
	response_analysis(?FILE_MODULE, pwrite, [FD7, Req]),
    ?line ok = ?FILE_MODULE:close(FD7),
    %%
    ?line [] = flush(),
    ?line ?t:timetrap_cancel(Dog),
    {comment, Comment}.


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

ipread(suite) ->
    [];
ipread(doc) ->
    ["Test Dets special indirect pread"];
ipread(Config) when is_list(Config) ->
    ?line Dog = ?t:timetrap(?t:seconds(30)),
    %%
    ?line Dir = ?config(priv_dir, Config),
    ?line ok = ipread_int(Dir, [raw, binary]),
    ?line ok = ipread_int(Dir, [raw]),
    ?line ok = ipread_int(Dir, [binary]),
    ?line ok = ipread_int(Dir, []),
    ?line ok = ipread_int(Dir, [ram, binary]),
    ?line ok = ipread_int(Dir, [ram]),
    %%
    ?line [] = flush(),
    ?line ?t:timetrap_cancel(Dog),
    ok.

ipread_int(Dir, ModeList) ->
    ?line Name = 
	filename:join(Dir, 
		      lists:flatten([?MODULE_STRING, "_ipread",
		       lists:map(fun (X) ->
					 ["_", atom_to_list(X)]
				 end,
				 ModeList)])),
    ?line io:format("ipread_int<~p, ~p>~n", [Name, ModeList]),
    ?line {Conv, Sizeof} = 
	case lists:member(binary, ModeList) of
	    true ->
		{fun (Bin) when is_binary(Bin) -> Bin;
		     (List) when is_list(List) -> list_to_binary(List)
		 end, 
		 fun erlang:byte_size/1};
	    false ->
		{fun (Bin) when is_binary(Bin) -> binary_to_list(Bin);
		     (List) when is_list(List) -> List
		 end, 
		 fun erlang:length/1}
	end,
    ?line Pos = 4711,
    ?line Data = Conv("THE QUICK BROWN FOX JUMPS OVER A LAZY DOG"),
    ?line Size = Sizeof(Data),
    ?line Init = Conv("                 "),
    ?line SizeInit = Sizeof(Init),
    ?line Head = Conv(<<Size:32/big-unsigned, Pos:32/big-unsigned>>),
    ?line Filler = Conv(bytes($ , Pos-SizeInit-Sizeof(Head))),
    ?line Size1 = Size+1,
    ?line SizePos = Size+Pos,
    %%
    ?line {ok, FD} = ?FILE_MODULE:open(Name, [write, read | ModeList]),
    ?line ok = ?FILE_MODULE:truncate(FD),
    ?line ok = ?FILE_MODULE:write(FD, Init),
    ?line ok = ?FILE_MODULE:write(FD, Head),
    ?line ok = ?FILE_MODULE:write(FD, Filler),
    ?line ok = ?FILE_MODULE:write(FD, Data),
    %% Correct read
    ?line {ok, {Size, Pos, Data}} = 
	?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, infinity),
    %% Invalid header - size > max
    ?line eof = 
	?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size-1),
    %% Data block protudes over eof
    ?line ok = 
	?FILE_MODULE:pwrite(FD, SizeInit, 
			    <<Size1:32/big-unsigned, 
			     Pos:32/big-unsigned>>),
    ?line {ok, {Size1, Pos, Data}} = 
	?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size1),
    %% Data block outside file
    ?line ok =
	?FILE_MODULE:pwrite(FD, SizeInit, 
			    <<Size:32/big-unsigned, 
			     SizePos:32/big-unsigned>>),
    ?line {ok, {Size, SizePos, eof}} =
	?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size),
    %% Zero size
    ?line ok = 
	?FILE_MODULE:pwrite(FD, SizeInit, 
			    <<0:32/big-unsigned, 
			     Pos:32/big-unsigned>>),
    ?line {ok, {0, Pos, eof}} = 
	?FILE_MODULE:ipread_s32bu_p32bu(FD, SizeInit, Size),
    %% Invalid header - protudes over eof
    ?line eof = 
	?FILE_MODULE:ipread_s32bu_p32bu(FD, 
					Pos+Size-(Sizeof(Head)-1), 
					infinity),
    %% Header not even in file
    ?line eof = 
	?FILE_MODULE:ipread_s32bu_p32bu(FD, Pos+Size, infinity),
    %%
    ?line ok = ?FILE_MODULE:close(FD),
    ok.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

interleaved_read_write(suite) ->
    [];
interleaved_read_write(doc) ->
    ["Tests interleaved read and writes"];
interleaved_read_write(Config) when is_list(Config) ->
    ?line Dog = ?t:timetrap(?t:seconds(30)),
    %%
    ?line Dir = ?config(priv_dir, Config),
    ?line File = 
	filename:join(Dir, ?MODULE_STRING++"interleaved_read_write.txt"),
    ?line {ok,F1} = ?FILE_MODULE:open(File, [write]),
    ?line ok = ?FILE_MODULE:write(F1, "data---r1."), % 10 chars each
    ?line ok = ?FILE_MODULE:write(F1, "data---r2."),
    ?line ok = ?FILE_MODULE:write(F1, "data---r3."),
    ?line ok = ?FILE_MODULE:close(F1),
    ?line {ok,F2} = ?FILE_MODULE:open(File, [read, write]),
    ?line {ok, "data---r1."} = ?FILE_MODULE:read(F2, 10),
    ?line ok = ?FILE_MODULE:write(F2, "data---w2."),
    ?line ok = ?FILE_MODULE:close(F2),
    ?line {ok,F3} = ?FILE_MODULE:open(File, [read]),
    ?line {ok, "data---r1."} = ?FILE_MODULE:read(F3, 10),
    ?line {ok, "data---w2."} = ?FILE_MODULE:read(F3, 10),
    ?line {ok, "data---r3."} = ?FILE_MODULE:read(F3, 10),
    ?line eof = ?FILE_MODULE:read(F3, 1),
    ?line ok = ?FILE_MODULE:close(F2),
    %%
    ?line [] = flush(),
    ?line ?t:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

otp_5814(suite) ->
    [];
otp_5814(doc) ->
    ["OTP-5814. eval/consult/script return correct line numbers"];
otp_5814(Config) when is_list(Config) ->
    ?line Dog = ?t:timetrap(?t:seconds(10)),
    PrivDir = ?config(priv_dir, Config),
    File = filename:join(PrivDir, "otp_5814"),
    Path = [PrivDir],
    ?line ok = file:write_file(File, <<"{a,b,c}.
                                        a.
                                        b.
                                        c.
                                        {d,e,
                                        [}.">>),
    ?line {error, {6,erl_parse,_}} = file:eval(File),
    ?line {error, {6,erl_parse,_}} = file:consult(File),
    ?line {error, {6,erl_parse,_}} = file:path_consult(Path, File),
    ?line {error, {6,erl_parse,_}} = file:path_eval(Path, File),
    ?line {error, {6,erl_parse,_}} = file:script(File),
    ?line {error, {6,erl_parse,_}} = file:path_script(Path, File),

    ?line ok = file:write_file(File, <<>>),
    ?line {error, {1,file,undefined_script}} = file:path_script(Path, File),

    %% The error is not propagated...
    ?line ok = file:write_file(File, <<"a.
                                        b.
                                        1/0.">>),
    ?line {error, {3, file, {error, badarith, _}}} = file:eval(File),
    
    ?line ok = file:write_file(File, <<"erlang:raise(throw, apa, []).">>),
    ?line {error, {1, file, {throw, apa, _}}} = file:eval(File),

    file:delete(File),
    ?line ?t:timetrap_cancel(Dog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

otp_10852(suite) ->
    [];
otp_10852(doc) ->
    ["OTP-10852. +fnu and latin1 filenames"];
otp_10852(Config) when is_list(Config) ->
    Node = start_node(erl_pp_helper, "+fnu"),
    Dir = ?config(priv_dir, Config),
    B = filename:join(Dir, <<"\xE4">>),
    ok = rpc_call(Node, get_cwd, [B]),
    {error, no_translation} = rpc_call(Node, set_cwd, [B]),
    ok = rpc_call(Node, delete, [B]),
    ok = rpc_call(Node, rename, [B, B]),
    ok = rpc_call(Node, read_file_info, [B]),
    ok = rpc_call(Node, read_link_info, [B]),
    ok = rpc_call(Node, read_link, [B]),
    ok = rpc_call(Node, write_file_info, [B,#file_info{}]),
    ok = rpc_call(Node, list_dir, [B]),
    ok = rpc_call(Node, list_dir_all, [B]),
    ok = rpc_call(Node, read_file, [B]),
    ok = rpc_call(Node, make_link, [B,B]),
    ok = rpc_call(Node, make_symlink, [B,B]),
    ok = rpc_call(Node, delete, [B]),
    ok = rpc_call(Node, make_dir, [B]),
    ok = rpc_call(Node, del_dir, [B]),
    ok = rpc_call(Node, write_file, [B,B]),
    {ok, Fd} = rpc_call(Node, open, [B,[read]]),
    ok = rpc_call(Node, close, [Fd]),
    {ok,0} = rpc_call(Node, copy, [B,B]),
    {ok, Fd2, B} = rpc_call(Node, path_open, [["."], B, [read]]),
    ok = rpc_call(Node, close, [Fd2]),
    true = test_server:stop_node(Node),
    ok.

rpc_call(N, F, As) ->
    case rpc:call(N, ?FILE_MODULE, F, As) of
        {error, enotsup} -> ok;
        {error, enoent} -> ok;
        {error, badarg} -> ok;
        Else -> Else
    end.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

large_file(suite) ->
    [];
large_file(doc) ->
    ["Tests positioning in large files (> 4G)"];
large_file(Config) when is_list(Config) ->
    run_large_file_test(Config,
			fun(Name) -> do_large_file(Name) end,
			"_large_file").

do_large_file(Name) ->
    ?line Watchdog = ?t:timetrap(?t:minutes(20)),

    ?line S = "1234567890",
    L = length(S),
    R = lists:reverse(S),
    P = 1 bsl 32,
    Ss = lists:sort(S),
    Rs = lists:reverse(Ss),
    ?line {ok,F}  = ?FILE_MODULE:open(Name, [raw,read,write]),
    ?line ok      = ?FILE_MODULE:write(F, S),
    ?line {ok,P}  = ?FILE_MODULE:position(F, P),
    ?line ok      = ?FILE_MODULE:write(F, R),
    ?line {ok,0}  = ?FILE_MODULE:position(F, bof),
    ?line {ok,S}  = ?FILE_MODULE:read(F, L),
    ?line {ok,P}  = ?FILE_MODULE:position(F, {eof,-L}),
    ?line {ok,R}  = ?FILE_MODULE:read(F, L+1),
    ?line {ok,S}  = ?FILE_MODULE:pread(F, 0, L),
    ?line {ok,R}  = ?FILE_MODULE:pread(F, P, L+1),
    ?line ok      = ?FILE_MODULE:pwrite(F, 0, Ss),
    ?line ok      = ?FILE_MODULE:pwrite(F, P, Rs),
    ?line {ok,0}  = ?FILE_MODULE:position(F, bof),
    ?line {ok,Ss} = ?FILE_MODULE:read(F, L),
    ?line {ok,P}  = ?FILE_MODULE:position(F, {eof,-L}),
    ?line {ok,Rs} = ?FILE_MODULE:read(F, L+1),
    ?line ok      = ?FILE_MODULE:close(F),
    %% Reopen the file with 'append'; used to fail on Windows causing
    %% writes to go to the beginning of the file for files > 4GB.
    ?line PL = P + L,
    ?line PLL = PL + L,
    ?line {ok,F1}  = ?FILE_MODULE:open(Name, [raw,read,write,append]),
    ?line ok       = ?FILE_MODULE:write(F1, R),
    ?line {ok,PLL} = ?FILE_MODULE:position(F1, {cur,0}),
    ?line {ok,Rs}  = ?FILE_MODULE:pread(F1, P, L),
    ?line {ok,PL}  = ?FILE_MODULE:position(F1, {eof,-L}),
    ?line {ok,R}   = ?FILE_MODULE:read(F1, L+1),
    ?line ok       = ?FILE_MODULE:close(F1),
    %%
    ?line ?t:timetrap_cancel(Watchdog),
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

large_write(Config) when is_list(Config) ->
    run_large_file_test(Config,
			fun(Name) -> do_large_write(Name) end,
			"_large_write").

do_large_write(Name) ->
    Memsize = memsize(),
    io:format("Memsize = ~w Bytes~n", [Memsize]),
    case {erlang:system_info(wordsize),Memsize} of
	{4,_} ->
	    {skip,"Needs a 64-bit emulator"};
	{8,N} when N < 6 bsl 30 ->
	    {skip,
	     "This machine has < 6 GB  memory: "
	     ++integer_to_list(N)};
	{8,_} ->
	    Size = 4*1024*1024*1024+1,
	    Bin = <<0:Size/unit:8>>,
	    ok = file:write_file(Name, Bin),
	    {ok,#file_info{size=Size}} = file:read_file_info(Name),
	    ok
    end.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



response_analysis(Module, Function, Arguments) ->
    Parent = self(),
    ?line erlang:yield(), % Schedule out before test
    ?line Child = 
	spawn_link(
	  fun () ->
		  receive {Parent, start, Ts} -> ok end,
		  Stat = 
		      iterate(response_stat(response_stat(init, Ts),
					    erlang:now()), 
			      done,
			      fun (S) ->
				      erlang:yield(),
				      receive
					  {Parent, stop} ->
					      done
				      after 0 ->
					      response_stat(S, erlang:now())
				      end
			      end),
		  Parent ! {self(), stopped, response_stat(Stat, erlang:now())}
	  end),
    ?line Child ! {Parent, start, erlang:now()},
    ?line Result = apply(Module, Function, Arguments),
    ?line Child ! {Parent, stop},
    ?line {N, Sum, _, M, Max} = receive {Child, stopped, X} -> X end,
    ?line Mean_ms = (0.001*Sum) / (N-1),
    ?line Max_ms = 0.001 * Max,
    ?line Comment = 
	lists:flatten(
	  io_lib:format(
	    "Scheduling interval: Mean = ~.3f ms, "
	    ++"Max = ~.3f ms for no ~p of ~p.~n",
	    [Mean_ms, Max_ms, M, (N-1)])),
    ?line {Result, Comment}.
    


response_stat(init, Ts) ->
    {0, 0, Ts, 0, 0};
response_stat({N, Sum, {A1, B1, C1}, M, Max}, {A2, B2, C2} = Ts) ->
    D = C2-C1 + 1000000*((B2-B1) + 1000000*(A2-A1)),
    if D > Max ->
	    {N+1, Sum+D, Ts, N, D};
       true ->
	    {N+1, Sum+D, Ts, M, Max}
    end.



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%



%% This function is kept just for benchmarking reasons.
%% create_file/2 below is some 44 times faster.

create_file_slow(Name, N) when is_integer(N), N >= 0 ->
    ?line {ok, FD} = 
	?FILE_MODULE:open(Name, [raw, write, delayed_write, binary]),
    ?line ok = create_file_slow(FD, 0, N),
    ?line ok = ?FILE_MODULE:close(FD),
    ok.

create_file_slow(_FD, M, M) ->
    ok;
create_file_slow(FD, M, N) ->
    ok = ?FILE_MODULE:write(FD, <<M:32/unsigned>>),
    create_file_slow(FD, M+1, N).



%% Creates a file 'Name' containing 'N' unsigned 32 bit integers 
%% from 0 to N-1.

create_file(Name, N) when is_integer(N), N >= 0 ->
    ?line {ok, FD} = 
	?FILE_MODULE:open(Name, [raw, write, delayed_write, binary]),
    ?line ok = create_file(FD, 0, N),
    ?line ok = ?FILE_MODULE:close(FD),
    ok.

create_file(_FD, M, M) ->
    ok;
create_file(FD, M, N) when M + 1024 =< N ->
    create_file(FD, M, M + 1024, []),
    create_file(FD, M + 1024, N);
create_file(FD, M, N) ->
    create_file(FD, M, N, []).

create_file(FD, M, M, R) ->
    ok = ?FILE_MODULE:write(FD, R);
create_file(FD, M, N0, R) when M + 8 =< N0 ->
    N1  = N0-1,  N2  = N0-2,  N3  = N0-3,  N4  = N0-4, 
    N5  = N0-5,  N6  = N0-6,  N7  = N0-7,  N8  = N0-8, 
    create_file(FD, M, N8, 
		  [<<N8:32/unsigned,  N7:32/unsigned, 
		    N6:32/unsigned,  N5:32/unsigned, 
		    N4:32/unsigned,  N3:32/unsigned, 
		    N2:32/unsigned,  N1:32/unsigned>> | R]);
create_file(FD, M, N0, R) ->
    N1 = N0-1,
    create_file(FD, M, N1, [<<N1:32/unsigned>> | R]).



create_bin(M, N) when is_integer(M), is_integer(N), N >= 0, M >= 0 ->
    create_bin(M, M+N, []).

create_bin(N, N, R) ->
    list_to_binary(R);
create_bin(M, N0, R) when M+8 =< N0 ->
    N1  = N0-1,  N2  = N0-2,  N3  = N0-3,  N4  = N0-4, 
    N5  = N0-5,  N6  = N0-6,  N7  = N0-7,  N8  = N0-8, 
    create_bin(M, N8,
	       [<<N8:32/unsigned,  N7:32/unsigned, 
		 N6:32/unsigned,  N5:32/unsigned, 
		 N4:32/unsigned,  N3:32/unsigned, 
		 N2:32/unsigned,  N1:32/unsigned>> | R]);
create_bin(M, N0, R) ->
    N1 = N0-1,
    create_bin(M, N1, [<<N1:32/unsigned>> | R]).
    
    


verify_bin(<<>>, _, 0) ->
    true;
verify_bin(<<>>, _, _) ->
    false;
verify_bin(Bin, N, Cnt) ->
    N0 = N + 0, N1 = N + 1, N2 = N + 2, N3 = N + 3, 
    N4 = N + 4, N5 = N + 5, N6 = N + 6, N7 = N + 7, 
    case Bin of
	<<N0:32/unsigned, N1:32/unsigned, N2:32/unsigned, N3:32/unsigned, 
	 N4:32/unsigned, N5:32/unsigned, N6:32/unsigned, N7:32/unsigned,
	 B/binary>> ->
	    verify_bin(B, N+8, Cnt-8);
	<<N:32/unsigned, B/binary>> ->
	    verify_bin(B, N+1, Cnt-1);
	_ ->
	    false
    end.



verify_file(Name, N) when is_integer(N), N >= 0 ->
    case ?FILE_MODULE:open(Name, [raw, read, binary]) of
	{ok, FD} ->
	    Result = verify_file(FD, 0, 64*1024, N),
	    ok = ?FILE_MODULE:close(FD),
	    Result;
	Error ->
	    Error
    end.

verify_file(FD, N, _, N) ->
    case ?FILE_MODULE:read(FD, 1) of
	eof ->
	    true;
	{ok, _} ->
	    false
    end;
verify_file(FD, M, Cnt, N) when M+Cnt =< N ->
    case ?FILE_MODULE:read(FD, 4*Cnt) of
	{ok, Bin} ->
	    case verify_bin(Bin, M, Cnt) of
		true ->
		    verify_file(FD, M+Cnt, Cnt, N);
		false ->
		    false
	    end;
	_ ->
	    false
    end;
verify_file(FD, M, _Cnt, N) ->
    verify_file(FD, M, N-M, N).



subbin(Bin, M, N) ->
    <<_:M/binary, B:N/binary, _/binary>> = Bin,
    B.



write_file(Name, Data) ->
    case ?FILE_MODULE:open(Name, [raw, write, binary]) of
	{ok, FD} ->
	    Result = ?FILE_MODULE:write(FD, Data),
	    case {Result, ?FILE_MODULE:close(FD)} of
		{ok, R} -> R;
		_ -> Result
	    end;
	Error ->
	    Error
    end.

pwrite_file(Name, Data) ->
    case ?FILE_MODULE:open(Name, [raw, write, binary]) of
	{ok, FD} ->
	    Result = ?FILE_MODULE:pwrite(FD, Data),
	    case {Result, ?FILE_MODULE:close(FD)} of
		{ok, R} -> R;
		_ -> Result
	    end;
	Error ->
	    Error
    end.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Read_line tests
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


read_line_testdata(PrivDir) ->
    All0 = [{fun read_line_create0/1,"Testdata1.txt",5,10},
	   {fun read_line_create1/1,"Testdata2.txt",401,802},
	   {fun read_line_create2/1,"Testdata3.txt",1,2},
	   {fun read_line_create3/1,"Testdata4.txt",601,fail},
	   {fun read_line_create4/1,"Testdata5.txt",601,1002},
	   {fun read_line_create5/1,"Testdata6.txt",601,1202},
	   {fun read_line_create6/1,"Testdata7.txt",601,1202},
	   {fun read_line_create7/1,"Testdata8.txt",4001,8002}],
    [ {A,filename:join([PrivDir,B]),C,D} || {A,B,C,D} <- All0 ].

read_line_create_files(TestData) ->
    [ Function(File) || {Function,File,_,_} <- TestData ].

read_line_remove_files(TestData) ->
    [ file:delete(File) || {_Function,File,_,_} <- TestData ].

read_line_1(suite) -> 
    [];
read_line_1(doc) ->
    ["read_line with prim_file"];
read_line_1(Config) when is_list(Config) ->
    ?line PrivDir = ?config(priv_dir, Config),
    ?line All = read_line_testdata(PrivDir),
    ?line read_line_create_files(All),
    ?line [ begin 
		io:format("read_line_all: ~s~n",[File]),
		{X,_} = read_line_all(File),
		true
	    end || {_,File,X,_} <- All ],
    ?line [ begin 
		io:format("read_line_all_alternating: ~s~n",[File]),
		{Y,_} = read_line_all_alternating(File),
		true
	    end || {_,File,_,Y} <- All , Y =/= fail],
    ?line [ begin 
		io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
		{'EXIT',_} = (catch read_line_all_alternating(File)),
		true
	    end || {_,File,_,Y} <- All , Y =:= fail],
    ?line read_line_remove_files(All),
    ok.
read_line_2(suite) -> 
    [];
read_line_2(doc) ->
    ["read_line with file"];
read_line_2(Config) when is_list(Config) ->
    ?line PrivDir = ?config(priv_dir, Config),
    ?line All = read_line_testdata(PrivDir),
    ?line read_line_create_files(All),
    ?line [ begin 
		io:format("read_line_all: ~s~n",[File]),
		{X,_} = read_line_all2(File),
		true
	    end || {_,File,X,_} <- All ],
    ?line [ begin 
		io:format("read_line_all_alternating: ~s~n",[File]),
		{Y,_} = read_line_all_alternating2(File),
		true
	    end || {_,File,_,Y} <- All , Y =/= fail],
    ?line [ begin 
		io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
		{'EXIT',_} = (catch read_line_all_alternating2(File)),
		true
	    end || {_,File,_,Y} <- All , Y =:= fail],
    ?line read_line_remove_files(All),
    ok.
read_line_3(suite) -> 
    [];
read_line_3(doc) ->
    ["read_line with raw file"];
read_line_3(Config) when is_list(Config) ->
    ?line PrivDir = ?config(priv_dir, Config),
    ?line All = read_line_testdata(PrivDir),
    ?line read_line_create_files(All),
    ?line [ begin 
		io:format("read_line_all: ~s~n",[File]),
		{X,_} = read_line_all3(File),
		true
	    end || {_,File,X,_} <- All ],
    ?line [ begin 
		io:format("read_line_all_alternating: ~s~n",[File]),
		{Y,_} = read_line_all_alternating3(File),
		true
	    end || {_,File,_,Y} <- All , Y =/= fail],
    ?line [ begin 
		io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
		{'EXIT',_} = (catch read_line_all_alternating3(File)),
		true
	    end || {_,File,_,Y} <- All , Y =:= fail],
    ?line read_line_remove_files(All),
    ok.
read_line_4(suite) -> 
    [];
read_line_4(doc) ->
    ["read_line with raw buffered file"];
read_line_4(Config) when is_list(Config) ->
    ?line PrivDir = ?config(priv_dir, Config),
    ?line All = read_line_testdata(PrivDir),
    ?line read_line_create_files(All),
    ?line [ begin 
		io:format("read_line_all: ~s~n",[File]),
		{X,_} = read_line_all4(File),
		true
	    end || {_,File,X,_} <- All ],
    ?line [ begin 
		io:format("read_line_all_alternating: ~s~n",[File]),
		{Y,_} = read_line_all_alternating4(File),
		true
	    end || {_,File,_,Y} <- All , Y =/= fail],
    ?line [ begin 
		io:format("read_line_all_alternating (failing as should): ~s~n",[File]),
		{'EXIT',_} = (catch read_line_all_alternating4(File)),
		true
	    end || {_,File,_,Y} <- All , Y =:= fail],
    ?line read_line_remove_files(All),
    ok.

rl_lines() ->
    [ <<"hej">>,<<"hopp">>,<<"i">>,<<"lingon\rskogen">>].

read_line_create0(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ file:write(F,[R,<<"\r\n">>]) || R <- L ], 
    file:write(F,<<"Inget radslut\r">>),
    file:close(F).
read_line_create1(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ begin
	  [ file:write(F,[R,<<"\r\n">>]) || R <- L ], 
	  file:write(F,<<"Inget radslut\r">>)
      end || _ <- lists:seq(1,100)],
    file:close(F).
read_line_create2(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ begin
	  [ file:write(F,[R]) || R <- L ], 
	  file:write(F,<<"Inget radslut\r">>)
      end || _ <- lists:seq(1,200)],
    file:write(F,<<"\r\n">>),
    file:close(F).

read_line_create3(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ begin
	  file:write(F,<<"\r\n">>),
	  file:write(F,<<"\r\n">>),
	  [ file:write(F,[R,<<"\r\n">>]) || R <- L ], 
	  file:write(F,<<"Inget radslut\r">>)
      end || _ <- lists:seq(1,100)],
    file:close(F).

read_line_create4(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ begin
	  file:write(F,<<"\n">>),
	  file:write(F,<<"\n">>),
	  [ file:write(F,[R,<<"\r\n">>]) || R <- L ], 
	  file:write(F,<<"Inget radslut\r">>)
      end || _ <- lists:seq(1,100)],
    file:close(F).

read_line_create5(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ begin
	  file:write(F,<<"i\n">>),
	  file:write(F,<<"i\n">>),
	  [ file:write(F,[R,<<"\r\n">>]) || R <- L ], 
	  file:write(F,<<"Inget radslut\r">>)
      end || _ <- lists:seq(1,100)],
    file:close(F).

read_line_create6(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ begin
	  file:write(F,<<"i\r\n">>),
	  file:write(F,<<"i\r\n">>),
	  [ file:write(F,[R,<<"\r\n">>]) || R <- L ], 
	  file:write(F,<<"Inget radslut\r">>)
      end || _ <- lists:seq(1,100)],
    file:close(F).
read_line_create7(Filename) ->
    {ok,F} = file:open(Filename,[write]),
    L = rl_lines(),
    [ begin
	  [ file:write(F,[R,<<"\r\n">>]) || R <- L ], 
	  file:write(F,<<"Inget radslut\r">>)
      end || _ <- lists:seq(1,1000)],
    file:close(F).

read_line_all(Filename) ->
    {ok,F} = prim_file:open(Filename,[read,binary]),
    X=read_rl_lines(F),
    prim_file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.

read_line_all2(Filename) ->
    {ok,F} = file:open(Filename,[read,binary]),
    X=read_rl_lines2(F),
    file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.

read_line_all3(Filename) ->
    {ok,F} = file:open(Filename,[read,binary,raw]),
    X=read_rl_lines2(F),
    file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.
read_line_all4(Filename) ->
    {ok,F} = file:open(Filename,[read,binary,raw,{read_ahead,8192}]),
    X=read_rl_lines2(F),
    file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.

read_rl_lines(F) ->
    case prim_file:read_line(F) of
	eof ->
	    [];
	{error,X} ->
	    {error,X};
	List ->
	    [List | read_rl_lines(F)]
    end.

read_rl_lines2(F) ->
    case file:read_line(F) of
	eof ->
	    [];
	{error,X} ->
	    {error,X};
	List ->
	    [List | read_rl_lines2(F)]
    end.

read_line_all_alternating(Filename) ->
    {ok,F} = prim_file:open(Filename,[read,binary]),
    X=read_rl_lines(F,true),
    prim_file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.

read_line_all_alternating2(Filename) ->
    {ok,F} = file:open(Filename,[read,binary]),
    X=read_rl_lines2(F,true),
    file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.
read_line_all_alternating3(Filename) ->
    {ok,F} = file:open(Filename,[read,binary,raw]),
    X=read_rl_lines2(F,true),
    file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.
read_line_all_alternating4(Filename) ->
    {ok,F} = file:open(Filename,[read,binary,raw,{read_ahead,8192}]),
    X=read_rl_lines2(F,true),
    file:close(F),
    Bin = list_to_binary([B || {ok,B} <- X]),
    Bin = re:replace(list_to_binary([element(2,file:read_file(Filename))]),
		     "\r\n","\n",[global,{return,binary}]),
    {length(X),Bin}.

read_rl_lines(F,Alternate) ->
    case begin
	     case Alternate of
		 true -> prim_file:read(F,1);
		 false -> prim_file:read_line(F)
	     end 
	 end of
	eof ->
	    [];
	{error,X} ->
	    {error,X};
	List ->
	    [List | read_rl_lines(F,not Alternate)]
    end.
read_rl_lines2(F,Alternate) ->
    case begin
	     case Alternate of
		 true -> file:read(F,1);
		 false -> file:read_line(F)
	     end 
	 end of
	eof ->
	    [];
	{error,X} ->
	    {error,X};
	List ->
	    [List | read_rl_lines2(F,not Alternate)]
    end.


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

bytes(B, N)
  when is_integer(B), 0 =< B, B =< 255, is_integer(N), N > 2, N band 1 == 0 ->
    [bytes(B, N bsr 1), bytes(B, N bsr 1)];
bytes(B, 0)
  when is_integer(B), 0 =< B, B =< 255 ->
    [];
bytes(B, 2)
  when is_integer(B), 0 =< B, B =< 255 ->
    [B, B];
bytes(B, N)
  when is_integer(B), 0 =< B, B =< 255, is_integer(N), N > 0 ->
    [B, bytes(B, N-1)].


%% A simple loop construct.
%%
%% Calls 'Fun' with argument 'Start' first and then repeatedly with
%% its returned value (state) until 'Fun' returns 'Stop'. Then
%% the last state value that was not 'Stop' is returned.

iterate(Start, Done, Fun) when is_function(Fun) ->
    iterate(Start, Done, Fun, Start).

iterate(Done, Done, _Fun, I) ->
    I;
iterate(I, Done, Fun, _) ->
    iterate(Fun(I), Done, Fun, I).



flush() ->
    flush([]).

flush(Msgs) ->
    receive
	Msg ->
	    flush([Msg | Msgs])
    after 0 ->
	    lists:reverse(Msgs)
    end.

%%%
%%% Support for testing large files.
%%%

run_large_file_test(Config, Run, Name) ->
    case {os:type(),os:version()} of
	{{win32,nt},_} ->
	    do_run_large_file_test(Config, Run, Name);
	{{unix,sunos},OsVersion} when OsVersion < {5,5,1} ->
	    {skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"};
	{{unix,_},_} ->
	    N = disc_free(?config(priv_dir, Config)),
	    io:format("Free disk: ~w KByte~n", [N]),
	    if N < 5 * (1 bsl 20) ->
		    %% Less than 5 GByte free
		    {skip,"Less than 5 GByte free"};
	       true ->
		    do_run_large_file_test(Config, Run, Name)
	    end;
	_ -> 
	    {skip,"Only supported on Win32, Unix or SunOS >= 5.5.1"}
    end.


do_run_large_file_test(Config, Run, Name0) ->
    Name = filename:join(?config(priv_dir, Config),
			 ?MODULE_STRING ++ Name0),
    
    %% Set up a process that will delete this file.
    Tester = self(),
    Deleter = 
	spawn(
	  fun() ->
		  Mref = erlang:monitor(process, Tester),
		  receive
		      {'DOWN',Mref,_,_,_} -> ok;
		      {Tester,done} -> ok
		  end,
		  ?FILE_MODULE:delete(Name)
	  end),
    
    %% Run the test case.
    Res = Run(Name),

    %% Delete file and finish deleter process.
    Mref = erlang:monitor(process, Deleter),
    Deleter ! {Tester,done},
    receive {'DOWN',Mref,_,_,_} -> ok end,

    Res.

disc_free(Path) ->
    Data = disksup:get_disk_data(),
    {_,Tot,Perc} = hd(lists:filter(
			fun({P,_Size,_Full}) ->
				lists:prefix(filename:nativename(P),
					     filename:nativename(Path))
			end, lists:reverse(lists:sort(Data)))),
    round(Tot * (1-(Perc/100))).

memsize() ->
    {Tot,_Used,_}  = memsup:get_memory_data(),
    Tot.

%%%-----------------------------------------------------------------
%%% Utilities
rm_rf(Mod,Dir) ->
    case  Mod:read_link_info(Dir) of
	{ok, #file_info{type = directory}} ->
	    {ok, Content} = Mod:list_dir_all(Dir),
	    [ rm_rf(Mod,filename:join(Dir,C)) || C <- Content ],
	    Mod:del_dir(Dir),
	    ok;
	{ok, #file_info{}} ->
	    Mod:delete(Dir);
	_ ->
	    ok
    end.