diff options
Diffstat (limited to 'lib/kernel/src')
| -rw-r--r-- | lib/kernel/src/file_io_server.erl | 46 |
1 files changed, 39 insertions, 7 deletions
diff --git a/lib/kernel/src/file_io_server.erl b/lib/kernel/src/file_io_server.erl index 5b2cae6b02..9c425d2175 100644 --- a/lib/kernel/src/file_io_server.erl +++ b/lib/kernel/src/file_io_server.erl @@ -214,26 +214,58 @@ file_request({allocate, Offset, Length}, #state{handle = Handle} = State) -> Reply = ?PRIM_FILE:allocate(Handle, Offset, Length), {reply, Reply, State}; +file_request({pread,At,Sz}, State) + when At =:= cur; + At =:= {cur,0} -> + case get_chars(Sz, latin1, State) of + {reply,Reply,NewState} + when is_list(Reply); + is_binary(Reply) -> + {reply,{ok,Reply},NewState}; + {stop,_,Reply,NewState} -> + {error,Reply,NewState}; + Other -> + Other + end; file_request({pread,At,Sz}, - #state{handle=Handle,buf=Buf,read_mode=ReadMode}=State) -> + #state{handle=Handle,buf=Buf}=State) -> case position(Handle, At, Buf) of {error,_} = Reply -> {error,Reply,State}; _ -> - case ?PRIM_FILE:read(Handle, Sz) of - {ok,Bin} when ReadMode =:= list -> - std_reply({ok,binary_to_list(Bin)}, State); - Reply -> - std_reply(Reply, State) + case get_chars(Sz, latin1, State#state{buf= <<>>}) of + {reply,Reply,NewState} + when is_list(Reply); + is_binary(Reply) -> + {reply,{ok,Reply},NewState}; + {stop,_,Reply,NewState} -> + {error,Reply,NewState}; + Other -> + Other end end; +file_request({pwrite,At,Data}, + #state{buf= <<>>}=State) + when At =:= cur; + At =:= {cur,0} -> + case put_chars(Data, latin1, State) of + {stop,_,Reply,NewState} -> + {error,Reply,NewState}; + Other -> + Other + end; file_request({pwrite,At,Data}, #state{handle=Handle,buf=Buf}=State) -> case position(Handle, At, Buf) of {error,_} = Reply -> {error,Reply,State}; _ -> - std_reply(?PRIM_FILE:write(Handle, Data), State) + case put_chars(Data, latin1, State) of + {stop,_,Reply,NewState} -> + {error,Reply,NewState}; + Other -> + Other + end end; file_request(datasync, #state{handle=Handle}=State) -> |