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open_rawresource(3) Arcan Lua API open_rawresource(3)

open_rawresource - Open a private or shared resource for reading/writing

success_bool
open_rawresource( resstr )

Each session can have one- globally opened and synchronously managed text file for working with in a rather limited fashion, primarily intended for debugging or quick temporary hacks. Typically, user/appl data should be stored in the database if at all possible, and binary data should only be in forms that the indirect functions can working with (like load_image etc.). Other I/O operations e.g. named pipes should go through the open_nonblock style functions.

1
If the resource exists, it will be opened in a read-only mode.
2
If the resource doesn't exist, it will be created and opened for writing (in appl, shared resources are read-only).
3
This function is blocking, and should only be used where possible I/O stalls is desired.

function open_rawresource0()
      if (open_rawresource("test.txt")) then
            print("resource opened");
      else
            print("couldn't open resource");
      end
end


function open_rawresource0()
      if (open_rawresource("../../../../../../../etc/passwd")) then
            print("danger will robinson!");
      end
end

close_rawresource(3) read_rawresource(3) zap_rawresource(3) open_nonblock(3)

June 2022 resource
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