RSTYXD(8)                                               RSTYXD(8)

     NAME
          rstyxd, styxd - Styx-based remote execution and file service

     SYNOPSIS
          auxi/rstyxd alg ...

          auxi/styxd alg ...

     DESCRIPTION
          These services are normally started by svc(8) in response to
          incoming network calls.  Each expects the standard input to
          be connected to the client; unusually, it is both read and
          written.

          Both commands first authenticate the incoming call using
          keyring-auth(2) via security-auth(2). On successful authori-
          sation, the server sets its user identity to that of the
          caller, and the client can request that a digest and/or
          encryption algorithm be applied using ssl(3) to protect the
          data exchanged with the server.  Each alg names a digest or
          encryption algorithm that the server will allow the client
          to use, in any form accepted by ssl; the special name none
          is usually listed, to allow the client to choose not to use
          ssl.

          Styxd provides Styx file service to its client.  Having
          authorised the client and optionally established ssl, as
          described above, it exports its name space (usually the name
          space inherited from svc(8)) on the connection using
          Sys->export (see sys-dial(2)).

          Rstyxd provides a remote-execution service.  Having autho-
          rised the client and optionally established ssl, as
          described above, it reads a single line from its standard
          input.  The line contains a decimal value that is the count
          of the number of bytes that follow, which rstyxd reads as a
          utf(6)-encoded string.  The string contains a command, which
          is parsed into arguments, following the quoting conventions
          of sh(1). The first argument is the command name.  Rstyxd
          prepares a modified name space in which to run the command.
          It mounts the connection (standard input) on /n/client,
          binds /n/client/dev onto /dev, and opens the new /dev/cons
          (ie, the remote client's /dev/cons) on file descriptors 0, 1
          and 2.  Finally, it executes the command.

     FILES
          /n/client                  mount point used by rstyxd
          /usr/user/keyring/default  server's authentication data when
                                     svc(8) run as given user

     Page 1                       Plan 9            (printed 10/29/25)

     RSTYXD(8)                                               RSTYXD(8)

     SOURCE
          /appl/cmd/auxi/rstyxd.b
          /appl/cmd/auxi/styxd.b

     SEE ALSO
          keyring-auth(2), security-auth(2), getauthinfo(8)

     Page 2                       Plan 9            (printed 10/29/25)