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Re: [PATCH 2/3] Add a file_exec_file_name RPC


From: Carl Fredrik Hammar
Subject: Re: [PATCH 2/3] Add a file_exec_file_name RPC
Date: Mon, 19 Jul 2010 10:34:58 +0200
User-agent: Mutt/1.5.20 (2009-06-14)

On Fri, Jul 16, 2010 at 12:15:06PM +0200, Emilio Pozuelo Monfort wrote:
> >From 3804a36fcf95a3fd588ce67a08a36346134b8d1f Mon Sep 17 00:00:00 2001
> From: Emilio Pozuelo Monfort <address@hidden>
> Date: Wed, 26 May 2010 01:27:40 +0200
> Subject: [PATCH 2/3] Add a file_exec_file_name RPC
> 
>       * hurd/fs.defs (file_exec_file_name): New RPC.
>       (file_exec): Label as deprecated.
> 
>       * libdiskfs/file-exec.c (diskfs_S_file_exec_file_name):
>       New function.
>       * libnetfs/file-exec.c (netfs_S_file_exec_file_name):
>       Likewise.
>       * libtrivfs/file-exec.c (trivfs_S_file_exec_file_name):
>       Likewise.
>       * trans/fakeroot.c (netfs_S_file_exec_file_name): Likewise.
> 
>       * utils/login.c: Call file_exec_file_name, and fallback to
>       file_exec_file_name if necessary.
>       * libfshelp/start-translator-long.c: Likewise.
>       * exec/hashexec.c: Likewise.
>       * init/init.c: Likewise.
>       * trans/fakeroot.c: Likewise.
> 
>       * doc/hurd.texi: Change file_exec with file_exec_file_name.
>       * hurd/hurd_types.h: Likewise.
>       * libdiskfs/boot-start.c: Likewise.
>       * TODO: Likewise.

Again no leading tabs.  You don't mention changes to the old
implementations but since most changes are mechanical you can probably
get away with something like this:

* hurd/fs.defs (file_exec): Deprecate in favor of...
(file_exec_file_name): ...this new RPC.
Change all implementations and forward old implementations to
the new version.  Change all callers but fallback to old version.
Change comments and documentation.

I should've thought of this before you wrote the ChangeLog, sorry.

> @@ -133,14 +167,28 @@ netfs_S_file_exec (struct protid *cred,
>         if (newpi)
>           {
>             right = ports_get_send_right (newpi);
> -           err = exec_exec (_netfs_exec,
> -                            right, MACH_MSG_TYPE_COPY_SEND,
> -                            task, flags, argv, argvlen, envp, envplen,
> -                            fds, MACH_MSG_TYPE_COPY_SEND, fdslen,
> -                            portarray, MACH_MSG_TYPE_COPY_SEND, portarraylen,
> -                            intarray, intarraylen,
> -                            deallocnames, deallocnameslen,
> -                            destroynames, destroynameslen);
> +           err = exec_exec_file_name (_netfs_exec,
> +                                      right, MACH_MSG_TYPE_COPY_SEND,
> +                                      task, flags, filename,
> +                                      argv, argvlen, envp, envplen,
> +                                      fds, MACH_MSG_TYPE_COPY_SEND, fdslen,
> +                                      portarray, MACH_MSG_TYPE_COPY_SEND,
> +                                      portarraylen,
> +                                      intarray, intarraylen,
> +                                      deallocnames, deallocnameslen,
> +                                      destroynames, destroynameslen);
> +           /* For backwards compatibility.  Just drop it when we kill
> +              file_exec.  */
> +           if (err == MIG_BAD_ID)
> +             err = exec_exec (_netfs_exec,
> +                              right, MACH_MSG_TYPE_COPY_SEND,
> +                              task, flags, argv, argvlen, envp, envplen,
> +                              fds, MACH_MSG_TYPE_COPY_SEND, fdslen,
> +                              portarray, MACH_MSG_TYPE_COPY_SEND, 
> portarraylen,

Hmm, seems I missed this long line.  You might as well fix it since you
need to resend the patch anyway.

Regards,
  Fredrik



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