Re: [PATCH] ShellPkg: Create a homefilesystem environment variable

["Carsey, Jaben" <jaben.carsey@intel.com>]

Pushed.
c0b1f749ef1304810ed4ea58ded65b7f41d79d3e

> -----Original Message-----
> From: Carsey, Jaben
> Sent: Wednesday, October 03, 2018 11:15 AM
> To: 'Jim.Dailey@dell.com' <Jim.Dailey@dell.com>; edk2-devel@lists.01.org
> Subject: RE: [edk2] [PATCH] ShellPkg: Create a homefilesystem environment
> variable
> 
> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
> 
> > -----Original Message-----
> > From: Jim.Dailey@dell.com [mailto:Jim.Dailey@dell.com]
> > Sent: Wednesday, October 03, 2018 9:02 AM
> > To: edk2-devel@lists.01.org
> > Cc: Carsey, Jaben <jaben.carsey@intel.com>; Ni, Ruiyu
> <ruiyu.ni@intel.com>
> > Subject: [edk2] [PATCH] ShellPkg: Create a homefilesystem environment
> > variable
> > Importance: High
> >
> > Create a homefilesystem environment variable whose value is the file
> > system on which the executing shell is located. For example: "FS14:".
> >
> > This eliminates the need for people to have to try and find the "boot"
> > file system in their startup script.  After this change they can simply
> > execute %homefilesystem% to set the cwd to the root of the file system
> > where the shell is located.
> >
> > A future enhancement could be to add "homefilesystem" to the list of
> > predefined, read-only variables listed in the EfiShellSetEnv function of
> > file ShellProtocol.c
> >
> > Contributed-under: TianoCore Contribution Agreement 1.1
> > Signed-off-by: Jim Dailey <jim_dailey@dell.com>
> > ---
> >  ShellPkg/Application/Shell/Shell.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/ShellPkg/Application/Shell/Shell.c
> > b/ShellPkg/Application/Shell/Shell.c
> > index 3f3bcbb4b0..6185b6ac80 100644
> > --- a/ShellPkg/Application/Shell/Shell.c
> > +++ b/ShellPkg/Application/Shell/Shell.c
> > @@ -1169,6 +1169,8 @@ LocateStartupScript (
> >        *TempSpot = CHAR_NULL;
> >      }
> >
> > +    InternalEfiShellSetEnv(L"homefilesystem", StartupScriptPath, TRUE);
> > +
> >      StartupScriptPath = StrnCatGrow (&StartupScriptPath, &Size,
> > ((FILEPATH_DEVICE_PATH *)FileDevicePath)->PathName, 0);
> >      PathRemoveLastItem (StartupScriptPath);
> >      StartupScriptPath = StrnCatGrow (&StartupScriptPath, &Size,
> > mStartupScript, 0);
> > --
> > 2.17.0.windows.1