Looks like the UEFI Shell spec needs an update, since it cannot claim this.
The UEFI spec allows for Boot Load Option variables (Boot####), which can contain OptionalData to be passed to a .efi application. The OptionalData does not have to contain the .efi file name. The UEFI Shell .efi could be launched as a boot option (EX: .efi in the FV, or from a filesystem), and a system firmware implementation could choose to populate OptionalData with supported command-line options (EX: -nostartup). This would result in Argv[0] being a command-line option. There is no UEFI requirement that the OptionalData provide something like shell.efi as the first argument. Do you agree with this use case and need to change the wording in the UEFI Shell spec? Thanks, Chris From: Olivier Martin [mailto:[email protected]] Sent: Wednesday, April 02, 2014 10:43 AM To: 'Carsey, Jaben'; Brendan Jackman Cc: Phillips, Chris J (BCS CFE); [email protected] Subject: RE: ShellPkg: Fix command-line parsing to start with Argv[0] when comparing passed-in options The UEFI Shell Spec 2.0 says "The first entry in the array is always the full file path of the executable." (see 2.3 EFI_SHELL_PARAMETERS_PROTOCOL). In which case can we get an option in Argv[0] ? From: Carsey, Jaben [mailto:[email protected]] Sent: 01 April 2014 23:23 To: Brendan Jackman; Olivier Martin Cc: Phillips, Chris J (BCS CFE); [email protected]<mailto:[email protected]>; Carsey, Jaben Subject: RE: ShellPkg: Fix command-line parsing to start with Argv[0] when comparing passed-in options That patch looks good to me. Reviewed-by: Jaben Carsey <[email protected]<mailto:[email protected]>> Brendan or Olivier, this is the same part of the shell that you made a recent change to. Can one of you please review this patch? I will wait to commit this patch until at least Friday the 4th of April to give you time to review it. -Jaben From: Phillips, Chris J (BCS CFE) [mailto:[email protected]] Sent: Tuesday, April 01, 2014 3:07 PM To: Carsey, Jaben; [email protected]<mailto:[email protected]> Subject: ShellPkg: Fix command-line parsing to start with Argv[0] when comparing passed-in options Importance: High Please review the attached patch file. This update resolves an issue where a UEFI Shell boot option is created with OptionalData that contains UEFI Shell spec defined command-line options starting in Argv[0]. The prior code change skipped processing the first passed-in option. Thanks, Chris ShellPkg: Fix command-line parsing to start with Argv[0] when comparing passed-in options Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Chris Phillips <[email protected]<mailto:[email protected]>>
------------------------------------------------------------------------------
_______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel
