From 70578ff3367dd4ad8f212a9b5c05cffadabf39a8 Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Wed, 20 Apr 2022 09:58:03 -0500
Subject: binfmt_flat: Remove shared library support

In a recent discussion[1] it was reported that the binfmt_flat library
support was only ever used on m68k and even on m68k has not been used
in a very long time.

The structure of binfmt_flat is different from all of the other binfmt
implementations because of this shared library support and it made
life and code review more effort when I refactored the code in fs/exec.c.

Since in practice the code is dead remove the binfmt_flat shared library
support and make maintenance of the code easier.

[1] https://lkml.kernel.org/r/81788b56-5b15-7308-38c7-c7f2502c4e15@linux-m68k.org

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARM
Tested-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/87levzzts4.fsf_-_@email.froward.int.ebiederm.org
---
 fs/Kconfig.binfmt | 6 ------
 1 file changed, 6 deletions(-)

(limited to 'fs/Kconfig.binfmt')

diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 21c6332fa785..32dff7ba3dda 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -142,12 +142,6 @@ config BINFMT_ZFLAT
 	help
 	  Support FLAT format compressed binaries
 
-config BINFMT_SHARED_FLAT
-	bool "Enable shared FLAT support"
-	depends on BINFMT_FLAT
-	help
-	  Support FLAT shared libraries
-
 config HAVE_AOUT
        def_bool n
 
-- 
cgit