The patch titled
Subject: fs: make binfmt support for #! scripts modular and removable
has been added to the -mm tree. Its filename is
fs-make-binfmt-support-for-scripts-modular-and-removable.patch
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------------------------------------------------------
From: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Subject: fs: make binfmt support for #! scripts modular and removable
Add a new configuration option CONFIG_BINFMT_SCRIPT to configure support
for interpreted scripts starting with "#!"; allow compiling out that
support, or building it as a module. Embedded systems running exclusively
compiled binaries could leave this support out, and systems that don't
need scripts before mounting the root filesystem can build this as a
module.
Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/Kconfig.binfmt | 14 ++++++++++++++
fs/Makefile | 5 +----
2 files changed, 15 insertions(+), 4 deletions(-)
diff -puN fs/Kconfig.binfmt~fs-make-binfmt-support-for-scripts-modular-and-removable fs/Kconfig.binfmt
--- a/fs/Kconfig.binfmt~fs-make-binfmt-support-for-scripts-modular-and-removable
+++ a/fs/Kconfig.binfmt
@@ -65,6 +65,20 @@ config CORE_DUMP_DEFAULT_ELF_HEADERS
This config option changes the default setting of coredump_filter
seen at boot time. If unsure, say Y.
+config BINFMT_SCRIPT
+ tristate "Kernel support for scripts starting with #!"
+ default y
+ help
+ Say Y here if you want to execute interpreted scripts starting with
+ #! followed by the path to an interpreter.
+
+ You can build this support as a module; however, until that module
+ gets loaded, you cannot run scripts. Thus, if you want to load this
+ module from an initramfs, the portion of the initramfs before loading
+ this module must consist of compiled binaries only.
+
+ Most systems will not boot if you say M or N here. If unsure, say Y.
+
config BINFMT_FLAT
bool "Kernel support for flat binaries"
depends on !MMU && (!FRV || BROKEN)
diff -puN fs/Makefile~fs-make-binfmt-support-for-scripts-modular-and-removable fs/Makefile
--- a/fs/Makefile~fs-make-binfmt-support-for-scripts-modular-and-removable
+++ a/fs/Makefile
@@ -34,10 +34,7 @@ obj-$(CONFIG_COMPAT) += compat.o compat
obj-$(CONFIG_BINFMT_AOUT) += binfmt_aout.o
obj-$(CONFIG_BINFMT_EM86) += binfmt_em86.o
obj-$(CONFIG_BINFMT_MISC) += binfmt_misc.o
-
-# binfmt_script is always there
-obj-y += binfmt_script.o
-
+obj-$(CONFIG_BINFMT_SCRIPT) += binfmt_script.o
obj-$(CONFIG_BINFMT_ELF) += binfmt_elf.o
obj-$(CONFIG_COMPAT_BINFMT_ELF) += compat_binfmt_elf.o
obj-$(CONFIG_BINFMT_ELF_FDPIC) += binfmt_elf_fdpic.o
_
Patches currently in -mm which might be from josh@xxxxxxxxxxxxxxxx are
fs-dont-compile-in-drop_cachesc-when-config_sysctl=n.patch
fs-make-binfmt-support-for-scripts-modular-and-removable.patch
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