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Subject[PATCH] Consolidate binfmt choices in Kconfig

The full patch is around 60k, and is available from
http://ftp.linux.org.uk/pub/linux/willy/patches/binfmt-Kconfig.diff

21 files changed, 117 insertions(+), 922 deletions(-)

It's very repetitive, so to give a flavour for it, here's i386, m68knommu
and fs/Kconfig.binfmt. I rewrote the BINFMT_AOUT helptext to bring it
into this decade.

Comments welcomed; I'll send it to Linus tomorrow if I don't hear anything.

Index: arch/i386/Kconfig
===================================================================
RCS file: /var/cvs/linux-2.5/arch/i386/Kconfig,v
retrieving revision 1.22
diff -u -p -r1.22 Kconfig
--- arch/i386/Kconfig 27 May 2003 17:21:14 -0000 1.22
+++ arch/i386/Kconfig 10 Jun 2003 18:48:27 -0000
@@ -1176,81 +1176,7 @@ config KCORE_AOUT

endchoice

-config BINFMT_AOUT
- tristate "Kernel support for a.out binaries"
- ---help---
- A.out (Assembler.OUTput) is a set of formats for libraries and
- executables used in the earliest versions of UNIX. Linux used the
- a.out formats QMAGIC and ZMAGIC until they were replaced with the
- ELF format.
-
- As more and more programs are converted to ELF, the use for a.out
- will gradually diminish. If you disable this option it will reduce
- your kernel by one page. This is not much and by itself does not
- warrant removing support. However its removal is a good idea if you
- wish to ensure that absolutely none of your programs will use this
- older executable format. If you don't know what to answer at this
- point then answer Y. If someone told you "You need a kernel with
- QMAGIC support" then you'll have to say Y here. You may answer M to
- compile a.out support as a module and later load the module when you
- want to use a program or library in a.out format. The module will be
- called binfmt_aout. Saying M or N here is dangerous though,
- because some crucial programs on your system might still be in A.OUT
- format.
-
-config BINFMT_ELF
- tristate "Kernel support for ELF binaries"
- ---help---
- ELF (Executable and Linkable Format) is a format for libraries and
- executables used across different architectures and operating
- systems. Saying Y here will enable your kernel to run ELF binaries
- and enlarge it by about 13 KB. ELF support under Linux has now all
- but replaced the traditional Linux a.out formats (QMAGIC and ZMAGIC)
- because it is portable (this does *not* mean that you will be able
- to run executables from different architectures or operating systems
- however) and makes building run-time libraries very easy. Many new
- executables are distributed solely in ELF format. You definitely
- want to say Y here.
-
- Information about ELF is contained in the ELF HOWTO available from
- <http://www.tldp.org/docs.html#howto>.
-
- If you find that after upgrading from Linux kernel 1.2 and saying Y
- here, you still can't run any ELF binaries (they just crash), then
- you'll have to install the newest ELF runtime libraries, including
- ld.so (check the file <file:Documentation/Changes> for location and
- latest version).
-
- If you want to compile this as a module ( = code which can be
- inserted in and removed from the running kernel whenever you want),
- say M here and read <file:Documentation/modules.txt>. The module
- will be called binfmt_elf. Saying M or N here is dangerous because
- some crucial programs on your system might be in ELF format.
-
-config BINFMT_MISC
- tristate "Kernel support for MISC binaries"
- ---help---
- If you say Y here, it will be possible to plug wrapper-driven binary
- formats into the kernel. You will like this especially when you use
- programs that need an interpreter to run like Java, Python or
- Emacs-Lisp. It's also useful if you often run DOS executables under
- the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
- <http://www.tldp.org/docs.html#howto>). Once you have
- registered such a binary class with the kernel, you can start one of
- those programs simply by typing in its name at a shell prompt; Linux
- will automatically feed it to the correct interpreter.
-
- You can do other nice things, too. Read the file
- <file:Documentation/binfmt_misc.txt> to learn how to use this
- feature, and <file:Documentation/java.txt> for information about how
- to include Java support.
-
- You must say Y to "/proc file system support" (CONFIG_PROC_FS) to
- use this part of the kernel.
-
- You may say M here for module support and later load the module when
- you have use for it; the module is called binfmt_misc. If you
- don't know what to answer at this point, say Y.
+source "fs/Kconfig.binfmt"

endmenu

Index: arch/m68knommu/Kconfig
===================================================================
RCS file: /var/cvs/linux-2.5/arch/m68knommu/Kconfig,v
retrieving revision 1.10
diff -u -p -r1.10 Kconfig
--- arch/m68knommu/Kconfig 27 May 2003 17:21:31 -0000 1.10
+++ arch/m68knommu/Kconfig 10 Jun 2003 19:39:27 -0000
@@ -501,16 +501,7 @@ config KCORE_AOUT
config KCORE_ELF
default y

-config BINFMT_FLAT
- tristate "Kernel support for flat binaries"
- help
- Support uClinux FLAT format binaries.
-
-config BINFMT_ZFLAT
- bool " Enable ZFLAT support"
- depends on BINFMT_FLAT
- help
- Supoprt FLAT format compressed binaries
+source "fs/Kconfig.binfmt"

endmenu

Index: fs/Kconfig.binfmt
===================================================================
RCS file: fs/Kconfig.binfmt
diff -N fs/Kconfig.binfmt
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ fs/Kconfig.binfmt 12 Jun 2003 17:01:08 -0000
@@ -0,0 +1,96 @@
+config BINFMT_ELF
+ tristate "Kernel support for ELF binaries"
+ depends on MMU
+ default y
+ ---help---
+ ELF (Executable and Linkable Format) is a format for libraries and
+ executables used across different architectures and operating
+ systems. Saying Y here will enable your kernel to run ELF binaries
+ and enlarge it by about 13 KB. ELF support under Linux has now all
+ but replaced the traditional Linux a.out formats (QMAGIC and ZMAGIC)
+ because it is portable (this does *not* mean that you will be able
+ to run executables from different architectures or operating systems
+ however) and makes building run-time libraries very easy. Many new
+ executables are distributed solely in ELF format. You definitely
+ want to say Y here.
+
+ Information about ELF is contained in the ELF HOWTO available from
+ <http://www.tldp.org/docs.html#howto>.
+
+ If you find that after upgrading from Linux kernel 1.2 and saying Y
+ here, you still can't run any ELF binaries (they just crash), then
+ you'll have to install the newest ELF runtime libraries, including
+ ld.so (check the file <file:Documentation/Changes> for location and
+ latest version).
+
+ If you want to compile this as a module ( = code which can be
+ inserted in and removed from the running kernel whenever you want),
+ say M here and read <file:Documentation/modules.txt>. The module
+ will be called binfmt_elf. Saying M or N here is dangerous because
+ some crucial programs on your system might be in ELF format.
+
+config BINFMT_FLAT
+ tristate "Kernel support for flat binaries"
+ depends on !MMU
+ help
+ Support uClinux FLAT format binaries.
+
+config BINFMT_ZFLAT
+ bool " Enable ZFLAT support"
+ depends on BINFMT_FLAT
+ help
+ Support FLAT format compressed binaries
+
+config BINFMT_AOUT
+ tristate "Kernel support for a.out binaries"
+ depends on X86 || ALPHA || ARM || M68K || MIPS || SPARC
+ ---help---
+ A.out (Assembler.OUTput) is a set of formats for libraries and
+ executables used in the earliest versions of UNIX. Linux used the
+ a.out formats QMAGIC and ZMAGIC until they were replaced with the
+ ELF format.
+
+ The conversion to ELF started in 1995. This option is primarily
+ provided for historical interest and for the benefit of those
+ who need to run binaries from that era.
+
+ Most people should answer N here. If you think you may have
+ occasional use for this format, enable module support above
+ and answer M here to compile this support as a module called
+ binfmt_aout.
+
+ If any crucial components of your system (such as /sbin/init
+ or /lib/ld.so) are still in a.out format, you will have to
+ say Y here.
+
+config BINFMT_SOM
+ tristate "Kernel support for SOM binaries"
+ depends on PARISC && HPUX
+ help
+ SOM is a binary executable format inherited from HP/UX. Say
+ Y here to be able to load and execute SOM binaries directly.
+
+config BINFMT_MISC
+ tristate "Kernel support for MISC binaries"
+ ---help---
+ If you say Y here, it will be possible to plug wrapper-driven binary
+ formats into the kernel. You will like this especially when you use
+ programs that need an interpreter to run like Java, Python or
+ Emacs-Lisp. It's also useful if you often run DOS executables under
+ the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
+ <http://www.tldp.org/docs.html#howto>). Once you have
+ registered such a binary class with the kernel, you can start one of
+ those programs simply by typing in its name at a shell prompt; Linux
+ will automatically feed it to the correct interpreter.
+
+ You can do other nice things, too. Read the file
+ <file:Documentation/binfmt_misc.txt> to learn how to use this
+ feature, and <file:Documentation/java.txt> for information about how
+ to include Java support.
+
+ You must say Y to "/proc file system support" (CONFIG_PROC_FS) to
+ use this part of the kernel.
+
+ You may say M here for module support and later load the module when
+ you have use for it; the module is called binfmt_misc. If you
+ don't know what to answer at this point, say Y.
--
"It's not Hollywood. War is real, war is primarily not about defeat or
victory, it is about death. I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk
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