/proc/config.gz patch

Roderich Schupp (rsch@ExperTeam.de)
Sun, 31 May 1998 18:25:28 +0200

Hi,
I suggest replacing the makeproconfig stuff (writing a C file with
an array initializer from C or Perl or whatever) by a linker trick (cf.
arch/i386/boot/compressed/Makefile). Referring to Nicholas version
dubbed #2 this would look like:

kernel/Makefile:

config.o:
sed -n 's/^COFIG_//p' $TOPDIR/.config | gzip -9 >config.gz.tmp
echo "SECTIONS { .data : { config_gz_len = .; \
LONG(config_gz_end - config_gz) \
config_gz = .; *(.data) \
config_gz_end = .; }}" > config.lnk
$(LD) -r -o config.o -b binary config.gz.tmp \
-b elf32-i386 -T config.lnk

and get_proc_config (goes somewhere into fs/proc/array.c) becomes:

extern char* config_gz[];
extern long config_gz_len;
int get_proc_config(char *page) {
memcpy(page, config_gz, config_gz_len);
return config_gz_len;
}

The only problem with this is that the ld option `-b elf32-i386' is
architecture specific and nobody has put it (yet) into a make variable
to be set in arch/$(ARCH)/Makefile.
Cheers, Roderich

--
             "Report all obscene mail to your Potsmaster"
Roderich Schupp                 mailto:rsch@ExperTeam.de
ExperTeam GmbH                  http://www.experteam.de/
Munich, Germany                 linux:2.1.103






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