Hi guys,
Now I need your help. I've located the chunk of code that's failing but I have
no idea what's exactly it is trying to do (see listing below). Obviously, it
is testing for existence of all kernel modules for the filesystems listed
in /proc/filesystem, but why is it failing if the corresponding module DOES
EXIST? My Fedora 7 installation has support for all filesystems built as
modules (I think this was the case for the last couple of years already), so
the test ultimately fails. Still, I can't figure out how it might succeed at
all and what is its purpose. And needless to say -- there is zero comments in
the source code (how nice!).
Cheers,
Ivan
--- /usr/lib/systemimager/perl/SystemImager/UseYourOwnKernel.pm ---
my @filesystems;
my $fs;
my $uname_r = get_uname_r();
my $modules_dir = "/lib/modules/$uname_r";
my $file = "/proc/filesystems";
open(FILESYSTEMS,"<$file") or die("Couldn't open $file for reading.");
while (<FILESYSTEMS>) {
chomp;
push (@filesystems, $_) if (m/(cramfs|ext2|ext3|reiserfs|xfs|
jfs)/);
}
close(FILESYSTEMS);
# cramfs
if ((grep { /cramfs/ } @filesystems)
and (! -e "$modules_dir/kernel/fs/cramfs/cramfs.o")
and (! -e "$modules_dir/kernel/fs/cramfs/cramfs.ko")
and (! -e "$modules_dir/kernel/fs/cramfs/cramfs.ko.gz")
) {
$fs = "cramfs";
}
# ext2
elsif ((grep { /ext2/ } @filesystems)
and (! -e "$modules_dir/kernel/fs/ext2/ext2.o")
and (! -e "$modules_dir/kernel/fs/ext2/ext2.ko")
and (! -e "$modules_dir/kernel/fs/ext2/ext2.ko.gz")
) {
$fs = "ext2";
}
# ext3
elsif ((grep { /ext3/ } @filesystems)
and (! -e "$modules_dir/kernel/fs/ext3/ext3.o")
and (! -e "$modules_dir/kernel/fs/ext3/ext3.ko")
and (! -e "$modules_dir/kernel/fs/ext3/ext3.ko.gz")
) {
$fs = "ext3";
}
<...identical tests for other fs'es skipped...>
unless(defined $fs) {
die("Can't determine the appropriate filesystem to use for an
initrd.");
}
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