Some will have noticed that I'm having a difficulty with f9 kernels.
In order to have a poke around and see what I can see, I've been trying
to insert anaconda into the initrd so as to get a shell.
Unfortunately, RH/Fedora uses nash, and nash is, er, not a shell.
Here is how I make a new batch of initrds:
[root@localhost ~]# for K in $(for k in $(rpm -q kernel) ; do echo $k |
sed -r -e 's=kernel-==' -e 's=[[:space:]].*==' -e 's=.x86_64==' ;done);
do /sbin/mkinitrd.js --allow-missing -f /boot/initrd-${K}.img.js $K ;done
Here;s how I created my modified initrd:
[root@localhost ~]# diff -u /sbin/mkinitrd*
--- /sbin/mkinitrd 2008-03-07 09:25:01.000000000 +0900
+++ /sbin/mkinitrd.js 2008-03-09 21:52:44.000000000 +0900
@@ -1370,6 +1370,12 @@
inst /sbin/nash "$MNTIMAGE" /bin/nash
inst /sbin/modprobe "$MNTIMAGE" /bin/modprobe
inst /sbin/rmmod "$MNTIMAGE" /bin/rmmod
+inst /sbin/busybox "$MNTIMAGE" /bin/busybox
+(
+cd "$MNTIMAGE/bin"
+for f in $(./busybox | sed -r -e '0,/Currently defined functions/d' |
tr -d ,\\\n); do ln -sf busybox $f ;done
+ls -l --color
+)
if [ -e /etc/fstab.sys ]; then
inst /etc/fstab.sys "$MNTIMAGE"
@@ -1793,6 +1799,12 @@
emit "echo Switching to new root and running init."
emit "switchroot"
emit "echo Booting has failed."
+emit "help"
+emit "echo Trying a shell"
+emit "/bin/sh </dev/tty"
+emit "/bin/sh </dev/tty1"
+emit "/bin/busybox --help"
+emit "echo Shell failed or shell done"
emit "sleep -1"
chmod +x $RCFILE
[root@localhost ~]#
Now, if I unpack the initrd then I can chroot into it and it seems fine;
I get a shell can can do stuff.
Before you ask, I have this:
+emit "/bin/sh </dev/tty"
because this didn't work either.
+emit "/bin/sh"
However, when I boot one of these, the echo commands work, but none of
the "/bin/" lines does anything. There are no messages, nothing to
indicate any reason for failure.
Here are the relevant bits of what I have in the initrd:
[root@localhost ~]# gunzip -dc
</boot/initrd-2.6.25-0.87.rc3.git4.fc9.img.js | cpio --list --verbose |
grep bin/ | egrep 'sh|/bus'
lrwxrwxrwx 1 root root 7 Mar 10 17:33 bin/sh -> busybox
-rwxr-xr-x 1 root root 2009352 Feb 20 00:13 bin/busybox
lrwxrwxrwx 1 root root 7 Mar 10 17:33 bin/sha1sum ->
busybox
lrwxrwxrwx 1 root root 7 Mar 10 17:33 bin/ash -> busybox
lrwxrwxrwx 1 root root 7 Mar 10 17:33 bin/msh -> busybox
-rwxr-xr-x 1 root root 100136 Mar 7 09:25 bin/nash
20970 blocks
[root@localhost ~]#
Can anyone think what I might have missed?
I'm off to see whether openvt does better. It fine straw, I know.
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Cheers
John
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