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This weekend I have been messing around a little with the boot process, and found myself inspecting the default initrd shipped with Fedora.
Where are all of the commands listed in the init script kept? Some that I do not recognize which are not found on the nash man page are setuproot and loadpolicy.
(See http://article.gmane.org/gmane.linux...general/323223 for example contents).
Thanks for your help, as these commands seem to be popping up out of thin air.
1. If you want to know where "most" startup scripts, goto /etc/init.d
those are all script files
2. To find what modules are loaded before the "main" Kernel gets activated, goto /etc/rc.d | cat rc.sysinit | more
3. If you are rebuilding a kernel, copy a known good .config file and place it into the new kernel directory, make install will autorecreate the initrd and throw it into the bootloader. It will make a backup copy in the /boot directory under <newkernel>.conf or something other.
Fedora wants to be different from the rest of the world. To hunt down those 2 scripts, 'find / -name setuproot' or loadpolicy
#!/bin/nash
mount -t proc /proc /proc
setquiet
# nash: cause any late echos in this start script not to be displayed
echo Mounting proc filesystem
echo Mounting sysfs filesystem
mount -t sysfs /sys /sys
echo Creating /dev
mount -o mode=0755 -t tmpfs /dev /dev
mkdir /dev/pts
mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
mkdir /dev/shm
mkdir /dev/mapper
echo Creating initial device nodes
mknod /dev/null c 1 3
mknod /dev/zero c 1 5
mknod /dev/systty c 4 0
mknod /dev/tty c 5 0
mknod /dev/console c 5 1
mknod /dev/ptmx c 5 2
mknod /dev/tty0 c 4 0
mknod /dev/tty1 c 4 1
mknod /dev/tty2 c 4 2
mknod /dev/tty3 c 4 3
mknod /dev/tty4 c 4 4
mknod /dev/tty5 c 4 5
mknod /dev/tty6 c 4 6
mknod /dev/tty7 c 4 7
mknod /dev/tty8 c 4 8
mknod /dev/tty9 c 4 9
mknod /dev/tty10 c 4 10
mknod /dev/tty11 c 4 11
mknod /dev/tty12 c 4 12
mknod /dev/ttyS0 c 4 64
mknod /dev/ttyS1 c 4 65
mknod /dev/ttyS2 c 4 66
mknod /dev/ttyS3 c 4 67
echo Setting up hotplug.
hotplug
# /etc/sysconfig/network-scripts/net.hotplug
# /lib/modules/2.6.25-14.fc9.i686/kernel/drivers/pci/hotplug/
#
echo Creating block device nodes.
mkblkdevs
# ?
echo "Loading ehci-hcd module"
modprobe -q ehci-hcd
echo "Loading ohci-hcd module"
modprobe -q ohci-hcd
echo "Loading uhci-hcd module"
modprobe -q uhci-hcd
mount -t usbfs /proc/bus/usb /proc/bus/usb
echo "Loading pata_via module"
modprobe -q pata_via
echo Waiting for driver initialization.
stabilized --hash --interval 250 /proc/scsi/scsi
# ?
mkblkdevs
# ?
resume /dev/sda2
# ?
echo Creating root device.
mkrootdev -t ext3 -o defaults,ro /dev/sda1
echo Mounting root filesystem.
mount /sysroot
echo Setting up other filesystems.
setuproot
# ?
loadpolicy
# ?
echo Switching to new root and running init.
switchroot
# nash command
echo Booting has failed.
sleep -1
Some of these commands are not found anywhere on the file system. I have also tried the following and did not produce any results.
find /etc -print | xargs -I '{}' grep -li [command] '{}'
Also, these are not kernel modules. This is the initialization script that is used during boot by init.
if you get a chance, check your kernel source code by doing make xconfig. Do a search for selinux. Is it disabled? Recompiling after enabling should do the job.Quote:
Originally Posted by stonee
From what I could find, they are undocumented nash commands.
I found a suggestion to download the mkinitrd source (.src.rpm )
look in nash.c to find out what they do?
I am not a programer, so it was a little difficult for me, but maybe you will understand it.