Package: initramfs-tools
Version: 0.92k
Severity: serious
Justification: forbid removal of other packages

Hi,

I upgraded initramfs-tools then I tried to remove an old kernel package
(package from the Debian Kernel Team repo). I got an error:

eyak:/home/vdanjean# dpkg --purge linux-image-2.6.27-rc3-amd64
(Lecture de la base de données... 192887 fichiers et répertoires déjà installés.)
Suppression de linux-image-2.6.27-rc3-amd64 ...
Purge des fichiers de configuration de linux-image-2.6.27-rc3-amd64 ...
Running postrm hook script /usr/sbin/update-grub.
Updating /boot/grub/grub.cfg ...
Found Debian background: debian-blueish-wallpaper-640x480.png
Found linux image: /boot/vmlinuz-2.6.27-rc6-amd64
Found initrd image: /boot/initrd.img-2.6.27-rc6-amd64
Found linux image: /boot/vmlinuz-2.6.27-rc5-amd64
Found initrd image: /boot/initrd.img-2.6.27-rc5-amd64
Found linux image: /boot/vmlinuz-2.6.27-rc4-amd64
Found initrd image: /boot/initrd.img-2.6.27-rc4-amd64
Found linux image: /boot/vmlinuz-2.6.26-1-amd64
Found initrd image: /boot/initrd.img-2.6.26-1-amd64
done
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/update-initramfs
Cannot delete /boot/initrd.img-2.6.27-rc3-amd64, doesn't exist.
run-parts: /etc/kernel/postrm.d/update-initramfs exited with return code 1
Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-2.6.27-rc3-amd64.postrm line 331.
dpkg*: erreur de traitement de linux-image-2.6.27-rc3-amd64 (--purge)*:
le sous-processus post-removal script a retourné une erreur de sortie d'état 2
Des erreurs ont été rencontrées pendant l'exécution*:
linux-image-2.6.27-rc3-amd64
eyak:/home/vdanjean#

This is due to the fact that:
* linux-image-* postrm script removes /boot/initrd.img-... files
Even if it should not, you cannot change already installed postrm files
of all (locally or official) kernel debian package. This is why I report
this bug against initramfs-tool and not linux-2.6
* linux-image-* postrm script calls /etc/kernel/postrm.d/update-initramfs
(with the help of run-parts)
* /etc/kernel/postrm.d/update-initramfs runs "update-initramfs -d -k $KVER"
that returns an error (even if "set -e" is not there, this is the last
command of this script):
eyak:/home/vdanjean# update-initramfs -d -k 2.6.27-rc3-amd64 ; echo $?
Cannot delete /boot/initrd.img-2.6.27-rc3-amd64, doesn't exist.
1
eyak:/home/vdanjean#

So, somthing must be done. /etc/kernel/postrm.d/update-initramfs must not
return an error when /boot/initrd.img-* is not present (even if it is not
removed in the linux-image-* postrm: the sysadmin can have (re)moved it)

Regards,
Vincent

PS: as a workaround, I added "true" in /etc/kernel/postrm.d/update-initramfs
on the last line. But it not really a fix since I now ignore any update-initramfs
error.

-- Package-specific info:
-- /proc/cmdline
BOOT_IMAGE=/vmlinuz-2.6.26-1-amd64 root=/dev/mapper/eyak-root ro

-- /proc/filesystems
ext3
udf
iso9660

-- lsmod
Module Size Used by
microcode 15160 0
iwl4965 107208 0
usbhid 45792 0
hid 41792 1 usbhid
ff_memless 9224 1 usbhid
usblp 16896 0
aes_x86_64 12416 2
aes_generic 32552 1 aes_x86_64
xts 7680 1
gf128mul 12800 1 xts
tun 14084 1
nls_utf8 6272 0
isofs 35880 0
zlib_inflate 18944 1 isofs
udf 75944 0
nls_base 12932 3 nls_utf8,isofs,udf
crc_itu_t 6528 1 udf
i915 35072 1
drm 91488 2 i915
rfcomm 38176 0
l2cap 23936 5 rfcomm
kvm_intel 39776 0
kvm 127464 1 kvm_intel
ppdev 11656 0
parport_pc 31016 0
lp 14724 0
parport 41776 3 ppdev,parport_pc,lp
ipv6 288328 32
acpi_cpufreq 11792 1
cpufreq_conservative 11784 0
cpufreq_stats 9120 0
cpufreq_ondemand 11792 1
cpufreq_userspace 8452 0
cpufreq_powersave 6400 0
freq_table 9344 3 acpi_cpufreq,cpufreq_stats,cpufreq_ondemand
dm_crypt 17032 1
coretemp 11008 0
loop 19468 0
joydev 14848 0
arc4 6272 2
ecb 7296 2
crypto_blkcipher 21636 4 xts,dm_crypt,ecb
pcmcia 38680 0
iwlcore 31360 1 iwl4965
firmware_class 12544 3 microcode,iwl4965,pcmcia
rfkill 11168 2 iwlcore
snd_hda_intel 434776 1
mac80211 162864 2 iwl4965,iwlcore
led_class 8968 1 iwlcore
snd_pcm_oss 41760 0
snd_mixer_oss 18816 1 snd_pcm_oss
snd_pcm 81800 2 snd_hda_intel,snd_pcm_oss
snd_timer 25744 1 snd_pcm
yenta_socket 27916 1
rsrc_nonstatic 14080 1 yenta_socket
psmouse 42268 0
snd 63688 7 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,sn d_timer
cfg80211 30224 2 iwl4965,mac80211
iTCO_wdt 15696 0
i2c_i801 13596 0
soundcore 12064 1 snd
pcmcia_core 41508 3 pcmcia,yenta_socket,rsrc_nonstatic
pcspkr 7040 0
serio_raw 9860 0
i2c_core 27936 1 i2c_i801
hci_usb 18460 2
snd_page_alloc 13072 2 snd_hda_intel,snd_pcm
bay 9216 0
bluetooth 57124 7 rfcomm,l2cap,hci_usb
video 24084 0
output 7808 1 video
wmi 11712 0
ac 9352 0
button 11680 0
battery 16904 0
intel_agp 31728 1
evdev 14208 11
dcdbas 11952 0
ext3 124688 7
jbd 51240 1 ext3
mbcache 12804 1 ext3
dm_mirror 20608 0
dm_log 13956 1 dm_mirror
dm_snapshot 19400 0
dm_mod 58864 19 dm_crypt,dm_mirror,dm_log,dm_snapshot
sd_mod 29376 4
ide_cd_mod 36360 0
cdrom 37928 1 ide_cd_mod
ide_pci_generic 9220 0 [permanent]
piix 12424 0 [permanent]
ide_core 128284 3 ide_cd_mod,ide_pci_generic,piix
ata_piix 22660 3
ohci1394 32564 0
ieee1394 93816 1 ohci1394
ata_generic 10116 0
libata 165472 2 ata_piix,ata_generic
scsi_mod 160760 2 sd_mod,libata
tg3 97156 0
ehci_hcd 36108 0
uhci_hcd 25760 0
dock 14112 2 bay,libata
thermal 22688 0
processor 42304 4 acpi_cpufreq,thermal
fan 9352 0
thermal_sys 17728 4 video,thermal,processor,fan

-- /etc/kernel-img.conf
# Kernel image management overrides
# See kernel-img.conf(5) for details
do_symlinks = yes
relative_links = yes
do_bootloader = no
do_bootfloppy = no
do_initrd = yes
link_in_boot = no
postinst_hook = update-grub
postrm_hook = update-grub

-- /etc/initramfs-tools/initramfs.conf
MODULES=most
BUSYBOX=y
KEYMAP=n
BOOT=local
DEVICE=eth0
NFSROOT=auto

-- /etc/crypttab
# <target name> <source device> <key file> <options>
decrypt-private /dev/mapper/eyak-private none luks,checkargs=ext3,noauto


-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages initramfs-tools depends on:
ii cpio 2.9-13 GNU cpio -- a program to manage ar
ii findutils 4.4.0-2 utilities for finding files--find,
ii klibc-utils 1.5.12-2 small utilities built with klibc f
ii module-init-tools 3.4-1 tools for managing Linux kernel mo
ii udev 0.125-6 /dev/ and hotplug management daemo

Versions of packages initramfs-tools recommends:
ii busybox 1:1.10.2-2 Tiny utilities for small and embed

initramfs-tools suggests no packages.

-- no debconf information



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Hi,

We can possibly distinguish between /etc/kernel/postinst.d getting called
from kernel-package context, and upstream debpkg context. debpkg calls
with the following:

test -d /etc/kernel/postinst.d && run-parts --arg="$version" /etc/kernel/postinst.d

kernel-package's uses:

system ("run-parts --verbose --exit-on-error --arg=$version " .
"--arg=$realimageloc$kimage-$version " .
"/etc/kernel/postinst.d")

Note that kernel-package's passes two arguments. In theory, we could have
an /etc/kernel/postinst.d/update-initramfs (or
/etc/kernel/postinst.d/initramfs-tools, if we want to match the package
name) that does:

# passing the kernel version is required
[ -z "$1" ] && exit 0
# kernel-package passes an extra arg; hack to not run under kernel-package
[ -z "$2" ] || exit 0

# we're good - create initramfs. update runs do_bootloader
update-initramfs -t -u -k "$1"


Thoughts?



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