I bet there is simple fix. Here is a fairly complete description of
my current situation:
Okay, I am trying to setup, on a RH6.2 system these pieces:
linux-2.2.18.tar.bz2 with patch-int-2.2.18.3.gz and freeswan-1.8.tar.gz
Which seems to work. In particular, "modprobe twofish" works.
[root@xxxxxxxxx /sbin]# ls /proc/crypto/cipher/ -l
total 0
-r--r--r-- 1 root root 0 Dec 17 20:24 twofish
-r--r--r-- 1 root root 0 Dec 17 20:24 twofish-cbc
On top of the programs from the util-linux-2.10p-1 rpm, I have created
a second rpm ( called util-linux-2.10r-13_crypto ) with just the
mount, umount, and losetup commands. I compiled these 3 commands from
util-linux-2.10r.tar.bz2 with the util-linux-2.10o.int.patch from
patch-int-2.2.18.3.gz. So now I get
[root@xxxxxxxxx /sbin]# ./losetup
usage:
./losetup loop_device # give info
./losetup -d loop_device # delete
./losetup [ -e encryption ] [ -o offset ] loop_device file # setup
where encryption is one of:
no
none
xor
DES
twofish
blowfish
cast128
serpent
mars
rc6
DES_EDE3
dfc
idea
Which is odd, since I expected aes to be listed, but oh well. The "no" and "xor"
types seem to work, but I cannot use the ciphers. The error message is:
[root@xxxxxxxxx /sbin]# losetup -e twofish /dev/loop0 ~/testing
Password :
ioctl: LOOP_SET_STATUS: Invalid argument
So this is my question: How do I fix this error? Did I miss a step?
Mix the wrong set of patches? Forget to sacrfice a young enough goat?
I have strace output, but it is not very illuminating to me:
write(6, "Password :", 10) = 10
read(6, "frogs\n", 4096) = 6
write(6, "\n", 1) = 1
ioctl(6, SNDCTL_TMR_CONTINUE, {B38400 opost isig icanon echo ...}) = 0
close(6) = 0
munmap(0x4012c000, 4096) = 0
ioctl(5, LOOP_SET_FD, 0x4) = 0
ioctl(5, LOOP_SET_STATUS, 0xbffff9a0) = -1 ENOSYS (Function not implemented)
ioctl(5, LOOP_SET_STATUS, 0xbffff9a0) = -1 ENOSYS (Function not implemented)
ioctl(5, LOOP_SET_STATUS, 0xbffff9a0) = -1 EINVAL (Invalid argument)
ioctl(5, LOOP_CLR_FD, 0) = 0
open("/usr/share/locale/en_US/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, "ioctl: LOOP_SET_STATUS: Invalid "..., 41) = 41
_exit(1) = ?
The relevant loopback and CRYPTO sections of the kernel .config file are
#
# Additional Block Devices
#
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_LOOP_USE_REL_BLOCK=y
CONFIG_BLK_DEV_LOOP_GEN_SEL="1"
CONFIG_BLK_DEV_LOOP_GEN=y
# CONFIG_BLK_DEV_LOOP_CAST is not set
# CONFIG_BLK_DEV_LOOP_FISH2 is not set
#
# Crypto options
#
CONFIG_CRYPTO=y
CONFIG_CIPHERS=y
CONFIG_CIPHER_AES=m
CONFIG_CIPHER_RIJNDAEL=y
#
# AES Finalist Ciphers (128 bit blocksize)
#
CONFIG_CIPHER_TWOFISH=m
CONFIG_CIPHER_MARS=m
CONFIG_CIPHER_RC6=m
CONFIG_CIPHER_SERPENT=m
#
# Other Ciphers submitted as AES Candidates:
#
CONFIG_CIPHER_DFC=m
#
# Other ciphers (64 bit blocksize)
#
CONFIG_CIPHER_BLOWFISH=m
CONFIG_CIPHER_IDEA=m
CONFIG_CIPHER_RC5=m
# CONFIG_CIPHER_DES_EDE3 is not set
# CONFIG_CIPHER_DES is not set
# CONFIG_DIGEST is not set
Linux-crypto: cryptography in and on the Linux system
Archive: http://mail.nl.linux.org/linux-crypto/
