/usr/share/livecd-rootfs/live-build/ubuntu-desktop-next/hooks/99zz-check-uid-gid.chroot is in livecd-rootfs 2.525.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | #!/bin/sh -eu
ERRCNT=""
passwd_hash=$(set -- $(md5sum /etc/passwd) && echo $1)
shadow_hash=$(set -- $(cat /etc/shadow | sed "s/:.*:0:99999:/:0:99999:/g" | md5sum) && echo $1)
group_length=$(cat /etc/group | wc -l)
gshadow_length=$(cat /etc/gshadow | wc -l)
passwd_orig_hash=$(set -- $(md5sum /etc/passwd.orig) && echo $1)
shadow_orig_hash=$(set -- $(cat /etc/shadow.orig | sed "s/:.*:0:99999:/:0:99999:/g" | md5sum) && echo $1)
group_orig_length=$(cat /etc/group.orig | wc -l)
gshadow_orig_length=$(cat /etc/gshadow.orig | wc -l)
if [ "$passwd_hash" != "$passwd_orig_hash" ]; then
echo "/etc/passwd has changed during setup." >&2
echo "The new /etc/passwd md5sum is: $passwd_hash" >&2
diff -Nrup /etc/passwd.orig /etc/passwd >&2 || true
ERRCNT=1
fi
if [ "$shadow_hash" != "$shadow_orig_hash" ]; then
echo "/etc/shadow has changed during setup." >&2
echo "The new /etc/shadow md5sum is: $shadow_hash" >&2
diff -Nrup /etc/shadow.orig /etc/shadow >&2 || true
ERRCNT=1
fi
if [ "$group_length" != "$group_orig_length" ]; then
echo "/etc/group has changed during setup." >&2
diff -Nrup /etc/group.orig /etc/group >&2 || true
ERRCNT=1
fi
if [ "$gshadow_length" != "$gshadow_orig_length" ]; then
echo "/etc/gshadow has changed during setup." >&2
diff -Nrup /etc/gshadow.orig /etc/gshadow >&2 || true
ERRCNT=1
fi
if [ -n "$ERRCNT" ]; then
echo "There were changes to the password database," >&2
echo "please adjust the values in the livecd-rootfs source in the file:" >&2
echo "live-build/ubuntu-core/hooks/00-uid-gid-fix.chroot_early" >&2
echo >&2
echo "Please check also if a maintainer script of the package" >&2
echo "that added these entries perhaps created a home directory and," >&2
echo "if needed, add code for creation of it to the above hook" >&2
exit 1
fi
rm /etc/passwd.orig /etc/shadow.orig /etc/group.orig /etc/gshadow.orig
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