usertool.pl: match recent key length updates
[girocco.git] / chrootsetup_dragonfly.sh
blob152fbe8f90f9aec8e894082f63e4ced116e6c62b
1 # chrootsetup_dragonfly.sh
3 # This file SHOULD NOT be executable! It is sourced by jailsetup.sh and
4 # SHOULD NOT be executed directly!
6 # On entry the current directory will be set to the top of the chroot
7 # This script must perform platform-specific chroot setup which includes
8 # creating any dev device entries, setting up proc (if needed), setting
9 # up lib64 (if needed) as well as installing a basic set of whatever libraries
10 # are needed for a chroot to function on this platform.
12 # This script must also define a pull_in_bin function that may be called to
13 # install an executable together with any libraries it depends on into the
14 # chroot.
16 # Finally this script must install a suitable nc.openbsd compatible version of
17 # netcat into the chroot jail that's available as nc.openbsd and which supports
18 # connections to unix sockets.
20 # We are designed to set up the chroot based on binaries from
21 # x86_64 DragonFly BSD 4.4; some things may need slight modifications if
22 # being run on a different distribution.
24 # We require update_pwd_db to be set to work properly on DragonFly BSD
25 [ -n "$cfg_update_pwd_db" ] && [ "$cfg_update_pwd_db" != "0" ] || {
26 echo 'error: Config.pm must set $update_pwd_db to 1 to use a DragonFly BSD jail' >&2
27 exit 1
30 chroot_dir="$(pwd)"
32 mkdir -p dev proc
33 chown 0:0 dev proc
35 # Extra directories
36 mkdir -p libexec var/tmp
38 # Install the devfsctl chroot ruleset
39 rm -f etc/devfs.conf
40 cat "$curdir/fstab/devfsctl_chroot_ruleset" >etc/devfs.conf
41 chown 0:0 etc/devfs.conf
42 chmod 0444 etc/devfs.conf
44 # Make sure there's an auth.conf file, empty is fine
45 if ! [ -e etc/auth.conf ]; then
46 >etc/auth.conf
47 chown 0:0 etc/auth.conf
48 chmod 0444 etc/auth.conf
51 cp_p() {
52 # use cpio to avoid setting flags
53 # must NOT use passthrough mode as that will set flags on newer systems
54 [ "$2" = "${2%/}/" ] || ! [ -d "$chroot_dir/$2" ] || set -- "$1" "$2/"
55 (cd "$(dirname "$1")" && echo "$(basename "$1")" |
56 cpio -o -L 2>/dev/null | { cd "$chroot_dir/${2%/*}" && cpio -i -m -u; } 2>/dev/null)
57 test $? -eq 0
58 if [ "${2%/*}" != "${2%/}" ]; then
59 mv -f "$chroot_dir/${2%/*}/$(basename "$1")" \
60 "$chroot_dir/${2%/*}/$(basename "$2")"
64 # Bring in basic libraries:
65 rm -f lib/* libexec/*
66 # ld-elf.so.2:
67 cp_p /libexec/ld-elf.so.2 libexec/
69 pull_in_lib() {
70 [ -f "$1" ] || return
71 dst="${2%/}/$(basename "$1")"
72 if [ ! -e "$dst" ] || [ "$1" -nt "$dst" ]; then
73 cp_p "$1" "$dst"
74 for llib in $(ldd "$1" | grep '=>' | LC_ALL=C awk '{print $3}'); do
75 (pull_in_lib "$llib" lib)
76 test $? -eq 0
77 done
82 # pull_in_bin takes two arguments:
83 # 1: the full path to a binary to pull in (together with any library dependencies)
84 # 2: the destination directory relative to the current directory to copy it to which
85 # MUST already exist with optional alternate name if the name in the chroot should be different
86 # 3: optional name of binary that if already in $2 and the same as $1 hard link to instead
87 # for example, "pull_in_bin /bin/sh bin" will install the shell into the chroot bin directory
88 # for example, "pull_in_bin /bin/bash bin/sh" will install bash as the chroot bin/sh
89 # IMPORTANT: argument 1 must be a machine binary, NOT a shell script or other interpreted text
90 # IMPORTANT: text scripts can simply be copied in or installed as they don't have libraries to copy
91 # NOTE: it's expected that calling this function on a running chroot may cause temporary disruption
92 # In order to avoid a busy error while replacing binaries we first copy the binary to the
93 # var/tmp directory and then force move it into place after the libs have been brought in.
94 pull_in_bin() {
95 bin="$1"; bdst="$2"
96 if [ -d "${bdst%/}" ]; then
97 bnam="$(basename "$bin")"
98 bdst="${bdst%/}"
99 else
100 bnam="$(basename "$bdst")"
101 bdst="${bdst%/*}"
103 if [ -n "$3" ] && [ "$3" != "$bnam" ] &&
104 [ -r "$bdst/$3" ] && [ -x "$bdst/$3" ] && cmp -s "$bin" "$bdst/$3"; then
105 ln -f "$bdst/$3" "$bdst/$bnam"
106 return 0
108 cp_p "$bin" var/tmp/
109 # ...and all the dependencies.
110 for lib in $(ldd "$bin" | grep '=>' | LC_ALL=C awk '{print $3}'); do
111 pull_in_lib "$lib" lib
112 done
113 mv -f "var/tmp/$(basename "$bin")" "$bdst/$bnam"
116 # A catch all that needs to be called after everything's been pulled in
117 chroot_update_permissions() {
118 # Be paranoid
119 [ -n "$chroot_dir" ] && [ "$chroot_dir" != "/" ] || { echo bad '$chroot_dir' >&2; exit 2; }
120 cd "$chroot_dir" || { echo bad '$chroot_dir' >&2; exit 2; }
121 rm -rf var/tmp
122 chown -R 0:0 bin lib sbin var libexec
123 # bootstrap the master.passwd database
124 rm -f etc/master.passwd etc/pwd.db etc/spwd.db
125 LC_ALL=C awk -F ':' '{ print $1 ":" $2 ":" $3 ":" $4 "::0:0:" $5 ":" $6 ":" $7 }' <etc/passwd >etc/master.passwd
126 PW_SCAN_BIG_IDS=1 pwd_mkdb -d etc etc/master.passwd 2>/dev/null
127 chown $cfg_mirror_user:$cfg_owning_group etc/master.passwd etc/pwd.db etc/spwd.db
128 chmod 0664 etc/master.passwd etc/pwd.db etc/spwd.db
131 # the nc.openbsd compatible utility is available as $var_nc_openbsd_bin
132 pull_in_bin "$var_nc_openbsd_bin" bin/nc.openbsd