usertool.pl: match recent key length updates
[girocco.git] / chrootsetup_freebsd.sh
blob4d9c7cd13e86221625ea97afa06165e6fc8baa7c
1 # chrootsetup_freebsd.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 # amd64 FreeBSD 8; 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 FreeBSD
25 [ -n "$cfg_update_pwd_db" ] && [ "$cfg_update_pwd_db" != "0" ] || {
26 echo 'error: Config.pm must set $update_pwd_db to 1 to use a FreeBSD jail' >&2
27 exit 1
30 chroot_dir="$(pwd)"
32 mkdir -p dev proc
33 chown 0:0 dev proc
35 # Extra directories
36 mkdir -p libexec var/tmp
38 # Make sure there's an auth.conf file, empty is fine
39 if ! [ -e etc/auth.conf ]; then
40 >etc/auth.conf
41 chown 0:0 etc/auth.conf
42 chmod 0444 etc/auth.conf
45 cp_p() {
46 # use cpio to avoid setting flags
47 # must NOT use passthrough mode as that will set flags on newer systems
48 [ "$2" = "${2%/}/" ] || ! [ -d "$chroot_dir/$2" ] || set -- "$1" "$2/"
49 (cd "$(dirname "$1")" && echo "$(basename "$1")" |
50 cpio -o -L 2>/dev/null | { cd "$chroot_dir/${2%/*}" && cpio -i -m -u; } 2>/dev/null)
51 test $? -eq 0
52 if [ "${2%/*}" != "${2%/}" ]; then
53 mv -f "$chroot_dir/${2%/*}/$(basename "$1")" \
54 "$chroot_dir/${2%/*}/$(basename "$2")"
58 # Bring in basic libraries:
59 rm -f lib/* libexec/*
60 # ld-elf.so.1:
61 cp_p /libexec/ld-elf.so.1 libexec/
63 pull_in_lib() {
64 [ -f "$1" ] || return
65 dst="${2%/}/$(basename "$1")"
66 if [ ! -e "$dst" ] || [ "$1" -nt "$dst" ]; then
67 cp_p "$1" "$dst"
68 for llib in $(ldd "$1" | grep '=>' | LC_ALL=C awk '{print $3}'); do
69 (pull_in_lib "$llib" lib)
70 test $? -eq 0
71 done
76 # pull_in_bin takes two arguments:
77 # 1: the full path to a binary to pull in (together with any library dependencies)
78 # 2: the destination directory relative to the current directory to copy it to which
79 # MUST already exist with optional alternate name if the name in the chroot should be different
80 # 3: optional name of binary that if already in $2 and the same as $1 hard link to instead
81 # for example, "pull_in_bin /bin/sh bin" will install the shell into the chroot bin directory
82 # for example, "pull_in_bin /bin/bash bin/sh" will install bash as the chroot bin/sh
83 # IMPORTANT: argument 1 must be a machine binary, NOT a shell script or other interpreted text
84 # IMPORTANT: text scripts can simply be copied in or installed as they don't have libraries to copy
85 # NOTE: it's expected that calling this function on a running chroot may cause temporary disruption
86 # In order to avoid a busy error while replacing binaries we first copy the binary to the
87 # var/tmp directory and then force move it into place after the libs have been brought in.
88 pull_in_bin() {
89 bin="$1"; bdst="$2"
90 if [ -d "${bdst%/}" ]; then
91 bnam="$(basename "$bin")"
92 bdst="${bdst%/}"
93 else
94 bnam="$(basename "$bdst")"
95 bdst="${bdst%/*}"
97 if [ -n "$3" ] && [ "$3" != "$bnam" ] &&
98 [ -r "$bdst/$3" ] && [ -x "$bdst/$3" ] && cmp -s "$bin" "$bdst/$3"; then
99 ln -f "$bdst/$3" "$bdst/$bnam"
100 return 0
102 cp_p "$bin" var/tmp/
103 # ...and all the dependencies.
104 for lib in $(ldd "$bin" | grep '=>' | LC_ALL=C awk '{print $3}'); do
105 pull_in_lib "$lib" lib
106 done
107 mv -f "var/tmp/$(basename "$bin")" "$bdst/$bnam"
110 # A catch all that needs to be called after everything's been pulled in
111 chroot_update_permissions() {
112 # Be paranoid
113 [ -n "$chroot_dir" ] && [ "$chroot_dir" != "/" ] || { echo bad '$chroot_dir' >&2; exit 2; }
114 cd "$chroot_dir" || { echo bad '$chroot_dir' >&2; exit 2; }
115 rm -rf var/tmp
116 chown -R 0:0 bin lib sbin var libexec
117 # bootstrap the master.passwd database
118 rm -f etc/master.passwd etc/pwd.db etc/spwd.db
119 LC_ALL=C awk -F ':' '{ print $1 ":" $2 ":" $3 ":" $4 "::0:0:" $5 ":" $6 ":" $7 }' <etc/passwd >etc/master.passwd
120 PW_SCAN_BIG_IDS=1 pwd_mkdb -d etc etc/master.passwd 2>/dev/null
121 chown $cfg_mirror_user:$cfg_owning_group etc/master.passwd etc/pwd.db etc/spwd.db
122 chmod 0664 etc/master.passwd etc/pwd.db etc/spwd.db
125 # the nc.openbsd compatible utility is available as $var_nc_openbsd_bin
126 pull_in_bin "$var_nc_openbsd_bin" bin/nc.openbsd