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| 1 #!/bin/bash -e | |
| 2 | |
| 3 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 4 # Use of this source code is governed by a BSD-style license that can be | |
| 5 # found in the LICENSE file. | |
| 6 | |
| 7 # This script installs Debian-derived distributions in a chroot environment. | |
| 8 # It can for example be used to have an accurate 32bit build and test | |
| 9 # environment when otherwise working on a 64bit machine. | |
| 10 # N. B. it is unlikely that this script will ever work on anything other than a | |
| 11 # Debian-derived system. | |
| 12 | |
| 13 # Older Debian based systems had both "admin" and "adm" groups, with "admin" | |
| 14 # apparently being used in more places. Newer distributions have standardized | |
| 15 # on just the "adm" group. Check /etc/group for the preferred name of the | |
| 16 # administrator group. | |
| 17 admin=$(grep '^admin:' /etc/group >&/dev/null && echo admin || echo adm) | |
| 18 | |
| 19 usage() { | |
| 20 echo "usage: ${0##*/} [-m mirror] [-g group,...] [-s] [-c]" | |
| 21 echo "-b dir additional directories that should be bind mounted," | |
| 22 echo ' or "NONE".' | |
| 23 echo " Default: if local filesystems present, ask user for help" | |
| 24 echo "-g group,... groups that can use the chroot unauthenticated" | |
| 25 echo " Default: '${admin}' and current user's group ('$(id -gn)')" | |
| 26 echo "-l List all installed chroot environments" | |
| 27 echo "-m mirror an alternate repository mirror for package downloads" | |
| 28 echo "-s configure default deb-srcs" | |
| 29 echo "-c always copy 64bit helper binaries to 32bit chroot" | |
| 30 echo "-h this help message" | |
| 31 } | |
| 32 | |
| 33 process_opts() { | |
| 34 local OPTNAME OPTIND OPTERR OPTARG | |
| 35 while getopts ":b:g:lm:sch" OPTNAME; do | |
| 36 case "$OPTNAME" in | |
| 37 b) | |
| 38 if [ "${OPTARG}" = "NONE" -a -z "${bind_mounts}" ]; then | |
| 39 bind_mounts="${OPTARG}" | |
| 40 else | |
| 41 if [ "${bind_mounts}" = "NONE" -o "${OPTARG}" = "${OPTARG#/}" -o \ | |
| 42 ! -d "${OPTARG}" ]; then | |
| 43 echo "Invalid -b option(s)" | |
| 44 usage | |
| 45 exit 1 | |
| 46 fi | |
| 47 bind_mounts="${bind_mounts} | |
| 48 ${OPTARG} ${OPTARG} none rw,bind 0 0" | |
| 49 fi | |
| 50 ;; | |
| 51 g) | |
| 52 [ -n "${OPTARG}" ] && | |
| 53 chroot_groups="${chroot_groups}${chroot_groups:+,}${OPTARG}" | |
| 54 ;; | |
| 55 l) | |
| 56 list_all_chroots | |
| 57 exit | |
| 58 ;; | |
| 59 m) | |
| 60 if [ -n "${mirror}" ]; then | |
| 61 echo "You can only specify exactly one mirror location" | |
| 62 usage | |
| 63 exit 1 | |
| 64 fi | |
| 65 mirror="$OPTARG" | |
| 66 ;; | |
| 67 s) | |
| 68 add_srcs="y" | |
| 69 ;; | |
| 70 c) | |
| 71 copy_64="y" | |
| 72 ;; | |
| 73 h) | |
| 74 usage | |
| 75 exit 0 | |
| 76 ;; | |
| 77 \:) | |
| 78 echo "'-$OPTARG' needs an argument." | |
| 79 usage | |
| 80 exit 1 | |
| 81 ;; | |
| 82 *) | |
| 83 echo "invalid command-line option: $OPTARG" | |
| 84 usage | |
| 85 exit 1 | |
| 86 ;; | |
| 87 esac | |
| 88 done | |
| 89 | |
| 90 if [ $# -ge ${OPTIND} ]; then | |
| 91 eval echo "Unexpected command line argument: \${${OPTIND}}" | |
| 92 usage | |
| 93 exit 1 | |
| 94 fi | |
| 95 } | |
| 96 | |
| 97 list_all_chroots() { | |
| 98 for i in /var/lib/chroot/*; do | |
| 99 i="${i##*/}" | |
| 100 [ "${i}" = "*" ] && continue | |
| 101 [ -x "/usr/local/bin/${i%bit}" ] || continue | |
| 102 grep -qs "^\[${i%bit}\]\$" /etc/schroot/schroot.conf || continue | |
| 103 [ -r "/etc/schroot/script-${i}" -a \ | |
| 104 -r "/etc/schroot/mount-${i}" ] || continue | |
| 105 echo "${i%bit}" | |
| 106 done | |
| 107 } | |
| 108 | |
| 109 getkey() { | |
| 110 ( | |
| 111 trap 'stty echo -iuclc icanon 2>/dev/null' EXIT INT TERM QUIT HUP | |
| 112 stty -echo iuclc -icanon 2>/dev/null | |
| 113 dd count=1 bs=1 2>/dev/null | |
| 114 ) | |
| 115 } | |
| 116 | |
| 117 chr() { | |
| 118 printf "\\$(printf '%03o' "$1")" | |
| 119 } | |
| 120 | |
| 121 ord() { | |
| 122 printf '%d' $(printf '%c' "$1" | od -tu1 -An) | |
| 123 } | |
| 124 | |
| 125 is_network_drive() { | |
| 126 stat -c %T -f "$1/" 2>/dev/null | | |
| 127 egrep -qs '^nfs|cifs|smbfs' | |
| 128 } | |
| 129 | |
| 130 # Check that we are running as a regular user | |
| 131 [ "$(id -nu)" = root ] && { | |
| 132 echo "Run this script as a regular user and provide your \"sudo\"" \ | |
| 133 "password if requested" >&2 | |
| 134 exit 1 | |
| 135 } | |
| 136 | |
| 137 process_opts "$@" | |
| 138 | |
| 139 echo "This script will help you through the process of installing a" | |
| 140 echo "Debian or Ubuntu distribution in a chroot environment. You will" | |
| 141 echo "have to provide your \"sudo\" password when requested." | |
| 142 echo | |
| 143 | |
| 144 # Error handler | |
| 145 trap 'exit 1' INT TERM QUIT HUP | |
| 146 trap 'sudo apt-get clean; tput bel; echo; echo Failed' EXIT | |
| 147 | |
| 148 # Install any missing applications that this script relies on. If these packages | |
| 149 # are already installed, don't force another "apt-get install". That would | |
| 150 # prevent them from being auto-removed, if they ever become eligible for that. | |
| 151 # And as this script only needs the packages once, there is no good reason to | |
| 152 # introduce a hard dependency on things such as dchroot and debootstrap. | |
| 153 dep= | |
| 154 for i in dchroot debootstrap libwww-perl; do | |
| 155 [ -d /usr/share/doc/"$i" ] || dep="$dep $i" | |
| 156 done | |
| 157 [ -n "$dep" ] && sudo apt-get -y install $dep | |
| 158 sudo apt-get -y install schroot | |
| 159 | |
| 160 # Create directory for chroot | |
| 161 sudo mkdir -p /var/lib/chroot | |
| 162 | |
| 163 # Find chroot environments that can be installed with debootstrap | |
| 164 targets="$(cd /usr/share/debootstrap/scripts | |
| 165 ls | grep '^[a-z]*$')" | |
| 166 | |
| 167 # Ask user to pick one of the available targets | |
| 168 echo "The following targets are available to be installed in a chroot:" | |
| 169 j=1; for i in $targets; do | |
| 170 printf '%4d: %s\n' "$j" "$i" | |
| 171 j=$(($j+1)) | |
| 172 done | |
| 173 while :; do | |
| 174 printf "Which target would you like to install: " | |
| 175 read n | |
| 176 [ "$n" -gt 0 -a "$n" -lt "$j" ] >&/dev/null && break | |
| 177 done | |
| 178 j=1; for i in $targets; do | |
| 179 [ "$j" -eq "$n" ] && { distname="$i"; break; } | |
| 180 j=$(($j+1)) | |
| 181 done | |
| 182 echo | |
| 183 | |
| 184 # On x86-64, ask whether the user wants to install x86-32 or x86-64 | |
| 185 archflag= | |
| 186 arch= | |
| 187 if [ "$(uname -m)" = x86_64 ]; then | |
| 188 while :; do | |
| 189 echo "You are running a 64bit kernel. This allows you to install either a" | |
| 190 printf "32bit or a 64bit chroot environment. %s" \ | |
| 191 "Which one do you want (32, 64) " | |
| 192 read arch | |
| 193 [ "${arch}" == 32 -o "${arch}" == 64 ] && break | |
| 194 done | |
| 195 [ "${arch}" == 32 ] && archflag="--arch i386" || archflag="--arch amd64" | |
| 196 arch="${arch}bit" | |
| 197 echo | |
| 198 fi | |
| 199 target="${distname}${arch}" | |
| 200 | |
| 201 # Don't accidentally overwrite an existing installation | |
| 202 [ -d /var/lib/chroot/"${target}" ] && { | |
| 203 while :; do | |
| 204 echo "This chroot already exists on your machine." | |
| 205 if schroot -l --all-sessions 2>&1 | | |
| 206 sed 's/^session://' | | |
| 207 grep -qs "^${target%bit}-"; then | |
| 208 echo "And it appears to be in active use. Terminate all programs that" | |
| 209 echo "are currently using the chroot environment and then re-run this" | |
| 210 echo "script." | |
| 211 echo "If you still get an error message, you might have stale mounts" | |
| 212 echo "that you forgot to delete. You can always clean up mounts by" | |
| 213 echo "executing \"${target%bit} -c\"." | |
| 214 exit 1 | |
| 215 fi | |
| 216 echo "I can abort installation, I can overwrite the existing chroot," | |
| 217 echo "or I can delete the old one and then exit. What would you like to" | |
| 218 printf "do (a/o/d)? " | |
| 219 read choice | |
| 220 case "${choice}" in | |
| 221 a|A) exit 1;; | |
| 222 o|O) sudo rm -rf "/var/lib/chroot/${target}"; break;; | |
| 223 d|D) sudo rm -rf "/var/lib/chroot/${target}" \ | |
| 224 "/usr/local/bin/${target%bit}" \ | |
| 225 "/etc/schroot/mount-${target}" \ | |
| 226 "/etc/schroot/script-${target}" \ | |
| 227 "/etc/schroot/${target}" | |
| 228 sudo sed -ni '/^[[]'"${target%bit}"']$/,${ | |
| 229 :1;n;/^[[]/b2;b1;:2;p;n;b2};p' \ | |
| 230 "/etc/schroot/schroot.conf" | |
| 231 trap '' INT TERM QUIT HUP | |
| 232 trap '' EXIT | |
| 233 echo "Deleted!" | |
| 234 exit 0;; | |
| 235 esac | |
| 236 done | |
| 237 echo | |
| 238 } | |
| 239 sudo mkdir -p /var/lib/chroot/"${target}" | |
| 240 | |
| 241 # Offer to include additional standard repositories for Ubuntu-based chroots. | |
| 242 alt_repos= | |
| 243 grep -qs ubuntu.com /usr/share/debootstrap/scripts/"${distname}" && { | |
| 244 while :; do | |
| 245 echo "Would you like to add ${distname}-updates and ${distname}-security " | |
| 246 printf "to the chroot's sources.list (y/n)? " | |
| 247 read alt_repos | |
| 248 case "${alt_repos}" in | |
| 249 y|Y) | |
| 250 alt_repos="y" | |
| 251 break | |
| 252 ;; | |
| 253 n|N) | |
| 254 break | |
| 255 ;; | |
| 256 esac | |
| 257 done | |
| 258 echo | |
| 259 } | |
| 260 | |
| 261 # Check for non-standard file system mount points and ask the user whether | |
| 262 # they should be imported into the chroot environment | |
| 263 # We limit to the first 26 mount points that much some basic heuristics, | |
| 264 # because a) that allows us to enumerate choices with a single character, | |
| 265 # and b) if we find more than 26 mount points, then these are probably | |
| 266 # false-positives and something is very unusual about the system's | |
| 267 # configuration. No need to spam the user with even more information that | |
| 268 # is likely completely irrelevant. | |
| 269 if [ -z "${bind_mounts}" ]; then | |
| 270 mounts="$(awk '$2 != "/" && $2 !~ "^/boot" && $2 !~ "^/home" && | |
| 271 $2 !~ "^/media" && $2 !~ "^/run" && | |
| 272 ($3 ~ "ext[2-4]" || $3 == "reiserfs" || $3 == "btrfs" || | |
| 273 $3 == "xfs" || $3 == "jfs" || $3 == "u?msdos" || | |
| 274 $3 == "v?fat" || $3 == "hfs" || $3 == "ntfs" || | |
| 275 $3 ~ "nfs[4-9]?" || $3 == "smbfs" || $3 == "cifs") { | |
| 276 print $2 | |
| 277 }' /proc/mounts | | |
| 278 head -n26)" | |
| 279 if [ -n "${mounts}" ]; then | |
| 280 echo "You appear to have non-standard mount points that you" | |
| 281 echo "might want to import into the chroot environment:" | |
| 282 echo | |
| 283 sel= | |
| 284 while :; do | |
| 285 # Print a menu, listing all non-default mounts of local or network | |
| 286 # file systems. | |
| 287 j=1; for m in ${mounts}; do | |
| 288 c="$(printf $(printf '\\%03o' $((64+$j))))" | |
| 289 echo "$sel" | grep -qs $c && | |
| 290 state="mounted in chroot" || state="$(tput el)" | |
| 291 printf " $c) %-40s${state}\n" "$m" | |
| 292 j=$(($j+1)) | |
| 293 done | |
| 294 # Allow user to interactively (de-)select any of the entries | |
| 295 echo | |
| 296 printf "Select mount points that you want to be included or press %s" \ | |
| 297 "SPACE to continue" | |
| 298 c="$(getkey | tr a-z A-Z)" | |
| 299 [ "$c" == " " ] && { echo; echo; break; } | |
| 300 if [ -z "$c" ] || | |
| 301 [ "$c" '<' 'A' -o $(ord "$c") -gt $((64 + $(ord "$j"))) ]; then | |
| 302 # Invalid input, ring the console bell | |
| 303 tput bel | |
| 304 else | |
| 305 # Toggle the selection for the given entry | |
| 306 if echo "$sel" | grep -qs $c; then | |
| 307 sel="$(printf "$sel" | sed "s/$c//")" | |
| 308 else | |
| 309 sel="$sel$c" | |
| 310 fi | |
| 311 fi | |
| 312 # Reposition cursor to the top of the list of entries | |
| 313 tput cuu $(($j + 1)) | |
| 314 echo | |
| 315 done | |
| 316 fi | |
| 317 j=1; for m in ${mounts}; do | |
| 318 c="$(chr $(($j + 64)))" | |
| 319 if echo "$sel" | grep -qs $c; then | |
| 320 bind_mounts="${bind_mounts}$m $m none rw,bind 0 0 | |
| 321 " | |
| 322 fi | |
| 323 j=$(($j+1)) | |
| 324 done | |
| 325 fi | |
| 326 | |
| 327 # Remove stale entry from /etc/schroot/schroot.conf. Entries start | |
| 328 # with the target name in square brackets, followed by an arbitrary | |
| 329 # number of lines. The entry stops when either the end of file has | |
| 330 # been reached, or when the beginning of a new target is encountered. | |
| 331 # This means, we cannot easily match for a range of lines in | |
| 332 # "sed". Instead, we actually have to iterate over each line and check | |
| 333 # whether it is the beginning of a new entry. | |
| 334 sudo sed -ni '/^[[]'"${target%bit}"']$/,${:1;n;/^[[]/b2;b1;:2;p;n;b2};p' \ | |
| 335 /etc/schroot/schroot.conf | |
| 336 | |
| 337 # Download base system. This takes some time | |
| 338 if [ -z "${mirror}" ]; then | |
| 339 grep -qs ubuntu.com /usr/share/debootstrap/scripts/"${distname}" && | |
| 340 mirror="http://archive.ubuntu.com/ubuntu" || | |
| 341 mirror="http://ftp.us.debian.org/debian" | |
| 342 fi | |
| 343 | |
| 344 sudo ${http_proxy:+http_proxy="${http_proxy}"} debootstrap ${archflag} \ | |
| 345 "${distname}" "/var/lib/chroot/${target}" "$mirror" | |
| 346 | |
| 347 # Add new entry to /etc/schroot/schroot.conf | |
| 348 grep -qs ubuntu.com /usr/share/debootstrap/scripts/"${distname}" && | |
| 349 brand="Ubuntu" || brand="Debian" | |
| 350 if [ -z "${chroot_groups}" ]; then | |
| 351 chroot_groups="${admin},$(id -gn)" | |
| 352 fi | |
| 353 | |
| 354 if [ -d '/etc/schroot/default' ]; then | |
| 355 new_version=1 | |
| 356 fstab="/etc/schroot/${target}/fstab" | |
| 357 else | |
| 358 new_version=0 | |
| 359 fstab="/etc/schroot/mount-${target}" | |
| 360 fi | |
| 361 | |
| 362 if [ "$new_version" = "1" ]; then | |
| 363 sudo cp -ar /etc/schroot/default /etc/schroot/${target} | |
| 364 | |
| 365 sudo sh -c 'cat >>/etc/schroot/schroot.conf' <<EOF | |
| 366 [${target%bit}] | |
| 367 description=${brand} ${distname} ${arch} | |
| 368 type=directory | |
| 369 directory=/var/lib/chroot/${target} | |
| 370 users=root | |
| 371 groups=${chroot_groups} | |
| 372 root-groups=${chroot_groups} | |
| 373 personality=linux$([ "${arch}" != 64bit ] && echo 32) | |
| 374 profile=${target} | |
| 375 | |
| 376 EOF | |
| 377 [ -n "${bind_mounts}" -a "${bind_mounts}" != "NONE" ] && | |
| 378 printf "${bind_mounts}" | | |
| 379 sudo sh -c "cat >>${fstab}" | |
| 380 else | |
| 381 # Older versions of schroot wanted a "priority=" line, whereas recent | |
| 382 # versions deprecate "priority=" and warn if they see it. We don't have | |
| 383 # a good feature test, but scanning for the string "priority=" in the | |
| 384 # existing "schroot.conf" file is a good indication of what to do. | |
| 385 priority=$(grep -qs 'priority=' /etc/schroot/schroot.conf && | |
| 386 echo 'priority=3' || :) | |
| 387 sudo sh -c 'cat >>/etc/schroot/schroot.conf' <<EOF | |
| 388 [${target%bit}] | |
| 389 description=${brand} ${distname} ${arch} | |
| 390 type=directory | |
| 391 directory=/var/lib/chroot/${target} | |
| 392 users=root | |
| 393 groups=${chroot_groups} | |
| 394 root-groups=${chroot_groups} | |
| 395 personality=linux$([ "${arch}" != 64bit ] && echo 32) | |
| 396 script-config=script-${target} | |
| 397 ${priority} | |
| 398 | |
| 399 EOF | |
| 400 | |
| 401 # Set up a list of mount points that is specific to this | |
| 402 # chroot environment. | |
| 403 sed '/^FSTAB=/s,"[^"]*","'"${fstab}"'",' \ | |
| 404 /etc/schroot/script-defaults | | |
| 405 sudo sh -c 'cat >/etc/schroot/script-'"${target}" | |
| 406 sed '\,^/home[/[:space:]],s/\([,[:space:]]\)bind[[:space:]]/\1rbind /' \ | |
| 407 /etc/schroot/mount-defaults | | |
| 408 sudo sh -c "cat > ${fstab}" | |
| 409 fi | |
| 410 | |
| 411 # Add the extra mount points that the user told us about | |
| 412 [ -n "${bind_mounts}" -a "${bind_mounts}" != "NONE" ] && | |
| 413 printf "${bind_mounts}" | | |
| 414 sudo sh -c 'cat >>'"${fstab}" | |
| 415 | |
| 416 # If this system has a "/media" mountpoint, import it into the chroot | |
| 417 # environment. Most modern distributions use this mount point to | |
| 418 # automatically mount devices such as CDROMs, USB sticks, etc... | |
| 419 if [ -d /media ] && | |
| 420 ! grep -qs '^/media' "${fstab}"; then | |
| 421 echo '/media /media none rw,rbind 0 0' | | |
| 422 sudo sh -c 'cat >>'"${fstab}" | |
| 423 fi | |
| 424 | |
| 425 # Share /dev/shm, /run and /run/shm. | |
| 426 grep -qs '^/dev/shm' "${fstab}" || | |
| 427 echo '/dev/shm /dev/shm none rw,bind 0 0' | | |
| 428 sudo sh -c 'cat >>'"${fstab}" | |
| 429 if [ ! -d "/var/lib/chroot/${target}/run" ] && | |
| 430 ! grep -qs '^/run' "${fstab}"; then | |
| 431 echo '/run /run none rw,bind 0 0' | | |
| 432 sudo sh -c 'cat >>'"${fstab}" | |
| 433 fi | |
| 434 if ! grep -qs '^/run/shm' "${fstab}"; then | |
| 435 { [ -d /run ] && echo '/run/shm /run/shm none rw,bind 0 0' || | |
| 436 echo '/dev/shm /run/shm none rw,bind 0 0'; } | | |
| 437 sudo sh -c 'cat >>'"${fstab}" | |
| 438 fi | |
| 439 | |
| 440 # Set up a special directory that changes contents depending on the target | |
| 441 # that is executing. | |
| 442 d="$(readlink -f "${HOME}/chroot" 2>/dev/null || echo "${HOME}/chroot")" | |
| 443 s="${d}/.${target}" | |
| 444 echo "${s} ${d} none rw,bind 0 0" | | |
| 445 sudo sh -c 'cat >>'"${target}" | |
| 446 mkdir -p "${s}" | |
| 447 | |
| 448 # Install a helper script to launch commands in the chroot | |
| 449 sudo sh -c 'cat >/usr/local/bin/'"${target%bit}" <<'EOF' | |
| 450 #!/bin/bash | |
| 451 | |
| 452 chroot="${0##*/}" | |
| 453 | |
| 454 wrap() { | |
| 455 # Word-wrap the text passed-in on stdin. Optionally, on continuation lines | |
| 456 # insert the same number of spaces as the number of characters in the | |
| 457 # parameter(s) passed to this function. | |
| 458 # If the "fold" program cannot be found, or if the actual width of the | |
| 459 # terminal cannot be determined, this function doesn't attempt to do any | |
| 460 # wrapping. | |
| 461 local f="$(type -P fold)" | |
| 462 [ -z "${f}" ] && { cat; return; } | |
| 463 local c="$(stty -a </dev/tty 2>/dev/null | | |
| 464 sed 's/.*columns[[:space:]]*\([0-9]*\).*/\1/;t;d')" | |
| 465 [ -z "${c}" ] && { cat; return; } | |
| 466 local i="$(echo "$*"|sed 's/./ /g')" | |
| 467 local j="$(printf %s "${i}"|wc -c)" | |
| 468 if [ "${c}" -gt "${j}" ]; then | |
| 469 dd bs=1 count="${j}" 2>/dev/null | |
| 470 "${f}" -sw "$((${c}-${j}))" | sed '2,$s/^/'"${i}"'/' | |
| 471 else | |
| 472 "${f}" -sw "${c}" | |
| 473 fi | |
| 474 } | |
| 475 | |
| 476 help() { | |
| 477 echo "Usage ${0##*/} [-h|--help] [-c|--clean] [-C|--clean-all] [-l|--list] [--
] args" | wrap "Usage ${0##*/} " | |
| 478 echo " help: print this message"
| wrap " " | |
| 479 echo " list: list all known chroot environments"
| wrap " " | |
| 480 echo " clean: remove all old chroot sessions for \"${chroot}\""
| wrap " " | |
| 481 echo " clean-all: remove all old chroot sessions for all environments"
| wrap " " | |
| 482 exit 0 | |
| 483 } | |
| 484 | |
| 485 clean() { | |
| 486 local s t rc | |
| 487 rc=0 | |
| 488 for s in $(schroot -l --all-sessions); do | |
| 489 if [ -n "$1" ]; then | |
| 490 t="${s#session:}" | |
| 491 [ "${t#${chroot}-}" == "${t}" ] && continue | |
| 492 fi | |
| 493 if ls -l /proc/*/{cwd,fd} 2>/dev/null | | |
| 494 fgrep -qs "/var/lib/schroot/mount/${t}"; then | |
| 495 echo "Session \"${t}\" still has active users, not cleaning up" | wrap | |
| 496 rc=1 | |
| 497 continue | |
| 498 fi | |
| 499 sudo schroot -c "${s}" -e || rc=1 | |
| 500 done | |
| 501 exit ${rc} | |
| 502 } | |
| 503 | |
| 504 list() { | |
| 505 for e in $(schroot -l); do | |
| 506 e="${e#chroot:}" | |
| 507 [ -x "/usr/local/bin/${e}" ] || continue | |
| 508 if schroot -l --all-sessions 2>/dev/null | | |
| 509 sed 's/^session://' | | |
| 510 grep -qs "^${e}-"; then | |
| 511 echo "${e} is currently active" | |
| 512 else | |
| 513 echo "${e}" | |
| 514 fi | |
| 515 done | |
| 516 exit 0 | |
| 517 } | |
| 518 | |
| 519 while [ "$#" -ne 0 ]; do | |
| 520 case "$1" in | |
| 521 --) shift; break;; | |
| 522 -h|--help) shift; help;; | |
| 523 -l|--list) shift; list;; | |
| 524 -c|--clean) shift; clean "${chroot}";; | |
| 525 -C|--clean-all) shift; clean;; | |
| 526 *) break;; | |
| 527 esac | |
| 528 done | |
| 529 | |
| 530 # Start a new chroot session and keep track of the session id. We inject this | |
| 531 # id into all processes that run inside the chroot. Unless they go out of their | |
| 532 # way to clear their environment, we can then later identify our child and | |
| 533 # grand-child processes by scanning their environment. | |
| 534 session="$(schroot -c "${chroot}" -b)" | |
| 535 export CHROOT_SESSION_ID="${session}" | |
| 536 | |
| 537 # Set GOMA_TMP_DIR for better handling of goma inside chroot. | |
| 538 export GOMA_TMP_DIR="/tmp/goma_tmp_$CHROOT_SESSION_ID" | |
| 539 mkdir -p "$GOMA_TMP_DIR" | |
| 540 | |
| 541 if [ $# -eq 0 ]; then | |
| 542 # Run an interactive shell session | |
| 543 schroot -c "${session}" -r -p | |
| 544 else | |
| 545 # Run a command inside of the chroot environment | |
| 546 p="$1"; shift | |
| 547 schroot -c "${session}" -r -p "$p" -- "$@" | |
| 548 fi | |
| 549 rc=$? | |
| 550 | |
| 551 # Compute the inode of the root directory inside of the chroot environment. | |
| 552 i=$(schroot -c "${session}" -r -p ls -- -id /proc/self/root/. | | |
| 553 awk '{ print $1 }') 2>/dev/null | |
| 554 other_pids= | |
| 555 while [ -n "$i" ]; do | |
| 556 # Identify processes by the inode number of their root directory. Then | |
| 557 # remove all processes that we know belong to other sessions. We use | |
| 558 # "sort | uniq -u" to do what amounts to a "set substraction operation". | |
| 559 pids=$({ ls -id1 /proc/*/root/. 2>/dev/null | | |
| 560 sed -e 's,^[^0-9]*'$i'.*/\([1-9][0-9]*\)/.*$,\1, | |
| 561 t | |
| 562 d'; | |
| 563 echo "${other_pids}"; | |
| 564 echo "${other_pids}"; } | sort | uniq -u) >/dev/null 2>&1 | |
| 565 # Kill all processes that are still left running in the session. This is | |
| 566 # typically an assortment of daemon processes that were started | |
| 567 # automatically. They result in us being unable to tear down the session | |
| 568 # cleanly. | |
| 569 [ -z "${pids}" ] && break | |
| 570 for j in $pids; do | |
| 571 # Unfortunately, the way that schroot sets up sessions has the | |
| 572 # side-effect of being unable to tell one session apart from another. | |
| 573 # This can result in us attempting to kill processes in other sessions. | |
| 574 # We make a best-effort to avoid doing so. | |
| 575 k="$( ( xargs -0 -n1 </proc/$j/environ ) 2>/dev/null | | |
| 576 sed 's/^CHROOT_SESSION_ID=/x/;t1;d;:1;q')" | |
| 577 if [ -n "${k}" -a "${k#x}" != "${session}" ]; then | |
| 578 other_pids="${other_pids} | |
| 579 ${j}" | |
| 580 continue | |
| 581 fi | |
| 582 kill -9 $pids | |
| 583 done | |
| 584 done | |
| 585 # End the chroot session. This should clean up all temporary files. But if we | |
| 586 # earlier failed to terminate all (daemon) processes inside of the session, | |
| 587 # deleting the session could fail. When that happens, the user has to manually | |
| 588 # clean up the stale files by invoking us with "--clean" after having killed | |
| 589 # all running processes. | |
| 590 schroot -c "${session}" -e | |
| 591 # Since no goma processes are running, we can remove goma directory. | |
| 592 rm -rf "$GOMA_TMP_DIR" | |
| 593 exit $rc | |
| 594 EOF | |
| 595 sudo chown root:root /usr/local/bin/"${target%bit}" | |
| 596 sudo chmod 755 /usr/local/bin/"${target%bit}" | |
| 597 | |
| 598 # Add the standard Ubuntu update repositories if requested. | |
| 599 [ "${alt_repos}" = "y" -a \ | |
| 600 -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] && | |
| 601 sudo sed -i '/^deb .* [^ -]\+ main$/p | |
| 602 s/^\(deb .* [^ -]\+\) main/\1-security main/ | |
| 603 p | |
| 604 t1 | |
| 605 d | |
| 606 :1;s/-security main/-updates main/ | |
| 607 t | |
| 608 d' "/var/lib/chroot/${target}/etc/apt/sources.list" | |
| 609 | |
| 610 # Add a few more repositories to the chroot | |
| 611 [ -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] && | |
| 612 sudo sed -i 's/ main$/ main restricted universe multiverse/' \ | |
| 613 "/var/lib/chroot/${target}/etc/apt/sources.list" | |
| 614 | |
| 615 # Add the Ubuntu "partner" repository, if available | |
| 616 if [ -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] && | |
| 617 HEAD "http://archive.canonical.com/ubuntu/dists/${distname}/partner" \ | |
| 618 >&/dev/null; then | |
| 619 sudo sh -c ' | |
| 620 echo "deb http://archive.canonical.com/ubuntu" \ | |
| 621 "'"${distname}"' partner" \ | |
| 622 >>"/var/lib/chroot/'"${target}"'/etc/apt/sources.list"' | |
| 623 fi | |
| 624 | |
| 625 # Add source repositories, if the user requested we do so | |
| 626 [ "${add_srcs}" = "y" -a \ | |
| 627 -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] && | |
| 628 sudo sed -i '/^deb[^-]/p | |
| 629 s/^deb\([^-]\)/deb-src\1/' \ | |
| 630 "/var/lib/chroot/${target}/etc/apt/sources.list" | |
| 631 | |
| 632 # Set apt proxy if host has set http_proxy | |
| 633 if [ -n "${http_proxy}" ]; then | |
| 634 sudo sh -c ' | |
| 635 echo "Acquire::http::proxy \"'"${http_proxy}"'\";" \ | |
| 636 >>"/var/lib/chroot/'"${target}"'/etc/apt/apt.conf"' | |
| 637 fi | |
| 638 | |
| 639 # Update packages | |
| 640 sudo "/usr/local/bin/${target%bit}" /bin/sh -c ' | |
| 641 apt-get update; apt-get -y dist-upgrade' || : | |
| 642 | |
| 643 # Install a couple of missing packages | |
| 644 for i in debian-keyring ubuntu-keyring locales sudo; do | |
| 645 [ -d "/var/lib/chroot/${target}/usr/share/doc/$i" ] || | |
| 646 sudo "/usr/local/bin/${target%bit}" apt-get -y install "$i" || : | |
| 647 done | |
| 648 | |
| 649 # Configure locales | |
| 650 sudo "/usr/local/bin/${target%bit}" /bin/sh -c ' | |
| 651 l='"${LANG:-en_US}"'; l="${l%%.*}" | |
| 652 [ -r /etc/locale.gen ] && | |
| 653 sed -i "s/^# \($l\)/\1/" /etc/locale.gen | |
| 654 locale-gen $LANG en_US en_US.UTF-8' || : | |
| 655 | |
| 656 # Enable multi-arch support, if available | |
| 657 sudo "/usr/local/bin/${target%bit}" dpkg --assert-multi-arch >&/dev/null && | |
| 658 [ -r "/var/lib/chroot/${target}/etc/apt/sources.list" ] && { | |
| 659 sudo sed -i 's/ / [arch=amd64,i386] /' \ | |
| 660 "/var/lib/chroot/${target}/etc/apt/sources.list" | |
| 661 [ -d /var/lib/chroot/${target}/etc/dpkg/dpkg.cfg.d/ ] && | |
| 662 sudo "/usr/local/bin/${target%bit}" dpkg --add-architecture \ | |
| 663 $([ "${arch}" = "32bit" ] && echo amd64 || echo i386) >&/dev/null || | |
| 664 echo foreign-architecture \ | |
| 665 $([ "${arch}" = "32bit" ] && echo amd64 || echo i386) | | |
| 666 sudo sh -c \ | |
| 667 "cat >'/var/lib/chroot/${target}/etc/dpkg/dpkg.cfg.d/multiarch'" | |
| 668 } | |
| 669 | |
| 670 # Configure "sudo" package | |
| 671 sudo "/usr/local/bin/${target%bit}" /bin/sh -c ' | |
| 672 egrep -qs '"'^$(id -nu) '"' /etc/sudoers || | |
| 673 echo '"'$(id -nu) ALL=(ALL) ALL'"' >>/etc/sudoers' | |
| 674 | |
| 675 # Install a few more commonly used packages | |
| 676 sudo "/usr/local/bin/${target%bit}" apt-get -y install \ | |
| 677 autoconf automake1.9 dpkg-dev g++-multilib gcc-multilib gdb less libtool \ | |
| 678 lsof strace | |
| 679 | |
| 680 # If running a 32bit environment on a 64bit machine, install a few binaries | |
| 681 # as 64bit. This is only done automatically if the chroot distro is the same as | |
| 682 # the host, otherwise there might be incompatibilities in build settings or | |
| 683 # runtime dependencies. The user can force it with the '-c' flag. | |
| 684 host_distro=$(grep -s DISTRIB_CODENAME /etc/lsb-release | \ | |
| 685 cut -d "=" -f 2) | |
| 686 if [ "${copy_64}" = "y" -o \ | |
| 687 "${host_distro}" = "${distname}" -a "${arch}" = 32bit ] && \ | |
| 688 file /bin/bash 2>/dev/null | grep -q x86-64; then | |
| 689 readlinepkg=$(sudo "/usr/local/bin/${target%bit}" sh -c \ | |
| 690 'apt-cache search "lib64readline.\$" | sort | tail -n 1 | cut -d " " -f 1') | |
| 691 sudo "/usr/local/bin/${target%bit}" apt-get -y install \ | |
| 692 lib64expat1 lib64ncurses5 ${readlinepkg} lib64z1 lib64stdc++6 | |
| 693 dep= | |
| 694 for i in binutils gdb; do | |
| 695 [ -d /usr/share/doc/"$i" ] || dep="$dep $i" | |
| 696 done | |
| 697 [ -n "$dep" ] && sudo apt-get -y install $dep | |
| 698 sudo mkdir -p "/var/lib/chroot/${target}/usr/local/lib/amd64" | |
| 699 for i in libbfd libpython; do | |
| 700 lib="$({ ldd /usr/bin/ld; ldd /usr/bin/gdb; } | | |
| 701 grep -s "$i" | awk '{ print $3 }')" | |
| 702 if [ -n "$lib" -a -r "$lib" ]; then | |
| 703 sudo cp "$lib" "/var/lib/chroot/${target}/usr/local/lib/amd64" | |
| 704 fi | |
| 705 done | |
| 706 for lib in libssl libcrypt; do | |
| 707 for path in /usr/lib /usr/lib/x86_64-linux-gnu; do | |
| 708 sudo cp $path/$lib* \ | |
| 709 "/var/lib/chroot/${target}/usr/local/lib/amd64/" >&/dev/null || : | |
| 710 done | |
| 711 done | |
| 712 for i in gdb ld; do | |
| 713 sudo cp /usr/bin/$i "/var/lib/chroot/${target}/usr/local/lib/amd64/" | |
| 714 sudo sh -c "cat >'/var/lib/chroot/${target}/usr/local/bin/$i'" <<EOF | |
| 715 #!/bin/sh | |
| 716 exec /lib64/ld-linux-x86-64.so.2 --library-path /usr/local/lib/amd64 \ | |
| 717 /usr/local/lib/amd64/$i "\$@" | |
| 718 EOF | |
| 719 sudo chmod 755 "/var/lib/chroot/${target}/usr/local/bin/$i" | |
| 720 done | |
| 721 fi | |
| 722 | |
| 723 | |
| 724 # If the install-build-deps.sh script can be found, offer to run it now | |
| 725 script="$(dirname $(readlink -f "$0"))/install-build-deps.sh" | |
| 726 if [ -x "${script}" ]; then | |
| 727 while :; do | |
| 728 echo | |
| 729 echo "If you plan on building Chrome inside of the new chroot environment," | |
| 730 echo "you now have to install the build dependencies. Do you want me to" | |
| 731 printf "start the script that does this for you (y/n)? " | |
| 732 read install_deps | |
| 733 case "${install_deps}" in | |
| 734 y|Y) | |
| 735 echo | |
| 736 # We prefer running the script in-place, but this might not be | |
| 737 # possible, if it lives on a network filesystem that denies | |
| 738 # access to root. | |
| 739 tmp_script= | |
| 740 if ! sudo /usr/local/bin/"${target%bit}" \ | |
| 741 sh -c "[ -x '${script}' ]" >&/dev/null; then | |
| 742 tmp_script="/tmp/${script##*/}" | |
| 743 cp "${script}" "${tmp_script}" | |
| 744 fi | |
| 745 # Some distributions automatically start an instance of the system- | |
| 746 # wide dbus daemon, cron daemon or of the logging daemon, when | |
| 747 # installing the Chrome build depencies. This prevents the chroot | |
| 748 # session from being closed. So, we always try to shut down any running | |
| 749 # instance of dbus and rsyslog. | |
| 750 sudo /usr/local/bin/"${target%bit}" sh -c "${script}; | |
| 751 rc=$?; | |
| 752 /etc/init.d/cron stop >/dev/null 2>&1 || :; | |
| 753 /etc/init.d/rsyslog stop >/dev/null 2>&1 || :; | |
| 754 /etc/init.d/dbus stop >/dev/null 2>&1 || :; | |
| 755 exit $rc" | |
| 756 rc=$? | |
| 757 [ -n "${tmp_script}" ] && rm -f "${tmp_script}" | |
| 758 [ $rc -ne 0 ] && exit $rc | |
| 759 break | |
| 760 ;; | |
| 761 n|N) | |
| 762 break | |
| 763 ;; | |
| 764 esac | |
| 765 done | |
| 766 echo | |
| 767 fi | |
| 768 | |
| 769 # Check whether ~/chroot is on a (slow) network file system and offer to | |
| 770 # relocate it. Also offer relocation, if the user appears to have multiple | |
| 771 # spindles (as indicated by "${bind_mount}" being non-empty). | |
| 772 # We only offer this option, if it doesn't look as if a chroot environment | |
| 773 # is currently active. Otherwise, relocation is unlikely to work and it | |
| 774 # can be difficult for the user to recover from the failed attempt to relocate | |
| 775 # the ~/chroot directory. | |
| 776 # We don't aim to solve this problem for every configuration, | |
| 777 # but try to help with the common cases. For more advanced configuration | |
| 778 # options, the user can always manually adjust things. | |
| 779 mkdir -p "${HOME}/chroot/" | |
| 780 if [ ! -h "${HOME}/chroot" ] && | |
| 781 ! egrep -qs '^[^[:space:]]*/chroot' /etc/fstab && | |
| 782 { [ -n "${bind_mounts}" -a "${bind_mounts}" != "NONE" ] || | |
| 783 is_network_drive "${HOME}/chroot"; } && | |
| 784 ! egrep -qs '/var/lib/[^/]*chroot/.*/chroot' /proc/mounts; then | |
| 785 echo "${HOME}/chroot is currently located on the same device as your" | |
| 786 echo "home directory." | |
| 787 echo "This might not be what you want. Do you want me to move it somewhere" | |
| 788 echo "else?" | |
| 789 # If the computer has multiple spindles, many users configure all or part of | |
| 790 # the secondary hard disk to be writable by the primary user of this machine. | |
| 791 # Make some reasonable effort to detect this type of configuration and | |
| 792 # then offer a good location for where to put the ~/chroot directory. | |
| 793 suggest= | |
| 794 for i in $(echo "${bind_mounts}"|cut -d ' ' -f 1); do | |
| 795 if [ -d "$i" -a -w "$i" -a \( ! -a "$i/chroot" -o -w "$i/chroot/." \) ] && | |
| 796 ! is_network_drive "$i"; then | |
| 797 suggest="$i" | |
| 798 else | |
| 799 for j in "$i/"*; do | |
| 800 if [ -d "$j" -a -w "$j" -a \ | |
| 801 \( ! -a "$j/chroot" -o -w "$j/chroot/." \) ] && | |
| 802 ! is_network_drive "$j"; then | |
| 803 suggest="$j" | |
| 804 else | |
| 805 for k in "$j/"*; do | |
| 806 if [ -d "$k" -a -w "$k" -a \ | |
| 807 \( ! -a "$k/chroot" -o -w "$k/chroot/." \) ] && | |
| 808 ! is_network_drive "$k"; then | |
| 809 suggest="$k" | |
| 810 break | |
| 811 fi | |
| 812 done | |
| 813 fi | |
| 814 [ -n "${suggest}" ] && break | |
| 815 done | |
| 816 fi | |
| 817 [ -n "${suggest}" ] && break | |
| 818 done | |
| 819 def_suggest="${HOME}" | |
| 820 if [ -n "${suggest}" ]; then | |
| 821 # For home directories that reside on network drives, make our suggestion | |
| 822 # the default option. For home directories that reside on a local drive, | |
| 823 # require that the user manually enters the new location. | |
| 824 if is_network_drive "${HOME}"; then | |
| 825 def_suggest="${suggest}" | |
| 826 else | |
| 827 echo "A good location would probably be in \"${suggest}\"" | |
| 828 fi | |
| 829 fi | |
| 830 while :; do | |
| 831 printf "Physical location [${def_suggest}]: " | |
| 832 read dir | |
| 833 [ -z "${dir}" ] && dir="${def_suggest}" | |
| 834 [ "${dir%%/}" == "${HOME%%/}" ] && break | |
| 835 if ! [ -d "${dir}" -a -w "${dir}" ] || | |
| 836 [ -a "${dir}/chroot" -a ! -w "${dir}/chroot/." ]; then | |
| 837 echo "Cannot write to ${dir}/chroot. Please try again" | |
| 838 else | |
| 839 mv "${HOME}/chroot" "${dir}/chroot" | |
| 840 ln -s "${dir}/chroot" "${HOME}/chroot" | |
| 841 for i in $(list_all_chroots); do | |
| 842 sudo "$i" mkdir -p "${dir}/chroot" | |
| 843 done | |
| 844 sudo sed -i "s,${HOME}/chroot,${dir}/chroot,g" /etc/schroot/mount-* | |
| 845 break | |
| 846 fi | |
| 847 done | |
| 848 fi | |
| 849 | |
| 850 # Clean up package files | |
| 851 sudo schroot -c "${target%bit}" -p -- apt-get clean | |
| 852 sudo apt-get clean | |
| 853 | |
| 854 trap '' INT TERM QUIT HUP | |
| 855 trap '' EXIT | |
| 856 | |
| 857 # Let the user know what we did | |
| 858 cat <<EOF | |
| 859 | |
| 860 | |
| 861 Successfully installed ${distname} ${arch} | |
| 862 | |
| 863 You can run programs inside of the chroot by invoking the | |
| 864 "/usr/local/bin/${target%bit}" command. | |
| 865 | |
| 866 This command can be used with arguments, in order to just run a single | |
| 867 program inside of the chroot environment (e.g. "${target%bit} make chrome") | |
| 868 or without arguments, in order to run an interactive shell session inside | |
| 869 of the chroot environment. | |
| 870 | |
| 871 If you need to run things as "root", you can use "sudo" (e.g. try | |
| 872 "sudo ${target%bit} apt-get update"). | |
| 873 | |
| 874 Your home directory is shared between the host and the chroot. But I | |
| 875 configured "${HOME}/chroot" to be private to the chroot environment. | |
| 876 You can use it for files that need to differ between environments. This | |
| 877 would be a good place to store binaries that you have built from your | |
| 878 source files. | |
| 879 | |
| 880 For Chrome, this probably means you want to make your "out" directory a | |
| 881 symbolic link that points somewhere inside of "${HOME}/chroot". | |
| 882 | |
| 883 You still need to run "gclient runhooks" whenever you switch from building | |
| 884 outside of the chroot to inside of the chroot. But you will find that you | |
| 885 don't have to repeatedly erase and then completely rebuild all your object | |
| 886 and binary files. | |
| 887 | |
| 888 EOF | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2392643003:
Removes files from //build that we don't need (Closed)
