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simplechroot (draft#3 - 4.31 Phoenix)

s243a
Mar 14th, 2021
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  1. #!/bin/bash
  2. set -x
  3. export LC_ALL=C
  4. CWD="$(realpath "$(dirname "${0%/*}")")"
  5. cd "$CWD"
  6.  
  7. EXTRA_SFS=( ../devx_430-1.sfs ) #../Palemoon-portable_29.0.1.sfs
  8.  
  9. Cont_Root=/mnt/cont
  10. #TODO: fix spelling of CONT_NAME_SOUCE
  11. CONT_NAME_SOUCE="" #These manes must have a length greater than 1 so as to exclude "/". I'll make this more general later
  12. CONT_NAME_DEST="puppy4_palemoon"
  13.  
  14. unset CHROOT_CMD; [ -z "$CHROOT_CMD" ] && CHROOT_CMD=/init_basic #/opt/PaleMoon-portable-v29.01/LAUNCH #defaultbrowser
  15. unset EXECUTE
  16. unset NO_EXIT
  17. unset Mount_PT_to_Del # xephyr-disp
  18. declare -a options="$(busybox getopt -o c:,e:,n: -l "chroot-command::,chroot-cmd::,cmd::,command::,no-exit::,source-subdir:,dest-subdir:,xephyr-disp::,use-unshare::" -- "$@")"
  19. #eval set --"$options_str"
  20. eval set --"$options"
  21. while [ $# -gt 0 ]; do
  22. case "$1" in
  23. --use-unshare)
  24. if [ $# -lt 2 ] || [[ $2 = -* ]]; then
  25. USE_UNSHAR=":2"
  26. shift 1
  27. else
  28. USE_UNSHAR="yes"
  29. shift 2
  30. fi
  31. ;;
  32. --xephyr-disp)
  33. if [ $# -lt 2 ] || [[ $2 != :* ]]; then
  34. XephyrDISPLAY=":2"
  35. shift 1
  36. else
  37. XephyrDISPLAY="$2"
  38. shift 2
  39. fi
  40. ;;
  41. -c|--chroot-cmd|--chroot-command)
  42. if [ $# -lt 2 ] || [[ $2 = -* ]]; then
  43. CHROOT_CMD=( /bin/sh )
  44. shift 1
  45. else
  46. CHROOT_CMD=( $2 )
  47. shift 2
  48. fi
  49. [ -z ${EXECUTE+x} ] && EXECUTE=""
  50. ;;
  51. -e|--cmd|--command)
  52. if [ $# -lt 2 ] || [[ $2 = -* ]]; then
  53. EXECUTE=( /bin/sh )
  54. shift 1
  55. else
  56. EXECUTE=( $2 )
  57. shift 2
  58. fi
  59. [ -z ${CHROOT_CMD+x} ] && CHROOT_CMD=""
  60. ;;
  61. --source-subdir)
  62. CONT_NAME_SOUCE="$2"
  63. shift 2
  64. ;;
  65. --dest-subdir)
  66. CONT_NAME_DEST="$2"
  67. shift 2
  68. ;;
  69. --no-exit)
  70. if [ $# -lt 2 ] || [[ $2 = 1* ]]; then
  71. NO_EXIT=true
  72. shift 1
  73. else
  74. NO_EXIT=$2
  75. shift 2
  76. fi
  77. ;;
  78. --)
  79. shift
  80. break
  81. ;;
  82. *)
  83. shift
  84. ;;
  85. esac
  86. done
  87. export CONT_NAME_DEST="$CONT_NAME_DEST"
  88. if [ -z ${NO_EXIT+x} ]; then
  89. NO_EXIT=false
  90. fi
  91. if [ -z ${CHROOT_CMD+x} ] && [ -z ${EXECUTE+x} ]; then
  92. CHROOT_CMD=( /bin/sh )
  93. EXECUTE=""
  94. fi
  95. for a_pattern in 'puppy_.*[.]sfs' '.*iron.*[.]sfs' '.*chromium.*[.]sfs' '.*firefox.*[.]sfs'; do
  96. SFS_NAME="$(ls -1 .. | grep -E "$a_pattern" | head -n 1 | sed -r 's#^[.][.]/##g' | sed -r 's#[.]sfs##g')"
  97. [ ! -z "$SFS_NAME" ] && break
  98. done
  99. Parent_WD="$(realpath "$PWD/..")"
  100. SFS_PATH="$Parent_WD/$SFS_NAME".sfs
  101. SFS_PATH="$(realpath "$SFS_PATH")"
  102.  
  103. Mount_PT_ID="" #Don't edit this
  104. function umountall(){
  105. set +x
  106. read -p "umountall(): Press enter to continue"
  107. set -x
  108.  
  109. umount -l /${CONT_NAME_DEST}/tmp/.X11-unix
  110. umount -l /${CONT_NAME_DEST}/dev/pts
  111. umount -l /${CONT_NAME_DEST}/dev
  112. umount -l /${CONT_NAME_DEST}/proc
  113. umount -l /${CONT_NAME_DEST}/sys
  114. umount -l "/$CONT_NAME_DEST"
  115. umount -l "$Cont_TMPFS"
  116. umount -l "${BIND_Target}"
  117. for a_mp in "${EXTRA_SFS_MPS[@]}"; do
  118. umount -l "$a_mp"
  119. done
  120. if [ -z ${Mount_PT_to_Del+x} ]; then
  121. files_to_remove=("/${CONT_NAME_DEST}" "$Cont_TMPFS" "$BIND_Target_Root")
  122. else
  123. files_to_remove=("/${CONT_NAME_DEST}" "$Cont_TMPFS" "$Mount_PT_to_Del" "$BIND_Target_Root")
  124. fi
  125. for to_remove in "${files_to_remove[@]}"; do
  126. to_remove="$(realpath "/${to_remove}")"
  127. if [ -z "$(cat /proc/mounts | grep "${to_remove}")" ] &&
  128. [ ${#to_remove} -gt 1 ]; then
  129. rm -rf ${to_remove}
  130. fi
  131. done
  132.  
  133. xhost -
  134. }
  135.  
  136. trap 'umountall' 1
  137.  
  138. if [ ! -e "/${CONT_NAME_DEST}" ] && [ ! -h "/${CONT_NAME_DEST}" ] || [ -z "$(ls -A "/${CONT_NAME_DEST}")" ]; then
  139. mkdir -p /${CONT_NAME_DEST}
  140. else
  141. cd /
  142. CONT_NAME_DEST=$(mktemp -d ${CONT_NAME_DEST}.XXXXXXX)
  143. fi
  144.  
  145. append_mnt_id_awk='
  146. function get_mnt_id(mnt_pt,loop){
  147. if (length(mnt_pt) > 0 && length(loop)>0){
  148. cmd="cat /proc/self/mountinfo | sort | grep '" loop "' | grep " mnt_pt " | head -n 1"
  149. } else if (length(mnt_pt) > 0){
  150. cmd="cat /proc/self/mountinfo | sort | grep '" mnt_pt "' | head -n 1"
  151. } else if (length(loop)>0){
  152. cmd="cat /proc/self/mountinfo | sort | grep '" loop "' | head -n 1"
  153. }
  154. while ((cmd | getline )){
  155. mnt_id=$1
  156. break
  157. }
  158. close(cmd)
  159. return mnt_id
  160. }
  161. {
  162. mnt_pt=$1
  163. loop=$2
  164. mnt_id=get_mnt_id(mnt_pt,loop)
  165. print mnt_id "|" mnt_pt "|" loop
  166. }'
  167.  
  168. loop=$(losetup -a | grep "$SFS_PATH" | sed "s/:.*$//" )
  169. if [ ! -z "$loop" ]; then
  170. #Mount_PT=$(findmnt -o TARGET,SOURCE -D -n | grep "${loop}\$" | cut -f1 -d' ')
  171. Mount_PT="$(findmnt -o TARGET,SOURCE -D -n | grep "${loop}\$" | awk "$append_mnt_id_awk" | sort -t '|' -k1 | cut -d'|' -f2 | head -n 1)"
  172. fi
  173. if [ -z "$Mount_PT" ] || [ -z "$loop" ]; then
  174. Mount_PT=${CHROOT_DIR:-/mnt/cont/sfs_img}
  175. if [ -d "$Mount_PT" ]; then
  176. echo "Directory is empty but exists: $Mount_PT" >&2
  177. elif [ ! -z "$(ls -A "$Mount_PT")" ]; then
  178. Mount_PT=$(mktemp -d -p "$Cont_Root" sfs_img.XXXXXXX)
  179. Mount_PT_ID=".${Mount_PT##*.}"
  180. mkdir -p "${Mount_PT}"
  181. fi
  182. mkdir -p "${Mount_PT}"
  183. mount -o loop "$SFS_PATH" "$Mount_PT"
  184. Mount_PT_to_Del=$Mount_PT
  185. fi
  186. #MNTPNT=${CHROOT_DIR:-/mnt/chroot-$SFS_NAME}
  187.  
  188. if [ ${#CONT_NAME_SOUCE} -le 1 ]; then
  189. BIND_Source="${Mount_PT}"
  190. else
  191. BIND_Source="${Mount_PT}/${CONT_NAME_SOUCE}"
  192. fi
  193. #mkdir -p "$BIND_Source"
  194.  
  195. BIND_Target_Root="$Cont_Root"/sfs__target${Mount_PT_ID}
  196. if [ ${#Mount_PT_ID} -gt 0 ]; then
  197. BIND_Target_Root="$Cont_Root"/sfs__target${Mount_PT_ID}
  198. elif [ -z "$(ls -A "$BIND_Target_Root")" ]; then
  199. BIND_Target_Root="$Cont_Root"/sfs__target
  200. else
  201. BIND_Target_Root=$(mktemp -d -p "$Cont_Root" sfs__target.XXXXXXX)
  202. fi
  203. mkdir -p "$BIND_Target_Root"
  204.  
  205. if [ ${#CONT_NAME_DEST} -gt 0 ]; then
  206. BIND_Target=$BIND_Target_Root/${CONT_NAME_DEST}
  207. else
  208. BIND_Target=$BIND_Target_Root
  209. fi
  210. mkdir -p "$BIND_Target"
  211.  
  212. if [ ${#Mount_PT_ID} -gt 0 ]; then
  213. Cont_TMPFS="$Cont_Root"/tmpfs${Mount_PT_ID}
  214. elif [ -z "$(ls -A "${Cont_Root}/tmpfs")" ]; then
  215. Cont_TMPFS="$Cont_Root"/tmpfs
  216. else
  217. Cont_TMPFS=$(mktemp -d -p "$Cont_Root" tmpfs.XXXXXXX)
  218. fi
  219. mkdir -p "$Cont_TMPFS"
  220. mount -t tmpfs none "$Cont_TMPFS"
  221. #mount -t tmpfs none $BIND_Target_Root;
  222. append_mnt_id_awk='
  223. function get_mnt_id(mnt_pt,loop){
  224. if (length(mnt_pt) > 0 && length(loop)>0){
  225. cmd="cat /proc/self/mountinfo | sort | grep '" loop "' | grep " mnt_pt " | head -n 1"
  226. } else if (length(mnt_pt) > 0){
  227. cmd="cat /proc/self/mountinfo | sort | grep '" mnt_pt "' | head -n 1"
  228. } else if (length(loop)>0){
  229. cmd="cat /proc/self/mountinfo | sort | grep '" loop "' | head -n 1"
  230. }
  231. while ((cmd | getline )){
  232. mnt_id=$1
  233. break
  234. }
  235. close(cmd)
  236. return mnt_id
  237. }
  238. {
  239. mnt_pt=$1
  240. loop=$2
  241. mnt_id=get_mnt_id(mnt_pt,loop)
  242. print mnt_id "|" mnt_pt "|" loop
  243. }'
  244. EXTRA_SFS_MPS=()
  245. for a_sfs_o in "${EXTRA_SFS[@]}"; do
  246. a_sfs="$(realpath "$a_sfs_o")"
  247. [ -z "$a_sfs" ] && a_sfs="$(realpath "../$a_sfs_o")"
  248. [ -z "$a_sfs" ] && a_sfs=$(cd .. ; echo `pwd`/$a_sfs_o)
  249. [ ! -f "$a_sfs" ] && continue
  250. a_sfs_bname="$(basename "$a_sfs")"
  251. if [ ${#Mount_PT_ID} -gt 0 ]; then
  252. a_sfs_MP="$Cont_Root"/"$a_sfs_bname"${Mount_PT_ID}
  253. elif [ -z "$(ls -A "${Cont_Root}/a_sfs_bname")" ]; then
  254. a_sfs_MP="$Cont_Root"/"$a_sfs_bname"
  255. else
  256. a_sfs_MP=$(mktemp -d -p "$Cont_Root" a_sfs_bname.XXXXXXX)
  257. fi
  258.  
  259. mkdir -p "$a_sfs_MP"
  260. loop=$(losetup -a | grep "${a_sfs}" | sed "s/:.*$//" )
  261. if [ ! -z "$loop" ]; then #
  262. sfs_MP="$(findmnt -o TARGET,SOURCE -D -n | grep $loop\$ | awk "$append_mnt_id_awk" | sort -t '|' -k1 | cut -d'|' -f2 | head -n 1)"
  263. mount --bind "${sfs_MP}" "${a_sfs_MP}"
  264. else
  265. mount -r -t squashfs "${a_sfs}" "$a_sfs_MP"
  266.  
  267. fi
  268. [ -d "$a_sfs_MP" ] && [ -f "$a_sfs" ] && EXTRA_SFS_MPS+=("$a_sfs_MP")
  269. done
  270.  
  271. #NEW=''
  272. #MOUNTED_PUP_RO=$(busybox df | grep -o '/initrd/pup_ro.*')
  273. ## pup_ro1 and pup_ro2 are reserved
  274. #for i in $(seq 3 99) # find free pup_roX
  275. #do
  276. # if ! [ "$(echo "$MOUNTED_PUP_RO" | grep "pup_ro${i}$")" ] ; then
  277. # NEW=${i}
  278. # break
  279. # fi
  280. #done
  281. #Cont_Layer=/initrd/pup_ro$NEW
  282.  
  283.  
  284.  
  285.  
  286. mount --bind "${BIND_Source}" "${BIND_Target}"
  287. #ln -s "$BIND_Target_Root" "$Cont_Layer"
  288. #set +x
  289. #read -p "Press enter to continue"
  290. #set -x
  291.  
  292.  
  293. BRANCHES="udba=reval,diropq=w,br:${Cont_TMPFS}=rw:${BIND_Target}=rr"
  294. for a_branch in "${EXTRA_SFS_MPS[@]}"; do
  295. BRANCHES+=":$a_branch=ro"
  296. done
  297.  
  298. busybox mount -t aufs -o "$BRANCHES" aufs "/$CONT_NAME_DEST" || { umountall && exit 1; }
  299. #busybox mount -t aufs -o remount,append:$BIND_Target_Root=rr / || { umountall && exit 1; }
  300.  
  301. CMD_FP="/$CONT_NAME_DEST/${CHROOT_CMD}"
  302. if [ ! -e "$CMD_FP" ]; then
  303. CMD_FP_trim="${CMD_FP%-nosb}"
  304. if [ "$CMD_FP_trim" != "$CMD_FP" ] && [ -e "$CMD_FP_trim" ]; then
  305. cat "$CMD_FP_trim" | sed -rn \
  306. '/run-as-spot "\$HERE\/chrome"/ {s#^(.*)$#"$HERE/chrome" --no-sandbox --user-data-dir=$HERE/PROFILE --disable-infobars "$@"#g;}
  307. /run-as-spot "\$HERE\/chrome"/! {p}' > "$CMD_FP"
  308. chmod +x "$CMD_FP"
  309. fi
  310. fi
  311.  
  312. mkdir -p /${CONT_NAME_DEST}/dev
  313. mkdir -p /${CONT_NAME_DEST}/proc
  314. mkdir -p /${CONT_NAME_DEST}/sys
  315. mkdir -p /${CONT_NAME_DEST}/dev/pts
  316.  
  317. mount --bind /dev /${CONT_NAME_DEST}/dev
  318. mount --bind /proc /${CONT_NAME_DEST}/proc
  319. mount --bind /sys /${CONT_NAME_DEST}/sys
  320. mount -t devpts devpts /${CONT_NAME_DEST}/dev/pts
  321. cp /etc/resolv.conf /${CONT_NAME_DEST}/etc/resolv.conf
  322. cp /var/lib/dbus/machine-id /${CONT_NAME_DEST}/var/lib/dbus/machine-id
  323. [ -f .Xauthority ] && cp /root/.Xauthority /${CONT_NAME_DEST}/root/.Xauthority
  324. xhost +
  325. mkdir -p /${CONT_NAME_DEST}/tmp/.X11-unix
  326. mount --rbind /tmp/.X11-unix /${CONT_NAME_DEST}/tmp/.X11-unix
  327. cd /${CONT_NAME_DEST}
  328. #set +x
  329.  
  330. if [ -z ${USE_UNSHARE+x} ]; then
  331. if [ -e /proc/1/ns/pid ] && [ -e /proc/1/ns/mnt ] && type unshare >/dev/null #&& [ -z $NO_NS ];
  332. then
  333. USE_UNSHARE=yes
  334. else
  335. USE_UNSHARE=no
  336. fi
  337. fi
  338. if [ "$USE_UNSHARE" = yes ]; then
  339. CHROOT_UTIL=( unshare -f -C -u -p --mount-proc="/${CONT_NAME_DEST}/proc" chroot )
  340. else
  341. CHROOT_UTIL=(chroot)
  342. fi
  343.  
  344. if [ ! -z "${EXECUTE}" ]; then
  345. cd /"$CONT_NAME_DEST"
  346. set +x
  347. echo "next cmd: \"${EXECUTE[@]}\" \"$@\""
  348. read -p "Ready to EXECUTE Press enter to continue"
  349. set -x
  350. #set +x
  351. "${EXECUTE[@]}" "$@"
  352.  
  353. elif [ ! -z "${CHROOT_CMD}" ]; then
  354. set +x
  355. echo "next cmd: chroot /${CONT_NAME_DEST} \"${CHROOT_CMD[@]}\" \"$@\""
  356. read -p "Ready to chroot Press enter to continue"
  357. set -x
  358. if [ -z "$XephyrDISPLAY" ]; then
  359. #Can't XFORWARD over ssh from puppy4 to newer puppies, but can use Xephyr as a workaround.
  360. LD_LIBRARY_PATH="/lib:/usr/lib:/usr/X11R7/lib:/root/my-applications/lib:/opt/qt4/lib" ${CHROOT_UTIL[@]} /${CONT_NAME_DEST} "${CHROOT_CMD[@]}" "$@"
  361. else
  362. cd "$CWD"
  363. source init_scripts.sh
  364. if [ "$(ls -1 /tmp/.X11-unix | tr 'X' ':')" != "$XephyrDISPLAY" ]; then
  365. XP="-fullscreen -title container -name Xephyr2 -dpi 144 -nolisten tcp"
  366. Xephyr $XephyrDISPLAY ${XP} &
  367. fi
  368.  
  369. LD_LIBRARY_PATH="/lib:/usr/lib:/usr/X11R7/lib:/root/my-applications/lib:/opt/qt4/lib" DISPLAY=$XephyrDISPLAY ${CHROOT_UTIL[@]} /${CONT_NAME_DEST} "${CHROOT_CMD[@]}" "$@"
  370. fi
  371. else
  372. LD_LIBRARY_PATH="/lib:/usr/lib:/usr/X11R7/lib:/root/my-applications/lib:/opt/qt4/lib" chroot /${CONT_NAME_DEST} /bin/sh "$@"
  373. fi
  374. set -x
  375. if [ ! NO_EXIT = true ]; then
  376. umountall
  377. fi
  378.  
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