1207151Smarius#!/bin/sh 2207151Smarius# 3207151Smarius# $FreeBSD: releng/10.2/etc/rc.d/jail 278484 2015-02-10 01:05:51Z jamie $ 4207151Smarius# 5207151Smarius 6207151Smarius# PROVIDE: jail 7207151Smarius# REQUIRE: LOGIN FILESYSTEMS 8207151Smarius# BEFORE: securelevel 9207151Smarius# KEYWORD: nojail shutdown 10207151Smarius 11207151Smarius. /etc/rc.subr 12207151Smarius 13207151Smariusname="jail" 14207151Smariusrcvar="jail_enable" 15207151Smarius 16207151Smariusstart_cmd="jail_start" 17207151Smariusstart_postcmd="jail_warn" 18207151Smariusstop_cmd="jail_stop" 19207151Smariusconfig_cmd="jail_config" 20207151Smariusconsole_cmd="jail_console" 21207151Smariusstatus_cmd="jail_status" 22207151Smariusextra_commands="config console status" 23207151Smarius: ${jail_conf:=/etc/jail.conf} 24207151Smarius: ${jail_program:=/usr/sbin/jail} 25207151Smarius: ${jail_consolecmd:=/usr/bin/login -f root} 26207151Smarius: ${jail_jexec:=/usr/sbin/jexec} 27207151Smarius: ${jail_jls:=/usr/sbin/jls} 28207151Smarius 29207151Smariusneed_dad_wait= 30207151Smarius 31207151Smarius# extract_var jail name param num defval 32207151Smarius# Extract value from ${jail_$jail_$name} or ${jail_$name} and 33207151Smarius# set it to $param. If not defined, $defval is used. 34207151Smarius# When $num is [0-9]*, ${jail_$jail_$name$num} are looked up and 35207151Smarius# $param is set by using +=. 36207151Smarius# When $num is YN or NY, the value is interpret as boolean. 37207151Smariusextract_var() 38207151Smarius{ 39207151Smarius local i _j _name _param _num _def _name1 _name2 40207151Smarius _j=$1 41207151Smarius _name=$2 42207151Smarius _param=$3 43207151Smarius _num=$4 44207151Smarius _def=$5 45207151Smarius 46207151Smarius case $_num in 47207151Smarius YN) 48207151Smarius _name1=jail_${_j}_${_name} 49207151Smarius _name2=jail_${_name} 50207151Smarius eval $_name1=\"\${$_name1:-\${$_name2:-$_def}}\" 51207151Smarius if checkyesno $_name1; then 52207151Smarius echo " $_param = 1;" 53207151Smarius else 54207151Smarius echo " $_param = 0;" 55207151Smarius fi 56207151Smarius ;; 57207151Smarius NY) 58207151Smarius _name1=jail_${_j}_${_name} 59207151Smarius _name2=jail_${_name} 60207151Smarius eval $_name1=\"\${$_name1:-\${$_name2:-$_def}}\" 61207151Smarius if checkyesno $_name1; then 62207151Smarius echo " $_param = 0;" 63207151Smarius else 64207151Smarius echo " $_param = 1;" 65207151Smarius fi 66207151Smarius ;; 67207151Smarius [0-9]*) 68207151Smarius i=$_num 69207151Smarius while : ; do 70207151Smarius _name1=jail_${_j}_${_name}${i} 71207151Smarius _name2=jail_${_name}${i} 72207151Smarius eval _tmpargs=\"\${$_name1:-\${$_name2:-$_def}}\" 73207151Smarius if [ -n "$_tmpargs" ]; then 74207151Smarius echo " $_param += \"$_tmpargs\";" 75207151Smarius else 76207151Smarius break; 77207151Smarius fi 78207151Smarius i=$(($i + 1)) 79207151Smarius done 80207151Smarius ;; 81207151Smarius *) 82207151Smarius _name1=jail_${_j}_${_name} 83207151Smarius _name2=jail_${_name} 84207151Smarius eval _tmpargs=\"\${$_name1:-\${$_name2:-$_def}}\" 85207151Smarius if [ -n "$_tmpargs" ]; then 86207151Smarius echo " $_param = \"$_tmpargs\";" 87207151Smarius fi 88207151Smarius ;; 89207151Smarius esac 90207151Smarius} 91207151Smarius 92207151Smarius# parse_options _j 93207151Smarius# Parse options and create a temporary configuration file if necessary. 94207151Smarius# 95207151Smariusparse_options() 96207151Smarius{ 97207151Smarius local _j _p 98207151Smarius _j=$1 99207151Smarius 100207151Smarius _confwarn=0 101207151Smarius if [ -z "$_j" ]; then 102207151Smarius warn "parse_options: you must specify a jail" 103207151Smarius return 104207151Smarius fi 105207151Smarius eval _jconf=\"\${jail_${_j}_conf:-/etc/jail.${_j}.conf}\" 106207151Smarius eval _rootdir=\"\$jail_${_j}_rootdir\" 107207151Smarius eval _hostname=\"\$jail_${_j}_hostname\" 108207151Smarius if [ -z "$_rootdir" -o \ 109207151Smarius -z "$_hostname" ]; then 110207151Smarius if [ -r "$_jconf" ]; then 111207151Smarius _conf="$_jconf" 112207151Smarius return 0 113207151Smarius elif [ -r "$jail_conf" ]; then 114207151Smarius _conf="$jail_conf" 115207151Smarius return 0 116207151Smarius else 117207151Smarius warn "Invalid configuration for $_j " \ 118207151Smarius "(no jail.conf, no hostname, or no path). " \ 119207151Smarius "Jail $_j was ignored." 120207151Smarius fi 121207151Smarius return 1 122207151Smarius fi 123207151Smarius eval _ip=\"\$jail_${_j}_ip\" 124207151Smarius if [ -z "$_ip" ] && ! check_kern_features vimage; then 125207151Smarius warn "no ipaddress specified and no vimage support. " \ 126207151Smarius "Jail $_j was ignored." 127207151Smarius return 1 128207151Smarius fi 129207151Smarius _conf=/var/run/jail.${_j}.conf 130207151Smarius # 131207151Smarius # To relieve confusion, show a warning message. 132207151Smarius # 133207151Smarius _confwarn=1 134207151Smarius if [ -r "$jail_conf" -o -r "$_jconf" ]; then 135207151Smarius if ! checkyesno jail_parallel_start; then 136207151Smarius warn "$_conf is created and used for jail $_j." 137207151Smarius fi 138207151Smarius fi 139207151Smarius /usr/bin/install -m 0644 -o root -g wheel /dev/null $_conf || return 1 140207151Smarius 141207151Smarius eval : \${jail_${_j}_flags:=${jail_flags}} 142207151Smarius eval _exec=\"\$jail_${_j}_exec\" 143207151Smarius eval _exec_start=\"\$jail_${_j}_exec_start\" 144207151Smarius eval _exec_stop=\"\$jail_${_j}_exec_stop\" 145207151Smarius if [ -n "${_exec}" ]; then 146207151Smarius # simple/backward-compatible execution 147207151Smarius _exec_start="${_exec}" 148207151Smarius _exec_stop="" 149207151Smarius else 150207151Smarius # flexible execution 151207151Smarius if [ -z "${_exec_start}" ]; then 152207151Smarius _exec_start="/bin/sh /etc/rc" 153207151Smarius if [ -z "${_exec_stop}" ]; then 154207151Smarius _exec_stop="/bin/sh /etc/rc.shutdown" 155207151Smarius fi 156207151Smarius fi 157207151Smarius fi 158207151Smarius eval _interface=\"\${jail_${_j}_interface:-${jail_interface}}\" 159207151Smarius eval _parameters=\"\${jail_${_j}_parameters:-${jail_parameters}}\" 160207151Smarius eval _fstab=\"\${jail_${_j}_fstab:-${jail_fstab:-/etc/fstab.$_j}}\" 161207151Smarius ( 162207151Smarius date +"# Generated by rc.d/jail at %Y-%m-%d %H:%M:%S" 163207151Smarius echo "$_j {" 164207151Smarius extract_var $_j hostname host.hostname - "" 165207151Smarius extract_var $_j rootdir path - "" 166207151Smarius if [ -n "$_ip" ]; then 167207151Smarius extract_var $_j interface interface - "" 168207151Smarius jail_handle_ips_option $_ip $_interface 169207151Smarius alias=0 170207151Smarius while : ; do 171207151Smarius eval _x=\"\$jail_${_j}_ip_multi${alias}\" 172207151Smarius [ -z "$_x" ] && break 173207151Smarius 174207151Smarius jail_handle_ips_option $_x $_interface 175207151Smarius alias=$(($alias + 1)) 176207151Smarius done 177207151Smarius case $need_dad_wait in 178207151Smarius 1) 179207151Smarius # Sleep to let DAD complete before 180207151Smarius # starting services. 181207151Smarius echo " exec.start += \"sleep " \ 182207151Smarius $(($(${SYSCTL_N} net.inet6.ip6.dad_count) + 1)) \ 183207151Smarius "\";" 184207151Smarius ;; 185207151Smarius esac 186207151Smarius # These are applicable only to non-vimage jails. 187207151Smarius extract_var $_j fib exec.fib - "" 188207151Smarius extract_var $_j socket_unixiproute_only \ 189207151Smarius allow.raw_sockets NY YES 190207151Smarius else 191207151Smarius echo " vnet;" 192207151Smarius extract_var $_j vnet_interface vnet.interface - "" 193207151Smarius fi 194207151Smarius 195207151Smarius echo " exec.clean;" 196207151Smarius echo " exec.system_user = \"root\";" 197207151Smarius echo " exec.jail_user = \"root\";" 198207151Smarius extract_var $_j exec_prestart exec.prestart 0 "" 199207151Smarius extract_var $_j exec_poststart exec.poststart 0 "" 200207151Smarius extract_var $_j exec_prestop exec.prestop 0 "" 201207151Smarius extract_var $_j exec_poststop exec.poststop 0 "" 202207151Smarius 203207151Smarius echo " exec.start += \"$_exec_start\";" 204207151Smarius extract_var $_j exec_afterstart exec.start 1 "" 205207151Smarius echo " exec.stop = \"$_exec_stop\";" 206207151Smarius 207207151Smarius extract_var $_j consolelog exec.consolelog - \ 208207151Smarius /var/log/jail_${_j}_console.log 209207151Smarius 210207151Smarius if [ -r $_fstab ]; then 211207151Smarius echo " mount.fstab = \"$_fstab\";" 212207151Smarius fi 213207151Smarius 214207151Smarius eval : \${jail_${_j}_devfs_enable:=${jail_devfs_enable:-NO}} 215207151Smarius if checkyesno jail_${_j}_devfs_enable; then 216207151Smarius echo " mount.devfs;" 217 eval _ruleset=\${jail_${_j}_devfs_ruleset:-${jail_devfs_ruleset}} 218 case $_ruleset in 219 "") ;; 220 [0-9]*) echo " devfs_ruleset = \"$_ruleset\";" ;; 221 devfsrules_jail) 222 # XXX: This is the default value, 223 # Let jail(8) to use the default because 224 # mount(8) only accepts an integer. 225 # This should accept a ruleset name. 226 ;; 227 *) warn "devfs_ruleset must be an integer." ;; 228 esac 229 fi 230 eval : \${jail_${_j}_fdescfs_enable:=${jail_fdescfs_enable:-NO}} 231 if checkyesno jail_${_j}_fdescfs_enable; then 232 echo " mount.fdescfs;" 233 fi 234 eval : \${jail_${_j}_procfs_enable:=${jail_procfs_enable:-NO}} 235 if checkyesno jail_${_j}_procfs_enable; then 236 echo " mount.procfs;" 237 fi 238 239 eval : \${jail_${_j}_mount_enable:=${jail_mount_enable:-NO}} 240 if checkyesno jail_${_j}_mount_enable; then 241 echo " allow.mount;" >> $_conf 242 fi 243 244 extract_var $_j set_hostname_allow allow.set_hostname YN NO 245 extract_var $_j sysvipc_allow allow.sysvipc YN NO 246 for _p in $_parameters; do 247 echo " ${_p%\;};" 248 done 249 echo "}" 250 ) >> $_conf 251 252 return 0 253} 254 255# jail_extract_address argument iface 256# The second argument is the string from one of the _ip 257# or the _multi variables. In case of a comma separated list 258# only one argument must be passed in at a time. 259# The function alters the _type, _iface, _addr and _mask variables. 260# 261jail_extract_address() 262{ 263 local _i _interface 264 _i=$1 265 _interface=$2 266 267 if [ -z "${_i}" ]; then 268 warn "jail_extract_address: called without input" 269 return 270 fi 271 272 # Check if we have an interface prefix given and split into 273 # iFace and rest. 274 case "${_i}" in 275 *\|*) # ifN|.. prefix there 276 _iface=${_i%%|*} 277 _r=${_i##*|} 278 ;; 279 *) _iface="" 280 _r=${_i} 281 ;; 282 esac 283 284 # In case the IP has no interface given, check if we have a global one. 285 _iface=${_iface:-${_interface}} 286 287 # Set address, cut off any prefix/netmask/prefixlen. 288 _addr=${_r} 289 _addr=${_addr%%[/ ]*} 290 291 # Theoretically we can return here if interface is not set, 292 # as we only care about the _mask if we call ifconfig. 293 # This is not done because we may want to santize IP addresses 294 # based on _type later, and optionally change the type as well. 295 296 # Extract the prefix/netmask/prefixlen part by cutting off the address. 297 _mask=${_r} 298 _mask=`expr "${_mask}" : "${_addr}\(.*\)"` 299 300 # Identify type {inet,inet6}. 301 case "${_addr}" in 302 *\.*\.*\.*) _type="inet" ;; 303 *:*) _type="inet6" ;; 304 *) warn "jail_extract_address: type not identified" 305 ;; 306 esac 307 308 # Handle the special /netmask instead of /prefix or 309 # "netmask xxx" case for legacy IP. 310 # We do NOT support shortend class-full netmasks. 311 if [ "${_type}" = "inet" ]; then 312 case "${_mask}" in 313 /*\.*\.*\.*) _mask=" netmask ${_mask#/}" ;; 314 *) ;; 315 esac 316 317 # In case _mask is still not set use /32. 318 _mask=${_mask:-/32} 319 320 elif [ "${_type}" = "inet6" ]; then 321 # In case _mask is not set for IPv6, use /128. 322 _mask=${_mask:-/128} 323 fi 324} 325 326# jail_handle_ips_option input iface 327# Handle a single argument imput which can be a comma separated 328# list of addresses (theoretically with an option interface and 329# prefix/netmask/prefixlen). 330# 331jail_handle_ips_option() 332{ 333 local _x _type _i _defif 334 _x=$1 335 _defif=$2 336 337 if [ -z "${_x}" ]; then 338 # No IP given. This can happen for the primary address 339 # of each address family. 340 return 341 fi 342 343 # Loop, in case we find a comma separated list, we need to handle 344 # each argument on its own. 345 while [ ${#_x} -gt 0 ]; do 346 case "${_x}" in 347 *,*) # Extract the first argument and strip it off the list. 348 _i=`expr "${_x}" : '^\([^,]*\)'` 349 _x=`expr "${_x}" : "^[^,]*,\(.*\)"` 350 ;; 351 *) _i=${_x} 352 _x="" 353 ;; 354 esac 355 356 _type="" 357 _addr="" 358 _mask="" 359 _iface="" 360 jail_extract_address $_i $_defif 361 362 # make sure we got an address. 363 case $_addr in 364 "") continue ;; 365 *) ;; 366 esac 367 368 # Append address to list of addresses for the jail command. 369 case $_type in 370 inet) 371 echo " ip4.addr += \"${_iface:+${_iface}|}${_addr}${_mask}\";" 372 ;; 373 inet6) 374 echo " ip6.addr += \"${_iface:+${_iface}|}${_addr}${_mask}\";" 375 need_dad_wait=1 376 ;; 377 esac 378 done 379} 380 381jail_config() 382{ 383 local _j 384 385 case $1 in 386 _ALL) return ;; 387 esac 388 for _j in $@; do 389 _j=$(echo $_j | tr /. _) 390 if parse_options $_j; then 391 echo "$_j: parameters are in $_conf." 392 fi 393 done 394} 395 396jail_console() 397{ 398 local _j _cmd 399 400 # One argument that is not _ALL. 401 case $#:$1 in 402 0:*|1:_ALL) err 3 "Specify a jail name." ;; 403 1:*) ;; 404 esac 405 _j=$(echo $1 | tr /. _) 406 shift 407 case $# in 408 0) eval _cmd=\${jail_${_j}_consolecmd:-$jail_consolecmd} ;; 409 *) _cmd=$@ ;; 410 esac 411 $jail_jexec $_j $_cmd 412} 413 414jail_status() 415{ 416 417 $jail_jls -N 418} 419 420jail_start() 421{ 422 local _j _jid _jl 423 424 if [ $# = 0 ]; then 425 return 426 fi 427 echo -n 'Starting jails:' 428 case $1 in 429 _ALL) 430 command=$jail_program 431 rc_flags=$jail_flags 432 command_args="-f $jail_conf -c" 433 _tmp=`mktemp -t jail` || exit 3 434 if $command $rc_flags $command_args >> $_tmp 2>&1; then 435 $jail_jls jid name | while read IN; do 436 set -- $IN 437 echo -n " $2" 438 echo $1 > /var/run/jail_$2.id 439 done 440 else 441 tail -1 $_tmp 442 fi 443 rm -f $_tmp 444 echo '.' 445 return 446 ;; 447 esac 448 if checkyesno jail_parallel_start; then 449 # 450 # Start jails in parallel and then check jail id when 451 # jail_parallel_start is YES. 452 # 453 _jl= 454 for _j in $@; do 455 _j=$(echo $_j | tr /. _) 456 parse_options $_j || continue 457 458 _jl="$_jl $_j" 459 eval rc_flags=\${jail_${_j}_flags:-$jail_flags} 460 eval command=\${jail_${_j}_program:-$jail_program} 461 command_args="-i -f $_conf -c $_j" 462 $command $rc_flags $command_args \ 463 >/dev/null 2>&1 </dev/null & 464 done 465 sleep 1 466 for _j in $_jl; do 467 echo -n " ${_hostname:-${_j}}" 468 if _jid=$($jail_jls -j $_j jid); then 469 echo "$_jid" > /var/run/jail_${_j}.id 470 else 471 rm -f /var/run/jail_${_j}.id 472 echo " cannot start jail " \ 473 "\"${_hostname:-${_j}}\": " 474 fi 475 done 476 else 477 # 478 # Start jails one-by-one when jail_parallel_start is NO. 479 # 480 for _j in $@; do 481 _j=$(echo $_j | tr /. _) 482 parse_options $_j || continue 483 484 eval rc_flags=\${jail_${_j}_flags:-$jail_flags} 485 eval command=\${jail_${_j}_program:-$jail_program} 486 command_args="-i -f $_conf -c $_j" 487 _tmp=`mktemp -t jail` || exit 3 488 if $command $rc_flags $command_args \ 489 >> $_tmp 2>&1 </dev/null; then 490 echo -n " ${_hostname:-${_j}}" 491 _jid=$($jail_jls -j $_j jid) 492 echo $_jid > /var/run/jail_${_j}.id 493 else 494 rm -f /var/run/jail_${_j}.id 495 echo " cannot start jail " \ 496 "\"${_hostname:-${_j}}\": " 497 cat $_tmp 498 fi 499 rm -f $_tmp 500 done 501 fi 502 echo '.' 503} 504 505jail_stop() 506{ 507 local _j 508 509 if [ $# = 0 ]; then 510 return 511 fi 512 echo -n 'Stopping jails:' 513 case $1 in 514 _ALL) 515 command=$jail_program 516 rc_flags=$jail_flags 517 command_args="-f $jail_conf -r" 518 $jail_jls name | while read _j; do 519 echo -n " $_j" 520 _tmp=`mktemp -t jail` || exit 3 521 $command $rc_flags $command_args $_j >> $_tmp 2>&1 522 if $jail_jls -j $_j > /dev/null 2>&1; then 523 tail -1 $_tmp 524 else 525 rm -f /var/run/jail_${_j}.id 526 fi 527 rm -f $_tmp 528 done 529 echo '.' 530 return 531 ;; 532 esac 533 for _j in $@; do 534 _j=$(echo $_j | tr /. _) 535 parse_options $_j || continue 536 if ! $jail_jls -j $_j > /dev/null 2>&1; then 537 continue 538 fi 539 eval command=\${jail_${_j}_program:-$jail_program} 540 echo -n " ${_hostname:-${_j}}" 541 _tmp=`mktemp -t jail` || exit 3 542 $command -q -f $_conf -r $_j >> $_tmp 2>&1 543 if $jail_jls -j $_j > /dev/null 2>&1; then 544 tail -1 $_tmp 545 else 546 rm -f /var/run/jail_${_j}.id 547 fi 548 rm -f $_tmp 549 done 550 echo '.' 551} 552 553jail_warn() 554{ 555 556 # To relieve confusion, show a warning message. 557 case $_confwarn in 558 1) warn "Per-jail configuration via jail_* variables " \ 559 "is obsolete. Please consider to migrate to $jail_conf." 560 ;; 561 esac 562} 563 564load_rc_config $name 565case $# in 5661) run_rc_command $@ ${jail_list:-_ALL} ;; 567*) run_rc_command $@ ;; 568esac 569