1#!/bin/sh 2# 3# 4 5# PROVIDE: jail 6# REQUIRE: LOGIN FILESYSTEMS 7# BEFORE: securelevel 8# KEYWORD: shutdown 9 10. /etc/rc.subr 11 12name="jail" 13desc="Manage system jails" 14rcvar="jail_enable" 15 16start_cmd="jail_start" 17start_postcmd="jail_warn" 18stop_cmd="jail_stop" 19config_cmd="jail_config" 20console_cmd="jail_console" 21status_cmd="jail_status" 22extra_commands="config console status" 23: ${jail_program:=/usr/sbin/jail} 24: ${jail_consolecmd:=/usr/bin/login -f root} 25: ${jail_jexec:=/usr/sbin/jexec} 26: ${jail_jls:=/usr/sbin/jls} 27 28need_dad_wait= 29 30# extract_var jv name param num defval 31# Extract value from ${jail_$jv_$name} or ${jail_$name} and 32# set it to $param. If not defined, $defval is used. 33# When $num is [0-9]*, ${jail_$jv_$name$num} are looked up and 34# $param is set by using +=. $num=0 is optional (params may start at 1). 35# When $num is YN or NY, the value is interpreted as boolean. 36# When $num is @, the value is interpreted as an array separted by IFS. 37extract_var() 38{ 39 local i _jv _name _param _num _def _name1 _name2 40 _jv=$1 41 _name=$2 42 _param=$3 43 _num=$4 44 _def=$5 45 46 case $_num in 47 YN) 48 _name1=jail_${_jv}_${_name} 49 _name2=jail_${_name} 50 eval $_name1=\"\${$_name1:-\${$_name2:-$_def}}\" 51 if checkyesno $_name1; then 52 echo " $_param = 1;" 53 else 54 echo " $_param = 0;" 55 fi 56 ;; 57 NY) 58 _name1=jail_${_jv}_${_name} 59 _name2=jail_${_name} 60 eval $_name1=\"\${$_name1:-\${$_name2:-$_def}}\" 61 if checkyesno $_name1; then 62 echo " $_param = 0;" 63 else 64 echo " $_param = 1;" 65 fi 66 ;; 67 [0-9]*) 68 i=$_num 69 while : ; do 70 _name1=jail_${_jv}_${_name}${i} 71 _name2=jail_${_name}${i} 72 eval _tmpargs=\"\${$_name1:-\${$_name2:-$_def}}\" 73 if [ -n "$_tmpargs" ]; then 74 echo " $_param += \"$_tmpargs\";" 75 elif [ $i != 0 ]; then 76 break; 77 fi 78 i=$(($i + 1)) 79 done 80 ;; 81 @) 82 _name1=jail_${_jv}_${_name} 83 _name2=jail_${_name} 84 eval _tmpargs=\"\${$_name1:-\${$_name2:-$_def}}\" 85 set -- $_tmpargs 86 if [ $# -gt 0 ]; then 87 echo -n " $_param = " 88 while [ $# -gt 1 ]; do 89 echo -n "\"$1\", " 90 shift 91 done 92 echo "\"$1\";" 93 fi 94 ;; 95 *) 96 _name1=jail_${_jv}_${_name} 97 _name2=jail_${_name} 98 eval _tmpargs=\"\${$_name1:-\${$_name2:-$_def}}\" 99 if [ -n "$_tmpargs" ]; then 100 echo " $_param = \"$_tmpargs\";" 101 fi 102 ;; 103 esac 104} 105 106# parse_options _j _jv 107# Parse options and create a temporary configuration file if necessary. 108# 109parse_options() 110{ 111 local _j _jv _p 112 _j=$1 113 _jv=$2 114 115 _confwarn=0 116 if [ -z "$_j" ]; then 117 warn "parse_options: you must specify a jail" 118 return 119 fi 120 eval _jconf=\"\${jail_${_jv}_conf:-/etc/jail.${_j}.conf}\" 121 eval _rootdir=\"\$jail_${_jv}_rootdir\" 122 eval _jconfdir=\"/etc/jail.conf.d/${_j}.conf\" 123 eval _hostname=\"\$jail_${_jv}_hostname\" 124 if [ -z "$_rootdir" -o \ 125 -z "$_hostname" ]; then 126 if [ -r "$_jconf" ]; then 127 _conf="$_jconf" 128 return 0 129 elif [ -r "$_jconfdir" ] && ! egrep -q \ 130 '^\s*\.include\s*["'\'']?/etc/jail.conf.d/' "$jail_conf" \ 131 2>/dev/null; then 132 _conf="$_jconfdir" 133 return 0 134 elif [ -r "$jail_conf" ]; then 135 _conf="$jail_conf" 136 return 0 137 else 138 warn "Invalid configuration for $_j " \ 139 "(no jail.conf, no hostname, or no path). " \ 140 "Jail $_j was ignored." 141 fi 142 return 1 143 fi 144 eval _ip=\"\$jail_${_jv}_ip\" 145 if [ -z "$_ip" ] && ! check_kern_features vimage; then 146 warn "no ipaddress specified and no vimage support. " \ 147 "Jail $_j was ignored." 148 return 1 149 fi 150 _conf=/var/run/jail.${_j}.conf 151 # 152 # To relieve confusion, show a warning message. 153 # 154 : ${jail_confwarn:=YES} 155 checkyesno jail_confwarn && _confwarn=1 156 if [ -r "$jail_conf" -o -r "$_jconf" ]; then 157 if ! checkyesno jail_parallel_start; then 158 warn "$_conf is created and used for jail $_j." 159 fi 160 fi 161 /usr/bin/install -m 0644 -o root -g wheel /dev/null $_conf || return 1 162 163 eval : \${jail_${_jv}_flags:=${jail_flags}} 164 eval _exec=\"\$jail_${_jv}_exec\" 165 eval _exec_start=\"\$jail_${_jv}_exec_start\" 166 eval _exec_stop=\"\$jail_${_jv}_exec_stop\" 167 if [ -n "${_exec}" ]; then 168 # simple/backward-compatible execution 169 _exec_start="${_exec}" 170 _exec_stop="" 171 else 172 # flexible execution 173 if [ -z "${_exec_start}" ]; then 174 _exec_start="/bin/sh /etc/rc" 175 if [ -z "${_exec_stop}" ]; then 176 _exec_stop="/bin/sh /etc/rc.shutdown jail" 177 fi 178 fi 179 fi 180 eval _interface=\"\${jail_${_jv}_interface:-${jail_interface}}\" 181 eval _parameters=\"\${jail_${_jv}_parameters:-${jail_parameters}}\" 182 eval _fstab=\"\${jail_${_jv}_fstab:-${jail_fstab:-/etc/fstab.$_j}}\" 183 ( 184 date +"# Generated by rc.d/jail at %Y-%m-%d %H:%M:%S" 185 echo "$_j {" 186 extract_var $_jv hostname host.hostname - "" 187 extract_var $_jv rootdir path - "" 188 if [ -n "$_ip" ]; then 189 extract_var $_jv interface interface - "" 190 jail_handle_ips_option $_ip $_interface 191 alias=0 192 while : ; do 193 eval _x=\"\$jail_${_jv}_ip_multi${alias}\" 194 [ -z "$_x" ] && break 195 196 jail_handle_ips_option $_x $_interface 197 alias=$(($alias + 1)) 198 done 199 case $need_dad_wait in 200 1) 201 # Sleep to let DAD complete before 202 # starting services. 203 echo " exec.start += \"sleep " \ 204 $(($(${SYSCTL_N} net.inet6.ip6.dad_count) + 1)) \ 205 "\";" 206 ;; 207 esac 208 # These are applicable only to non-vimage jails. 209 extract_var $_jv fib exec.fib - "" 210 extract_var $_jv socket_unixiproute_only \ 211 allow.raw_sockets NY YES 212 else 213 echo " vnet;" 214 extract_var $_jv vnet_interface vnet.interface @ "" 215 fi 216 217 echo " exec.clean;" 218 echo " exec.system_user = \"root\";" 219 echo " exec.jail_user = \"root\";" 220 extract_var $_jv exec_prestart exec.prestart 0 "" 221 extract_var $_jv exec_poststart exec.poststart 0 "" 222 extract_var $_jv exec_prestop exec.prestop 0 "" 223 extract_var $_jv exec_poststop exec.poststop 0 "" 224 225 echo " exec.start += \"$_exec_start\";" 226 extract_var $_jv exec_afterstart exec.start 0 "" 227 echo " exec.stop = \"$_exec_stop\";" 228 229 extract_var $_jv consolelog exec.consolelog - \ 230 /var/log/jail_${_j}_console.log 231 232 if [ -r $_fstab ]; then 233 echo " mount.fstab = \"$_fstab\";" 234 fi 235 236 eval : \${jail_${_jv}_devfs_enable:=${jail_devfs_enable:-NO}} 237 if checkyesno jail_${_jv}_devfs_enable; then 238 echo " mount.devfs;" 239 eval _ruleset=\${jail_${_jv}_devfs_ruleset:-${jail_devfs_ruleset}} 240 case $_ruleset in 241 "") ;; 242 [0-9]*) echo " devfs_ruleset = \"$_ruleset\";" ;; 243 devfsrules_jail) 244 # XXX: This is the default value, 245 # Let jail(8) to use the default because 246 # mount(8) only accepts an integer. 247 # This should accept a ruleset name. 248 ;; 249 *) warn "devfs_ruleset must be an integer." ;; 250 esac 251 fi 252 eval : \${jail_${_jv}_fdescfs_enable:=${jail_fdescfs_enable:-NO}} 253 if checkyesno jail_${_jv}_fdescfs_enable; then 254 echo " mount.fdescfs;" 255 fi 256 eval : \${jail_${_jv}_procfs_enable:=${jail_procfs_enable:-NO}} 257 if checkyesno jail_${_jv}_procfs_enable; then 258 echo " mount.procfs;" 259 fi 260 261 eval : \${jail_${_jv}_mount_enable:=${jail_mount_enable:-NO}} 262 if checkyesno jail_${_jv}_mount_enable; then 263 echo " allow.mount;" 264 fi 265 266 extract_var $_jv set_hostname_allow allow.set_hostname YN NO 267 extract_var $_jv sysvipc_allow allow.sysvipc YN NO 268 extract_var $_jv enforce_statfs enforce_statfs - 2 269 extract_var $_jv osreldate osreldate 270 extract_var $_jv osrelease osrelease 271 for _p in $_parameters; do 272 echo " ${_p%\;};" 273 done 274 echo "}" 275 ) >> $_conf 276 277 return 0 278} 279 280# jail_extract_address argument iface 281# The second argument is the string from one of the _ip 282# or the _multi variables. In case of a comma separated list 283# only one argument must be passed in at a time. 284# The function alters the _type, _iface, _addr and _mask variables. 285# 286jail_extract_address() 287{ 288 local _i _interface 289 _i=$1 290 _interface=$2 291 292 if [ -z "${_i}" ]; then 293 warn "jail_extract_address: called without input" 294 return 295 fi 296 297 # Check if we have an interface prefix given and split into 298 # iFace and rest. 299 case "${_i}" in 300 *\|*) # ifN|.. prefix there 301 _iface=${_i%%|*} 302 _r=${_i##*|} 303 ;; 304 *) _iface="" 305 _r=${_i} 306 ;; 307 esac 308 309 # In case the IP has no interface given, check if we have a global one. 310 _iface=${_iface:-${_interface}} 311 312 # Set address, cut off any prefix/netmask/prefixlen. 313 _addr=${_r} 314 _addr=${_addr%%[/ ]*} 315 316 # Theoretically we can return here if interface is not set, 317 # as we only care about the _mask if we call ifconfig. 318 # This is not done because we may want to santize IP addresses 319 # based on _type later, and optionally change the type as well. 320 321 # Extract the prefix/netmask/prefixlen part by cutting off the address. 322 _mask=${_r} 323 _mask=`expr -- "${_mask}" : "${_addr}\(.*\)"` 324 325 # Identify type {inet,inet6}. 326 case "${_addr}" in 327 *\.*\.*\.*) _type="inet" ;; 328 *:*) _type="inet6" ;; 329 *) warn "jail_extract_address: type not identified" 330 ;; 331 esac 332 333 # Handle the special /netmask instead of /prefix or 334 # "netmask xxx" case for legacy IP. 335 # We do NOT support shortend class-full netmasks. 336 if [ "${_type}" = "inet" ]; then 337 case "${_mask}" in 338 /*\.*\.*\.*) _mask=" netmask ${_mask#/}" ;; 339 *) ;; 340 esac 341 342 # In case _mask is still not set use /32. 343 _mask=${_mask:-/32} 344 345 elif [ "${_type}" = "inet6" ]; then 346 # In case _mask is not set for IPv6, use /128. 347 _mask=${_mask:-/128} 348 fi 349} 350 351# jail_handle_ips_option input iface 352# Handle a single argument imput which can be a comma separated 353# list of addresses (theoretically with an option interface and 354# prefix/netmask/prefixlen). 355# 356jail_handle_ips_option() 357{ 358 local _x _type _i _defif 359 _x=$1 360 _defif=$2 361 362 if [ -z "${_x}" ]; then 363 # No IP given. This can happen for the primary address 364 # of each address family. 365 return 366 fi 367 368 # Loop, in case we find a comma separated list, we need to handle 369 # each argument on its own. 370 while [ ${#_x} -gt 0 ]; do 371 case "${_x}" in 372 *,*) # Extract the first argument and strip it off the list. 373 _i=`expr -- "${_x}" : '^\([^,]*\)'` 374 _x=`expr -- "${_x}" : "^[^,]*,\(.*\)"` 375 ;; 376 *) _i=${_x} 377 _x="" 378 ;; 379 esac 380 381 _type="" 382 _addr="" 383 _mask="" 384 _iface="" 385 jail_extract_address $_i $_defif 386 387 # make sure we got an address. 388 case $_addr in 389 "") continue ;; 390 *) ;; 391 esac 392 393 # Append address to list of addresses for the jail command. 394 case $_type in 395 inet) 396 echo " ip4.addr += \"${_iface:+${_iface}|}${_addr}${_mask}\";" 397 ;; 398 inet6) 399 echo " ip6.addr += \"${_iface:+${_iface}|}${_addr}${_mask}\";" 400 need_dad_wait=1 401 ;; 402 esac 403 done 404} 405 406jail_config() 407{ 408 local _j _jv 409 410 case $1 in 411 _ALL) return ;; 412 esac 413 for _j in $@; do 414 _j=$(echo $_j | tr /. _) 415 _jv=$(echo -n $_j | tr -c '[:alnum:]' _) 416 if parse_options $_j $_jv; then 417 echo "$_j: parameters are in $_conf." 418 fi 419 done 420} 421 422jail_console() 423{ 424 local _j _jv _cmd 425 426 # One argument that is not _ALL. 427 case $#:$1 in 428 0:*|1:_ALL) err 3 "Specify a jail name." ;; 429 1:*) ;; 430 esac 431 _j=$(echo $1 | tr /. _) 432 _jv=$(echo -n $1 | tr -c '[:alnum:]' _) 433 shift 434 case $# in 435 0) eval _cmd=\${jail_${_jv}_consolecmd:-$jail_consolecmd} ;; 436 *) _cmd=$@ ;; 437 esac 438 $jail_jexec $_j $_cmd 439} 440 441jail_status() 442{ 443 444 $jail_jls -N 445} 446 447jail_start() 448{ 449 local _j _jv _jid _id _name 450 451 if [ $# = 0 ]; then 452 return 453 fi 454 startmsg -n 'Starting jails:' 455 case $1 in 456 _ALL) 457 command=$jail_program 458 rc_flags=$jail_flags 459 command_args="-f $jail_conf -c" 460 if ! checkyesno jail_parallel_start; then 461 command_args="$command_args -p1" 462 fi 463 _tmp=`mktemp -t jail` || exit 3 464 if $command $rc_flags $command_args >> $_tmp 2>&1; then 465 $jail_jls jid name | while read _id _name; do 466 startmsg -n " $_name" 467 echo $_id > /var/run/jail_${_name}.id 468 done 469 else 470 cat $_tmp 471 fi 472 rm -f $_tmp 473 startmsg '.' 474 return 475 ;; 476 esac 477 if checkyesno jail_parallel_start; then 478 # 479 # Start jails in parallel and then check jail id when 480 # jail_parallel_start is YES. 481 # 482 for _j in $@; do 483 _j=$(echo $_j | tr /. _) 484 _jv=$(echo -n $_j | tr -c '[:alnum:]' _) 485 parse_options $_j $_jv || continue 486 487 eval rc_flags=\${jail_${_jv}_flags:-$jail_flags} 488 eval command=\${jail_${_jv}_program:-$jail_program} 489 command_args="-i -f $_conf -c $_j" 490 ( 491 _tmp=`mktemp -t jail_${_j}` || exit 3 492 if $command $rc_flags $command_args \ 493 >> $_tmp 2>&1 </dev/null; then 494 startmsg -n " ${_hostname:-${_j}}" 495 _jid=$($jail_jls -j $_j jid) 496 echo $_jid > /var/run/jail_${_j}.id 497 else 498 startmsg " cannot start jail " \ 499 "\"${_hostname:-${_j}}\": " 500 cat $_tmp 501 fi 502 rm -f $_tmp 503 ) & 504 done 505 wait 506 else 507 # 508 # Start jails one-by-one when jail_parallel_start is NO. 509 # 510 for _j in $@; do 511 _j=$(echo $_j | tr /. _) 512 _jv=$(echo -n $_j | tr -c '[:alnum:]' _) 513 parse_options $_j $_jv || continue 514 515 eval rc_flags=\${jail_${_jv}_flags:-$jail_flags} 516 eval command=\${jail_${_jv}_program:-$jail_program} 517 command_args="-i -f $_conf -c $_j" 518 _tmp=`mktemp -t jail` || exit 3 519 if $command $rc_flags $command_args \ 520 >> $_tmp 2>&1 </dev/null; then 521 startmsg -n " ${_hostname:-${_j}}" 522 _jid=$($jail_jls -j $_j jid) 523 echo $_jid > /var/run/jail_${_j}.id 524 else 525 startmsg " cannot start jail " \ 526 "\"${_hostname:-${_j}}\": " 527 cat $_tmp 528 fi 529 rm -f $_tmp 530 done 531 fi 532 startmsg '.' 533} 534 535jail_stop() 536{ 537 local _j _jv 538 539 if [ $# = 0 ]; then 540 return 541 fi 542 echo -n 'Stopping jails:' 543 case $1 in 544 _ALL) 545 command=$jail_program 546 rc_flags=$jail_flags 547 command_args="-f $jail_conf -r" 548 if checkyesno jail_reverse_stop; then 549 $jail_jls name | tail -r 550 else 551 $jail_jls name 552 fi | while read _j; do 553 echo -n " $_j" 554 _tmp=`mktemp -t jail` || exit 3 555 $command $rc_flags $command_args $_j >> $_tmp 2>&1 556 if $jail_jls -j $_j > /dev/null 2>&1; then 557 cat $_tmp 558 else 559 rm -f /var/run/jail_${_j}.id 560 fi 561 rm -f $_tmp 562 done 563 echo '.' 564 return 565 ;; 566 esac 567 checkyesno jail_reverse_stop && set -- $(reverse_list $@) 568 for _j in $@; do 569 _j=$(echo $_j | tr /. _) 570 _jv=$(echo -n $_j | tr -c '[:alnum:]' _) 571 parse_options $_j $_jv || continue 572 if ! $jail_jls -j $_j > /dev/null 2>&1; then 573 continue 574 fi 575 eval command=\${jail_${_jv}_program:-$jail_program} 576 echo -n " ${_hostname:-${_j}}" 577 _tmp=`mktemp -t jail` || exit 3 578 $command -q -f $_conf -r $_j >> $_tmp 2>&1 579 if $jail_jls -j $_j > /dev/null 2>&1; then 580 cat $_tmp 581 else 582 rm -f /var/run/jail_${_j}.id 583 fi 584 rm -f $_tmp 585 done 586 echo '.' 587} 588 589jail_warn() 590{ 591 592 # To relieve confusion, show a warning message. 593 case $_confwarn in 594 1) warn "Per-jail configuration via jail_* variables " \ 595 "is obsolete. Please consider migrating to $jail_conf." 596 ;; 597 esac 598} 599 600load_rc_config $name 601case $# in 6021) run_rc_command $@ ${jail_list:-_ALL} ;; 603*) jail_reverse_stop="no" 604 run_rc_command $@ ;; 605esac 606