1#!/bin/sh
2#-
3# Copyright (c) 2016 Devin Teske
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10# notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12# notice, this list of conditions and the following disclaimer in the
13# documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
| 1#!/bin/sh
2#-
3# Copyright (c) 2016 Devin Teske
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10# notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12# notice, this list of conditions and the following disclaimer in the
13# documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
|
27# $FreeBSD: head/share/examples/jails/jib 295400 2016-02-08 17:36:46Z dteske $
| 27# $FreeBSD: head/share/examples/jails/jib 295401 2016-02-08 17:47:36Z dteske $
|
28#
29############################################################ IDENT(1)
30#
31# $Title: if_bridge(4) management script for vnet jails $
32#
33############################################################ INFORMATION
34#
35# Use this tool with jail.conf(5) (or rc.conf(5) ``legacy'' configuration) to
36# manage `vnet' interfaces for jails. Designed to automate the creation of vnet
37# interface(s) during jail `prestart' and destroy said interface(s) during jail
38# `poststop'.
39#
40# In jail.conf(5) format:
41#
42# ### BEGIN EXCERPT ###
43#
44# xxx {
45# host.hostname = "xxx.yyy";
46# path = "/vm/xxx";
47#
48# #
49# # NB: Below 2-lines required
50# # NB: The number of eNb_xxx interfaces should match the number of
51# # arguments given to `jib addm xxx' in exec.prestart value.
52# #
53# vnet;
54# vnet.interface = "e0b_xxx e1b_xxx ...";
55#
56# exec.clean;
57# exec.system_user = "root";
58# exec.jail_user = "root";
59#
60# #
61# # NB: Below 2-lines required
62# # NB: The number of arguments after `jib addm xxx' should match
63# # the number of eNb_xxx arguments in vnet.interface value.
64# #
65# exec.prestart += "jib addm xxx em0 em1 ...";
66# exec.poststop += "jib destroy xxx";
67#
68# # Standard recipe
69# exec.start += "/bin/sh /etc/rc";
70# exec.stop = "/bin/sh /etc/rc.shutdown";
71# exec.consolelog = "/var/log/jail_xxx_console.log";
72# mount.devfs;
73#
74# # Optional (default off)
75# #allow.mount;
76# #allow.set_hostname = 1;
77# #allow.sysvipc = 1;
78# #devfs_ruleset = "11"; # rule to unhide bpf for DHCP
79# }
80#
81# ### END EXCERPT ###
82#
83# In rc.conf(5) ``legacy'' format (used when /etc/jail.conf does not exist):
84#
85# ### BEGIN EXCERPT ###
86#
87# jail_enable="YES"
88# jail_list="xxx"
89#
90# #
91# # Global presets for all jails
92# #
93# jail_devfs_enable="YES" # mount devfs
94#
95# #
96# # Global options (default off)
97# #
98# #jail_mount_enable="YES" # mount /etc/fstab.{name}
99# #jail_set_hostname_allow="YES" # Allow hostname to change
100# #jail_sysvipc_allow="YES" # Allow SysV Interprocess Comm.
101#
102# # xxx
103# jail_xxx_hostname="xxx.shxd.cx" # hostname
104# jail_xxx_rootdir="/vm/xxx" # root directory
105# jail_xxx_vnet_interfaces="e0b_xxx e1bxxx ..." # vnet interface(s)
106# jail_xxx_exec_prestart0="jib addm xxx em0 em1 ..." # bridge interface(s)
107# jail_xxx_exec_poststop0="jib destroy xxx" # destroy interface(s)
108# #jail_xxx_mount_enable="YES" # mount /etc/fstab.xxx
109# #jail_xxx_devfs_ruleset="11" # rule to unhide bpf for DHCP
110#
111# ### END EXCERPT ###
112#
113# Note that the legacy rc.conf(5) format is converted to
114# /var/run/jail.{name}.conf by /etc/rc.d/jail if jail.conf(5) is missing.
115#
116# ASIDE: dhclient(8) inside a vnet jail...
117#
118# To allow dhclient(8) to work inside a vnet jail, make sure the following
119# appears in /etc/devfs.rules (which should be created if it doesn't exist):
120#
121# [devfsrules_jail=11]
122# add include $devfsrules_hide_all
123# add include $devfsrules_unhide_basic
124# add include $devfsrules_unhide_login
125# add include $devfsrules_unhide_bpf
126#
127# And set ether devfs.ruleset="11" (jail.conf(5)) or
128# jail_{name}_devfs_ruleset="11" (rc.conf(5)).
129#
130# NB: While this tool can't create every type of desirable topology, it should
131# handle most setups, minus some which considered exotic or purpose-built.
132#
133############################################################ GLOBALS
134
135pgm="${0##*/}" # Program basename
136
137#
138# Global exit status
139#
140SUCCESS=0
141FAILURE=1
142
143############################################################ FUNCTIONS
144
145usage()
146{
147 local action usage descr
148 exec >&2
149 echo "Usage: $pgm action [arguments]"
150 echo "Actions:"
151 for action in \
152 addm \
153 show \
154 show1 \
155 destroy \
156 ; do
157 eval usage=\"\$jib_${action}_usage\"
158 [ "$usage" ] || continue
159 eval descr=\"\$jib_${action}_descr\"
160 printf "\t%s\n\t\t%s\n" "$usage" "$descr"
161 done
162 exit $FAILURE
163}
164
165action_usage()
166{
167 local usage action="$1"
168 eval usage=\"\$jib_${action}_usage\"
169 echo "Usage: $pgm $usage" >&2
170 exit $FAILURE
171}
172
173mustberoot_to_continue()
174{
175 if [ "$( id -u )" -ne 0 ]; then
176 echo "Must run as root!" >&2
177 exit $FAILURE
178 fi
179}
180
181jib_addm_usage="addm [-b BRIDGE_NAME] NAME interface0 [interface1 ...]"
182jib_addm_descr="Creates e0b_NAME [e1b_NAME ...]"
183jib_addm()
184{
185 local OPTIND=1 OPTARG flag bridge=bridge
186 while getopts b: flag; do
187 case "$flag" in
188 b) bridge="${OPTARG:-bridge}" ;;
189 *) action_usage addm # NOTREACHED
190 esac
191 done
192 shift $(( $OPTIND - 1 ))
193
194 local name="$1"
195 [ "${name:-x}" = "${name#*[!0-9a-zA-Z_]}" -a $# -gt 1 ] ||
196 action_usage addm # NOTREACHED
197 shift 1 # name
198
199 mustberoot_to_continue
200
201 local iface iface_devid eiface_devid_a eiface_devid_b
202 local new num quad i=0
203 for iface in $*; do
204
205 # 1. Make sure the interface doesn't exist already
206 ifconfig "e${i}a_$name" > /dev/null 2>&1 && continue
207
208 # 2. Bring the interface up
209 ifconfig $iface up || return
210
211 # 3. Make sure the interface has been bridged
212 if ! ifconfig "$iface$bridge" > /dev/null 2>&1; then
213 new=$( ifconfig bridge create ) || return
214 ifconfig $new addm $iface || return
215 ifconfig $new name "$iface$bridge" || return
216 fi
217
218 # 4. Create a new interface to the bridge
219 new=$( ifconfig epair create ) || return
220 ifconfig "$iface$bridge" addm $new || return
221
222 # 5. Rename the new interface
223 ifconfig $new name "e${i}a_$name" || return
224 ifconfig ${new%a}b name "e${i}b_$name" || return
225
226 #
227 # 6. Set the MAC address of the new interface using a sensible
228 # algorithm to prevent conflicts on the network.
229 #
230 # The formula I'm using is ``SP:SS:SI:II:II:II'' where:
231 # + S denotes 16 bits of sum(1) data, split because P (below).
232 # + P denotes the special nibble whose value, if one of
233 # 2, 6, A, or E (but usually 2) denotes a privately
234 # administered MAC address (while remaining routable).
235 # + I denotes bits that are inherited from parent interface.
236 #
237 # The S bits are a CRC-16 checksum of NAME, allowing the jail
238 # to change the epair(4) generation order without affecting the
239 # MAC address. Meanwhile, if the jail NAME changes (e.g., it
240 # was duplicated and given a new name with no other changes),
241 # the underlying network interface changes, or the jail is
242 # moved to another host, the MAC address will be recalculated
243 # to a new, similarly unique value preventing conflict.
244 #
245 iface_devid=$( ifconfig $iface ether | awk '/ether/,$0=$2' )
246 eiface_devid_a=${iface_devid#??:??:?}
247 eiface_devid_b=${iface_devid#??:??:?}
248 num=$( set -- `echo -n $name | sum` && echo $1 )
249 quad=$(( $num & 15 ))
250 case "$quad" in
251 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
252 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
253 esac
254 eiface_devid_a=:$quad$eiface_devid_a
255 eiface_devid_b=:$quad$eiface_devid_b
256 num=$(( $num >> 4 ))
257 quad=$(( $num & 15 ))
258 case "$quad" in
259 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
260 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
261 esac
262 eiface_devid_a=$quad$eiface_devid_a
263 eiface_devid_b=$quad$eiface_devid_b
264 num=$(( $num >> 4 ))
265 quad=$(( $num & 15 ))
266 case "$quad" in
267 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
268 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
269 esac
| 28#
29############################################################ IDENT(1)
30#
31# $Title: if_bridge(4) management script for vnet jails $
32#
33############################################################ INFORMATION
34#
35# Use this tool with jail.conf(5) (or rc.conf(5) ``legacy'' configuration) to
36# manage `vnet' interfaces for jails. Designed to automate the creation of vnet
37# interface(s) during jail `prestart' and destroy said interface(s) during jail
38# `poststop'.
39#
40# In jail.conf(5) format:
41#
42# ### BEGIN EXCERPT ###
43#
44# xxx {
45# host.hostname = "xxx.yyy";
46# path = "/vm/xxx";
47#
48# #
49# # NB: Below 2-lines required
50# # NB: The number of eNb_xxx interfaces should match the number of
51# # arguments given to `jib addm xxx' in exec.prestart value.
52# #
53# vnet;
54# vnet.interface = "e0b_xxx e1b_xxx ...";
55#
56# exec.clean;
57# exec.system_user = "root";
58# exec.jail_user = "root";
59#
60# #
61# # NB: Below 2-lines required
62# # NB: The number of arguments after `jib addm xxx' should match
63# # the number of eNb_xxx arguments in vnet.interface value.
64# #
65# exec.prestart += "jib addm xxx em0 em1 ...";
66# exec.poststop += "jib destroy xxx";
67#
68# # Standard recipe
69# exec.start += "/bin/sh /etc/rc";
70# exec.stop = "/bin/sh /etc/rc.shutdown";
71# exec.consolelog = "/var/log/jail_xxx_console.log";
72# mount.devfs;
73#
74# # Optional (default off)
75# #allow.mount;
76# #allow.set_hostname = 1;
77# #allow.sysvipc = 1;
78# #devfs_ruleset = "11"; # rule to unhide bpf for DHCP
79# }
80#
81# ### END EXCERPT ###
82#
83# In rc.conf(5) ``legacy'' format (used when /etc/jail.conf does not exist):
84#
85# ### BEGIN EXCERPT ###
86#
87# jail_enable="YES"
88# jail_list="xxx"
89#
90# #
91# # Global presets for all jails
92# #
93# jail_devfs_enable="YES" # mount devfs
94#
95# #
96# # Global options (default off)
97# #
98# #jail_mount_enable="YES" # mount /etc/fstab.{name}
99# #jail_set_hostname_allow="YES" # Allow hostname to change
100# #jail_sysvipc_allow="YES" # Allow SysV Interprocess Comm.
101#
102# # xxx
103# jail_xxx_hostname="xxx.shxd.cx" # hostname
104# jail_xxx_rootdir="/vm/xxx" # root directory
105# jail_xxx_vnet_interfaces="e0b_xxx e1bxxx ..." # vnet interface(s)
106# jail_xxx_exec_prestart0="jib addm xxx em0 em1 ..." # bridge interface(s)
107# jail_xxx_exec_poststop0="jib destroy xxx" # destroy interface(s)
108# #jail_xxx_mount_enable="YES" # mount /etc/fstab.xxx
109# #jail_xxx_devfs_ruleset="11" # rule to unhide bpf for DHCP
110#
111# ### END EXCERPT ###
112#
113# Note that the legacy rc.conf(5) format is converted to
114# /var/run/jail.{name}.conf by /etc/rc.d/jail if jail.conf(5) is missing.
115#
116# ASIDE: dhclient(8) inside a vnet jail...
117#
118# To allow dhclient(8) to work inside a vnet jail, make sure the following
119# appears in /etc/devfs.rules (which should be created if it doesn't exist):
120#
121# [devfsrules_jail=11]
122# add include $devfsrules_hide_all
123# add include $devfsrules_unhide_basic
124# add include $devfsrules_unhide_login
125# add include $devfsrules_unhide_bpf
126#
127# And set ether devfs.ruleset="11" (jail.conf(5)) or
128# jail_{name}_devfs_ruleset="11" (rc.conf(5)).
129#
130# NB: While this tool can't create every type of desirable topology, it should
131# handle most setups, minus some which considered exotic or purpose-built.
132#
133############################################################ GLOBALS
134
135pgm="${0##*/}" # Program basename
136
137#
138# Global exit status
139#
140SUCCESS=0
141FAILURE=1
142
143############################################################ FUNCTIONS
144
145usage()
146{
147 local action usage descr
148 exec >&2
149 echo "Usage: $pgm action [arguments]"
150 echo "Actions:"
151 for action in \
152 addm \
153 show \
154 show1 \
155 destroy \
156 ; do
157 eval usage=\"\$jib_${action}_usage\"
158 [ "$usage" ] || continue
159 eval descr=\"\$jib_${action}_descr\"
160 printf "\t%s\n\t\t%s\n" "$usage" "$descr"
161 done
162 exit $FAILURE
163}
164
165action_usage()
166{
167 local usage action="$1"
168 eval usage=\"\$jib_${action}_usage\"
169 echo "Usage: $pgm $usage" >&2
170 exit $FAILURE
171}
172
173mustberoot_to_continue()
174{
175 if [ "$( id -u )" -ne 0 ]; then
176 echo "Must run as root!" >&2
177 exit $FAILURE
178 fi
179}
180
181jib_addm_usage="addm [-b BRIDGE_NAME] NAME interface0 [interface1 ...]"
182jib_addm_descr="Creates e0b_NAME [e1b_NAME ...]"
183jib_addm()
184{
185 local OPTIND=1 OPTARG flag bridge=bridge
186 while getopts b: flag; do
187 case "$flag" in
188 b) bridge="${OPTARG:-bridge}" ;;
189 *) action_usage addm # NOTREACHED
190 esac
191 done
192 shift $(( $OPTIND - 1 ))
193
194 local name="$1"
195 [ "${name:-x}" = "${name#*[!0-9a-zA-Z_]}" -a $# -gt 1 ] ||
196 action_usage addm # NOTREACHED
197 shift 1 # name
198
199 mustberoot_to_continue
200
201 local iface iface_devid eiface_devid_a eiface_devid_b
202 local new num quad i=0
203 for iface in $*; do
204
205 # 1. Make sure the interface doesn't exist already
206 ifconfig "e${i}a_$name" > /dev/null 2>&1 && continue
207
208 # 2. Bring the interface up
209 ifconfig $iface up || return
210
211 # 3. Make sure the interface has been bridged
212 if ! ifconfig "$iface$bridge" > /dev/null 2>&1; then
213 new=$( ifconfig bridge create ) || return
214 ifconfig $new addm $iface || return
215 ifconfig $new name "$iface$bridge" || return
216 fi
217
218 # 4. Create a new interface to the bridge
219 new=$( ifconfig epair create ) || return
220 ifconfig "$iface$bridge" addm $new || return
221
222 # 5. Rename the new interface
223 ifconfig $new name "e${i}a_$name" || return
224 ifconfig ${new%a}b name "e${i}b_$name" || return
225
226 #
227 # 6. Set the MAC address of the new interface using a sensible
228 # algorithm to prevent conflicts on the network.
229 #
230 # The formula I'm using is ``SP:SS:SI:II:II:II'' where:
231 # + S denotes 16 bits of sum(1) data, split because P (below).
232 # + P denotes the special nibble whose value, if one of
233 # 2, 6, A, or E (but usually 2) denotes a privately
234 # administered MAC address (while remaining routable).
235 # + I denotes bits that are inherited from parent interface.
236 #
237 # The S bits are a CRC-16 checksum of NAME, allowing the jail
238 # to change the epair(4) generation order without affecting the
239 # MAC address. Meanwhile, if the jail NAME changes (e.g., it
240 # was duplicated and given a new name with no other changes),
241 # the underlying network interface changes, or the jail is
242 # moved to another host, the MAC address will be recalculated
243 # to a new, similarly unique value preventing conflict.
244 #
245 iface_devid=$( ifconfig $iface ether | awk '/ether/,$0=$2' )
246 eiface_devid_a=${iface_devid#??:??:?}
247 eiface_devid_b=${iface_devid#??:??:?}
248 num=$( set -- `echo -n $name | sum` && echo $1 )
249 quad=$(( $num & 15 ))
250 case "$quad" in
251 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
252 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
253 esac
254 eiface_devid_a=:$quad$eiface_devid_a
255 eiface_devid_b=:$quad$eiface_devid_b
256 num=$(( $num >> 4 ))
257 quad=$(( $num & 15 ))
258 case "$quad" in
259 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
260 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
261 esac
262 eiface_devid_a=$quad$eiface_devid_a
263 eiface_devid_b=$quad$eiface_devid_b
264 num=$(( $num >> 4 ))
265 quad=$(( $num & 15 ))
266 case "$quad" in
267 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
268 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
269 esac
|
270 eiface_devid_a=2:$quad$eiface_devid_a
271 eiface_devid_b=6:$quad$eiface_devid_b
| 270 case "$iface_devid" in
271 ?2:*|?6:*)
272 eiface_devid_a=a:$quad$eiface_devid_a
273 eiface_devid_b=e:$quad$eiface_devid_b
274 ;;
275 *)
276 eiface_devid_a=2:$quad$eiface_devid_a
277 eiface_devid_b=6:$quad$eiface_devid_b
278 esac
|
272 num=$(( $num >> 4 ))
273 quad=$(( $num & 15 ))
274 case "$quad" in
275 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
276 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
277 esac
278 eiface_devid_a=$quad$eiface_devid_a
279 eiface_devid_b=$quad$eiface_devid_b
280 ifconfig "e${i}a_$name" ether $eiface_devid_a > /dev/null 2>&1
281 ifconfig "e${i}b_$name" ether $eiface_devid_b > /dev/null 2>&1
282
283 i=$(( $i + 1 )) # on to next e{i}b_name
284 done # for iface
285}
286
287jib_show_usage="show"
288jib_show_descr="List possible NAME values for \`show NAME'"
289jib_show1_usage="show NAME"
290jib_show1_descr="Lists e0b_NAME [e1b_NAME ...]"
291jib_show2_usage="show [NAME]"
292jib_show()
293{
294 local OPTIND=1 OPTARG flag
295 while getopts "" flag; do
296 case "$flag" in
297 *) action_usage show2 # NOTREACHED
298 esac
299 done
300 shift $(( $OPTIND - 1 ))
301 if [ $# -eq 0 ]; then
302 ifconfig | awk '
303 /^[^:[:space:]]+:/ {
304 iface = $1
305 sub(/:.*/, "", iface)
306 next
307 }
308 $1 == "groups:" {
309 for (n = split($0, group); n > 1; n--) {
310 if (group[n] != "bridge") continue
311 print iface
312 next
313 }
314 }' |
315 xargs -rn1 ifconfig |
316 awk '$1 == "member:" &&
317 sub(/^e[[:digit:]]+a_/, "", $2), $0 = $2' |
318 sort -u
319 return
320 fi
321 ifconfig | awk -v name="$1" '
322 match($0, /^e[[:digit:]]+a_/) && sub(/:.*/, "") &&
323 substr($1, RSTART + RLENGTH) == name
324 ' | sort
325}
326
327jib_destroy_usage="destroy NAME"
328jib_destroy_descr="Destroy e0b_NAME [e1b_NAME ...]"
329jib_destroy()
330{
331 local OPTIND=1 OPTARG flag
332 while getopts "" flag; do
333 case "$flag" in
334 *) action_usage destroy # NOTREACHED
335 esac
336 done
337 shift $(( $OPTIND -1 ))
338 local name="$1"
339 [ "${name:-x}" = "${name#*[!0-9a-zA-Z_]}" -a $# -eq 1 ] ||
340 action_usage destroy # NOTREACHED
341 mustberoot_to_continue
342 jib_show "$name" | xargs -rn1 -I eiface ifconfig eiface destroy
343}
344
345############################################################ MAIN
346
347#
348# Command-line arguments
349#
350action="$1"
351[ "$action" ] || usage # NOTREACHED
352
353#
354# Validate action argument
355#
356if [ "$BASH_VERSION" ]; then
357 type="$( type -t "jib_$action" )" || usage # NOTREACHED
358else
359 type="$( type "jib_$action" 2> /dev/null )" || usage # NOTREACHED
360fi
361case "$type" in
362*function)
363 shift 1 # action
364 eval "jib_$action" \"\$@\"
365 ;;
366*) usage # NOTREACHED
367esac
368
369################################################################################
370# END
371################################################################################
| 279 num=$(( $num >> 4 ))
280 quad=$(( $num & 15 ))
281 case "$quad" in
282 10) quad=a ;; 11) quad=b ;; 12) quad=c ;;
283 13) quad=d ;; 14) quad=e ;; 15) quad=f ;;
284 esac
285 eiface_devid_a=$quad$eiface_devid_a
286 eiface_devid_b=$quad$eiface_devid_b
287 ifconfig "e${i}a_$name" ether $eiface_devid_a > /dev/null 2>&1
288 ifconfig "e${i}b_$name" ether $eiface_devid_b > /dev/null 2>&1
289
290 i=$(( $i + 1 )) # on to next e{i}b_name
291 done # for iface
292}
293
294jib_show_usage="show"
295jib_show_descr="List possible NAME values for \`show NAME'"
296jib_show1_usage="show NAME"
297jib_show1_descr="Lists e0b_NAME [e1b_NAME ...]"
298jib_show2_usage="show [NAME]"
299jib_show()
300{
301 local OPTIND=1 OPTARG flag
302 while getopts "" flag; do
303 case "$flag" in
304 *) action_usage show2 # NOTREACHED
305 esac
306 done
307 shift $(( $OPTIND - 1 ))
308 if [ $# -eq 0 ]; then
309 ifconfig | awk '
310 /^[^:[:space:]]+:/ {
311 iface = $1
312 sub(/:.*/, "", iface)
313 next
314 }
315 $1 == "groups:" {
316 for (n = split($0, group); n > 1; n--) {
317 if (group[n] != "bridge") continue
318 print iface
319 next
320 }
321 }' |
322 xargs -rn1 ifconfig |
323 awk '$1 == "member:" &&
324 sub(/^e[[:digit:]]+a_/, "", $2), $0 = $2' |
325 sort -u
326 return
327 fi
328 ifconfig | awk -v name="$1" '
329 match($0, /^e[[:digit:]]+a_/) && sub(/:.*/, "") &&
330 substr($1, RSTART + RLENGTH) == name
331 ' | sort
332}
333
334jib_destroy_usage="destroy NAME"
335jib_destroy_descr="Destroy e0b_NAME [e1b_NAME ...]"
336jib_destroy()
337{
338 local OPTIND=1 OPTARG flag
339 while getopts "" flag; do
340 case "$flag" in
341 *) action_usage destroy # NOTREACHED
342 esac
343 done
344 shift $(( $OPTIND -1 ))
345 local name="$1"
346 [ "${name:-x}" = "${name#*[!0-9a-zA-Z_]}" -a $# -eq 1 ] ||
347 action_usage destroy # NOTREACHED
348 mustberoot_to_continue
349 jib_show "$name" | xargs -rn1 -I eiface ifconfig eiface destroy
350}
351
352############################################################ MAIN
353
354#
355# Command-line arguments
356#
357action="$1"
358[ "$action" ] || usage # NOTREACHED
359
360#
361# Validate action argument
362#
363if [ "$BASH_VERSION" ]; then
364 type="$( type -t "jib_$action" )" || usage # NOTREACHED
365else
366 type="$( type "jib_$action" 2> /dev/null )" || usage # NOTREACHED
367fi
368case "$type" in
369*function)
370 shift 1 # action
371 eval "jib_$action" \"\$@\"
372 ;;
373*) usage # NOTREACHED
374esac
375
376################################################################################
377# END
378################################################################################
|