Mercurial > hgrepos > FreeBSD > ports > sysutils > local-bsdtools
annotate sbin/fjail @ 227:a7a9fd895d30
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| author | Franz Glasner <fzglas.hg@dom66.de> |
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| date | Thu, 01 Sep 2022 09:33:16 +0200 |
| parents | 73f2436fdf86 |
| children | 4493e364cabf |
| rev | line source |
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1 #!/bin/sh |
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2 # -*- indent-tabs-mode: nil; -*- |
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3 : 'A very minimal BSD Jail management tool. |
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4 |
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5 :Author: Franz Glasner |
| 193 | 6 :Copyright: (c) 2019-2022 Franz Glasner. |
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7 All rights reserved. |
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8 :License: BSD 3-Clause "New" or "Revised" License. |
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9 See LICENSE for details. |
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10 If you cannot find LICENSE see |
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11 <https://opensource.org/licenses/BSD-3-Clause> |
| 93 | 12 :ID: @(#)@@PKGORIGIN@@ $HGid$ |
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13 |
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14 ' |
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15 |
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16 set -eu |
| 73 | 17 |
| 18 VERSION="@@VERSION@@" | |
| 19 | |
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20 USAGE=' |
| 75 | 21 USAGE: fjail [ OPTIONS ] COMMAND [ COMMAND OPTIONS ] [ ARG ... ] |
| 22 | |
| 23 OPTIONS: | |
| 24 | |
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25 -V Print the program name and version number to stdout and exit |
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26 |
| 75 | 27 -h Print this help message to stdout and exit |
| 28 | |
| 29 COMMANDS: | |
| 30 | |
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31 datasets [OPTIONS] PARENT CHILD |
| 75 | 32 |
| 33 Create ZFS datasets to be used within a jail | |
| 34 | |
| 35 PARENT must exist already and CHILD must not exist. | |
| 36 | |
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37 -A Set "canmount=auto" for datasets |
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38 -o Do not create var/empty as read-only dataset but with normal settings |
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39 -s Also create a dataset for freebsd-update data files |
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40 -t Create a more tiny set of datasets |
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41 -T Create only an extra tiny set of datasets |
| 75 | 42 -u Do not automatically mount newly created datasets |
| 43 | |
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44 mount [-O] [-u] [-n] DATASET [MOUNTPOINT] |
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45 |
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46 Mount the ZFS dataset DATASET and all its children to mountpoint |
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47 MOUNTPOINT |
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48 |
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49 -O Also mount datasets at mountpoints outside of their "natural" |
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50 and inherited mountpoints |
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51 -N Mount at their "natural" configured ZFS mountpoints (MOUNTPOINT is not required) |
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52 -n Do not really mount but show what would be mounted where |
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53 -u Alias of -n |
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54 |
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55 umount DATASET |
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56 |
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57 Unmount the mounted DATASET and all its children |
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58 |
| 75 | 59 privs MOUNTPOINT |
| 60 | |
| 61 Adjust some Unix privileges to mounted jail datasets | |
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62 |
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63 populate MOUNTPOINT BASETXZ |
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64 |
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65 Populate the jail directory in MOUNTPOINT with the base system in BASETXZ |
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66 |
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67 configure MOUNPOINT |
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68 |
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69 Configure some basic parts of the system at MOUNTPOINT: |
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70 disable root password, syslog and other basic configuration settings |
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71 |
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72 hostid |
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73 |
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74 Print proposals for a hostuuid and hostid |
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75 |
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76 copy [OPTIONS] SOURCE-DATASET DEST-DATASET |
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77 |
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78 Copy a tree of ZFS datasets with "zfs send -R" and "zfs receive". |
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79 Note that the destination dataset must not exist already. |
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80 |
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81 -r Copy the datasets with the -Lec options (aka "raw") |
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82 -u Do not automatically mount received datasets |
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83 |
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84 ENVIRONMENT: |
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85 |
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86 All environment variables that affect "zfs" are effective also. |
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87 |
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88 DESCRIPTION: |
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89 |
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90 All commands with the exception of "populate" require ZFS as |
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91 filesystem. |
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92 ' |
| 75 | 93 |
| 94 | |
| 73 | 95 # Reset to standard umask |
| 96 umask 0022 | |
| 97 | |
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98 |
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99 _get_dataset_for_mountpoint() { |
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100 : 'Use `mount -t zfs -p` to determine the ZFS dataset for a given mountpoint. |
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101 |
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102 ' |
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103 local _mountpoint |
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104 local _ds _mount _rest |
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105 |
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106 _mountpoint="$1" |
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107 |
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108 mount -t zfs -p \ |
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109 | { |
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110 while IFS=' '$'\t' read -r _ds _mount _rest ; do |
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111 if [ "$_mount" = "$_mountpoint" ]; then |
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112 echo "${_ds}" |
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113 return 0 |
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114 fi |
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115 done |
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116 return 1 |
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117 } |
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118 } |
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119 |
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120 |
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121 _get_dataset_for_varempty() { |
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122 : 'Allow special handling for <mountpoint>/var/empty which may be |
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123 mounted read-only. |
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124 |
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125 ' |
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126 local _mountpoint |
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127 local _ve_mount |
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128 |
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129 _mountpoint="$1" |
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130 |
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131 if [ "$_mountpoint" = '/' ]; then |
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132 _ve_mount='/var/empty' |
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133 else |
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134 _ve_mount="${_mountpoint}/var/empty" |
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135 fi |
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136 |
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137 _get_dataset_for_mountpoint "${_ve_mount}" |
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138 } |
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139 |
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140 |
| 73 | 141 # |
| 142 # "datasets" -- create the ZFS dataset tree | |
| 143 # | |
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144 # command_datasets [ -u ] parent-dataset child-dataset |
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145 # |
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146 # -u do not automatically mount newly created datasets |
| 73 | 147 # |
| 148 command_datasets() { | |
| 149 # parent ZFS dataset -- child ZFS dataset name | |
| 150 local _pds _cds | |
| 151 # and its mount point | |
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152 local _pmp _get |
| 73 | 153 # full name of the dataset |
| 154 local _ds | |
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155 # dynamic ZFS options -- create cache for freebsd-update -- use a more tiny layout |
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156 local _zfsopts _fbsdupdate _tiny _zfsnoauto _varempty_ro |
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157 |
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158 _zfsopts="" |
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177
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159 _fbsdupdate="" |
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160 _tiny="no" |
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161 _zfsnoauto="" |
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162 _varempty_ro="-o readonly=on" |
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163 while getopts "oustAT" _opt ; do |
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164 case ${_opt} in |
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165 A) |
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166 # |
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167 # set canmount=noauto where otherwise canmount=on would have been set |
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168 # or inherited |
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169 # |
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170 _zfsnoauto="-o canmount=noauto" |
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171 ;; |
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172 o) |
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173 # Clear out the default setting of creating var/empty as read-only dataset |
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174 _varempty_ro="" |
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175 ;; |
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176 t) |
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177 # use a more tiny layout |
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178 _tiny="yes" |
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179 ;; |
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180 T) # extra tiny layout |
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181 _tiny="extra" |
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182 ;; |
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183 u) |
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184 # do not mount newly created datasets |
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185 _zfsopts="${_zfsopts} -u" |
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186 ;; |
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187 s) |
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188 # create also a dataset for freebsd-update data |
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189 _fbsdupdate="yes" |
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179
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190 ;; |
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191 \?|:) |
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192 return 2; |
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193 ;; |
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194 esac |
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195 done |
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196 shift $((OPTIND-1)) |
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197 OPTIND=1 |
| 73 | 198 |
| 199 _pds="$1" | |
| 200 if [ -z "${_pds}" ]; then | |
| 201 echo "ERROR: no parent dataset given" >&2 | |
| 202 return 2 | |
| 203 fi | |
|
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204 _pmp=$(zfs list -H -o mountpoint -t filesystem "${_pds}" 2>/dev/null) || { echo "ERROR: dataset \`${_pds}' does not exist" >&2; return 1; } |
| 73 | 205 case "${_pmp}" in |
| 206 none) | |
| 207 echo "ERROR: dataset \`${_pds}' has no mountpoint" >&2 | |
| 208 return 1 | |
| 209 ;; | |
| 210 legacy) | |
| 211 echo "ERROR: dataset \`${_pds}' has a \`${_mp}' mountpoint" >&2 | |
| 212 return 1 | |
| 213 ;; | |
| 214 *) | |
| 215 # VOID | |
| 216 ;; | |
| 217 esac | |
| 218 _cds="$2" | |
| 219 if [ -z "${_cds}" ]; then | |
| 220 echo "ERROR: no child dataset given" >&2 | |
| 221 return 2 | |
| 222 fi | |
| 223 _ds="${_pds}/${_cds}" | |
| 224 echo "Resulting new root dataset is \`${_ds}' at mountpoint \`${_pmp}/${_cds}'" | |
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225 if zfs list -H -o mountpoint -t filesystem "${_ds}" >/dev/null 2>/dev/null; then |
| 73 | 226 echo "ERROR: dataset \`${_ds}' does already exist" >&2 |
| 227 return 1 | |
| 228 fi | |
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229 |
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230 # |
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231 # NOTE: For BEs these directory will be *excluded* from the BE |
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232 # |
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233 # /tmp |
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234 # /usr/home |
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235 # /usr/ports |
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236 # /usr/src |
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237 # /var/audit |
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238 # /var/crash |
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239 # /var/log |
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240 # /var/mail |
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241 # /var/tmp |
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242 # |
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243 zfs create ${_zfsopts} ${_zfsnoauto} -o atime=off "${_ds}" |
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244 zfs create ${_zfsopts} ${_zfsnoauto} -o sync=disabled -o setuid=off "${_ds}/tmp" |
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245 if [ "${_tiny}" != "extra" ]; then |
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246 if [ "${_tiny}" = "yes" ]; then |
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247 zfs create ${_zfsopts} -o canmount=off "${_ds}/usr" |
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248 else |
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249 zfs create ${_zfsopts} ${_zfsnoauto} "${_ds}/usr" |
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250 fi |
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251 zfs create ${_zfsopts} ${_zfsnoauto} -o setuid=off "${_ds}/usr/home" |
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252 zfs create ${_zfsopts} ${_zfsnoauto} "${_ds}/usr/local" |
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253 fi |
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254 if [ \( "${_tiny}" = "yes" \) -o \( "${_tiny}" = "extra" \) ]; then |
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255 zfs create ${_zfsopts} -o canmount=off "${_ds}/var" |
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256 else |
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257 zfs create ${_zfsopts} ${_zfsnoauto} "${_ds}/var" |
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258 fi |
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259 if [ "${_tiny}" != "extra" ]; then |
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260 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off "${_ds}/var/audit" |
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261 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off "${_ds}/var/cache" |
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262 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o primarycache=metadata -o compression=off "${_ds}/var/cache/pkg" |
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263 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o compression=off "${_ds}/var/crash" |
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264 fi |
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265 if [ "$_fbsdupdate" = "yes" ]; then |
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266 if [ \( "${_tiny}" = "yes" \) -o \( "${_tiny}" = "extra" \) ]; then |
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267 zfs create ${_zfsopts} -o canmount=off -o exec=off -o setuid=off "${_ds}/var/db" |
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268 else |
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269 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off "${_ds}/var/db" |
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270 fi |
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271 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o primarycache=metadata -o compression=off "${_ds}/var/db/freebsd-update" |
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272 fi |
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273 zfs create ${_zfsopts} ${_zfsnoauto} ${_varempty_ro} -o exec=off -o setuid=off "${_ds}/var/empty" |
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274 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o primarycache=metadata "${_ds}/var/log" |
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275 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o atime=on "${_ds}/var/mail" |
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276 zfs create ${_zfsopts} ${_zfsnoauto} -o sync=disabled -o exec=off -o setuid=off -o compression=off -o primarycache=all "${_ds}/var/run" |
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277 zfs create ${_zfsopts} ${_zfsnoauto} -o sync=disabled -o setuid=off "${_ds}/var/tmp" |
| 73 | 278 } |
| 279 | |
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280 |
| 73 | 281 # |
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282 # "populate" -- populate the datasets with content from a FreeBSD base.txz |
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283 # |
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284 # command_populate mountpoint basetxz |
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285 # |
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286 command_populate() { |
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287 # MOUNTPOINT -- base.txz |
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288 local _mp _basetxz |
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289 |
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290 _mp="$1" |
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291 _basetxz="$2" |
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292 |
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293 if [ -z "${_mp}" ]; then |
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294 echo "ERROR: no mountpoint given" >&2 |
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295 return 2 |
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296 fi |
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297 if [ -z "${_basetxz}" ]; then |
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298 echo "ERROR: no base.txz given" >&2 |
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299 return 2 |
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300 fi |
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301 if [ ! -d "${_mp}" ]; then |
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302 echo "ERROR: mountpoint \`${_mp}' does not exist" >&2 |
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303 return 1 |
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304 fi |
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305 if [ ! -r "${_basetxz}" ]; then |
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306 echo "ERROR: file \`${_basetxz}' is not readable" >&2 |
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307 return 1 |
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308 fi |
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309 |
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310 # |
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311 # Handle /var/empty separately later: could be already there and |
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312 # mounted read-only. |
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313 # |
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314 tar -C "${_mp}" --exclude=./var/empty -xJp -f "${_basetxz}" || { echo "ERROR: tar encountered errors" >&2; return 1; } |
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315 if [ -d "${_mp}/var/empty" ]; then |
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316 # |
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317 # If /var/empty exists already try to extract with changing the |
|
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318 # flags (e.g. `schg'). But be ignore errors here. |
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319 # |
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320 tar -C "${_mp}" -xJp -f "${_basetxz}" ./var/empty || { echo "tar warnings for handling ./var/empty ignored because ./var/empty exists already" >&2; } |
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321 else |
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322 # Just extract /var/empty normally |
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323 tar -C "${_mp}" -xJp -f "${_basetxz}" ./var/empty || { echo "ERROR: tar encountered errors" >&2; return 1; } |
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324 fi |
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325 |
|
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326 find "${_mp}/boot" -type f -delete |
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327 } |
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328 |
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329 |
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330 # |
|
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331 # "hostid" -- print a proposal for hostid/hostuuid settings in a jail |
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332 # |
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333 # command_hostid |
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334 # |
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335 command_hostid() { |
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336 # |
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337 # hostid and hostuuid should be set (at least for consistency ressons) |
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338 # in vnet jails (see /etc/rc.d/hostid and /etc/rc.d/hostid_save). |
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339 # They can be set in the jail.conf. |
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340 # Print one here that can be pasted into the jail.conf if needed. |
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341 # |
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342 # hostid and hostuuid for non-vnet jails are inherited from the parent/host. |
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343 # |
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344 # See also /etc/rc.d/hostid and /etc/rc.d/hostid_save. |
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345 # |
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346 local _new_hostuuid _new_hostid |
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347 _new_hostuuid="$(uuidgen)" |
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348 _new_hostid="$(echo -n ${_new_hostuuid} | /sbin/md5)" |
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349 _new_hostid="0x${_new_hostid%%????????????????????????}" |
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350 |
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351 echo "Proposed hostuuid/hostid:" |
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352 echo " host.hostuuid = \"${_new_hostuuid}\";" |
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353 echo " host.hostid = $((_new_hostid));" |
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354 #echo " host.hostid = ${_new_hostid};" |
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355 } |
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356 |
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357 |
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358 # |
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219
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359 # "configure" -- configure the mountpoint |
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360 # |
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361 # command_configure mountpoint |
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362 # |
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363 command_configure() { |
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364 # mountpoint |
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365 local _mp |
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366 |
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367 _mp="$1" |
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368 |
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369 if [ -z "${_mp}" ]; then |
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370 echo "ERROR: no mountpoint given" >&2 |
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371 return 2 |
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372 fi |
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373 if [ ! -d "${_mp}" ]; then |
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374 echo "ERROR: mountpoint \`${_mp}' does not exist" >&2 |
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375 return 1 |
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376 fi |
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377 |
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378 # Deactive the by default empty root password |
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379 pw -R "${_mp}" usermod -w no -n root |
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380 |
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381 sysrc -R "${_mp}" sendmail_enable=NONE |
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382 sysrc -R "${_mp}" clear_tmp_enable=YES |
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383 sysrc -R "${_mp}" clear_tmp_X=NO |
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384 sysrc -R "${_mp}" syslogd_flags=-ss |
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385 sysrc -R "${_mp}" bsdstats_enable=NO # no automatic BSD stats when booting |
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386 |
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387 # Timezone to CET |
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388 if [ ! -f "${_mp}/etc/localtime" ]; then |
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389 echo "Setting timezone to Europe/Berlin" |
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390 ln -s ../usr/share/zoneinfo/Europe/Berlin "${_mp}/etc/localtime" |
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391 echo "Europe/Berlin" > "${_mp}/var/db/zoneinfo" |
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392 else |
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393 echo "WARNING: \"${_mp}/etc/localtime\" exists already -- not changed" |
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394 fi |
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221
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395 |
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396 # resolv.conf |
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397 if [ ! -f "${_mp}/etc/resolv.conf" ]; then |
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398 echo "Copying the host's resolv.conf into the jail" |
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399 cp -p /etc/resolv.conf "${_mp}/etc/resolv.conf" |
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400 else |
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401 echo "WARNING: \"${_mp}/etc/resolv.conf\" exists already -- not changed" |
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402 fi |
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403 |
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225
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404 # Call newaliases within the jail |
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227
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405 echo "Calling \"newaliases\"" |
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406 chroot "${_mp}" /usr/bin/newaliases |
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407 |
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226
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408 command_hostid |
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409 } |
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410 |
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411 |
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412 # |
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413 # "copy" -- ZFS copy of datasets |
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414 # |
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415 # command_copy source-dataset destination-dataset |
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416 # |
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417 command_copy() { |
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418 # source dataset -- destination dataset |
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419 local _source _dest |
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420 # dynamic ZFS options -- ZFS copy options |
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421 local _zfsopts _zfscopyopts |
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422 |
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423 _zfsopts="" |
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424 _zfscopyopts="" |
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425 while getopts "ru" _opt ; do |
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426 case ${_opt} in |
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427 r) |
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428 # Use raw datasets |
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429 _zfscopyopts="-Lec" |
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430 ;; |
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431 u) |
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432 # do not mount newly created datasets |
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433 _zfsopts="${_zfsopts} -u" |
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434 ;; |
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435 \?|:) |
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436 return 2; |
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437 ;; |
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438 esac |
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439 done |
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440 shift $((OPTIND-1)) |
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441 OPTIND=1 |
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442 |
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443 _source="$1" |
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444 if [ -z "${_source}" ]; then |
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445 echo "ERROR: no source dataset given" >&2 |
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446 return 2 |
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447 fi |
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448 _dest="$2" |
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449 if [ -z "${_dest}" ]; then |
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450 echo "ERROR: no source dataset given" >&2 |
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451 return 2 |
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452 fi |
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453 zfs send -R ${_zfscopyopts} -n -v "${_source}" || { echo "ERROR: ZFS operation failed in no-op mode" >&2; return 1; } |
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454 zfs send -R ${_zfscopyopts} "${_source}" | zfs receive ${_zfsopts} "${_dest}" || { echo "ERROR: ZFS operation failed" >&2; return 1; } |
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455 } |
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456 |
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457 |
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458 # |
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459 # "mount" -- recursively mount a dataset including subordinate datasets |
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460 # |
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461 # command_mount dataset mountpoint |
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462 # |
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463 command_mount() { |
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464 local _dsname _mountpoint |
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465 local _name _mp _canmount _mounted |
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466 local _rootds_mountpoint _relative_mp _real_mp |
|
207
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467 local _dry_run _mount_outside _mount_natural |
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468 |
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469 _dry_run="" |
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470 _mount_outside="" |
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471 _mount_natural="" |
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472 while getopts "ONnu" _opt ; do |
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473 case ${_opt} in |
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474 O) |
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475 _mount_outside="yes" |
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476 ;; |
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477 N) |
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478 _mount_natural="yes" |
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479 ;; |
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480 n|u) |
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481 _dry_run="yes" |
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482 ;; |
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483 \?|:) |
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484 return 2; |
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485 ;; |
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486 esac |
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487 done |
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488 shift $((OPTIND-1)) |
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489 OPTIND=1 |
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490 |
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491 _dsname="${1-}" |
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492 _mountpoint="${2-}" |
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493 |
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494 if [ -z "${_dsname}" ]; then |
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495 echo "ERROR: no dataset given" >&2 |
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496 return 2 |
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497 fi |
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498 |
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499 _rootds_mountpoint="$(zfs list -H -o mountpoint -t filesystem "${_dsname}")" || \ |
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500 { echo "ERROR: root dataset does not exist" >&2; return 1; } |
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501 |
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502 if [ -z "${_mountpoint}" ]; then |
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503 if [ "${_mount_natural}" = "yes" ]; then |
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504 _mountpoint="${_rootds_mountpoint}" |
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505 else |
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506 echo "ERROR: no mountpoint given" >&2 |
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507 return 2 |
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508 fi |
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509 else |
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510 if [ "${_mount_natural}" = "yes" ]; then |
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511 echo "ERROR: Cannot have a custom mountpoint when \"-O\" is given" >&2 |
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512 return 2 |
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513 fi |
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514 fi |
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515 |
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516 # Eventually remove a trailing slash |
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517 _mountpoint="${_mountpoint%/}" |
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518 if [ -z "${_mountpoint}" ]; then |
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519 echo "ERROR: would mount over the root filesystem" >&2 |
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520 return 1 |
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521 fi |
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522 |
|
201
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523 zfs list -H -o name,mountpoint,canmount,mounted -s mountpoint -t filesystem -r "${_dsname}" \ |
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524 | { |
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525 while IFS=$'\t' read -r _name _mp _canmount _mounted ; do |
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526 # Skip filesystems that are already mounted |
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527 [ "${_mounted}" = "yes" ] && continue |
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528 # Skip filesystems that must not be mounted |
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529 [ "${_canmount}" = "off" ] && continue |
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530 case "${_mp}" in |
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531 "none"|"legacy") |
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532 # Do nothing for filesystem with unset or legacy mountpoints |
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533 ;; |
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534 "${_rootds_mountpoint}"|"${_rootds_mountpoint}/"*) |
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535 # |
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536 # Handle only mountpoints that have a mountpoint below |
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537 # the parent datasets mountpoint |
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538 # |
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539 |
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540 # Determine the mountpoint relative to the parent mountpoint |
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541 _relative_mp="${_mp#${_rootds_mountpoint}}" |
| 209 | 542 # Eventually remove a trailing slash |
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543 _relative_mp="${_relative_mp%/}" |
| 209 | 544 # The real effective full mountpoint |
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545 _real_mp="${_mountpoint}${_relative_mp}" |
|
210
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546 |
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547 # |
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548 # Consistency and sanity check: computed real mountpoint must |
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549 # be equal to the configured mountpoint when no custom mountpoint |
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550 # is given. |
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551 # |
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552 if [ "${_mount_natural}" = "yes" ]; then |
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553 if [ "${_real_mp}" != "${_mp}" ]; then |
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554 echo "ERROR: mountpoint mismatch" >&2 |
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555 return 1 |
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556 fi |
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557 fi |
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558 |
|
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559 if [ "${_dry_run}" = "yes" ]; then |
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560 echo "Would mount ${_name} on ${_real_mp}" |
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561 else |
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562 mkdir -p "${_real_mp}" 1> /dev/null 2> /dev/null || \ |
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563 { echo "ERROR: cannot create mountpoint ${_real_mp}" >&2; return 1; } |
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564 echo "Mounting ${_name} on ${_real_mp}" |
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565 mount -t zfs "${_name}" "${_real_mp}" || return 1 |
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566 fi |
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567 ;; |
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568 *) |
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569 if [ "${_mount_outside}" = "yes" ]; then |
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570 if [ "${_dry_run}" = "yes" ]; then |
| 208 | 571 echo "Would mount ${_name} on configured ZFS dataset mountpoint ${_mp}" |
|
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572 else |
| 208 | 573 echo "Mounting ${_name} on configured ZFS dataset mountpoint ${_mp}" |
|
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574 zfs mount "${_name}" || return 1 |
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575 fi |
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576 else |
| 208 | 577 echo "Skipping ${_name} because its configured ZFS mountpoint is not relative to given root dataset" 2>&1 |
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578 fi |
|
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579 ;; |
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580 esac |
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581 done |
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582 |
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583 return 0 |
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584 } |
|
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585 } |
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586 |
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587 |
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588 # |
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589 # "umount" -- Recursively unmount ZFS datasets |
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590 # |
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591 # command_umount dataset |
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592 # |
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593 command_umount() { |
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594 local _dsname |
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595 local _name _mp _rest |
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596 local _rootds_mountpoint |
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597 |
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598 _dsname="${1-}" |
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599 [ -z "${_dsname}" ] && \ |
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600 { echo "ERROR: no dataset given" >&2; return 2; } |
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601 |
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602 # Just determine whether the given dataset name exists |
|
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603 _rootds_mountpoint="$(zfs list -H -o mountpoint -t filesystem "${_dsname}")" || { echo "ERROR: dataset not found" >&2; return 1; } |
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604 |
|
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605 mount -t zfs -p \ |
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606 | grep -E "^${_dsname}(/|\s)" \ |
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607 | sort -n -r \ |
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608 | { |
|
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609 while IFS=' '$'\t' read -r _name _mp _rest ; do |
|
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610 echo "Umounting ${_name} on ${_mp}" |
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611 umount "${_mp}" || return 1 |
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612 done |
|
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613 return 0 |
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614 } |
|
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615 } |
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616 |
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617 |
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618 # |
| 73 | 619 # "privs" -- adjust privileges |
| 620 # | |
| 621 # To be used when all ZFS datasets are mounted. | |
| 622 # | |
| 623 command_privs() { | |
| 624 # mountpoint | |
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625 local _mp _d _veds _get _vestatus |
| 73 | 626 |
| 627 _mp="$1" | |
| 628 if [ -z "${_mp}" ]; then | |
| 629 echo "ERROR: no mountpoint given" >&2 | |
| 630 return 2 | |
| 631 fi | |
| 632 if [ ! -d "${_mp}" ]; then | |
| 633 echo "ERROR: directory \`${_mp}' does not exist" >&2 | |
| 634 return 1 | |
| 635 fi | |
| 636 for _d in tmp var/tmp ; do | |
| 637 chmod 01777 "${_mp}/${_d}" | |
| 638 done | |
| 639 chown root:mail "${_mp}/var/mail" | |
| 640 chmod 0775 "${_mp}/var/mail" | |
|
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641 |
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642 # |
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643 # Handle <mountpoint>/var/empty specially: |
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644 # make it writeable temporarily if it is mounted read-only: |
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645 # |
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646 _vestatus="" |
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647 _veds="$(_get_dataset_for_varempty "${_mp}")" |
|
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648 if [ $? -eq 0 ]; then |
|
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649 _vestatus=$(zfs list -H -o readonly -t filesystem ${_veds} 2>/dev/null) || { echo "ERROR: cannot determine readonly status of ${_mp}/var/empty" >&2; return 1; } |
|
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650 if [ "${_vestatus}" = "on" ]; then |
|
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651 zfs set readonly=off ${_veds} 1> /dev/null || { echo "ERROR: cannot reset readonly-status of ${_mp}/var/empty" >&2; return 1; } |
|
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652 fi |
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653 fi |
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654 # Set the access rights and the file flags as given in mtree |
|
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655 chmod 0555 "${_mp}/var/empty" || { echo "WARNING: Cannot chmod on var/empty" >&2; } |
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656 chflags schg "${_mp}/var/empty" || { echo "WARNING: Cannot chflags on var/empty" >&2; } |
|
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657 # Reset the read-only status of the mountpoint as it was before |
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658 if [ "${_vestatus}" = "on" ]; then |
|
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659 zfs set readonly=on ${_veds} 1> /dev/null || { echo "ERROR: cannot reactivate readonly-status of ${_mp}/var/empty" >&2; return 1; } |
|
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660 fi |
| 73 | 661 } |
|
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662 |
|
74
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663 |
|
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664 # |
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665 # Global option handling |
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666 # |
|
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667 while getopts "Vh" _opt ; do |
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668 case ${_opt} in |
|
81
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669 V) |
|
144
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670 printf 'fjail v%s (rv:%s)\n' "${VERSION}" '@@HGREVISION@@' |
|
81
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671 exit 0 |
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672 ;; |
|
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673 h) |
| 75 | 674 echo "${USAGE}" |
|
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675 exit 0 |
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676 ;; |
|
80
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677 \?) |
|
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678 exit 2; |
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679 ;; |
|
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680 *) |
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681 echo "ERROR: option handling failed" >&2 |
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682 exit 2 |
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683 ;; |
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684 esac |
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685 done |
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686 |
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687 # |
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688 # Reset the Shell's option handling system to prepare for handling |
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689 # command-local options. |
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690 # |
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691 shift $((OPTIND-1)) |
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692 OPTIND=1 |
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693 |
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694 test $# -gt 0 || { echo "ERROR: no command given" >&2; exit 2; } |
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695 |
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696 command="$1" |
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697 shift |
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698 |
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699 case "${command}" in |
| 73 | 700 datasets) |
| 701 command_datasets "$@" | |
| 702 ;; | |
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703 mount) |
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704 command_mount "$@" |
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705 ;; |
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706 umount|unmount) |
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707 command_umount "$@" |
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708 ;; |
| 73 | 709 privs) |
| 710 command_privs "$@" | |
| 711 ;; | |
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712 populate) |
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713 command_populate "$@" |
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714 ;; |
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715 configure) |
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716 command_configure "$@" |
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717 ;; |
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718 hostid) |
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719 command_hostid "$@" |
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720 ;; |
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721 copy) |
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722 command_copy "$@" |
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723 ;; |
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724 *) |
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725 echo "ERROR: unknown command \`${command}'" >&2 |
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726 exit 2 |
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727 ;; |
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728 esac |