Mercurial > hgrepos > FreeBSD > ports > sysutils > local-bsdtools
annotate sbin/fjail @ 274:570363928b13
Convert the "module" doc-string to a `#:'-style comment
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Sat, 17 Sep 2022 14:42:28 +0200 |
| parents | 95a81116471a |
| children | 3c24b07240f2 |
| 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=noauto" 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 -P Do not mount the given prent DATASET but only its children |
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53 -n Do not really mount but show what would be mounted where |
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54 -u Alias of -n |
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55 |
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56 umount DATASET |
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57 |
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58 Unmount the mounted DATASET and all its children |
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59 |
| 75 | 60 privs MOUNTPOINT |
| 61 | |
| 62 Adjust some Unix privileges to mounted jail datasets | |
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63 |
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64 populate MOUNTPOINT BASETXZ |
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65 |
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66 Populate the jail directory in MOUNTPOINT with the base system in BASETXZ |
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67 |
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68 configure MOUNPOINT |
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69 |
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70 Configure some basic parts of the system at MOUNTPOINT: |
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71 disable root password, syslog and other basic configuration settings |
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72 |
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73 Also handle thin jails by checking whether "etc" is a symlink to |
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74 "skeleton/etc". |
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75 |
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76 hostid |
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77 |
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78 Print proposals for a hostuuid and hostid |
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79 |
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80 copy [OPTIONS] SOURCE-DATASET DEST-DATASET |
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81 |
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82 Copy a tree of ZFS datasets with "zfs send -R" and "zfs receive". |
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83 Note that the destination dataset must not exist already. |
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84 |
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85 -r Copy the datasets with the -Lec options (aka "raw") |
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86 -u Do not automatically mount received datasets |
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87 |
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88 ENVIRONMENT: |
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89 |
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90 All environment variables that affect "zfs" are effective also. |
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91 |
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92 DESCRIPTION: |
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93 |
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94 All commands with the exception of "populate" require ZFS as |
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95 filesystem. |
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96 ' |
| 75 | 97 |
| 98 | |
| 73 | 99 # Reset to standard umask |
| 100 umask 0022 | |
| 101 | |
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102 |
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103 _get_dataset_for_mountpoint() { |
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104 : 'Use `mount -t zfs -p` to determine the ZFS dataset for a given mountpoint. |
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105 |
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106 ' |
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107 local _mountpoint |
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108 local _ds _mount _rest |
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109 |
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110 _mountpoint="$1" |
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111 |
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112 mount -t zfs -p \ |
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113 | { |
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114 while IFS=' '$'\t' read -r _ds _mount _rest ; do |
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115 if [ "$_mount" = "$_mountpoint" ]; then |
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116 echo "${_ds}" |
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117 return 0 |
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118 fi |
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119 done |
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120 return 1 |
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121 } |
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122 } |
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123 |
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124 |
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125 _get_dataset_for_varempty() { |
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126 : 'Allow special handling for <mountpoint>/var/empty which may be |
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127 mounted read-only. |
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128 |
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129 ' |
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130 local _mountpoint |
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131 local _ve_mount |
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132 |
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133 _mountpoint="$1" |
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134 |
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135 if [ "$_mountpoint" = '/' ]; then |
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136 _ve_mount='/var/empty' |
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137 else |
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138 _ve_mount="${_mountpoint}/var/empty" |
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139 fi |
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140 |
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141 _get_dataset_for_mountpoint "${_ve_mount}" |
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142 } |
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143 |
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144 |
| 73 | 145 # |
| 146 # "datasets" -- create the ZFS dataset tree | |
| 147 # | |
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148 # command_datasets [ -u ] parent-dataset child-dataset |
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149 # |
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150 # -u do not automatically mount newly created datasets |
| 73 | 151 # |
| 152 command_datasets() { | |
| 153 # parent ZFS dataset -- child ZFS dataset name | |
| 154 local _pds _cds | |
| 155 # and its mount point | |
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156 local _pmp _get |
| 73 | 157 # full name of the dataset |
| 158 local _ds | |
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159 # dynamic ZFS options -- create cache for freebsd-update -- use a more tiny layout |
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160 local _zfsopts _fbsdupdate _tiny _zfsnoauto _varempty_ro |
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161 |
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162 _zfsopts="" |
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177
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163 _fbsdupdate="" |
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164 _tiny="no" |
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165 _zfsnoauto="" |
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166 _varempty_ro="-o readonly=on" |
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167 while getopts "oustAT" _opt ; do |
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168 case ${_opt} in |
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169 A) |
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170 # |
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171 # set canmount=noauto where otherwise canmount=on would have been set |
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172 # or inherited |
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173 # |
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174 _zfsnoauto="-o canmount=noauto" |
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175 ;; |
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176 o) |
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177 # Clear out the default setting of creating var/empty as read-only dataset |
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178 _varempty_ro="" |
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179 ;; |
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180 t) |
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181 # use a more tiny layout |
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182 _tiny="yes" |
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183 ;; |
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184 T) # extra tiny layout |
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185 _tiny="extra" |
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186 ;; |
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187 u) |
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188 # do not mount newly created datasets |
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189 _zfsopts="${_zfsopts} -u" |
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190 ;; |
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191 s) |
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192 # create also a dataset for freebsd-update data |
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193 _fbsdupdate="yes" |
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179
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194 ;; |
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195 \?|:) |
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196 return 2; |
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197 ;; |
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198 esac |
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199 done |
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200 shift $((OPTIND-1)) |
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201 OPTIND=1 |
| 73 | 202 |
| 203 _pds="$1" | |
| 204 if [ -z "${_pds}" ]; then | |
| 205 echo "ERROR: no parent dataset given" >&2 | |
| 206 return 2 | |
| 207 fi | |
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208 _pmp=$(zfs list -H -o mountpoint -t filesystem "${_pds}" 2>/dev/null) || { echo "ERROR: dataset \`${_pds}' does not exist" >&2; return 1; } |
| 73 | 209 case "${_pmp}" in |
| 210 none) | |
| 211 echo "ERROR: dataset \`${_pds}' has no mountpoint" >&2 | |
| 212 return 1 | |
| 213 ;; | |
| 214 legacy) | |
| 215 echo "ERROR: dataset \`${_pds}' has a \`${_mp}' mountpoint" >&2 | |
| 216 return 1 | |
| 217 ;; | |
| 218 *) | |
| 219 # VOID | |
| 220 ;; | |
| 221 esac | |
| 222 _cds="$2" | |
| 223 if [ -z "${_cds}" ]; then | |
| 224 echo "ERROR: no child dataset given" >&2 | |
| 225 return 2 | |
| 226 fi | |
| 227 _ds="${_pds}/${_cds}" | |
| 228 echo "Resulting new root dataset is \`${_ds}' at mountpoint \`${_pmp}/${_cds}'" | |
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229 if zfs list -H -o mountpoint -t filesystem "${_ds}" >/dev/null 2>/dev/null; then |
| 73 | 230 echo "ERROR: dataset \`${_ds}' does already exist" >&2 |
| 231 return 1 | |
| 232 fi | |
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233 |
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234 # |
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235 # NOTE: For BEs these directory will be *excluded* from the BE |
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236 # |
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237 # /tmp |
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238 # /usr/home |
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239 # /usr/ports |
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240 # /usr/src |
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241 # /var/audit |
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242 # /var/crash |
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243 # /var/log |
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244 # /var/mail |
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245 # /var/tmp |
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246 # |
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247 zfs create ${_zfsopts} ${_zfsnoauto} -o atime=off "${_ds}" |
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248 zfs create ${_zfsopts} ${_zfsnoauto} -o sync=disabled -o setuid=off "${_ds}/tmp" |
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249 if [ "${_tiny}" != "extra" ]; then |
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250 if [ "${_tiny}" = "yes" ]; then |
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251 zfs create ${_zfsopts} -o canmount=off "${_ds}/usr" |
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252 else |
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253 zfs create ${_zfsopts} ${_zfsnoauto} "${_ds}/usr" |
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254 fi |
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255 zfs create ${_zfsopts} ${_zfsnoauto} -o setuid=off "${_ds}/usr/home" |
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256 zfs create ${_zfsopts} ${_zfsnoauto} "${_ds}/usr/local" |
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257 fi |
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258 if [ \( "${_tiny}" = "yes" \) -o \( "${_tiny}" = "extra" \) ]; then |
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259 zfs create ${_zfsopts} -o canmount=off "${_ds}/var" |
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260 else |
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261 zfs create ${_zfsopts} ${_zfsnoauto} "${_ds}/var" |
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262 fi |
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263 if [ "${_tiny}" != "extra" ]; then |
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264 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off "${_ds}/var/audit" |
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265 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off "${_ds}/var/cache" |
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266 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o primarycache=metadata -o compression=off "${_ds}/var/cache/pkg" |
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267 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o compression=off "${_ds}/var/crash" |
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268 fi |
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269 if [ "$_fbsdupdate" = "yes" ]; then |
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270 if [ \( "${_tiny}" = "yes" \) -o \( "${_tiny}" = "extra" \) ]; then |
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271 zfs create ${_zfsopts} -o canmount=off -o exec=off -o setuid=off "${_ds}/var/db" |
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272 else |
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273 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off "${_ds}/var/db" |
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274 fi |
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275 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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276 fi |
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277 zfs create ${_zfsopts} ${_zfsnoauto} ${_varempty_ro} -o exec=off -o setuid=off "${_ds}/var/empty" |
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278 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o primarycache=metadata "${_ds}/var/log" |
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279 zfs create ${_zfsopts} ${_zfsnoauto} -o exec=off -o setuid=off -o atime=on "${_ds}/var/mail" |
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280 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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281 zfs create ${_zfsopts} ${_zfsnoauto} -o sync=disabled -o setuid=off "${_ds}/var/tmp" |
| 73 | 282 } |
| 283 | |
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284 |
| 73 | 285 # |
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286 # "populate" -- populate the datasets with content from a FreeBSD base.txz |
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287 # |
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288 # command_populate mountpoint basetxz |
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289 # |
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290 command_populate() { |
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291 # MOUNTPOINT -- base.txz |
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292 local _mp _basetxz |
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293 |
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294 _mp="$1" |
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295 _basetxz="$2" |
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296 |
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297 if [ -z "${_mp}" ]; then |
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298 echo "ERROR: no mountpoint given" >&2 |
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299 return 2 |
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300 fi |
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301 if [ -z "${_basetxz}" ]; then |
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302 echo "ERROR: no base.txz given" >&2 |
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303 return 2 |
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304 fi |
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305 if [ ! -d "${_mp}" ]; then |
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306 echo "ERROR: mountpoint \`${_mp}' does not exist" >&2 |
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307 return 1 |
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308 fi |
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309 if [ ! -r "${_basetxz}" ]; then |
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310 echo "ERROR: file \`${_basetxz}' is not readable" >&2 |
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311 return 1 |
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312 fi |
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313 |
|
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314 # |
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315 # Handle /var/empty separately later: could be already there and |
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316 # mounted read-only. |
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317 # |
|
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318 tar -C "${_mp}" --exclude=./var/empty -xJp -f "${_basetxz}" || { echo "ERROR: tar encountered errors" >&2; return 1; } |
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319 if [ -d "${_mp}/var/empty" ]; then |
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320 # |
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321 # If /var/empty exists already try to extract with changing the |
|
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322 # flags (e.g. `schg'). But be ignore errors here. |
|
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323 # |
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324 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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325 else |
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326 # Just extract /var/empty normally |
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327 tar -C "${_mp}" -xJp -f "${_basetxz}" ./var/empty || { echo "ERROR: tar encountered errors" >&2; return 1; } |
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328 fi |
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329 |
|
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330 find "${_mp}/boot" -type f -delete |
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331 } |
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332 |
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333 |
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334 # |
|
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335 # "hostid" -- print a proposal for hostid/hostuuid settings in a jail |
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336 # |
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337 # command_hostid |
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338 # |
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339 command_hostid() { |
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340 # |
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341 # hostid and hostuuid should be set (at least for consistency ressons) |
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342 # in vnet jails (see /etc/rc.d/hostid and /etc/rc.d/hostid_save). |
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343 # They can be set in the jail.conf. |
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344 # Print one here that can be pasted into the jail.conf if needed. |
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345 # |
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346 # hostid and hostuuid for non-vnet jails are inherited from the parent/host. |
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347 # |
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348 # See also /etc/rc.d/hostid and /etc/rc.d/hostid_save. |
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349 # |
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350 local _new_hostuuid _new_hostid |
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351 _new_hostuuid="$(uuidgen)" |
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352 _new_hostid="$(echo -n ${_new_hostuuid} | /sbin/md5)" |
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353 _new_hostid="0x${_new_hostid%%????????????????????????}" |
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354 |
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355 echo "Proposed hostuuid/hostid:" |
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356 echo " host.hostuuid = \"${_new_hostuuid}\";" |
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357 echo " host.hostid = $((_new_hostid));" |
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358 #echo " host.hostid = ${_new_hostid};" |
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359 } |
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360 |
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361 |
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362 # |
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363 # "configure" -- configure the mountpoint |
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364 # |
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365 # command_configure mountpoint |
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366 # |
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367 command_configure() { |
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368 # mountpoint |
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369 local _mp |
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370 |
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371 local _pcl |
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372 |
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373 _mp="$1" |
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374 |
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375 if [ -z "${_mp}" ]; then |
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376 echo "ERROR: no mountpoint given" >&2 |
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377 return 2 |
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378 fi |
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379 if [ ! -d "${_mp}" ]; then |
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380 echo "ERROR: mountpoint \`${_mp}' does not exist" >&2 |
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381 return 1 |
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382 fi |
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383 |
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384 # Deactive the by default empty root password |
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385 pw -R "${_mp}" usermod -w no -n root |
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386 |
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387 if [ -f "${_mp}/etc/defaults/rc.conf" ]; then |
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388 |
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389 sysrc -R "${_mp}" sendmail_enable=NONE |
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390 sysrc -R "${_mp}" clear_tmp_enable=YES |
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391 sysrc -R "${_mp}" clear_tmp_X=NO |
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392 sysrc -R "${_mp}" syslogd_flags=-ss |
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393 sysrc -R "${_mp}" bsdstats_enable=NO # no automatic BSD stats when booting |
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394 else |
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395 echo "WARNING: No \"${_mp}/etc/defaults/rc.conf\": not configuring \"rc.conf\"" |
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396 fi |
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397 |
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398 if [ -f "${_mp}/usr/share/zoneinfo/Europe/Berlin" ]; then |
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399 # Timezone to CET |
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400 if [ ! -f "${_mp}/etc/localtime" ]; then |
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401 echo "Setting timezone to Europe/Berlin" |
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402 # Handle thin jails automatically (but check expectations very strictly) |
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403 if [ \( -L "${_mp}/etc" \) -a \( "$(readlink "${_mp}/etc")" = "skeleton/etc" \) ]; then |
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404 ln -s ../../usr/share/zoneinfo/Europe/Berlin "${_mp}/etc/localtime" |
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405 else |
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406 ln -s ../usr/share/zoneinfo/Europe/Berlin "${_mp}/etc/localtime" |
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407 fi |
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408 echo "Europe/Berlin" > "${_mp}/var/db/zoneinfo" |
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409 else |
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410 echo "WARNING: \"${_mp}/etc/localtime\" exists already -- not changed" |
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411 fi |
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222
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412 else |
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413 echo "WARNING: No timezone data file found at \"${_mp}/usr/share/zoneinfo/Europe/Berlin\": skipping timezone setup" |
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414 fi |
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221
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415 |
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224
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416 # resolv.conf |
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417 if [ ! -f "${_mp}/etc/resolv.conf" ]; then |
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418 echo "Copying the host's resolv.conf into the jail" |
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419 cp -p /etc/resolv.conf "${_mp}/etc/resolv.conf" |
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420 else |
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421 echo "WARNING: \"${_mp}/etc/resolv.conf\" exists already -- not changed" |
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422 fi |
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423 |
|
225
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424 # Call newaliases within the jail |
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425 echo "Calling \"newaliases\"" |
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426 chroot "${_mp}" /usr/bin/newaliases |
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427 |
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428 _pcl="${_mp}/etc/periodic.conf.local" |
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429 if [ ! -f "${_pcl}" ]; then |
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430 echo "Adjusting periodic.conf.local" |
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431 echo "daily_ntpd_leapfile_enable=\"NO\"" > "${_pcl}" |
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432 echo "daily_status_zfs_zpool_list_enable=\"NO\"" >> "${_pcl}" |
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433 echo "daily_status_disks_enable=\"NO\"" >> "${_pcl}" |
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434 echo "daily_status_uptime_enable=\"NO\"" >> "${_pcl}" |
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435 |
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436 echo "security_status_chkmounts_enable=\"NO\"" >> "${_pcl}" |
|
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437 |
|
228
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438 else |
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439 echo "WARNING: \"${_pcl}\" exists already -- not changed" |
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440 fi |
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441 |
|
226
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442 command_hostid |
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443 } |
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444 |
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445 |
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446 # |
|
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447 # "copy" -- ZFS copy of datasets |
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448 # |
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449 # command_copy source-dataset destination-dataset |
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450 # |
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451 command_copy() { |
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452 # source dataset -- destination dataset |
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453 local _source _dest |
|
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454 # dynamic ZFS options -- ZFS copy options |
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455 local _zfsopts _zfscopyopts |
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456 |
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457 _zfsopts="" |
|
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458 _zfscopyopts="" |
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459 while getopts "ru" _opt ; do |
|
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460 case ${_opt} in |
|
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461 r) |
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462 # Use raw datasets |
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463 _zfscopyopts="-Lec" |
|
179
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464 ;; |
|
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465 u) |
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466 # do not mount newly created datasets |
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467 _zfsopts="${_zfsopts} -u" |
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468 ;; |
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469 \?|:) |
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470 return 2; |
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471 ;; |
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472 esac |
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473 done |
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474 shift $((OPTIND-1)) |
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475 OPTIND=1 |
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476 |
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477 _source="$1" |
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478 if [ -z "${_source}" ]; then |
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479 echo "ERROR: no source dataset given" >&2 |
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480 return 2 |
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481 fi |
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482 _dest="$2" |
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483 if [ -z "${_dest}" ]; then |
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484 echo "ERROR: no source dataset given" >&2 |
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485 return 2 |
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486 fi |
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487 zfs send -R ${_zfscopyopts} -n -v "${_source}" || { echo "ERROR: ZFS operation failed in no-op mode" >&2; return 1; } |
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488 zfs send -R ${_zfscopyopts} "${_source}" | zfs receive ${_zfsopts} "${_dest}" || { echo "ERROR: ZFS operation failed" >&2; return 1; } |
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489 } |
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490 |
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491 |
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492 # |
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493 # "mount" -- recursively mount a dataset including subordinate datasets |
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494 # |
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495 # command_mount dataset mountpoint |
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496 # |
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497 command_mount() { |
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498 local _dsname _mountpoint |
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499 local _name _mp _canmount _mounted |
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500 local _rootds_mountpoint _relative_mp _real_mp |
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501 local _dry_run _mount_outside _mount_natural _mount_children_only |
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502 |
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503 _dry_run="" |
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504 _mount_outside="" |
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505 _mount_natural="" |
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506 _mount_children_only="" |
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507 while getopts "ONPnu" _opt ; do |
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508 case ${_opt} in |
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509 O) |
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510 _mount_outside="yes" |
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511 ;; |
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512 N) |
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513 _mount_natural="yes" |
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514 ;; |
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515 P) |
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516 _mount_children_only="yes" |
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517 ;; |
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518 n|u) |
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519 _dry_run="yes" |
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520 ;; |
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521 \?|:) |
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522 return 2; |
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523 ;; |
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524 esac |
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525 done |
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526 shift $((OPTIND-1)) |
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527 OPTIND=1 |
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528 |
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529 _dsname="${1-}" |
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530 _mountpoint="${2-}" |
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531 |
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532 if [ -z "${_dsname}" ]; then |
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533 echo "ERROR: no dataset given" >&2 |
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534 return 2 |
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535 fi |
|
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536 |
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537 _rootds_mountpoint="$(zfs list -H -o mountpoint -t filesystem "${_dsname}")" || \ |
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538 { echo "ERROR: root dataset does not exist" >&2; return 1; } |
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539 |
|
194
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540 if [ -z "${_mountpoint}" ]; then |
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541 if [ "${_mount_natural}" = "yes" ]; then |
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542 _mountpoint="${_rootds_mountpoint}" |
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543 else |
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544 echo "ERROR: no mountpoint given" >&2 |
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545 return 2 |
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546 fi |
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547 else |
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548 if [ "${_mount_natural}" = "yes" ]; then |
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549 echo "ERROR: Cannot have a custom mountpoint when \"-O\" is given" >&2 |
|
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550 return 2 |
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551 fi |
|
194
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552 fi |
|
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553 |
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554 # Eventually remove a trailing slash |
|
194
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|
555 _mountpoint="${_mountpoint%/}" |
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556 if [ -z "${_mountpoint}" ]; then |
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557 echo "ERROR: would mount over the root filesystem" >&2 |
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|
558 return 1 |
|
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559 fi |
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560 |
|
201
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561 zfs list -H -o name,mountpoint,canmount,mounted -s mountpoint -t filesystem -r "${_dsname}" \ |
|
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562 | { |
|
195
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563 while IFS=$'\t' read -r _name _mp _canmount _mounted ; do |
|
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564 # Skip filesystems that are already mounted |
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565 [ "${_mounted}" = "yes" ] && continue |
|
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566 # Skip filesystems that must not be mounted |
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567 [ "${_canmount}" = "off" ] && continue |
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|
568 # Mount only the children and skip the given dataset it required |
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569 [ \( "${_mount_children_only}" = "yes" \) -a \( "${_name}" = "${_dsname}" \) ] && continue |
|
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570 case "${_mp}" in |
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571 "none"|"legacy") |
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572 # Do nothing for filesystem with unset or legacy mountpoints |
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573 ;; |
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574 "${_rootds_mountpoint}"|"${_rootds_mountpoint}/"*) |
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575 # |
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576 # Handle only mountpoints that have a mountpoint below |
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577 # the parent datasets mountpoint |
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578 # |
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579 |
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580 # Determine the mountpoint relative to the parent mountpoint |
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581 _relative_mp="${_mp#${_rootds_mountpoint}}" |
| 209 | 582 # Eventually remove a trailing slash |
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583 _relative_mp="${_relative_mp%/}" |
| 209 | 584 # The real effective full mountpoint |
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585 _real_mp="${_mountpoint}${_relative_mp}" |
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586 |
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587 # |
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588 # Consistency and sanity check: computed real mountpoint must |
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589 # be equal to the configured mountpoint when no custom mountpoint |
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590 # is given. |
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591 # |
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592 if [ "${_mount_natural}" = "yes" ]; then |
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593 if [ "${_real_mp}" != "${_mp}" ]; then |
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594 echo "ERROR: mountpoint mismatch" >&2 |
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595 return 1 |
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596 fi |
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597 fi |
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598 |
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599 if [ "${_dry_run}" = "yes" ]; then |
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600 echo "Would mount ${_name} on ${_real_mp}" |
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601 else |
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602 mkdir -p "${_real_mp}" 1> /dev/null 2> /dev/null || \ |
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603 { echo "ERROR: cannot create mountpoint ${_real_mp}" >&2; return 1; } |
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604 echo "Mounting ${_name} on ${_real_mp}" |
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605 mount -t zfs "${_name}" "${_real_mp}" || return 1 |
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606 fi |
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607 ;; |
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608 *) |
|
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609 if [ "${_mount_outside}" = "yes" ]; then |
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610 if [ "${_dry_run}" = "yes" ]; then |
| 208 | 611 echo "Would mount ${_name} on configured ZFS dataset mountpoint ${_mp}" |
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612 else |
| 208 | 613 echo "Mounting ${_name} on configured ZFS dataset mountpoint ${_mp}" |
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614 zfs mount "${_name}" || return 1 |
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615 fi |
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616 else |
| 208 | 617 echo "Skipping ${_name} because its configured ZFS mountpoint is not relative to given root dataset" 2>&1 |
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618 fi |
|
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619 ;; |
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620 esac |
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621 done |
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622 |
|
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623 return 0 |
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624 } |
|
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625 } |
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626 |
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627 |
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628 # |
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629 # "umount" -- Recursively unmount ZFS datasets |
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630 # |
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631 # command_umount dataset |
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632 # |
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633 command_umount() { |
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634 local _dsname |
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635 local _name _mp _rest |
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636 local _rootds_mountpoint |
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637 |
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638 _dsname="${1-}" |
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639 [ -z "${_dsname}" ] && \ |
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640 { echo "ERROR: no dataset given" >&2; return 2; } |
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641 |
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642 # Just determine whether the given dataset name exists |
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643 _rootds_mountpoint="$(zfs list -H -o mountpoint -t filesystem "${_dsname}")" || { echo "ERROR: dataset not found" >&2; return 1; } |
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644 |
|
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645 mount -t zfs -p \ |
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646 | grep -E "^${_dsname}(/|\s)" \ |
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647 | sort -n -r \ |
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648 | { |
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649 while IFS=' '$'\t' read -r _name _mp _rest ; do |
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650 echo "Umounting ${_name} on ${_mp}" |
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651 umount "${_mp}" || return 1 |
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652 done |
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653 return 0 |
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654 } |
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655 } |
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656 |
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657 |
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658 # |
| 73 | 659 # "privs" -- adjust privileges |
| 660 # | |
| 661 # To be used when all ZFS datasets are mounted. | |
| 662 # | |
| 663 command_privs() { | |
| 664 # mountpoint | |
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665 local _mp _d _veds _get _vestatus |
| 73 | 666 |
| 667 _mp="$1" | |
| 668 if [ -z "${_mp}" ]; then | |
| 669 echo "ERROR: no mountpoint given" >&2 | |
| 670 return 2 | |
| 671 fi | |
| 672 if [ ! -d "${_mp}" ]; then | |
| 673 echo "ERROR: directory \`${_mp}' does not exist" >&2 | |
| 674 return 1 | |
| 675 fi | |
| 676 for _d in tmp var/tmp ; do | |
| 677 chmod 01777 "${_mp}/${_d}" | |
| 678 done | |
| 679 chown root:mail "${_mp}/var/mail" | |
| 680 chmod 0775 "${_mp}/var/mail" | |
|
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681 |
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682 # |
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683 # Handle <mountpoint>/var/empty specially: |
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684 # make it writeable temporarily if it is mounted read-only: |
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685 # |
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686 _vestatus="" |
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687 _veds="$(_get_dataset_for_varempty "${_mp}")" |
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688 if [ $? -eq 0 ]; then |
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689 _vestatus=$(zfs list -H -o readonly -t filesystem ${_veds} 2>/dev/null) || { echo "ERROR: cannot determine readonly status of ${_mp}/var/empty" >&2; return 1; } |
|
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690 if [ "${_vestatus}" = "on" ]; then |
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691 zfs set readonly=off ${_veds} 1> /dev/null || { echo "ERROR: cannot reset readonly-status of ${_mp}/var/empty" >&2; return 1; } |
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692 fi |
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693 fi |
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694 # Set the access rights and the file flags as given in mtree |
|
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695 chmod 0555 "${_mp}/var/empty" || { echo "WARNING: Cannot chmod on var/empty" >&2; } |
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696 chflags schg "${_mp}/var/empty" || { echo "WARNING: Cannot chflags on var/empty" >&2; } |
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697 # Reset the read-only status of the mountpoint as it was before |
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698 if [ "${_vestatus}" = "on" ]; then |
|
199
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699 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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700 fi |
| 73 | 701 } |
|
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702 |
|
74
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703 |
|
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704 # |
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705 # Global option handling |
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706 # |
|
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707 while getopts "Vh" _opt ; do |
|
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708 case ${_opt} in |
|
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709 V) |
|
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710 printf 'fjail v%s (rv:%s)\n' "${VERSION}" '@@HGREVISION@@' |
|
81
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711 exit 0 |
|
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712 ;; |
|
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713 h) |
| 75 | 714 echo "${USAGE}" |
|
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715 exit 0 |
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716 ;; |
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80
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717 \?) |
|
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718 exit 2; |
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719 ;; |
|
80
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720 *) |
|
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721 echo "ERROR: option handling failed" >&2 |
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722 exit 2 |
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723 ;; |
|
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724 esac |
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725 done |
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726 |
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727 # |
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728 # Reset the Shell's option handling system to prepare for handling |
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729 # command-local options. |
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730 # |
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731 shift $((OPTIND-1)) |
|
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732 OPTIND=1 |
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733 |
|
92
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734 test $# -gt 0 || { echo "ERROR: no command given" >&2; exit 2; } |
|
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735 |
|
72
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736 command="$1" |
|
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737 shift |
|
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738 |
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739 case "${command}" in |
| 73 | 740 datasets) |
| 741 command_datasets "$@" | |
| 742 ;; | |
|
194
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743 mount) |
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744 command_mount "$@" |
|
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745 ;; |
|
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746 umount|unmount) |
|
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747 command_umount "$@" |
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748 ;; |
| 73 | 749 privs) |
| 750 command_privs "$@" | |
| 751 ;; | |
|
76
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752 populate) |
|
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|
753 command_populate "$@" |
|
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|
754 ;; |
|
219
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755 configure) |
|
220
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756 command_configure "$@" |
|
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757 ;; |
|
226
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|
758 hostid) |
|
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759 command_hostid "$@" |
|
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760 ;; |
|
77
5aab3a28895f
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|
761 copy) |
|
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|
762 command_copy "$@" |
|
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|
763 ;; |
|
72
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764 *) |
|
76
fea2ef3ff89a
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|
765 echo "ERROR: unknown command \`${command}'" >&2 |
|
72
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766 exit 2 |
|
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|
767 ;; |
|
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|
768 esac |