iankelling.org Git - distro-setup/blob - mount-latest-remote

   1 #!/bin/bash
   2 # I, Ian Kelling, follow the GNU license recommendations at
   3 # https://www.gnu.org/licenses/license-recommendations.en.html. They
   4 # recommend that small programs, < 300 lines, be licensed under the
   5 # Apache License 2.0. This file contains or is part of one or more small
   6 # programs. If a small program grows beyond 300 lines, I plan to switch
   7 # its license to GPL.
   8
   9 # Copyright 2024 Ian Kelling
  10
  11 # Licensed under the Apache License, Version 2.0 (the "License");
  12 # you may not use this file except in compliance with the License.
  13 # You may obtain a copy of the License at
  14
  15 #     http://www.apache.org/licenses/LICENSE-2.0
  16
  17 # Unless required by applicable law or agreed to in writing, software
  18 # distributed under the License is distributed on an "AS IS" BASIS,
  19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20 # See the License for the specific language governing permissions and
  21 # limitations under the License.
  22
  23
  24
  25 # usage: HOST [mount-latest-subvol args]
  26
  27 set -e; . /usr/local/lib/bash-bear; set +e
  28
  29 readonly this_file; this_file="$(readlink -f -- "${BASH_SOURCE[0]}")";
  30 script_dir=${this_file%/*}
  31
  32 if (( ! $# )); then
  33   echo "mount-latest-remote: error: a host argument"
  34   exit 1
  35 fi
  36
  37 tg="$1"
  38 shift
  39
  40 $script_dir/install-my-scripts
  41 cd /usr/local
  42
  43 ecode=0
  44
  45 # exit code run
  46 er() {
  47   local ret=0
  48   "$@" || ret=$?
  49   if (( ret )); then
  50     echo "$0: failed command: $*"
  51   fi
  52   if (( ret > ecode )); then
  53     ecode=$ret
  54   fi
  55 }
  56 rsynctg=$tg
  57 if [[ $tg == *:* ]]; then
  58   rsynctg="[$tg]"
  59 fi
  60 # R = relative, t = times, O = omit-dir-times, p = perms
  61 er rsync -RtOp bin/{mount-latest-subvol,check-subvol-stale} lib/bash-bear "root@$rsynctg:/usr/local" ||:
  62 # note: this can hang if we have an old nfs mount.
  63 er ssh root@$tg timeout -s 9 600 /usr/local/bin/mount-latest-subvol "$@"
  64
  65 exit $ecode