iankelling.org Git - distro-setup/blob - conflink

   1 #!/bin/bash
   2
   3 source /a/bin/errhandle/errcatch-function
   4 source /a/bin/errhandle/bash-trace-function
   5
   6 errcatch
   7
   8 m() {
   9     echo "$*"
  10     "$@"
  11 }
  12 s() { sudo "$@"; }
  13 lnf() { /a/exe/lnf "$@"; }
  14
  15
  16 shopt -s nullglob
  17 shopt -s extglob # note, already set with bash -l
  18
  19 # If we make a link back to the root, we stop going deeper into subdir_files.
  20 # This makes it so we can do subdir directories.
  21 #
  22 # Also note, under filesystem/, symlinks are expanded.
  23
  24 subdir-link-r() {
  25     local root="$1"
  26     local targets=()
  27     if [[ $2 ]]; then
  28         targets=( "$2"/!(.git|..|.) )
  29     else
  30         for f in "$1"/!(.git|..|.); do
  31             [[ -d $f ]] && targets+=("$f") ||:
  32         done
  33     fi
  34     local below="$( readlink -f "$root/..")"
  35     for path in "${targets[@]}"; do
  36         local fullpath="$(readlink -f "$path")"
  37         #e $fullpath $below # debug
  38         if [[ -f $path || $(dirname $(readlink -f "$fullpath")) == "$below" ]]; then
  39             m lnf -T "$path" "$HOME/${path#$root/}"
  40         elif [[ -d "$path" ]]; then
  41             subdir-link-r "$root" "$path"
  42         fi
  43     done
  44 }
  45
  46
  47
  48 common-file-setup() {
  49     local dir fs x bdir f dst
  50     for dir in "$@"; do
  51         fs=$dir/filesystem
  52         if [[ -e $fs && $USER == ian ]]; then
  53             # note, symlinks get resolved, not copied.
  54             m s cp -RLT --preserve=mode,timestamps $fs /
  55         fi
  56
  57         # one program so far does not work with a symlink,
  58         # so we have to use a bind mount
  59         bdir=$dir/binds
  60         if [[ -e $bdir && $USER == ian ]]; then
  61             for f in $(find $bdir -type f); do
  62                 dst=/home/ian/${f##$bdir}
  63                 if [[ ! -e $dst || $(stat -c%i $f $dst |uniq -u) ]]; then
  64                     if mountpoint -q $dst; then
  65                         s umount $dst
  66                     fi
  67                     # note: in future, may need to mkdir also
  68                     [[ -e $dst ]] || touch $dst
  69                     s mount --bind $f $dst
  70                 fi
  71             done
  72         fi
  73
  74         if [[ -e $dir/subdir_files ]]; then
  75             subdir-link-r $dir/subdir_files
  76         fi
  77         local x=( $dir/!(binds|subdir_files|filesystem|machine_specific|..|.) )
  78         (( ${#x[@]} >= 1 )) || continue
  79         m lnf ${x[@]} ~
  80     done
  81 }
  82
  83 all_dirs=({/a/c,/p/c}{,/machine_specific/$HOSTNAME})
  84 # note, we assume a group of hosts does not have the
  85 # same name as a single host, which is no problem on our scale.
  86 for x in /p/c/machine_specific/*.hosts; do
  87     if grep -qxF $HOSTNAME $x; then all_dirs+=( ${x%.hosts} ); fi
  88 done
  89
  90 c_dirs=(/a/c{,/machine_specific/$HOSTNAME})
  91 case $USER in
  92     ian)
  93         # p needs to go first so .ssh link is created, then config link inside it
  94         common-file-setup ${all_dirs[@]}
  95         if [[ -d /etc/bind/bind-writable ]]; then
  96             s chgrp bind /etc/bind/bind-writable
  97         fi
  98         sudo -u traci "$BASH_SOURCE"
  99         ;;
 100     traci)
 101         common-file-setup ${c_dirs[@]}
 102         ;;
 103     *)
 104         echo "$0: error: unexpected user"; exit 1
 105         ;;
 106 esac