usr.sbin/autofs/autofs/special_media

   1 #!/bin/sh
   2 #
   3 # $FreeBSD$
   4 #
   5
   6 # Print newline-separated list of devices available for mounting.
   7 # If there is a filesystem label - use it, otherwise use device name.
   8 print_available() {
   9         local _fstype _fstype_and_label _label _p
  10
  11         for _p in ${providers}; do
  12                 _fstype_and_label="$(fstyp -l "/dev/${_p}" 2> /dev/null)"
  13                 if [ $? -ne 0 ]; then
  14                         # Ignore devices for which we were unable
  15                         # to determine filesystem type.
  16                         continue
  17                 fi
  18
  19                 _fstype="${_fstype_and_label%% *}"
  20                 if [ "${_fstype}" != "${_fstype_and_label}" ]; then
  21                         _label="${_fstype_and_label#* }"
  22                         # Replace plus signs and slashes with minuses;
  23                         # leading plus signs have special meaning in maps,
  24                         # and multi-component keys are just not supported.
  25                         _label="$(echo ${_label} | sed 's,[+/],-,g')"
  26                         echo "${_label}"
  27                         continue
  28                 fi
  29
  30                 echo "${_p}"
  31         done
  32 }
  33
  34 # Print a single map entry.
  35 print_map_entry() {
  36         local _fstype _p
  37
  38         _fstype="$1"
  39         _p="$2"
  40
  41         case "${_fstype}" in
  42         "exfat")
  43                 if [ -f "/usr/local/sbin/mount.exfat" ]; then
  44                         echo "-mountprog=/usr/local/sbin/mount.exfat,fstype=${_fstype},nosuid   :/dev/${_p}"
  45                 else
  46                         /usr/bin/logger -p info -t "special_media[$$]" \
  47                             "Cannot mount ${_fstype} formatted device /dev/${_p}: Install sysutils/fusefs-exfat first"
  48                         exit 1
  49                 fi
  50                 ;;
  51         "ntfs")
  52                 if [ -f "/usr/local/bin/ntfs-3g" ]; then
  53                         echo "-mountprog=/usr/local/bin/ntfs-3g,fstype=${_fstype},nosuid        :/dev/${_p}"
  54                 else
  55                         /usr/bin/logger -p info -t "special_media[$$]" \
  56                             "Cannot mount ${_fstype} formatted device /dev/${_p}: Install sysutils/fusefs-ntfs first"
  57                         exit 1
  58                 fi
  59                 ;;
  60         "ext2fs" | "msdosfs")
  61                 echo "-fstype=${_fstype},nosuid,async   :/dev/${_p}"
  62                 ;;
  63         *)
  64                 echo "-fstype=${_fstype},nosuid :/dev/${_p}"
  65                 ;;
  66         esac
  67 }
  68
  69 # Determine map entry contents for the given key and print out the entry.
  70 print_one() {
  71         local _fstype _fstype_and_label _label _key _p
  72
  73         _key="$1"
  74
  75         _fstype="$(fstyp "/dev/${_key}" 2> /dev/null)"
  76         if [ $? -eq 0 ]; then
  77                 print_map_entry "${_fstype}" "${_key}"
  78                 return
  79         fi
  80
  81         for _p in ${providers}; do
  82                 _fstype_and_label="$(fstyp -l "/dev/${_p}" 2> /dev/null)"
  83                 if [ $? -ne 0 ]; then
  84                         # Ignore devices for which we were unable
  85                         # to determine filesystem type.
  86                         continue
  87                 fi
  88
  89                 _fstype="${_fstype_and_label%% *}"
  90                 if [ "${_fstype}" = "${_fstype_and_label}" ]; then
  91                         # No label, try another device.
  92                         continue
  93                 fi
  94
  95                 _label="${_fstype_and_label#* }"
  96                 # Replace plus signs and slashes with minuses;
  97                 # leading plus signs have special meaning in maps,
  98                 # and multi-component keys are just not supported.
  99                 _label="$(echo ${_label} | sed 's,[+/],-,g')"
 100                 if [ "${_label}" != "${_key}" ]; then
 101                         # Labels don't match, try another device.
 102                         continue
 103                 fi
 104
 105                 print_map_entry "${_fstype}" "${_p}"
 106         done
 107
 108         # No matching device - don't print anything, autofs will handle it.
 109 }
 110
 111 # Obtain a list of (geom-provider-name, access-count) pairs, turning this:
 112 #
 113 # z0xfffff80005085d00 [shape=hexagon,label="ada0\nr2w2e3\nerr#0\nsector=512\nstripe=0"];
 114 #
 115 # Into this:
 116 #
 117 # ada0 r2w2e3
 118 #
 119 # XXX: It would be easier to use kern.geom.conftxt instead, but it lacks
 120 #      access counts.
 121 pairs=$(sysctl kern.geom.confdot | sed -n 's/^.*hexagon,label="\([^\]*\)\\n\([^\]*\).*/\1 \2/p')
 122
 123 # Obtain a list of GEOM providers that are not already open - not mounted,
 124 # and without other GEOM class, such as gpart, attached.  In other words,
 125 # grep for "r0w0e0".  Skip providers with names containing slashes; we're
 126 # not interested in geom_label(4) creations.
 127 providers=$(echo "$pairs" | awk '$2 == "r0w0e0" && $1 !~ /\// { print $1 }')
 128
 129 if [ $# -eq 0 ]; then
 130         print_available
 131         exit 0
 132 fi
 133
 134 print_one "$1"
 135 exit 0
 136