/usr/lib/ruby/1.8/fusefs.rb is in libfusefs-ruby1.8 0.6.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 | # FuseFS.rb
#
# The ruby portion of FuseFS main library
#
# This includes helper functions, common uses, etc.
require 'fusefs_lib'
module FuseFS
@running = true
def FuseFS.run
fd = FuseFS.fuse_fd
io = IO.for_fd(fd)
while @running
IO.select([io])
FuseFS.process
end
end
def FuseFS.unmount
system("fusermount -u #{@mountpoint}")
end
def FuseFS.exit
@running = false
end
class FuseDir
def split_path(path)
cur, *rest = path.scan(/[^\/]+/)
if rest.empty?
[ cur, nil ]
else
[ cur, File.join(rest) ]
end
end
def scan_path(path)
path.scan(/[^\/]+/)
end
end
class MetaDir < FuseDir
def initialize
@subdirs = Hash.new(nil)
@files = Hash.new(nil)
end
# Contents of directory.
def contents(path)
base, rest = split_path(path)
case
when base.nil?
(@files.keys + @subdirs.keys).sort.uniq
when ! @subdirs.has_key?(base)
nil
when rest.nil?
@subdirs[base].contents('/')
else
@subdirs[base].contents(rest)
end
end
# File types
def directory?(path)
base, rest = split_path(path)
case
when base.nil?
true
when ! @subdirs.has_key?(base)
false
when rest.nil?
true
else
@subdirs[base].directory?(rest)
end
end
def file?(path)
base, rest = split_path(path)
case
when base.nil?
false
when rest.nil?
@files.has_key?(base)
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].file?(rest)
end
end
# File Reading
def read_file(path)
base, rest = split_path(path)
case
when base.nil?
nil
when rest.nil?
@files[base].to_s
when ! @subdirs.has_key?(base)
nil
else
@subdirs[base].read_file(rest)
end
end
# Write to a file
def can_write?(path)
return false unless Process.uid == FuseFS.reader_uid
base, rest = split_path(path)
case
when base.nil?
true
when rest.nil?
true
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].can_write?(rest)
end
end
def write_to(path,file)
base, rest = split_path(path)
case
when base.nil?
false
when rest.nil?
@files[base] = file
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].write_to(rest,file)
end
end
# Delete a file
def can_delete?(path)
return false unless Process.uid == FuseFS.reader_uid
base, rest = split_path(path)
case
when base.nil?
false
when rest.nil?
@files.has_key?(base)
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].can_delete?(rest)
end
end
def delete(path)
base, rest = split_path(path)
case
when base.nil?
nil
when rest.nil?
# Delete it.
@files.delete(base)
when ! @subdirs.has_key?(base)
nil
else
@subdirs[base].delete(rest)
end
end
# Make a new directory
def can_mkdir?(path)
return false unless Process.uid == FuseFS.reader_uid
base, rest = split_path(path)
case
when base.nil?
false
when rest.nil?
! (@subdirs.has_key?(base) || @files.has_key?(base))
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].can_mkdir?(rest)
end
end
def mkdir(path,dir=nil)
base, rest = split_path(path)
case
when base.nil?
false
when rest.nil?
dir ||= MetaDir.new
@subdirs[base] = dir
true
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].mkdir(rest,dir)
end
end
# Delete an existing directory.
def can_rmdir?(path)
return false unless Process.uid == FuseFS.reader_uid
base, rest = split_path(path)
case
when base.nil?
false
when rest.nil?
@subdirs.has_key?(base)
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].can_rmdir?(rest)
end
end
def rmdir(path)
base, rest = split_path(path)
dir ||= MetaDir.new
case
when base.nil?
false
when rest.nil?
@subdirs.delete(base)
true
when ! @subdirs.has_key?(base)
false
else
@subdirs[base].rmdir(rest,dir)
end
end
end
end
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