native.rb in ffi-libfuse-0.1.0.rc20220550

- old
+ new

@@ -3,11 +3,10 @@
 require 'ffi'
 require_relative 'time_spec'
 
 module FFI
   class Stat
-    # Native (and naked) stat from stat.h
     # @!visibility private
     class Native < Struct
       case Platform::NAME
 
       when 'x86_64-linux'
@@ -15,34 +14,65 @@
                :st_ino,     :ino_t,
                :st_nlink,   :nlink_t,
                :st_mode,    :mode_t,
                :st_uid,     :uid_t,
                :st_gid,     :gid_t,
-               :__pad0,     :int,
+               :__pad0,     :uint,
                :st_rdev,    :dev_t,
                :st_size,    :off_t,
                :st_blksize, :blksize_t,
                :st_blocks,  :blkcnt_t,
                :st_atimespec, TimeSpec,
                :st_mtimespec, TimeSpec,
-               :st_ctimespec, TimeSpec
+               :st_ctimespec, TimeSpec,
+               :unused, [:long, 3]
 
-      when 'x65_64-darwin'
+        [['', :string], ['l', :string], ['f', :int]].each do |(prefix, ftype)|
+          native_func = "native_#{prefix}stat".to_sym
+          lib_func = "#{prefix}stat".to_sym
+          begin
+            ::FFI::Stat.attach_function native_func, lib_func, [ftype, by_ref], :int
+          rescue FFI::NotFoundError
+            # gLibc 2.31 (Ubuntu focal) does not export these functions, it maps them to __xstat variants
+            native_xfunc = "native_#{prefix}xstat".to_sym
+            lib_xfunc = "__#{prefix}xstat".to_sym
+            ::FFI::Stat.attach_function native_xfunc, lib_xfunc, [:int, ftype, by_ref], :int
+            # 1 is 64 bit versions of struct stat,  3 is 32 bit
+            ::FFI::Stat.define_singleton_method(native_func) { |file, buf| send(native_xfunc, 1, file, buf) }
+          end
+        end
+
+      when 'x86_64-darwin', 'aarch64-darwin'
+        #  man stat - this is stat with 64 bit inodes.
         layout :st_dev,       :dev_t,
-               :st_ino,       :uint32,
                :st_mode,      :mode_t,
                :st_nlink,     :nlink_t,
+               :st_ino,       :ino_t,
                :st_uid,       :uid_t,
                :st_gid,       :gid_t,
                :st_rdev,      :dev_t,
                :st_atimespec, TimeSpec,
                :st_mtimespec, TimeSpec,
                :st_ctimespec, TimeSpec,
+               :st_birthtimespec, TimeSpec,
                :st_size,      :off_t,
                :st_blocks,    :blkcnt_t,
                :st_blksize,   :blksize_t,
                :st_flags,     :uint32,
-               :st_gen,       :uint32
+               :st_gen,       :uint32,
+               :st_lspare,     :int32,
+               :st_gspare,     :int64
+
+        begin
+          # TODO: these functions are deprecated, but at least on Cataline -> Monterey the old stat functions
+          #       use the stat struct *without* 64 bit inodes, but macfuse is compiled with 64 bit inodes
+          ::FFI::Stat.attach_function :native_stat, :stat64, [:string, by_ref], :int
+          ::FFI::Stat.attach_function :native_lstat, :lstat64, [:string, by_ref], :int
+          ::FFI::Stat.attach_function :native_fstat, :fstat64, [:int, by_ref], :int
+        rescue FFI::NotFoundError
+          # these are only used in testing
+        end
+
       else
         raise NotImplementedError, "FFI::Stat not implemented for FFI::Platform #{Platform::NAME}"
       end
     end
   end