Remove use of NAME_MAX as some file systems may break it.

Author: aardvark179

src/main/java/org/truffleruby/platform/DarwinAMD64NativeConfiguration.java

@@ -369,7 +369,6 @@ public static void load(NativeConfiguration configuration, RubyContext context)
         configuration.config("platform.file.DT_SOCK", 12);
         configuration.config("platform.file.DT_UNKNOWN", 0);
         configuration.config("platform.file.AT_SYMLINK_NOFOLLOW", 32);
-        configuration.config("platform.file.NAME_MAX", 255);
         configuration.config("platform.io.SEEK_SET", 0);
         configuration.config("platform.io.SEEK_CUR", 1);
         configuration.config("platform.io.SEEK_END", 2);

src/main/java/org/truffleruby/platform/LinuxAMD64NativeConfiguration.java

@@ -394,7 +394,6 @@ public static void load(NativeConfiguration configuration, RubyContext context)
         configuration.config("platform.file.DT_SOCK", 12);
         configuration.config("platform.file.DT_UNKNOWN", 0);
         configuration.config("platform.file.AT_SYMLINK_NOFOLLOW", 256);
-        configuration.config("platform.file.NAME_MAX", 255);
         configuration.config("platform.io.SEEK_SET", 0);
         configuration.config("platform.io.SEEK_CUR", 1);
         configuration.config("platform.io.SEEK_END", 2);

src/main/java/org/truffleruby/platform/LinuxARM64NativeConfiguration.java

@@ -395,7 +395,6 @@ public static void load(NativeConfiguration configuration, RubyContext context)
         configuration.config("platform.file.DT_SOCK", 12);
         configuration.config("platform.file.DT_UNKNOWN", 0);
         configuration.config("platform.file.AT_SYMLINK_NOFOLLOW", 256);
-        configuration.config("platform.file.NAME_MAX", 255);
         configuration.config("platform.io.SEEK_SET", 0);
         configuration.config("platform.io.SEEK_CUR", 1);
         configuration.config("platform.io.SEEK_END", 2);

src/main/ruby/truffleruby/core/truffle/dir_operations.rb

@@ -20,15 +20,12 @@ module DirOperations
     DT_DIR = Truffle::Config['platform.file.DT_DIR']
     DT_UNKNOWN  = Truffle::Config['platform.file.DT_UNKNOWN']
 
-    NAME_MAX = Truffle::Config['platform.file.NAME_MAX']
-
-
     def self.readdir(dir)
       dir.__send__(:ensure_open)
       dirptr = dir.instance_variable_get(:@ptr)
       dirent = Truffle::POSIX.truffleposix_readdir(dirptr)
       if !dirent.null?
-        str = fix_entry_encoding(dir, dirent.get_string(DIRENT_NAME_OFFSET, NAME_MAX))
+        str = fix_entry_encoding(dir, dirent.get_string(DIRENT_NAME_OFFSET))
         type = (dirent + DIRENT_TYPE_OFFSET).read_uchar
         [str, type]
       else

tool/generate-native-config.rb

@@ -590,7 +590,6 @@ def constants(name)
   cg.include 'fnmatch.h'
   cg.include 'sys/stat.h'
   cg.include 'dirent.h'
-  cg.include 'limits.h'
   cg.consts %w[
     FNM_CASEFOLD FNM_DOTMATCH FNM_EXTGLOB FNM_NOESCAPE FNM_PATHNAME FNM_SYSCASE
 
@@ -606,8 +605,6 @@ def constants(name)
     DT_BLK DT_CHR DT_DIR DT_FIFO DT_LNK DT_REG DT_SOCK DT_UNKNOWN
 
     AT_SYMLINK_NOFOLLOW
-
-    NAME_MAX
   ]
 end