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-rw-r--r--activesupport/lib/active_support/cache/file_store.rb17
1 files changed, 8 insertions, 9 deletions
diff --git a/activesupport/lib/active_support/cache/file_store.rb b/activesupport/lib/active_support/cache/file_store.rb
index f7c01948b4..ab2382d98c 100644
--- a/activesupport/lib/active_support/cache/file_store.rb
+++ b/activesupport/lib/active_support/cache/file_store.rb
@@ -13,6 +13,7 @@ module ActiveSupport
attr_reader :cache_path
DIR_FORMATTER = "%03X"
+ FILENAME_MAX_SIZE = 230 # max filename size on file system is 255, minus room for timestamp and random characters appended by Tempfile (used by atomic write)
def initialize(cache_path, options = nil)
super(options)
@@ -129,15 +130,13 @@ module ActiveSupport
hash, dir_1 = hash.divmod(0x1000)
dir_2 = hash.modulo(0x1000)
fname_paths = []
- # Make sure file name is < 255 characters so it doesn't exceed file system limits.
- if fname.size <= 255
- fname_paths << fname
- else
- while fname.size <= 255
- fname_path << fname[0, 255]
- fname = fname[255, -1]
- end
- end
+
+ # Make sure file name doesn't exceed file system limits.
+ begin
+ fname_paths << fname[0...FILENAME_MAX_SIZE]
+ fname = fname[FILENAME_MAX_SIZE..-1]
+ end until fname.blank?
+
File.join(cache_path, DIR_FORMATTER % dir_1, DIR_FORMATTER % dir_2, *fname_paths)
end