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Ensure correct permission when tmpdir is the same as dirname.

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This commit is contained in:
Markus Reiter 2018-10-01 15:32:52 +02:00
parent 96e69b5a33
commit c08272ac24
2 changed files with 15 additions and 1 deletions
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2
activesupport/lib/active_support/core_ext/file/atomic.rb
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@ -29,7 +29,7 @@ class File
old_stat = if exist?(file_name)
# Get original file permissions
stat(file_name)
elsif temp_dir != dirname(file_name)
else
# If not possible, probe which are the default permissions in the
# destination directory.
probe_stat_in(dirname(file_name))

14
activesupport/test/core_ext/file_test.rb
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@ -59,6 +59,20 @@ class AtomicWriteTest < ActiveSupport::TestCase
File.unlink(file_name) rescue nil
end
def test_atomic_write_preserves_file_permissions_same_directory
Dir.mktmpdir do |temp_dir|
File.chmod 0700, temp_dir
probed_permissions = File.probe_stat_in(temp_dir).mode.to_s(8)
File.atomic_write(File.join(temp_dir, file_name), &:close)
actual_permissions = File.stat(File.join(temp_dir, file_name)).mode.to_s(8)
assert_equal actual_permissions, probed_permissions
end
end
def test_atomic_write_returns_result_from_yielded_block
block_return_value = File.atomic_write(file_name, Dir.pwd) do |file|
"Hello world!"