introduce global lock directory (#337)

Since #292, HOMEBREW_CACHE was moved to a per-user directory. This makes
it unsuitable to store global lock files on multiple users environment.

Therefore, introducing a global lock directory `/Library/Lock.d` to
store lock files from formula lockers as well as `brew update`.

2 files changed, 2 insertions, 1 deletions

diff --git a/Library/Homebrew/test/lib/config.rb b/Library/Homebrew/test/lib/config.rb
index f6e601d52..10c3c8cd7 100644
--- a/Library/Homebrew/test/lib/config.rb
+++ b/Library/Homebrew/test/lib/config.rb
@@ -18,6 +18,7 @@ HOMEBREW_ENV_PATH      = HOMEBREW_LIBRARY_PATH.parent+"ENV"
 HOMEBREW_LOAD_PATH     = [File.expand_path("..", __FILE__), HOMEBREW_LIBRARY_PATH].join(":")
 HOMEBREW_CACHE         = HOMEBREW_PREFIX.parent+"cache"
 HOMEBREW_CACHE_FORMULA = HOMEBREW_PREFIX.parent+"formula_cache"
+HOMEBREW_LOCK_DIR      = HOMEBREW_PREFIX.parent+"locks"
 HOMEBREW_CELLAR        = HOMEBREW_PREFIX.parent+"cellar"
 HOMEBREW_LOGS          = HOMEBREW_PREFIX.parent+"logs"
 
diff --git a/Library/Homebrew/test/testing_env.rb b/Library/Homebrew/test/testing_env.rb
index b70b6cd6d..4e7089e42 100644
--- a/Library/Homebrew/test/testing_env.rb
+++ b/Library/Homebrew/test/testing_env.rb
@@ -7,7 +7,7 @@ require "formulary"
 
 # Test environment setup
 (HOMEBREW_LIBRARY/"Taps/homebrew/homebrew-core/Formula").mkpath
-%w[cache formula_cache cellar logs].each { |d| HOMEBREW_PREFIX.parent.join(d).mkpath }
+%w[cache formula_cache locks cellar logs].each { |d| HOMEBREW_PREFIX.parent.join(d).mkpath }
 
 # Test fixtures and files can be found relative to this path
 TEST_DIRECTORY = File.dirname(File.expand_path(__FILE__))