diff options
Diffstat (limited to 'spec/mspec/lib/mspec/runner/actions/leakchecker.rb')
-rw-r--r-- | spec/mspec/lib/mspec/runner/actions/leakchecker.rb | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/spec/mspec/lib/mspec/runner/actions/leakchecker.rb b/spec/mspec/lib/mspec/runner/actions/leakchecker.rb index 596b120d9f..71797b9815 100644 --- a/spec/mspec/lib/mspec/runner/actions/leakchecker.rb +++ b/spec/mspec/lib/mspec/runner/actions/leakchecker.rb @@ -173,7 +173,8 @@ class LeakChecker def find_threads Thread.list.find_all {|t| - t != Thread.current && t.alive? + t != Thread.current && t.alive? && + !(t.thread_variable?(:"\0__detached_thread__") && t.thread_variable_get(:"\0__detached_thread__")) } end @@ -300,6 +301,7 @@ class LeakCheckerAction end def start + disable_nss_modules @checker = LeakChecker.new end @@ -315,4 +317,61 @@ class LeakCheckerAction end end end + + private + + # This function is intended to disable all NSS modules when ruby is compiled + # against glibc. NSS modules allow the system administrator to load custom + # shared objects into all processes using glibc, and use them to customise + # the behaviour of username, groupname, hostname, etc lookups. This is + # normally configured in the file /etc/nsswitch.conf. + # These modules often do things like open cache files or connect to system + # daemons like sssd or dbus, which of course means they have open file + # descriptors of their own. This can cause the leak-checking functionality + # in this file to report that such descriptors have been leaked, and fail + # the test suite. + # This function uses glibc's __nss_configure_lookup function to override any + # configuration in /etc/nsswitch.conf, and just use the built in files/dns + # name lookup functionality (which is of course perfectly sufficient for + # running ruby/spec). + def disable_nss_modules + begin + require 'fiddle' + rescue LoadError + # Make sure it's possible to run the test suite on a ruby implementation + # which does not (yet?) have Fiddle. + return + end + + begin + libc = Fiddle.dlopen(nil) + # Older versions of fiddle don't have Fiddle::Type (and instead rely on Fiddle::TYPE_) + # Even older versions of fiddle don't have CONST_STRING, + string_type = defined?(Fiddle::TYPE_CONST_STRING) ? Fiddle::TYPE_CONST_STRING : Fiddle::TYPE_VOIDP + nss_configure_lookup = Fiddle::Function.new( + libc['__nss_configure_lookup'], + [string_type, string_type], + Fiddle::TYPE_INT + ) + rescue Fiddle::DLError + # We're not running with glibc - no need to do this. + return + end + + nss_configure_lookup.call 'passwd', 'files' + nss_configure_lookup.call 'shadow', 'files' + nss_configure_lookup.call 'group', 'files' + nss_configure_lookup.call 'hosts', 'files dns' + nss_configure_lookup.call 'services', 'files' + nss_configure_lookup.call 'netgroup', 'files' + nss_configure_lookup.call 'automount', 'files' + nss_configure_lookup.call 'aliases', 'files' + nss_configure_lookup.call 'ethers', 'files' + nss_configure_lookup.call 'gshadow', 'files' + nss_configure_lookup.call 'initgroups', 'files' + nss_configure_lookup.call 'networks', 'files dns' + nss_configure_lookup.call 'protocols', 'files' + nss_configure_lookup.call 'publickey', 'files' + nss_configure_lookup.call 'rpc', 'files' + end end |