tree cea05e7086314d200886fd3b76867e8fb5e6574b
parent 754421c8cab1a568be844a7069fe04c1cf6391b8
author Al Viro <viro@zeniv.linux.org.uk> 1335493760 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1338569927 -0400

new helpers: {clear,test,test_and_clear}_restore_sigmask()

helpers parallel to set_restore_sigmask(), used in the next commits

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>