signals: eventpoll: do not use sigprocmask()
sigprocmask() should die. None of the current callers actually
need this strange interface.
Change fs/eventpoll.c to use set_current_blocked(). This also
means we should not worry about SIGKILL/SIGSTOP.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Eric Wong <normalperson@yhbt.net>
Cc: Jason Baron <jbaron@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index deecc72..0f0f736 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1975,8 +1975,8 @@
return -EINVAL;
if (copy_from_user(&ksigmask, sigmask, sizeof(ksigmask)))
return -EFAULT;
- sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ sigsaved = current->blocked;
+ set_current_blocked(&ksigmask);
}
error = sys_epoll_wait(epfd, events, maxevents, timeout);
@@ -1993,7 +1993,7 @@
sizeof(sigsaved));
set_restore_sigmask();
} else
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+ set_current_blocked(&sigsaved);
}
return error;
@@ -2020,8 +2020,8 @@
if (copy_from_user(&csigmask, sigmask, sizeof(csigmask)))
return -EFAULT;
sigset_from_compat(&ksigmask, &csigmask);
- sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ sigsaved = current->blocked;
+ set_current_blocked(&ksigmask);
}
err = sys_epoll_wait(epfd, events, maxevents, timeout);
@@ -2038,7 +2038,7 @@
sizeof(sigsaved));
set_restore_sigmask();
} else
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+ set_current_blocked(&sigsaved);
}
return err;