[PATCH] uniform POLLRDHUP handling between epoll and poll/select

As reported by Michael Kerrisk, POLLRDHUP handling was not consistent
between epoll and poll/select, since in epoll it was unmaskeable.  This
patch brings uniformity in POLLRDHUP handling.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 242fe1a..1b4491c 100644 (file)
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -599,7 +599,7 @@ sys_epoll_ctl(int epfd, int op, int fd, struct epoll_event __user *event)
        switch (op) {
        case EPOLL_CTL_ADD:
                if (!epi) {
-                       epds.events |= POLLERR | POLLHUP | POLLRDHUP;
+                       epds.events |= POLLERR | POLLHUP;
 
                        error = ep_insert(ep, &epds, tfile, fd);
                } else
@@ -613,7 +613,7 @@ sys_epoll_ctl(int epfd, int op, int fd, struct epoll_event __user *event)
                break;
        case EPOLL_CTL_MOD:
                if (epi) {
-                       epds.events |= POLLERR | POLLHUP | POLLRDHUP;
+                       epds.events |= POLLERR | POLLHUP;
                        error = ep_modify(ep, epi, &epds);
                } else
                        error = -ENOENT;