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linux-sg2042/net/ipv4
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Davide Libenzi f348d70a32 [PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications 
Implement the half-closed devices notifiation, by adding a new POLLRDHUP
(and its alias EPOLLRDHUP) bit to the existing poll/select sets.  Since the
existing POLLHUP handling, that does not report correctly half-closed
devices, was feared to be changed, this implementation leaves the current
POLLHUP reporting unchanged and simply add a new bit that is set in the few
places where it makes sense.  The same thing was discussed and conceptually
agreed quite some time ago:

http://lkml.org/lkml/2003/7/12/116

Since this new event bit is added to the existing Linux poll infrastruture,
even the existing poll/select system calls will be able to use it.  As far
as the existing POLLHUP handling, the patch leaves it as is.  The
pollrdhup-2.6.16.rc5-0.10.diff defines the POLLRDHUP for all the existing
archs and sets the bit in the six relevant files.  The other attached diff
is the simple change required to sys/epoll.h to add the EPOLLRDHUP
definition.

There is "a stupid program" to test POLLRDHUP delivery here:

 http://www.xmailserver.org/pollrdhup-test.c

It tests poll(2), but since the delivery is same epoll(2) will work equally.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2006-03-25 08:22:56 -08:00
..
ipvs [NET]: sem2mutex part 2 2006-03-20 22:35:41 -08:00
netfilter [PATCH] s/;;/;/g 2006-03-24 07:33:24 -08:00
Kconfig [TCP] BIC: CUBIC window growth (2.0) 2006-01-03 13:10:28 -08:00
Makefile [NETFILTER]: net/ipv[46]/netfilter.c cleanups 2006-01-10 12:54:29 -08:00
af_inet.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
ah4.c [IPSEC]: Sync series - fast path 2006-03-20 19:15:29 -08:00
arp.c [IPV4] ARP: Alloc acceptance of unsolicited ARP via netdevice sysctl. 2006-03-20 22:39:47 -08:00
datagram.c [NET]: Fix sparse warnings 2005-08-29 16:01:32 -07:00
devinet.c [IPV4] ARP: Alloc acceptance of unsolicited ARP via netdevice sysctl. 2006-03-20 22:39:47 -08:00
esp4.c [IPSEC]: Sync series - fast path 2006-03-20 19:15:29 -08:00
fib_frontend.c x86: Work around compiler code generation bug with -Os 2006-01-14 22:08:28 -08:00
fib_hash.c [INET_SOCK]: Move struct inet_sock & helper functions to net/inet_sock.h 2006-01-03 13:11:21 -08:00
fib_lookup.h [IPV4]: Prepare FIB core for RCU. 2005-08-29 16:08:31 -07:00
fib_rules.c [IPV4]: Add fib rule netlink notifications 2006-03-23 01:16:06 -08:00
fib_semantics.c [NETLINK]: illegal use of pid in rtnetlink 2006-02-09 16:43:41 -08:00
fib_trie.c [IPV4]: fib_trie stats fix 2006-03-20 21:35:01 -08:00
icmp.c [IPV4] ICMP: Invert default for invalid icmp msgs sysctl 2006-02-13 15:36:21 -08:00
igmp.c [NET]: dev_put/dev_hold cleanup 2006-03-20 22:32:28 -08:00
inet_connection_sock.c [INET]: Fix typo in Arnaldo's connection sock compat fixups. 2006-03-20 22:52:32 -08:00
inet_diag.c [INET_DIAG]: Introduce sk_diag_fill 2006-01-09 14:56:56 -08:00
inet_hashtables.c [PATCH] s/;;/;/g 2006-03-24 07:33:24 -08:00
inet_timewait_sock.c [TWSK]: Introduce struct timewait_sock_ops 2006-01-03 13:10:54 -08:00
inetpeer.c [NET]: Change some "if (x) BUG();" to "BUG_ON(x);" 2006-01-09 14:16:18 -08:00
ip_forward.c [IPV4]: Remove some dead code from ip_forward() 2005-08-29 16:03:06 -07:00
ip_fragment.c [NET]: Endian-annotate struct iphdr 2006-01-06 13:24:29 -08:00
ip_gre.c [XFRM]: Fix SNAT-related crash in xfrm4_output_finish 2006-02-15 15:10:22 -08:00
ip_input.c [NETFILTER]: Keep conntrack reference until IPsec policy checks are done 2006-01-07 12:57:36 -08:00
ip_options.c [PATCH] capable/capability.h (net/) 2006-01-11 18:42:14 -08:00
ip_output.c [TCP]: Do not use inet->id of global tcp_socket when sending RST. 2006-03-22 14:27:59 -08:00
ip_sockglue.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
ipcomp.c [NET] sem2mutex: net/ 2006-03-20 22:33:17 -08:00
ipconfig.c [NET]: Convert RTNL to mutex. 2006-03-20 22:23:58 -08:00
ipip.c [XFRM]: Fix SNAT-related crash in xfrm4_output_finish 2006-02-15 15:10:22 -08:00
ipmr.c [NET]: dev_put/dev_hold cleanup 2006-03-20 22:32:28 -08:00
multipath.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
multipath_drr.c [IPV4]: possible cleanups 2005-08-29 15:33:20 -07:00
multipath_random.c [IPV4]: Multipath modules need a license to prevent kernel tainting. 2005-06-13 14:29:06 -07:00
multipath_rr.c [IPV4]: Multipath modules need a license to prevent kernel tainting. 2005-06-13 14:29:06 -07:00
multipath_wrandom.c [IPV4] multipath_wrandom: Fix softirq-unsafe spin lock usage 2006-02-02 16:59:16 -08:00
netfilter.c [NETFILTER]: Fix xfrm lookup after SNAT 2006-02-15 01:34:23 -08:00
proc.c [PATCH] percpu data: only iterate over possible CPUs 2006-02-05 11:06:51 -08:00
protocol.c [TCP]: Move the tcp sock states to net/tcp_states.h 2005-08-29 15:41:54 -07:00
raw.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
route.c [IPV4]: Fix garbage collection of multipath route entries 2006-02-23 16:10:52 -08:00
syncookies.c [ICSK]: Rename struct tcp_func to struct inet_connection_sock_af_ops 2006-01-03 13:10:38 -08:00
sysctl_net_ipv4.c [TCP]: sysctl to allow TCP window > 32767 sans wscale 2006-03-20 22:40:29 -08:00
tcp.c [PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications 2006-03-25 08:22:56 -08:00
tcp_bic.c [TCP] BIC: spelling and whitespace 2006-01-03 13:10:27 -08:00
tcp_cong.c [TCP]: less inline's 2006-01-03 16:03:49 -08:00
tcp_cubic.c [TCP] cubic: use Newton-Raphson 2006-01-03 13:11:09 -08:00
tcp_diag.c [INET_DIAG]: Move the tcp_diag interface to the proper place 2005-08-29 15:57:54 -07:00
tcp_highspeed.c [TCP]: tcp_highspeed: fix AIMD table out-of-bounds access 2006-03-12 20:39:39 -08:00
tcp_htcp.c [TCP] H-TCP: Better time accounting 2006-03-20 22:23:10 -08:00
tcp_hybla.c [TCP]: fix congestion window update when using TSO deferal 2005-11-10 16:53:30 -08:00
tcp_input.c [TCP] mtu probing: move tcp-specific data out of inet_connection_sock 2006-03-20 21:32:58 -08:00
tcp_ipv4.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
tcp_minisocks.c [IPV6]: Introduce inet6_timewait_sock 2006-01-03 13:10:47 -08:00
tcp_output.c [TCP]: sysctl to allow TCP window > 32767 sans wscale 2006-03-20 22:40:29 -08:00
tcp_scalable.c [TCP]: add tcp_slow_start helper 2005-11-10 17:07:24 -08:00
tcp_timer.c [TCP]: MTU probing 2006-03-20 17:53:41 -08:00
tcp_vegas.c [TCP] tcp_vegas: Fix slow start 2006-01-04 13:59:32 -08:00
tcp_westwood.c [INET_DIAG]: Rename tcp_diag.[ch] to inet_diag.[ch] 2005-08-29 15:57:48 -07:00
udp.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
xfrm4_input.c [IPV4/6]: Netfilter IPsec input hooks 2006-01-07 12:57:31 -08:00
xfrm4_output.c [XFRM]: Fix SNAT-related crash in xfrm4_output_finish 2006-02-15 15:10:22 -08:00
xfrm4_policy.c [IPSEC]: Use TOS when doing tunnel lookups 2006-02-23 16:19:26 -08:00
xfrm4_state.c [XFRM]: IPsec tunnel wildcard address support 2006-01-13 14:34:36 -08:00
xfrm4_tunnel.c [NET] sem2mutex: net/ 2006-03-20 22:33:17 -08:00