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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
..
adx Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
bigsur [PATCH] Serial: Split 8250 port table (part 2) 2005-06-29 18:45:19 +01:00
cat68701 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-sh2 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cpu-sh3 [PATCH] sh: Move TRA/EXPEVT/INTEVT definitions for reuse 2006-02-01 08:53:19 -08:00
cpu-sh4 [PATCH] sh: Move TRA/EXPEVT/INTEVT definitions for reuse 2006-02-01 08:53:19 -08:00
cqreek Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dmida Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dreamcast Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ec3104 [PATCH] Serial: Split 8250 port table (part 2) 2005-06-29 18:45:19 +01:00
edosk7705 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
harp Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hd64461 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hd64465 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hp6xx Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hs7751rvoip Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mpc1211 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
overdrive Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rts7751r2d Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
saturn Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
se Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
se7300 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
se7751 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
se73180 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sh03 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sh2000 Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
snapgear Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
systemh Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
a.out.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
adc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
addrspace.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
atomic.h [PATCH] mutex subsystem, add atomic_xchg() to all arches 2006-01-09 15:59:17 -08:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h [FLS64]: generic version 2006-01-03 13:11:06 -08:00
bug.h [PATCH] remove all kernel BUGs 2005-05-01 08:59:01 -07:00
bugs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
byteorder.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cache.h [PATCH] Kill L1_CACHE_SHIFT_MAX 2006-01-08 20:13:39 -08:00
cacheflush.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
checksum.h [PATCH] misc verify_area cleanups 2005-05-01 08:59:08 -07:00
clock.h [PATCH] sh: Simplistic clock framework 2006-01-16 23:15:28 -08:00
cputime.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
current.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
delay.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
div64.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dma-mapping.h [PATCH] sh: DMA updates 2006-01-16 23:15:27 -08:00
dma.h [PATCH] sh: DMA updates 2006-01-16 23:15:27 -08:00
elf.h [PATCH] fix remaining missing includes 2005-11-07 07:53:41 -08:00
emergency-restart.h [PATCH] Add emergency_restart() 2005-07-26 14:35:41 -07:00
errno.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
fcntl.h [PATCH] Clean up struct flock64 definitions 2005-09-07 16:57:38 -07:00
fixmap.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
flat.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
floppy.h [PATCH] make some things static 2005-05-05 16:36:47 -07:00
freq.h [PATCH] sh: Simplistic clock framework 2006-01-16 23:15:28 -08:00
futex.h [PATCH] consolidate asm/futex.h 2006-01-08 20:13:39 -08:00
hardirq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hw_irq.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ide.h [PATCH] ide: move CONFIG_IDE_MAX_HWIFS into linux/ide.h 2005-11-09 22:58:07 +01:00
io.h [PATCH] remove ISA legacy functions: remove the helpers 2006-03-24 07:33:19 -08:00
io_generic.h [PATCH] sh: I/O routine cleanups and ioremap() overhaul 2006-01-16 23:15:28 -08:00
ioctl.h [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
ioctls.h [PATCH] sh/sh64: Fix bogus TIOCGICOUNT definitions 2006-02-01 08:53:20 -08:00
ipc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ipcbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq-sh7780.h [PATCH] sh: drop maskpos from make_ipr_irq(), remove duplicate irq definitions 2006-02-01 08:53:20 -08:00
irq-sh73180.h [PATCH] sh: drop maskpos from make_ipr_irq(), remove duplicate irq definitions 2006-02-01 08:53:20 -08:00
irq.h [PATCH] sh: drop maskpos from make_ipr_irq(), remove duplicate irq definitions 2006-02-01 08:53:20 -08:00
kexec.h [PATCH] sh: kexec() support 2006-01-16 23:15:27 -08:00
keyboard.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kgdb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
kmap_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linkage.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
local.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
machvec.h [PATCH] sh: I/O routine cleanups and ioremap() overhaul 2006-01-16 23:15:28 -08:00
machvec_init.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mc146818rtc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
microdev.h [PATCH] sh: SH4-202 microdev updates 2006-02-01 08:53:19 -08:00
mman.h [PATCH] add asm-generic/mman.h 2006-02-15 15:32:22 -08:00
mmu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mmu_context.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
module.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
msgbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mutex.h [PATCH] mutex subsystem, add default include/asm-*/mutex.h files 2006-01-09 15:59:19 -08:00
namei.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
numnodes.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
page.h [PATCH] sh: Drop hp690 discontig support 2005-11-07 07:53:28 -08:00
param.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pci.h [ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc... 2005-07-12 17:21:56 -04:00
percpu.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgalloc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgtable-2level.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
pgtable.h [PATCH] fix remaining missing includes 2005-11-07 07:53:41 -08:00
poll.h [PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications 2006-03-25 08:22:56 -08:00
posix_types.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
processor.h [PATCH] sh: Cleanup struct sh_cpuinfo for clock framework changes 2006-02-01 08:53:19 -08:00
ptrace.h [PATCH] sh: task_stack_page() 2006-01-12 09:08:53 -08:00
resource.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rtc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
rwsem.h [PATCH] add sem_is_read/write_locked() 2005-10-29 21:40:35 -07:00
scatterlist.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sections.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
segment.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore-helper.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
semaphore.h [PATCH] semaphore: Remove __MUTEX_INITIALIZER() 2005-10-30 17:37:27 -08:00
sembuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
serial.h [PATCH] Serial: Split 8250 port table (part 2) 2005-06-29 18:45:19 +01:00
setup.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sh_bios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmbuf.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
shmparam.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
sigcontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
siginfo.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.h [PATCH] asm/signal.h unification 2005-05-04 07:33:15 -07:00
smp.h [PATCH] smp_processor_id() cleanup 2005-06-21 18:46:13 -07:00
socket.h [NET]: Introduce SO_{SND,RCV}BUFFORCE socket options 2005-08-29 15:31:35 -07:00
sockios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
spinlock.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
spinlock_types.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
stat.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
statfs.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
string.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
system.h [PATCH] sched: add cacheflush() asm 2006-01-12 09:08:49 -08:00
termbits.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
termios.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
thread_info.h [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
timer.h [PATCH] sh: Simple timer framework 2006-01-16 23:15:28 -08:00
timex.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
tlbflush.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
topology.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
types.h [PATCH] sab: consolidate kmem_bufctl_t 2005-09-05 00:05:48 -07:00
uaccess.h [PATCH] remove verify_area(): remove verify_area() from various uaccess.h headers 2005-09-07 16:57:35 -07:00
ubc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ucontext.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unaligned.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unistd.h [PATCH] unify sys_ptrace prototype 2005-10-30 17:37:20 -08:00
user.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
watchdog.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xor.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00