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26df6d1340
linux/arch/ia64/include/asm
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hyc@symas.com 26df6d1340 tty: Add EXTPROC support for LINEMODE 
This patch is against the 2.6.34 source.

Paraphrased from the 1989 BSD patch by David Borman @ cray.com:

     These are the changes needed for the kernel to support
     LINEMODE in the server.

     There is a new bit in the termios local flag word, EXTPROC.
     When this bit is set, several aspects of the terminal driver
     are disabled.  Input line editing, character echo, and mapping
     of signals are all disabled.  This allows the telnetd to turn
     off these functions when in linemode, but still keep track of
     what state the user wants the terminal to be in.

     New ioctl:
         TIOCSIG         Generate a signal to processes in the
                         current process group of the pty.

     There is a new mode for packet driver, the TIOCPKT_IOCTL bit.
     When packet mode is turned on in the pty, and the EXTPROC bit
     is set, then whenever the state of the pty is changed, the
     next read on the master side of the pty will have the TIOCPKT_IOCTL
     bit set.  This allows the process on the server side of the pty
     to know when the state of the terminal has changed; it can then
     issue the appropriate ioctl to retrieve the new state.

Since the original BSD patches accompanied the source code for telnet
I've left that reference here, but obviously the feature is useful for
any remote terminal protocol, including ssh.

The corresponding feature has existed in the BSD tty driver since 1989.
For historical reference, a good copy of the relevant files can be found
here:

http://anonsvn.mit.edu/viewvc/krb5/trunk/src/appl/telnet/?pathrev=17741

Signed-off-by: Howard Chu <hyc@symas.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10 13:47:39 -07:00
..
native ia64/pv_ops: paravirtualize gate.S. 2009-03-26 11:01:46 -07:00
sn tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
uv sgi-gru: add macros for using the UV hub to send interrupts 2009-04-02 19:05:05 -07:00
xen xen: Remove unnecessary arch specific xen irq functions. 2010-02-18 17:17:58 -08:00
acpi-ext.h ACPI: remove private acpica headers from driver files 2008-12-31 01:15:22 -05:00
acpi.h ACPI: delete the "acpi=ht" boot option 2010-03-14 20:58:38 -04:00
agp.h agp: kill phys_to_gart() and gart_to_phys() 2009-08-03 09:05:00 +01:00
asm-offsets.h kbuild: move asm-offsets.h to include/generated 2009-12-12 13:08:14 +01:00
asmmacro.h Rename .data..patch.XXX to .data..patch.XXX. 2010-03-03 11:25:59 +01:00
atomic.h atomic_t: Cast to volatile when accessing atomic variables 2010-05-17 07:57:27 -07:00
auxvec.h
bitops.h bitops: Optimize hweight() by making use of compile-time evaluation 2010-04-06 15:52:11 -07:00
bitsperlong.h asm-generic: introduce asm/bitsperlong.h 2009-06-11 21:02:14 +02:00
break.h ia64/xen: reserve "break" numbers used for xen hypercalls. 2008-10-17 09:52:52 -07:00
bug.h
bugs.h
byteorder.h byteorder: make swab.h include asm/swab.h like a regular header 2009-01-14 19:56:50 -08:00
cache.h Rename .data.read_mostly to .data..read_mostly. 2010-03-03 11:26:00 +01:00
cacheflush.h block: add helpers to run flush_dcache_page() against a bio and a request's pages 2009-11-26 09:16:19 +01:00
checksum.h
compat.h improve sys_newuname() for compat architectures 2010-03-12 15:52:32 -08:00
cpu.h
cputime.h cputime: Optimize jiffies_to_cputime(1) 2009-08-03 14:48:36 +02:00
current.h
cyclone.h
delay.h
device.h Driver Core: Add platform device arch data V3 2009-07-22 00:28:38 +02:00
div64.h
dma-mapping.h dma-mapping: fix off-by-one error in dma_capable() 2009-12-16 07:20:12 -08:00
dma.h
dmi.h include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
elf.h elf coredump: replace ELF_CORE_EXTRA_* macros by functions 2010-03-06 11:26:45 -08:00
emergency-restart.h
errno.h
esi.h
fb.h
fcntl.h
fpswa.h
fpu.h Revert "Neither asm/types.h nor linux/types.h is required for arch/ia64/include/asm/fpu.h" 2009-07-17 06:35:05 -07:00
ftrace.h [IA64] sanity in #include files. Move fnptr to types.h 2010-01-06 15:52:35 -08:00
futex.h
gcc_intrin.h [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
hardirq.h preempt-count: force hardirq-count to max of 10 2009-02-12 11:19:05 -05:00
hpsim.h
hugetlb.h
hw_irq.h [IA64] preallocate IA64_IRQ_MOVE_VECTOR 2009-12-14 16:03:36 -08:00
ia64regs.h
idle.h [IA64] xen_domu_defconfig: fix build issues/warnings 2009-05-05 11:43:13 -07:00
intel_intrin.h
intrinsics.h Pull pvops into release branch 2009-03-31 14:25:08 -07:00
io.h implement early_io{re,un}map for ia64 2009-12-16 02:45:10 +00:00
ioctl.h
ioctls.h tty: Add EXTPROC support for LINEMODE 2010-08-10 13:47:39 -07:00
iommu.h intel-iommu: Fix one last ia64 build problem in Pass Through Support 2009-06-05 20:49:53 +01:00
iosapic.h
ipcbuf.h
irq_regs.h
irq.h ia64: move nr-irqs.h to include/generated 2009-12-12 13:08:14 +01:00
Kbuild [IA64] unexport fpswa.h 2009-06-15 14:32:54 -07:00
kdebug.h
kexec.h kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE 2008-08-15 08:35:42 -07:00
kmap_types.h kmap_types: make most arches use generic header file 2009-06-16 19:47:51 -07:00
kprobes.h [IA64] sanity in #include files. Move fnptr to types.h 2010-01-06 15:52:35 -08:00
kregs.h [IA64] Fix annoying IA64_TR_ALLOC_MAX message. 2008-10-17 13:47:53 -07:00
kvm_host.h KVM: Remove unnecessary divide operations 2010-08-01 10:47:30 +03:00
kvm_para.h KVM: Add __KERNEL__ guards to exported headers 2009-09-10 10:46:48 +03:00
kvm.h KVM: Maintain back mapping from irqchip/pin to gsi 2009-12-03 09:32:07 +02:00
libata-portmap.h
linkage.h
local64.h arch: Implement local64_t 2010-06-09 11:12:36 +02:00
local.h
machvec_dig_vtd.h remove dma operations in struct ia64_machine_vector 2009-01-06 14:06:50 +01:00
machvec_dig.h
machvec_hpsim.h
machvec_hpzx1_swiotlb.h remove hwsw_dma_ops 2009-01-06 14:06:52 +01:00
machvec_hpzx1.h remove dma operations in struct ia64_machine_vector 2009-01-06 14:06:50 +01:00
machvec_init.h [IA64] SN specific version of dma_get_required_mask() 2009-01-15 10:42:16 -08:00
machvec_sn2.h Merge branch 'linus' into core/iommu 2009-01-16 10:09:10 +01:00
machvec_uv.h
machvec_xen.h ia64/xen: define xen machine vector for domU. 2008-10-17 10:08:56 -07:00
machvec.h Merge branch 'linus' into core/iommu 2009-01-16 10:09:10 +01:00
mc146818rtc.h
mca_asm.h
mca.h [IA64] Save I-resources to ia64_sal_os_state 2009-12-14 16:37:58 -08:00
meminit.h ia64: don't alias VMALLOC_END to vmalloc_end 2009-10-02 13:28:55 +09:00
mman.h mm: remove duplicate asm/mman.h files 2009-09-22 07:17:42 -07:00
mmu_context.h cpumask: use mm_cpumask() wrapper: ia64 2009-03-16 14:12:48 +10:30
mmu.h
mmzone.h [IA64] removing redundant ifdef 2010-05-18 14:45:52 -07:00
module.h ia64/pv_ops/bp/module: support binary patching for kernel module. 2009-03-26 11:02:51 -07:00
msgbuf.h
msidef.h ia64: Move the macro definitions related to MSI to one header file. 2009-03-24 11:03:12 +02:00
mutex.h
nodedata.h
numa.h hugetlb: add generic definition of NUMA_NO_NODE 2009-12-15 08:53:12 -08:00
page.h [IA64] increase ia64 static per cpu area 2010-07-27 14:55:12 -07:00
pal.h [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
param.h
paravirt_patch.h ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops. 2009-03-26 11:02:31 -07:00
paravirt_privop.h [IA64] fix allmodconfig compilation breakage. 2009-04-20 09:46:29 -07:00
paravirt.h ia64/pv_ops: implement binary patching optimization for native. 2009-03-26 11:02:42 -07:00
parport.h
patch.h
pci.h pci-dma: add linux/pci-dma.h to linux/pci.h 2010-03-12 15:52:42 -08:00
percpu.h Merge branch 'for-35' of git://repo.or.cz/linux-kbuild 2010-06-01 08:55:52 -07:00
perfmon_default_smpl.h tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
perfmon.h
pgalloc.h mm: Pass virtual address to [__]p{te,ud,md}_free_tlb() 2009-07-27 12:10:38 -07:00
pgtable.h MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself 2010-02-20 16:41:46 +00:00
poll.h
posix_types.h
processor.h [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
ptrace_offsets.h
ptrace.h ptrace: move user_enable_single_step & co prototypes to linux/ptrace.h 2010-03-12 15:52:38 -08:00
pvclock-abi.h ia64/xen: add a necessary header file to compile include/xen/interface/xen.h 2008-10-17 09:57:28 -07:00
resource.h
rse.h
rwsem.h [IA64] Replace old style lock initializer 2009-12-14 16:39:45 -08:00
sal.h [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
scatterlist.h asm-generic: remove ARCH_HAS_SG_CHAIN in scatterlist.h 2010-05-27 09:12:54 -07:00
sections.h [IA64] Put the space for cpu0 per-cpu area into .data section 2008-09-29 16:39:19 -07:00
segment.h
sembuf.h
serial.h
setup.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h signals: demultiplexing SIGTRAP signal 2008-09-23 13:26:52 +02:00
signal.h asm-generic: rename termios.h, signal.h and mman.h 2009-06-11 21:01:52 +02:00
smp.h cpumask: remove arch_send_call_function_ipi 2009-09-24 09:34:47 +09:30
socket.h net: Generalize socket rx gap / receive queue overflow cmsg 2009-10-12 13:26:31 -07:00
sockios.h
sparsemem.h
spinlock_types.h locking: Convert raw_rwlock to arch_rwlock 2009-12-14 23:55:32 +01:00
spinlock.h locking: Convert raw_rwlock functions to arch_rwlock 2009-12-14 23:55:32 +01:00
stat.h
statfs.h IA64: Use <asm-generic/statfs.h> 2008-09-04 09:46:13 +01:00
string.h
swab.h headers_check fix: ia64, swab.h 2009-02-01 11:01:25 +05:30
swiotlb.h swiotlb: Remove duplicate swiotlb_force extern declarations 2009-11-15 09:03:10 +01:00
sync_bitops.h ia64/xen: introduce sync bitops which is necessary for ia64/xen support. 2008-10-17 09:53:33 -07:00
syscall.h [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
system.h [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
termbits.h tty: Add EXTPROC support for LINEMODE 2010-08-10 13:47:39 -07:00
termios.h
thread_info.h add descriptive comment for TIF_MEMDIE task flag declaration. 2010-05-14 11:13:27 +02:00
timex.h ia64/pv_ops/pv_time_ops: add sched_clock hook. 2009-03-26 10:50:42 -07:00
tlb.h [IA64] __per_cpu_idtrs[] is a memory hog 2010-01-07 16:10:57 -08:00
tlbflush.h
topology.h numa: ia64: use generic percpu var numa_node_id() implementation 2010-05-27 09:12:57 -07:00
types.h [IA64] move fnptr definition inside #ifdef __KERNEL__ 2010-01-08 10:53:28 -08:00
uaccess.h
ucontext.h
unaligned.h
uncached.h
unistd.h [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
unwind.h
user.h
ustack.h
vga.h
xor.h