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69a6a0b38a
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Gerrit Renker 69a6a0b38a dccp: allow probing of CCID-array length 
This fixes a problem in the DCCP getsockopt() API: currently there is no way
for a user to a priori know the number of built-in CCIDs, other than trying
DCCP_SOCKOPT_AVAILABLE_CCIDS in a loop, incrementing the option length until
EINVAL is no longer returned.

This patch truncates the array to the user-provided length. No copy is made
when the length is <= 0.

Due to the length restriction in do_dccp_getsockopt() to sizeof(int), the
minimum array length remains 4, which is a reasonable default (only 3
CCIDs, CCID-2..4, are currently defined).

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12 11:47:00 -08:00
..
9p 9p connect fixes 2009-12-16 12:16:41 -05:00
802
8021q net: maintain namespace isolation between vlan and real device 2010-02-03 20:20:32 -08:00
appletalk net: appletalk: use seq_hlist_foo() helpers 2010-02-10 11:12:09 -08:00
atm net: atm: use seq_list_foo() helpers 2010-02-10 12:31:10 -08:00
ax25 net: ax25: use seq_hlist_foo() helpers 2010-02-10 11:12:09 -08:00
bluetooth net: use netdev_mc_count and netdev_mc_empty when appropriate 2010-02-12 11:38:58 -08:00
bridge bridge: Remove unused age_list 2010-02-04 20:28:48 -08:00
can can: deny filterlist access on non-CAN interfaces 2010-02-02 07:21:34 -08:00
core net: use netdev_mc_count and netdev_mc_empty when appropriate 2010-02-12 11:38:58 -08:00
dcb
dccp dccp: allow probing of CCID-array length 2010-02-12 11:47:00 -08:00
decnet
dsa
econet
ethernet llc: use dev_hard_header 2009-12-26 20:38:23 -08:00
ieee802154
ipv4 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-02-09 11:44:44 -08:00
ipv6 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-02-09 11:44:44 -08:00
ipx net: ipx: use seq_list_foo() helpers 2010-02-10 12:31:10 -08:00
irda net: use netdev_mc_count and netdev_mc_empty when appropriate 2010-02-12 11:38:58 -08:00
iucv const: constify remaining dev_pm_ops 2009-12-15 08:53:25 -08:00
key net: af_key: use seq_hlist_foo() helpers 2010-02-10 11:12:10 -08:00
lapb
llc llc: fix SAP reference counting w.r.t. socket handling 2009-12-26 20:47:23 -08:00
mac80211 net: use netdev_mc_count and netdev_mc_empty when appropriate 2010-02-12 11:38:58 -08:00
netfilter netfilter: nf_conntrack: fix hash resizing with namespaces 2010-02-08 11:18:07 -08:00
netlabel Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-12-09 19:43:33 -08:00
netlink Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-02-03 19:38:22 -08:00
netrom net: netrom: use seq_hlist_foo() helpers 2010-02-10 11:12:08 -08:00
packet net: packet: use seq_hlist_foo() helpers 2010-02-10 11:12:08 -08:00
phonet net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
rds net/rds: remove uses of NIPQUAD, use %pI4 2010-02-03 20:16:48 -08:00
rfkill
rose net: rose: use seq_hlist_foo() helpers 2010-02-10 11:12:08 -08:00
rxrpc
sched Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-02-09 11:44:44 -08:00
sctp net: constify MIB name tables 2010-01-23 01:21:27 -08:00
sunrpc Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 2010-01-08 13:55:14 -08:00
tipc tipc: Clean up configuration file 2010-01-19 14:23:57 -08:00
unix net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
wanrouter
wimax Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-12-09 19:43:33 -08:00
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2010-02-04 08:58:14 -08:00
x25 net: x25: use seq_list_foo() helpers 2010-02-10 11:12:10 -08:00
xfrm Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-01-28 06:12:38 -08:00
compat.c net: use compat helper functions in compat_sys_recvmmsg 2009-12-11 15:07:57 -08:00
Kconfig
Makefile
nonet.c
socket.c fs: no games with DCACHE_UNHASHED 2009-12-17 10:51:40 -05:00
sysctl_net.c net: spread __net_init, __net_exit 2010-01-17 19:16:02 -08:00
TUNABLE