Commit Graph

81 Commits

Author SHA1 Message Date
Gustavo Padovan 0b27a4b97c Revert "Bluetooth: Fix possible deadlock in SCO code"
This reverts commit 269c4845d5.

The commit was causing dead locks and NULL dereferences in the sco code:

 [28084.104013] BUG: soft lockup - CPU#0 stuck for 22s! [kworker/u:0H:7]
 [28084.104021] Modules linked in: btusb bluetooth <snip [last unloaded:
bluetooth]
...
 [28084.104021]  [<c160246d>] _raw_spin_lock+0xd/0x10
 [28084.104021]  [<f920e708>] sco_conn_del+0x58/0x1b0 [bluetooth]
 [28084.104021]  [<f920f1a9>] sco_connect_cfm+0xb9/0x2b0 [bluetooth]
 [28084.104021]  [<f91ef289>]
hci_sync_conn_complete_evt.isra.94+0x1c9/0x260 [bluetooth]
 [28084.104021]  [<f91f1a8d>] hci_event_packet+0x74d/0x2b40 [bluetooth]
 [28084.104021]  [<c1501abd>] ? __kfree_skb+0x3d/0x90
 [28084.104021]  [<c1501b46>] ? kfree_skb+0x36/0x90
 [28084.104021]  [<f91fcb4e>] ? hci_send_to_monitor+0x10e/0x190 [bluetooth]
 [28084.104021]  [<f91fcb4e>] ? hci_send_to_monitor+0x10e/0x190 [bluetooth]

Cc: stable@vger.kernel.org
Reported-by: Chan-yeol Park <chanyeol.park@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-12-03 16:00:04 -02:00
Frédéric Dalleau 20714bfef8 Bluetooth: Implement deferred sco socket setup
In order to authenticate and configure an incoming SCO connection, the
BT_DEFER_SETUP option was added. This option is intended to defer reply
to Connect Request on SCO sockets.
When a connection is requested, the listening socket is unblocked but
the effective connection setup happens only on first recv. Any send
between accept and recv fails with -ENOTCONN.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-12-03 15:59:58 -02:00
Frédéric Dalleau b96e9c671b Bluetooth: Add BT_DEFER_SETUP option to sco socket
This option will set the BT_SK_DEFER_SETUP bit in socket flags.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-12-03 15:59:58 -02:00
Andrei Emeltchenko fcb73338ed Bluetooth: Use %pMR in sprintf/seq_printf instead of batostr
Instead of old unsafe batostr function use %pMR print specifier
for printing Bluetooth addresses in sprintf and seq_printf
statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27 18:10:15 -03:00
Andrei Emeltchenko 6ed93dc642 Bluetooth: Use %pMR in debug instead of batostr
Instead of old unsafe batostr function use %pMR print specifier
for printing Bluetooth addresses in debug and error statements.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-09-27 18:10:00 -03:00
John W. Linville fac805f8c1 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2012-09-07 15:07:55 -04:00
Gustavo Padovan 269c4845d5 Bluetooth: Fix possible deadlock in SCO code
sco_chan_del() only has conn != NULL when called from sco_conn_del() so
just move the code from it that deal with conn to sco_conn_del().

[  120.765529]
[  120.765529] ======================================================
[  120.766529] [ INFO: possible circular locking dependency detected ]
[  120.766529] 3.5.0-rc1-10292-g3701f94-dirty #70 Tainted: G        W
[  120.766529] -------------------------------------------------------
[  120.766529] kworker/u:3/1497 is trying to acquire lock:
[  120.766529]  (&(&conn->lock)->rlock#2){+.+...}, at:
[<ffffffffa00b7ecc>] sco_chan_del+0x4c/0x170 [bluetooth]
[  120.766529]
[  120.766529] but task is already holding lock:
[  120.766529]  (slock-AF_BLUETOOTH-BTPROTO_SCO){+.+...}, at:
[<ffffffffa00b8401>] sco_conn_del+0x61/0xe0 [bluetooth]
[  120.766529]
[  120.766529] which lock already depends on the new lock.
[  120.766529]
[  120.766529]
[  120.766529] the existing dependency chain (in reverse order) is:
[  120.766529]
[  120.766529] -> #1 (slock-AF_BLUETOOTH-BTPROTO_SCO){+.+...}:
[  120.766529]        [<ffffffff8107980e>] lock_acquire+0x8e/0xb0
[  120.766529]        [<ffffffff813c19e0>] _raw_spin_lock+0x40/0x80
[  120.766529]        [<ffffffffa00b85e9>] sco_connect_cfm+0x79/0x300
[bluetooth]
[  120.766529]        [<ffffffffa0094b13>]
hci_sync_conn_complete_evt.isra.90+0x343/0x400 [bluetooth]
[  120.766529]        [<ffffffffa009d447>] hci_event_packet+0x317/0xfb0
[bluetooth]
[  120.766529]        [<ffffffffa008aa68>] hci_rx_work+0x2c8/0x890
[bluetooth]
[  120.766529]        [<ffffffff81047db7>] process_one_work+0x197/0x460
[  120.766529]        [<ffffffff810489d6>] worker_thread+0x126/0x2d0
[  120.766529]        [<ffffffff8104ee4d>] kthread+0x9d/0xb0
[  120.766529]        [<ffffffff813c4294>] kernel_thread_helper+0x4/0x10
[  120.766529]
[  120.766529] -> #0 (&(&conn->lock)->rlock#2){+.+...}:
[  120.766529]        [<ffffffff81078a8a>] __lock_acquire+0x154a/0x1d30
[  120.766529]        [<ffffffff8107980e>] lock_acquire+0x8e/0xb0
[  120.766529]        [<ffffffff813c19e0>] _raw_spin_lock+0x40/0x80
[  120.766529]        [<ffffffffa00b7ecc>] sco_chan_del+0x4c/0x170
[bluetooth]
[  120.766529]        [<ffffffffa00b8414>] sco_conn_del+0x74/0xe0
[bluetooth]
[  120.766529]        [<ffffffffa00b88a2>] sco_disconn_cfm+0x32/0x60
[bluetooth]
[  120.766529]        [<ffffffffa0093a82>]
hci_disconn_complete_evt.isra.53+0x242/0x390 [bluetooth]
[  120.766529]        [<ffffffffa009d747>] hci_event_packet+0x617/0xfb0
[bluetooth]
[  120.766529]        [<ffffffffa008aa68>] hci_rx_work+0x2c8/0x890
[bluetooth]
[  120.766529]        [<ffffffff81047db7>] process_one_work+0x197/0x460
[  120.766529]        [<ffffffff810489d6>] worker_thread+0x126/0x2d0
[  120.766529]        [<ffffffff8104ee4d>] kthread+0x9d/0xb0
[  120.766529]        [<ffffffff813c4294>] kernel_thread_helper+0x4/0x10
[  120.766529]
[  120.766529] other info that might help us debug this:
[  120.766529]
[  120.766529]  Possible unsafe locking scenario:
[  120.766529]
[  120.766529]        CPU0                    CPU1
[  120.766529]        ----                    ----
[  120.766529]   lock(slock-AF_BLUETOOTH-BTPROTO_SCO);
[  120.766529]
lock(&(&conn->lock)->rlock#2);
[  120.766529]
lock(slock-AF_BLUETOOTH-BTPROTO_SCO);
[  120.766529]   lock(&(&conn->lock)->rlock#2);
[  120.766529]
[  120.766529]  *** DEADLOCK ***

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:19:36 -03:00
Masatake YAMATO de9b9212c7 Bluetooth: Added /proc/net/sco via bt_procfs_init()
Added /proc/net/sco via bt_procfs_init().

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:03:00 -03:00
Andrei Emeltchenko 9e66463127 Bluetooth: Make connect / disconnect cfm functions return void
Return values are never used because callers hci_proto_connect_cfm
and hci_proto_disconn_cfm return void.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-08-06 15:02:58 -03:00
Gustavo Padovan 8c520a5992 Bluetooth: Remove unnecessary headers include
Most of the include were unnecessary or already included by some other
header.
Replace module.h by export.h where possible.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Gustavo Padovan fc5fef615a Bluetooth: Remove 'register' usage from the subsystem
Let the compiler chooses what is best.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:07 +03:00
Gustavo Padovan 6039aa73a1 Bluetooth: Remove most of the inline usage
Only obvious cases were left as inline, mostly oneline functions.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:07 +03:00
Gustavo Padovan be7c2b99e9 Bluetooth: Fix coding style in sco.c
Follow the net subsystem rules.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:01 +03:00
Andre Guedes b12f62cfd9 Bluetooth: Add dst_type parameter to hci_connect
This patch adds the dst_type parameter to hci_connect function.
Instead of searching the address type in advertising cache, we
use the dst_type parameter to establish LE connections.

The dst_type is ignored for BR/EDR connection establishment.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-05-09 01:40:45 -03:00
Marcel Holtmann fb3340594b Bluetooth: Restrict to one SCO listening socket
The SCO sockets are only identified by its address. So only allow one
SCO socket in listening state per address or BDADDR_ANY.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:39 -03:00
Marcel Holtmann 8ed21f7eec Bluetooth: Don't check source address in SCO bind function
Checking the source address in SCO bind function will prevent from
having an incoming and outgoing SCO socket. However that might be
needed in case of multiple SCO connections on a single device.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:38 -03:00
Lukasz Rymanowski 519e42b38e Bluetooth: Remove not needed status parameter
Sco_conn_add is called from two places and always with status = 0.

Signed-off-by: Lukasz Rymanowski <lukasz.rymanowski@tieto.com>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:37 -03:00
Marcel Holtmann 7d5d775a55 Bluetooth: Split error handling for SCO listen sockets
Split the checks for sk->sk_state and sk->sk_type for SCO listen
sockets. This makes the code more readable.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:37 -03:00
Gustavo Padovan 5c94f379c1 Bluetooth: remove unneeded declaration of sco_conn_del()
By some reason this is not needed anymore.

Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:32 -03:00
Mikel Astiz 088ce088ec Bluetooth: Remove unnecessary check
The function already fails if the given size is greater than the MTU, so
there is no need to consider that case afterwards.

Signed-off-by: Mikel Astiz <mikel.astiz.oss@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
2012-05-09 01:40:32 -03:00
David Howells 9ffc93f203 Remove all #inclusions of asm/system.h
Remove all #inclusions of asm/system.h preparatory to splitting and killing
it.  Performed with the following command:

perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *`

Signed-off-by: David Howells <dhowells@redhat.com>
2012-03-28 18:30:03 +01:00
John W. Linville 874c60bad9 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-next 2012-01-10 15:44:17 -05:00
John W. Linville 57adc1fcba Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
	drivers/net/wireless/b43/dma.c
	drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
2012-01-03 15:16:34 -05:00
Gustavo F. Padovan ee65d19e25 Bluetooth: Remove *_bh locks from SCO
Those locks are not shared between interrupt and process context anymore,
so remove the part that disable interrupts. We are still safe because
preemption is disabled.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2012-01-02 22:19:52 -02:00
Ulisses Furquim 686ebf283b Bluetooth: Make HCI call directly into SCO and L2CAP event functions
The struct hci_proto and all related register/unregister and dispatching
code was removed. HCI core code now call directly the SCO and L2CAP
event functions.

Signed-off-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-22 14:07:29 -02:00
Rusty Russell eb93992207 module_param: make bool parameters really bool (net & drivers/net)
module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

(Thanks to Joe Perches for suggesting coccinelle for 0/1 -> true/false).

Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-19 22:27:29 -05:00
Gustavo F. Padovan 09fd0de5bd Bluetooth: Replace spin_lock by mutex in hci_dev
Now we run everything in HCI in process context, so it's a better idea use
mutex instead spin_lock. The macro remains hci_dev_lock() (and I got rid
of hci_dev_lock_bh()), of course.

Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-12-18 17:07:54 -02:00
Paul Moore 6230c9b4f8 bluetooth: Properly clone LSM attributes to newly created child connections
The Bluetooth stack has internal connection handlers for all of the various
Bluetooth protocols, and unfortunately, they are currently lacking the LSM
hooks found in the core network stack's connection handlers.  I say
unfortunately, because this can cause problems for users who have have an
LSM enabled and are using certain Bluetooth devices.  See one problem
report below:

 * http://bugzilla.redhat.com/show_bug.cgi?id=741703

In order to keep things simple at this point in time, this patch fixes the
problem by cloning the parent socket's LSM attributes to the newly created
child socket.  If we decide we need a more elaborate LSM marking mechanism
for Bluetooth (I somewhat doubt this) we can always revisit this decision
in the future.

Reported-by: James M. Cape <jcape@ignore-your.tv>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-18 23:36:43 -04:00
Peter Hurley 552b0d3cb9 Bluetooth: sco: Fix lost wakeups waiting to accept socket
Fix race conditions which can cause lost wakeups (or missed signals)
while waiting to accept a sco socket connection.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-08-11 19:50:26 -03:00
Joe Perches e175072f37 Bluetooth: Rename function bt_err to bt_to_errno
Make it easier to use more normal logging styles later.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-30 18:44:08 -03:00
Luiz Augusto von Dentz 4a77708b05 Bluetooth: fix shutdown on SCO sockets
shutdown should wait for SCO link to be properly disconnected before
detroying the socket, otherwise an application using the socket may
assume link is properly disconnected before it really happens which
can be a problem when e.g synchronizing profile switch.

Signed-off-by: Luiz Augusto von Dentz <luiz.dentz-von@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-09 15:30:01 -03:00
Linus Torvalds ce8453776d Revert "Bluetooth: fix shutdown on SCO sockets"
This reverts commit f21ca5fff6.

Quoth Gustavo F. Padovan:
  "Commit f21ca5fff6 can cause a NULL
   dereference if we call shutdown in a bluetooth SCO socket and doesn't
   wait the shutdown completion to call close().  Please revert it.  I
   may have a fix for it soon, but we don't have time anymore, so revert
   is the way to go.  ;)"

Requested-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-11 18:58:16 -07:00
Luiz Augusto von Dentz f21ca5fff6 Bluetooth: fix shutdown on SCO sockets
shutdown should wait for SCO link to be properly disconnected before
detroying the socket, otherwise an application using the socket may
assume link is properly disconnected before it really happens which
can be a problem when e.g synchronizing profile switch.

Signed-off-by: Luiz Augusto von Dentz <luiz.dentz-von@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-04-18 20:11:46 -03:00
Ville Tervo 30e7627219 Bluetooth: Use ERR_PTR as return error from hci_connect
Use ERR_PTR mechanism to return error from hci_connect.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-27 17:11:29 -03:00
Gustavo F. Padovan 642745184f Bluetooth: Merge L2CAP and SCO modules into bluetooth.ko
Actually doesn't make sense have these modules built separately.
The L2CAP layer is needed by almost all Bluetooth protocols and profiles.
There isn't any real use case without having L2CAP loaded.
SCO is only essential for Audio transfers, but it is so small that we can
have it loaded always in bluetooth.ko without problems.
If you really doesn't want it you can disable SCO in the kernel config.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-14 17:27:36 -03:00
Vasiliy Kulikov c4c896e147 Bluetooth: sco: fix information leak to userspace
struct sco_conninfo has one padding byte in the end.  Local variable
cinfo of type sco_conninfo is copied to userspace with this uninizialized
one byte, leading to old stack contents leak.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-02-14 12:51:40 -02:00
Andrei Emeltchenko 735cbc4784 Bluetooth: clean up sco code
Do not use assignments in IF condition, remove extra spaces

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-12-01 21:04:43 -02:00
Gustavo F. Padovan c89ad73722 Bluetooth: Fix not returning proper error in SCO
Return 0 in that situation could lead to errors in the caller.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2010-11-22 18:23:18 -02:00
Joe Perches 3fa21e07e6 net: Remove unnecessary returns from void function()s
This patch removes from net/ (but not any netfilter files)
all the unnecessary return; statements that precede the
last closing brace of void functions.

It does not remove the returns that are immediately
preceded by a label as gcc doesn't like that.

Done via:
$ grep -rP --include=*.[ch] -l "return;\n}" net/ | \
  xargs perl -i -e 'local $/ ; while (<>) { s/\n[ \t\n]+return;\n}/\n}/g; print; }'

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-17 23:23:14 -07:00
Gustavo F. Padovan b9dbdbc1f4 Bluetooth: Trivial clean ups to SCO
Remove extra braces and labels, break over column 80 lines, etc

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:45 +02:00
Gustavo F. Padovan 0d861d8b8e Bluetooth: Make hci_send_sco() void
It also removes an unneeded check for the MTU. The check is done before
on sco_send_frame()

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-05-10 09:28:45 +02:00
Eric Dumazet aa39514516 net: sk_sleep() helper
Define a new function to return the waitqueue of a "struct sock".

static inline wait_queue_head_t *sk_sleep(struct sock *sk)
{
	return sk->sk_sleep;
}

Change all read occurrences of sk_sleep by a call to this function.

Needed for a future RCU conversion. sk_sleep wont be a field directly
available.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-20 16:37:13 -07:00
Changli Gao 6503d96168 net: check the length of the socket address passed to connect(2)
check the length of the socket address passed to connect(2).

Check the length of the socket address passed to connect(2). If the
length is invalid, -EINVAL will be returned.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
----
net/bluetooth/l2cap.c | 3 ++-
net/bluetooth/rfcomm/sock.c | 3 ++-
net/bluetooth/sco.c | 3 ++-
net/can/bcm.c | 3 +++
net/ieee802154/af_ieee802154.c | 3 +++
net/ipv4/af_inet.c | 5 +++++
net/netlink/af_netlink.c | 3 +++
7 files changed, 20 insertions(+), 3 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 17:26:01 -07:00
Marcel Holtmann aef7d97cc6 Bluetooth: Convert debug files to actually use debugfs instead of sysfs
Some of the debug files ended up wrongly in sysfs, because at that point
of time, debugfs didn't exist. Convert these files to use debugfs and
also seq_file. This patch converts all of these files at once and then
removes the exported symbol for the Bluetooth sysfs class.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-03-21 05:49:35 +01:00
Marcel Holtmann 101545f6fe Bluetooth: Fix potential bad memory access with sysfs files
When creating a high number of Bluetooth sockets (L2CAP, SCO
and RFCOMM) it is possible to scribble repeatedly on arbitrary
pages of memory. Ensure that the content of these sysfs files is
always less than one page. Even if this means truncating. The
files in question are scheduled to be moved over to debugfs in
the future anyway.

Based on initial patches from Neil Brown and Linus Torvalds

Reported-by: Neil Brown <neilb@suse.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2010-03-21 05:49:32 +01:00
Andi Kleen 28812fe11a driver-core: Add attribute argument to class_attribute show/store
Passing the attribute to the low level IO functions allows all kinds
of cleanups, by sharing low level IO code without requiring
an own function for every piece of data.

Also drivers can extend the attributes with own data fields
and use that in the low level function.

This makes the class attributes the same as sysdev_class attributes
and plain attributes.

This will allow further cleanups in drivers.

Full tree sweep converting all users.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07 17:04:48 -08:00
Eric Paris 3f378b6844 net: pass kern to net_proto_family create function
The generic __sock_create function has a kern argument which allows the
security system to make decisions based on if a socket is being created by
the kernel or by userspace.  This patch passes that flag to the
net_proto_family specific create function, so it can do the same thing.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-11-05 22:18:14 -08:00
Stephen Hemminger ec1b4cf74c net: mark net_proto_ops as const
All usages of structure net_proto_ops should be declared const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-07 01:10:46 -07:00
David S. Miller b7058842c9 net: Make setsockopt() optlen be unsigned.
This provides safety against negative optlen at the type
level instead of depending upon (sometimes non-trivial)
checks against this sprinkled all over the the place, in
each and every implementation.

Based upon work done by Arjan van de Ven and feedback
from Linus Torvalds.

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-30 16:12:20 -07:00
Marcel Holtmann fd0b3ff707 Bluetooth: Add proper shutdown support to SCO sockets
The SCO sockets for Bluetooth audio setup and streaming are missing the
shutdown implementation. This hasn't been a problem so far, but with a
more deeper integration with PulseAudio it is important to shutdown SCO
sockets properly.

Also the Headset profile 1.2 has more detailed qualification tests that
require that SCO and RFCOMM channels are terminated in the right order. A
proper shutdown function is necessary for this.

Based on a report by Johan Hedberg <johan.hedberg@nokia.com>

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Tested-by: Johan Hedberg <johan.hedberg@nokia.com>
2009-08-22 14:11:46 -07:00