<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/net/compat.c, branch v3.2.67</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>net: sendmsg: fix NULL pointer dereference</title>
<updated>2014-09-13T22:41:40+00:00</updated>
<author>
<name>Andrey Ryabinin</name>
<email>ryabinin.a.a@gmail.com</email>
</author>
<published>2014-07-26T17:26:58+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=3f3067bb9c7b55bf56b49870ba8d61d88af77c8f'/>
<id>3f3067bb9c7b55bf56b49870ba8d61d88af77c8f</id>
<content type='text'>
commit 40eea803c6b2cfaab092f053248cbeab3f368412 upstream.

Sasha's report:
	&gt; While fuzzing with trinity inside a KVM tools guest running the latest -next
	&gt; kernel with the KASAN patchset, I've stumbled on the following spew:
	&gt;
	&gt; [ 4448.949424] ==================================================================
	&gt; [ 4448.951737] AddressSanitizer: user-memory-access on address 0
	&gt; [ 4448.952988] Read of size 2 by thread T19638:
	&gt; [ 4448.954510] CPU: 28 PID: 19638 Comm: trinity-c76 Not tainted 3.16.0-rc4-next-20140711-sasha-00046-g07d3099-dirty #813
	&gt; [ 4448.956823]  ffff88046d86ca40 0000000000000000 ffff880082f37e78 ffff880082f37a40
	&gt; [ 4448.958233]  ffffffffb6e47068 ffff880082f37a68 ffff880082f37a58 ffffffffb242708d
	&gt; [ 4448.959552]  0000000000000000 ffff880082f37a88 ffffffffb24255b1 0000000000000000
	&gt; [ 4448.961266] Call Trace:
	&gt; [ 4448.963158] dump_stack (lib/dump_stack.c:52)
	&gt; [ 4448.964244] kasan_report_user_access (mm/kasan/report.c:184)
	&gt; [ 4448.965507] __asan_load2 (mm/kasan/kasan.c:352)
	&gt; [ 4448.966482] ? netlink_sendmsg (net/netlink/af_netlink.c:2339)
	&gt; [ 4448.967541] netlink_sendmsg (net/netlink/af_netlink.c:2339)
	&gt; [ 4448.968537] ? get_parent_ip (kernel/sched/core.c:2555)
	&gt; [ 4448.970103] sock_sendmsg (net/socket.c:654)
	&gt; [ 4448.971584] ? might_fault (mm/memory.c:3741)
	&gt; [ 4448.972526] ? might_fault (./arch/x86/include/asm/current.h:14 mm/memory.c:3740)
	&gt; [ 4448.973596] ? verify_iovec (net/core/iovec.c:64)
	&gt; [ 4448.974522] ___sys_sendmsg (net/socket.c:2096)
	&gt; [ 4448.975797] ? put_lock_stats.isra.13 (./arch/x86/include/asm/preempt.h:98 kernel/locking/lockdep.c:254)
	&gt; [ 4448.977030] ? lock_release_holdtime (kernel/locking/lockdep.c:273)
	&gt; [ 4448.978197] ? lock_release_non_nested (kernel/locking/lockdep.c:3434 (discriminator 1))
	&gt; [ 4448.979346] ? check_chain_key (kernel/locking/lockdep.c:2188)
	&gt; [ 4448.980535] __sys_sendmmsg (net/socket.c:2181)
	&gt; [ 4448.981592] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2600)
	&gt; [ 4448.982773] ? trace_hardirqs_on (kernel/locking/lockdep.c:2607)
	&gt; [ 4448.984458] ? syscall_trace_enter (arch/x86/kernel/ptrace.c:1500 (discriminator 2))
	&gt; [ 4448.985621] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2600)
	&gt; [ 4448.986754] SyS_sendmmsg (net/socket.c:2201)
	&gt; [ 4448.987708] tracesys (arch/x86/kernel/entry_64.S:542)
	&gt; [ 4448.988929] ==================================================================

This reports means that we've come to netlink_sendmsg() with msg-&gt;msg_name == NULL and msg-&gt;msg_namelen &gt; 0.

After this report there was no usual "Unable to handle kernel NULL pointer dereference"
and this gave me a clue that address 0 is mapped and contains valid socket address structure in it.

This bug was introduced in f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
(net: rework recvmsg handler msg_name and msg_namelen logic).
Commit message states that:
	"Set msg-&gt;msg_name = NULL if user specified a NULL in msg_name but had a
	 non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
	 affect sendto as it would bail out earlier while trying to copy-in the
	 address."
But in fact this affects sendto when address 0 is mapped and contains
socket address structure in it. In such case copy-in address will succeed,
verify_iovec() function will successfully exit with msg-&gt;msg_namelen &gt; 0
and msg-&gt;msg_name == NULL.

This patch fixes it by setting msg_namelen to 0 if msg_name == NULL.

Cc: Hannes Frederic Sowa &lt;hannes@stressinduktion.org&gt;
Cc: Eric Dumazet &lt;edumazet@google.com&gt;
Reported-by: Sasha Levin &lt;sasha.levin@oracle.com&gt;
Signed-off-by: Andrey Ryabinin &lt;a.ryabinin@samsung.com&gt;
Acked-by: Hannes Frederic Sowa &lt;hannes@stressinduktion.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 40eea803c6b2cfaab092f053248cbeab3f368412 upstream.

Sasha's report:
	&gt; While fuzzing with trinity inside a KVM tools guest running the latest -next
	&gt; kernel with the KASAN patchset, I've stumbled on the following spew:
	&gt;
	&gt; [ 4448.949424] ==================================================================
	&gt; [ 4448.951737] AddressSanitizer: user-memory-access on address 0
	&gt; [ 4448.952988] Read of size 2 by thread T19638:
	&gt; [ 4448.954510] CPU: 28 PID: 19638 Comm: trinity-c76 Not tainted 3.16.0-rc4-next-20140711-sasha-00046-g07d3099-dirty #813
	&gt; [ 4448.956823]  ffff88046d86ca40 0000000000000000 ffff880082f37e78 ffff880082f37a40
	&gt; [ 4448.958233]  ffffffffb6e47068 ffff880082f37a68 ffff880082f37a58 ffffffffb242708d
	&gt; [ 4448.959552]  0000000000000000 ffff880082f37a88 ffffffffb24255b1 0000000000000000
	&gt; [ 4448.961266] Call Trace:
	&gt; [ 4448.963158] dump_stack (lib/dump_stack.c:52)
	&gt; [ 4448.964244] kasan_report_user_access (mm/kasan/report.c:184)
	&gt; [ 4448.965507] __asan_load2 (mm/kasan/kasan.c:352)
	&gt; [ 4448.966482] ? netlink_sendmsg (net/netlink/af_netlink.c:2339)
	&gt; [ 4448.967541] netlink_sendmsg (net/netlink/af_netlink.c:2339)
	&gt; [ 4448.968537] ? get_parent_ip (kernel/sched/core.c:2555)
	&gt; [ 4448.970103] sock_sendmsg (net/socket.c:654)
	&gt; [ 4448.971584] ? might_fault (mm/memory.c:3741)
	&gt; [ 4448.972526] ? might_fault (./arch/x86/include/asm/current.h:14 mm/memory.c:3740)
	&gt; [ 4448.973596] ? verify_iovec (net/core/iovec.c:64)
	&gt; [ 4448.974522] ___sys_sendmsg (net/socket.c:2096)
	&gt; [ 4448.975797] ? put_lock_stats.isra.13 (./arch/x86/include/asm/preempt.h:98 kernel/locking/lockdep.c:254)
	&gt; [ 4448.977030] ? lock_release_holdtime (kernel/locking/lockdep.c:273)
	&gt; [ 4448.978197] ? lock_release_non_nested (kernel/locking/lockdep.c:3434 (discriminator 1))
	&gt; [ 4448.979346] ? check_chain_key (kernel/locking/lockdep.c:2188)
	&gt; [ 4448.980535] __sys_sendmmsg (net/socket.c:2181)
	&gt; [ 4448.981592] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2600)
	&gt; [ 4448.982773] ? trace_hardirqs_on (kernel/locking/lockdep.c:2607)
	&gt; [ 4448.984458] ? syscall_trace_enter (arch/x86/kernel/ptrace.c:1500 (discriminator 2))
	&gt; [ 4448.985621] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2600)
	&gt; [ 4448.986754] SyS_sendmmsg (net/socket.c:2201)
	&gt; [ 4448.987708] tracesys (arch/x86/kernel/entry_64.S:542)
	&gt; [ 4448.988929] ==================================================================

This reports means that we've come to netlink_sendmsg() with msg-&gt;msg_name == NULL and msg-&gt;msg_namelen &gt; 0.

After this report there was no usual "Unable to handle kernel NULL pointer dereference"
and this gave me a clue that address 0 is mapped and contains valid socket address structure in it.

This bug was introduced in f3d3342602f8bcbf37d7c46641cb9bca7618eb1c
(net: rework recvmsg handler msg_name and msg_namelen logic).
Commit message states that:
	"Set msg-&gt;msg_name = NULL if user specified a NULL in msg_name but had a
	 non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
	 affect sendto as it would bail out earlier while trying to copy-in the
	 address."
But in fact this affects sendto when address 0 is mapped and contains
socket address structure in it. In such case copy-in address will succeed,
verify_iovec() function will successfully exit with msg-&gt;msg_namelen &gt; 0
and msg-&gt;msg_name == NULL.

This patch fixes it by setting msg_namelen to 0 if msg_name == NULL.

Cc: Hannes Frederic Sowa &lt;hannes@stressinduktion.org&gt;
Cc: Eric Dumazet &lt;edumazet@google.com&gt;
Reported-by: Sasha Levin &lt;sasha.levin@oracle.com&gt;
Signed-off-by: Andrey Ryabinin &lt;a.ryabinin@samsung.com&gt;
Acked-by: Hannes Frederic Sowa &lt;hannes@stressinduktion.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: clamp -&gt;msg_namelen instead of returning an error</title>
<updated>2014-01-03T04:33:33+00:00</updated>
<author>
<name>Dan Carpenter</name>
<email>dan.carpenter@oracle.com</email>
</author>
<published>2013-11-27T12:40:21+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=26fe7ef27e2db83b33ac7fb1cb3bca829cbcb8e2'/>
<id>26fe7ef27e2db83b33ac7fb1cb3bca829cbcb8e2</id>
<content type='text'>
[ Upstream commit db31c55a6fb245fdbb752a2ca4aefec89afabb06 ]

If kmsg-&gt;msg_namelen &gt; sizeof(struct sockaddr_storage) then in the
original code that would lead to memory corruption in the kernel if you
had audit configured.  If you didn't have audit configured it was
harmless.

There are some programs such as beta versions of Ruby which use too
large of a buffer and returning an error code breaks them.  We should
clamp the -&gt;msg_namelen value instead.

Fixes: 1661bf364ae9 ("net: heap overflow in __audit_sockaddr()")
Reported-by: Eric Wong &lt;normalperson@yhbt.net&gt;
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Tested-by: Eric Wong &lt;normalperson@yhbt.net&gt;
Acked-by: Eric Dumazet &lt;edumazet@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit db31c55a6fb245fdbb752a2ca4aefec89afabb06 ]

If kmsg-&gt;msg_namelen &gt; sizeof(struct sockaddr_storage) then in the
original code that would lead to memory corruption in the kernel if you
had audit configured.  If you didn't have audit configured it was
harmless.

There are some programs such as beta versions of Ruby which use too
large of a buffer and returning an error code breaks them.  We should
clamp the -&gt;msg_namelen value instead.

Fixes: 1661bf364ae9 ("net: heap overflow in __audit_sockaddr()")
Reported-by: Eric Wong &lt;normalperson@yhbt.net&gt;
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Tested-by: Eric Wong &lt;normalperson@yhbt.net&gt;
Acked-by: Eric Dumazet &lt;edumazet@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: rework recvmsg handler msg_name and msg_namelen logic</title>
<updated>2014-01-03T04:33:33+00:00</updated>
<author>
<name>Hannes Frederic Sowa</name>
<email>hannes@stressinduktion.org</email>
</author>
<published>2013-11-21T02:14:22+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=a598f7fa9c24c3ef458043d59c237b8fc5d1adad'/>
<id>a598f7fa9c24c3ef458043d59c237b8fc5d1adad</id>
<content type='text'>
[ Upstream commit f3d3342602f8bcbf37d7c46641cb9bca7618eb1c ]

This patch now always passes msg-&gt;msg_namelen as 0. recvmsg handlers must
set msg_namelen to the proper size &lt;= sizeof(struct sockaddr_storage)
to return msg_name to the user.

This prevents numerous uninitialized memory leaks we had in the
recvmsg handlers and makes it harder for new code to accidentally leak
uninitialized memory.

Optimize for the case recvfrom is called with NULL as address. We don't
need to copy the address at all, so set it to NULL before invoking the
recvmsg handler. We can do so, because all the recvmsg handlers must
cope with the case a plain read() is called on them. read() also sets
msg_name to NULL.

Also document these changes in include/linux/net.h as suggested by David
Miller.

Changes since RFC:

Set msg-&gt;msg_name = NULL if user specified a NULL in msg_name but had a
non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
affect sendto as it would bail out earlier while trying to copy-in the
address. It also more naturally reflects the logic by the callers of
verify_iovec.

With this change in place I could remove "
if (!uaddr || msg_sys-&gt;msg_namelen == 0)
	msg-&gt;msg_name = NULL
".

This change does not alter the user visible error logic as we ignore
msg_namelen as long as msg_name is NULL.

Also remove two unnecessary curly brackets in ___sys_recvmsg and change
comments to netdev style.

Cc: David Miller &lt;davem@davemloft.net&gt;
Suggested-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Signed-off-by: Hannes Frederic Sowa &lt;hannes@stressinduktion.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit f3d3342602f8bcbf37d7c46641cb9bca7618eb1c ]

This patch now always passes msg-&gt;msg_namelen as 0. recvmsg handlers must
set msg_namelen to the proper size &lt;= sizeof(struct sockaddr_storage)
to return msg_name to the user.

This prevents numerous uninitialized memory leaks we had in the
recvmsg handlers and makes it harder for new code to accidentally leak
uninitialized memory.

Optimize for the case recvfrom is called with NULL as address. We don't
need to copy the address at all, so set it to NULL before invoking the
recvmsg handler. We can do so, because all the recvmsg handlers must
cope with the case a plain read() is called on them. read() also sets
msg_name to NULL.

Also document these changes in include/linux/net.h as suggested by David
Miller.

Changes since RFC:

Set msg-&gt;msg_name = NULL if user specified a NULL in msg_name but had a
non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
affect sendto as it would bail out earlier while trying to copy-in the
address. It also more naturally reflects the logic by the callers of
verify_iovec.

With this change in place I could remove "
if (!uaddr || msg_sys-&gt;msg_namelen == 0)
	msg-&gt;msg_name = NULL
".

This change does not alter the user visible error logic as we ignore
msg_namelen as long as msg_name is NULL.

Also remove two unnecessary curly brackets in ___sys_recvmsg and change
comments to netdev style.

Cc: David Miller &lt;davem@davemloft.net&gt;
Suggested-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Signed-off-by: Hannes Frederic Sowa &lt;hannes@stressinduktion.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: heap overflow in __audit_sockaddr()</title>
<updated>2013-11-28T14:01:56+00:00</updated>
<author>
<name>Dan Carpenter</name>
<email>dan.carpenter@oracle.com</email>
</author>
<published>2013-10-02T21:27:20+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=f1d515ce7d27262d9acb468aece806264886a9be'/>
<id>f1d515ce7d27262d9acb468aece806264886a9be</id>
<content type='text'>
[ Upstream commit 1661bf364ae9c506bc8795fef70d1532931be1e8 ]

We need to cap -&gt;msg_namelen or it leads to a buffer overflow when we
to the memcpy() in __audit_sockaddr().  It requires CAP_AUDIT_CONTROL to
exploit this bug.

The call tree is:
___sys_recvmsg()
  move_addr_to_user()
    audit_sockaddr()
      __audit_sockaddr()

Reported-by: Jüri Aedla &lt;juri.aedla@gmail.com&gt;
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 1661bf364ae9c506bc8795fef70d1532931be1e8 ]

We need to cap -&gt;msg_namelen or it leads to a buffer overflow when we
to the memcpy() in __audit_sockaddr().  It requires CAP_AUDIT_CONTROL to
exploit this bug.

The call tree is:
___sys_recvmsg()
  move_addr_to_user()
    audit_sockaddr()
      __audit_sockaddr()

Reported-by: Jüri Aedla &lt;juri.aedla@gmail.com&gt;
Signed-off-by: Dan Carpenter &lt;dan.carpenter@oracle.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: Block MSG_CMSG_COMPAT in send(m)msg and  recv(m)msg</title>
<updated>2013-06-29T03:06:39+00:00</updated>
<author>
<name>Andy Lutomirski</name>
<email>luto@amacapital.net</email>
</author>
<published>2013-05-22T21:07:44+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=8beeb76aa534e9312fdae1c91ab3a2effc847ee5'/>
<id>8beeb76aa534e9312fdae1c91ab3a2effc847ee5</id>
<content type='text'>
[ Upstream commits 1be374a0518a288147c6a7398792583200a67261 and
  a7526eb5d06b0084ef12d7b168d008fcf516caab ]

MSG_CMSG_COMPAT is (AFAIK) not intended to be part of the API --
it's a hack that steals a bit to indicate to other networking code
that a compat entry was used.  So don't allow it from a non-compat
syscall.

This prevents an oops when running this code:

int main()
{
	int s;
	struct sockaddr_in addr;
	struct msghdr *hdr;

	char *highpage = mmap((void*)(TASK_SIZE_MAX - 4096), 4096,
	                      PROT_READ | PROT_WRITE,
	                      MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
	if (highpage == MAP_FAILED)
		err(1, "mmap");

	s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
	if (s == -1)
		err(1, "socket");

        addr.sin_family = AF_INET;
        addr.sin_port = htons(1);
        addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
	if (connect(s, (struct sockaddr*)&amp;addr, sizeof(addr)) != 0)
		err(1, "connect");

	void *evil = highpage + 4096 - COMPAT_MSGHDR_SIZE;
	printf("Evil address is %p\n", evil);

	if (syscall(__NR_sendmmsg, s, evil, 1, MSG_CMSG_COMPAT) &lt; 0)
		err(1, "sendmmsg");

	return 0;
}

Cc: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Andy Lutomirski &lt;luto@amacapital.net&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commits 1be374a0518a288147c6a7398792583200a67261 and
  a7526eb5d06b0084ef12d7b168d008fcf516caab ]

MSG_CMSG_COMPAT is (AFAIK) not intended to be part of the API --
it's a hack that steals a bit to indicate to other networking code
that a compat entry was used.  So don't allow it from a non-compat
syscall.

This prevents an oops when running this code:

int main()
{
	int s;
	struct sockaddr_in addr;
	struct msghdr *hdr;

	char *highpage = mmap((void*)(TASK_SIZE_MAX - 4096), 4096,
	                      PROT_READ | PROT_WRITE,
	                      MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
	if (highpage == MAP_FAILED)
		err(1, "mmap");

	s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
	if (s == -1)
		err(1, "socket");

        addr.sin_family = AF_INET;
        addr.sin_port = htons(1);
        addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
	if (connect(s, (struct sockaddr*)&amp;addr, sizeof(addr)) != 0)
		err(1, "connect");

	void *evil = highpage + 4096 - COMPAT_MSGHDR_SIZE;
	printf("Evil address is %p\n", evil);

	if (syscall(__NR_sendmmsg, s, evil, 1, MSG_CMSG_COMPAT) &lt; 0)
		err(1, "sendmmsg");

	return 0;
}

Cc: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Andy Lutomirski &lt;luto@amacapital.net&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Ben Hutchings &lt;ben@decadent.org.uk&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules</title>
<updated>2011-10-31T23:30:30+00:00</updated>
<author>
<name>Paul Gortmaker</name>
<email>paul.gortmaker@windriver.com</email>
</author>
<published>2011-07-15T15:47:34+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=bc3b2d7fb9b014d75ebb79ba371a763dbab5e8cf'/>
<id>bc3b2d7fb9b014d75ebb79ba371a763dbab5e8cf</id>
<content type='text'>
These files are non modular, but need to export symbols using
the macros now living in export.h -- call out the include so
that things won't break when we remove the implicit presence
of module.h from everywhere.

Signed-off-by: Paul Gortmaker &lt;paul.gortmaker@windriver.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
These files are non modular, but need to export symbols using
the macros now living in export.h -- call out the include so
that things won't break when we remove the implicit presence
of module.h from everywhere.

Signed-off-by: Paul Gortmaker &lt;paul.gortmaker@windriver.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: Add sendmmsg socket system call</title>
<updated>2011-05-05T18:10:14+00:00</updated>
<author>
<name>Anton Blanchard</name>
<email>anton@samba.org</email>
</author>
<published>2011-05-02T20:21:35+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=228e548e602061b08ee8e8966f567c12aa079682'/>
<id>228e548e602061b08ee8e8966f567c12aa079682</id>
<content type='text'>
This patch adds a multiple message send syscall and is the send
version of the existing recvmmsg syscall. This is heavily
based on the patch by Arnaldo that added recvmmsg.

I wrote a microbenchmark to test the performance gains of using
this new syscall:

http://ozlabs.org/~anton/junkcode/sendmmsg_test.c

The test was run on a ppc64 box with a 10 Gbit network card. The
benchmark can send both UDP and RAW ethernet packets.

64B UDP

batch   pkts/sec
1       804570
2       872800 (+ 8 %)
4       916556 (+14 %)
8       939712 (+17 %)
16      952688 (+18 %)
32      956448 (+19 %)
64      964800 (+20 %)

64B raw socket

batch   pkts/sec
1       1201449
2       1350028 (+12 %)
4       1461416 (+22 %)
8       1513080 (+26 %)
16      1541216 (+28 %)
32      1553440 (+29 %)
64      1557888 (+30 %)

We see a 20% improvement in throughput on UDP send and 30%
on raw socket send.

[ Add sparc syscall entries. -DaveM ]

Signed-off-by: Anton Blanchard &lt;anton@samba.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This patch adds a multiple message send syscall and is the send
version of the existing recvmmsg syscall. This is heavily
based on the patch by Arnaldo that added recvmmsg.

I wrote a microbenchmark to test the performance gains of using
this new syscall:

http://ozlabs.org/~anton/junkcode/sendmmsg_test.c

The test was run on a ppc64 box with a 10 Gbit network card. The
benchmark can send both UDP and RAW ethernet packets.

64B UDP

batch   pkts/sec
1       804570
2       872800 (+ 8 %)
4       916556 (+14 %)
8       939712 (+17 %)
16      952688 (+18 %)
32      956448 (+19 %)
64      964800 (+20 %)

64B raw socket

batch   pkts/sec
1       1201449
2       1350028 (+12 %)
4       1461416 (+22 %)
8       1513080 (+26 %)
16      1541216 (+28 %)
32      1553440 (+29 %)
64      1557888 (+30 %)

We see a 20% improvement in throughput on UDP send and 30%
on raw socket send.

[ Add sparc syscall entries. -DaveM ]

Signed-off-by: Anton Blanchard &lt;anton@samba.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>net: Limit socket I/O iovec total length to INT_MAX.</title>
<updated>2010-10-28T18:47:52+00:00</updated>
<author>
<name>David S. Miller</name>
<email>davem@davemloft.net</email>
</author>
<published>2010-10-28T18:41:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=8acfe468b0384e834a303f08ebc4953d72fb690a'/>
<id>8acfe468b0384e834a303f08ebc4953d72fb690a</id>
<content type='text'>
This helps protect us from overflow issues down in the
individual protocol sendmsg/recvmsg handlers.  Once
we hit INT_MAX we truncate out the rest of the iovec
by setting the iov_len members to zero.

This works because:

1) For SOCK_STREAM and SOCK_SEQPACKET sockets, partial
   writes are allowed and the application will just continue
   with another write to send the rest of the data.

2) For datagram oriented sockets, where there must be a
   one-to-one correspondance between write() calls and
   packets on the wire, INT_MAX is going to be far larger
   than the packet size limit the protocol is going to
   check for and signal with -EMSGSIZE.

Based upon a patch by Linus Torvalds.

Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This helps protect us from overflow issues down in the
individual protocol sendmsg/recvmsg handlers.  Once
we hit INT_MAX we truncate out the rest of the iovec
by setting the iov_len members to zero.

This works because:

1) For SOCK_STREAM and SOCK_SEQPACKET sockets, partial
   writes are allowed and the application will just continue
   with another write to send the rest of the data.

2) For datagram oriented sockets, where there must be a
   one-to-one correspondance between write() calls and
   packets on the wire, INT_MAX is going to be far larger
   than the packet size limit the protocol is going to
   check for and signal with -EMSGSIZE.

Based upon a patch by Linus Torvalds.

Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>From abbffa2aa9bd6f8df16d0d0a102af677510d8b9a Mon Sep 17 00:00:00 2001</title>
<updated>2010-06-04T03:03:40+00:00</updated>
<author>
<name>Eric Dumazet</name>
<email>eric.dumazet@gmail.com</email>
</author>
<published>2010-06-04T03:03:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=c6d409cfd0fd41e7a0847875e4338ad648c9b96b'/>
<id>c6d409cfd0fd41e7a0847875e4338ad648c9b96b</id>
<content type='text'>
From: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Date: Thu, 3 Jun 2010 04:29:41 +0000
Subject: [PATCH 2/3] net: net/socket.c and net/compat.c cleanups

cleanup patch, to match modern coding style.

Signed-off-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
---
 net/compat.c |   47 ++++++++---------
 net/socket.c |  165 ++++++++++++++++++++++++++++------------------------------
 2 files changed, 102 insertions(+), 110 deletions(-)

diff --git a/net/compat.c b/net/compat.c
index 1cf7590..63d260e 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -81,7 +81,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
 	int tot_len;

 	if (kern_msg-&gt;msg_namelen) {
-		if (mode==VERIFY_READ) {
+		if (mode == VERIFY_READ) {
 			int err = move_addr_to_kernel(kern_msg-&gt;msg_name,
 						      kern_msg-&gt;msg_namelen,
 						      kern_address);
@@ -354,7 +354,7 @@ static int do_set_attach_filter(struct socket *sock, int level, int optname,
 static int do_set_sock_timeout(struct socket *sock, int level,
 		int optname, char __user *optval, unsigned int optlen)
 {
-	struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
+	struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
 	struct timeval ktime;
 	mm_segment_t old_fs;
 	int err;
@@ -367,7 +367,7 @@ static int do_set_sock_timeout(struct socket *sock, int level,
 		return -EFAULT;
 	old_fs = get_fs();
 	set_fs(KERNEL_DS);
-	err = sock_setsockopt(sock, level, optname, (char *) &amp;ktime, sizeof(ktime));
+	err = sock_setsockopt(sock, level, optname, (char *)&amp;ktime, sizeof(ktime));
 	set_fs(old_fs);

 	return err;
@@ -389,11 +389,10 @@ asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
 				char __user *optval, unsigned int optlen)
 {
 	int err;
-	struct socket *sock;
+	struct socket *sock = sockfd_lookup(fd, &amp;err);

-	if ((sock = sockfd_lookup(fd, &amp;err))!=NULL)
-	{
-		err = security_socket_setsockopt(sock,level,optname);
+	if (sock) {
+		err = security_socket_setsockopt(sock, level, optname);
 		if (err) {
 			sockfd_put(sock);
 			return err;
@@ -453,7 +452,7 @@ static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
 {
 	struct compat_timeval __user *ctv =
-			(struct compat_timeval __user*) userstamp;
+			(struct compat_timeval __user *) userstamp;
 	int err = -ENOENT;
 	struct timeval tv;

@@ -477,7 +476,7 @@ EXPORT_SYMBOL(compat_sock_get_timestamp);
 int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
 {
 	struct compat_timespec __user *ctv =
-			(struct compat_timespec __user*) userstamp;
+			(struct compat_timespec __user *) userstamp;
 	int err = -ENOENT;
 	struct timespec ts;

@@ -502,12 +501,10 @@ asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
 				char __user *optval, int __user *optlen)
 {
 	int err;
-	struct socket *sock;
+	struct socket *sock = sockfd_lookup(fd, &amp;err);

-	if ((sock = sockfd_lookup(fd, &amp;err))!=NULL)
-	{
-		err = security_socket_getsockopt(sock, level,
-							   optname);
+	if (sock) {
+		err = security_socket_getsockopt(sock, level, optname);
 		if (err) {
 			sockfd_put(sock);
 			return err;
@@ -557,7 +554,7 @@ struct compat_group_filter {

 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
 	char __user *optval, unsigned int optlen,
-	int (*setsockopt)(struct sock *,int,int,char __user *,unsigned int))
+	int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
 {
 	char __user	*koptval = optval;
 	int		koptlen = optlen;
@@ -640,12 +637,11 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
 	}
 	return setsockopt(sock, level, optname, koptval, koptlen);
 }
-
 EXPORT_SYMBOL(compat_mc_setsockopt);

 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
 	char __user *optval, int __user *optlen,
-	int (*getsockopt)(struct sock *,int,int,char __user *,int __user *))
+	int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
 {
 	struct compat_group_filter __user *gf32 = (void *)optval;
 	struct group_filter __user *kgf;
@@ -681,7 +677,7 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname,
 	    __put_user(interface, &amp;kgf-&gt;gf_interface) ||
 	    __put_user(fmode, &amp;kgf-&gt;gf_fmode) ||
 	    __put_user(numsrc, &amp;kgf-&gt;gf_numsrc) ||
-	    copy_in_user(&amp;kgf-&gt;gf_group,&amp;gf32-&gt;gf_group,sizeof(kgf-&gt;gf_group)))
+	    copy_in_user(&amp;kgf-&gt;gf_group, &amp;gf32-&gt;gf_group, sizeof(kgf-&gt;gf_group)))
 		return -EFAULT;

 	err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
@@ -714,21 +710,22 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname,
 		copylen = numsrc * sizeof(gf32-&gt;gf_slist[0]);
 		if (copylen &gt; klen)
 			copylen = klen;
-	        if (copy_in_user(gf32-&gt;gf_slist, kgf-&gt;gf_slist, copylen))
+		if (copy_in_user(gf32-&gt;gf_slist, kgf-&gt;gf_slist, copylen))
 			return -EFAULT;
 	}
 	return err;
 }
-
 EXPORT_SYMBOL(compat_mc_getsockopt);

 /* Argument list sizes for compat_sys_socketcall */
 #define AL(x) ((x) * sizeof(u32))
-static unsigned char nas[20]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
-				AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
-				AL(6),AL(2),AL(5),AL(5),AL(3),AL(3),
-				AL(4),AL(5)};
+static unsigned char nas[20] = {
+	AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
+	AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
+	AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
+	AL(4), AL(5)
+};
 #undef AL

 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags)
@@ -827,7 +824,7 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
 					  compat_ptr(a[4]), compat_ptr(a[5]));
 		break;
 	case SYS_SHUTDOWN:
-		ret = sys_shutdown(a0,a1);
+		ret = sys_shutdown(a0, a1);
 		break;
 	case SYS_SETSOCKOPT:
 		ret = compat_sys_setsockopt(a0, a1, a[2],
diff --git a/net/socket.c b/net/socket.c
index 367d547..b63c051 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -124,7 +124,7 @@ static int sock_fasync(int fd, struct file *filp, int on);
 static ssize_t sock_sendpage(struct file *file, struct page *page,
 			     int offset, size_t size, loff_t *ppos, int more);
 static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
-			        struct pipe_inode_info *pipe, size_t len,
+				struct pipe_inode_info *pipe, size_t len,
 				unsigned int flags);

 /*
@@ -162,7 +162,7 @@ static const struct net_proto_family *net_families[NPROTO] __read_mostly;
  *	Statistics counters of the socket lists
  */

-static DEFINE_PER_CPU(int, sockets_in_use) = 0;
+static DEFINE_PER_CPU(int, sockets_in_use);

 /*
  * Support routines.
@@ -309,9 +309,9 @@ static int init_inodecache(void)
 }

 static const struct super_operations sockfs_ops = {
-	.alloc_inode =	sock_alloc_inode,
-	.destroy_inode =sock_destroy_inode,
-	.statfs =	simple_statfs,
+	.alloc_inode	= sock_alloc_inode,
+	.destroy_inode	= sock_destroy_inode,
+	.statfs		= simple_statfs,
 };

 static int sockfs_get_sb(struct file_system_type *fs_type,
@@ -411,6 +411,7 @@ int sock_map_fd(struct socket *sock, int flags)

 	return fd;
 }
+EXPORT_SYMBOL(sock_map_fd);

 static struct socket *sock_from_file(struct file *file, int *err)
 {
@@ -422,7 +423,7 @@ static struct socket *sock_from_file(struct file *file, int *err)
 }

 /**
- *	sockfd_lookup	- 	Go from a file number to its socket slot
+ *	sockfd_lookup - Go from a file number to its socket slot
  *	@fd: file handle
  *	@err: pointer to an error code return
  *
@@ -450,6 +451,7 @@ struct socket *sockfd_lookup(int fd, int *err)
 		fput(file);
 	return sock;
 }
+EXPORT_SYMBOL(sockfd_lookup);

 static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
 {
@@ -540,6 +542,7 @@ void sock_release(struct socket *sock)
 	}
 	sock-&gt;file = NULL;
 }
+EXPORT_SYMBOL(sock_release);

 int sock_tx_timestamp(struct msghdr *msg, struct sock *sk,
 		      union skb_shared_tx *shtx)
@@ -586,6 +589,7 @@ int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 		ret = wait_on_sync_kiocb(&amp;iocb);
 	return ret;
 }
+EXPORT_SYMBOL(sock_sendmsg);

 int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
 		   struct kvec *vec, size_t num, size_t size)
@@ -604,6 +608,7 @@ int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
 	set_fs(oldfs);
 	return result;
 }
+EXPORT_SYMBOL(kernel_sendmsg);

 static int ktime2ts(ktime_t kt, struct timespec *ts)
 {
@@ -664,7 +669,6 @@ void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
 		put_cmsg(msg, SOL_SOCKET,
 			 SCM_TIMESTAMPING, sizeof(ts), &amp;ts);
 }
-
 EXPORT_SYMBOL_GPL(__sock_recv_timestamp);

 inline void sock_recv_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
@@ -720,6 +724,7 @@ int sock_recvmsg(struct socket *sock, struct msghdr *msg,
 		ret = wait_on_sync_kiocb(&amp;iocb);
 	return ret;
 }
+EXPORT_SYMBOL(sock_recvmsg);

 static int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg,
 			      size_t size, int flags)
@@ -752,6 +757,7 @@ int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
 	set_fs(oldfs);
 	return result;
 }
+EXPORT_SYMBOL(kernel_recvmsg);

 static void sock_aio_dtor(struct kiocb *iocb)
 {
@@ -774,7 +780,7 @@ static ssize_t sock_sendpage(struct file *file, struct page *page,
 }

 static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
-			        struct pipe_inode_info *pipe, size_t len,
+				struct pipe_inode_info *pipe, size_t len,
 				unsigned int flags)
 {
 	struct socket *sock = file-&gt;private_data;
@@ -887,7 +893,7 @@ static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
  */

 static DEFINE_MUTEX(br_ioctl_mutex);
-static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg) = NULL;
+static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg);

 void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *))
 {
@@ -895,7 +901,6 @@ void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *))
 	br_ioctl_hook = hook;
 	mutex_unlock(&amp;br_ioctl_mutex);
 }
-
 EXPORT_SYMBOL(brioctl_set);

 static DEFINE_MUTEX(vlan_ioctl_mutex);
@@ -907,7 +912,6 @@ void vlan_ioctl_set(int (*hook) (struct net *, void __user *))
 	vlan_ioctl_hook = hook;
 	mutex_unlock(&amp;vlan_ioctl_mutex);
 }
-
 EXPORT_SYMBOL(vlan_ioctl_set);

 static DEFINE_MUTEX(dlci_ioctl_mutex);
@@ -919,7 +923,6 @@ void dlci_ioctl_set(int (*hook) (unsigned int, void __user *))
 	dlci_ioctl_hook = hook;
 	mutex_unlock(&amp;dlci_ioctl_mutex);
 }
-
 EXPORT_SYMBOL(dlci_ioctl_set);

 static long sock_do_ioctl(struct net *net, struct socket *sock,
@@ -1047,6 +1050,7 @@ out_release:
 	sock = NULL;
 	goto out;
 }
+EXPORT_SYMBOL(sock_create_lite);

 /* No kernel lock held - perfect */
 static unsigned int sock_poll(struct file *file, poll_table *wait)
@@ -1147,6 +1151,7 @@ call_kill:
 	rcu_read_unlock();
 	return 0;
 }
+EXPORT_SYMBOL(sock_wake_async);

 static int __sock_create(struct net *net, int family, int type, int protocol,
 			 struct socket **res, int kern)
@@ -1265,11 +1270,13 @@ int sock_create(int family, int type, int protocol, struct socket **res)
 {
 	return __sock_create(current-&gt;nsproxy-&gt;net_ns, family, type, protocol, res, 0);
 }
+EXPORT_SYMBOL(sock_create);

 int sock_create_kern(int family, int type, int protocol, struct socket **res)
 {
 	return __sock_create(&amp;init_net, family, type, protocol, res, 1);
 }
+EXPORT_SYMBOL(sock_create_kern);

 SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol)
 {
@@ -1474,7 +1481,8 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
 		goto out;

 	err = -ENFILE;
-	if (!(newsock = sock_alloc()))
+	newsock = sock_alloc();
+	if (!newsock)
 		goto out_put;

 	newsock-&gt;type = sock-&gt;type;
@@ -1861,8 +1869,7 @@ SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
 	if (MSG_CMSG_COMPAT &amp; flags) {
 		if (get_compat_msghdr(&amp;msg_sys, msg_compat))
 			return -EFAULT;
-	}
-	else if (copy_from_user(&amp;msg_sys, msg, sizeof(struct msghdr)))
+	} else if (copy_from_user(&amp;msg_sys, msg, sizeof(struct msghdr)))
 		return -EFAULT;

 	sock = sockfd_lookup_light(fd, &amp;err, &amp;fput_needed);
@@ -1964,8 +1971,7 @@ static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg,
 	if (MSG_CMSG_COMPAT &amp; flags) {
 		if (get_compat_msghdr(msg_sys, msg_compat))
 			return -EFAULT;
-	}
-	else if (copy_from_user(msg_sys, msg, sizeof(struct msghdr)))
+	} else if (copy_from_user(msg_sys, msg, sizeof(struct msghdr)))
 		return -EFAULT;

 	err = -EMSGSIZE;
@@ -2191,10 +2197,10 @@ SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg,
 /* Argument list sizes for sys_socketcall */
 #define AL(x) ((x) * sizeof(unsigned long))
 static const unsigned char nargs[20] = {
-	AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
-	AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
-	AL(6),AL(2),AL(5),AL(5),AL(3),AL(3),
-	AL(4),AL(5)
+	AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
+	AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
+	AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
+	AL(4), AL(5)
 };

 #undef AL
@@ -2340,6 +2346,7 @@ int sock_register(const struct net_proto_family *ops)
 	printk(KERN_INFO "NET: Registered protocol family %d\n", ops-&gt;family);
 	return err;
 }
+EXPORT_SYMBOL(sock_register);

 /**
  *	sock_unregister - remove a protocol handler
@@ -2366,6 +2373,7 @@ void sock_unregister(int family)

 	printk(KERN_INFO "NET: Unregistered protocol family %d\n", family);
 }
+EXPORT_SYMBOL(sock_unregister);

 static int __init sock_init(void)
 {
@@ -2490,13 +2498,13 @@ static int dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32)
 		ifc.ifc_req = NULL;
 		uifc = compat_alloc_user_space(sizeof(struct ifconf));
 	} else {
-		size_t len =((ifc32.ifc_len / sizeof (struct compat_ifreq)) + 1) *
-			sizeof (struct ifreq);
+		size_t len = ((ifc32.ifc_len / sizeof(struct compat_ifreq)) + 1) *
+			sizeof(struct ifreq);
 		uifc = compat_alloc_user_space(sizeof(struct ifconf) + len);
 		ifc.ifc_len = len;
 		ifr = ifc.ifc_req = (void __user *)(uifc + 1);
 		ifr32 = compat_ptr(ifc32.ifcbuf);
-		for (i = 0; i &lt; ifc32.ifc_len; i += sizeof (struct compat_ifreq)) {
+		for (i = 0; i &lt; ifc32.ifc_len; i += sizeof(struct compat_ifreq)) {
 			if (copy_in_user(ifr, ifr32, sizeof(struct compat_ifreq)))
 				return -EFAULT;
 			ifr++;
@@ -2516,9 +2524,9 @@ static int dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32)
 	ifr = ifc.ifc_req;
 	ifr32 = compat_ptr(ifc32.ifcbuf);
 	for (i = 0, j = 0;
-             i + sizeof (struct compat_ifreq) &lt;= ifc32.ifc_len &amp;&amp; j &lt; ifc.ifc_len;
-	     i += sizeof (struct compat_ifreq), j += sizeof (struct ifreq)) {
-		if (copy_in_user(ifr32, ifr, sizeof (struct compat_ifreq)))
+	     i + sizeof(struct compat_ifreq) &lt;= ifc32.ifc_len &amp;&amp; j &lt; ifc.ifc_len;
+	     i += sizeof(struct compat_ifreq), j += sizeof(struct ifreq)) {
+		if (copy_in_user(ifr32, ifr, sizeof(struct compat_ifreq)))
 			return -EFAULT;
 		ifr32++;
 		ifr++;
@@ -2567,7 +2575,7 @@ static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32
 	compat_uptr_t uptr32;
 	struct ifreq __user *uifr;

-	uifr = compat_alloc_user_space(sizeof (*uifr));
+	uifr = compat_alloc_user_space(sizeof(*uifr));
 	if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq)))
 		return -EFAULT;

@@ -2601,9 +2609,9 @@ static int bond_ioctl(struct net *net, unsigned int cmd,
 			return -EFAULT;

 		old_fs = get_fs();
-		set_fs (KERNEL_DS);
+		set_fs(KERNEL_DS);
 		err = dev_ioctl(net, cmd, &amp;kifr);
-		set_fs (old_fs);
+		set_fs(old_fs);

 		return err;
 	case SIOCBONDSLAVEINFOQUERY:
@@ -2710,9 +2718,9 @@ static int compat_sioc_ifmap(struct net *net, unsigned int cmd,
 		return -EFAULT;

 	old_fs = get_fs();
-	set_fs (KERNEL_DS);
+	set_fs(KERNEL_DS);
 	err = dev_ioctl(net, cmd, (void __user *)&amp;ifr);
-	set_fs (old_fs);
+	set_fs(old_fs);

 	if (cmd == SIOCGIFMAP &amp;&amp; !err) {
 		err = copy_to_user(uifr32, &amp;ifr, sizeof(ifr.ifr_name));
@@ -2734,7 +2742,7 @@ static int compat_siocshwtstamp(struct net *net, struct compat_ifreq __user *uif
 	compat_uptr_t uptr32;
 	struct ifreq __user *uifr;

-	uifr = compat_alloc_user_space(sizeof (*uifr));
+	uifr = compat_alloc_user_space(sizeof(*uifr));
 	if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq)))
 		return -EFAULT;

@@ -2750,20 +2758,20 @@ static int compat_siocshwtstamp(struct net *net, struct compat_ifreq __user *uif
 }

 struct rtentry32 {
-	u32   		rt_pad1;
+	u32		rt_pad1;
 	struct sockaddr rt_dst;         /* target address               */
 	struct sockaddr rt_gateway;     /* gateway addr (RTF_GATEWAY)   */
 	struct sockaddr rt_genmask;     /* target network mask (IP)     */
-	unsigned short  rt_flags;
-	short           rt_pad2;
-	u32   		rt_pad3;
-	unsigned char   rt_tos;
-	unsigned char   rt_class;
-	short           rt_pad4;
-	short           rt_metric;      /* +1 for binary compatibility! */
+	unsigned short	rt_flags;
+	short		rt_pad2;
+	u32		rt_pad3;
+	unsigned char	rt_tos;
+	unsigned char	rt_class;
+	short		rt_pad4;
+	short		rt_metric;      /* +1 for binary compatibility! */
 	/* char * */ u32 rt_dev;        /* forcing the device at add    */
-	u32   		rt_mtu;         /* per route MTU/Window         */
-	u32   		rt_window;      /* Window clamping              */
+	u32		rt_mtu;         /* per route MTU/Window         */
+	u32		rt_window;      /* Window clamping              */
 	unsigned short  rt_irtt;        /* Initial RTT                  */
 };

@@ -2793,29 +2801,29 @@ static int routing_ioctl(struct net *net, struct socket *sock,

 	if (sock &amp;&amp; sock-&gt;sk &amp;&amp; sock-&gt;sk-&gt;sk_family == AF_INET6) { /* ipv6 */
 		struct in6_rtmsg32 __user *ur6 = argp;
-		ret = copy_from_user (&amp;r6.rtmsg_dst, &amp;(ur6-&gt;rtmsg_dst),
+		ret = copy_from_user(&amp;r6.rtmsg_dst, &amp;(ur6-&gt;rtmsg_dst),
 			3 * sizeof(struct in6_addr));
-		ret |= __get_user (r6.rtmsg_type, &amp;(ur6-&gt;rtmsg_type));
-		ret |= __get_user (r6.rtmsg_dst_len, &amp;(ur6-&gt;rtmsg_dst_len));
-		ret |= __get_user (r6.rtmsg_src_len, &amp;(ur6-&gt;rtmsg_src_len));
-		ret |= __get_user (r6.rtmsg_metric, &amp;(ur6-&gt;rtmsg_metric));
-		ret |= __get_user (r6.rtmsg_info, &amp;(ur6-&gt;rtmsg_info));
-		ret |= __get_user (r6.rtmsg_flags, &amp;(ur6-&gt;rtmsg_flags));
-		ret |= __get_user (r6.rtmsg_ifindex, &amp;(ur6-&gt;rtmsg_ifindex));
+		ret |= __get_user(r6.rtmsg_type, &amp;(ur6-&gt;rtmsg_type));
+		ret |= __get_user(r6.rtmsg_dst_len, &amp;(ur6-&gt;rtmsg_dst_len));
+		ret |= __get_user(r6.rtmsg_src_len, &amp;(ur6-&gt;rtmsg_src_len));
+		ret |= __get_user(r6.rtmsg_metric, &amp;(ur6-&gt;rtmsg_metric));
+		ret |= __get_user(r6.rtmsg_info, &amp;(ur6-&gt;rtmsg_info));
+		ret |= __get_user(r6.rtmsg_flags, &amp;(ur6-&gt;rtmsg_flags));
+		ret |= __get_user(r6.rtmsg_ifindex, &amp;(ur6-&gt;rtmsg_ifindex));

 		r = (void *) &amp;r6;
 	} else { /* ipv4 */
 		struct rtentry32 __user *ur4 = argp;
-		ret = copy_from_user (&amp;r4.rt_dst, &amp;(ur4-&gt;rt_dst),
+		ret = copy_from_user(&amp;r4.rt_dst, &amp;(ur4-&gt;rt_dst),
 					3 * sizeof(struct sockaddr));
-		ret |= __get_user (r4.rt_flags, &amp;(ur4-&gt;rt_flags));
-		ret |= __get_user (r4.rt_metric, &amp;(ur4-&gt;rt_metric));
-		ret |= __get_user (r4.rt_mtu, &amp;(ur4-&gt;rt_mtu));
-		ret |= __get_user (r4.rt_window, &amp;(ur4-&gt;rt_window));
-		ret |= __get_user (r4.rt_irtt, &amp;(ur4-&gt;rt_irtt));
-		ret |= __get_user (rtdev, &amp;(ur4-&gt;rt_dev));
+		ret |= __get_user(r4.rt_flags, &amp;(ur4-&gt;rt_flags));
+		ret |= __get_user(r4.rt_metric, &amp;(ur4-&gt;rt_metric));
+		ret |= __get_user(r4.rt_mtu, &amp;(ur4-&gt;rt_mtu));
+		ret |= __get_user(r4.rt_window, &amp;(ur4-&gt;rt_window));
+		ret |= __get_user(r4.rt_irtt, &amp;(ur4-&gt;rt_irtt));
+		ret |= __get_user(rtdev, &amp;(ur4-&gt;rt_dev));
 		if (rtdev) {
-			ret |= copy_from_user (devname, compat_ptr(rtdev), 15);
+			ret |= copy_from_user(devname, compat_ptr(rtdev), 15);
 			r4.rt_dev = devname; devname[15] = 0;
 		} else
 			r4.rt_dev = NULL;
@@ -2828,9 +2836,9 @@ static int routing_ioctl(struct net *net, struct socket *sock,
 		goto out;
 	}

-	set_fs (KERNEL_DS);
+	set_fs(KERNEL_DS);
 	ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r);
-	set_fs (old_fs);
+	set_fs(old_fs);

 out:
 	return ret;
@@ -2993,11 +3001,13 @@ int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen)
 {
 	return sock-&gt;ops-&gt;bind(sock, addr, addrlen);
 }
+EXPORT_SYMBOL(kernel_bind);

 int kernel_listen(struct socket *sock, int backlog)
 {
 	return sock-&gt;ops-&gt;listen(sock, backlog);
 }
+EXPORT_SYMBOL(kernel_listen);

 int kernel_accept(struct socket *sock, struct socket **newsock, int flags)
 {
@@ -3022,24 +3032,28 @@ int kernel_accept(struct socket *sock, struct socket **newsock, int flags)
 done:
 	return err;
 }
+EXPORT_SYMBOL(kernel_accept);

 int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
 		   int flags)
 {
 	return sock-&gt;ops-&gt;connect(sock, addr, addrlen, flags);
 }
+EXPORT_SYMBOL(kernel_connect);

 int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
 			 int *addrlen)
 {
 	return sock-&gt;ops-&gt;getname(sock, addr, addrlen, 0);
 }
+EXPORT_SYMBOL(kernel_getsockname);

 int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
 			 int *addrlen)
 {
 	return sock-&gt;ops-&gt;getname(sock, addr, addrlen, 1);
 }
+EXPORT_SYMBOL(kernel_getpeername);

 int kernel_getsockopt(struct socket *sock, int level, int optname,
 			char *optval, int *optlen)
@@ -3056,6 +3070,7 @@ int kernel_getsockopt(struct socket *sock, int level, int optname,
 	set_fs(oldfs);
 	return err;
 }
+EXPORT_SYMBOL(kernel_getsockopt);

 int kernel_setsockopt(struct socket *sock, int level, int optname,
 			char *optval, unsigned int optlen)
@@ -3072,6 +3087,7 @@ int kernel_setsockopt(struct socket *sock, int level, int optname,
 	set_fs(oldfs);
 	return err;
 }
+EXPORT_SYMBOL(kernel_setsockopt);

 int kernel_sendpage(struct socket *sock, struct page *page, int offset,
 		    size_t size, int flags)
@@ -3083,6 +3099,7 @@ int kernel_sendpage(struct socket *sock, struct page *page, int offset,

 	return sock_no_sendpage(sock, page, offset, size, flags);
 }
+EXPORT_SYMBOL(kernel_sendpage);

 int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg)
 {
@@ -3095,33 +3112,11 @@ int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg)

 	return err;
 }
+EXPORT_SYMBOL(kernel_sock_ioctl);

 int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how)
 {
 	return sock-&gt;ops-&gt;shutdown(sock, how);
 }
-
-EXPORT_SYMBOL(sock_create);
-EXPORT_SYMBOL(sock_create_kern);
-EXPORT_SYMBOL(sock_create_lite);
-EXPORT_SYMBOL(sock_map_fd);
-EXPORT_SYMBOL(sock_recvmsg);
-EXPORT_SYMBOL(sock_register);
-EXPORT_SYMBOL(sock_release);
-EXPORT_SYMBOL(sock_sendmsg);
-EXPORT_SYMBOL(sock_unregister);
-EXPORT_SYMBOL(sock_wake_async);
-EXPORT_SYMBOL(sockfd_lookup);
-EXPORT_SYMBOL(kernel_sendmsg);
-EXPORT_SYMBOL(kernel_recvmsg);
-EXPORT_SYMBOL(kernel_bind);
-EXPORT_SYMBOL(kernel_listen);
-EXPORT_SYMBOL(kernel_accept);
-EXPORT_SYMBOL(kernel_connect);
-EXPORT_SYMBOL(kernel_getsockname);
-EXPORT_SYMBOL(kernel_getpeername);
-EXPORT_SYMBOL(kernel_getsockopt);
-EXPORT_SYMBOL(kernel_setsockopt);
-EXPORT_SYMBOL(kernel_sendpage);
-EXPORT_SYMBOL(kernel_sock_ioctl);
 EXPORT_SYMBOL(kernel_sock_shutdown);
+
--
1.7.0.4
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
From: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Date: Thu, 3 Jun 2010 04:29:41 +0000
Subject: [PATCH 2/3] net: net/socket.c and net/compat.c cleanups

cleanup patch, to match modern coding style.

Signed-off-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
---
 net/compat.c |   47 ++++++++---------
 net/socket.c |  165 ++++++++++++++++++++++++++++------------------------------
 2 files changed, 102 insertions(+), 110 deletions(-)

diff --git a/net/compat.c b/net/compat.c
index 1cf7590..63d260e 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -81,7 +81,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
 	int tot_len;

 	if (kern_msg-&gt;msg_namelen) {
-		if (mode==VERIFY_READ) {
+		if (mode == VERIFY_READ) {
 			int err = move_addr_to_kernel(kern_msg-&gt;msg_name,
 						      kern_msg-&gt;msg_namelen,
 						      kern_address);
@@ -354,7 +354,7 @@ static int do_set_attach_filter(struct socket *sock, int level, int optname,
 static int do_set_sock_timeout(struct socket *sock, int level,
 		int optname, char __user *optval, unsigned int optlen)
 {
-	struct compat_timeval __user *up = (struct compat_timeval __user *) optval;
+	struct compat_timeval __user *up = (struct compat_timeval __user *)optval;
 	struct timeval ktime;
 	mm_segment_t old_fs;
 	int err;
@@ -367,7 +367,7 @@ static int do_set_sock_timeout(struct socket *sock, int level,
 		return -EFAULT;
 	old_fs = get_fs();
 	set_fs(KERNEL_DS);
-	err = sock_setsockopt(sock, level, optname, (char *) &amp;ktime, sizeof(ktime));
+	err = sock_setsockopt(sock, level, optname, (char *)&amp;ktime, sizeof(ktime));
 	set_fs(old_fs);

 	return err;
@@ -389,11 +389,10 @@ asmlinkage long compat_sys_setsockopt(int fd, int level, int optname,
 				char __user *optval, unsigned int optlen)
 {
 	int err;
-	struct socket *sock;
+	struct socket *sock = sockfd_lookup(fd, &amp;err);

-	if ((sock = sockfd_lookup(fd, &amp;err))!=NULL)
-	{
-		err = security_socket_setsockopt(sock,level,optname);
+	if (sock) {
+		err = security_socket_setsockopt(sock, level, optname);
 		if (err) {
 			sockfd_put(sock);
 			return err;
@@ -453,7 +452,7 @@ static int compat_sock_getsockopt(struct socket *sock, int level, int optname,
 int compat_sock_get_timestamp(struct sock *sk, struct timeval __user *userstamp)
 {
 	struct compat_timeval __user *ctv =
-			(struct compat_timeval __user*) userstamp;
+			(struct compat_timeval __user *) userstamp;
 	int err = -ENOENT;
 	struct timeval tv;

@@ -477,7 +476,7 @@ EXPORT_SYMBOL(compat_sock_get_timestamp);
 int compat_sock_get_timestampns(struct sock *sk, struct timespec __user *userstamp)
 {
 	struct compat_timespec __user *ctv =
-			(struct compat_timespec __user*) userstamp;
+			(struct compat_timespec __user *) userstamp;
 	int err = -ENOENT;
 	struct timespec ts;

@@ -502,12 +501,10 @@ asmlinkage long compat_sys_getsockopt(int fd, int level, int optname,
 				char __user *optval, int __user *optlen)
 {
 	int err;
-	struct socket *sock;
+	struct socket *sock = sockfd_lookup(fd, &amp;err);

-	if ((sock = sockfd_lookup(fd, &amp;err))!=NULL)
-	{
-		err = security_socket_getsockopt(sock, level,
-							   optname);
+	if (sock) {
+		err = security_socket_getsockopt(sock, level, optname);
 		if (err) {
 			sockfd_put(sock);
 			return err;
@@ -557,7 +554,7 @@ struct compat_group_filter {

 int compat_mc_setsockopt(struct sock *sock, int level, int optname,
 	char __user *optval, unsigned int optlen,
-	int (*setsockopt)(struct sock *,int,int,char __user *,unsigned int))
+	int (*setsockopt)(struct sock *, int, int, char __user *, unsigned int))
 {
 	char __user	*koptval = optval;
 	int		koptlen = optlen;
@@ -640,12 +637,11 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
 	}
 	return setsockopt(sock, level, optname, koptval, koptlen);
 }
-
 EXPORT_SYMBOL(compat_mc_setsockopt);

 int compat_mc_getsockopt(struct sock *sock, int level, int optname,
 	char __user *optval, int __user *optlen,
-	int (*getsockopt)(struct sock *,int,int,char __user *,int __user *))
+	int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
 {
 	struct compat_group_filter __user *gf32 = (void *)optval;
 	struct group_filter __user *kgf;
@@ -681,7 +677,7 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname,
 	    __put_user(interface, &amp;kgf-&gt;gf_interface) ||
 	    __put_user(fmode, &amp;kgf-&gt;gf_fmode) ||
 	    __put_user(numsrc, &amp;kgf-&gt;gf_numsrc) ||
-	    copy_in_user(&amp;kgf-&gt;gf_group,&amp;gf32-&gt;gf_group,sizeof(kgf-&gt;gf_group)))
+	    copy_in_user(&amp;kgf-&gt;gf_group, &amp;gf32-&gt;gf_group, sizeof(kgf-&gt;gf_group)))
 		return -EFAULT;

 	err = getsockopt(sock, level, optname, (char __user *)kgf, koptlen);
@@ -714,21 +710,22 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname,
 		copylen = numsrc * sizeof(gf32-&gt;gf_slist[0]);
 		if (copylen &gt; klen)
 			copylen = klen;
-	        if (copy_in_user(gf32-&gt;gf_slist, kgf-&gt;gf_slist, copylen))
+		if (copy_in_user(gf32-&gt;gf_slist, kgf-&gt;gf_slist, copylen))
 			return -EFAULT;
 	}
 	return err;
 }
-
 EXPORT_SYMBOL(compat_mc_getsockopt);

 /* Argument list sizes for compat_sys_socketcall */
 #define AL(x) ((x) * sizeof(u32))
-static unsigned char nas[20]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
-				AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
-				AL(6),AL(2),AL(5),AL(5),AL(3),AL(3),
-				AL(4),AL(5)};
+static unsigned char nas[20] = {
+	AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
+	AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
+	AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
+	AL(4), AL(5)
+};
 #undef AL

 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, unsigned flags)
@@ -827,7 +824,7 @@ asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
 					  compat_ptr(a[4]), compat_ptr(a[5]));
 		break;
 	case SYS_SHUTDOWN:
-		ret = sys_shutdown(a0,a1);
+		ret = sys_shutdown(a0, a1);
 		break;
 	case SYS_SETSOCKOPT:
 		ret = compat_sys_setsockopt(a0, a1, a[2],
diff --git a/net/socket.c b/net/socket.c
index 367d547..b63c051 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -124,7 +124,7 @@ static int sock_fasync(int fd, struct file *filp, int on);
 static ssize_t sock_sendpage(struct file *file, struct page *page,
 			     int offset, size_t size, loff_t *ppos, int more);
 static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
-			        struct pipe_inode_info *pipe, size_t len,
+				struct pipe_inode_info *pipe, size_t len,
 				unsigned int flags);

 /*
@@ -162,7 +162,7 @@ static const struct net_proto_family *net_families[NPROTO] __read_mostly;
  *	Statistics counters of the socket lists
  */

-static DEFINE_PER_CPU(int, sockets_in_use) = 0;
+static DEFINE_PER_CPU(int, sockets_in_use);

 /*
  * Support routines.
@@ -309,9 +309,9 @@ static int init_inodecache(void)
 }

 static const struct super_operations sockfs_ops = {
-	.alloc_inode =	sock_alloc_inode,
-	.destroy_inode =sock_destroy_inode,
-	.statfs =	simple_statfs,
+	.alloc_inode	= sock_alloc_inode,
+	.destroy_inode	= sock_destroy_inode,
+	.statfs		= simple_statfs,
 };

 static int sockfs_get_sb(struct file_system_type *fs_type,
@@ -411,6 +411,7 @@ int sock_map_fd(struct socket *sock, int flags)

 	return fd;
 }
+EXPORT_SYMBOL(sock_map_fd);

 static struct socket *sock_from_file(struct file *file, int *err)
 {
@@ -422,7 +423,7 @@ static struct socket *sock_from_file(struct file *file, int *err)
 }

 /**
- *	sockfd_lookup	- 	Go from a file number to its socket slot
+ *	sockfd_lookup - Go from a file number to its socket slot
  *	@fd: file handle
  *	@err: pointer to an error code return
  *
@@ -450,6 +451,7 @@ struct socket *sockfd_lookup(int fd, int *err)
 		fput(file);
 	return sock;
 }
+EXPORT_SYMBOL(sockfd_lookup);

 static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed)
 {
@@ -540,6 +542,7 @@ void sock_release(struct socket *sock)
 	}
 	sock-&gt;file = NULL;
 }
+EXPORT_SYMBOL(sock_release);

 int sock_tx_timestamp(struct msghdr *msg, struct sock *sk,
 		      union skb_shared_tx *shtx)
@@ -586,6 +589,7 @@ int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 		ret = wait_on_sync_kiocb(&amp;iocb);
 	return ret;
 }
+EXPORT_SYMBOL(sock_sendmsg);

 int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
 		   struct kvec *vec, size_t num, size_t size)
@@ -604,6 +608,7 @@ int kernel_sendmsg(struct socket *sock, struct msghdr *msg,
 	set_fs(oldfs);
 	return result;
 }
+EXPORT_SYMBOL(kernel_sendmsg);

 static int ktime2ts(ktime_t kt, struct timespec *ts)
 {
@@ -664,7 +669,6 @@ void __sock_recv_timestamp(struct msghdr *msg, struct sock *sk,
 		put_cmsg(msg, SOL_SOCKET,
 			 SCM_TIMESTAMPING, sizeof(ts), &amp;ts);
 }
-
 EXPORT_SYMBOL_GPL(__sock_recv_timestamp);

 inline void sock_recv_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
@@ -720,6 +724,7 @@ int sock_recvmsg(struct socket *sock, struct msghdr *msg,
 		ret = wait_on_sync_kiocb(&amp;iocb);
 	return ret;
 }
+EXPORT_SYMBOL(sock_recvmsg);

 static int sock_recvmsg_nosec(struct socket *sock, struct msghdr *msg,
 			      size_t size, int flags)
@@ -752,6 +757,7 @@ int kernel_recvmsg(struct socket *sock, struct msghdr *msg,
 	set_fs(oldfs);
 	return result;
 }
+EXPORT_SYMBOL(kernel_recvmsg);

 static void sock_aio_dtor(struct kiocb *iocb)
 {
@@ -774,7 +780,7 @@ static ssize_t sock_sendpage(struct file *file, struct page *page,
 }

 static ssize_t sock_splice_read(struct file *file, loff_t *ppos,
-			        struct pipe_inode_info *pipe, size_t len,
+				struct pipe_inode_info *pipe, size_t len,
 				unsigned int flags)
 {
 	struct socket *sock = file-&gt;private_data;
@@ -887,7 +893,7 @@ static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,
  */

 static DEFINE_MUTEX(br_ioctl_mutex);
-static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg) = NULL;
+static int (*br_ioctl_hook) (struct net *, unsigned int cmd, void __user *arg);

 void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *))
 {
@@ -895,7 +901,6 @@ void brioctl_set(int (*hook) (struct net *, unsigned int, void __user *))
 	br_ioctl_hook = hook;
 	mutex_unlock(&amp;br_ioctl_mutex);
 }
-
 EXPORT_SYMBOL(brioctl_set);

 static DEFINE_MUTEX(vlan_ioctl_mutex);
@@ -907,7 +912,6 @@ void vlan_ioctl_set(int (*hook) (struct net *, void __user *))
 	vlan_ioctl_hook = hook;
 	mutex_unlock(&amp;vlan_ioctl_mutex);
 }
-
 EXPORT_SYMBOL(vlan_ioctl_set);

 static DEFINE_MUTEX(dlci_ioctl_mutex);
@@ -919,7 +923,6 @@ void dlci_ioctl_set(int (*hook) (unsigned int, void __user *))
 	dlci_ioctl_hook = hook;
 	mutex_unlock(&amp;dlci_ioctl_mutex);
 }
-
 EXPORT_SYMBOL(dlci_ioctl_set);

 static long sock_do_ioctl(struct net *net, struct socket *sock,
@@ -1047,6 +1050,7 @@ out_release:
 	sock = NULL;
 	goto out;
 }
+EXPORT_SYMBOL(sock_create_lite);

 /* No kernel lock held - perfect */
 static unsigned int sock_poll(struct file *file, poll_table *wait)
@@ -1147,6 +1151,7 @@ call_kill:
 	rcu_read_unlock();
 	return 0;
 }
+EXPORT_SYMBOL(sock_wake_async);

 static int __sock_create(struct net *net, int family, int type, int protocol,
 			 struct socket **res, int kern)
@@ -1265,11 +1270,13 @@ int sock_create(int family, int type, int protocol, struct socket **res)
 {
 	return __sock_create(current-&gt;nsproxy-&gt;net_ns, family, type, protocol, res, 0);
 }
+EXPORT_SYMBOL(sock_create);

 int sock_create_kern(int family, int type, int protocol, struct socket **res)
 {
 	return __sock_create(&amp;init_net, family, type, protocol, res, 1);
 }
+EXPORT_SYMBOL(sock_create_kern);

 SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol)
 {
@@ -1474,7 +1481,8 @@ SYSCALL_DEFINE4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr,
 		goto out;

 	err = -ENFILE;
-	if (!(newsock = sock_alloc()))
+	newsock = sock_alloc();
+	if (!newsock)
 		goto out_put;

 	newsock-&gt;type = sock-&gt;type;
@@ -1861,8 +1869,7 @@ SYSCALL_DEFINE3(sendmsg, int, fd, struct msghdr __user *, msg, unsigned, flags)
 	if (MSG_CMSG_COMPAT &amp; flags) {
 		if (get_compat_msghdr(&amp;msg_sys, msg_compat))
 			return -EFAULT;
-	}
-	else if (copy_from_user(&amp;msg_sys, msg, sizeof(struct msghdr)))
+	} else if (copy_from_user(&amp;msg_sys, msg, sizeof(struct msghdr)))
 		return -EFAULT;

 	sock = sockfd_lookup_light(fd, &amp;err, &amp;fput_needed);
@@ -1964,8 +1971,7 @@ static int __sys_recvmsg(struct socket *sock, struct msghdr __user *msg,
 	if (MSG_CMSG_COMPAT &amp; flags) {
 		if (get_compat_msghdr(msg_sys, msg_compat))
 			return -EFAULT;
-	}
-	else if (copy_from_user(msg_sys, msg, sizeof(struct msghdr)))
+	} else if (copy_from_user(msg_sys, msg, sizeof(struct msghdr)))
 		return -EFAULT;

 	err = -EMSGSIZE;
@@ -2191,10 +2197,10 @@ SYSCALL_DEFINE5(recvmmsg, int, fd, struct mmsghdr __user *, mmsg,
 /* Argument list sizes for sys_socketcall */
 #define AL(x) ((x) * sizeof(unsigned long))
 static const unsigned char nargs[20] = {
-	AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
-	AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
-	AL(6),AL(2),AL(5),AL(5),AL(3),AL(3),
-	AL(4),AL(5)
+	AL(0), AL(3), AL(3), AL(3), AL(2), AL(3),
+	AL(3), AL(3), AL(4), AL(4), AL(4), AL(6),
+	AL(6), AL(2), AL(5), AL(5), AL(3), AL(3),
+	AL(4), AL(5)
 };

 #undef AL
@@ -2340,6 +2346,7 @@ int sock_register(const struct net_proto_family *ops)
 	printk(KERN_INFO "NET: Registered protocol family %d\n", ops-&gt;family);
 	return err;
 }
+EXPORT_SYMBOL(sock_register);

 /**
  *	sock_unregister - remove a protocol handler
@@ -2366,6 +2373,7 @@ void sock_unregister(int family)

 	printk(KERN_INFO "NET: Unregistered protocol family %d\n", family);
 }
+EXPORT_SYMBOL(sock_unregister);

 static int __init sock_init(void)
 {
@@ -2490,13 +2498,13 @@ static int dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32)
 		ifc.ifc_req = NULL;
 		uifc = compat_alloc_user_space(sizeof(struct ifconf));
 	} else {
-		size_t len =((ifc32.ifc_len / sizeof (struct compat_ifreq)) + 1) *
-			sizeof (struct ifreq);
+		size_t len = ((ifc32.ifc_len / sizeof(struct compat_ifreq)) + 1) *
+			sizeof(struct ifreq);
 		uifc = compat_alloc_user_space(sizeof(struct ifconf) + len);
 		ifc.ifc_len = len;
 		ifr = ifc.ifc_req = (void __user *)(uifc + 1);
 		ifr32 = compat_ptr(ifc32.ifcbuf);
-		for (i = 0; i &lt; ifc32.ifc_len; i += sizeof (struct compat_ifreq)) {
+		for (i = 0; i &lt; ifc32.ifc_len; i += sizeof(struct compat_ifreq)) {
 			if (copy_in_user(ifr, ifr32, sizeof(struct compat_ifreq)))
 				return -EFAULT;
 			ifr++;
@@ -2516,9 +2524,9 @@ static int dev_ifconf(struct net *net, struct compat_ifconf __user *uifc32)
 	ifr = ifc.ifc_req;
 	ifr32 = compat_ptr(ifc32.ifcbuf);
 	for (i = 0, j = 0;
-             i + sizeof (struct compat_ifreq) &lt;= ifc32.ifc_len &amp;&amp; j &lt; ifc.ifc_len;
-	     i += sizeof (struct compat_ifreq), j += sizeof (struct ifreq)) {
-		if (copy_in_user(ifr32, ifr, sizeof (struct compat_ifreq)))
+	     i + sizeof(struct compat_ifreq) &lt;= ifc32.ifc_len &amp;&amp; j &lt; ifc.ifc_len;
+	     i += sizeof(struct compat_ifreq), j += sizeof(struct ifreq)) {
+		if (copy_in_user(ifr32, ifr, sizeof(struct compat_ifreq)))
 			return -EFAULT;
 		ifr32++;
 		ifr++;
@@ -2567,7 +2575,7 @@ static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32
 	compat_uptr_t uptr32;
 	struct ifreq __user *uifr;

-	uifr = compat_alloc_user_space(sizeof (*uifr));
+	uifr = compat_alloc_user_space(sizeof(*uifr));
 	if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq)))
 		return -EFAULT;

@@ -2601,9 +2609,9 @@ static int bond_ioctl(struct net *net, unsigned int cmd,
 			return -EFAULT;

 		old_fs = get_fs();
-		set_fs (KERNEL_DS);
+		set_fs(KERNEL_DS);
 		err = dev_ioctl(net, cmd, &amp;kifr);
-		set_fs (old_fs);
+		set_fs(old_fs);

 		return err;
 	case SIOCBONDSLAVEINFOQUERY:
@@ -2710,9 +2718,9 @@ static int compat_sioc_ifmap(struct net *net, unsigned int cmd,
 		return -EFAULT;

 	old_fs = get_fs();
-	set_fs (KERNEL_DS);
+	set_fs(KERNEL_DS);
 	err = dev_ioctl(net, cmd, (void __user *)&amp;ifr);
-	set_fs (old_fs);
+	set_fs(old_fs);

 	if (cmd == SIOCGIFMAP &amp;&amp; !err) {
 		err = copy_to_user(uifr32, &amp;ifr, sizeof(ifr.ifr_name));
@@ -2734,7 +2742,7 @@ static int compat_siocshwtstamp(struct net *net, struct compat_ifreq __user *uif
 	compat_uptr_t uptr32;
 	struct ifreq __user *uifr;

-	uifr = compat_alloc_user_space(sizeof (*uifr));
+	uifr = compat_alloc_user_space(sizeof(*uifr));
 	if (copy_in_user(uifr, uifr32, sizeof(struct compat_ifreq)))
 		return -EFAULT;

@@ -2750,20 +2758,20 @@ static int compat_siocshwtstamp(struct net *net, struct compat_ifreq __user *uif
 }

 struct rtentry32 {
-	u32   		rt_pad1;
+	u32		rt_pad1;
 	struct sockaddr rt_dst;         /* target address               */
 	struct sockaddr rt_gateway;     /* gateway addr (RTF_GATEWAY)   */
 	struct sockaddr rt_genmask;     /* target network mask (IP)     */
-	unsigned short  rt_flags;
-	short           rt_pad2;
-	u32   		rt_pad3;
-	unsigned char   rt_tos;
-	unsigned char   rt_class;
-	short           rt_pad4;
-	short           rt_metric;      /* +1 for binary compatibility! */
+	unsigned short	rt_flags;
+	short		rt_pad2;
+	u32		rt_pad3;
+	unsigned char	rt_tos;
+	unsigned char	rt_class;
+	short		rt_pad4;
+	short		rt_metric;      /* +1 for binary compatibility! */
 	/* char * */ u32 rt_dev;        /* forcing the device at add    */
-	u32   		rt_mtu;         /* per route MTU/Window         */
-	u32   		rt_window;      /* Window clamping              */
+	u32		rt_mtu;         /* per route MTU/Window         */
+	u32		rt_window;      /* Window clamping              */
 	unsigned short  rt_irtt;        /* Initial RTT                  */
 };

@@ -2793,29 +2801,29 @@ static int routing_ioctl(struct net *net, struct socket *sock,

 	if (sock &amp;&amp; sock-&gt;sk &amp;&amp; sock-&gt;sk-&gt;sk_family == AF_INET6) { /* ipv6 */
 		struct in6_rtmsg32 __user *ur6 = argp;
-		ret = copy_from_user (&amp;r6.rtmsg_dst, &amp;(ur6-&gt;rtmsg_dst),
+		ret = copy_from_user(&amp;r6.rtmsg_dst, &amp;(ur6-&gt;rtmsg_dst),
 			3 * sizeof(struct in6_addr));
-		ret |= __get_user (r6.rtmsg_type, &amp;(ur6-&gt;rtmsg_type));
-		ret |= __get_user (r6.rtmsg_dst_len, &amp;(ur6-&gt;rtmsg_dst_len));
-		ret |= __get_user (r6.rtmsg_src_len, &amp;(ur6-&gt;rtmsg_src_len));
-		ret |= __get_user (r6.rtmsg_metric, &amp;(ur6-&gt;rtmsg_metric));
-		ret |= __get_user (r6.rtmsg_info, &amp;(ur6-&gt;rtmsg_info));
-		ret |= __get_user (r6.rtmsg_flags, &amp;(ur6-&gt;rtmsg_flags));
-		ret |= __get_user (r6.rtmsg_ifindex, &amp;(ur6-&gt;rtmsg_ifindex));
+		ret |= __get_user(r6.rtmsg_type, &amp;(ur6-&gt;rtmsg_type));
+		ret |= __get_user(r6.rtmsg_dst_len, &amp;(ur6-&gt;rtmsg_dst_len));
+		ret |= __get_user(r6.rtmsg_src_len, &amp;(ur6-&gt;rtmsg_src_len));
+		ret |= __get_user(r6.rtmsg_metric, &amp;(ur6-&gt;rtmsg_metric));
+		ret |= __get_user(r6.rtmsg_info, &amp;(ur6-&gt;rtmsg_info));
+		ret |= __get_user(r6.rtmsg_flags, &amp;(ur6-&gt;rtmsg_flags));
+		ret |= __get_user(r6.rtmsg_ifindex, &amp;(ur6-&gt;rtmsg_ifindex));

 		r = (void *) &amp;r6;
 	} else { /* ipv4 */
 		struct rtentry32 __user *ur4 = argp;
-		ret = copy_from_user (&amp;r4.rt_dst, &amp;(ur4-&gt;rt_dst),
+		ret = copy_from_user(&amp;r4.rt_dst, &amp;(ur4-&gt;rt_dst),
 					3 * sizeof(struct sockaddr));
-		ret |= __get_user (r4.rt_flags, &amp;(ur4-&gt;rt_flags));
-		ret |= __get_user (r4.rt_metric, &amp;(ur4-&gt;rt_metric));
-		ret |= __get_user (r4.rt_mtu, &amp;(ur4-&gt;rt_mtu));
-		ret |= __get_user (r4.rt_window, &amp;(ur4-&gt;rt_window));
-		ret |= __get_user (r4.rt_irtt, &amp;(ur4-&gt;rt_irtt));
-		ret |= __get_user (rtdev, &amp;(ur4-&gt;rt_dev));
+		ret |= __get_user(r4.rt_flags, &amp;(ur4-&gt;rt_flags));
+		ret |= __get_user(r4.rt_metric, &amp;(ur4-&gt;rt_metric));
+		ret |= __get_user(r4.rt_mtu, &amp;(ur4-&gt;rt_mtu));
+		ret |= __get_user(r4.rt_window, &amp;(ur4-&gt;rt_window));
+		ret |= __get_user(r4.rt_irtt, &amp;(ur4-&gt;rt_irtt));
+		ret |= __get_user(rtdev, &amp;(ur4-&gt;rt_dev));
 		if (rtdev) {
-			ret |= copy_from_user (devname, compat_ptr(rtdev), 15);
+			ret |= copy_from_user(devname, compat_ptr(rtdev), 15);
 			r4.rt_dev = devname; devname[15] = 0;
 		} else
 			r4.rt_dev = NULL;
@@ -2828,9 +2836,9 @@ static int routing_ioctl(struct net *net, struct socket *sock,
 		goto out;
 	}

-	set_fs (KERNEL_DS);
+	set_fs(KERNEL_DS);
 	ret = sock_do_ioctl(net, sock, cmd, (unsigned long) r);
-	set_fs (old_fs);
+	set_fs(old_fs);

 out:
 	return ret;
@@ -2993,11 +3001,13 @@ int kernel_bind(struct socket *sock, struct sockaddr *addr, int addrlen)
 {
 	return sock-&gt;ops-&gt;bind(sock, addr, addrlen);
 }
+EXPORT_SYMBOL(kernel_bind);

 int kernel_listen(struct socket *sock, int backlog)
 {
 	return sock-&gt;ops-&gt;listen(sock, backlog);
 }
+EXPORT_SYMBOL(kernel_listen);

 int kernel_accept(struct socket *sock, struct socket **newsock, int flags)
 {
@@ -3022,24 +3032,28 @@ int kernel_accept(struct socket *sock, struct socket **newsock, int flags)
 done:
 	return err;
 }
+EXPORT_SYMBOL(kernel_accept);

 int kernel_connect(struct socket *sock, struct sockaddr *addr, int addrlen,
 		   int flags)
 {
 	return sock-&gt;ops-&gt;connect(sock, addr, addrlen, flags);
 }
+EXPORT_SYMBOL(kernel_connect);

 int kernel_getsockname(struct socket *sock, struct sockaddr *addr,
 			 int *addrlen)
 {
 	return sock-&gt;ops-&gt;getname(sock, addr, addrlen, 0);
 }
+EXPORT_SYMBOL(kernel_getsockname);

 int kernel_getpeername(struct socket *sock, struct sockaddr *addr,
 			 int *addrlen)
 {
 	return sock-&gt;ops-&gt;getname(sock, addr, addrlen, 1);
 }
+EXPORT_SYMBOL(kernel_getpeername);

 int kernel_getsockopt(struct socket *sock, int level, int optname,
 			char *optval, int *optlen)
@@ -3056,6 +3070,7 @@ int kernel_getsockopt(struct socket *sock, int level, int optname,
 	set_fs(oldfs);
 	return err;
 }
+EXPORT_SYMBOL(kernel_getsockopt);

 int kernel_setsockopt(struct socket *sock, int level, int optname,
 			char *optval, unsigned int optlen)
@@ -3072,6 +3087,7 @@ int kernel_setsockopt(struct socket *sock, int level, int optname,
 	set_fs(oldfs);
 	return err;
 }
+EXPORT_SYMBOL(kernel_setsockopt);

 int kernel_sendpage(struct socket *sock, struct page *page, int offset,
 		    size_t size, int flags)
@@ -3083,6 +3099,7 @@ int kernel_sendpage(struct socket *sock, struct page *page, int offset,

 	return sock_no_sendpage(sock, page, offset, size, flags);
 }
+EXPORT_SYMBOL(kernel_sendpage);

 int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg)
 {
@@ -3095,33 +3112,11 @@ int kernel_sock_ioctl(struct socket *sock, int cmd, unsigned long arg)

 	return err;
 }
+EXPORT_SYMBOL(kernel_sock_ioctl);

 int kernel_sock_shutdown(struct socket *sock, enum sock_shutdown_cmd how)
 {
 	return sock-&gt;ops-&gt;shutdown(sock, how);
 }
-
-EXPORT_SYMBOL(sock_create);
-EXPORT_SYMBOL(sock_create_kern);
-EXPORT_SYMBOL(sock_create_lite);
-EXPORT_SYMBOL(sock_map_fd);
-EXPORT_SYMBOL(sock_recvmsg);
-EXPORT_SYMBOL(sock_register);
-EXPORT_SYMBOL(sock_release);
-EXPORT_SYMBOL(sock_sendmsg);
-EXPORT_SYMBOL(sock_unregister);
-EXPORT_SYMBOL(sock_wake_async);
-EXPORT_SYMBOL(sockfd_lookup);
-EXPORT_SYMBOL(kernel_sendmsg);
-EXPORT_SYMBOL(kernel_recvmsg);
-EXPORT_SYMBOL(kernel_bind);
-EXPORT_SYMBOL(kernel_listen);
-EXPORT_SYMBOL(kernel_accept);
-EXPORT_SYMBOL(kernel_connect);
-EXPORT_SYMBOL(kernel_getsockname);
-EXPORT_SYMBOL(kernel_getpeername);
-EXPORT_SYMBOL(kernel_getsockopt);
-EXPORT_SYMBOL(kernel_setsockopt);
-EXPORT_SYMBOL(kernel_sendpage);
-EXPORT_SYMBOL(kernel_sock_ioctl);
 EXPORT_SYMBOL(kernel_sock_shutdown);
+
--
1.7.0.4
</pre>
</div>
</content>
</entry>
<entry>
<title>net: use __packed annotation</title>
<updated>2010-06-03T10:21:52+00:00</updated>
<author>
<name>Eric Dumazet</name>
<email>eric.dumazet@gmail.com</email>
</author>
<published>2010-06-03T10:21:52+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=bc10502dba37d3b210efd9f3867212298f13b78e'/>
<id>bc10502dba37d3b210efd9f3867212298f13b78e</id>
<content type='text'>
cleanup patch.

Use new __packed annotation in net/ and include/
(except netfilter)

Signed-off-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
cleanup patch.

Use new __packed annotation in net/ and include/
(except netfilter)

Signed-off-by: Eric Dumazet &lt;eric.dumazet@gmail.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</pre>
</div>
</content>
</entry>
</feed>
