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linux-sg2042/drivers/isdn/mISDN/socket.c

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Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
/*
*
* Author Karsten Keil <kkeil@novell.com>
*
* Copyright 2008 by Karsten Keil <kkeil@novell.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/mISDNif.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
#include <linux/slab.h>
drivers/isdn: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required. In preparation of the module.h usage cleanup, call out the header that we need to get EXPORT_SYMBOL variants and THIS_MODULE into scope. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-07-11 00:23:16 +08:00
#include <linux/export.h>
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
#include "core.h"
mISDN: consistently define 'debug' as '*u_int' Impact: change data type for variable 'debug' from *int to *u_int, same for the argument type of mISDN_inittimer In "core.h" mISDN_inittimer is declared with the argument type "*u_int", make the definition in "timerdev.c" match this. This fixes also this warnings: drivers/isdn/mISDN/layer1.c:391:8: warning: incorrect type in assignment (different signedness) drivers/isdn/mISDN/layer1.c:391:8: expected int *static [toplevel] debug drivers/isdn/mISDN/layer1.c:391:8: got unsigned int [usertype] *deb drivers/isdn/mISDN/layer2.c:2200:8: warning: incorrect type in assignment (different signedness) drivers/isdn/mISDN/layer2.c:2200:8: expected int *static [toplevel] debug drivers/isdn/mISDN/layer2.c:2200:8: got unsigned int [usertype] *deb drivers/isdn/mISDN/socket.c:769:8: warning: incorrect type in assignment (different signedness) drivers/isdn/mISDN/socket.c:769:8: expected int *static [toplevel] debug drivers/isdn/mISDN/socket.c:769:8: got unsigned int [usertype] *deb Signed-off-by: Hannes Eder <hannes@hanneseder.net> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-13 13:13:45 +08:00
static u_int *debug;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
static struct proto mISDN_proto = {
.name = "misdn",
.owner = THIS_MODULE,
.obj_size = sizeof(struct mISDN_sock)
};
#define _pms(sk) ((struct mISDN_sock *)sk)
static struct mISDN_sock_list data_sockets = {
.lock = __RW_LOCK_UNLOCKED(data_sockets.lock)
};
static struct mISDN_sock_list base_sockets = {
.lock = __RW_LOCK_UNLOCKED(base_sockets.lock)
};
#define L2_HEADER_LEN 4
static inline struct sk_buff *
_l2_alloc_skb(unsigned int len, gfp_t gfp_mask)
{
struct sk_buff *skb;
skb = alloc_skb(len + L2_HEADER_LEN, gfp_mask);
if (likely(skb))
skb_reserve(skb, L2_HEADER_LEN);
return skb;
}
static void
mISDN_sock_link(struct mISDN_sock_list *l, struct sock *sk)
{
write_lock_bh(&l->lock);
sk_add_node(sk, &l->head);
write_unlock_bh(&l->lock);
}
static void mISDN_sock_unlink(struct mISDN_sock_list *l, struct sock *sk)
{
write_lock_bh(&l->lock);
sk_del_node_init(sk);
write_unlock_bh(&l->lock);
}
static int
mISDN_send(struct mISDNchannel *ch, struct sk_buff *skb)
{
struct mISDN_sock *msk;
int err;
msk = container_of(ch, struct mISDN_sock, ch);
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s len %d %p\n", __func__, skb->len, skb);
if (msk->sk.sk_state == MISDN_CLOSED)
return -EUNATCH;
__net_timestamp(skb);
err = sock_queue_rcv_skb(&msk->sk, skb);
if (err)
printk(KERN_WARNING "%s: error %d\n", __func__, err);
return err;
}
static int
mISDN_ctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
{
struct mISDN_sock *msk;
msk = container_of(ch, struct mISDN_sock, ch);
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p, %x, %p)\n", __func__, ch, cmd, arg);
switch (cmd) {
case CLOSE_CHANNEL:
msk->sk.sk_state = MISDN_CLOSED;
break;
}
return 0;
}
static inline void
mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
{
struct timeval tv;
if (_pms(sk)->cmask & MISDN_TIME_STAMP) {
skb_get_timestamp(skb, &tv);
put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv);
}
}
static int
net: Remove iocb argument from sendmsg and recvmsg After TIPC doesn't depend on iocb argument in its internal implementations of sendmsg() and recvmsg() hooks defined in proto structure, no any user is using iocb argument in them at all now. Then we can drop the redundant iocb argument completely from kinds of implementations of both sendmsg() and recvmsg() in the entire networking stack. Cc: Christoph Hellwig <hch@lst.de> Suggested-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-02 15:37:48 +08:00
mISDN_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
int flags)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
struct sk_buff *skb;
struct sock *sk = sock->sk;
int copied, err;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s: len %d, flags %x ch.nr %d, proto %x\n",
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
__func__, (int)len, flags, _pms(sk)->ch.nr,
sk->sk_protocol);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (flags & (MSG_OOB))
return -EOPNOTSUPP;
if (sk->sk_state == MISDN_CLOSED)
return 0;
skb = skb_recv_datagram(sk, flags, flags & MSG_DONTWAIT, &err);
if (!skb)
return err;
net: rework recvmsg handler msg_name and msg_namelen logic This patch now always passes msg->msg_namelen as 0. recvmsg handlers must set msg_namelen to the proper size <= 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->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->msg_namelen == 0) msg->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 <davem@davemloft.net> Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-21 10:14:22 +08:00
if (msg->msg_name) {
net: add build-time checks for msg->msg_name size This is a follow-up patch to f3d3342602f8bc ("net: rework recvmsg handler msg_name and msg_namelen logic"). DECLARE_SOCKADDR validates that the structure we use for writing the name information to is not larger than the buffer which is reserved for msg->msg_name (which is 128 bytes). Also use DECLARE_SOCKADDR consistently in sendmsg code paths. Signed-off-by: Steffen Hurrle <steffen@hurrle.net> Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-18 05:53:15 +08:00
DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name);
net: rework recvmsg handler msg_name and msg_namelen logic This patch now always passes msg->msg_namelen as 0. recvmsg handlers must set msg_namelen to the proper size <= 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->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->msg_namelen == 0) msg->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 <davem@davemloft.net> Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-21 10:14:22 +08:00
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
maddr->family = AF_ISDN;
maddr->dev = _pms(sk)->dev->id;
if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
(sk->sk_protocol == ISDN_P_LAPD_NT)) {
maddr->channel = (mISDN_HEAD_ID(skb) >> 16) & 0xff;
maddr->tei = (mISDN_HEAD_ID(skb) >> 8) & 0xff;
maddr->sapi = mISDN_HEAD_ID(skb) & 0xff;
} else {
maddr->channel = _pms(sk)->ch.nr;
maddr->sapi = _pms(sk)->ch.addr & 0xFF;
maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xFF;
}
net: rework recvmsg handler msg_name and msg_namelen logic This patch now always passes msg->msg_namelen as 0. recvmsg handlers must set msg_namelen to the proper size <= 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->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->msg_namelen == 0) msg->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 <davem@davemloft.net> Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-11-21 10:14:22 +08:00
msg->msg_namelen = sizeof(*maddr);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
}
copied = skb->len + MISDN_HEADER_LEN;
if (len < copied) {
if (flags & MSG_PEEK)
net: convert sk_buff.users from atomic_t to refcount_t refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-30 18:07:58 +08:00
refcount_dec(&skb->users);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
else
skb_queue_head(&sk->sk_receive_queue, skb);
return -ENOSPC;
}
memcpy(skb_push(skb, MISDN_HEADER_LEN), mISDN_HEAD_P(skb),
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
MISDN_HEADER_LEN);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
net: Add and use skb_copy_datagram_msg() helper. This encapsulates all of the skb_copy_datagram_iovec() callers with call argument signature "skb, offset, msghdr->msg_iov, length". When we move to iov_iters in the networking, the iov_iter object will sit in the msghdr. Having a helper like this means there will be less places to touch during that transformation. Based upon descriptions and patch from Al Viro. Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06 05:46:40 +08:00
err = skb_copy_datagram_msg(skb, 0, msg, copied);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
mISDN_sock_cmsg(sk, msg, skb);
skb_free_datagram(sk, skb);
return err ? : copied;
}
static int
net: Remove iocb argument from sendmsg and recvmsg After TIPC doesn't depend on iocb argument in its internal implementations of sendmsg() and recvmsg() hooks defined in proto structure, no any user is using iocb argument in them at all now. Then we can drop the redundant iocb argument completely from kinds of implementations of both sendmsg() and recvmsg() in the entire networking stack. Cc: Christoph Hellwig <hch@lst.de> Suggested-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-02 15:37:48 +08:00
mISDN_sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
struct sock *sk = sock->sk;
struct sk_buff *skb;
int err = -ENOMEM;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s: len %d flags %x ch %d proto %x\n",
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
__func__, (int)len, msg->msg_flags, _pms(sk)->ch.nr,
sk->sk_protocol);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE))
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
return -EINVAL;
if (len < MISDN_HEADER_LEN)
return -EINVAL;
if (sk->sk_state != MISDN_BOUND)
return -EBADFD;
lock_sock(sk);
skb = _l2_alloc_skb(len, GFP_KERNEL);
if (!skb)
goto done;
new helper: memcpy_from_msg() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-04-07 09:25:44 +08:00
if (memcpy_from_msg(skb_put(skb, len), msg, len)) {
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
err = -EFAULT;
mISDN: Fix skb leak in error cases If the channel receive function returns an error the skb must be freed. Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:52 +08:00
goto done;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
}
memcpy(mISDN_HEAD_P(skb), skb->data, MISDN_HEADER_LEN);
skb_pull(skb, MISDN_HEADER_LEN);
if (msg->msg_namelen >= sizeof(struct sockaddr_mISDN)) {
/* if we have a address, we use it */
net: add build-time checks for msg->msg_name size This is a follow-up patch to f3d3342602f8bc ("net: rework recvmsg handler msg_name and msg_namelen logic"). DECLARE_SOCKADDR validates that the structure we use for writing the name information to is not larger than the buffer which is reserved for msg->msg_name (which is 128 bytes). Also use DECLARE_SOCKADDR consistently in sendmsg code paths. Signed-off-by: Steffen Hurrle <steffen@hurrle.net> Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-18 05:53:15 +08:00
DECLARE_SOCKADDR(struct sockaddr_mISDN *, maddr, msg->msg_name);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
mISDN_HEAD_ID(skb) = maddr->channel;
} else { /* use default for L2 messages */
if ((sk->sk_protocol == ISDN_P_LAPD_TE) ||
(sk->sk_protocol == ISDN_P_LAPD_NT))
mISDN: Cleanup debug messages This patch make debug printk's KERN_DEBUG and also fix some codestyle issues. Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:56 +08:00
mISDN_HEAD_ID(skb) = _pms(sk)->ch.nr;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
}
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s: ID:%x\n",
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
__func__, mISDN_HEAD_ID(skb));
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
err = -ENODEV;
mISDN: Fix skb leak in error cases If the channel receive function returns an error the skb must be freed. Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:52 +08:00
if (!_pms(sk)->ch.peer)
goto done;
err = _pms(sk)->ch.recv(_pms(sk)->ch.peer, skb);
if (err)
goto done;
else {
skb = NULL;
err = len;
}
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
done:
mISDN: Fix skb leak in error cases If the channel receive function returns an error the skb must be freed. Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:52 +08:00
if (skb)
kfree_skb(skb);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
release_sock(sk);
return err;
}
static int
data_sock_release(struct socket *sock)
{
struct sock *sk = sock->sk;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
if (!sk)
return 0;
switch (sk->sk_protocol) {
case ISDN_P_TE_S0:
case ISDN_P_NT_S0:
case ISDN_P_TE_E1:
case ISDN_P_NT_E1:
if (sk->sk_state == MISDN_BOUND)
delete_channel(&_pms(sk)->ch);
else
mISDN_sock_unlink(&data_sockets, sk);
break;
case ISDN_P_LAPD_TE:
case ISDN_P_LAPD_NT:
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
case ISDN_P_B_X75SLP:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSPHDLC:
delete_channel(&_pms(sk)->ch);
mISDN_sock_unlink(&data_sockets, sk);
break;
}
lock_sock(sk);
sock_orphan(sk);
skb_queue_purge(&sk->sk_receive_queue);
release_sock(sk);
sock_put(sk);
return 0;
}
static int
data_sock_ioctl_bound(struct sock *sk, unsigned int cmd, void __user *p)
{
struct mISDN_ctrl_req cq;
mISDN: Added layer-1-hold feature Add IMHOLD_L1 ioctl. The feature will be disabled on closing. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:48 +08:00
int err = -EINVAL, val[2];
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
struct mISDNchannel *bchan, *next;
lock_sock(sk);
if (!_pms(sk)->dev) {
err = -ENODEV;
goto done;
}
switch (cmd) {
case IMCTRLREQ:
if (copy_from_user(&cq, p, sizeof(cq))) {
err = -EFAULT;
break;
}
if ((sk->sk_protocol & ~ISDN_P_B_MASK) == ISDN_P_B_START) {
list_for_each_entry_safe(bchan, next,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
&_pms(sk)->dev->bchannels, list) {
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (bchan->nr == cq.channel) {
err = bchan->ctrl(bchan,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
CONTROL_CHANNEL, &cq);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
break;
}
}
} else
err = _pms(sk)->dev->D.ctrl(&_pms(sk)->dev->D,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
CONTROL_CHANNEL, &cq);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (err)
break;
if (copy_to_user(p, &cq, sizeof(cq)))
err = -EFAULT;
break;
case IMCLEAR_L2:
if (sk->sk_protocol != ISDN_P_LAPD_NT) {
err = -EINVAL;
break;
}
mISDN: Added layer-1-hold feature Add IMHOLD_L1 ioctl. The feature will be disabled on closing. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:48 +08:00
val[0] = cmd;
if (get_user(val[1], (int __user *)p)) {
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
err = -EFAULT;
break;
}
err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
CONTROL_CHANNEL, val);
mISDN: Added layer-1-hold feature Add IMHOLD_L1 ioctl. The feature will be disabled on closing. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:48 +08:00
break;
case IMHOLD_L1:
if (sk->sk_protocol != ISDN_P_LAPD_NT
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
&& sk->sk_protocol != ISDN_P_LAPD_TE) {
mISDN: Added layer-1-hold feature Add IMHOLD_L1 ioctl. The feature will be disabled on closing. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-22 19:04:48 +08:00
err = -EINVAL;
break;
}
val[0] = cmd;
if (get_user(val[1], (int __user *)p)) {
err = -EFAULT;
break;
}
err = _pms(sk)->dev->teimgr->ctrl(_pms(sk)->dev->teimgr,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
CONTROL_CHANNEL, val);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
break;
default:
err = -EINVAL;
break;
}
done:
release_sock(sk);
return err;
}
static int
data_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
int err = 0, id;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
struct sock *sk = sock->sk;
struct mISDNdevice *dev;
struct mISDNversion ver;
switch (cmd) {
case IMGETVERSION:
ver.major = MISDN_MAJOR_VERSION;
ver.minor = MISDN_MINOR_VERSION;
ver.release = MISDN_RELEASE;
if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
err = -EFAULT;
break;
case IMGETCOUNT:
id = get_mdevice_count();
if (put_user(id, (int __user *)arg))
err = -EFAULT;
break;
case IMGETDEVINFO:
if (get_user(id, (int __user *)arg)) {
err = -EFAULT;
break;
}
dev = get_mdevice(id);
if (dev) {
struct mISDN_devinfo di;
isdn: mISDN: socket: fix information leak to userland Structure mISDN_devinfo is copied to userland with the field "name" that has the last elements unitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-30 07:04:33 +08:00
memset(&di, 0, sizeof(di));
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
di.id = dev->id;
di.Dprotocols = dev->Dprotocols;
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
di.protocol = dev->D.protocol;
memcpy(di.channelmap, dev->channelmap,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
sizeof(di.channelmap));
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
di.nrbchan = dev->nrbchan;
mISDN: Use struct device name field struct device already has a 'name' member, use it. Signed-off-by: Matthias Urlichs <matthias@urlichs.de> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-16 06:04:33 +08:00
strcpy(di.name, dev_name(&dev->dev));
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (copy_to_user((void __user *)arg, &di, sizeof(di)))
err = -EFAULT;
} else
err = -ENODEV;
break;
default:
if (sk->sk_state == MISDN_BOUND)
err = data_sock_ioctl_bound(sk, cmd,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
(void __user *)arg);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
else
err = -ENOTCONN;
}
return err;
}
static int data_sock_setsockopt(struct socket *sock, int level, int optname,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
char __user *optval, unsigned int len)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
struct sock *sk = sock->sk;
int err = 0, opt = 0;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p, %d, %x, %p, %d)\n", __func__, sock,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
level, optname, optval, len);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
lock_sock(sk);
switch (optname) {
case MISDN_TIME_STAMP:
if (get_user(opt, (int __user *)optval)) {
err = -EFAULT;
break;
}
if (opt)
_pms(sk)->cmask |= MISDN_TIME_STAMP;
else
_pms(sk)->cmask &= ~MISDN_TIME_STAMP;
break;
default:
err = -ENOPROTOOPT;
break;
}
release_sock(sk);
return err;
}
static int data_sock_getsockopt(struct socket *sock, int level, int optname,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
char __user *optval, int __user *optlen)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
struct sock *sk = sock->sk;
int len, opt;
if (get_user(len, optlen))
return -EFAULT;
isdn: mISDN: socket: Fix set-but-unused variables. The variable 'len' is set but unused in data_sock_getsockopt(). The code should use 'len' to validate that the user's socket option is indeed the right size. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-04-18 07:48:53 +08:00
if (len != sizeof(char))
return -EINVAL;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
switch (optname) {
case MISDN_TIME_STAMP:
if (_pms(sk)->cmask & MISDN_TIME_STAMP)
opt = 1;
else
opt = 0;
if (put_user(opt, optval))
return -EFAULT;
break;
default:
return -ENOPROTOOPT;
}
return 0;
}
static int
data_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
mISDN: Fix deactivation, if peer IP is removed from l1oip instance. Added GETPEER operation. Socket now checks if device is already busy at a differen mode. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-09-14 18:30:18 +08:00
struct sock *csk;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
int err = 0;
if (*debug & DEBUG_SOCKET)
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
if (addr_len != sizeof(struct sockaddr_mISDN))
return -EINVAL;
if (!maddr || maddr->family != AF_ISDN)
return -EINVAL;
lock_sock(sk);
if (_pms(sk)->dev) {
err = -EALREADY;
goto done;
}
_pms(sk)->dev = get_mdevice(maddr->dev);
if (!_pms(sk)->dev) {
err = -ENODEV;
goto done;
}
mISDN: Fix deactivation, if peer IP is removed from l1oip instance. Added GETPEER operation. Socket now checks if device is already busy at a differen mode. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-09-14 18:30:18 +08:00
mISDN: Correct busy device detection Correct busy device detection. This fix belongs to last commit. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-09-14 20:42:18 +08:00
if (sk->sk_protocol < ISDN_P_B_START) {
read_lock_bh(&data_sockets.lock);
hlist: drop the node parameter from iterators I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c] [akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c] [akpm@linux-foundation.org: checkpatch fixes] [akpm@linux-foundation.org: fix warnings] [akpm@linux-foudnation.org: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin <peter.senna@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-28 09:06:00 +08:00
sk_for_each(csk, &data_sockets.head) {
mISDN: Correct busy device detection Correct busy device detection. This fix belongs to last commit. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-09-14 20:42:18 +08:00
if (sk == csk)
continue;
if (_pms(csk)->dev != _pms(sk)->dev)
continue;
if (csk->sk_protocol >= ISDN_P_B_START)
continue;
if (IS_ISDN_P_TE(csk->sk_protocol)
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
== IS_ISDN_P_TE(sk->sk_protocol))
mISDN: Correct busy device detection Correct busy device detection. This fix belongs to last commit. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-09-14 20:42:18 +08:00
continue;
read_unlock_bh(&data_sockets.lock);
err = -EBUSY;
goto done;
}
mISDN: Fix deactivation, if peer IP is removed from l1oip instance. Added GETPEER operation. Socket now checks if device is already busy at a differen mode. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-09-14 18:30:18 +08:00
read_unlock_bh(&data_sockets.lock);
}
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
_pms(sk)->ch.send = mISDN_send;
_pms(sk)->ch.ctrl = mISDN_ctrl;
switch (sk->sk_protocol) {
case ISDN_P_TE_S0:
case ISDN_P_NT_S0:
case ISDN_P_TE_E1:
case ISDN_P_NT_E1:
mISDN_sock_unlink(&data_sockets, sk);
err = connect_layer1(_pms(sk)->dev, &_pms(sk)->ch,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
sk->sk_protocol, maddr);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (err)
mISDN_sock_link(&data_sockets, sk);
break;
case ISDN_P_LAPD_TE:
case ISDN_P_LAPD_NT:
err = create_l2entity(_pms(sk)->dev, &_pms(sk)->ch,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
sk->sk_protocol, maddr);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
break;
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
case ISDN_P_B_X75SLP:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSPHDLC:
err = connect_Bstack(_pms(sk)->dev, &_pms(sk)->ch,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
sk->sk_protocol, maddr);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
break;
default:
err = -EPROTONOSUPPORT;
}
if (err)
goto done;
sk->sk_state = MISDN_BOUND;
_pms(sk)->ch.protocol = sk->sk_protocol;
done:
release_sock(sk);
return err;
}
static int
data_sock_getname(struct socket *sock, struct sockaddr *addr,
net: make getname() functions return length rather than use int* parameter Changes since v1: Added changes in these files: drivers/infiniband/hw/usnic/usnic_transport.c drivers/staging/lustre/lnet/lnet/lib-socket.c drivers/target/iscsi/iscsi_target_login.c drivers/vhost/net.c fs/dlm/lowcomms.c fs/ocfs2/cluster/tcp.c security/tomoyo/network.c Before: All these functions either return a negative error indicator, or store length of sockaddr into "int *socklen" parameter and return zero on success. "int *socklen" parameter is awkward. For example, if caller does not care, it still needs to provide on-stack storage for the value it does not need. None of the many FOO_getname() functions of various protocols ever used old value of *socklen. They always just overwrite it. This change drops this parameter, and makes all these functions, on success, return length of sockaddr. It's always >= 0 and can be differentiated from an error. Tests in callers are changed from "if (err)" to "if (err < 0)", where needed. rpc_sockname() lost "int buflen" parameter, since its only use was to be passed to kernel_getsockname() as &buflen and subsequently not used in any way. Userspace API is not changed. text data bss dec hex filename 30108430 2633624 873672 33615726 200ef6e vmlinux.before.o 30108109 2633612 873672 33615393 200ee21 vmlinux.o Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> CC: David S. Miller <davem@davemloft.net> CC: linux-kernel@vger.kernel.org CC: netdev@vger.kernel.org CC: linux-bluetooth@vger.kernel.org CC: linux-decnet-user@lists.sourceforge.net CC: linux-wireless@vger.kernel.org CC: linux-rdma@vger.kernel.org CC: linux-sctp@vger.kernel.org CC: linux-nfs@vger.kernel.org CC: linux-x25@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-13 03:00:20 +08:00
int peer)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
struct sock *sk = sock->sk;
if (!_pms(sk)->dev)
return -EBADFD;
lock_sock(sk);
isdn: mISDN: set ->family in ->getname() The "maddr->family" variable was not set but instead it leaked stack information to userspace. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-23 04:24:14 +08:00
maddr->family = AF_ISDN;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
maddr->dev = _pms(sk)->dev->id;
maddr->channel = _pms(sk)->ch.nr;
maddr->sapi = _pms(sk)->ch.addr & 0xff;
maddr->tei = (_pms(sk)->ch.addr >> 8) & 0xff;
release_sock(sk);
net: make getname() functions return length rather than use int* parameter Changes since v1: Added changes in these files: drivers/infiniband/hw/usnic/usnic_transport.c drivers/staging/lustre/lnet/lnet/lib-socket.c drivers/target/iscsi/iscsi_target_login.c drivers/vhost/net.c fs/dlm/lowcomms.c fs/ocfs2/cluster/tcp.c security/tomoyo/network.c Before: All these functions either return a negative error indicator, or store length of sockaddr into "int *socklen" parameter and return zero on success. "int *socklen" parameter is awkward. For example, if caller does not care, it still needs to provide on-stack storage for the value it does not need. None of the many FOO_getname() functions of various protocols ever used old value of *socklen. They always just overwrite it. This change drops this parameter, and makes all these functions, on success, return length of sockaddr. It's always >= 0 and can be differentiated from an error. Tests in callers are changed from "if (err)" to "if (err < 0)", where needed. rpc_sockname() lost "int buflen" parameter, since its only use was to be passed to kernel_getsockname() as &buflen and subsequently not used in any way. Userspace API is not changed. text data bss dec hex filename 30108430 2633624 873672 33615726 200ef6e vmlinux.before.o 30108109 2633612 873672 33615393 200ee21 vmlinux.o Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> CC: David S. Miller <davem@davemloft.net> CC: linux-kernel@vger.kernel.org CC: netdev@vger.kernel.org CC: linux-bluetooth@vger.kernel.org CC: linux-decnet-user@lists.sourceforge.net CC: linux-wireless@vger.kernel.org CC: linux-rdma@vger.kernel.org CC: linux-sctp@vger.kernel.org CC: linux-nfs@vger.kernel.org CC: linux-x25@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-13 03:00:20 +08:00
return sizeof(*maddr);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
}
static const struct proto_ops data_sock_ops = {
.family = PF_ISDN,
.owner = THIS_MODULE,
.release = data_sock_release,
.ioctl = data_sock_ioctl,
.bind = data_sock_bind,
.getname = data_sock_getname,
.sendmsg = mISDN_sock_sendmsg,
.recvmsg = mISDN_sock_recvmsg,
.poll = datagram_poll,
.listen = sock_no_listen,
.shutdown = sock_no_shutdown,
.setsockopt = data_sock_setsockopt,
.getsockopt = data_sock_getsockopt,
.connect = sock_no_connect,
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.mmap = sock_no_mmap
};
static int
net: Pass kern from net_proto_family.create to sk_alloc In preparation for changing how struct net is refcounted on kernel sockets pass the knowledge that we are creating a kernel socket from sock_create_kern through to sk_alloc. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-09 10:09:13 +08:00
data_sock_create(struct net *net, struct socket *sock, int protocol, int kern)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
struct sock *sk;
if (sock->type != SOCK_DGRAM)
return -ESOCKTNOSUPPORT;
net: Pass kern from net_proto_family.create to sk_alloc In preparation for changing how struct net is refcounted on kernel sockets pass the knowledge that we are creating a kernel socket from sock_create_kern through to sk_alloc. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-09 10:09:13 +08:00
sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (!sk)
return -ENOMEM;
sock_init_data(sock, sk);
sock->ops = &data_sock_ops;
sock->state = SS_UNCONNECTED;
sock_reset_flag(sk, SOCK_ZAPPED);
sk->sk_protocol = protocol;
sk->sk_state = MISDN_OPEN;
mISDN_sock_link(&data_sockets, sk);
return 0;
}
static int
base_sock_release(struct socket *sock)
{
struct sock *sk = sock->sk;
printk(KERN_DEBUG "%s(%p) sk=%p\n", __func__, sock, sk);
if (!sk)
return 0;
mISDN_sock_unlink(&base_sockets, sk);
sock_orphan(sk);
sock_put(sk);
return 0;
}
static int
base_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
int err = 0, id;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
struct mISDNdevice *dev;
struct mISDNversion ver;
switch (cmd) {
case IMGETVERSION:
ver.major = MISDN_MAJOR_VERSION;
ver.minor = MISDN_MINOR_VERSION;
ver.release = MISDN_RELEASE;
if (copy_to_user((void __user *)arg, &ver, sizeof(ver)))
err = -EFAULT;
break;
case IMGETCOUNT:
id = get_mdevice_count();
if (put_user(id, (int __user *)arg))
err = -EFAULT;
break;
case IMGETDEVINFO:
if (get_user(id, (int __user *)arg)) {
err = -EFAULT;
break;
}
dev = get_mdevice(id);
if (dev) {
struct mISDN_devinfo di;
isdn: mISDN: socket: fix information leak to userland Structure mISDN_devinfo is copied to userland with the field "name" that has the last elements unitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-30 07:04:33 +08:00
memset(&di, 0, sizeof(di));
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
di.id = dev->id;
di.Dprotocols = dev->Dprotocols;
di.Bprotocols = dev->Bprotocols | get_all_Bprotocols();
di.protocol = dev->D.protocol;
memcpy(di.channelmap, dev->channelmap,
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
sizeof(di.channelmap));
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
di.nrbchan = dev->nrbchan;
mISDN: Use struct device name field struct device already has a 'name' member, use it. Signed-off-by: Matthias Urlichs <matthias@urlichs.de> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-16 06:04:33 +08:00
strcpy(di.name, dev_name(&dev->dev));
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (copy_to_user((void __user *)arg, &di, sizeof(di)))
err = -EFAULT;
} else
err = -ENODEV;
break;
mISDN: Added an ioctl to change the device name To get persistent device names with hotplug we need to rename devices sometime. Signed-off-by: Matthias Urlichs <matthias@urlichs.de> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-12 16:12:09 +08:00
case IMSETDEVNAME:
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
{
struct mISDN_devrename dn;
if (copy_from_user(&dn, (void __user *)arg,
sizeof(dn))) {
err = -EFAULT;
break;
mISDN: Added an ioctl to change the device name To get persistent device names with hotplug we need to rename devices sometime. Signed-off-by: Matthias Urlichs <matthias@urlichs.de> Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-12 16:12:09 +08:00
}
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
dev = get_mdevice(dn.id);
if (dev)
err = device_rename(&dev->dev, dn.name);
else
err = -ENODEV;
}
break;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
default:
err = -EINVAL;
}
return err;
}
static int
base_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
{
struct sockaddr_mISDN *maddr = (struct sockaddr_mISDN *) addr;
struct sock *sk = sock->sk;
int err = 0;
if (!maddr || maddr->family != AF_ISDN)
return -EINVAL;
mISDN: Fixing missing validation in base_sock_bind() Add validation code into mISDN/socket.c Signed-off-by: Emrah Demir <ed@abdsec.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-09 03:16:11 +08:00
if (addr_len < sizeof(struct sockaddr_mISDN))
return -EINVAL;
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
lock_sock(sk);
if (_pms(sk)->dev) {
err = -EALREADY;
goto done;
}
_pms(sk)->dev = get_mdevice(maddr->dev);
if (!_pms(sk)->dev) {
err = -ENODEV;
goto done;
}
sk->sk_state = MISDN_BOUND;
done:
release_sock(sk);
return err;
}
static const struct proto_ops base_sock_ops = {
.family = PF_ISDN,
.owner = THIS_MODULE,
.release = base_sock_release,
.ioctl = base_sock_ioctl,
.bind = base_sock_bind,
.getname = sock_no_getname,
.sendmsg = sock_no_sendmsg,
.recvmsg = sock_no_recvmsg,
.poll = sock_no_poll,
.listen = sock_no_listen,
.shutdown = sock_no_shutdown,
.setsockopt = sock_no_setsockopt,
.getsockopt = sock_no_getsockopt,
.connect = sock_no_connect,
.socketpair = sock_no_socketpair,
.accept = sock_no_accept,
.mmap = sock_no_mmap
};
static int
net: Pass kern from net_proto_family.create to sk_alloc In preparation for changing how struct net is refcounted on kernel sockets pass the knowledge that we are creating a kernel socket from sock_create_kern through to sk_alloc. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-09 10:09:13 +08:00
base_sock_create(struct net *net, struct socket *sock, int protocol, int kern)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
struct sock *sk;
if (sock->type != SOCK_RAW)
return -ESOCKTNOSUPPORT;
net: Pass kern from net_proto_family.create to sk_alloc In preparation for changing how struct net is refcounted on kernel sockets pass the knowledge that we are creating a kernel socket from sock_create_kern through to sk_alloc. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-09 10:09:13 +08:00
sk = sk_alloc(net, PF_ISDN, GFP_KERNEL, &mISDN_proto, kern);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
if (!sk)
return -ENOMEM;
sock_init_data(sock, sk);
sock->ops = &base_sock_ops;
sock->state = SS_UNCONNECTED;
sock_reset_flag(sk, SOCK_ZAPPED);
sk->sk_protocol = protocol;
sk->sk_state = MISDN_OPEN;
mISDN_sock_link(&base_sockets, sk);
return 0;
}
static int
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>
2009-11-06 14:18:14 +08:00
mISDN_sock_create(struct net *net, struct socket *sock, int proto, int kern)
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
{
int err = -EPROTONOSUPPORT;
isdn: whitespace coding style cleanup isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2012-02-20 11:52:38 +08:00
switch (proto) {
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
case ISDN_P_BASE:
net: Pass kern from net_proto_family.create to sk_alloc In preparation for changing how struct net is refcounted on kernel sockets pass the knowledge that we are creating a kernel socket from sock_create_kern through to sk_alloc. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-09 10:09:13 +08:00
err = base_sock_create(net, sock, proto, kern);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
break;
case ISDN_P_TE_S0:
case ISDN_P_NT_S0:
case ISDN_P_TE_E1:
case ISDN_P_NT_E1:
case ISDN_P_LAPD_TE:
case ISDN_P_LAPD_NT:
case ISDN_P_B_RAW:
case ISDN_P_B_HDLC:
case ISDN_P_B_X75SLP:
case ISDN_P_B_L2DTMF:
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSPHDLC:
net: Pass kern from net_proto_family.create to sk_alloc In preparation for changing how struct net is refcounted on kernel sockets pass the knowledge that we are creating a kernel socket from sock_create_kern through to sk_alloc. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-09 10:09:13 +08:00
err = data_sock_create(net, sock, proto, kern);
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
break;
default:
return err;
}
return err;
}
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>
2009-10-05 13:58:39 +08:00
static const struct net_proto_family mISDN_sock_family_ops = {
Add mISDN core files Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27 07:54:58 +08:00
.owner = THIS_MODULE,
.family = PF_ISDN,
.create = mISDN_sock_create,
};
int
misdn_sock_init(u_int *deb)
{
int err;
debug = deb;
err = sock_register(&mISDN_sock_family_ops);
if (err)
printk(KERN_ERR "%s: error(%d)\n", __func__, err);
return err;
}
void
misdn_sock_cleanup(void)
{
sock_unregister(PF_ISDN);
}