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* [NET]: Fix module reference counts for loadable protocol modulesFrank Filz2005-09-271-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I have been experimenting with loadable protocol modules, and ran into several issues with module reference counting. The first issue was that __module_get failed at the BUG_ON check at the top of the routine (checking that my module reference count was not zero) when I created the first socket. When sk_alloc() is called, my module reference count was still 0. When I looked at why sctp didn't have this problem, I discovered that sctp creates a control socket during module init (when the module ref count is not 0), which keeps the reference count non-zero. This section has been updated to address the point Stephen raised about checking the return value of try_module_get(). The next problem arose when my socket init routine returned an error. This resulted in my module reference count being decremented below 0. My socket ops->release routine was also being called. The issue here is that sock_release() calls the ops->release routine and decrements the ref count if sock->ops is not NULL. Since the socket probably didn't get correctly initialized, this should not be done, so we will set sock->ops to NULL because we will not call try_module_get(). While searching for another bug, I also noticed that sys_accept() has a possibility of doing a module_put() when it did not do an __module_get so I re-ordered the call to security_socket_accept(). Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make sure ctl buffer is aligned properly in sys_sendmsg().Alex Williamson2005-09-261-1/+3
| | | | | | | | | | It's on the stack and declared as "unsigned char[]", but pointers and similar can be in here thus we need to give it an explicit alignment attribute. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Do not leak MSG_CMSG_COMPAT into userspace.David S. Miller2005-09-161-1/+2
| | | | | | Noticed by Sridhar Samudrala. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Fix 32bit sendmsg() flawAl Viro2005-09-081-1/+2
| | | | | | | | | | | | | | | | | When we copy 32bit ->msg_control contents to kernel, we walk the same userland data twice without sanity checks on the second pass. Second version of this patch: the original broke with 64-bit arches running 32-bit-compat-mode executables doing sendmsg() syscalls with unaligned CMSG data areas Another thing is that we use kmalloc() to allocate and sock_kfree_s() to free afterwards; less serious, but also needs fixing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [NET]: Use file->private_data to get socket pointer.Eric Dumazet2005-09-061-11/+11
| | | | | | | | Avoid touching file->f_dentry on sockets, since file->private_data directly gives us the socket pointer. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: use __read_mostly on kmem_cache_t , DEFINE_SNMP_STAT pointersEric Dumazet2005-08-291-2/+2
| | | | | | | | | | | | | This patch puts mostly read only data in the right section (read_mostly), to help sharing of these data between CPUS without memory ping pongs. On one of my production machine, tcp_statistics was sitting in a heavily modified cache line, so *every* SNMP update had to force a reload. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Fix sparse warningsArnaldo Carvalho de Melo2005-08-291-6/+5
| | | | | | | | | | | Of this type, mostly: CHECK net/ipv6/netfilter.c net/ipv6/netfilter.c:96:12: warning: symbol 'ipv6_netfilter_init' was not declared. Should it be static? net/ipv6/netfilter.c:101:6: warning: symbol 'ipv6_netfilter_fini' was not declared. Should it be static? Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Make use of ->private_data in sockfd_lookupBenjamin LaHaise2005-08-291-0/+4
| | | | | | | | | Please consider the patch below which makes use of file->private_data to store the pointer to the socket, which avoids touching several unused cachelines in the dentry and inode in sockfd_lookup. Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: dont use strlen() but the result from a prior sprintf()Eric Dumazet2005-06-221-2/+1
| | | | | | | | Small patch to save an unecessary call to strlen() : sprintf() gave us the length, just trust it. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* AUDIT: Fix user pointer deref thinko in sys_socketcall().David Woodhouse2005-06-021-1/+1
| | | | | | | | I cunningly put the audit call immediately after the copy_from_user().... but used the _userspace_ copy of the args still. Let's not do that. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Capture sys_socketcall arguments and sockaddrs David Woodhouse2005-05-171-2/+7
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [PATCH] update Ross Biro bouncing email addressJesper Juhl2005-05-051-1/+1
| | | | | | | | | Ross moved. Remove the bad email address so people will find the correct one in ./CREDITS. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+2088
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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