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* Audit: collect sessionid in netlink messagesEric Paris2008-04-281-0/+1
| | | | | | | | | | Previously I added sessionid output to all audit messages where it was available but we still didn't know the sessionid of the sender of netlink messages. This patch adds that information to netlink messages so we can audit who sent netlink messages. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [NETLABEL]: Fix NULL deref in netlbl_unlabel_staticlist_gen() if ifindex not ↵Jesper Juhl2008-04-171-0/+4
| | | | | | | | | | | | | | | | | found dev_get_by_index() may return NULL if nothing is found. In net/netlabel/netlabel_unlabeled.c::netlbl_unlabel_staticlist_gen() the function is called, but the return value is never checked. If it returns NULL then we'll deref a NULL pointer on the very next line. I checked the callers, and I don't think this can actually happen today, but code changes over time and in the future it might happen and it does no harm to be defensive and check for the failure, so that if/when it happens we'll fail gracefully instead of crashing. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.YOSHIFUJI Hideaki2008-03-261-1/+1
| | | | | | | | Introduce per-net_device inlines: dev_net(), dev_net_set(). Without CONFIG_NET_NS, no namespace other than &init_net exists. Let's explicitly define them to help compiler optimizations. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
* [NETLABEL]: Move some initialization code into __init section.Pavel Emelyanov2008-02-171-3/+3
| | | | | | | | | Everything that is called from netlbl_init() can be marked with __init. This moves 620 bytes from .text section to .text.init one. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETLABEL]: Shrink the genl-ops registration code.Pavel Emelyanov2008-02-171-62/+24
| | | | | | | | | Turning them to array and registration in a loop saves 80 lines of code and ~300 bytes from text section. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETLABLE]: Hide netlbl_unlabel_audit_addr6 under ifdef CONFIG_IPV6.Pavel Emelyanov2008-02-121-0/+2
| | | | | | | | This one is called from under this config only, so move it in the same place. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETLABEL]: Don't produce unused variables when IPv6 is off.Pavel Emelyanov2008-02-121-10/+18
| | | | | | | | | | | | | Some code declares variables on the stack, but uses them under #ifdef CONFIG_IPV6, so thay become unused when ipv6 is off. Fortunately, they are used in a switch's case branches, so the fix is rather simple. Is it OK from coding style POV to add braces inside "cases", or should I better avoid such style and rework the patch? Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* NetLabel: Add auditing to the static labeling mechanismPaul Moore2008-01-301-14/+193
| | | | | | | This patch adds auditing support to the NetLabel static labeling mechanism. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* NetLabel: Introduce static network labels for unlabeled connectionsPaul Moore2008-01-301-7/+1368
| | | | | | | | | | | | | | | | | | Most trusted OSs, with the exception of Linux, have the ability to specify static security labels for unlabeled networks. This patch adds this ability to the NetLabel packet labeling framework. If the NetLabel subsystem is called to determine the security attributes of an incoming packet it first checks to see if any recognized NetLabel packet labeling protocols are in-use on the packet. If none can be found then the unlabled connection table is queried and based on the packets incoming interface and address it is matched with a security label as configured by the administrator using the netlabel_tools package. The matching security label is returned to the caller just as if the packet was explicitly labeled using a labeling protocol. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* NetLabel: Add secid token support to the NetLabel secattr structPaul Moore2008-01-301-0/+1
| | | | | | | | | | | This patch adds support to the NetLabel LSM secattr struct for a secid token and a type field, paving the way for full LSM/SELinux context support and "static" or "fallback" labels. In addition, this patch adds a fair amount of documentation to the core NetLabel structures used as part of the NetLabel kernel API. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* NetLabel: Remove unneeded RCU read locksPaul Moore2008-01-301-18/+4
| | | | | | | | | | This patch removes some unneeded RCU read locks as we can treat the reads as "safe" even without RCU. It also converts the NetLabel configuration refcount from a spinlock protected u32 into atomic_t to be more consistent with the rest of the kernel. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* [NetLabel]: correct usage of RCU lockingPaul Moore2007-10-261-3/+1
| | | | | | | | | | This fixes some awkward, and perhaps even problematic, RCU lock usage in the NetLabel code as well as some other related trivial cleanups found when looking through the RCU locking. Most of the changes involve removing the redundant RCU read locks wrapping spinlocks in the case of a RCU writer. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETLINK]: Mark netlink policies constPatrick McHardy2007-06-071-1/+1
| | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Fix kfree(skb)Patrick McHardy2007-02-281-1/+1
| | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* NetLabel: honor the audit_enabled flagPaul Moore2006-12-021-2/+6
| | | | | | | | | | | The audit_enabled flag is used to signal when syscall auditing is to be performed. While NetLabel uses a Netlink interface instead of syscalls, it is reasonable to consider the NetLabel Netlink interface as a form of syscall so pay attention to the audit_enabled flag when generating audit messages in NetLabel. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* NetLabel: convert the unlabeled accept flag to use RCUPaul Moore2006-12-021-7/+21
| | | | | | | | | | Currently the NetLabel unlabeled packet accept flag is an atomic type and it is checked for every non-NetLabel packet which comes into the system but rarely ever changed. This patch changes this flag to a normal integer and protects it with RCU locking. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* [GENL]: Add genlmsg_put_reply() to simplify building reply headersThomas Graf2006-12-021-6/+2
| | | | | | | | | | By modyfing genlmsg_put() to take a genl_family and by adding genlmsg_put_reply() the process of constructing the netlink and generic netlink headers is simplified. Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [GENL]: Add genlmsg_reply() to simply unicast replies to requestsThomas Graf2006-12-021-1/+1
| | | | | | | | | A generic netlink user has no interest in knowing how to address the source of the original request. Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NETLINK]: Do precise netlink message allocations where possibleThomas Graf2006-12-021-1/+1
| | | | | | | | | | | | | Account for the netlink message header size directly in nlmsg_new() instead of relying on the caller calculate it correctly. Replaces error handling of message construction functions when constructing notifications with bug traps since a failure implies a bug in calculating the size of the skb. Signed-off-by: Thomas Graf <tgraf@suug.ch> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NetLabel]: audit fixups due to delayed feedbackPaul Moore2006-09-291-11/+23
| | | | | | | | | | Fix some issues Steve Grubb had with the way NetLabel was using the audit subsystem. This should make NetLabel more consistent with other kernel generated audit messages specifying configuration changes. Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NetLabel]: add audit support for configuration changesPaul Moore2006-09-281-6/+30
| | | | | | | | | | | | | | | | This patch adds audit support to NetLabel, including six new audit message types shown below. #define AUDIT_MAC_UNLBL_ACCEPT 1406 #define AUDIT_MAC_UNLBL_DENY 1407 #define AUDIT_MAC_CIPSOV4_ADD 1408 #define AUDIT_MAC_CIPSOV4_DEL 1409 #define AUDIT_MAC_MAP_ADD 1410 #define AUDIT_MAC_MAP_DEL 1411 Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NetLabel]: rework the Netlink attribute handling (part 2)Paul Moore2006-09-251-44/+35
| | | | | | | | At the suggestion of Thomas Graf, rewrite NetLabel's use of Netlink attributes to better follow the common Netlink attribute usage. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NetLabel]: CIPSOv4 and Unlabeled packet integrationPaul Moore2006-09-221-0/+253
Add CIPSO/IPv4 and unlabeled packet management to the NetLabel subsystem. The CIPSO/IPv4 changes allow the configuration of CIPSO/IPv4 within the overall NetLabel framework. The unlabeled packet changes allows NetLabel to pass unlabeled packets without error. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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