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* Security: Make secctx_to_secid() take const secdataDavid Howells2008-04-291-2/+2
| | | | | | | Make secctx_to_secid() take constant secdata. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* xattr: add missing consts to function argumentsDavid Howells2008-04-291-2/+2
| | | | | | | | | Add missing consts to xattr function arguments. Signed-off-by: David Howells <dhowells@redhat.com> Cc: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SELinux: clean up printksEric Paris2008-04-211-32/+31
| | | | | | | | | | Make sure all printk start with KERN_* Make sure all printk end with \n Make sure all printk have the word 'selinux' in them Change "function name" to "%s", __func__ (found 2 wrong) Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: services.c whitespace, syntax, and static declaraction cleanupsEric Paris2008-04-211-60/+55
| | | | | | | | | | | | | | | | | | | | This patch changes services.c to fix whitespace and syntax issues. Things that are fixed may include (does not not have to include) whitespace at end of lines spaces followed by tabs spaces used instead of tabs spacing around parenthesis locateion of { around struct and else clauses location of * in pointer declarations removal of initialization of static data to keep it in the right section useless {} in if statemetns useless checking for NULL before kfree fixing of the indentation depth of switch statements and any number of other things I forgot to mention Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* Merge branch 'for-linus' of ↵Linus Torvalds2008-04-181-11/+34
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: security: fix up documentation for security_module_enable Security: Introduce security= boot parameter Audit: Final renamings and cleanup SELinux: use new audit hooks, remove redundant exports Audit: internally use the new LSM audit hooks LSM/Audit: Introduce generic Audit LSM hooks SELinux: remove redundant exports Netlink: Use generic LSM hook Audit: use new LSM hooks instead of SELinux exports SELinux: setup new inode/ipc getsecid hooks LSM: Introduce inode_getsecid and ipc_getsecid hooks
| * SELinux: use new audit hooks, remove redundant exportsAhmed S. Darwish2008-04-191-11/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | Setup the new Audit LSM hooks for SELinux. Remove the now redundant exported SELinux Audit interface. Audit: Export 'audit_krule' and 'audit_field' to the public since their internals are needed by the implementation of the new LSM hook 'audit_rule_known'. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Acked-by: James Morris <jmorris@namei.org>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.26Linus Torvalds2008-04-181-1/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.26: (1090 commits) [NET]: Fix and allocate less memory for ->priv'less netdevices [IPV6]: Fix dangling references on error in fib6_add(). [NETLABEL]: Fix NULL deref in netlbl_unlabel_staticlist_gen() if ifindex not found [PKT_SCHED]: Fix datalen check in tcf_simp_init(). [INET]: Uninline the __inet_inherit_port call. [INET]: Drop the inet_inherit_port() call. SCTP: Initialize partial_bytes_acked to 0, when all of the data is acked. [netdrvr] forcedeth: internal simplifications; changelog removal phylib: factor out get_phy_id from within get_phy_device PHY: add BCM5464 support to broadcom PHY driver cxgb3: Fix __must_check warning with dev_dbg. tc35815: Statistics cleanup natsemi: fix MMIO for PPC 44x platforms [TIPC]: Cleanup of TIPC reference table code [TIPC]: Optimized initialization of TIPC reference table [TIPC]: Remove inlining of reference table locking routines e1000: convert uint16_t style integers to u16 ixgb: convert uint16_t style integers to u16 sb1000.c: make const arrays static sb1000.c: stop inlining largish static functions ...
| * Merge branch 'master' of ↵David S. Miller2008-04-171-5/+7
| |\ | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * | NetLabel: Allow passing the LSM domain as a shared pointerPaul Moore2008-04-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Smack doesn't have the need to create a private copy of the LSM "domain" when setting NetLabel security attributes like SELinux, however, the current NetLabel code requires a private copy of the LSM "domain". This patches fixes that by letting the LSM determine how it wants to pass the domain value. * NETLBL_SECATTR_DOMAIN_CPY The current behavior, NetLabel assumes that the domain value is a copy and frees it when done * NETLBL_SECATTR_DOMAIN New, Smack-friendly behavior, NetLabel assumes that the domain value is a reference to a string managed by the LSM and does not free it when done 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>
* | | SELinux: Add network port SID cachePaul Moore2008-04-181-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Much like we added a network node cache, this patch adds a network port cache. The design is taken almost completely from the network node cache which in turn was taken from the network interface cache. The basic idea is to cache entries in a hash table based on protocol/port information. The hash function only takes the port number into account since the number of different protocols in use at any one time is expected to be relatively small. Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* | | selinux/ss/services.c should #include <linux/selinux.h>Adrian Bunk2008-04-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | Every file should include the headers containing the externs for its global code. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: James Morris <jmorris@namei.org>
* | | selinux: introduce permissive typesEric Paris2008-04-181-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce the concept of a permissive type. A new ebitmap is introduced to the policy database which indicates if a given type has the permissive bit set or not. This bit is tested for the scontext of any denial. The bit is meaningless on types which only appear as the target of a decision and never the source. A domain running with a permissive type will be allowed to perform any action similarly to when the system is globally set permissive. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* | | security: replace remaining __FUNCTION__ occurrencesHarvey Harrison2008-04-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: James Morris <jmorris@namei.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Morris <jmorris@namei.org>
* | | SELinux: create new open permissionEric Paris2008-04-181-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds a new open permission inside SELinux when 'opening' a file. The idea is that opening a file and reading/writing to that file are not the same thing. Its different if a program had its stdout redirected to /tmp/output than if the program tried to directly open /tmp/output. This should allow policy writers to more liberally give read/write permissions across the policy while still blocking many design and programing flaws SELinux is so good at catching today. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Reviewed-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* | | SELinux: unify printk messagesJames Morris2008-04-181-14/+14
| |/ |/| | | | | | | | | | | | | Replace "security:" prefixes in printk messages with "SELinux" to help users identify the source of the messages. Also fix a couple of minor formatting issues. Signed-off-by: James Morris <jmorris@namei.org>
* | SELinux: more GFP_NOFS fixups to prevent selinux from re-entering the fs codeStephen Smalley2008-04-081-5/+7
|/ | | | | | | | More cases where SELinux must not re-enter the fs code. Called from the d_instantiate security hook. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: Remove security_get_policycaps()Paul Moore2008-02-061-33/+0
| | | | | | | | | The security_get_policycaps() functions has a couple of bugs in it and it isn't currently used by any in-tree code, so get rid of it and all of it's bugginess. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@localhost.localdomain>
* [AUDIT] add session id to audit messagesEric Paris2008-02-011-2/+3
| | | | | | | | | In order to correlate audit records to an individual login add a session id. This is incremented every time a user logs in and is included in almost all messages which currently output the auid. The field is labeled ses= or oses= Signed-off-by: Eric Paris <eparis@redhat.com>
* [PATCH] switch audit_get_loginuid() to task_struct *Al Viro2008-02-011-1/+1
| | | | | | all callers pass something->audit_context Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [SELinux]: Fix double free in selinux_netlbl_sock_setsid()Paul Moore2008-01-311-1/+0
| | | | | | | | | | | | As pointed out by Adrian Bunk, commit 45c950e0f839fded922ebc0bfd59b1081cc71b70 ("fix memory leak in netlabel code") caused a double-free when security_netlbl_sid_to_secattr() fails. This patch fixes this by removing the netlbl_secattr_destroy() call from that function since we are already releasing the secattr memory in selinux_netlbl_sock_setsid(). Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* SELinux: Allow NetLabel to directly cache SIDsPaul Moore2008-01-301-104/+20
| | | | | | | | | | Now that the SELinux NetLabel "base SID" is always the netmsg initial SID we can do a big optimization - caching the SID and not just the MLS attributes. This not only saves a lot of per-packet memory allocations and copies but it has a nice side effect of removing a chunk of code. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: Better integration between peer labeling subsystemsPaul Moore2008-01-301-0/+85
| | | | | | | | | | | | | Rework the handling of network peer labels so that the different peer labeling subsystems work better together. This includes moving both subsystems to a single "peer" object class which involves not only changes to the permission checks but an improved method of consolidating multiple packet peer labels. As part of this work the inbound packet permission check code has been heavily modified to handle both the old and new behavior in as sane a fashion as possible. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: Add a capabilities bitmap to SELinux policy version 22Paul Moore2008-01-301-1/+66
| | | | | | | | | Add a new policy capabilities bitmap to SELinux policy version 22. This bitmap will enable the security server to query the policy to determine which features it supports. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: Convert the netif code to use ifindex valuesPaul Moore2008-01-301-8/+2
| | | | | | | | | | | | The current SELinux netif code requires the caller have a valid net_device struct pointer to lookup network interface information. However, we don't always have a valid net_device pointer so convert the netif code to use the ifindex values we always have as part of the sk_buff. This patch also removes the default message SID from the network interface record, it is not being used and therefore is "dead code". 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 Moore2008-01-301-1/+4
| | | | | | | | | | | 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>
* selinux: fix labeling of /proc/net inodesStephen Smalley2008-01-261-0/+3
| | | | | | | | | | The proc net rewrite had a side effect on selinux, leading it to mislabel the /proc/net inodes, thereby leading to incorrect denials. Fix security_genfs_sid to ignore extra leading / characters in the path supplied by selinux_proc_get_sid since we now get "//net/..." rather than "/net/...". Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* selinux: fix memory leak in netlabel codePaul Moore2008-01-221-2/+0
| | | | | | | | Fix a memory leak in security_netlbl_sid_to_secattr() as reported here: * https://bugzilla.redhat.com/show_bug.cgi?id=352281 Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: improve performance when AVC misses.KaiGai Kohei2007-10-171-12/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * We add ebitmap_for_each_positive_bit() which enables to walk on any positive bit on the given ebitmap, to improve its performance using common bit-operations defined in linux/bitops.h. In the previous version, this logic was implemented using a combination of ebitmap_for_each_bit() and ebitmap_node_get_bit(), but is was worse in performance aspect. This logic is most frequestly used to compute a new AVC entry, so this patch can improve SELinux performance when AVC misses are happen. * struct ebitmap_node is redefined as an array of "unsigned long", to get suitable for using find_next_bit() which is fasted than iteration of shift and logical operation, and to maximize memory usage allocated from general purpose slab. * Any ebitmap_for_each_bit() are repleced by the new implementation in ss/service.c and ss/mls.c. Some of related implementation are changed, however, there is no incompatibility with the previous version. * The width of any new line are less or equal than 80-chars. The following benchmark shows the effect of this patch, when we access many files which have different security context one after another. The number is more than /selinux/avc/cache_threshold, so any access always causes AVC misses. selinux-2.6 selinux-2.6-ebitmap AVG: 22.763 [s] 8.750 [s] STD: 0.265 0.019 ------------------------------------------ 1st: 22.558 [s] 8.786 [s] 2nd: 22.458 [s] 8.750 [s] 3rd: 22.478 [s] 8.754 [s] 4th: 22.724 [s] 8.745 [s] 5th: 22.918 [s] 8.748 [s] 6th: 22.905 [s] 8.764 [s] 7th: 23.238 [s] 8.726 [s] 8th: 22.822 [s] 8.729 [s] Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: policy selectable handling of unknown classes and permsEric Paris2007-10-171-9/+66
| | | | | | | | | | | | | | | | | | Allow policy to select, in much the same way as it selects MLS support, how the kernel should handle access decisions which contain either unknown classes or unknown permissions in known classes. The three choices for the policy flags are 0 - Deny unknown security access. (default) 2 - reject loading policy if it does not contain all definitions 4 - allow unknown security access The policy's choice is exported through 2 booleans in selinuxfs. /selinux/deny_unknown and /selinux/reject_unknown. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: correct error code in selinux_audit_rule_initSteve G2007-08-161-1/+1
| | | | | | | Corrects an error code so that it is valid to pass to userspace. Signed-off-by: Steve Grubb <linux_4ever@yahoo.com> Signed-off-by: James Morris <jmorris@halo.namei>
* Typo fixes errror -> errorGabriel Craciunescu2007-07-311-1/+1
| | | | | | | | | | | Typo fixes errror -> error Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SELinux: fix memory leak in security_netlbl_cache_add()Jesper Juhl2007-07-231-1/+3
| | | | | | | | | Fix memory leak in security_netlbl_cache_add() Note: The Coverity checker gets credit for spotting this one. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
* SELinux: allow preemption between transition permission checksStephen Smalley2007-07-111-19/+30
| | | | | | | | | | | | | | | | | | In security_get_user_sids, move the transition permission checks outside of the section holding the policy rdlock, and use the AVC to perform the checks, calling cond_resched after each one. These changes should allow preemption between the individual checks and enable caching of the results. It may however increase the overall time spent in the function in some cases, particularly in the cache miss case. The long term fix will be to take much of this logic to userspace by exporting additional state via selinuxfs, and ultimately deprecating and eliminating this interface from the kernel. Tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* selinux: add support for querying object classes and permissions from the ↵Christopher J. PeBenito2007-07-111-0/+95
| | | | | | | | | | running policy Add support to the SELinux security server for obtaining a list of classes, and for obtaining a list of permissions for a specified class. Signed-off-by: Christopher J. PeBenito <cpebenito@tresys.com> Signed-off-by: James Morris <jmorris@namei.org>
* selinux: preserve boolean values across policy reloadsStephen Smalley2007-04-261-0/+38
| | | | | | | | | | At present, the userland policy loading code has to go through contortions to preserve boolean values across policy reloads, and cannot do so atomically. As this is what we always want to do for reloads, let the kernel preserve them instead. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Karl MacMillan <kmacmillan@mentalrootkit.com> Signed-off-by: James Morris <jmorris@namei.org>
* selinux: export initial SID contexts via selinuxfsJames Carter2007-04-261-0/+7
| | | | | | | | | | Make the initial SID contexts accessible to userspace via selinuxfs. An initial use of this support will be to make the unlabeled context available to libselinux for use for invalidated userspace SIDs. Signed-off-by: James Carter <jwcart2@tycho.nsa.gov> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* selinux: remove userland security class and permission definitionsStephen Smalley2007-04-261-0/+2
| | | | | | | | | Remove userland security class and permission definitions from the kernel as the kernel only needs to use and validate its own class and permission definitions and userland definitions may change. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: move security_skb_extlbl_sid() out of the security serverPaul Moore2007-04-261-27/+0
| | | | | | | | | As suggested, move the security_skb_extlbl_sid() function out of the security server and into the SELinux hooks file. Signed-off-by: Paul Moore <paul.moore@hp.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: rename selinux_netlabel.h to netlabel.hPaul Moore2007-04-261-1/+1
| | | | | | | | | | In the beginning I named the file selinux_netlabel.h to avoid potential namespace colisions. However, over time I have realized that there are several other similar cases of multiple header files with the same name so I'm changing the name to something which better fits with existing naming conventions. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: extract the NetLabel SELinux support from the security serverPaul Moore2007-04-261-365/+58
| | | | | | | | | | | Up until this patch the functions which have provided NetLabel support to SELinux have been integrated into the SELinux security server, which for various reasons is not really ideal. This patch makes an effort to extract as much of the NetLabel support from the security server as possibile and move it into it's own file within the SELinux directory structure. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* Always initialize scontext and scontext_lenStephen Smalley2007-02-261-0/+3
| | | | | | | | | Always initialize *scontext and *scontext_len in security_sid_to_context. (via http://lkml.org/lkml/2007/2/23/135) Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* [SELINUX]: Fix 2.6.20-rc6 build when no xfrmVenkat Yekkirala2007-01-261-3/+3
| | | | | | | | | This patch is an incremental fix to the flow_cache_genid patch for selinux that breaks the build of 2.6.20-rc6 when xfrm is not configured. Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SELINUX]: increment flow cache genidVenkat Yekkirala2007-01-231-0/+3
| | | | | | | | | | | | | | | | | | | | | | Currently, old flow cache entries remain valid even after a reload of SELinux policy. This patch increments the flow cache generation id on policy (re)loads so that flow cache entries are revalidated as needed. Thanks to Herbet Xu for pointing this out. See: http://marc.theaimsgroup.com/?l=linux-netdev&m=116841378704536&w=2 There's also a general issue as well as a solution proposed by David Miller for when flow_cache_genid wraps. I might be submitting a separate patch for that later. I request that this be applied to 2.6.20 since it's a security relevant fix. Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* NetLabel: correct locking in selinux_netlbl_socket_setsid()Paul Moore2007-01-091-2/+2
| | | | | | | | | The spinlock protecting the update of the "sksec->nlbl_state" variable is not currently softirq safe which can lead to problems. This patch fixes this by changing the spin_{un}lock() functions into spin_{un}lock_bh() functions. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* selinux: Delete mls_copy_contextVenkat Yekkirala2007-01-081-2/+1
| | | | | | | | | This deletes mls_copy_context() in favor of mls_context_cpy() and replaces mls_scopy_context() with mls_context_cpy_low(). Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
* [PATCH] selinux: fix selinux_netlbl_inode_permission() lockingParag Warudkar2007-01-021-2/+4
| | | | | | | | | | | | | | | | | | | | do not call a sleeping lock API in an RCU read section. lock_sock_nested can sleep, its BH counterpart doesn't. selinux_netlbl_inode_permission() needs to use the BH counterpart unconditionally. Compile tested. From: Ingo Molnar <mingo@elte.hu> added BH disabling, because this function can be called from non-atomic contexts too, so a naked bh_lock_sock() would be deadlock-prone. Boot-tested the resulting kernel. Signed-off-by: Parag Warudkar <paragw@paragw.zapto.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* NetLabel: convert to an extensibile/sparse category bitmapPaul Moore2006-12-021-16/+7
| | | | | | | | | | | | | | | | The original NetLabel category bitmap was a straight char bitmap which worked fine for the initial release as it only supported 240 bits due to limitations in the CIPSO restricted bitmap tag (tag type 0x01). This patch converts that straight char bitmap into an extensibile/sparse bitmap in order to lay the foundation for other CIPSO tag types and protocols. This patch also has a nice side effect in that all of the security attributes passed by NetLabel into the LSM are now in a format which is in the host's native byte/bit ordering which makes the LSM specific code much simpler; look at the changes in security/selinux/ss/ebitmap.c as an example. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: peer secid consolidation for external network labelingPaul Moore2006-12-021-62/+28
| | | | | | | | | | | | Now that labeled IPsec makes use of the peer_sid field in the sk_security_struct we can remove a lot of the special cases between labeled IPsec and NetLabel. In addition, create a new function, security_skb_extlbl_sid(), which we can use in several places to get the security context of the packet's external label which allows us to further simplify the code in a few places. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* NetLabel: SELinux cleanupsPaul Moore2006-12-021-41/+66
| | | | | | | | | | | | | | | | | This patch does a lot of cleanup in the SELinux NetLabel support code. A summary of the changes include: * Use RCU locking for the NetLabel state variable in the skk_security_struct instead of using the inode_security_struct mutex. * Remove unnecessary parameters in selinux_netlbl_socket_post_create(). * Rename selinux_netlbl_sk_clone_security() to selinux_netlbl_sk_security_clone() to better fit the other NetLabel sk_security functions. * Improvements to selinux_netlbl_inode_permission() to help reduce the cost of the common case. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
* NetLabel: make netlbl_lsm_secattr struct easier/quicker to understandPaul Moore2006-12-021-8/+16
| | | | | | | | | | | | | | | | | | | The existing netlbl_lsm_secattr struct required the LSM to check all of the fields to determine if any security attributes were present resulting in a lot of work in the common case of no attributes. This patch adds a 'flags' field which is used to indicate which attributes are present in the structure; this should allow the LSM to do a quick comparison to determine if the structure holds any security attributes. Example: if (netlbl_lsm_secattr->flags) /* security attributes present */ else /* NO security attributes present */ Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
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