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* Audit: add support to match lsm labels on user audit messagesMiloslav Trmac2010-10-301-0/+12
| | | | | | | | | | | | | | | | | Add support for matching by security label (e.g. SELinux context) of the sender of an user-space audit record. The audit filter code already allows user space to configure such filters, but they were ignored during evaluation. This patch implements evaluation of these filters. For example, after application of this patch, PAM authentication logs caused by cron can be disabled using auditctl -a user,never -F subj_type=crond_t Signed-off-by: Miloslav Trmac <mitr@redhat.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* audit: do not get and put just to free a watchEric Paris2010-07-281-5/+1
| | | | | | | | | | deleting audit watch rules is not currently done under audit_filter_mutex. It was done this way because we could not hold the mutex during inotify manipulation. Since we are using fsnotify we don't need to do the extra get/put pair nor do we need the private list on which to store the parents while they are about to be freed. Signed-off-by: Eric Paris <eparis@redhat.com>
* Audit: clean up the audit_watch splitEric Paris2010-07-281-26/+15
| | | | | | | | No real changes, just cleanup to the audit_watch split patch which we done with minimal code changes for easy review. Now fix interfaces to make things work better. Signed-off-by: Eric Paris <eparis@redhat.com>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Audit: clean up all op= output to include string quotingEric Paris2009-06-241-7/+5
| | | | | | | | | | | | | | | | | | A number of places in the audit system we send an op= followed by a string that includes spaces. Somehow this works but it's just wrong. This patch moves all of those that I could find to be quoted. Example: Change From: type=CONFIG_CHANGE msg=audit(1244666690.117:31): auid=0 ses=1 subj=unconfined_u:unconfined_r:auditctl_t:s0-s0:c0.c1023 op=remove rule key="number2" list=4 res=0 Change To: type=CONFIG_CHANGE msg=audit(1244666690.117:31): auid=0 ses=1 subj=unconfined_u:unconfined_r:auditctl_t:s0-s0:c0.c1023 op="remove rule" key="number2" list=4 res=0 Signed-off-by: Eric Paris <eparis@redhat.com>
* Audit: move audit_get_nd completely into audit_watchEric Paris2009-06-231-13/+2
| | | | | | | | audit_get_nd() is only used by audit_watch and could be more cleanly implemented by having the audit watch functions call it when needed rather than making the generic audit rule parsing code deal with those objects. Signed-off-by: Eric Paris <eparis@redhat.com>
* audit: seperate audit inode watches into a subfileEric Paris2009-06-231-467/+14
| | | | | | | | In preparation for converting audit to use fsnotify instead of inotify we seperate the inode watching code into it's own file. This is similar to how the audit tree watching code is already seperated into audit_tree.c Signed-off-by: Eric Paris <eparis@redhat.com>
* Audit: dereferencing krule as if it were an audit_watchEric Paris2009-06-231-34/+24
| | | | | | | | | | | | | | | | audit_update_watch() runs all of the rules for a given watch and duplicates them, attaches a new watch to them, and then when it finishes that process and has called free on all of the old rules (ok maybe still inside the rcu grace period) it proceeds to use the last element from list_for_each_entry_safe() as if it were a krule rather than being the audit_watch which was anchoring the list to output a message about audit rules changing. This patch unfies the audit message from two different places into a helper function and calls it from the correct location in audit_update_rules(). We will now get an audit message about the config changing for each rule (with each rules filterkey) rather than the previous garbage. Signed-off-by: Eric Paris <eparis@redhat.com>
* Audit: fix audit watch use after freeEric Paris2009-06-231-0/+2
| | | | | | | | When an audit watch is added to a parent the temporary watch inside the original krule from userspace is freed. Yet the original watch is used after the real watch was created in audit_add_rules() Signed-off-by: Eric Paris <eparis@redhat.com>
* inotify: use GFP_NOFS in kernel_event() to work around a lockdep false-positiveWu Fengguang2009-05-061-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is what we believe to be a false positive reported by lockdep. inotify_inode_queue_event() => take inotify_mutex => kernel_event() => kmalloc() => SLOB => alloc_pages_node() => page reclaim => slab reclaim => dcache reclaim => inotify_inode_is_dead => take inotify_mutex => deadlock The plan is to fix this via lockdep annotation, but that is proving to be quite involved. The patch flips the allocation over to GFP_NFS to shut the warning up, for the 2.6.30 release. Hopefully we will fix this for real in 2.6.31. I'll queue a patch in -mm to switch it back to GFP_KERNEL so we don't forget. ================================= [ INFO: inconsistent lock state ] 2.6.30-rc2-next-20090417 #203 --------------------------------- inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage. kswapd0/380 [HC0[0]:SC0[0]:HE1:SE1] takes: (&inode->inotify_mutex){+.+.?.}, at: [<ffffffff8112f1b5>] inotify_inode_is_dead+0x35/0xb0 {RECLAIM_FS-ON-W} state was registered at: [<ffffffff81079188>] mark_held_locks+0x68/0x90 [<ffffffff810792a5>] lockdep_trace_alloc+0xf5/0x100 [<ffffffff810f5261>] __kmalloc_node+0x31/0x1e0 [<ffffffff81130652>] kernel_event+0xe2/0x190 [<ffffffff81130826>] inotify_dev_queue_event+0x126/0x230 [<ffffffff8112f096>] inotify_inode_queue_event+0xc6/0x110 [<ffffffff8110444d>] vfs_create+0xcd/0x140 [<ffffffff8110825d>] do_filp_open+0x88d/0xa20 [<ffffffff810f6b68>] do_sys_open+0x98/0x140 [<ffffffff810f6c50>] sys_open+0x20/0x30 [<ffffffff8100c272>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff irq event stamp: 690455 hardirqs last enabled at (690455): [<ffffffff81564fe4>] _spin_unlock_irqrestore+0x44/0x80 hardirqs last disabled at (690454): [<ffffffff81565372>] _spin_lock_irqsave+0x32/0xa0 softirqs last enabled at (690178): [<ffffffff81052282>] __do_softirq+0x202/0x220 softirqs last disabled at (690157): [<ffffffff8100d50c>] call_softirq+0x1c/0x50 other info that might help us debug this: 2 locks held by kswapd0/380: #0: (shrinker_rwsem){++++..}, at: [<ffffffff810d0bd7>] shrink_slab+0x37/0x180 #1: (&type->s_umount_key#17){++++..}, at: [<ffffffff8110cfbf>] shrink_dcache_memory+0x11f/0x1e0 stack backtrace: Pid: 380, comm: kswapd0 Not tainted 2.6.30-rc2-next-20090417 #203 Call Trace: [<ffffffff810789ef>] print_usage_bug+0x19f/0x200 [<ffffffff81018bff>] ? save_stack_trace+0x2f/0x50 [<ffffffff81078f0b>] mark_lock+0x4bb/0x6d0 [<ffffffff810799e0>] ? check_usage_forwards+0x0/0xc0 [<ffffffff8107b142>] __lock_acquire+0xc62/0x1ae0 [<ffffffff810f478c>] ? slob_free+0x10c/0x370 [<ffffffff8107c0a1>] lock_acquire+0xe1/0x120 [<ffffffff8112f1b5>] ? inotify_inode_is_dead+0x35/0xb0 [<ffffffff81562d43>] mutex_lock_nested+0x63/0x420 [<ffffffff8112f1b5>] ? inotify_inode_is_dead+0x35/0xb0 [<ffffffff8112f1b5>] ? inotify_inode_is_dead+0x35/0xb0 [<ffffffff81012fe9>] ? sched_clock+0x9/0x10 [<ffffffff81077165>] ? lock_release_holdtime+0x35/0x1c0 [<ffffffff8112f1b5>] inotify_inode_is_dead+0x35/0xb0 [<ffffffff8110c9dc>] dentry_iput+0xbc/0xe0 [<ffffffff8110cb23>] d_kill+0x33/0x60 [<ffffffff8110ce23>] __shrink_dcache_sb+0x2d3/0x350 [<ffffffff8110cffa>] shrink_dcache_memory+0x15a/0x1e0 [<ffffffff810d0cc5>] shrink_slab+0x125/0x180 [<ffffffff810d1540>] kswapd+0x560/0x7a0 [<ffffffff810ce160>] ? isolate_pages_global+0x0/0x2c0 [<ffffffff81065a30>] ? autoremove_wake_function+0x0/0x40 [<ffffffff8107953d>] ? trace_hardirqs_on+0xd/0x10 [<ffffffff810d0fe0>] ? kswapd+0x0/0x7a0 [<ffffffff8106555b>] kthread+0x5b/0xa0 [<ffffffff8100d40a>] child_rip+0xa/0x20 [<ffffffff8100cdd0>] ? restore_args+0x0/0x30 [<ffffffff81065500>] ? kthread+0x0/0xa0 [<ffffffff8100d400>] ? child_rip+0x0/0x20 [eparis@redhat.com: fix audit too] Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Matt Mackall <mpm@selenic.com> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Eric Paris <eparis@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* make the e->rule.xxx shorter in kernel auditfilter.cZhenwen Xu2009-04-051-8/+8
| | | | | | | | | | | | | | | | | make the e->rule.xxx shorter in kernel/auditfilter.c -- --------------------------------- Zhenwen Xu - Open and Free Home Page: http://zhwen.org My Studio: http://dim4.cn >From 99692dc640b278f1cb1a15646ce42f22e89c0f77 Mon Sep 17 00:00:00 2001 From: Zhenwen Xu <Helight.Xu@gmail.com> Date: Thu, 12 Mar 2009 22:04:59 +0800 Subject: [PATCH] make the e->rule.xxx shorter in kernel/auditfilter.c Signed-off-by: Zhenwen Xu <Helight.Xu@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* audit: validate comparison operations, store them in sane formAl Viro2009-01-041-67/+65
| | | | | | | | | | | Don't store the field->op in the messy (and very inconvenient for e.g. audit_comparator()) form; translate to dense set of values and do full validation of userland-submitted value while we are at it. ->audit_init_rule() and ->audit_match_rule() get new values now; in-tree instances updated. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* clean up audit_rule_{add,del} a bitAl Viro2009-01-041-25/+17
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* audit rules ordering, part 2Al Viro2009-01-041-56/+39
| | | | | | | | Fix the actual rule listing; add per-type lists _not_ used for matching, with all exit,... sitting on one such list. Simplifies "do something for all rules" logics, while we are at it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* fixing audit rule ordering mess, part 1Al Viro2009-01-041-3/+14
| | | | | | | | | | | | Problem: ordering between the rules on exit chain is currently lost; all watch and inode rules are listed after everything else _and_ exit,never on one kind doesn't stop exit,always on another from being matched. Solution: assign priorities to rules, keep track of the current highest-priority matching rule and its result (always/never). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* audit_update_lsm_rules() misses the audit_inode_hash[] onesAl Viro2009-01-041-30/+47
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Fix inotify watch removal/umount racesAl Viro2008-11-151-5/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Inotify watch removals suck violently. To kick the watch out we need (in this order) inode->inotify_mutex and ih->mutex. That's fine if we have a hold on inode; however, for all other cases we need to make damn sure we don't race with umount. We can *NOT* just grab a reference to a watch - inotify_unmount_inodes() will happily sail past it and we'll end with reference to inode potentially outliving its superblock. Ideally we just want to grab an active reference to superblock if we can; that will make sure we won't go into inotify_umount_inodes() until we are done. Cleanup is just deactivate_super(). However, that leaves a messy case - what if we *are* racing with umount() and active references to superblock can't be acquired anymore? We can bump ->s_count, grab ->s_umount, which will almost certainly wait until the superblock is shut down and the watch in question is pining for fjords. That's fine, but there is a problem - we might have hit the window between ->s_active getting to 0 / ->s_count - below S_BIAS (i.e. the moment when superblock is past the point of no return and is heading for shutdown) and the moment when deactivate_super() acquires ->s_umount. We could just do drop_super() yield() and retry, but that's rather antisocial and this stuff is luser-triggerable. OTOH, having grabbed ->s_umount and having found that we'd got there first (i.e. that ->s_root is non-NULL) we know that we won't race with inotify_umount_inodes(). So we could grab a reference to watch and do the rest as above, just with drop_super() instead of deactivate_super(), right? Wrong. We had to drop ih->mutex before we could grab ->s_umount. So the watch could've been gone already. That still can be dealt with - we need to save watch->wd, do idr_find() and compare its result with our pointer. If they match, we either have the damn thing still alive or we'd lost not one but two races at once, the watch had been killed and a new one got created with the same ->wd at the same address. That couldn't have happened in inotify_destroy(), but inotify_rm_wd() could run into that. Still, "new one got created" is not a problem - we have every right to kill it or leave it alone, whatever's more convenient. So we can use idr_find(...) == watch && watch->inode->i_sb == sb as "grab it and kill it" check. If it's been our original watch, we are fine, if it's a newcomer - nevermind, just pretend that we'd won the race and kill the fscker anyway; we are safe since we know that its superblock won't be going away. And yes, this is far beyond mere "not very pretty"; so's the entire concept of inotify to start with. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Greg KH <greg@kroah.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Re: [PATCH] the loginuid field should be output in all AUDIT_CONFIG_CHANGE ↵zhangxiliang2008-08-011-2/+8
| | | | | | | | | | | | | | audit messages > shouldn't these be using the "audit_get_loginuid(current)" and if we > are going to output loginuid we also should be outputting sessionid Thanks for your detailed explanation. I have made a new patch for outputing "loginuid" and "sessionid" by audit_get_loginuid(current) and audit_get_sessionid(current). If there are some deficiencies, please give me your indication. Signed-off-by: Zhang Xiliang <zhangxiliang@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] remove useless argument type in audit_filter_user()Peng Haitao2008-06-241-1/+1
| | | | | | | The second argument "type" is not used in audit_filter_user(), so I think that type can be removed. If I'm wrong, please tell me. Signed-off-by: Peng Haitao <penght@cn.fujitsu.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit: fix kernel-doc parameter notationRandy Dunlap2008-06-241-0/+1
| | | | | | | | | Fix auditfilter kernel-doc misssing parameter description: Warning(lin2626-rc3//kernel/auditfilter.c:1551): No description found for parameter 'sessionid' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'audit.b50' of ↵Linus Torvalds2008-04-291-20/+25
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b50' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: [PATCH] new predicate - AUDIT_FILETYPE [patch 2/2] Use find_task_by_vpid in audit code [patch 1/2] audit: let userspace fully control TTY input auditing [PATCH 2/2] audit: fix sparse shadowed variable warnings [PATCH 1/2] audit: move extern declarations to audit.h Audit: MAINTAINERS update Audit: increase the maximum length of the key field Audit: standardize string audit interfaces Audit: stop deadlock from signals under load Audit: save audit_backlog_limit audit messages in case auditd comes back Audit: collect sessionid in netlink messages Audit: end printk with newline
| * [PATCH] new predicate - AUDIT_FILETYPEAl Viro2008-04-281-0/+8
| | | | | | | | | | | | | | | | | | | | Argument is S_IF... | <index>, where index is normally 0 or 1. Triggers if chosen element of ctx->names[] is present and the mode of object in question matches the upper bits of argument. I.e. for things like "is the argument of that chmod a directory", etc. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH 2/2] audit: fix sparse shadowed variable warningsHarvey Harrison2008-04-281-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use msglen as the identifier. kernel/audit.c:724:10: warning: symbol 'len' shadows an earlier one kernel/audit.c:575:8: originally declared here Don't use ino_f to check the inode field at the end of the functions. kernel/auditfilter.c:429:22: warning: symbol 'f' shadows an earlier one kernel/auditfilter.c:420:21: originally declared here kernel/auditfilter.c:542:22: warning: symbol 'f' shadows an earlier one kernel/auditfilter.c:529:21: originally declared here i always used as a counter for a for loop and initialized to zero before use. Eliminate the inner i variables. kernel/auditsc.c:1295:8: warning: symbol 'i' shadows an earlier one kernel/auditsc.c:1152:6: originally declared here kernel/auditsc.c:1320:7: warning: symbol 'i' shadows an earlier one kernel/auditsc.c:1152:6: originally declared here Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH 1/2] audit: move extern declarations to audit.hHarvey Harrison2008-04-281-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Leave audit_sig_{uid|pid|sid} protected by #ifdef CONFIG_AUDITSYSCALL. Noticed by sparse: kernel/audit.c:73:6: warning: symbol 'audit_ever_enabled' was not declared. Should it be static? kernel/audit.c:100:8: warning: symbol 'audit_sig_uid' was not declared. Should it be static? kernel/audit.c:101:8: warning: symbol 'audit_sig_pid' was not declared. Should it be static? kernel/audit.c:102:6: warning: symbol 'audit_sig_sid' was not declared. Should it be static? kernel/audit.c:117:23: warning: symbol 'audit_ih' was not declared. Should it be static? kernel/auditfilter.c:78:18: warning: symbol 'audit_filter_list' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * Audit: collect sessionid in netlink messagesEric Paris2008-04-281-7/+9
| | | | | | | | | | | | | | | | | | | | 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>
* | Remove duplicated unlikely() in IS_ERR()Hirofumi Nakagawa2008-04-291-5/+5
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | Some drivers have duplicated unlikely() macros. IS_ERR() already has unlikely() in itself. This patch cleans up such pointless code. Signed-off-by: Hirofumi Nakagawa <hnakagawa@miraclelinux.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Jeff Garzik <jeff@garzik.org> Cc: Paul Clements <paul.clements@steeleye.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Michael Halcrow <mhalcrow@us.ibm.com> Cc: Anton Altaparmakov <aia21@cantab.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Carsten Otte <cotte@de.ibm.com> Cc: Patrick McHardy <kaber@trash.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.de> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Audit: Final renamings and cleanupAhmed S. Darwish2008-04-191-20/+20
| | | | | | | | | Rename the se_str and se_rule audit fields elements to lsm_str and lsm_rule to avoid confusion. 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>
* Audit: internally use the new LSM audit hooksAhmed S. Darwish2008-04-191-44/+17
| | | | | | | | | | | | | | | | | | | | | Convert Audit to use the new LSM Audit hooks instead of the exported SELinux interface. Basically, use: security_audit_rule_init secuirty_audit_rule_free security_audit_rule_known security_audit_rule_match instad of (respectively) : selinux_audit_rule_init selinux_audit_rule_free audit_rule_has_selinux selinux_audit_rule_match 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>
* Audit: use new LSM hooks instead of SELinux exportsAhmed S. Darwish2008-04-191-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | Stop using the following exported SELinux interfaces: selinux_get_inode_sid(inode, sid) selinux_get_ipc_sid(ipcp, sid) selinux_get_task_sid(tsk, sid) selinux_sid_to_string(sid, ctx, len) kfree(ctx) and use following generic LSM equivalents respectively: security_inode_getsecid(inode, secid) security_ipc_getsecid*(ipcp, secid) security_task_getsecid(tsk, secid) security_sid_to_secctx(sid, ctx, len) security_release_secctx(ctx, len) Call security_release_secctx only if security_secid_to_secctx succeeded. 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> Reviewed-by: Paul Moore <paul.moore@hp.com>
* Introduce path_put()Jan Blunck2008-02-141-2/+2
| | | | | | | | | | | | | | | | | | | * Add path_put() functions for releasing a reference to the dentry and vfsmount of a struct path in the right order * Switch from path_release(nd) to path_put(&nd->path) * Rename dput_path() to path_put_conditional() [akpm@linux-foundation.org: fix cifs] Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Cc: <linux-fsdevel@vger.kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Steven French <sfrench@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Embed a struct path into struct nameidata instead of nd->{dentry,mnt}Jan Blunck2008-02-141-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the central patch of a cleanup series. In most cases there is no good reason why someone would want to use a dentry for itself. This series reflects that fact and embeds a struct path into nameidata. Together with the other patches of this series - it enforced the correct order of getting/releasing the reference count on <dentry,vfsmount> pairs - it prepares the VFS for stacking support since it is essential to have a struct path in every place where the stack can be traversed - it reduces the overall code size: without patch series: text data bss dec hex filename 5321639 858418 715768 6895825 6938d1 vmlinux with patch series: text data bss dec hex filename 5320026 858418 715768 6894212 693284 vmlinux This patch: Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix cifs] [akpm@linux-foundation.org: fix smack] Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [AUDIT] make audit=0 really stop audit messagesEric Paris2008-02-011-21/+33
| | | | | | | | Some audit messages (namely configuration changes) are still emitted even if the audit subsystem has been explicitly disabled. This patch turns those messages off as well. Signed-off-by: Eric Paris <eparis@redhat.com>
* [PATCH] audit: watching subtreesAl Viro2007-10-211-7/+57
| | | | | | | | | | | | | | | | | | | New kind of audit rule predicates: "object is visible in given subtree". The part that can be sanely implemented, that is. Limitations: * if you have hardlink from outside of tree, you'd better watch it too (or just watch the object itself, obviously) * if you mount something under a watched tree, tell audit that new chunk should be added to watched subtrees * if you umount something in a watched tree and it's still mounted elsewhere, you will get matches on events happening there. New command tells audit to recalculate the trees, trimming such sources of false positives. Note that it's _not_ about path - if something mounted in several places (multiple mount, bindings, different namespaces, etc.), the match does _not_ depend on which one we are using for access. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* whitespace fixes: audit filteringDaniel Walker2007-10-181-2/+2
| | | | | | | Signed-off-by: Daniel Walker <dwalker@mvista.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] allow audit filtering on bit & operationsEric Paris2007-07-221-0/+11
| | | | | | | | Right now the audit filter can match on = != > < >= blah blah blah. This allow the filter to also look at bitwise AND operations, & Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit: fix broken class-based syscall auditKlaus Weidner2007-07-221-1/+1
| | | | | | | | | | | | The sanity check in audit_match_class() is wrong. We are able to audit 2048 syscalls but in audit_match_class() we were accidentally using sizeof(_u32) instead of number of bits in _u32 when deciding how many syscalls were valid. On ia64 in particular we were hitting syscall numbers over the (wrong) limit of 256. Fixing the audit_match_class check takes care of the problem. Signed-off-by: Klaus Weidner <klaus@atsec.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* kernel/auditfilter: kill bogus uninit'd-var compiler warningJeff Garzik2007-07-171-8/+4
| | | | | | | | | | | | | | | | | Kill this warning... kernel/auditfilter.c: In function ‘audit_receive_filter’: kernel/auditfilter.c:1213: warning: ‘ndw’ may be used uninitialized in this function kernel/auditfilter.c:1213: warning: ‘ndp’ may be used uninitialized in this function ...with a simplification of the code. audit_put_nd() can accept NULL arguments, just like kfree(). It is cleaner to init two existing vars to NULL, remove the redundant test variable 'putnd_needed' branches, and call audit_put_nd() directly. As a desired side effect, the warning goes away. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* audit: fix oops removing watch if audit disabledTony Jones2007-06-241-1/+1
| | | | | | | | | | | | | | | | | Removing a watched file will oops if audit is disabled (auditctl -e 0). To reproduce: - auditctl -e 1 - touch /tmp/foo - auditctl -w /tmp/foo - auditctl -e 0 - rm /tmp/foo (or mv) Signed-off-by: Tony Jones <tonyj@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* audit_match_signal() and friends are used only if CONFIG_AUDITSYSCALL is setAl Viro2007-05-151-0/+2
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] audit signal recipientsAmy Griffis2007-05-111-1/+47
| | | | | | | | | | | | | When auditing syscalls that send signals, log the pid and security context for each target process. Optimize the data collection by adding a counter for signal-related rules, and avoiding allocating an aux struct unless we have more than one target process. For process groups, collect pid/context data in blocks of 16. Move the audit_signal_info() hook up in check_kill_permission() so we audit attempts where permission is denied. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] minor update to rule add/delete messages (ver 2)Steve Grubb2007-02-171-4/+5
| | | | | | | | | I was looking at parsing some of these messages and found that I wanted what it was doing next to an op= for the parser to key on. Also missing was the list number and results. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit: fix audit_filter_user_rules() initialization bugIngo Molnar2007-02-111-1/+1
| | | | | | | | | | | | | | | | | gcc emits this warning: kernel/auditfilter.c: In function 'audit_filter_user': kernel/auditfilter.c:1611: warning: 'state' is used uninitialized in this function I tend to agree with gcc - there are a couple of plausible exit paths from audit_filter_user_rules() where it does not set 'state', keeping the variable uninitialized. For example if a filter rule has an AUDIT_POSSIBLE action. Initialize to 'wont audit'. Fix whitespace damage too. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] audit: fix kstrdup() error checkAkinobu Mita2006-12-221-2/+2
| | | | | | | | | | kstrdup() returns NULL on error. Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] kernel core: replace kmalloc+memset with kzallocBurman Yan2006-12-071-2/+1
| | | | | Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arch filter lists with < or > should not be acceptedEric Paris2006-10-041-1/+8
| | | | | | | | | | | | | | | | | | | | | | Currently the kernel audit system represents arch's as numbers and will gladly accept comparisons between archs using >, <, >=, <= when the only thing that makes sense is = or !=. I'm told that the next revision of auditctl will do this checking but this will provide enforcement in the kernel even for old userspace. A simple command to show the issue would be to run auditctl -d entry,always -F arch>i686 -S chmod with this patch the kernel will reject this with -EINVAL Please comment/ack/nak as soon as possible. -Eric kernel/auditfilter.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] selinux: rename selinux_ctxid_to_stringStephen Smalley2006-09-261-1/+1
| | | | | | | | | | Rename selinux_ctxid_to_string to selinux_sid_to_string to be consistent with other interfaces. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] audit: AUDIT_PERM supportAl Viro2006-09-111-0/+17
| | | | | | add support for AUDIT_PERM predicate Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] update audit rule change messagesAmy Griffis2006-09-111-5/+14
| | | | | | | | Make the audit message for implicit rule removal more informative. Make the rule update message consistent with other messages. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] fix ppid bug in 2.6.18 kernelSteve Grubb2006-09-111-0/+1
| | | | | | | | | | | Hello, During some troubleshooting, I found that ppid was accidentally omitted from the legacy rule section. This resulted in EINVAL for any rule with ppid sent with AUDIT_ADD. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] introduce audit rules counterAl Viro2006-08-031-0/+24
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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