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2006-05-01[PATCH] More user space subject labelsSteve Grubb1-30/+102
Hi, The patch below builds upon the patch sent earlier and adds subject label to all audit events generated via the netlink interface. It also cleans up a few other minor things. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-01[PATCH] Reworked patch for labels on user space messagesSteve Grubb1-3/+19
The below patch should be applied after the inode and ipc sid patches. This patch is a reworking of Tim's patch that has been updated to match the inode and ipc patches since its similar. [updated: > Stephen Smalley also wanted to change a variable from isec to tsec in the > user sid patch. ] Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-01[PATCH] support for context based audit filtering, part 2Darrel Goeddel1-0/+8
This patch provides the ability to filter audit messages based on the elements of the process' SELinux context (user, role, type, mls sensitivity, and mls clearance). It uses the new interfaces from selinux to opaquely store information related to the selinux context and to filter based on that information. It also uses the callback mechanism provided by selinux to refresh the information when a new policy is loaded. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-31[PATCH] Don't pass boot parameters to argv_init[]OGAWA Hirofumi1-1/+1
The boot cmdline is parsed in parse_early_param() and parse_args(,unknown_bootoption). And __setup() is used in obsolete_checksetup(). start_kernel() -> parse_args() -> unknown_bootoption() -> obsolete_checksetup() If __setup()'s callback (->setup_func()) returns 1 in obsolete_checksetup(), obsolete_checksetup() thinks a parameter was handled. If ->setup_func() returns 0, obsolete_checksetup() tries other ->setup_func(). If all ->setup_func() that matched a parameter returns 0, a parameter is seted to argv_init[]. Then, when runing /sbin/init or init=app, argv_init[] is passed to the app. If the app doesn't ignore those arguments, it will warning and exit. This patch fixes a wrong usage of it, however fixes obvious one only. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-20[PATCH] fix audit_init failure pathAmy Griffis1-1/+2
Make audit_init() failure path handle situations where the audit_panic() action is not AUDIT_FAIL_PANIC (default is AUDIT_FAIL_PRINTK). Other uses of audit_sock are not reached unless audit's netlink message handler is properly registered. Bug noticed by Peter Staubach. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-20[PATCH] EXPORT_SYMBOL patch for audit_log, audit_log_start, audit_log_end and audit_formatlorenzo@gnu.org1-0/+5
Hi, This is a trivial patch that enables the possibility of using some auditing functions within loadable kernel modules (ie. inside a Linux Security Module). _ Make the audit_log_start, audit_log_end, audit_format and audit_log interfaces available to Loadable Kernel Modules, thus making possible the usage of the audit framework inside LSMs, etc. Signed-off-by: <Lorenzo Hernández García-Hierro <lorenzo@gnu.org>> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-20[PATCH] sem2mutex: audit_netlink_semIngo Molnar1-3/+3
Semaphore to mutex conversion. The conversion was generated via scripts, and the result was validated automatically via a script as well. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-20[PATCH] audit string fields interface + consumerAmy Griffis1-2/+17
Updated patch to dynamically allocate audit rule fields in kernel's internal representation. Added unlikely() calls for testing memory allocation result. Amy Griffis wrote: [Wed Jan 11 2006, 02:02:31PM EST] > Modify audit's kernel-userspace interface to allow the specification > of string fields in audit rules. > > Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> (cherry picked from 5ffc4a863f92351b720fe3e9c5cd647accff9e03 commit)
2006-03-20[PATCH] Fix audit record filtering with !CONFIG_AUDITSYSCALLDavid Woodhouse1-0/+1
This fixes the per-user and per-message-type filtering when syscall auditing isn't enabled. [AV: folded followup fix from the same author] Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-20[PATCH] Capture selinux subject/object context information.Dustin Kirkland1-1/+1
This patch extends existing audit records with subject/object context information. Audit records associated with filesystem inodes, ipc, and tasks now contain SELinux label information in the field "subj" if the item is performing the action, or in "obj" if the item is the receiver of an action. These labels are collected via hooks in SELinux and appended to the appropriate record in the audit code. This additional information is required for Common Criteria Labeled Security Protection Profile (LSPP). [AV: fixed kmalloc flags use] [folded leak fixes] [folded cleanup from akpm (kfree(NULL)] [folded audit_inode_context() leak fix] [folded akpm's fix for audit_ipc_perm() definition in case of !CONFIG_AUDIT] Signed-off-by: Dustin Kirkland <dustin.kirkland@us.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-20[PATCH] Exclude messages by message typeDustin Kirkland1-0/+3
- Add a new, 5th filter called "exclude". - And add a new field AUDIT_MSGTYPE. - Define a new function audit_filter_exclude() that takes a message type as input and examines all rules in the filter. It returns '1' if the message is to be excluded, and '0' otherwise. - Call the audit_filter_exclude() function near the top of audit_log_start() just after asserting audit_initialized. If the message type is not to be audited, return NULL very early, before doing a lot of work. [combined with followup fix for bug in original patch, Nov 4, same author] [combined with later renaming AUDIT_FILTER_EXCLUDE->AUDIT_FILTER_TYPE and audit_filter_exclude() -> audit_filter_type()] Signed-off-by: Dustin Kirkland <dustin.kirkland@us.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-03-20[PATCH] Define new range of userspace messages.Steve Grubb1-0/+2
The attached patch updates various items for the new user space messages. Please apply. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-03-20[PATCH] AUDIT: kerneldoc for kernel/audit*.cRandy Dunlap1-28/+106
- add kerneldoc for non-static functions; - don't init static data to 0; - limit lines to < 80 columns; - fix long-format style; - delete whitespace at end of some lines; (chrisw: resend and update to current audit-2.6 tree) Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-01-18[PATCH] EDAC: atomic scrub operationsAlan Cox1-1/+1
EDAC requires a way to scrub memory if an ECC error is found and the chipset does not do the work automatically. That means rewriting memory locations atomically with respect to all CPUs _and_ bus masters. That means we can't use atomic_add(foo, 0) as it gets optimised for non-SMP This adds a function to include/asm-foo/atomic.h for the platforms currently supported which implements a scrub of a mapped block. It also adjusts a few other files include order where atomic.h is included before types.h as this now causes an error as atomic_scrub uses u32. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08[PATCH] kernel/: small cleanupsAdrian Bunk1-1/+1
This patch contains the following cleanups: - make needlessly global functions static - every file should include the headers containing the prototypes for it's global functions Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-12-12[PATCH] Add try_to_freeze to kauditdPierre Ossman1-1/+3
kauditd was causing suspends to fail because it refused to freeze. Adding a try_to_freeze() to its sleep loop solves the issue. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> Acked-by: Pavel Machek <pavel@suse.cz> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[PATCH] gfp_t: kernel/*Al Viro1-3/+3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-08[PATCH] gfp flags annotations - part 1Al Viro1-1/+1
- added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-13Merge master.kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6 Linus Torvalds1-49/+79
2005-08-29[NETLINK]: Add "groups" argument to netlink_kernel_createPatrick McHardy1-1/+1
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-29[NETLINK]: Add properly module refcounting for kernel netlink sockets.Harald Welte1-1/+2
- Remove bogus code for compiling netlink as module - Add module refcounting support for modules implementing a netlink protocol - Add support for autoloading modules that implement a netlink protocol as soon as someone opens a socket for that protocol Signed-off-by: Harald Welte <laforge@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-08-17AUDIT: Prevent duplicate syscall rulesAmy Griffis1-5/+0
The following patch against audit.81 prevents duplicate syscall rules in a given filter list by walking the list on each rule add. I also removed the unused struct audit_entry in audit.c and made the static inlines in auditsc.c consistent. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-07-18AUDIT: Reduce contention in audit_serial()David Woodhouse1-1/+3
... by generating serial numbers only if an audit context is actually _used_, rather than doing so at syscall entry even when the context isn't necessarily marked auditable. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-07-15AUDIT: Fix livelock in audit_serial().David Woodhouse1-11/+10
The tricks with atomic_t were bizarre. Just do it sensibly instead. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-07-13[AUDIT] Fix sparse warning about gfp_mask typeVictor Fusco1-1/+1
Fix the sparse warning "implicit cast to nocast type" Signed-off-by: Victor Fusco <victor@cetuc.puc-rio.br> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-07-02AUDIT: Stop waiting for backlog after audit_panic() happensDavid Woodhouse1-5/+10
We force a rate-limit on auditable events by making them wait for space on the backlog queue. However, if auditd really is AWOL then this could potentially bring the entire system to a halt, depending on the audit rules in effect. Firstly, make sure the wait time is honoured correctly -- it's the maximum time the process should wait, rather than the time to wait _each_ time round the loop. We were getting re-woken _each_ time a packet was dequeued, and the timeout was being restarted each time. Secondly, reset the wait time after audit_panic() is called. In general this will be reset to zero, to allow progress to be made. If the system is configured to _actually_ panic on audit_panic() then that will already have happened; otherwise we know that audit records are being lost anyway. These two tunables can't be exposed via AUDIT_GET and AUDIT_SET because those aren't particularly well-designed. It probably should have been done by sysctls or sysfs anyway -- one for a later patch. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-24AUDIT: Use KERN_NOTICE for printk of audit recordsDavid Woodhouse1-2/+2
They aren't errors. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-24AUDIT: Clean up user message filteringDavid Woodhouse1-1/+1
Don't look up the task by its pid and then use the syscall filtering helper. Just implement our own filter helper which operates solely on the information in the netlink_skb_parms. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-22AUDIT: Remove stray declaration of tsk from audit_receive_msg().David Woodhouse1-1/+0
It's not used any more. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-22AUDIT: Wait for backlog to clear when generating messages.David Woodhouse1-15/+45
Add a gfp_mask to audit_log_start() and audit_log(), to reduce the amount of GFP_ATOMIC allocation -- most of it doesn't need to be GFP_ATOMIC. Also if the mask includes __GFP_WAIT, then wait up to 60 seconds for the auditd backlog to clear instead of immediately abandoning the message. The timeout should probably be made configurable, but for now it'll suffice that it only happens if auditd is actually running. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-22AUDIT: Optimise the audit-disabled case for discarding user messagesDavid Woodhouse1-18/+14
Also exempt USER_AVC message from being discarded to preserve existing behaviour for SE Linux. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-21AUDIT: Spawn kernel thread to list filter rules.David Woodhouse1-1/+1
If we have enough rules to fill the netlink buffer space, it'll deadlock because auditctl isn't ever actually going to read from the socket until we return, and we aren't going to return until it reads... so we spawn a kernel thread to spew out the list and then exit. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-20AUDIT: Drop user-generated messages immediately while auditing disabled.David Woodhouse1-1/+1
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-06-19AUDIT: Allow filtering of user messagesDavid Woodhouse1-16/+20
Turn the field from a bitmask to an enumeration and add a list to allow filtering of messages generated by userspace. We also define a list for file system watches in anticipation of that feature. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-23AUDIT: Unify auid reporting, put arch before syscall numberDavid Woodhouse1-5/+5
These changes make processing of audit logs easier. Based on a patch from Steve Grubb <sgrubb@redhat.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-21AUDIT: Assign serial number to non-syscall messagesDavid Woodhouse1-4/+42
Move audit_serial() into audit.c and use it to generate serial numbers on messages even when there is no audit context from syscall auditing. This allows us to disambiguate audit records when more than one is generated in the same millisecond. Based on a patch by Steve Grubb after he observed the problem. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-21AUDIT: Fix inconsistent use of loginuid vs. auid, signed vs. unsigned Steve Grubb1-5/+2
The attached patch changes all occurrences of loginuid to auid. It also changes everything to %u that is an unsigned type. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-21AUDIT: Fix AVC_USER message passing.Steve Grubb1-0/+2
The original AVC_USER message wasn't consolidated with the new range of user messages. The attached patch fixes the kernel so the old messages work again. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-19AUDIT: Honour audit_backlog_limit again.David Woodhouse1-0/+12
The limit on the number of outstanding audit messages was inadvertently removed with the switch to queuing skbs directly for sending by a kernel thread. Put it back again. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-19AUDIT: Send netlink messages from a separate kernel threadDavid Woodhouse1-121/+70
netlink_unicast() will attempt to reallocate and will free messages if the socket's rcvbuf limit is reached unless we give it an infinite timeout. So do that, from a kernel thread which is dedicated to spewing stuff up the netlink socket. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-19AUDIT: Clean up logging of untrusted stringsSteve Grubb1-23/+48
* If vsnprintf returns -1, it will mess up the sk buffer space accounting. This is fixed by not calling skb_put with bogus len values. * audit_log_hex was a loop that called audit_log_vformat with %02X for each character. This is very inefficient since conversion from unsigned character to Ascii representation is essentially masking, shifting, and byte lookups. Also, the length of the converted string is well known - it's twice the original. Fixed by rewriting the function. * audit_log_untrustedstring had no comments. This makes it hard for someone to understand what the string format will be. * audit_log_d_path was never fixed to use untrustedstring. This could mess up user space parsers. This was fixed to make a temp buffer, call d_path, and log temp buffer using untrustedstring. From: Steve Grubb <sgrubb@redhat.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-18AUDIT: Treat all user messages identically.David Woodhouse1-18/+2
It's silly to have to add explicit entries for new userspace messages as we invent them. Just treat all messages in the user range the same. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13AUDIT: fix max_t thinko.David Woodhouse1-1/+1
Der... if you use max_t it helps if you give it a type. Note to self: Always just apply the tested patches, don't try to port them by hand. You're not clever enough. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13AUDIT: Fix some spelling errorsSteve Grubb1-2/+2
I'm going through the kernel code and have a patch that corrects several spelling errors in comments. From: Steve Grubb <sgrubb@redhat.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13AUDIT: Add message types to audit recordsSteve Grubb1-23/+55
This patch adds more messages types to the audit subsystem so that audit analysis is quicker, intuitive, and more useful. Signed-off-by: Steve Grubb <sgrubb@redhat.com> --- I forgot one type in the big patch. I need to add one for user space originating SE Linux avc messages. This is used by dbus and nscd. -Steve --- Updated to 2.6.12-rc4-mm1. -dwmw2 Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-13AUDIT: Round up audit skb expansion to AUDIT_BUFSIZ.David Woodhouse1-1/+1
Otherwise, we will be repeatedly reallocating, even if we're only adding a few bytes at a time. Pointed out by Steve Grubb. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11Add audit_log_typeChris Wright1-33/+15
Add audit_log_type to allow callers to specify type and pid when logging. Convert audit_log to wrapper around audit_log_type. Could have converted all audit_log callers directly, but common case is default of type AUDIT_KERNEL and pid 0. Update audit_log_start to take type and pid values when creating a new audit_buffer. Move sequences that did audit_log_start, audit_log_format, audit_set_type, audit_log_end, to simply call audit_log_type directly. This obsoletes audit_set_type and audit_set_pid, so remove them. Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11Move ifdef CONFIG_AUDITSYSCALL to headerChris Wright1-10/+2
Remove code conditionally dependent on CONFIG_AUDITSYSCALL from audit.c. Move these dependencies to audit.h with the rest. Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11Audit requires CONFIG_NETChris Wright1-30/+0
Audit now actually requires netlink. So make it depend on CONFIG_NET, and remove the inline dependencies on CONFIG_NET. Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2005-05-11AUDIT: Properly account for alignment difference in nlmsg_len.Chris Wright1-1/+1
Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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