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* [AUDIT] create context if auditing was ever enabledEric Paris2008-02-01
| | | | | | | | | | Disabling audit at runtime by auditctl doesn't mean that we can stop allocating contexts for new processes; we don't want to miss them when that sucker is reenabled. (based on work from Al Viro in the RHEL kernel series) Signed-off-by: Eric Paris <eparis@redhat.com>
* [AUDIT] break large execve argument logging into smaller messagesEric Paris2008-02-01
| | | | | | | | | | | | | execve arguments can be quite large. There is no limit on the number of arguments and a 4G limit on the size of an argument. this patch prints those aruguments in bite sized pieces. a userspace size limitation of 8k was discovered so this keeps messages around 7.5k single arguments larger than 7.5k in length are split into multiple records and can be identified as aX[Y]= Signed-off-by: Eric Paris <eparis@redhat.com>
* [AUDIT] do not panic on exclude messages in audit_log_pid_context()Eric Paris2008-02-01
| | | | | | | | If we fail to get an ab in audit_log_pid_context this may be due to an exclude rule rather than a memory allocation failure. If it was due to a memory allocation failue we would have already paniced and no need to do it again. Signed-off-by: Eric Paris <eparis@redhat.com>
* [AUDIT] Add End of Event recordEric Paris2008-02-01
| | | | | | | | | | | This patch adds an end of event record type. It will be sent by the kernel as the last record when a multi-record event is triggered. This will aid realtime analysis programs since they will now reliably know they have the last record to complete an event. The audit daemon filters this and will not write it to disk. Signed-off-by: Steve Grubb <sgrubb redhat com> Signed-off-by: Eric Paris <eparis@redhat.com>
* [AUDIT] add session id to audit messagesEric Paris2008-02-01
| | | | | | | | | 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>
* [AUDIT] collect uid, loginuid, and comm in OBJ_PID recordsEric Paris2008-02-01
| | | | | | | | | | Add uid, loginuid, and comm collection to OBJ_PID records. This just gives users a little more information about the task that received a signal. pid is rather meaningless after the fact, and even though comm isn't great we can't collect exe reasonably on this code path for performance reasons. Signed-off-by: Eric Paris <eparis@redhat.com>
* [AUDIT] return EINTR not ERESTART*Eric Paris2008-02-01
| | | | | | | | The syscall exit code will change ERESTART* kernel internal return codes to EINTR if it does not restart the syscall. Since we collect the audit info before that point we should fix those in the audit log as well. Signed-off-by: Eric Paris <eparis@redhat.com>
* [PATCH] get rid of loginuid racesAl Viro2008-02-01
| | | | | | | | Keeping loginuid in audit_context is racy and results in messier code. Taken to task_struct, out of the way of ->audit_context changes. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] switch audit_get_loginuid() to task_struct *Al Viro2008-02-01
| | | | | | all callers pass something->audit_context Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* auditsc: fix kernel-doc param warningsRandy Dunlap2007-10-22
| | | | | | | | | | Fix kernel-doc for auditsc parameter changes. Warning(linux-2.6.23-git17//kernel/auditsc.c:1623): No description found for parameter 'dentry' Warning(linux-2.6.23-git17//kernel/auditsc.c:1666): No description found for parameter 'dentry' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] audit: watching subtreesAl Viro2007-10-21
| | | | | | | | | | | | | | | | | | | 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>
* [PATCH] pass dentry to audit_inode()/audit_inode_child()Al Viro2007-10-21
| | | | | | makes caller simpler *and* allows to scan ancestors Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* whitespace fixes: syscall auditingDaniel Walker2007-10-18
| | | | | | | 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>
* Clean up duplicate includes in kernel/Jesper Juhl2007-10-17
| | | | | | | | | | | This patch cleans up duplicate includes in kernel/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Satyam Sharma <ssatyam@cse.iitk.ac.in> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* SUNRPC: Convert rpc_pipefs to use the generic filesystem notification hooksTrond Myklebust2007-10-09
| | | | | | | | | | | This will allow rpc.gssd to use inotify instead of dnotify in order to locate new rpc upcall pipes. This also requires the exporting of __audit_inode_child(), which is used by fsnotify_create() and fsnotify_mkdir(). Ccing David Woodhouse. Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* kernel/auditsc.c: fix an off-by-oneAdrian Bunk2007-08-22
| | | | | | | | | | | This patch fixes an off-by-one in a BUG_ON() spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Amy Griffis <amy.griffis@hp.com> 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>
* fix oops in __audit_signal_info()Al Viro2007-08-07
| | | | | | | | | | | The check for audit_signals is misplaced and the check for audit_dummy_context() is missing; as the result, if we send a signal to auditd from task with NULL ->audit_context while we have audit_signals != 0 we end up with an oops. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* audit: fix two bugs in the new execve audit codePeter Zijlstra2007-07-28
| | | | | | | | | | | | copy_from_user() returns the number of bytes not copied, hence 0 is the expected output. axi->mm might not be valid anymore when not equal to current->mm, do not dereference before checking that - thanks to Al for spotting that. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] get rid of AVC_PATH postponed treatmentAl Viro2007-07-22
| | | | | | | | | | | | | | | | | Selinux folks had been complaining about the lack of AVC_PATH records when audit is disabled. I must admit my stupidity - I assumed that avc_audit() really couldn't use audit_log_d_path() because of deadlocks (== could be called with dcache_lock or vfsmount_lock held). Shouldn't have made that assumption - it never gets called that way. It _is_ called under spinlocks, but not those. Since audit_log_d_path() uses ab->gfp_mask for allocations, kmalloc() in there is not a problem. IOW, the simple fix is sufficient: let's rip AUDIT_AVC_PATH out and simply generate pathname as part of main record. It's trivial to do. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: James Morris <jmorris@namei.org>
* [PATCH] Make IPC mode consistentSteve Grubb2007-07-22
| | | | | | | | The mode fields for IPC records are not consistent. Some are hex, others are octal. This patch makes them all octal. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* mm: variable length argument supportOllie Wild2007-07-19
| | | | | | | | | | | | | | | | | | | | | | Remove the arg+env limit of MAX_ARG_PAGES by copying the strings directly from the old mm into the new mm. We create the new mm before the binfmt code runs, and place the new stack at the very top of the address space. Once the binfmt code runs and figures out where the stack should be, we move it downwards. It is a bit peculiar in that we have one task with two mm's, one of which is inactive. [a.p.zijlstra@chello.nl: limit stack size] Signed-off-by: Ollie Wild <aaw@google.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: <linux-arch@vger.kernel.org> Cc: Hugh Dickins <hugh@veritas.com> [bunk@stusta.de: unexport bprm_mm_init] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* audit: rework execve auditPeter Zijlstra2007-07-19
| | | | | | | | | | | | | | | | | | | | | | | The purpose of audit_bprm() is to log the argv array to a userspace daemon at the end of the execve system call. Since user-space hasn't had time to run, this array is still in pristine state on the process' stack; so no need to copy it, we can just grab it from there. In order to minimize the damage to audit_log_*() copy each string into a temporary kernel buffer first. Currently the audit code requires that the full argument vector fits in a single packet. So currently it does clip the argv size to a (sysctl) limit, but only when execve auditing is enabled. If the audit protocol gets extended to allow for multiple packets this check can be removed. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ollie Wild <aaw@google.com> Cc: <linux-audit@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kerneldoc fix in audit_core_dumpsHenrik Kretzschmar2007-07-16
| | | | | | | | | Fix parameter name in audit_core_dumps for kerneldoc. Signed-off-by: Henrik Kretzschmar <henne@nachtwindheim.de> 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>
* Audit: add TTY input auditingMiloslav Trmac2007-07-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add TTY input auditing, used to audit system administrator's actions. This is required by various security standards such as DCID 6/3 and PCI to provide non-repudiation of administrator's actions and to allow a review of past actions if the administrator seems to overstep their duties or if the system becomes misconfigured for unknown reasons. These requirements do not make it necessary to audit TTY output as well. Compared to an user-space keylogger, this approach records TTY input using the audit subsystem, correlated with other audit events, and it is completely transparent to the user-space application (e.g. the console ioctls still work). TTY input auditing works on a higher level than auditing all system calls within the session, which would produce an overwhelming amount of mostly useless audit events. Add an "audit_tty" attribute, inherited across fork (). Data read from TTYs by process with the attribute is sent to the audit subsystem by the kernel. The audit netlink interface is extended to allow modifying the audit_tty attribute, and to allow sending explanatory audit events from user-space (for example, a shell might send an event containing the final command, after the interactive command-line editing and history expansion is performed, which might be difficult to decipher from the TTY input alone). Because the "audit_tty" attribute is inherited across fork (), it would be set e.g. for sshd restarted within an audited session. To prevent this, the audit_tty attribute is cleared when a process with no open TTY file descriptors (e.g. after daemon startup) opens a TTY. See https://www.redhat.com/archives/linux-audit/2007-June/msg00000.html for a more detailed rationale document for an older version of this patch. [akpm@linux-foundation.org: build fix] Signed-off-by: Miloslav Trmac <mitr@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Casey Schaufler <casey@schaufler-ca.com> Cc: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] Abnormal End of ProcessesSteve Grubb2007-05-11
| | | | | | | | | | | | | Hi, I have been working on some code that detects abnormal events based on audit system events. One kind of event that we currently have no visibility for is when a program terminates due to segfault - which should never happen on a production machine. And if it did, you'd want to investigate it. Attached is a patch that collects these events and sends them into the audit system. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] match audit name dataAmy Griffis2007-05-11
| | | | | | | | | Make more effort to detect previously collected names, so we don't log multiple PATH records for a single filesystem object. Add audit_inc_name_count() to reduce duplicate code. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] complete message queue auditingAmy Griffis2007-05-11
| | | | | | | | | | Handle the edge cases for POSIX message queue auditing. Collect inode info when opening an existing mq, and for send/receive operations. Remove audit_inode_update() as it has really evolved into the equivalent of audit_inode(). Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] initialize name osidAmy Griffis2007-05-11
| | | | | | | | | Audit contexts can be reused, so initialize a name's osid to the default in audit_getname(). This ensures we don't log a bogus object label when no inode data is collected for a name. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit signal recipientsAmy Griffis2007-05-11
| | | | | | | | | | | | | 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] auditing ptraceAl Viro2007-05-11
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] fix deadlock in audit_log_task_context()Al Viro2007-03-14
| | | | | | | | | | GFP_KERNEL allocations in non-blocking context; fixed by killing an idiotic use of security_getprocattr(). Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: James Morris <jmorris@namei.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] AUDIT_FD_PAIRAl Viro2007-02-17
| | | | | | | | Provide an audit record of the descriptor pair returned by pipe() and socketpair(). Rewritten from the original posted to linux-audit by John D. Ramsdell <ramsdell@mitre.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] struct path: convert kernelJosef Sipek2006-12-08
| | | | | | Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] tty: ->signal->tty lockingPeter Zijlstra2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the locking of signal->tty. Use ->sighand->siglock to protect ->signal->tty; this lock is already used by most other members of ->signal/->sighand. And unless we are 'current' or the tasklist_lock is held we need ->siglock to access ->signal anyway. (NOTE: sys_unshare() is broken wrt ->sighand locking rules) Note that tty_mutex is held over tty destruction, so while holding tty_mutex any tty pointer remains valid. Otherwise the lifetime of ttys are governed by their open file handles. This leaves some holes for tty access from signal->tty (or any other non file related tty access). It solves the tty SLAB scribbles we were seeing. (NOTE: the change from group_send_sig_info to __group_send_sig_info needs to be examined by someone familiar with the security framework, I think it is safe given the SEND_SIG_PRIV from other __group_send_sig_info invocations) [schwidefsky@de.ibm.com: 3270 fix] [akpm@osdl.org: various post-viro fixes] Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Alan Cox <alan@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Roland McGrath <roland@redhat.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* audit: Add auditing to ipsecJoy Latten2006-12-06
| | | | | | | | | An audit message occurs when an ipsec SA or ipsec policy is created/deleted. Signed-off-by: Joy Latten <latten@austin.ibm.com> Signed-off-by: James Morris <jmorris@namei.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] severing skbuff.h -> highmem.hAl Viro2006-12-04
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] name_count array overrunSteve Grubb2006-10-04
| | | | | | | | | | | | Hi, This patch removes the rdev logging from the previous patch The below patch closes an unbounded use of name_count. This can lead to oopses in some new file systems. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] PPID filtering fixAlexander Viro2006-10-04
| | | | | | | | | | | | | On Thu, Sep 28, 2006 at 04:03:06PM -0400, Eric Paris wrote: > After some looking I did not see a way to get into audit_log_exit > without having set the ppid. So I am dropping the set from there and > only doing it at the beginning. > > Please comment/ack/nak as soon as possible. Ehh... That's one hell of an overhead to be had ;-/ Let's be lazy. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit/accounting: tty lockingAlan Cox2006-09-29
| | | | | | | | | | | | | | Add tty locking around the audit and accounting code. The whole current->signal-> locking is all deeply strange but it's for someone else to sort out. Add rather than replace the lock for acct.c Signed-off-by: Alan Cox <alan@redhat.com> Acked-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] selinux: rename selinux_ctxid_to_stringStephen Smalley2006-09-26
| | | | | | | | | | 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] selinux: eliminate selinux_task_ctxidStephen Smalley2006-09-26
| | | | | | | | | Eliminate selinux_task_ctxid since it duplicates selinux_task_get_sid. 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 Viro2006-09-11
| | | | | | add support for AUDIT_PERM predicate Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] take filling ->pid, etc. out of audit_get_context()Al Viro2006-08-03
| | | | | | | move that stuff downstream and into the only branch where it'll be used. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] don't bother with aux entires for dummy contextAl Viro2006-08-03
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] mark context of syscall entered with no rules as dummyAl Viro2006-08-03
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] introduce audit rules counterAl Viro2006-08-03
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] fix missed create event for directory auditAmy Griffis2006-08-03
| | | | | | | | | | When an object is created via a symlink into an audited directory, audit misses the event due to not having collected the inode data for the directory. Modify __audit_inode_child() to copy the parent inode data if a parent wasn't found in audit_names[]. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] fix faulty inode data collection for open() with O_CREATAmy Griffis2006-08-03
| | | | | | | | | | | When the specified path is an existing file or when it is a symlink, audit collects the wrong inode number, which causes it to miss the open() event. Adding a second hook to the open() path fixes this. Also add audit_copy_inode() to consolidate some code. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit: support for object context filtersDarrel Goeddel2006-07-01
| | | | | | | | | | | | | | This patch introduces object audit filters based on the elements of the SELinux context. Signed-off-by: Darrel Goeddel <dgoeddel@trustedcs.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> kernel/auditfilter.c | 25 +++++++++++++++++++++++++ kernel/auditsc.c | 40 ++++++++++++++++++++++++++++++++++++++++ security/selinux/ss/services.c | 18 +++++++++++++++++- 3 files changed, 82 insertions(+), 1 deletion(-) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit: rename AUDIT_SE_* constantsDarrel Goeddel2006-07-01
| | | | | | | | | | | | | | | This patch renames some audit constant definitions and adds additional definitions used by the following patch. The renaming avoids ambiguity with respect to the new definitions. Signed-off-by: Darrel Goeddel <dgoeddel@trustedcs.com> include/linux/audit.h | 15 ++++++++---- kernel/auditfilter.c | 50 ++++++++++++++++++++--------------------- kernel/auditsc.c | 10 ++++---- security/selinux/ss/services.c | 32 +++++++++++++------------- 4 files changed, 56 insertions(+), 51 deletions(-) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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