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* audit: wait_for_auditd() should use TASK_UNINTERRUPTIBLEOleg Nesterov2013-06-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | audit_log_start() does wait_for_auditd() in a loop until audit_backlog_wait_time passes or audit_skb_queue has a room. If signal_pending() is true this becomes a busy-wait loop, schedule() in TASK_INTERRUPTIBLE won't block. Thanks to Guy for fully investigating and explaining the problem. (akpm: that'll cause the system to lock up on a non-preemptible uniprocessor kernel) (Guy: "Our customer was in fact running a uniprocessor machine, and they reported a system hang.") Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reported-by: Guy Streeter <streeter@redhat.com> Cc: Eric Paris <eparis@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.infradead.org/users/eparis/auditLinus Torvalds2013-05-111-166/+350
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull audit changes from Eric Paris: "Al used to send pull requests every couple of years but he told me to just start pushing them to you directly. Our touching outside of core audit code is pretty straight forward. A couple of interface changes which hit net/. A simple argument bug calling audit functions in namei.c and the removal of some assembly branch prediction code on ppc" * git://git.infradead.org/users/eparis/audit: (31 commits) audit: fix message spacing printing auid Revert "audit: move kaudit thread start from auditd registration to kaudit init" audit: vfs: fix audit_inode call in O_CREAT case of do_last audit: Make testing for a valid loginuid explicit. audit: fix event coverage of AUDIT_ANOM_LINK audit: use spin_lock in audit_receive_msg to process tty logging audit: do not needlessly take a lock in tty_audit_exit audit: do not needlessly take a spinlock in copy_signal audit: add an option to control logging of passwords with pam_tty_audit audit: use spin_lock_irqsave/restore in audit tty code helper for some session id stuff audit: use a consistent audit helper to log lsm information audit: push loginuid and sessionid processing down audit: stop pushing loginid, uid, sessionid as arguments audit: remove the old depricated kernel interface audit: make validity checking generic audit: allow checking the type of audit message in the user filter audit: fix build break when AUDIT_DEBUG == 2 audit: remove duplicate export of audit_enabled Audit: do not print error when LSMs disabled ...
| * audit: fix message spacing printing auidEric Paris2013-05-081-1/+1
| | | | | | | | | | | | | | The helper function didn't include a leading space, so it was jammed against the previous text in the audit record. Signed-off-by: Eric Paris <eparis@redhat.com>
| * Revert "audit: move kaudit thread start from auditd registration to kaudit init"Eric Paris2013-05-071-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 6ff5e45985c2fcb97947818f66d1eeaf9d6600b2. Conflicts: kernel/audit.c This patch was starting a kthread for all the time. Since the follow on patches that required it didn't get finished in 3.10 time, we shouldn't ship this change in 3.10. Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: fix event coverage of AUDIT_ANOM_LINKEric Paris2013-04-301-8/+236
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The userspace audit tools didn't like the existing formatting of the AUDIT_ANOM_LINK event. It needed to be expanded to emit an AUDIT_PATH event as well, so this implements the change. The bulk of the patch is moving code out of auditsc.c into audit.c and audit.h for general use. It expands audit_log_name to include an optional "struct path" argument for the simple case of just needing to report a pathname. This also makes audit_log_task_info available when syscall auditing is not enabled, since it is needed in either case for process details. Signed-off-by: Kees Cook <keescook@chromium.org> Reported-by: Steve Grubb <sgrubb@redhat.com>
| * audit: use spin_lock in audit_receive_msg to process tty loggingEric Paris2013-04-301-6/+4
| | | | | | | | | | | | | | | | This function is called when we receive a netlink message from userspace. We don't need to worry about it coming from irq context or irqs making it re-entrant. Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: add an option to control logging of passwords with pam_tty_auditRichard Guy Briggs2013-04-301-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Most commands are entered one line at a time and processed as complete lines in non-canonical mode. Commands that interactively require a password, enter canonical mode to do this while shutting off echo. This pair of features (icanon and !echo) can be used to avoid logging passwords by audit while still logging the rest of the command. Adding a member (log_passwd) to the struct audit_tty_status passed in by pam_tty_audit allows control of canonical mode without echo per task. Signed-off-by: Richard Guy Briggs <rgb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: use spin_lock_irqsave/restore in audit tty codeEric Paris2013-04-301-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | Some of the callers of the audit tty function use spin_lock_irqsave/restore. We were using the forced always enable version, which seems really bad. Since I don't know every one of these code paths well enough, it makes sense to just switch everything to the safe version. Maybe it's a little overzealous, but it's a lot better than an unlucky deadlock when we return to a caller with irq enabled and they expect it to be disabled. Signed-off-by: Eric Paris <eparis@redhat.com>
| * helper for some session id stuffEric Paris2013-04-301-8/+12
| |
| * audit: use a consistent audit helper to log lsm informationEric Paris2013-04-301-30/+4
| | | | | | | | | | | | | | We have a number of places we were reimplementing the same code to write out lsm labels. Just do it one darn place. Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: push loginuid and sessionid processing downEric Paris2013-04-301-1/+1
| | | | | | | | | | | | | | Since we are always current, we can push a lot of this stuff to the bottom and get rid of useless interfaces and arguments. Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: stop pushing loginid, uid, sessionid as argumentsEric Paris2013-04-301-63/+37
| | | | | | | | | | | | | | | | We always use current. Stop pulling this when the skb comes in and pushing it around as arguments. Just get it at the end when you need it. Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: remove the old depricated kernel interfaceEric Paris2013-04-301-23/+5
| | | | | | | | | | | | | | We used to have an inflexible mechanism to add audit rules to the kernel. It hasn't been used in a long time. Get rid of that stuff. Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: allow checking the type of audit message in the user filterEric Paris2013-04-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | When userspace sends messages to the audit system it includes a type. We want to be able to filter messages based on that type without have to do the all or nothing option currently available on the AUDIT_FILTER_TYPE filter list. Instead we should be able to use the AUDIT_FILTER_USER filter list and just use the message type as one part of the matching decision. Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: use data= not msg= for AUDIT_USER_TTY messagesEric Paris2013-04-111-1/+1
| | | | | | | | | | | | | | | | | | Userspace parsing libraries assume that msg= is only for userspace audit records, not for user tty records. Make this consistent with the other tty records. Reported-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: move kaudit thread start from auditd registration to kaudit initRichard Guy Briggs2013-04-081-10/+4
| | | | | | | | | | | | | | | | | | | | | | The kauditd_thread() task was started only after the auditd userspace daemon registers itself with kaudit. This was fine when only auditd consumed messages from the kaudit netlink unicast socket. With the addition of a multicast group to that socket it is more convenient to have the thread start on init of the kaudit kernel subsystem. Signed-off-by: Richard Guy Briggs <rbriggs@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: flatten kauditd_thread wait queue codeRichard Guy Briggs2013-04-081-13/+13
| | | | | | | | | | | | | | | | The wait queue control code in kauditd_thread() was nested deeper than necessary. The function has been flattened for better legibility. Signed-off-by: Richard Guy Briggs <rbriggs@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: refactor hold queue flushRichard Guy Briggs2013-04-081-22/+40
| | | | | | | | | | | | | | | | | | The hold queue flush code is an autonomous chunk of code that can be refactored, removed from kauditd_thread() into flush_hold_queue() and flattenned for better legibility. Signed-off-by: Richard Guy Briggs <rbriggs@redhat.com> Signed-off-by: Eric Paris <eparis@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2013-05-011-5/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: "Highlights (1721 non-merge commits, this has to be a record of some sort): 1) Add 'random' mode to team driver, from Jiri Pirko and Eric Dumazet. 2) Make it so that any driver that supports configuration of multiple MAC addresses can provide the forwarding database add and del calls by providing a default implementation and hooking that up if the driver doesn't have an explicit set of handlers. From Vlad Yasevich. 3) Support GSO segmentation over tunnels and other encapsulating devices such as VXLAN, from Pravin B Shelar. 4) Support L2 GRE tunnels in the flow dissector, from Michael Dalton. 5) Implement Tail Loss Probe (TLP) detection in TCP, from Nandita Dukkipati. 6) In the PHY layer, allow supporting wake-on-lan in situations where the PHY registers have to be written for it to be configured. Use it to support wake-on-lan in mv643xx_eth. From Michael Stapelberg. 7) Significantly improve firewire IPV6 support, from YOSHIFUJI Hideaki. 8) Allow multiple packets to be sent in a single transmission using network coding in batman-adv, from Martin Hundebøll. 9) Add support for T5 cxgb4 chips, from Santosh Rastapur. 10) Generalize the VXLAN forwarding tables so that there is more flexibility in configurating various aspects of the endpoints. From David Stevens. 11) Support RSS and TSO in hardware over GRE tunnels in bxn2x driver, from Dmitry Kravkov. 12) Zero copy support in nfnelink_queue, from Eric Dumazet and Pablo Neira Ayuso. 13) Start adding networking selftests. 14) In situations of overload on the same AF_PACKET fanout socket, or per-cpu packet receive queue, minimize drop by distributing the load to other cpus/fanouts. From Willem de Bruijn and Eric Dumazet. 15) Add support for new payload offset BPF instruction, from Daniel Borkmann. 16) Convert several drivers over to mdoule_platform_driver(), from Sachin Kamat. 17) Provide a minimal BPF JIT image disassembler userspace tool, from Daniel Borkmann. 18) Rewrite F-RTO implementation in TCP to match the final specification of it in RFC4138 and RFC5682. From Yuchung Cheng. 19) Provide netlink socket diag of netlink sockets ("Yo dawg, I hear you like netlink, so I implemented netlink dumping of netlink sockets.") From Andrey Vagin. 20) Remove ugly passing of rtnetlink attributes into rtnl_doit functions, from Thomas Graf. 21) Allow userspace to be able to see if a configuration change occurs in the middle of an address or device list dump, from Nicolas Dichtel. 22) Support RFC3168 ECN protection for ipv6 fragments, from Hannes Frederic Sowa. 23) Increase accuracy of packet length used by packet scheduler, from Jason Wang. 24) Beginning set of changes to make ipv4/ipv6 fragment handling more scalable and less susceptible to overload and locking contention, from Jesper Dangaard Brouer. 25) Get rid of using non-type-safe NLMSG_* macros and use nlmsg_*() instead. From Hong Zhiguo. 26) Optimize route usage in IPVS by avoiding reference counting where possible, from Julian Anastasov. 27) Convert IPVS schedulers to RCU, also from Julian Anastasov. 28) Support cpu fanouts in xt_NFQUEUE netfilter target, from Holger Eitzenberger. 29) Network namespace support for nf_log, ebt_log, xt_LOG, ipt_ULOG, nfnetlink_log, and nfnetlink_queue. From Gao feng. 30) Implement RFC3168 ECN protection, from Hannes Frederic Sowa. 31) Support several new r8169 chips, from Hayes Wang. 32) Support tokenized interface identifiers in ipv6, from Daniel Borkmann. 33) Use usbnet_link_change() helper in USB net driver, from Ming Lei. 34) Add 802.1ad vlan offload support, from Patrick McHardy. 35) Support mmap() based netlink communication, also from Patrick McHardy. 36) Support HW timestamping in mlx4 driver, from Amir Vadai. 37) Rationalize AF_PACKET packet timestamping when transmitting, from Willem de Bruijn and Daniel Borkmann. 38) Bring parity to what's provided by /proc/net/packet socket dumping and the info provided by netlink socket dumping of AF_PACKET sockets. From Nicolas Dichtel. 39) Fix peeking beyond zero sized SKBs in AF_UNIX, from Benjamin Poirier" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits) filter: fix va_list build error af_unix: fix a fatal race with bit fields bnx2x: Prevent memory leak when cnic is absent bnx2x: correct reading of speed capabilities net: sctp: attribute printl with __printf for gcc fmt checks netlink: kconfig: move mmap i/o into netlink kconfig netpoll: convert mutex into a semaphore netlink: Fix skb ref counting. net_sched: act_ipt forward compat with xtables mlx4_en: fix a build error on 32bit arches Revert "bnx2x: allow nvram test to run when device is down" bridge: avoid OOPS if root port not found drivers: net: cpsw: fix kernel warn on cpsw irq enable sh_eth: use random MAC address if no valid one supplied 3c509.c: call SET_NETDEV_DEV for all device types (ISA/ISAPnP/EISA) tg3: fix to append hardware time stamping flags unix/stream: fix peeking with an offset larger than data in queue unix/dgram: fix peeking with an offset larger than data in queue unix/dgram: peek beyond 0-sized skbs openvswitch: Remove unneeded ovs_netdev_get_ifindex() ...
| * | audit: pass int* to nlmsg_nextAlexandru Copot2013-03-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 941912133025926307c7a65b203fa38403b1063a replaced the macros NLMSG_NEXT with calls to nlmsg_next which produces this warning: kernel/audit.c: In function ‘audit_receive_skb’: kernel/audit.c:928:3: warning: passing argument 2 of ‘nlmsg_next’ makes pointer from integer without a cast In file included from include/net/rtnetlink.h:5:0, from include/net/neighbour.h:28, from include/net/dst.h:17, from include/net/sock.h:68, from kernel/audit.c:55: include/net/netlink.h:359:1: note: expected ‘int *’ but argument is of type ‘int’ Fix this by sending the intended pointer. Signed-off-by: Alexandru Copot <alex.mihai.c@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | audit: replace obsolete NLMSG_* with type safe nlmsg_*Hong zhi guo2013-03-281-5/+5
| |/ | | | | | | | | | | Signed-off-by: Hong Zhiguo <honkiko@gmail.com> Acked-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* / audit: don't check if kauditd is valid every timeGao feng2013-04-291-6/+6
|/ | | | | | | | | | | | | | We only need to check if kauditd is valid after we start it, if kauditd is invalid, we will set kauditd_task to NULL. So next time, we will start kauditd again. It means if kauditd_task is not NULL,it must be valid. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Cc: Eric Paris <eparis@redhat.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>
* kernel/audit.c: avoid negative sleep durationsAndrew Morton2013-01-111-13/+23
| | | | | | | | | | | | | | | | | | | | | | | | audit_log_start() performs the same jiffies comparison in two places. If sufficient time has elapsed between the two comparisons, the second one produces a negative sleep duration: schedule_timeout: wrong timeout value fffffffffffffff0 Pid: 6606, comm: trinity-child1 Not tainted 3.8.0-rc1+ #43 Call Trace: schedule_timeout+0x305/0x340 audit_log_start+0x311/0x470 audit_log_exit+0x4b/0xfb0 __audit_syscall_exit+0x25f/0x2c0 sysret_audit+0x17/0x21 Fix it by performing the comparison a single time. Reported-by: Dave Jones <davej@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* audit: catch possible NULL audit buffersKees Cook2013-01-111-0/+4
| | | | | | | | | | | | | | | | | It's possible for audit_log_start() to return NULL. Handle it in the various callers. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Julien Tinnes <jln@google.com> Cc: Will Drewry <wad@google.com> Cc: Steve Grubb <sgrubb@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs: handle failed audit_log_start properlySasha Levin2012-10-091-0/+2
| | | | | | | | | | audit_log_start() may return NULL, this is unchecked by the caller in audit_log_link_denied() and could cause a NULL ptr deref. Introduced by commit a51d9eaa ("fs: add link restriction audit reporting"). Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2012-10-021-13/+12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking changes from David Miller: 1) GRE now works over ipv6, from Dmitry Kozlov. 2) Make SCTP more network namespace aware, from Eric Biederman. 3) TEAM driver now works with non-ethernet devices, from Jiri Pirko. 4) Make openvswitch network namespace aware, from Pravin B Shelar. 5) IPV6 NAT implementation, from Patrick McHardy. 6) Server side support for TCP Fast Open, from Jerry Chu and others. 7) Packet BPF filter supports MOD and XOR, from Eric Dumazet and Daniel Borkmann. 8) Increate the loopback default MTU to 64K, from Eric Dumazet. 9) Use a per-task rather than per-socket page fragment allocator for outgoing networking traffic. This benefits processes that have very many mostly idle sockets, which is quite common. From Eric Dumazet. 10) Use up to 32K for page fragment allocations, with fallbacks to smaller sizes when higher order page allocations fail. Benefits are a) less segments for driver to process b) less calls to page allocator c) less waste of space. From Eric Dumazet. 11) Allow GRO to be used on GRE tunnels, from Eric Dumazet. 12) VXLAN device driver, one way to handle VLAN issues such as the limitation of 4096 VLAN IDs yet still have some level of isolation. From Stephen Hemminger. 13) As usual there is a large boatload of driver changes, with the scale perhaps tilted towards the wireless side this time around. Fix up various fairly trivial conflicts, mostly caused by the user namespace changes. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1012 commits) hyperv: Add buffer for extended info after the RNDIS response message. hyperv: Report actual status in receive completion packet hyperv: Remove extra allocated space for recv_pkt_list elements hyperv: Fix page buffer handling in rndis_filter_send_request() hyperv: Fix the missing return value in rndis_filter_set_packet_filter() hyperv: Fix the max_xfer_size in RNDIS initialization vxlan: put UDP socket in correct namespace vxlan: Depend on CONFIG_INET sfc: Fix the reported priorities of different filter types sfc: Remove EFX_FILTER_FLAG_RX_OVERRIDE_IP sfc: Fix loopback self-test with separate_tx_channels=1 sfc: Fix MCDI structure field lookup sfc: Add parentheses around use of bitfield macro arguments sfc: Fix null function pointer in efx_sriov_channel_type vxlan: virtual extensible lan igmp: export symbol ip_mc_leave_group netlink: add attributes to fdb interface tg3: unconditionally select HWMON support when tg3 is enabled. Revert "net: ti cpsw ethernet: allow reading phy interface mode from DT" gre: fix sparse warning ...
| * netlink: Rename pid to portid to avoid confusionEric W. Biederman2012-09-101-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is a frequent mistake to confuse the netlink port identifier with a process identifier. Try to reduce this confusion by renaming fields that hold port identifiers portid instead of pid. I have carefully avoided changing the structures exported to userspace to avoid changing the userspace API. I have successfully built an allyesconfig kernel with this change. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * netlink: hide struct module parameter in netlink_kernel_createPablo Neira Ayuso2012-09-081-2/+1
| | | | | | | | | | | | | | | | | | | | | | This patch defines netlink_kernel_create as a wrapper function of __netlink_kernel_create to hide the struct module *me parameter (which seems to be THIS_MODULE in all existing netlink subsystems). Suggested by David S. Miller. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | userns: Convert audit to work with user namespaces enabledEric W. Biederman2012-09-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Explicitly format uids gids in audit messges in the initial user namespace. This is safe because auditd is restrected to be in the initial user namespace. - Convert audit_sig_uid into a kuid_t. - Enable building the audit code and user namespaces at the same time. The net result is that the audit subsystem now uses kuid_t and kgid_t whenever possible making it almost impossible to confuse a raw uid_t with a kuid_t preventing bugs. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
* | userns: Convert the audit loginuid to be a kuidEric W. Biederman2012-09-171-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Always store audit loginuids in type kuid_t. Print loginuids by converting them into uids in the appropriate user namespace, and then printing the resulting uid. Modify audit_get_loginuid to return a kuid_t. Modify audit_set_loginuid to take a kuid_t. Modify /proc/<pid>/loginuid on read to convert the loginuid into the user namespace of the opener of the file. Modify /proc/<pid>/loginud on write to convert the loginuid rom the user namespace of the opener of the file. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Paul Moore <paul@paul-moore.com> ? Cc: David Miller <davem@davemloft.net> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
* | audit: Don't pass pid or uid to audit_log_common_recv_msgEric W. Biederman2012-09-171-15/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The only place we use the uid and the pid that we calculate in audit_receive_msg is in audit_log_common_recv_msg so move the calculation of these values into the audit_log_common_recv_msg. Simplify the calcuation of the current pid and uid by reading them from current instead of reading them from NETLINK_CREDS. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | audit: Remove the unused uid parameter from audit_receive_filterEric W. Biederman2012-09-171-2/+2
| | | | | | | | | | | | Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | audit: Properly set the origin port id of audit messages.Eric W. Biederman2012-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | For user generated audit messages set the portid field in the netlink header to the netlink port where the user generated audit message came from. Reporting the process id in a port id field was just nonsense. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | audit: Simply AUDIT_TTY_SET and AUDIT_TTY_GETEric W. Biederman2012-09-171-25/+13
| | | | | | | | | | | | | | | | | | | | Use current instead of looking up the current up the current task by process identifier. Netlink requests are processed in trhe context of the sending task so this is safe. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | audit: kill audit_prepare_user_ttyEric W. Biederman2012-09-171-19/+1
| | | | | | | | | | | | | | | | | | | | | | Now that netlink messages are processed in the context of the sender tty_audit_push_task can be called directly and audit_prepare_user_tty which only added looking up the task of the tty by process id is not needed. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | audit: Use current instead of NETLINK_CREDS() in audit_filterEric W. Biederman2012-09-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Get caller process uid and gid and pid values from the current task instead of the NETLINK_CB. This is simpler than passing NETLINK_CREDS from from audit_receive_msg to audit_filter_user_rules and avoid the chance of being hit by the occassional bugs in netlink uid/gid credential passing. This is a safe changes because all netlink requests are processed in the task of the sending process. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* | audit: Limit audit requests to processes in the initial pid and user namespaces.Eric W. Biederman2012-09-171-0/+6
|/ | | | | | | | | | | | | This allows the code to safely make the assumption that all of the uids gids and pids that need to be send in audit messages are in the initial namespaces. If someone cares we may lift this restriction someday but start with limiting access so at least the code is always correct. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-08-011-0/+21
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull second vfs pile from Al Viro: "The stuff in there: fsfreeze deadlock fixes by Jan (essentially, the deadlock reproduced by xfstests 068), symlink and hardlink restriction patches, plus assorted cleanups and fixes. Note that another fsfreeze deadlock (emergency thaw one) is *not* dealt with - the series by Fernando conflicts a lot with Jan's, breaks userland ABI (FIFREEZE semantics gets changed) and trades the deadlock for massive vfsmount leak; this is going to be handled next cycle. There probably will be another pull request, but that stuff won't be in it." Fix up trivial conflicts due to unrelated changes next to each other in drivers/{staging/gdm72xx/usb_boot.c, usb/gadget/storage_common.c} * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits) delousing target_core_file a bit Documentation: Correct s_umount state for freeze_fs/unfreeze_fs fs: Remove old freezing mechanism ext2: Implement freezing btrfs: Convert to new freezing mechanism nilfs2: Convert to new freezing mechanism ntfs: Convert to new freezing mechanism fuse: Convert to new freezing mechanism gfs2: Convert to new freezing mechanism ocfs2: Convert to new freezing mechanism xfs: Convert to new freezing code ext4: Convert to new freezing mechanism fs: Protect write paths by sb_start_write - sb_end_write fs: Skip atime update on frozen filesystem fs: Add freezing handling to mnt_want_write() / mnt_drop_write() fs: Improve filesystem freezing handling switch the protection of percpu_counter list to spinlock nfsd: Push mnt_want_write() outside of i_mutex btrfs: Push mnt_want_write() outside of i_mutex fat: Push mnt_want_write() outside of i_mutex ...
| * fs: add link restriction audit reportingKees Cook2012-07-291-0/+21
| | | | | | | | | | | | | | | | | | Adds audit messages for unexpected link restriction violations so that system owners will have some sort of potentially actionable information about misbehaving processes. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | netlink: add netlink_kernel_cfg parameter to netlink_kernel_createPablo Neira Ayuso2012-06-291-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the following structure: struct netlink_kernel_cfg { unsigned int groups; void (*input)(struct sk_buff *skb); struct mutex *cb_mutex; }; That can be passed to netlink_kernel_create to set optional configurations for netlink kernel sockets. I've populated this structure by looking for NULL and zero parameters at the existing code. The remaining parameters that always need to be set are still left in the original interface. That includes optional parameters for the netlink socket creation. This allows easy extensibility of this interface in the future. This patch also adapts all callers to use this new interface. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | audit: netlink: Move away from NLMSG_NEW().David S. Miller2012-06-261-10/+13
|/ | | | | | And use nlmsg_data() while we're here too. Signed-off-by: David S. Miller <davem@davemloft.net>
* constify path argument of audit_log_d_path()Al Viro2012-03-201-1/+1
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'for-linus' of ↵Linus Torvalds2012-01-171-2/+2
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit: (29 commits) audit: no leading space in audit_log_d_path prefix audit: treat s_id as an untrusted string audit: fix signedness bug in audit_log_execve_info() audit: comparison on interprocess fields audit: implement all object interfield comparisons audit: allow interfield comparison between gid and ogid audit: complex interfield comparison helper audit: allow interfield comparison in audit rules Kernel: Audit Support For The ARM Platform audit: do not call audit_getname on error audit: only allow tasks to set their loginuid if it is -1 audit: remove task argument to audit_set_loginuid audit: allow audit matching on inode gid audit: allow matching on obj_uid audit: remove audit_finish_fork as it can't be called audit: reject entry,always rules audit: inline audit_free to simplify the look of generic code audit: drop audit_set_macxattr as it doesn't do anything audit: inline checks for not needing to collect aux records audit: drop some potentially inadvisable likely notations ... Use evil merge to fix up grammar mistakes in Kconfig file. Bad speling and horrible grammar (and copious swearing) is to be expected, but let's keep it to commit messages and comments, rather than expose it to users in config help texts or printouts.
| * audit: no leading space in audit_log_d_path prefixKees Cook2012-01-171-1/+1
| | | | | | | | | | | | | | | | | | audit_log_d_path() injects an additional space before the prefix, which serves no purpose and doesn't mix well with other audit_log*() functions that do not sneak extra characters into the log. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Eric Paris <eparis@redhat.com>
| * audit: drop the meaningless and format breaking word 'user'Eric Paris2012-01-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | userspace audit messages look like so: type=USER msg=audit(1271170549.415:24710): user pid=14722 uid=0 auid=500 ses=1 subj=unconfined_u:unconfined_r:auditctl_t:s0-s0:c0.c1023 msg='' That third field just says 'user'. That's useless and doesn't follow the key=value pair we are trying to enforce. We already know it came from the user based on the record type. Kill that word. Die. Signed-off-by: Eric Paris <eparis@redhat.com>
* | Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-securityLinus Torvalds2012-01-141-2/+2
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://selinuxproject.org/~jmorris/linux-security: capabilities: remove __cap_full_set definition security: remove the security_netlink_recv hook as it is equivalent to capable() ptrace: do not audit capability check when outputing /proc/pid/stat capabilities: remove task_ns_* functions capabitlies: ns_capable can use the cap helpers rather than lsm call capabilities: style only - move capable below ns_capable capabilites: introduce new has_ns_capabilities_noaudit capabilities: call has_ns_capability from has_capability capabilities: remove all _real_ interfaces capabilities: introduce security_capable_noaudit capabilities: reverse arguments to security_capable capabilities: remove the task from capable LSM hook entirely selinux: sparse fix: fix several warnings in the security server cod selinux: sparse fix: fix warnings in netlink code selinux: sparse fix: eliminate warnings for selinuxfs selinux: sparse fix: declare selinux_disable() in security.h selinux: sparse fix: move selinux_complete_init selinux: sparse fix: make selinux_secmark_refcount static SELinux: Fix RCU deref check warning in sel_netport_insert() Manually fix up a semantic mis-merge wrt security_netlink_recv(): - the interface was removed in commit fd7784615248 ("security: remove the security_netlink_recv hook as it is equivalent to capable()") - a new user of it appeared in commit a38f7907b926 ("crypto: Add userspace configuration API") causing no automatic merge conflict, but Eric Paris pointed out the issue.
| * security: remove the security_netlink_recv hook as it is equivalent to capable()Eric Paris2012-01-051-2/+2
| | | | | | | | | | | | | | | | | | | | Once upon a time netlink was not sync and we had to get the effective capabilities from the skb that was being received. Today we instead get the capabilities from the current task. This has rendered the entire purpose of the hook moot as it is now functionally equivalent to the capable() call. Signed-off-by: Eric Paris <eparis@redhat.com>
* | audit: always follow va_copy() with va_end()Jesper Juhl2012-01-081-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | A call to va_copy() should always be followed by a call to va_end() in the same function. In kernel/autit.c::audit_log_vformat() this is not always done. This patch makes sure va_end() is always called. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | kernel: Map most files to use export.h instead of module.hPaul Gortmaker2011-10-311-1/+1
|/ | | | | | | | | | | | | | | | The changed files were only including linux/module.h for the EXPORT_SYMBOL infrastructure, and nothing else. Revector them onto the isolated export header for faster compile times. Nothing to see here but a whole lot of instances of: -#include <linux/module.h> +#include <linux/export.h> This commit is only changing the kernel dir; next targets will probably be mm, fs, the arch dirs, etc. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
* atomic: use <linux/atomic.h>Arun Sharma2011-07-261-1/+1
| | | | | | | | | | | | | | This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> 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>
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