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2013-07-03Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-securityLinus Torvalds31-583/+949
Pull security subsystem updates from James Morris: "In this update, Smack learns to love IPv6 and to mount a filesystem with a transmutable hierarchy (i.e. security labels are inherited from parent directory upon creation rather than creating process). The rest of the changes are maintenance" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (37 commits) tpm/tpm_i2c_infineon: Remove unused header file tpm: tpm_i2c_infinion: Don't modify i2c_client->driver evm: audit integrity metadata failures integrity: move integrity_audit_msg() evm: calculate HMAC after initializing posix acl on tmpfs maintainers: add Dmitry Kasatkin Smack: Fix the bug smackcipso can't set CIPSO correctly Smack: Fix possible NULL pointer dereference at smk_netlbl_mls() Smack: Add smkfstransmute mount option Smack: Improve access check performance Smack: Local IPv6 port based controls tpm: fix regression caused by section type conflict of tpm_dev_release() in ppc builds maintainers: Remove Kent from maintainers tpm: move TPM_DIGEST_SIZE defintion tpm_tis: missing platform_driver_unregister() on error in init_tis() security: clarify cap_inode_getsecctx description apparmor: no need to delay vfree() apparmor: fix fully qualified name parsing apparmor: fix setprocattr arg processing for onexec apparmor: localize getting the security context to a few macros ...
2013-07-03Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds2-7/+19
Pull second set of VFS changes from Al Viro: "Assorted f_pos race fixes, making do_splice_direct() safe to call with i_mutex on parent, O_TMPFILE support, Jeff's locks.c series, ->d_hash/->d_compare calling conventions changes from Linus, misc stuff all over the place." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (63 commits) Document ->tmpfile() ext4: ->tmpfile() support vfs: export lseek_execute() to modules lseek_execute() doesn't need an inode passed to it block_dev: switch to fixed_size_llseek() cpqphp_sysfs: switch to fixed_size_llseek() tile-srom: switch to fixed_size_llseek() proc_powerpc: switch to fixed_size_llseek() ubi/cdev: switch to fixed_size_llseek() pci/proc: switch to fixed_size_llseek() isapnp: switch to fixed_size_llseek() lpfc: switch to fixed_size_llseek() locks: give the blocked_hash its own spinlock locks: add a new "lm_owner_key" lock operation locks: turn the blocked_list into a hashtable locks: convert fl_link to a hlist_node locks: avoid taking global lock if possible when waking up blocked waiters locks: protect most of the file_lock handling with i_lock locks: encapsulate the fl_link list handling locks: make "added" in __posix_lock_file a bool ...
2013-07-02Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds1-38/+18
Pull cgroup changes from Tejun Heo: "This pull request contains the following changes. - cgroup_subsys_state (css) reference counting has been converted to percpu-ref. css is what each resource controller embeds into its own control structure and perform reference count against. It may be used in hot paths of various subsystems and is similar to module refcnt in that aspect. For example, block-cgroup's css refcnting was showing up a lot in Mikulaus's device-mapper scalability work and this should alleviate it. - cgroup subtree iterator has been updated so that RCU read lock can be released after grabbing reference. This allows simplifying its users which requires blocking which used to build iteration list under RCU read lock and then traverse it outside. This pull request contains simplification of cgroup core and device-cgroup. A separate pull request will update cpuset. - Fixes for various bugs including corner race conditions and RCU usage bugs. - A lot of cleanups and some prepartory work for the planned unified hierarchy support." * 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (48 commits) cgroup: CGRP_ROOT_SUBSYS_BOUND should also be ignored when mounting an existing hierarchy cgroup: CGRP_ROOT_SUBSYS_BOUND should be ignored when comparing mount options cgroup: fix deadlock on cgroup_mutex via drop_parsed_module_refcounts() cgroup: always use RCU accessors for protected accesses cgroup: fix RCU accesses around task->cgroups cgroup: fix RCU accesses to task->cgroups cgroup: grab cgroup_mutex in drop_parsed_module_refcounts() cgroup: fix cgroupfs_root early destruction path cgroup: reserve ID 0 for dummy_root and 1 for unified hierarchy cgroup: implement for_each_[builtin_]subsys() cgroup: move init_css_set initialization inside cgroup_mutex cgroup: s/for_each_subsys()/for_each_root_subsys()/ cgroup: clean up find_css_set() and friends cgroup: remove cgroup->actual_subsys_mask cgroup: prefix global variables with "cgroup_" cgroup: convert CFTYPE_* flags to enums cgroup: rename cont to cgrp cgroup: clean up cgroup_serial_nr_cursor cgroup: convert cgroup_cft_commit() to use cgroup_for_each_descendant_pre() cgroup: make serial_nr_cursor available throughout cgroup.c ...
2013-06-29SELinux: Institute file_path_has_perm()David Howells1-6/+18
Create a file_path_has_perm() function that is like path_has_perm() but instead takes a file struct that is the source of both the path and the inode (rather than getting the inode from the dentry in the path). This is then used where appropriate. This will be useful for situations like unionmount where it will be possible to have an apparently-negative dentry (eg. a fallthrough) that is open with the file struct pointing to an inode on the lower fs. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-29Replace a bunch of file->dentry->d_inode refs with file_inode()David Howells1-1/+1
Replace a bunch of file->dentry->d_inode refs with file_inode(). In __fput(), use file->f_inode instead so as not to be affected by any tricks that file_inode() might grow. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-06-20evm: audit integrity metadata failuresMimi Zohar1-1/+14
Before modifying an EVM protected extended attribute or any other metadata included in the HMAC calculation, the existing 'security.evm' is verified. This patch adds calls to integrity_audit_msg() to audit integrity metadata failures. Reported-by: Sven Vermeulen <sven.vermeulen@siphos.be> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-06-20integrity: move integrity_audit_msg()Mimi Zohar7-33/+36
This patch moves the integrity_audit_msg() function and defintion to security/integrity/, the parent directory, renames the 'ima_audit' boot command line option to 'integrity_audit', and fixes the Kconfig help text to reflect the actual code. Changelog: - Fixed ifdef inclusion of integrity_audit_msg() (Fengguang Wu) Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
2013-06-03Smack: Fix the bug smackcipso can't set CIPSO correctlyPassion,Zhao1-1/+1
Bug report: https://tizendev.org/bugs/browse/TDIS-3891 The reason is userspace libsmack only use "smackfs/cipso2" long-label interface, but the code's logical is still for orginal fixed length label. Now update smack_cipso_apply() to support flexible label (<=256 including tailing '\0') There is also a bug in kernel/security/smack/smackfs.c: When smk_set_cipso() parsing the CIPSO setting from userspace, the offset of CIPSO level should be "strlen(label)+1" instead of "strlen(label)" Signed-off-by: Passion,Zhao <passion.zhao@intel.com>
2013-05-31selinux: fix the labeled xfrm/IPsec reference count handlingPaul Moore1-20/+14
The SELinux labeled IPsec code was improperly handling its reference counting, dropping a reference on a delete operation instead of on a free/release operation. Reported-by: Ondrej Moris <omoris@redhat.com> Signed-off-by: Paul Moore <pmoore@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-05-28Smack: Fix possible NULL pointer dereference at smk_netlbl_mls()Tetsuo Handa1-0/+2
netlbl_secattr_catmap_alloc(GFP_ATOMIC) can return NULL. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
2013-05-28Smack: Add smkfstransmute mount optionCasey Schaufler2-5/+21
Suppliment the smkfsroot mount option with another, smkfstransmute, that does the same thing but also marks the root inode as transmutting. This allows a freshly created filesystem to be mounted with a transmutting heirarchy. Targeted for git://git.gitorious.org/smack-next/kernel.git Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
2013-05-28Smack: Improve access check performanceCasey Schaufler4-249/+282
Each Smack label that the kernel has seen is added to a list of labels. The list of access rules for a given subject label hangs off of the label list entry for the label. This patch changes the structures that contain subject labels to point at the label list entry rather that the label itself. Doing so removes a label list lookup in smk_access() that was accounting for the largest single chunk of Smack overhead. Targeted for git://git.gitorious.org/smack-next/kernel.git Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
2013-05-28Smack: Local IPv6 port based controlsCasey Schaufler2-40/+319
Smack does not provide access controls on IPv6 communications. This patch introduces a mechanism for maintaining Smack lables for local IPv6 communications. It is based on labeling local ports. The behavior should be compatible with any future "real" IPv6 support as it provides no interfaces for users to manipulate the labeling. Remote IPv6 connections use the ambient label the same way that unlabeled IPv4 packets are treated. Targeted for git://git.gitorious.org/smack-next/kernel.git Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
2013-05-24device_cgroup: simplify cgroup tree walk in propagate_exception()Tejun Heo1-38/+18
During a config change, propagate_exception() needs to traverse the subtree to update config on the subtree. Because such config updates need to allocate memory, it couldn't directly use cgroup_for_each_descendant_pre() which required the whole iteration to be contained in a single RCU read critical section. To work around the limitation, propagate_exception() built a linked list of descendant cgroups while read-locking RCU and then walked the list afterwards, which is safe as the whole iteration is protected by devcgroup_mutex. This works but is cumbersome. With the recent updates, cgroup iterators now allow dropping RCU read lock while iteration is in progress making this workaround no longer necessary. This patch replaces dev_cgroup->propagate_pending list and get_online_devcg() with direct cgroup_for_each_descendant_pre() walk. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Aristeu Rozanski <aris@redhat.com> Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com> Reviewed-by: Michal Hocko <mhocko@suse.cz>
2013-05-12apparmor: no need to delay vfree()Al Viro1-21/+3
vfree() can be called from interrupt contexts now Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2013-05-12Merge tag 'aa-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor into ra-nextJames Morris19-248/+286
2013-05-07aio: don't include aio.h in sched.hKent Overstreet2-0/+3
Faster kernel compiles by way of fewer unnecessary includes. [akpm@linux-foundation.org: fix fallout] [akpm@linux-foundation.org: fix build] Signed-off-by: Kent Overstreet <koverstreet@google.com> Cc: Zach Brown <zab@redhat.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Jens Axboe <axboe@kernel.dk> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Benjamin LaHaise <bcrl@kvack.org> Reviewed-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-05-01Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds3-8/+4
Pull VFS updates from Al Viro, Misc cleanups all over the place, mainly wrt /proc interfaces (switch create_proc_entry to proc_create(), get rid of the deprecated create_proc_read_entry() in favor of using proc_create_data() and seq_file etc). 7kloc removed. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits) don't bother with deferred freeing of fdtables proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h proc: Make the PROC_I() and PDE() macros internal to procfs proc: Supply a function to remove a proc entry by PDE take cgroup_open() and cpuset_open() to fs/proc/base.c ppc: Clean up scanlog ppc: Clean up rtas_flash driver somewhat hostap: proc: Use remove_proc_subtree() drm: proc: Use remove_proc_subtree() drm: proc: Use minor->index to label things, not PDE->name drm: Constify drm_proc_list[] zoran: Don't print proc_dir_entry data in debug reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show() proc: Supply an accessor for getting the data from a PDE's parent airo: Use remove_proc_subtree() rtl8192u: Don't need to save device proc dir PDE rtl8187se: Use a dir under /proc/net/r8180/ proc: Add proc_mkdir_data() proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h} proc: Move PDE_NET() to fs/proc/proc_net.c ...
2013-05-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2-4/+3
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() ...
2013-04-30Merge branch 'akpm' (incoming from Andrew)Linus Torvalds1-3/+10
Merge third batch of fixes from Andrew Morton: "Most of the rest. I still have two large patchsets against AIO and IPC, but they're a bit stuck behind other trees and I'm about to vanish for six days. - random fixlets - inotify - more of the MM queue - show_stack() cleanups - DMI update - kthread/workqueue things - compat cleanups - epoll udpates - binfmt updates - nilfs2 - hfs - hfsplus - ptrace - kmod - coredump - kexec - rbtree - pids - pidns - pps - semaphore tweaks - some w1 patches - relay updates - core Kconfig changes - sysrq tweaks" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits) Documentation/sysrq: fix inconstistent help message of sysrq key ethernet/emac/sysrq: fix inconstistent help message of sysrq key sparc/sysrq: fix inconstistent help message of sysrq key powerpc/xmon/sysrq: fix inconstistent help message of sysrq key ARM/etm/sysrq: fix inconstistent help message of sysrq key power/sysrq: fix inconstistent help message of sysrq key kgdb/sysrq: fix inconstistent help message of sysrq key lib/decompress.c: fix initconst notifier-error-inject: fix module names in Kconfig kernel/sys.c: make prctl(PR_SET_MM) generally available UAPI: remove empty Kbuild files menuconfig: print more info for symbol without prompts init/Kconfig: re-order CONFIG_EXPERT options to fix menuconfig display kconfig menu: move Virtualization drivers near other virtualization options Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS relay: use macro PAGE_ALIGN instead of FIX_SIZE kernel/relay.c: move FIX_SIZE macro into relay.c kernel/relay.c: remove unused function argument actor drivers/w1/slaves/w1_ds2760.c: fix the error handling in w1_ds2760_add_slave() drivers/w1/slaves/w1_ds2781.c: fix the error handling in w1_ds2781_add_slave() ...
2013-04-30KEYS: split call to call_usermodehelper_fns()Lucas De Marchi1-3/+10
Use call_usermodehelper_setup() + call_usermodehelper_exec() instead of calling call_usermodehelper_fns(). In case there's an OOM in this last function the cleanup function may not be called - in this case we would miss a call to key_put(). Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi> Cc: Oleg Nesterov <oleg@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: James Morris <james.l.morris@oracle.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Tejun Heo <tj@kernel.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-30Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-securityLinus Torvalds9-108/+222
Pull security subsystem update from James Morris: "Just some minor updates across the subsystem" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: ima: eliminate passing d_name.name to process_measurement() TPM: Retry SaveState command in suspend path tpm/tpm_i2c_infineon: Add small comment about return value of __i2c_transfer tpm/tpm_i2c_infineon.c: Add OF attributes type and name to the of_device_id table entries tpm_i2c_stm_st33: Remove duplicate inclusion of header files tpm: Add support for new Infineon I2C TPM (SLB 9645 TT 1.2 I2C) char/tpm: Convert struct i2c_msg initialization to C99 format drivers/char/tpm/tpm_ppi: use strlcpy instead of strncpy tpm/tpm_i2c_stm_st33: formatting and white space changes Smack: include magic.h in smackfs.c selinux: make security_sb_clone_mnt_opts return an error on context mismatch seccomp: allow BPF_XOR based ALU instructions. Fix NULL pointer dereference in smack_inode_unlink() and smack_inode_rmdir() Smack: add support for modification of existing rules smack: SMACK_MAGIC to include/uapi/linux/magic.h Smack: add missing support for transmute bit in smack_str_from_perm() Smack: prevent revoke-subject from failing when unseen label is written to it tomoyo: use DEFINE_SRCU() to define tomoyo_ss tomoyo: use DEFINE_SRCU() to define tomoyo_ss
2013-04-29Merge branch 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds1-56/+211
Pull cgroup updates from Tejun Heo: - Fixes and a lot of cleanups. Locking cleanup is finally complete. cgroup_mutex is no longer exposed to individual controlelrs which used to cause nasty deadlock issues. Li fixed and cleaned up quite a bit including long standing ones like racy cgroup_path(). - device cgroup now supports proper hierarchy thanks to Aristeu. - perf_event cgroup now supports proper hierarchy. - A new mount option "__DEVEL__sane_behavior" is added. As indicated by the name, this option is to be used for development only at this point and generates a warning message when used. Unfortunately, cgroup interface currently has too many brekages and inconsistencies to implement a consistent and unified hierarchy on top. The new flag is used to collect the behavior changes which are necessary to implement consistent unified hierarchy. It's likely that this flag won't be used verbatim when it becomes ready but will be enabled implicitly along with unified hierarchy. The option currently disables some of broken behaviors in cgroup core and also .use_hierarchy switch in memcg (will be routed through -mm), which can be used to make very unusual hierarchy where nesting is partially honored. It will also be used to implement hierarchy support for blk-throttle which would be impossible otherwise without introducing a full separate set of control knobs. This is essentially versioning of interface which isn't very nice but at this point I can't see any other options which would allow keeping the interface the same while moving towards hierarchy behavior which is at least somewhat sane. The planned unified hierarchy is likely to require some level of adaptation from userland anyway, so I think it'd be best to take the chance and update the interface such that it's supportable in the long term. Maintaining the existing interface does complicate cgroup core but shouldn't put too much strain on individual controllers and I think it'd be manageable for the foreseeable future. Maybe we'll be able to drop it in a decade. Fix up conflicts (including a semantic one adding a new #include to ppc that was uncovered by header the file changes) as per Tejun. * 'for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (45 commits) cpuset: fix compile warning when CONFIG_SMP=n cpuset: fix cpu hotplug vs rebuild_sched_domains() race cpuset: use rebuild_sched_domains() in cpuset_hotplug_workfn() cgroup: restore the call to eventfd->poll() cgroup: fix use-after-free when umounting cgroupfs cgroup: fix broken file xattrs devcg: remove parent_cgroup. memcg: force use_hierarchy if sane_behavior cgroup: remove cgrp->top_cgroup cgroup: introduce sane_behavior mount option move cgroupfs_root to include/linux/cgroup.h cgroup: convert cgroupfs_root flag bits to masks and add CGRP_ prefix cgroup: make cgroup_path() not print double slashes Revert "cgroup: remove bind() method from cgroup_subsys." perf: make perf_event cgroup hierarchical cgroup: implement cgroup_is_descendant() cgroup: make sure parent won't be destroyed before its children cgroup: remove bind() method from cgroup_subsys. devcg: remove broken_hierarchy tag cgroup: remove cgroup_lock_is_held() ...
2013-04-29tomoyo_close_control: don't bother with return valueAl Viro3-8/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-04-28apparmor: fix fully qualified name parsingJohn Johansen1-2/+4
currently apparmor name parsing is only correctly handling :<NS>:<profile> but :<NS>://<profile> is also a valid form and what is exported to userspace. Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-04-28apparmor: fix setprocattr arg processing for onexecJohn Johansen1-16/+21
the exec file isn't processing its command arg. It should only set be responding to a command of exec. Also cleanup setprocattr some more while we are at it. Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-04-28apparmor: localize getting the security context to a few macrosJohn Johansen4-21/+24
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2013-04-28apparmor: fix sparse warningsJohn Johansen2-11/+11
Fix a couple of warning reported by sparse Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-04-28apparmor: Fix smatch warning in aa_remove_profilesJohn Johansen1-8/+6
smatch reports error: potential NULL dereference 'ns'. this can not actually occur because it relies on aa_split_fqname setting both ns_name and name as null but ns_name will actually always have a value in this case. so remove the unnecessary if (ns_name) conditional that is resulting in the false positive further down. Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-04-28apparmor: fix the audit type tableJohn Johansen1-1/+1
The audit type table is missing a comma so that KILLED comes out as KILLEDAUTO. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: reserve and mask off the top 8 bits of the base fieldJohn Johansen1-7/+9
The top 8 bits of the base field have never been used, in fact can't be used, by the current 'dfa16' format. However they will be used in the future as flags, so mask them off when using base as an index value. Note: the use of the top 8 bits, without masking is trapped by the verify checks that base entries are within the size bounds. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2013-04-28apparmor: move the free_profile fn ahead of aa_alloc_profileJohn Johansen1-75/+75
Move the free_profile fn ahead of aa_alloc_profile so it can be used in aa_alloc_profile without a forward declaration. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2013-04-28apparmor: remove sid from profilesJohn Johansen4-21/+11
The sid is not going to be a direct property of a profile anymore, instead it will be directly related to the label, and the profile will pickup a label back reference. For null-profiles replace the use of sid with a per namespace unique id. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2013-04-28apparmor: move perm defines into policy_unpackJohn Johansen2-2/+3
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: misc cleanup of matchJohn Johansen2-8/+14
tidying up comments, includes and defines Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2013-04-28apparmor: relax the restrictions on setting rlimitsJohn Johansen1-3/+12
Instead of limiting the setting of the processes limits to current, relax this to tasks confined by the same profile, as the apparmor controls for rlimits are at a profile level granularity. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: remove "permipc" commandJohn Johansen3-9/+0
The "permipc" command is unused and unfinished, remove it. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2013-04-28apparmor: use common fn to clear task_context for domain transitionsJohn Johansen3-16/+20
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: add kvzalloc to handle zeroing for kvmallocJohn Johansen3-8/+22
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: add utility function to get an arbitrary tasks profile.John Johansen4-32/+49
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: fix error code to failure message mapping for name lookupJohn Johansen1-1/+1
-ESTALE used to be incorrectly used to indicate a disconnected path, when name lookup failed. This was fixed in commit e1b0e444 to correctly return -EACCESS, but the error to failure message mapping was not correctly updated to reflect this change. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: refactor profile mode macrosJohn Johansen1-6/+6
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: Remove -W1 warningsJohn Johansen2-6/+0
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-By: Steve Beattie <sbeattie@ubuntu.com>
2013-04-28apparmor: fix auditing of domain transition failures due to incomplete policyJohn Johansen1-0/+2
When policy specifies a transition to a profile that is not currently loaded, it result in exec being denied. However the failure is not being audited correctly because the audit code is treating this as an allowed permission and thus not reporting it. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-By: Steve Beattie <sbeattie@ubuntu.com>
2013-04-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller3-0/+18
Conflicts: drivers/net/ethernet/emulex/benet/be_main.c drivers/net/ethernet/intel/igb/igb_main.c drivers/net/wireless/brcm80211/brcmsmac/mac80211_if.c include/net/scm.h net/batman-adv/routing.c net/ipv4/tcp_input.c The e{uid,gid} --> {uid,gid} credentials fix conflicted with the cleanup in net-next to now pass cred structs around. The be2net driver had a bug fix in 'net' that overlapped with the VLAN interface changes by Patrick McHardy in net-next. An IGB conflict existed because in 'net' the build_skb() support was reverted, and in 'net-next' there was a comment style fix within that code. Several batman-adv conflicts were resolved by making sure that all calls to batadv_is_my_mac() are changed to have a new bat_priv first argument. Eric Dumazet's TS ECR fix in TCP in 'net' conflicted with the F-RTO rewrite in 'net-next', mostly overlapping changes. Thanks to Stephen Rothwell and Antonio Quartulli for help with several of these merge resolutions. Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-18devcg: remove parent_cgroup.Rami Rosen1-2/+0
In devcgroup_css_alloc(), there is no longer need for parent_cgroup. bd2953ebbb("devcg: propagate local changes down the hierarchy") made the variable parent_cgroup redundant. This patch removes parent_cgroup from devcgroup_css_alloc(). Signed-off-by: Rami Rosen <ramirose@gmail.com> Acked-by: Aristeu Rozanski <aris@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2013-04-17ima: eliminate passing d_name.name to process_measurement()Mimi Zohar1-9/+5
Passing a pointer to the dentry name, as a parameter to process_measurement(), causes a race condition with rename() and is unnecessary, as the dentry name is already accessible via the file parameter. In the normal case, we use the full pathname as provided by brpm->filename, bprm->interp, or ima_d_path(). Only on ima_d_path() failure, do we fallback to using the d_name.name, which points either to external memory or d_iname. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2013-04-09selinux: add a skb_owned_by() hookEric Dumazet3-0/+18
Commit 90ba9b1986b5ac (tcp: tcp_make_synack() can use alloc_skb()) broke certain SELinux/NetLabel configurations by no longer correctly assigning the sock to the outgoing SYNACK packet. Cost of atomic operations on the LISTEN socket is quite big, and we would like it to happen only if really needed. This patch introduces a new security_ops->skb_owned_by() method, that is a void operation unless selinux is active. Reported-by: Miroslav Vadkerti <mvadkert@redhat.com> Diagnosed-by: Paul Moore <pmoore@redhat.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-security-module@vger.kernel.org Acked-by: James Morris <james.l.morris@oracle.com> Tested-by: Paul Moore <pmoore@redhat.com> Acked-by: Paul Moore <pmoore@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-08devcg: remove broken_hierarchy tagTejun Heo1-9/+0
bd2953ebbb ("devcg: propagate local changes down the hierarchy") implemented proper hierarchy support. Remove the broken tag. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Aristeu Rozanski <aris@redhat.com>
2013-04-03Smack: include magic.h in smackfs.cCasey Schaufler1-0/+1
As reported for linux-next: Tree for Apr 2 (smack) Add the required include for smackfs.c Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: James Morris <james.l.morris@oracle.com>