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* Merge tag 'modules-next-for-linus' of ↵Linus Torvalds2015-07-012-4/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux Pull module updates from Rusty Russell: "Main excitement here is Peter Zijlstra's lockless rbtree optimization to speed module address lookup. He found some abusers of the module lock doing that too. A little bit of parameter work here too; including Dan Streetman's breaking up the big param mutex so writing a parameter can load another module (yeah, really). Unfortunately that broke the usual suspects, !CONFIG_MODULES and !CONFIG_SYSFS, so those fixes were appended too" * tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (26 commits) modules: only use mod->param_lock if CONFIG_MODULES param: fix module param locks when !CONFIG_SYSFS. rcu: merge fix for Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE() module: add per-module param_lock module: make perm const params: suppress unused variable error, warn once just in case code changes. modules: clarify CONFIG_MODULE_COMPRESS help, suggest 'N'. kernel/module.c: avoid ifdefs for sig_enforce declaration kernel/workqueue.c: remove ifdefs over wq_power_efficient kernel/params.c: export param_ops_bool_enable_only kernel/params.c: generalize bool_enable_only kernel/module.c: use generic module param operaters for sig_enforce kernel/params: constify struct kernel_param_ops uses sysfs: tightened sysfs permission checks module: Rework module_addr_{min,max} module: Use __module_address() for module_address_lookup() module: Make the mod_tree stuff conditional on PERF_EVENTS || TRACING module: Optimize __module_address() using a latched RB-tree rbtree: Implement generic latch_tree seqlock: Introduce raw_read_seqcount_latch() ...
| * kernel/params: constify struct kernel_param_ops usesLuis R. Rodriguez2015-05-282-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Most code already uses consts for the struct kernel_param_ops, sweep the kernel for the last offending stragglers. Other than include/linux/moduleparam.h and kernel/params.c all other changes were generated with the following Coccinelle SmPL patch. Merge conflicts between trees can be handled with Coccinelle. In the future git could get Coccinelle merge support to deal with patch --> fail --> grammar --> Coccinelle --> new patch conflicts automatically for us on patches where the grammar is available and the patch is of high confidence. Consider this a feature request. Test compiled on x86_64 against: * allnoconfig * allmodconfig * allyesconfig @ const_found @ identifier ops; @@ const struct kernel_param_ops ops = { }; @ const_not_found depends on !const_found @ identifier ops; @@ -struct kernel_param_ops ops = { +const struct kernel_param_ops ops = { }; Generated-by: Coccinelle SmPL Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Junio C Hamano <gitster@pobox.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kees Cook <keescook@chromium.org> Cc: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: cocci@systeme.lip6.fr Cc: linux-kernel@vger.kernel.org Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/auditLinus Torvalds2015-06-271-1/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull audit updates from Paul Moore: "Four small audit patches for v4.2, all bug fixes. Only 10 lines of change this time so very unremarkable, the patch subject lines pretty much tell the whole story" * 'upstream' of git://git.infradead.org/users/pcmoore/audit: audit: Fix check of return value of strnlen_user() audit: obsolete audit_context check is removed in audit_filter_rules() audit: fix for typo in comment to function audit_log_link_denied() lsm: rename duplicate labels in LSM_AUDIT_DATA_TASK audit message type
| * | lsm: rename duplicate labels in LSM_AUDIT_DATA_TASK audit message typeRichard Guy Briggs2015-05-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The LSM_AUDIT_DATA_TASK pid= and comm= labels are duplicates of those at the start of this function with different values. Rename them to their object counterparts opid= and ocomm= to disambiguate. Signed-off-by: Richard Guy Briggs <rgb@redhat.com> [PM: minor merging needed due to differences in the tree] Signed-off-by: Paul Moore <pmoore@redhat.com>
* | | Merge branch 'next' of ↵Linus Torvalds2015-06-2728-2427/+1767
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "The main change in this kernel is Casey's generalized LSM stacking work, which removes the hard-coding of Capabilities and Yama stacking, allowing multiple arbitrary "small" LSMs to be stacked with a default monolithic module (e.g. SELinux, Smack, AppArmor). See https://lwn.net/Articles/636056/ This will allow smaller, simpler LSMs to be incorporated into the mainline kernel and arbitrarily stacked by users. Also, this is a useful cleanup of the LSM code in its own right" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (38 commits) tpm, tpm_crb: fix le64_to_cpu conversions in crb_acpi_add() vTPM: set virtual device before passing to ibmvtpm_reset_crq tpm_ibmvtpm: remove unneccessary message level. ima: update builtin policies ima: extend "mask" policy matching support ima: add support for new "euid" policy condition ima: fix ima_show_template_data_ascii() Smack: freeing an error pointer in smk_write_revoke_subj() selinux: fix setting of security labels on NFS selinux: Remove unused permission definitions selinux: enable genfscon labeling for sysfs and pstore files selinux: enable per-file labeling for debugfs files. selinux: update netlink socket classes signals: don't abuse __flush_signals() in selinux_bprm_committed_creds() selinux: Print 'sclass' as string when unrecognized netlink message occurs Smack: allow multiple labels in onlycap Smack: fix seq operations in smackfs ima: pass iint to ima_add_violation() ima: wrap event related data to the new ima_event_data structure integrity: add validity checks for 'path' parameter ...
| * | | ima: update builtin policiesMimi Zohar2015-06-161-9/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch defines a builtin measurement policy "tcb", similar to the existing "ima_tcb", but with additional rules to also measure files based on the effective uid and to measure files opened with the "read" mode bit set (eg. read, read-write). Changing the builtin "ima_tcb" policy could potentially break existing users. Instead of defining a new separate boot command line option each time the builtin measurement policy is modified, this patch defines a single generic boot command line option "ima_policy=" to specify the builtin policy and deprecates the use of the builtin ima_tcb policy. [The "ima_policy=" boot command line option is based on Roberto Sassu's "ima: added new policy type exec" patch.] Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Dr. Greg Wettstein <gw@idfusion.org> Cc: stable@vger.kernel.org
| * | | ima: extend "mask" policy matching supportMimi Zohar2015-06-161-5/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current "mask" policy option matches files opened as MAY_READ, MAY_WRITE, MAY_APPEND or MAY_EXEC. This patch extends the "mask" option to match files opened containing one of these modes. For example, "mask=^MAY_READ" would match files opened read-write. Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Dr. Greg Wettstein <gw@idfusion.org> Cc: stable@vger.kernel.org
| * | | ima: add support for new "euid" policy conditionMimi Zohar2015-06-161-4/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The new "euid" policy condition measures files with the specified effective uid (euid). In addition, for CAP_SETUID files it measures files with the specified uid or suid. Changelog: - fixed checkpatch.pl warnings - fixed avc denied {setuid} messages - based on Roberto's feedback Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Dr. Greg Wettstein <gw@idfusion.org> Cc: stable@vger.kernel.org
| * | | ima: fix ima_show_template_data_ascii()Mimi Zohar2015-06-163-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a bug introduced in "4d7aeee ima: define new template ima-ng and template fields d-ng and n-ng". Changelog: - change int to uint32 (Roberto Sassu's suggestion) Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by: Roberto Sassu <rsassu@suse.de> Cc: stable@vger.kernel.org # 3.13
| * | | Merge branch 'smack-for-4.2-stacked' of ↵James Morris2015-06-131-7/+9
| |\ \ \ | | | | | | | | | | | | | | | https://github.com/cschaufler/smack-next into next
| | * | | Smack: freeing an error pointer in smk_write_revoke_subj()Dan Carpenter2015-06-121-7/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This code used to rely on the fact that kfree(NULL) was a no-op, but then we changed smk_parse_smack() to return error pointers on failure instead of NULL. Calling kfree() on an error pointer will oops. I have re-arranged things a bit so that we only free things if they have been allocated. Fixes: e774ad683f42 ('smack: pass error code through pointers') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| * | | | selinux: fix setting of security labels on NFSJ. Bruce Fields2015-06-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before calling into the filesystem, vfs_setxattr calls security_inode_setxattr, which ends up calling selinux_inode_setxattr in our case. That returns -EOPNOTSUPP whenever SBLABEL_MNT is not set. SBLABEL_MNT was supposed to be set by sb_finish_set_opts, which sets it only if selinux_is_sblabel_mnt returns true. The selinux_is_sblabel_mnt logic was broken by eadcabc697e9 "SELinux: do all flags twiddling in one place", which didn't take into the account the SECURITY_FS_USE_NATIVE behavior that had been introduced for nfs with eb9ae686507b "SELinux: Add new labeling type native labels". This caused setxattr's of security labels over NFSv4.2 to fail. Cc: stable@kernel.org # 3.13 Cc: Eric Paris <eparis@redhat.com> Cc: David Quigley <dpquigl@davequigley.com> Reported-by: Richard Chan <rc556677@outlook.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> [PM: added the stable dependency] Signed-off-by: Paul Moore <pmoore@redhat.com>
| * | | | selinux: Remove unused permission definitionsStephen Smalley2015-06-041-14/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unused permission definitions from SELinux. Many of these were only ever used in pre-mainline versions of SELinux, prior to Linux 2.6.0. Some of them were used in the legacy network or compat_net=1 checks that were disabled by default in Linux 2.6.18 and fully removed in Linux 2.6.30. Permissions never used in mainline Linux: file swapon filesystem transition tcp_socket { connectto newconn acceptfrom } node enforce_dest unix_stream_socket { newconn acceptfrom } Legacy network checks, removed in 2.6.30: socket { recv_msg send_msg } node { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send } netif { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send } Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <pmoore@redhat.com>
| * | | | selinux: enable genfscon labeling for sysfs and pstore filesStephen Smalley2015-06-041-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support per-file labeling of sysfs and pstore files based on genfscon policy entries. This is safe because the sysfs and pstore directory tree cannot be manipulated by userspace, except to unlink pstore entries. This provides an alternative method of assigning per-file labeling to sysfs or pstore files without needing to set the labels from userspace on each boot. The advantages of this approach are that the labels are assigned as soon as the dentry is first instantiated and userspace does not need to walk the sysfs or pstore tree and set the labels on each boot. The limitations of this approach are that the labels can only be assigned based on pathname prefix matching. You can initially assign labels using this mechanism and then change them at runtime via setxattr if allowed to do so by policy. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Suggested-by: Dominick Grift <dac.override@gmail.com> Acked-by: Jeff Vander Stoep <jeffv@google.com> Signed-off-by: Paul Moore <pmoore@redhat.com>
| * | | | selinux: enable per-file labeling for debugfs files.Stephen Smalley2015-06-042-22/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for per-file labeling of debugfs files so that we can distinguish them in policy. This is particularly important in Android where certain debugfs files have to be writable by apps and therefore the debugfs directory tree can be read and searched by all. Since debugfs is entirely kernel-generated, the directory tree is immutable by userspace, and the inodes are pinned in memory, we can simply use the same approach as with proc and label the inodes from policy based on pathname from the root of the debugfs filesystem. Generalize the existing labeling support used for proc and reuse it for debugfs too. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <pmoore@redhat.com>
| * | | | selinux: update netlink socket classesStephen Smalley2015-06-042-10/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the set of SELinux netlink socket class definitions to match the set of netlink protocols implemented by the kernel. The ip_queue implementation for the NETLINK_FIREWALL and NETLINK_IP6_FW protocols was removed in d16cf20e2f2f13411eece7f7fb72c17d141c4a84, so we can remove the corresponding class definitions as this is dead code. Add new classes for NETLINK_ISCSI, NETLINK_FIB_LOOKUP, NETLINK_CONNECTOR, NETLINK_NETFILTER, NETLINK_GENERIC, NETLINK_SCSITRANSPORT, NETLINK_RDMA, and NETLINK_CRYPTO so that we can distinguish among sockets created for each of these protocols. This change does not define the finer-grained nlsmsg_read/write permissions or map specific nlmsg_type values to those permissions in the SELinux nlmsgtab; if finer-grained control of these sockets is desired/required, that can be added as a follow-on change. We do not define a SELinux class for NETLINK_ECRYPTFS as the implementation was removed in 624ae5284516870657505103ada531c64dba2a9a. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <pmoore@redhat.com>
| * | | | signals: don't abuse __flush_signals() in selinux_bprm_committed_creds()Oleg Nesterov2015-06-041-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | selinux_bprm_committed_creds()->__flush_signals() is not right, we shouldn't clear TIF_SIGPENDING unconditionally. There can be other reasons for signal_pending(): freezing(), JOBCTL_PENDING_MASK, and potentially more. Also change this code to check fatal_signal_pending() rather than SIGNAL_GROUP_EXIT, it looks a bit better. Now we can kill __flush_signals() before it finds another buggy user. Note: this code looks racy, we can flush a signal which was sent after the task SID has been updated. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Paul Moore <pmoore@redhat.com>
| * | | | selinux: Print 'sclass' as string when unrecognized netlink message occursMarek Milkovic2015-06-041-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This prints the 'sclass' field as string instead of index in unrecognized netlink message. The textual representation makes it easier to distinguish the right class. Signed-off-by: Marek Milkovic <mmilkovi@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> [PM: 80-char width fixes] Signed-off-by: Paul Moore <pmoore@redhat.com>
| * | | | Merge branch 'smack-for-4.2-stacked' of ↵James Morris2015-06-034-186/+314
| |\ \ \ \ | | |/ / / | | | | | | | | | | https://github.com/cschaufler/smack-next into next
| | * | | Smack: allow multiple labels in onlycapRafal Krypa2015-06-023-69/+160
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Smack onlycap allows limiting of CAP_MAC_ADMIN and CAP_MAC_OVERRIDE to processes running with the configured label. But having single privileged label is not enough in some real use cases. On a complex system like Tizen, there maybe few programs that need to configure Smack policy in run-time and running them all with a single label is not always practical. This patch extends onlycap feature for multiple labels. They are configured in the same smackfs "onlycap" interface, separated by spaces. Signed-off-by: Rafal Krypa <r.krypa@samsung.com>
| | * | | Smack: fix seq operations in smackfsRafal Krypa2015-06-021-30/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use proper RCU functions and read locking in smackfs seq_operations. Smack gets away with not using proper RCU functions in smackfs, because it never removes entries from these lists. But now one list will be needed (with interface in smackfs) that will have both elements added and removed to it. This change will also help any future changes implementing removal of unneeded entries from other Smack lists. The patch also fixes handling of pos argument in smk_seq_start and smk_seq_next. This fixes a bug in case when smackfs is read with a small buffer: Kernel panic - not syncing: Kernel mode fault at addr 0xfa0000011b CPU: 0 PID: 1292 Comm: dd Not tainted 4.1.0-rc1-00012-g98179b8 #13 Stack: 00000003 0000000d 7ff39e48 7f69fd00 7ff39ce0 601ae4b0 7ff39d50 600e587b 00000010 6039f690 7f69fd40 00612003 Call Trace: [<601ae4b0>] load2_seq_show+0x19/0x1d [<600e587b>] seq_read+0x168/0x331 [<600c5943>] __vfs_read+0x21/0x101 [<601a595e>] ? security_file_permission+0xf8/0x105 [<600c5ec6>] ? rw_verify_area+0x86/0xe2 [<600c5fc3>] vfs_read+0xa1/0x14c [<600c68e2>] SyS_read+0x57/0xa0 [<6001da60>] handle_syscall+0x60/0x80 [<6003087d>] userspace+0x442/0x548 [<6001aa77>] ? interrupt_end+0x0/0x80 [<6001daae>] ? copy_chunk_to_user+0x0/0x2b [<6002cb6b>] ? save_registers+0x1f/0x39 [<60032ef7>] ? arch_prctl+0xf5/0x170 [<6001a92d>] fork_handler+0x85/0x87 Signed-off-by: Rafal Krypa <r.krypa@samsung.com>
| | * | | smack: pass error code through pointersLukasz Pawelczyk2015-05-153-97/+139
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes the following functions to use ERR_PTR() and related macros to pass the appropriate error code through returned pointers: smk_parse_smack() smk_import_entry() smk_fetch() It also makes all the other functions that use them to handle the error cases properly. This ways correct error codes from places where they happened can be propagated to the user space if necessary. Doing this it fixes a bug in onlycap and unconfined files handling. Previously their content was cleared on any error from smk_import_entry/smk_parse_smack, be it EINVAL (as originally intended) or ENOMEM. Right now it only reacts on EINVAL passing other codes properly to userspace. Comments have been updated accordingly. Signed-off-by: Lukasz Pawelczyk <l.pawelczyk@samsung.com>
| | * | | Smack: ignore private inode for smack_file_receiveSeung-Woo Kim2015-05-151-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dmabuf fd can be shared between processes via unix domain socket. The file of dmabuf fd is came from anon_inode. The inode has no set and get xattr operations, so it can not be shared between processes with smack. This patch fixes just to ignore private inode including anon_inode for smack_file_receive. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
| * | | | ima: pass iint to ima_add_violation()Roberto Sassu2015-05-215-9/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the iint associated to the current inode as a new parameter of ima_add_violation(). The passed iint is always not NULL if a violation is detected. This modification will be used to determine the inode for which there is a violation. Since the 'd' and 'd-ng' template field init() functions were detecting a violation from the value of the iint pointer, they now check the new field 'violation', added to the 'ima_event_data' structure. Changelog: - v1: - modified an old comment (Roberto Sassu) Signed-off-by: Roberto Sassu <rsassu@suse.de> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | ima: wrap event related data to the new ima_event_data structureRoberto Sassu2015-05-215-79/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All event related data has been wrapped into the new 'ima_event_data' structure. The main benefit of this patch is that a new information can be made available to template fields initialization functions by simply adding a new field to the new structure instead of modifying the definition of those functions. Changelog: - v2: - f_dentry replaced with f_path.dentry (Roberto Sassu) - removed declaration of temporary variables in template field functions when possible (suggested by Dmitry Kasatkin) Signed-off-by: Roberto Sassu <rsassu@suse.de> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | integrity: add validity checks for 'path' parameterDmitry Kasatkin2015-05-213-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds validity checks for 'path' parameter and makes it const. Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | evm: fix potential race when removing xattrsDmitry Kasatkin2015-05-211-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | EVM needs to be atomically updated when removing xattrs. Otherwise concurrent EVM verification may fail in between. This patch fixes by moving i_mutex unlocking after calling EVM hook. fsnotify_xattr() is also now called while locked the same way as it is done in __vfs_setxattr_noperm. Changelog: - remove unused 'inode' variable. Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | evm: labeling pseudo filesystems exceptionMimi Zohar2015-05-211-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To prevent offline stripping of existing file xattrs and relabeling of them at runtime, EVM allows only newly created files to be labeled. As pseudo filesystems are not persistent, stripping of xattrs is not a concern. Some LSMs defer file labeling on pseudo filesystems. This patch permits the labeling of existing files on pseudo files systems. Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | ima: remove definition of IMA_X509_PATHDmitry Kasatkin2015-05-211-7/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_IMA_X509_PATH is always defined. This patch removes the IMA_X509_PATH definition and uses CONFIG_IMA_X509_PATH. Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | ima: limit file hash setting by user to fix and log modesDmitry Kasatkin2015-05-211-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | File hashes are automatically set and updated and should not be manually set. This patch limits file hash setting to fix and log modes. Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | ima: do not measure or appraise the NSFS filesystemMimi Zohar2015-05-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Include don't appraise or measure rules for the NSFS filesystem in the builtin ima_tcb and ima_appraise_tcb policies. Changelog: - Update documentation Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: stable@vger.kernel.org # 3.19
| * | | | ima: skip measurement of cgroupfs files and update documentationRoberto Sassu2015-05-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a rule in the default measurement policy to skip inodes in the cgroupfs filesystem. Measurements for this filesystem can be avoided, as all the digests collected have the same value of the digest of an empty file. Furthermore, this patch updates the documentation of IMA policies in Documentation/ABI/testing/ima_policy to make it consistent with the policies set in security/integrity/ima/ima_policy.c. Signed-off-by: Roberto Sassu <rsassu@suse.de> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | | ima: cleanup ima_init_policy() a littleDan Carpenter2015-05-131-10/+6
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | It's a bit easier to read this if we split it up into two for loops. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
| * | | LSM: Remove unused capability.cCasey Schaufler2015-05-121-1158/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The stub functions in capability.c are no longer required with the list based stacking mechanism. Remove the file. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
| * | | LSM: Switch to lists of hooksCasey Schaufler2015-05-1211-321/+570
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using a vector of security operations with explicit, special case stacking of the capability and yama hooks use lists of hooks with capability and yama hooks included as appropriate. The security_operations structure is no longer required. Instead, there is a union of the function pointers that allows all the hooks lists to use a common mechanism for list management while retaining typing. Each module supplies an array describing the hooks it provides instead of a sparsely populated security_operations structure. The description includes the element that gets put on the hook list, avoiding the issues surrounding individual element allocation. The method for registering security modules is changed to reflect the information available. The method for removing a module, currently only used by SELinux, has also changed. It should be generic now, however if there are potential race conditions based on ordering of hook removal that needs to be addressed by the calling module. The security hooks are called from the lists and the first failure is returned. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
| * | | LSM: Add security module hook list headsCasey Schaufler2015-05-125-402/+406
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a list header for each security hook. They aren't used until later in the patch series. They are grouped together in a structure so that there doesn't need to be an external address for each. Macro-ize the initialization of the security_operations for each security module in anticipation of changing out the security_operations structure. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
| * | | LSM: Introduce security hook calling MacrosCasey Schaufler2015-05-121-207/+226
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce two macros around calling the functions in the security operations vector. The marco versions here do not change any behavior. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
| * | | LSM: Split security.hCasey Schaufler2015-05-127-7/+7
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The security.h header file serves two purposes, interfaces for users of the security modules and interfaces for security modules. Users of the security modules don't need to know about what's in the security_operations structure, so pull it out into it's own header, lsm_hooks.h Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds2015-06-241-3/+0
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: 1) Add TX fast path in mac80211, from Johannes Berg. 2) Add TSO/GRO support to ibmveth, from Thomas Falcon 3) Move away from cached routes in ipv6, just like ipv4, from Martin KaFai Lau. 4) Lots of new rhashtable tests, from Thomas Graf. 5) Run ingress qdisc lockless, from Alexei Starovoitov. 6) Allow servers to fetch TCP packet headers for SYN packets of new connections, for fingerprinting. From Eric Dumazet. 7) Add mode parameter to pktgen, for testing receive. From Alexei Starovoitov. 8) Cache access optimizations via simplifications of build_skb(), from Alexander Duyck. 9) Move page frag allocator under mm/, also from Alexander. 10) Add xmit_more support to hv_netvsc, from KY Srinivasan. 11) Add a counter guard in case we try to perform endless reclassify loops in the packet scheduler. 12) Extern flow dissector to be programmable and use it in new "Flower" classifier. From Jiri Pirko. 13) AF_PACKET fanout rollover fixes, performance improvements, and new statistics. From Willem de Bruijn. 14) Add netdev driver for GENEVE tunnels, from John W Linville. 15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso. 16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet. 17) Add an ECN retry fallback for the initial TCP handshake, from Daniel Borkmann. 18) Add tail call support to BPF, from Alexei Starovoitov. 19) Add several pktgen helper scripts, from Jesper Dangaard Brouer. 20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa. 21) Favor even port numbers for allocation to connect() requests, and odd port numbers for bind(0), in an effort to help avoid ip_local_port_range exhaustion. From Eric Dumazet. 22) Add Cavium ThunderX driver, from Sunil Goutham. 23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata, from Alexei Starovoitov. 24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai. 25) Double TCP Small Queues default to 256K to accomodate situations like the XEN driver and wireless aggregation. From Wei Liu. 26) Add more entropy inputs to flow dissector, from Tom Herbert. 27) Add CDG congestion control algorithm to TCP, from Kenneth Klette Jonassen. 28) Convert ipset over to RCU locking, from Jozsef Kadlecsik. 29) Track and act upon link status of ipv4 route nexthops, from Andy Gospodarek. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits) bridge: vlan: flush the dynamically learned entries on port vlan delete bridge: multicast: add a comment to br_port_state_selection about blocking state net: inet_diag: export IPV6_V6ONLY sockopt stmmac: troubleshoot unexpected bits in des0 & des1 net: ipv4 sysctl option to ignore routes when nexthop link is down net: track link-status of ipv4 nexthops net: switchdev: ignore unsupported bridge flags net: Cavium: Fix MAC address setting in shutdown state drivers: net: xgene: fix for ACPI support without ACPI ip: report the original address of ICMP messages net/mlx5e: Prefetch skb data on RX net/mlx5e: Pop cq outside mlx5e_get_cqe net/mlx5e: Remove mlx5e_cq.sqrq back-pointer net/mlx5e: Remove extra spaces net/mlx5e: Avoid TX CQE generation if more xmit packets expected net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq() net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device ...
| * | | netfilter: Remove spurios included of netfilter.hEric W Biederman2015-06-181-3/+0
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | While testing my netfilter changes I noticed several files where recompiling unncessarily because they unncessarily included netfilter.h. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* | | security: make inode_follow_link RCU-walk awareNeilBrown2015-05-113-6/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | inode_follow_link now takes an inode and rcu flag as well as the dentry. inode is used in preference to d_backing_inode(dentry), particularly in RCU-walk mode. selinux_inode_follow_link() gets dentry_has_perm() and inode_has_perm() open-coded into it so that it can call avc_has_perm_flags() in way that is safe if LOOKUP_RCU is set. Calling avc_has_perm_flags() with rcu_read_lock() held means that when avc_has_perm_noaudit calls avc_compute_av(), the attempt to rcu_read_unlock() before calling security_compute_av() will not actually drop the RCU read-lock. However as security_compute_av() is completely in a read_lock()ed region, it should be safe with the RCU read-lock held. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | security/selinux: pass 'flags' arg to avc_audit() and avc_has_perm_flags()NeilBrown2015-05-113-4/+25
| | | | | | | | | | | | | | | | | | | | | | | | This allows MAY_NOT_BLOCK to be passed, in RCU-walk mode, through the new avc_has_perm_flags() to avc_audit() and thence the slow_avc_audit. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | | SECURITY: remove nameidata arg from inode_follow_link.NeilBrown2015-05-103-5/+4
|/ / | | | | | | | | | | | | | | | | No ->inode_follow_link() methods use the nameidata arg, and it is about to become private to namei.c. So remove from all inode_follow_link() functions. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'for-linus' of ↵Linus Torvalds2015-04-2616-117/+117
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull fourth vfs update from Al Viro: "d_inode() annotations from David Howells (sat in for-next since before the beginning of merge window) + four assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RCU pathwalk breakage when running into a symlink overmounting something fix I_DIO_WAKEUP definition direct-io: only inc/dec inode->i_dio_count for file systems fs/9p: fix readdir() VFS: assorted d_backing_inode() annotations VFS: fs/inode.c helpers: d_inode() annotations VFS: fs/cachefiles: d_backing_inode() annotations VFS: fs library helpers: d_inode() annotations VFS: assorted weird filesystems: d_inode() annotations VFS: normal filesystems (and lustre): d_inode() annotations VFS: security/: d_inode() annotations VFS: security/: d_backing_inode() annotations VFS: net/: d_inode() annotations VFS: net/unix: d_backing_inode() annotations VFS: kernel/: d_inode() annotations VFS: audit: d_backing_inode() annotations VFS: Fix up some ->d_inode accesses in the chelsio driver VFS: Cachefiles should perform fs modifications on the top layer only VFS: AF_UNIX sockets should call mknod on the top layer only
| * | VFS: security/: d_inode() annotationsDavid Howells2015-04-154-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | ... except where that code acts as a filesystem driver, rather than working with dentries given to it. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | VFS: security/: d_backing_inode() annotationsDavid Howells2015-04-1512-105/+105
| | | | | | | | | | | | | | | | | | | | | | | | most of the ->d_inode uses there refer to the same inode IO would go to, i.e. d_backing_inode() Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | Merge branch 'for-davem' into for-nextAl Viro2015-04-115-44/+12
| |\ \
* | | | tomoyo: reduce mmap_sem hold for mm->exe_fileDavidlohr Bueso2015-04-171-5/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mm->exe_file is currently serialized with mmap_sem (shared) in order to both safely (1) read the file and (2) compute the realpath by calling tomoyo_realpath_from_path, making it an absolute overkill. Good users will, on the other hand, make use of the more standard get_mm_exe_file(), requiring only holding the mmap_sem to read the value, and relying on reference [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2015-04-151-0/+1
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge second patchbomb from Andrew Morton: - the rest of MM - various misc bits - add ability to run /sbin/reboot at reboot time - printk/vsprintf changes - fiddle with seq_printf() return value * akpm: (114 commits) parisc: remove use of seq_printf return value lru_cache: remove use of seq_printf return value tracing: remove use of seq_printf return value cgroup: remove use of seq_printf return value proc: remove use of seq_printf return value s390: remove use of seq_printf return value cris fasttimer: remove use of seq_printf return value cris: remove use of seq_printf return value openrisc: remove use of seq_printf return value ARM: plat-pxa: remove use of seq_printf return value nios2: cpuinfo: remove use of seq_printf return value microblaze: mb: remove use of seq_printf return value ipc: remove use of seq_printf return value rtc: remove use of seq_printf return value power: wakeup: remove use of seq_printf return value x86: mtrr: if: remove use of seq_printf return value linux/bitmap.h: improve BITMAP_{LAST,FIRST}_WORD_MASK MAINTAINERS: CREDITS: remove Stefano Brivio from B43 .mailmap: add Ricardo Ribalda CREDITS: add Ricardo Ribalda Delgado ...
| * | | | kernel: conditionally support non-root users, groups and capabilitiesIulia Manda2015-04-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are a lot of embedded systems that run most or all of their functionality in init, running as root:root. For these systems, supporting multiple users is not necessary. This patch adds a new symbol, CONFIG_MULTIUSER, that makes support for non-root users, non-root groups, and capabilities optional. It is enabled under CONFIG_EXPERT menu. When this symbol is not defined, UID and GID are zero in any possible case and processes always have all capabilities. The following syscalls are compiled out: setuid, setregid, setgid, setreuid, setresuid, getresuid, setresgid, getresgid, setgroups, getgroups, setfsuid, setfsgid, capget, capset. Also, groups.c is compiled out completely. In kernel/capability.c, capable function was moved in order to avoid adding two ifdef blocks. This change saves about 25 KB on a defconfig build. The most minimal kernels have total text sizes in the high hundreds of kB rather than low MB. (The 25k goes down a bit with allnoconfig, but not that much. The kernel was booted in Qemu. All the common functionalities work. Adding users/groups is not possible, failing with -ENOSYS. Bloat-o-meter output: add/remove: 7/87 grow/shrink: 19/397 up/down: 1675/-26325 (-24650) [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Iulia Manda <iulia.manda21@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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