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2017-07-05Merge branch 'work.memdup_user' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull memdup_user() conversions from Al Viro: "A fairly self-contained series - hunting down open-coded memdup_user() and memdup_user_nul() instances" * 'work.memdup_user' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: bpf: don't open-code memdup_user() kimage_file_prepare_segments(): don't open-code memdup_user() ethtool: don't open-code memdup_user() do_ip_setsockopt(): don't open-code memdup_user() do_ipv6_setsockopt(): don't open-code memdup_user() irda: don't open-code memdup_user() xfrm_user_policy(): don't open-code memdup_user() ima_write_policy(): don't open-code memdup_user_nul() sel_write_validatetrans(): don't open-code memdup_user_nul()
2017-05-25sel_write_validatetrans(): don't open-code memdup_user_nul()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-05-23selinux lsm IB/core: Implement LSM notification systemDaniel Jurgens
Add a generic notificaiton mechanism in the LSM. Interested consumers can register a callback with the LSM and security modules can produce events. Because access to Infiniband QPs are enforced in the setup phase of a connection security should be enforced again if the policy changes. Register infiniband devices for policy change notification and check all QPs on that device when the notification is received. Add a call to the notification mechanism from SELinux when the AVC cache changes or setenforce is cleared. Signed-off-by: Daniel Jurgens <danielj@mellanox.com> Acked-by: James Morris <james.l.morris@oracle.com> Acked-by: Doug Ledford <dledford@redhat.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
2017-05-23selinux: log policy capability state when a policy is loadedStephen Smalley
Log the state of SELinux policy capabilities when a policy is loaded. For each policy capability known to the kernel, log the policy capability name and the value set in the policy. For policy capabilities that are set in the loaded policy but unknown to the kernel, log the policy capability index, since this is the only information presently available in the policy. Sample output with a policy created with a new capability defined that is not known to the kernel: SELinux: policy capability network_peer_controls=1 SELinux: policy capability open_perms=1 SELinux: policy capability extended_socket_class=1 SELinux: policy capability always_check_network=0 SELinux: policy capability cgroup_seclabel=0 SELinux: unknown policy capability 5 Resolves: https://github.com/SELinuxProject/selinux-kernel/issues/32 Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
2017-05-09Merge branch 'work.misc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull misc vfs updates from Al Viro: "Assorted bits and pieces from various people. No common topic in this pile, sorry" * 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs/affs: add rename exchange fs/affs: add rename2 to prepare multiple methods Make stat/lstat/fstatat pass AT_NO_AUTOMOUNT to vfs_statx() fs: don't set *REFERENCED on single use objects fs: compat: Remove warning from COMPATIBLE_IOCTL remove pointless extern of atime_need_update_rcu() fs: completely ignore unknown open flags fs: add a VALID_OPEN_FLAGS fs: remove _submit_bh() fs: constify tree_descr arrays passed to simple_fill_super() fs: drop duplicate header percpu-rwsem.h fs/affs: bugfix: Write files greater than page size on OFS fs/affs: bugfix: enable writes on OFS disks fs/affs: remove node generation check fs/affs: import amigaffs.h fs/affs: bugfix: make symbolic links work again
2017-04-26fs: constify tree_descr arrays passed to simple_fill_super()Eric Biggers
simple_fill_super() is passed an array of tree_descr structures which describe the files to create in the filesystem's root directory. Since these arrays are never modified intentionally, they should be 'const' so that they are placed in .rodata and benefit from memory protection. This patch updates the function signature and all users, and also constifies tree_descr.name. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-03-29selinuxfs: Use seq_puts() in sel_avc_stats_seq_show()Markus Elfring
A string which did not contain data format specifications should be put into a sequence. Thus use the corresponding function "seq_puts". This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Paul Moore <paul@paul-moore.com>
2017-03-02selinux: wrap cgroup seclabel support with its own policy capabilityStephen Smalley
commit 1ea0ce40690dff38935538e8dab7b12683ded0d3 ("selinux: allow changing labels for cgroupfs") broke the Android init program, which looks up security contexts whenever creating directories and attempts to assign them via setfscreatecon(). When creating subdirectories in cgroup mounts, this would previously be ignored since cgroup did not support userspace setting of security contexts. However, after the commit, SELinux would attempt to honor the requested context on cgroup directories and fail due to permission denial. Avoid breaking existing userspace/policy by wrapping this change with a conditional on a new cgroup_seclabel policy capability. This preserves existing behavior until/unless a new policy explicitly enables this capability. Reported-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2017-02-24mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmfDave Jiang
->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to take a vma and vmf parameter when the vma already resides in vmf. Remove the vma parameter to simplify things. [arnd@arndb.de: fix ARM build] Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@suse.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-01-09selinux: default to security isid in sel_make_bools() if no sid is foundGary Tierney
Use SECINITSID_SECURITY as the default SID for booleans which don't have a matching SID returned from security_genfs_sid(), also update the error message to a warning which matches this. This prevents the policy failing to load (and consequently the system failing to boot) when there is no default genfscon statement matched for the selinuxfs in the new policy. Signed-off-by: Gary Tierney <gary.tierney@gmx.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
2017-01-09selinux: log errors when loading new policyGary Tierney
Adds error logging to the code paths which can fail when loading a new policy in sel_write_load(). If the policy fails to be loaded from userspace then a warning message is printed, whereas if a failure occurs after loading policy from userspace an error message will be printed with details on where policy loading failed (recreating one of /classes/, /policy_capabilities/, /booleans/ in the SELinux fs). Also, if sel_make_bools() fails to obtain an SID for an entry in /booleans/* an error will be printed indicating the path of the boolean. Signed-off-by: Gary Tierney <gary.tierney@gmx.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
2017-01-09selinux: clean up cred usage and simplifyStephen Smalley
SELinux was sometimes using the task "objective" credentials when it could/should use the "subjective" credentials. This was sometimes hidden by the fact that we were unnecessarily passing around pointers to the current task, making it appear as if the task could be something other than current, so eliminate all such passing of current. Inline various permission checking helper functions that can be reduced to a single avc_has_perm() call. Since the credentials infrastructure only allows a task to alter its own credentials, we can always assume that current must be the same as the target task in selinux_setprocattr after the check. We likely should move this check from selinux_setprocattr() to proc_pid_attr_write() and drop the task argument to the security hook altogether; it can only serve to confuse things. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
2017-01-09selinux: support distinctions among all network address familiesStephen Smalley
Extend SELinux to support distinctions among all network address families implemented by the kernel by defining new socket security classes and mapping to them. Otherwise, many sockets are mapped to the generic socket class and are indistinguishable in policy. This has come up previously with regard to selectively allowing access to bluetooth sockets, and more recently with regard to selectively allowing access to AF_ALG sockets. Guido Trentalancia submitted a patch that took a similar approach to add only support for distinguishing AF_ALG sockets, but this generalizes his approach to handle all address families implemented by the kernel. Socket security classes are also added for ICMP and SCTP sockets. Socket security classes were not defined for AF_* values that are reserved but unimplemented in the kernel, e.g. AF_NETBEUI, AF_SECURITY, AF_ASH, AF_ECONET, AF_SNA, AF_WANPIPE. Backward compatibility is provided by only enabling the finer-grained socket classes if a new policy capability is set in the policy; older policies will behave as before. The legacy redhat1 policy capability that was only ever used in testing within Fedora for ptrace_child is reclaimed for this purpose; as far as I can tell, this policy capability is not enabled in any supported distro policy. Add a pair of conditional compilation guards to detect when new AF_* values are added so that we can update SELinux accordingly rather than having to belatedly update it long after new address families are introduced. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-11-20selinux: normalize input to /sys/fs/selinux/enforceStephen Smalley
At present, one can write any signed integer value to /sys/fs/selinux/enforce and it will be stored, e.g. echo -1 > /sys/fs/selinux/enforce or echo 2 > /sys/fs/selinux/enforce. This makes no real difference to the kernel, since it only ever cares if it is zero or non-zero, but some userspace code compares it with 1 to decide if SELinux is enforcing, and this could confuse it. Only a process that is already root and is allowed the setenforce permission in SELinux policy can write to /sys/fs/selinux/enforce, so this is not considered to be a security issue, but it should be fixed. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-11-14selinux: Minor cleanupsAndreas Gruenbacher
Fix the comment for function __inode_security_revalidate, which returns an integer. Use the LABEL_* constants consistently for isec->initialized. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-09-27fs: Replace CURRENT_TIME with current_time() for inode timestampsDeepa Dinamani
CURRENT_TIME macro is not appropriate for filesystems as it doesn't use the right granularity for filesystem timestamps. Use current_time() instead. CURRENT_TIME is also not y2038 safe. This is also in preparation for the patch that transitions vfs timestamps to use 64 bit time and hence make them y2038 safe. As part of the effort current_time() will be extended to do range checks. Hence, it is necessary for all file system timestamps to use current_time(). Also, current_time() will be transitioned along with vfs to be y2038 safe. Note that whenever a single call to current_time() is used to change timestamps in different inodes, it is because they share the same time granularity. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Felipe Balbi <balbi@kernel.org> Acked-by: Steven Whitehouse <swhiteho@redhat.com> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Acked-by: David Sterba <dsterba@suse.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-06-15selinux: fix type mismatchHeinrich Schuchardt
avc_cache_threshold is of type unsigned int. Do not use a signed new_value in sscanf(page, "%u", &new_value). Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> [PM: subject prefix fix, description cleanup] Signed-off-by: Paul Moore <paul@paul-moore.com>
2016-01-22wrappers for ->i_mutex accessAl Viro
parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested}, inode_foo(inode) being mutex_foo(&inode->i_mutex). Please, use those for access to ->i_mutex; over the coming cycle ->i_mutex will become rwsem, with ->lookup() done with it held only shared. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-01-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: - EVM gains support for loading an x509 cert from the kernel (EVM_LOAD_X509), into the EVM trusted kernel keyring. - Smack implements 'file receive' process-based permission checking for sockets, rather than just depending on inode checks. - Misc enhancments for TPM & TPM2. - Cleanups and bugfixes for SELinux, Keys, and IMA. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (41 commits) selinux: Inode label revalidation performance fix KEYS: refcount bug fix ima: ima_write_policy() limit locking IMA: policy can be updated zero times selinux: rate-limit netlink message warnings in selinux_nlmsg_perm() selinux: export validatetrans decisions gfs2: Invalid security labels of inodes when they go invalid selinux: Revalidate invalid inode security labels security: Add hook to invalidate inode security labels selinux: Add accessor functions for inode->i_security security: Make inode argument of inode_getsecid non-const security: Make inode argument of inode_getsecurity non-const selinux: Remove unused variable in selinux_inode_init_security keys, trusted: seal with a TPM2 authorization policy keys, trusted: select hash algorithm for TPM2 chips keys, trusted: fix: *do not* allow duplicate key options tpm_ibmvtpm: properly handle interrupted packet receptions tpm_tis: Tighten IRQ auto-probing tpm_tis: Refactor the interrupt setup tpm_tis: Get rid of the duplicate IRQ probing code ...
2016-01-04selinuxfs: switch to memdup_user_nul()Al Viro
Nothing in there gives a damn about the buffer alignment - it just parses its contents. So the use of get_zeroed_page() doesn't buy us anything - might as well had been kmalloc(), which makes that code equivalent to open-coded memdup_user_nul() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-12-24selinux: export validatetrans decisionsAndrew Perepechko
Make validatetrans decisions available through selinuxfs. "/validatetrans" is added to selinuxfs for this purpose. This functionality is needed by file system servers implemented in userspace or kernelspace without the VFS layer. Writing "$oldcontext $newcontext $tclass $taskcontext" to /validatetrans is expected to return 0 if the transition is allowed and -EPERM otherwise. Signed-off-by: Andrew Perepechko <anserper@ya.ru> CC: andrew.perepechko@seagate.com Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <pmoore@redhat.com>
2015-10-21selinux: introduce security_context_str_to_sidRasmus Villemoes
There seems to be a little confusion as to whether the scontext_len parameter of security_context_to_sid() includes the nul-byte or not. Reading security_context_to_sid_core(), it seems that the expectation is that it does not (both the string copying and the test for scontext_len being zero hint at that). Introduce the helper security_context_str_to_sid() to do the strlen() call and fix all callers. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <pmoore@redhat.com>
2015-09-10mm: mark most vm_operations_struct constKirill A. Shutemov
With two exceptions (drm/qxl and drm/radeon) all vm_operations_struct structs should be constant. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Minchan Kim <minchan@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-07-01sysfs: Create mountpoints with sysfs_create_mount_pointEric W. Biederman
This allows for better documentation in the code and it allows for a simpler and fully correct version of fs_fully_visible to be written. The mount points converted and their filesystems are: /sys/hypervisor/s390/ s390_hypfs /sys/kernel/config/ configfs /sys/kernel/debug/ debugfs /sys/firmware/efi/efivars/ efivarfs /sys/fs/fuse/connections/ fusectl /sys/fs/pstore/ pstore /sys/kernel/tracing/ tracefs /sys/fs/cgroup/ cgroup /sys/kernel/security/ securityfs /sys/fs/selinux/ selinuxfs /sys/fs/smackfs/ smackfs Cc: stable@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2015-04-15VFS: security/: d_inode() annotationsDavid Howells
... 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>
2015-03-27Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/selinux ↵James Morris
into for-linus
2015-03-25selinux: fix sel_write_enforce broken return valueJoe Perches
Return a negative error value like the rest of the entries in this function. Cc: <stable@vger.kernel.org> Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> [PM: tweaked subject line] Signed-off-by: Paul Moore <pmoore@redhat.com>
2015-01-25selinuxfs: don't open-code d_genocide()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-11-03move d_rcu from overlapping d_child to overlapping d_aliasAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-04-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Apart from reordering the SELinux mmap code to ensure DAC is called before MAC, these are minor maintenance updates" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (23 commits) selinux: correctly label /proc inodes in use before the policy is loaded selinux: put the mmap() DAC controls before the MAC controls selinux: fix the output of ./scripts/get_maintainer.pl for SELinux evm: enable key retention service automatically ima: skip memory allocation for empty files evm: EVM does not use MD5 ima: return d_name.name if d_path fails integrity: fix checkpatch errors ima: fix erroneous removal of security.ima xattr security: integrity: Use a more current logging style MAINTAINERS: email updates and other misc. changes ima: reduce memory usage when a template containing the n field is used ima: restore the original behavior for sending data with ima template Integrity: Pass commname via get_task_comm() fs: move i_readcount ima: use static const char array definitions security: have cap_dentry_init_security return error ima: new helper: file_inode(file) kernel: Mark function as static in kernel/seccomp.c capability: Use current logging styles ...
2014-03-10selinux: add gfp argument to security_xfrm_policy_alloc and fix callersNikolay Aleksandrov
security_xfrm_policy_alloc can be called in atomic context so the allocation should be done with GFP_ATOMIC. Add an argument to let the callers choose the appropriate way. In order to do so a gfp argument needs to be added to the method xfrm_policy_alloc_security in struct security_operations and to the internal function selinux_xfrm_alloc_user. After that switch to GFP_ATOMIC in the atomic callers and leave GFP_KERNEL as before for the rest. The path that needed the gfp argument addition is: security_xfrm_policy_alloc -> security_ops.xfrm_policy_alloc_security -> all users of xfrm_policy_alloc_security (e.g. selinux_xfrm_policy_alloc) -> selinux_xfrm_alloc_user (here the allocation used to be GFP_KERNEL only) Now adding a gfp argument to selinux_xfrm_alloc_user requires us to also add it to security_context_to_sid which is used inside and prior to this patch did only GFP_KERNEL allocation. So add gfp argument to security_context_to_sid and adjust all of its callers as well. CC: Paul Moore <paul@paul-moore.com> CC: Dave Jones <davej@redhat.com> CC: Steffen Klassert <steffen.klassert@secunet.com> CC: Fan Du <fan.du@windriver.com> CC: David S. Miller <davem@davemloft.net> CC: LSM list <linux-security-module@vger.kernel.org> CC: SELinux list <selinux@tycho.nsa.gov> Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Acked-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2014-02-06security: replace strict_strto*() with kstrto*()Jingoo Han
The usage of strict_strto*() is not preferred, because strict_strto*() is obsolete. Thus, kstrto*() should be used. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: James Morris <james.l.morris@oracle.com>
2013-07-25Add SELinux policy capability for always checking packet and peer classes.Chris PeBenito
Currently the packet class in SELinux is not checked if there are no SECMARK rules in the security or mangle netfilter tables. Some systems prefer that packets are always checked, for example, to protect the system should the netfilter rules fail to load or if the nefilter rules were maliciously flushed. Add the always_check_network policy capability which, when enabled, treats SECMARK as enabled, even if there are no netfilter SECMARK rules and treats peer labeling as enabled, even if there is no Netlabel or labeled IPSEC configuration. Includes definition of "redhat1" SELinux policy capability, which exists in the SELinux userpace library, to keep ordering correct. The SELinux userpace portion of this was merged last year, but this kernel change fell on the floor. Signed-off-by: Chris PeBenito <cpebenito@tresys.com> Signed-off-by: Eric Paris <eparis@redhat.com>
2013-02-22new helper: file_inode(file)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-09mm: kill vma flag VM_RESERVED and mm->reserved_vm counterKonstantin Khlebnikov
A long time ago, in v2.4, VM_RESERVED kept swapout process off VMA, currently it lost original meaning but still has some effects: | effect | alternative flags -+------------------------+--------------------------------------------- 1| account as reserved_vm | VM_IO 2| skip in core dump | VM_IO, VM_DONTDUMP 3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP 4| do not mlock | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP This patch removes reserved_vm counter from mm_struct. Seems like nobody cares about it, it does not exported into userspace directly, it only reduces total_vm showed in proc. Thus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP. remap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP. remap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP. [akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup] Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Carsten Otte <cotte@de.ibm.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Eric Paris <eparis@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Hugh Dickins <hughd@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Morris <james.l.morris@oracle.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Kentaro Takeda <takedakn@nttdata.co.jp> Cc: Matt Helsley <matthltc@us.ibm.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Venkatesh Pallipadi <venki@google.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-09-21userns: Convert selinux to use kuid and kgid where appropriateEric W. Biederman
Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <james.l.morris@oracle.com> Cc: Eric Paris <eparis@parisplace.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2012-07-23switch dentry_open() to struct path, make it grab references itselfAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-29selinuxfs snprintf() misusesAl Viro
a) %d does _not_ produce a page worth of output b) snprintf() doesn't return negatives - it used to in old glibc, but that's the kernel... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-04-09SELinux: if sel_make_bools errors don't leave inconsistent stateEric Paris
We reset the bool names and values array to NULL, but do not reset the number of entries in these arrays to 0. If we error out and then get back into this function we will walk these NULL pointers based on the belief that they are non-zero length. Signed-off-by: Eric Paris <eparis@redhat.com> cc: stable@kernel.org
2012-04-09SELinux: remove needless sel_div functionEric Paris
I'm not really sure what the idea behind the sel_div function is, but it's useless. Since a and b are both unsigned, it's impossible for a % b < 0. That means that part of the function never does anything. Thus it's just a normal /. Just do that instead. I don't even understand what that operation was supposed to mean in the signed case however.... If it was signed: sel_div(-2, 4) == ((-2 / 4) - ((-2 % 4) < 0)) ((0) - ((-2) < 0)) ((0) - (1)) (-1) What actually happens: sel_div(-2, 4) == ((18446744073709551614 / 4) - ((18446744073709551614 % 4) < 0)) ((4611686018427387903) - ((2 < 0)) (4611686018427387903 - 0) ((unsigned int)4611686018427387903) (4294967295) Neither makes a whole ton of sense to me. So I'm getting rid of the function entirely. Signed-off-by: Eric Paris <eparis@redhat.com>
2012-04-09SELinux: loosen DAC perms on reading policyEric Paris
There is no reason the DAC perms on reading the policy file need to be root only. There are selinux checks which should control this access. Signed-off-by: Eric Paris <eparis@redhat.com>
2012-04-09SELinux: allow seek operations on the file exposing policyEric Paris
sesearch uses: lseek(3, 0, SEEK_SET) = -1 ESPIPE (Illegal seek) Make that work. Signed-off-by: Eric Paris <eparis@redhat.com>
2012-03-31selinuxfs: merge dentry allocation into sel_make_dir()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-11-16selinuxfs: remove custom hex_to_bin()Andy Shevchenko
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Eric Paris <eparis@parisplace.org> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-09selinux: sparse fix: fix warnings in netlink codeJames Morris
Fix sparse warnings in SELinux Netlink code. Signed-off-by: James Morris <jmorris@namei.org>
2011-09-09selinux: sparse fix: eliminate warnings for selinuxfsJames Morris
Fixes several sparse warnings for selinuxfs.c Signed-off-by: James Morris <jmorris@namei.org>
2011-09-09selinux: sparse fix: declare selinux_disable() in security.hJames Morris
Sparse fix: declare selinux_disable() in security.h Signed-off-by: James Morris <jmorris@namei.org>
2011-08-01doc: Update the email address for Paul Moore in various source filesPaul Moore
My @hp.com will no longer be valid starting August 5, 2011 so an update is necessary. My new email address is employer independent so we don't have to worry about doing this again any time soon. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: Paul Moore <paul@paul-moore.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-24VFS : mount lock scalability for internal mountsTim Chen
For a number of file systems that don't have a mount point (e.g. sockfs and pipefs), they are not marked as long term. Therefore in mntput_no_expire, all locks in vfs_mount lock are taken instead of just local cpu's lock to aggregate reference counts when we release reference to file objects. In fact, only local lock need to have been taken to update ref counts as these file systems are in no danger of going away until we are ready to unregister them. The attached patch marks file systems using kern_mount without mount point as long term. The contentions of vfs_mount lock is now eliminated. Before un-registering such file system, kern_unmount should be called to remove the long term flag and make the mount point ready to be freed. Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-06-15Merge branch 'for-linus' of git://git.infradead.org/users/eparis/selinux ↵James Morris
into for-linus