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2014-08-26tomoyo: Fix pathname calculation breakage.Tetsuo Handa
Commit 7177a9c4b509 ("fs: call rename2 if exists") changed "struct inode_operations"->rename == NULL if "struct inode_operations"->rename2 != NULL . TOMOYO needs to check for both ->rename and ->rename2 , or a system on (e.g.) ext4 filesystem won't boot. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
2014-06-12tomoyo: Use sensible time interfaceThomas Gleixner
There is no point in calling gettimeofday if only the seconds part of the timespec is used. Use get_seconds() instead. It's not only the proper interface it's also faster. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: John Stultz <john.stultz@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Kentaro Takeda <takedakn@nttdata.co.jp> Cc: linux-security-module@vger.kernel.org Link: http://lkml.kernel.org/r/20140611234607.775273584@linutronix.de
2014-04-01get rid of pointless checks for NULL ->i_opAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-05-01Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 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 ...
2013-04-29tomoyo_close_control: don't bother with return valueAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-03-18tomoyo: use DEFINE_SRCU() to define tomoyo_ssLai Jiangshan
DEFINE_STATIC_SRCU() defines srcu struct and do init at build time. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
2013-02-22new helper: file_inode(file)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-11consitify do_mount() argumentsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-09mm: use mm->exe_file instead of first VM_EXECUTABLE vma->vm_fileKonstantin Khlebnikov
Some security modules and oprofile still uses VM_EXECUTABLE for retrieving a task's executable file. After this patch they will use mm->exe_file directly. mm->exe_file is protected with mm->mmap_sem, so locking stays the same. Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> [arch/tile] Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> [tomoyo] Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Carsten Otte <cotte@de.ibm.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> Acked-by: 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: 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: Teach security_path_chown to take kuids and kgidsEric W. Biederman
Don't make the security modules deal with raw user space uid and gids instead pass in a kuid_t and a kgid_t so that security modules only have to deal with internal kernel uids and gids. Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: James Morris <james.l.morris@oracle.com> Cc: John Johansen <john.johansen@canonical.com> Cc: Kentaro Takeda <takedakn@nttdata.co.jp> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2012-09-21userns: Convert tomoyo to use kuid and kgid where appropriateEric W. Biederman
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
2012-05-22Merge branch 'master' of git://git.infradead.org/users/eparis/selinux into nextJames Morris
Per pull request, for 3.5.
2012-05-15TOMOYO: Accept manager programs which do not start with / .Tetsuo Handa
The pathname of /usr/sbin/tomoyo-editpolicy seen from Ubuntu 12.04 Live CD is squashfs:/usr/sbin/tomoyo-editpolicy rather than /usr/sbin/tomoyo-editpolicy . Therefore, we need to accept manager programs which do not start with / . Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-04-09SELinux: rename dentry_open to file_openEric Paris
dentry_open takes a file, rename it to file_open Signed-off-by: Eric Paris <eparis@redhat.com>
2012-03-23usermodehelper: use UMH_WAIT_PROC consistentlyOleg Nesterov
A few call_usermodehelper() callers use the hardcoded constant instead of the proper UMH_WAIT_PROC, fix them. Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Michal Januszewski <spock@gentoo.org> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Kentaro Takeda <takedakn@nttdata.co.jp> Cc: 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>
2012-03-21Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates for 3.4 from James Morris: "The main addition here is the new Yama security module from Kees Cook, which was discussed at the Linux Security Summit last year. Its purpose is to collect miscellaneous DAC security enhancements in one place. This also marks a departure in policy for LSM modules, which were previously limited to being standalone access control systems. Chromium OS is using Yama, and I believe there are plans for Ubuntu, at least. This patchset also includes maintenance updates for AppArmor, TOMOYO and others." Fix trivial conflict in <net/sock.h> due to the jumo_label->static_key rename. * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (38 commits) AppArmor: Fix location of const qualifier on generated string tables TOMOYO: Return error if fails to delete a domain AppArmor: add const qualifiers to string arrays AppArmor: Add ability to load extended policy TOMOYO: Return appropriate value to poll(). AppArmor: Move path failure information into aa_get_name and rename AppArmor: Update dfa matching routines. AppArmor: Minor cleanup of d_namespace_path to consolidate error handling AppArmor: Retrieve the dentry_path for error reporting when path lookup fails AppArmor: Add const qualifiers to generated string tables AppArmor: Fix oops in policy unpack auditing AppArmor: Fix error returned when a path lookup is disconnected KEYS: testing wrong bit for KEY_FLAG_REVOKED TOMOYO: Fix mount flags checking order. security: fix ima kconfig warning AppArmor: Fix the error case for chroot relative path name lookup AppArmor: fix mapping of META_READ to audit and quiet flags AppArmor: Fix underflow in xindex calculation AppArmor: Fix dropping of allowed operations that are force audited AppArmor: Add mising end of structure test to caps unpacking ...
2012-03-20tomoyo: remove the second argument of k[un]map_atomic()Cong Wang
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Cong Wang <amwang@redhat.com>
2012-03-20TOMOYO: Return error if fails to delete a domainTetsuo Handa
Call sequence: tomoyo_write_domain() --> tomoyo_delete_domain() In 'tomoyo_delete_domain', return -EINTR if locking attempt is interrupted by signal. At present it returns success to its caller 'tomoyo_write_domain()' even though domain is not deleted. 'tomoyo_write_domain()' assumes domain is deleted and returns success to its caller. This is wrong behaviour. 'tomoyo_write_domain' should return error from tomoyo_delete_domain() to its caller. Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-03-15TOMOYO: Return appropriate value to poll().Tetsuo Handa
"struct file_operations"->poll() expects "unsigned int" return value. All files in /sys/kernel/security/tomoyo/ directory other than /sys/kernel/security/tomoyo/query and /sys/kernel/security/tomoyo/audit should return POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM rather than -ENOSYS. Also, /sys/kernel/security/tomoyo/query and /sys/kernel/security/tomoyo/audit should return POLLOUT | POLLWRNORM rather than 0 when there is no data to read. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-03-01TOMOYO: Fix mount flags checking order.Tetsuo Handa
Userspace can pass in arbitrary combinations of MS_* flags to mount(). If both MS_BIND and one of MS_SHARED/MS_PRIVATE/MS_SLAVE/MS_UNBINDABLE are passed, device name which should be checked for MS_BIND was not checked because MS_SHARED/MS_PRIVATE/MS_SLAVE/MS_UNBINDABLE had higher priority than MS_BIND. If both one of MS_BIND/MS_MOVE and MS_REMOUNT are passed, device name which should not be checked for MS_REMOUNT was checked because MS_BIND/MS_MOVE had higher priority than MS_REMOUNT. Fix these bugs by changing priority to MS_REMOUNT -> MS_BIND -> MS_SHARED/MS_PRIVATE/MS_SLAVE/MS_UNBINDABLE -> MS_MOVE as with do_mount() does. Also, unconditionally return -EINVAL if more than one of MS_SHARED/MS_PRIVATE/MS_SLAVE/MS_UNBINDABLE is passed so that TOMOYO will not generate inaccurate audit logs, for commit 7a2e8a8f "VFS: Sanity check mount flags passed to change_mnt_propagation()" clarified that these flags must be exclusively passed. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <james.l.morris@oracle.com>
2012-01-18TOMOYO: Accept \000 as a valid character.Tetsuo Handa
TOMOYO 2.5 in Linux 3.2 and later handles Unix domain socket's address. Thus, tomoyo_correct_word2() needs to accept \000 as a valid character, or TOMOYO 2.5 cannot handle Unix domain's abstract socket address. Reported-by: Steven Allen <steven@stebalien.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> CC: stable@vger.kernel.org [3.2+] Signed-off-by: James Morris <jmorris@namei.org>
2012-01-10Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-securityLinus Torvalds
* 'for-linus' of git://selinuxproject.org/~jmorris/linux-security: (32 commits) ima: fix invalid memory reference ima: free duplicate measurement memory security: update security_file_mmap() docs selinux: Casting (void *) value returned by kmalloc is useless apparmor: fix module parameter handling Security: tomoyo: add .gitignore file tomoyo: add missing rcu_dereference() apparmor: add missing rcu_dereference() evm: prevent racing during tfm allocation evm: key must be set once during initialization mpi/mpi-mpow: NULL dereference on allocation failure digsig: build dependency fix KEYS: Give key types their own lockdep class for key->sem TPM: fix transmit_cmd error logic TPM: NSC and TIS drivers X86 dependency fix TPM: Export wait_for_stat for other vendor specific drivers TPM: Use vendor specific function for status probe tpm_tis: add delay after aborting command tpm_tis: Check return code from getting timeouts/durations tpm: Introduce function to poll for result of self test ... Fix up trivial conflict in lib/Makefile due to addition of CONFIG_MPI and SIGSIG next to CONFIG_DQL addition.
2012-01-09Merge branch 'next' into for-linusJames Morris
Conflicts: security/integrity/evm/evm_crypto.c Resolved upstream fix vs. next conflict manually. Signed-off-by: James Morris <jmorris@namei.org>
2012-01-06switch security_path_chmod() to struct path *Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-06Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into ZAl Viro
2012-01-03vfs: trim includes a bitAl Viro
[folded fix for missing magic.h from Tetsuo Handa] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->path_mknod() to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->path_mkdir() to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03tomoyo_mini_stat: switch to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch securityfs_create_file() to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch security_path_chmod() to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03tomoyo: stop including hell knows whatAl Viro
tomoyo/realpath.c needs exactly one include - that of common.h. It pulls everything the thing needs, without doing ridiculous garbage such as trying to include ../../fs/internal.h. If that alone doesn't scream "layering violation", I don't know what does; and these days it's all for nothing, since it fortunately does not use any symbols defined in there... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-12-12Security: tomoyo: add .gitignore fileGreg Kroah-Hartman
This adds the .gitignore file for the autogenerated TOMOYO files to keep git from complaining after building things. Cc: Kentaro Takeda <takedakn@nttdata.co.jp> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: James Morris <jmorris@namei.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-12-12tomoyo: add missing rcu_dereference()Kees Cook
Adds a missed rcu_dereference() around real_parent. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-12-08TOMOYO: Fix pathname handling of disconnected paths.Tetsuo Handa
Current tomoyo_realpath_from_path() implementation returns strange pathname when calculating pathname of a file which belongs to lazy unmounted tree. Use local pathname rather than strange absolute pathname in that case. Also, this patch fixes a regression by commit 02125a82 "fix apparmor dereferencing potentially freed dentry, sanitize __d_path() API". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-12-06fix apparmor dereferencing potentially freed dentry, sanitize __d_path() APIAl Viro
__d_path() API is asking for trouble and in case of apparmor d_namespace_path() getting just that. The root cause is that when __d_path() misses the root it had been told to look for, it stores the location of the most remote ancestor in *root. Without grabbing references. Sure, at the moment of call it had been pinned down by what we have in *path. And if we raced with umount -l, we could have very well stopped at vfsmount/dentry that got freed as soon as prepend_path() dropped vfsmount_lock. It is safe to compare these pointers with pre-existing (and known to be still alive) vfsmount and dentry, as long as all we are asking is "is it the same address?". Dereferencing is not safe and apparmor ended up stepping into that. d_namespace_path() really wants to examine the place where we stopped, even if it's not connected to our namespace. As the result, it looked at ->d_sb->s_magic of a dentry that might've been already freed by that point. All other callers had been careful enough to avoid that, but it's really a bad interface - it invites that kind of trouble. The fix is fairly straightforward, even though it's bigger than I'd like: * prepend_path() root argument becomes const. * __d_path() is never called with NULL/NULL root. It was a kludge to start with. Instead, we have an explicit function - d_absolute_root(). Same as __d_path(), except that it doesn't get root passed and stops where it stops. apparmor and tomoyo are using it. * __d_path() returns NULL on path outside of root. The main caller is show_mountinfo() and that's precisely what we pass root for - to skip those outside chroot jail. Those who don't want that can (and do) use d_path(). * __d_path() root argument becomes const. Everyone agrees, I hope. * apparmor does *NOT* try to use __d_path() or any of its variants when it sees that path->mnt is an internal vfsmount. In that case it's definitely not mounted anywhere and dentry_path() is exactly what we want there. Handling of sysctl()-triggered weirdness is moved to that place. * if apparmor is asked to do pathname relative to chroot jail and __d_path() tells it we it's not in that jail, the sucker just calls d_absolute_path() instead. That's the other remaining caller of __d_path(), BTW. * seq_path_root() does _NOT_ return -ENAMETOOLONG (it's stupid anyway - the normal seq_file logics will take care of growing the buffer and redoing the call of ->show() just fine). However, if it gets path not reachable from root, it returns SEQ_SKIP. The only caller adjusted (i.e. stopped ignoring the return value as it used to do). Reviewed-by: John Johansen <john.johansen@canonical.com> ACKed-by: John Johansen <john.johansen@canonical.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@vger.kernel.org
2011-11-02Merge branch 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-securityLinus Torvalds
* 'for-linus' of git://git.selinuxproject.org/~jmorris/linux-security: TOMOYO: Fix interactive judgment functionality.
2011-10-29TOMOYO: Fix interactive judgment functionality.Tetsuo Handa
Commit 17fcfbd9 "TOMOYO: Add interactive enforcing mode." introduced ability to query access decision using userspace programs. It was using global PID for reaching policy configuration of the process. However, use of PID returns stale policy configuration when the process's subjective credentials and objective credentials differ. Fix this problem by allowing reaching policy configuration via query id. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-10-25Merge branch 'next' of git://selinuxproject.org/~jmorris/linux-securityLinus Torvalds
* 'next' of git://selinuxproject.org/~jmorris/linux-security: (95 commits) TOMOYO: Fix incomplete read after seek. Smack: allow to access /smack/access as normal user TOMOYO: Fix unused kernel config option. Smack: fix: invalid length set for the result of /smack/access Smack: compilation fix Smack: fix for /smack/access output, use string instead of byte Smack: domain transition protections (v3) Smack: Provide information for UDS getsockopt(SO_PEERCRED) Smack: Clean up comments Smack: Repair processing of fcntl Smack: Rule list lookup performance Smack: check permissions from user space (v2) TOMOYO: Fix quota and garbage collector. TOMOYO: Remove redundant tasklist_lock. TOMOYO: Fix domain transition failure warning. TOMOYO: Remove tomoyo_policy_memory_lock spinlock. TOMOYO: Simplify garbage collector. TOMOYO: Fix make namespacecheck warnings. target: check hex2bin result encrypted-keys: check hex2bin result ...
2011-10-22TOMOYO: Fix incomplete read after seek.Tetsuo Handa
Commit f23571e8 "TOMOYO: Copy directly to userspace buffer." introduced tomoyo_flush() that flushes data to be read as soon as possible. tomoyo_select_domain() (which is called by write()) enqueues data which meant to be read by next read(), but previous read()'s read buffer's size was not cleared. As a result, since 2.6.36, sequence like char *cp = "select global-pid=1\n"; read(fd, buf1, sizeof(buf1)); write(fd, cp, strlen(cp)); read(fd, buf2, sizeof(buf2)); causes enqueued data to be flushed to buf1 rather than buf2. Fix this bug by clearing read buffer's size upon write() request. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-10-19TOMOYO: Fix unused kernel config option.Tetsuo Handa
CONFIG_SECURITY_TOMOYO_MAX_{ACCEPT_ENTRY,AUDIT_LOG} introduced by commit 0e4ae0e0 "TOMOYO: Make several options configurable." were by error not used. Reported-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-10-12TOMOYO: Fix quota and garbage collector.Tetsuo Handa
Commit 059d84db "TOMOYO: Add socket operation restriction support" and commit 731d37aa "TOMOYO: Allow domain transition without execve()." forgot to update tomoyo_domain_quota_is_ok() and tomoyo_del_acl() which results in incorrect quota counting and memory leak. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-10-12TOMOYO: Remove redundant tasklist_lock.Tetsuo Handa
rcu_read_lock() is sufficient for calling find_task_by_pid_ns()/find_task_by_vpid(). Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-28TOMOYO: Fix domain transition failure warning.Tetsuo Handa
Commit bd03a3e4 "TOMOYO: Add policy namespace support." introduced policy namespace. But as of /sbin/modprobe is executed from initramfs/initrd, profiles for target domain's namespace is not defined because /sbin/tomoyo-init is not yet called. Reported-by: Jamie Nguyen <jamie@tomoyolinux.co.uk> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-26TOMOYO: Remove tomoyo_policy_memory_lock spinlock.Tetsuo Handa
tomoyo_policy_lock mutex already protects it. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-26TOMOYO: Simplify garbage collector.Tetsuo Handa
When TOMOYO started using garbage collector at commit 847b173e "TOMOYO: Add garbage collector.", we waited for close() before kfree(). Thus, elements to be kfree()d were queued up using tomoyo_gc_list list. But it turned out that tomoyo_element_linked_by_gc() tends to choke garbage collector when certain pattern of entries are queued. Since garbage collector is no longer waiting for close() since commit 2e503bbb "TOMOYO: Fix lockdep warning.", we can remove tomoyo_gc_list list and tomoyo_element_linked_by_gc() by doing sequential processing. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-26TOMOYO: Fix make namespacecheck warnings.Tetsuo Handa
Commit efe836ab "TOMOYO: Add built-in policy support." introduced tomoyo_load_builtin_policy() but was by error called from nowhere. Commit b22b8b9f "TOMOYO: Rename meminfo to stat and show more statistics." introduced tomoyo_update_stat() but was by error not called from tomoyo_assign_domain(). Also, mark tomoyo_io_printf() and tomoyo_path_permission() static functions, as reported by "make namespacecheck". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-19TOMOYO: Allow specifying domain transition preference.Tetsuo Handa
I got an opinion that it is difficult to use exception policy's domain transition control directives because they need to match the pathname specified to "file execute" directives. For example, if "file execute /bin/\*\-ls\-cat" is given, corresponding domain transition control directive needs to be like "no_keep_domain /bin/\*\-ls\-cat from any". If we can specify like below, it will become more convenient. file execute /bin/ls keep exec.realpath="/bin/ls" exec.argv[0]="ls" file execute /bin/cat keep exec.realpath="/bin/cat" exec.argv[0]="cat" file execute /bin/\*\-ls\-cat child file execute /usr/sbin/httpd <apache> exec.realpath="/usr/sbin/httpd" exec.argv[0]="/usr/sbin/httpd" In above examples, "keep" works as if keep_domain is specified, "child" works as if "no_reset_domain" and "no_initialize_domain" and "no_keep_domain" are specified, "<apache>" causes domain transition to <apache> domain upon successful execve() operation. Moreover, we can also allow transition to different domains based on conditions like below example. <kernel> /usr/sbin/sshd file execute /bin/bash <kernel> /usr/sbin/sshd //batch-session exec.argc=2 exec.argv[1]="-c" file execute /bin/bash <kernel> /usr/sbin/sshd //root-session task.uid=0 file execute /bin/bash <kernel> /usr/sbin/sshd //nonroot-session task.uid!=0 Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-15TOMOYO: Bump version.Tetsuo Handa
Tell userland tools that this is TOMOYO 2.5. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
2011-09-14TOMOYO: Avoid race when retrying "file execute" permission check.Tetsuo Handa
There was a race window that the pathname which is subjected to "file execute" permission check when retrying via supervisor's decision because the pathname was recalculated upon retry. Though, there is an inevitable race window even without supervisor, for we have to calculate the symbolic link's pathname from "struct linux_binprm"->filename rather than from "struct linux_binprm"->file because we cannot back calculate the symbolic link's pathname from the dereferenced pathname. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
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