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* security: Fix prompt for LSM_MMAP_MIN_ADDRAndreas Schwab2009-08-191-1/+1
| | | | | | | | | | Fix prompt for LSM_MMAP_MIN_ADDR. (Verbs are cool!) Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* security: Make LSM_MMAP_MIN_ADDR default match its help text.Dave Jones2009-08-191-1/+1
| | | | | | | | | | | Commit 788084aba2ab7348257597496befcbccabdc98a3 added the LSM_MMAP_MIN_ADDR option, whose help text states "For most ia64, ppc64 and x86 users with lots of address space a value of 65536 is reasonable and should cause no problems." Which implies that it's default setting was typoed. Signed-off-by: Dave Jones <davej@redhat.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* Security/SELinux: seperate lsm specific mmap_min_addrEric Paris2009-08-175-3/+68
| | | | | | | | | | | | | | | | | | | Currently SELinux enforcement of controls on the ability to map low memory is determined by the mmap_min_addr tunable. This patch causes SELinux to ignore the tunable and instead use a seperate Kconfig option specific to how much space the LSM should protect. The tunable will now only control the need for CAP_SYS_RAWIO and SELinux permissions will always protect the amount of low memory designated by CONFIG_LSM_MMAP_MIN_ADDR. This allows users who need to disable the mmap_min_addr controls (usual reason being they run WINE as a non-root user) to do so and still have SELinux controls preventing confined domains (like a web server) from being able to map some area of low memory. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: call cap_file_mmap in selinux_file_mmapEric Paris2009-08-171-1/+13
| | | | | | | | | | | | Currently SELinux does not check CAP_SYS_RAWIO in the file_mmap hook. This means there is no DAC check on the ability to mmap low addresses in the memory space. This function adds the DAC check for CAP_SYS_RAWIO while maintaining the selinux check on mmap_zero. This means that processes which need to mmap low memory will need CAP_SYS_RAWIO and mmap_zero but will NOT need the SELinux sys_rawio capability. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
* Capabilities: move cap_file_mmap to commoncap.cEric Paris2009-08-172-9/+30
| | | | | | | | | | | | Currently we duplicate the mmap_min_addr test in cap_file_mmap and in security_file_mmap if !CONFIG_SECURITY. This patch moves cap_file_mmap into commoncap.c and then calls that function directly from security_file_mmap ifndef CONFIG_SECURITY like all of the other capability checks are done. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
* SELinux: fix memory leakage in /security/selinux/hooks.cJames Morris2009-08-111-1/+2
| | | | | | | | | | | Fix memory leakage in /security/selinux/hooks.c The buffer always needs to be freed here; we either error out or allocate more memory. Reported-by: iceberg <strakh@ispras.ru> Signed-off-by: James Morris <jmorris@namei.org> Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
* integrity: add ima_counts_put (updated)Mimi Zohar2009-06-291-1/+28
| | | | | | | | | | | This patch fixes an imbalance message as reported by J.R. Okajima. The IMA file counters are incremented in ima_path_check. If the actual open fails, such as ETXTBSY, decrement the counters to prevent unnecessary imbalance messages. Reported-by: J.R. Okajima <hooanon05@yahoo.co.jp> Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
* integrity: ima audit hash_exists fixMimi Zohar2009-06-291-1/+2
| | | | | | | Audit the file name, not the template name. Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
* devcgroup: skip superfluous checks when found the DEV_ALL elemLi Zefan2009-06-181-4/+6
| | | | | | | | | | While walking through the whitelist, if the DEV_ALL item is found, no more check is needed. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'master' of ↵David S. Miller2009-06-1531-446/+1702
|\ | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/feature-removal-schedule.txt drivers/scsi/fcoe/fcoe.c net/core/drop_monitor.c net/core/net-traces.c
| * Merge branch 'for-linus' of ↵Linus Torvalds2009-06-1131-440/+1690
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (44 commits) nommu: Provide mmap_min_addr definition. TOMOYO: Add description of lists and structures. TOMOYO: Remove unused field. integrity: ima audit dentry_open failure TOMOYO: Remove unused parameter. security: use mmap_min_addr indepedently of security models TOMOYO: Simplify policy reader. TOMOYO: Remove redundant markers. SELinux: define audit permissions for audit tree netlink messages TOMOYO: Remove unused mutex. tomoyo: avoid get+put of task_struct smack: Remove redundant initialization. integrity: nfsd imbalance bug fix rootplug: Remove redundant initialization. smack: do not beyond ARRAY_SIZE of data integrity: move ima_counts_get integrity: path_check update IMA: Add __init notation to ima functions IMA: Minimal IMA policy and boot param for TCB IMA policy selinux: remove obsolete read buffer limit from sel_read_bool ...
| | * TOMOYO: Add description of lists and structures.Tetsuo Handa2009-06-096-34/+504
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds some descriptions of lists and structures. This patch contains no code changes. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * TOMOYO: Remove unused field.Tetsuo Handa2009-06-092-2/+0
| | | | | | | | | | | | | | | | | | | | | TOMOYO 2.2.0 is not using total_len field of "struct tomoyo_path_info". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * Merge branch 'master' into nextJames Morris2009-06-091-0/+6
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| | * | integrity: ima audit dentry_open failureMimi Zohar2009-06-051-4/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Until we start appraising measurements, the ima_path_check() return code should always be 0. - Update the ima_path_check() return code comment - Instead of the pr_info, audit the dentry_open failure Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | TOMOYO: Remove unused parameter.Tetsuo Handa2009-06-043-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TOMOYO 2.2.0 does not check argv[] and envp[] upon execve(). We don't need to pass "struct tomoyo_page_buffer". Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * | security: use mmap_min_addr indepedently of security modelsChristoph Lameter2009-06-042-24/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the dependency of mmap_min_addr on CONFIG_SECURITY. It also sets a default mmap_min_addr of 4096. mmapping of addresses below 4096 will only be possible for processes with CAP_SYS_RAWIO. Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Acked-by: Eric Paris <eparis@redhat.com> Looks-ok-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: James Morris <jmorris@namei.org>
| | * | TOMOYO: Simplify policy reader.Tetsuo Handa2009-06-023-52/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can directly assign the result of tomoyo_io_printf() to done flag. Signed-off-by: Kentaro Takeda <takedakn@nttdata.co.jp> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Toshiharu Harada <haradats@nttdata.co.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * | TOMOYO: Remove redundant markers.Tetsuo Handa2009-06-024-36/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove '/***** START/STOP *****/' markers. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * | SELinux: define audit permissions for audit tree netlink messagesEric Paris2009-06-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Audit trees defined 2 new netlink messages but the netlink mapping tables for selinux permissions were not set up. This patch maps these 2 new operations to AUDIT_WRITE. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | TOMOYO: Remove unused mutex.Tetsuo Handa2009-06-021-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I forgot to remove on TOMOYO's 15th posting. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * | tomoyo: avoid get+put of task_structSerge E. Hallyn2009-06-021-8/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use task_cred_xxx(task, security) in tomoyo_real_domain() to avoid a get+put of the target cred. Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * | smack: Remove redundant initialization.Tetsuo Handa2009-05-281-15/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need to explicitly initialize to cap_* because it will be filled by security_fixup_ops(). Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | rootplug: Remove redundant initialization.Tetsuo Handa2009-05-271-12/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need to explicitly initialize to cap_* because it will be filled by security_fixup_ops(). Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | Merge branch 'master' into nextJames Morris2009-05-222-11/+11
| | |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: fs/exec.c Removed IMA changes (the IMA checks are now performed via may_open()). Signed-off-by: James Morris <jmorris@namei.org>
| | * | | smack: do not beyond ARRAY_SIZE of dataRoel Kluin2009-05-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not go beyond ARRAY_SIZE of data Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | integrity: path_check updateMimi Zohar2009-05-221-19/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add support in ima_path_check() for integrity checking without incrementing the counts. (Required for nfsd.) - rename and export opencount_get to ima_counts_get - replace ima_shm_check calls with ima_counts_get - export ima_path_check Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | IMA: Add __init notation to ima functionsEric Paris2009-05-225-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A number of IMA functions only used during init are not marked with __init. Add those notations so they are freed automatically. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | IMA: Minimal IMA policy and boot param for TCB IMA policyEric Paris2009-05-221-3/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IMA TCB policy is dangerous. A normal use can use all of a system's memory (which cannot be freed) simply by building and running lots of executables. The TCB policy is also nearly useless because logging in as root often causes a policy violation when dealing with utmp, thus rendering the measurements meaningless. There is no good fix for this in the kernel. A full TCB policy would need to be loaded in userspace using LSM rule matching to get both a protected and useful system. But, if too little is measured before userspace can load a real policy one again ends up with a meaningless set of measurements. One option would be to put the policy load inside the initrd in order to get it early enough in the boot sequence to be useful, but this runs into trouble with the LSM. For IMA to measure the LSM policy and the LSM policy loading mechanism it needs rules to do so, but we already talked about problems with defaulting to such broad rules.... IMA also depends on the files being measured to be on an FS which implements and supports i_version. Since the only FS with this support (ext4) doesn't even use it by default it seems silly to have any IMA rules by default. This should reduce the performance overhead of IMA to near 0 while still letting users who choose to configure their machine as such to inclue the ima_tcb kernel paramenter and get measurements during boot before they can load a customized, reasonable policy in userspace. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | selinux: remove obsolete read buffer limit from sel_read_boolStephen Smalley2009-05-191-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Tue, 2009-05-19 at 00:05 -0400, Eamon Walsh wrote: > Recent versions of coreutils have bumped the read buffer size from 4K to > 32K in several of the utilities. > > This means that "cat /selinux/booleans/xserver_object_manager" no longer > works, it returns "Invalid argument" on F11. getsebool works fine. > > sel_read_bool has a check for "count > PAGE_SIZE" that doesn't seem to > be present in the other read functions. Maybe it could be removed? Yes, that check is obsoleted by the conversion of those functions to using simple_read_from_buffer(), which will reduce count if necessary to what is available in the buffer. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | SELinux: move SELINUX_MAGIC into magic.hEric Paris2009-05-192-7/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The selinuxfs superblock magic is used inside the IMA code, but is being defined in two places and could someday get out of sync. This patch moves the declaration into magic.h so it is only done once. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | IMA: do not measure everything opened by root by defaultEric Paris2009-05-151-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IMA default policy measures every single file opened by root. This is terrible for most users. Consider a system (like mine) with virtual machine images. When those images are touched (which happens at boot for me) those images are measured. This is just way too much for the default case. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | IMA: remove read permissions on the ima policy fileEric Paris2009-05-151-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The IMA policy file does not implement read. Trying to just open/read/close the file will load a blank policy and you cannot then change the policy without a reboot. This removes the read permission from the file so one must at least be attempting to write... Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | securityfs: securityfs_remove should handle IS_ERR pointersEric Paris2009-05-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both of the securityfs users (TPM and IMA) can call securityfs_remove and pass an IS_ERR(dentry) in their failure paths. This patch handles those rather than panicing when it tries to start deferencing some negative memory. Signed-off-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | IMA: open all files O_LARGEFILEEric Paris2009-05-121-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If IMA tried to measure a file which was larger than 4G dentry_open would fail with -EOVERFLOW since IMA wasn't passing O_LARGEFILE. This patch passes O_LARGEFILE to all IMA opens to avoid this problem. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | IMA: Handle dentry_open failuresEric Paris2009-05-121-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently IMA does not handle failures from dentry_open(). This means that we leave a pointer set to ERR_PTR(errno) and then try to use it just a few lines later in fput(). Oops. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | IMA: use current_cred() instead of current->credEric Paris2009-05-122-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Proper invocation of the current credentials is to use current_cred() not current->cred. This patches makes IMA use the new method. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | Merge branch 'master' into nextJames Morris2009-05-0814-28/+39
| | |\ \ \
| | * | | | integrity: remove __setup auditing msgsMimi Zohar2009-05-062-25/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove integrity audit messages from __setup() Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | integrity: use audit_log_stringMimi Zohar2009-05-061-13/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on a request from Eric Paris to simplify parsing, replace audit_log_format statements containing "%s" with audit_log_string(). Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | integrity: lsm audit rule matching fixMimi Zohar2009-05-061-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | An audit subsystem change replaced AUDIT_EQUAL with Audit_equal. Update calls to security_filter_rule_init()/match() to reflect the change. Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | selinux: selinux_bprm_committed_creds() should wake up ->real_parent, not ↵Oleg Nesterov2009-04-301-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ->parent. We shouldn't worry about the tracer if current is ptraced, exec() must not succeed if the tracer has no rights to trace this task after cred changing. But we should notify ->real_parent which is, well, real parent. Also, we don't need _irq to take tasklist, and we don't need parent's ->siglock to wake_up_interruptible(real_parent->signal->wait_chldexit). Since we hold tasklist, real_parent->signal must be stable. Otherwise spin_lock(siglock) is not safe too and can't help anyway. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | SELinux: Don't flush inherited SIGKILL during execve()David Howells2009-04-301-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't flush inherited SIGKILL during execve() in SELinux's post cred commit hook. This isn't really a security problem: if the SIGKILL came before the credentials were changed, then we were right to receive it at the time, and should honour it; if it came after the creds were changed, then we definitely should honour it; and in any case, all that will happen is that the process will be scrapped before it ever returns to userspace. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | SELinux: drop secondary_ops->sysctlEric Paris2009-04-301-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We are still calling secondary_ops->sysctl even though the capabilities module does not define a sysctl operation. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | smack: implement logging V3Etienne Basset2009-04-145-110/+600
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the following patch, add logging of Smack security decisions. This is of course very useful to understand what your current smack policy does. As suggested by Casey, it also now forbids labels with ', " or \ It introduces a '/smack/logging' switch : 0: no logging 1: log denied (default) 2: log accepted 3: log denied&accepted Signed-off-by: Etienne Basset <etienne.basset@numericable.fr> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | smack: implement logging V3Etienne Basset2009-04-141-0/+386
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch creates auditing functions usable by LSM to audit security events. It provides standard dumping of FS, NET, task etc ... events (code borrowed from SELinux) and provides 2 callbacks to define LSM specific auditing, which should be flexible enough to convert SELinux too. Signed-off-by: Etienne Basset <etienne.basset@numericable.fr> Acked-by: Casey Schaufler <casey@schaufler-ca.com> cked-by: Eric Paris <eparis@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | tomoyo: remove "undelete domain" command.Tetsuo Handa2009-04-073-100/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since TOMOYO's policy management tools does not use the "undelete domain" command, we decided to remove that command. Signed-off-by: Kentaro Takeda <takedakn@nttdata.co.jp> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Toshiharu Harada <haradats@nttdata.co.jp> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | don't raise all privs on setuid-root file with fE set (v2)Serge E. Hallyn2009-04-031-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Distributions face a backward compatibility problem with starting to use file capabilities. For instance, removing setuid root from ping and doing setcap cap_net_raw=pe means that booting with an older kernel or one compiled without file capabilities means ping won't work for non-root users. In order to replace the setuid root bit on a capability-unaware program, one has to set the effective, or legacy, file capability, which makes the capability effective immediately. This patch uses the legacy bit as a queue to not automatically add full privilege to a setuid-root program. So, with this patch, an ordinary setuid-root program will run with privilege. But if /bin/ping has both setuid-root and cap_net_raw in fP and fE, then ping (when run by non-root user) will not run with only cap_net_raw. Changelog: Apr 2 2009: Print a message once when such a binary is loaded, as per James Morris' suggestion. Apr 2 2009: Fix the condition to only catch uid!=0 && euid==0. Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: James Morris <jmorris@namei.org>
| | * | | | Permissive domain in userspace object managerKaiGai Kohei2009-04-024-29/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables applications to handle permissive domain correctly. Since the v2.6.26 kernel, SELinux has supported an idea of permissive domain which allows certain processes to work as if permissive mode, even if the global setting is enforcing mode. However, we don't have an application program interface to inform what domains are permissive one, and what domains are not. It means applications focuses on SELinux (XACE/SELinux, SE-PostgreSQL and so on) cannot handle permissive domain correctly. This patch add the sixth field (flags) on the reply of the /selinux/access interface which is used to make an access control decision from userspace. If the first bit of the flags field is positive, it means the required access control decision is on permissive domain, so application should allow any required actions, as the kernel doing. This patch also has a side benefit. The av_decision.flags is set at context_struct_compute_av(). It enables to check required permissions without read_lock(&policy_rwlock). Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Eric Paris <eparis@redhat.com> -- security/selinux/avc.c | 2 +- security/selinux/include/security.h | 4 +++- security/selinux/selinuxfs.c | 4 ++-- security/selinux/ss/services.c | 30 +++++------------------------- 4 files changed, 11 insertions(+), 29 deletions(-) Signed-off-by: James Morris <jmorris@namei.org>
| * | | | | Merge branch 'rcu-for-linus' of ↵Linus Torvalds2009-06-112-6/+6
| |\ \ \ \ \ | | |_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: rcu_sched_grace_period(): kill the bogus flush_signals() rculist: use list_entry_rcu in places where it's appropriate rculist.h: introduce list_entry_rcu() and list_first_entry_rcu() rcu: Update RCU tracing documentation for __rcu_pending rcu: Add __rcu_pending tracing to hierarchical RCU RCU: make treercu be default
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 08:13:47 +0100