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2009-02-23integrity: ima iint radix_tree_lookup locking fixMimi Zohar1-0/+2
Based on Andrew Morton's comments: - add missing locks around radix_tree_lookup in ima_iint_insert() Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-20integrity: ima scatterlist bug fixMimi Zohar1-2/+2
Based on Alexander Beregalov's post http://lkml.org/lkml/2009/2/19/198 - replaced sg_set_buf() with sg_init_one() kernel BUG at include/linux/scatterlist.h:65! invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC last sysfs file: CPU 2 Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.29-rc5-next-20090219 #5 PowerEdge 1950 RIP: 0010:[<ffffffff8045ec70>] [<ffffffff8045ec70>] ima_calc_hash+0xc0/0x160 RSP: 0018:ffff88007f46bc40 EFLAGS: 00010286 RAX: ffffe200032c45e8 RBX: 00000000fffffff4 RCX: 0000000087654321 RDX: 0000000000000002 RSI: 0000000000000001 RDI: ffff88007cf71048 RBP: ffff88007f46bcd0 R08: 0000000000000000 R09: 0000000000000163 R10: ffff88007f4707a8 R11: 0000000000000000 R12: ffff88007cf71048 R13: 0000000000001000 R14: 0000000000000000 R15: 0000000000009d98 FS: 0000000000000000(0000) GS:ffff8800051ac000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 0000000000000000 CR3: 0000000000201000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Tested-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-13ima: fix build errorRandy Dunlap1-2/+2
IMA_LSM_RULES requires AUDIT. This is automatic if SECURITY_SELINUX=y but not when SECURITY_SMACK=y (and SECURITY_SELINUX=n), so make the dependency explicit. This fixes the following build error: security/integrity/ima/ima_policy.c:111:error: implicit declaration of function 'security_audit_rule_match' security/integrity/ima/ima_policy.c:230:error: implicit declaration of function 'security_audit_rule_init' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-12integrity: audit updateMimi Zohar6-21/+25
Based on discussions on linux-audit, as per Steve Grubb's request http://lkml.org/lkml/2009/2/6/269, the following changes were made: - forced audit result to be either 0 or 1. - made template names const - Added new stand-alone message type: AUDIT_INTEGRITY_RULE Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-06IMA: fix ima_delete_rules() definitionJames Morris1-1/+1
Fix ima_delete_rules() definition so sparse doesn't complain. Signed-off-by: James Morris <jmorris@namei.org>
2009-02-06Integrity: IMA file free imbalanceMimi Zohar3-0/+61
The number of calls to ima_path_check()/ima_file_free() should be balanced. An extra call to fput(), indicates the file could have been accessed without first being measured. Although f_count is incremented/decremented in places other than fget/fput, like fget_light/fput_light and get_file, the current task must already hold a file refcnt. The call to __fput() is delayed until the refcnt becomes 0, resulting in ima_file_free() flagging any changes. - add hook to increment opencount for IPC shared memory(SYSV), shmat files, and /dev/zero - moved NULL iint test in opencount_get() Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-06integrity: IMA policy openMimi Zohar1-1/+16
Sequentialize access to the policy file - permit multiple attempts to replace default policy with a valid policy Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-06integrity: IMA policyMimi Zohar4-4/+386
Support for a user loadable policy through securityfs with support for LSM specific policy data. - free invalid rule in ima_parse_add_rule() Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-06integrity: IMA displayMimi Zohar5-2/+314
Make the measurement lists available through securityfs. - removed test for NULL return code from securityfs_create_file/dir Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
2009-02-06integrity: IMA as an integrity service providerMimi Zohar11-0/+1422
IMA provides hardware (TPM) based measurement and attestation for file measurements. As the Trusted Computing (TPM) model requires, IMA measures all files before they are accessed in any way (on the integrity_bprm_check, integrity_path_check and integrity_file_mmap hooks), and commits the measurements to the TPM. Once added to the TPM, measurements can not be removed. In addition, IMA maintains a list of these file measurements, which can be used to validate the aggregate value stored in the TPM. The TPM can sign these measurements, and thus the system can prove, to itself and to a third party, the system's integrity in a way that cannot be circumvented by malicious or compromised software. - alloc ima_template_entry before calling ima_store_template() - log ima_add_boot_aggregate() failure - removed unused IMA_TEMPLATE_NAME_LEN - replaced hard coded string length with #define name Signed-off-by: Mimi Zohar <zohar@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
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