user/sven/linux.git/include/linux/ima.h, branch v3.9

ima: support new kernel module syscall

2012-12-14T02:35:26Z

With the addition of the new kernel module syscall, which defines two arguments - a file descriptor to the kernel module and a pointer to a NULL terminated string of module arguments - it is now possible to measure and appraise kernel modules like any other file on the file system. This patch adds support to measure and appraise kernel modules in an extensible and consistent manner. To support filesystems without extended attribute support, additional patches could pass the signature as the first parameter. Signed-off-by: Mimi Zohar Signed-off-by: Rusty Russell

ima: add ima_inode_setxattr/removexattr function and calls

2012-09-07T18:57:47Z

Based on xattr_permission comments, the restriction to modify 'security' xattr is left up to the underlying fs or lsm. Ensure that not just anyone can modify or remove 'security.ima'. Changelog v1: - Unless IMA-APPRAISE is configured, use stub ima_inode_removexattr()/setxattr() functions. (Moved ima_inode_removexattr()/setxattr() to ima_appraise.c) Changelog: - take i_mutex to fix locking (Dmitry Kasatkin) - ima_reset_appraise_flags should only be called when modifying or removing the 'security.ima' xattr. Requires CAP_SYS_ADMIN privilege. (Incorporated fix from Roberto Sassu) - Even if allowed to update security.ima, reset the appraisal flags, forcing re-appraisal. - Replace CAP_MAC_ADMIN with CAP_SYS_ADMIN - static inline ima_inode_setxattr()/ima_inode_removexattr() stubs - ima_protect_xattr should be static Signed-off-by: Mimi Zohar Signed-off-by: Dmitry Kasatkin

ima: add inode_post_setattr call

2012-09-07T18:57:46Z

Changing an inode's metadata may result in our not needing to appraise the file. In such cases, we must remove 'security.ima'. Changelog v1: - use ima_inode_post_setattr() stub function, if IMA_APPRAISE not configured Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn Acked-by: Dmitry Kasatkin

integrity: move ima inode integrity data management

2011-07-18T16:29:38Z

Move the inode integrity data(iint) management up to the integrity directory in order to share the iint among the different integrity models. Changelog: - don't define MAX_DIGEST_SIZE - rename several globally visible 'ima_' prefixed functions, structs, locks, etc to 'integrity_' - replace '20' with SHA1_DIGEST_SIZE - reflect location change in appropriate Kconfig and Makefiles - remove unnecessary initialization of iint_initialized to 0 - rebased on current ima_iint.c - define integrity_iint_store/lock as static There should be no other functional changes. Signed-off-by: Mimi Zohar Acked-by: Serge Hallyn

IMA: maintain i_readcount in the VFS layer

2011-02-10T12:51:44Z

ima_counts_get() updated the readcount and invalidated the PCR, as necessary. Only update the i_readcount in the VFS layer. Move the PCR invalidation checks to ima_file_check(), where it belongs. Maintaining the i_readcount in the VFS layer, will allow other subsystems to use i_readcount. Signed-off-by: Mimi Zohar Acked-by: Eric Paris

ima: rename ima_path_check to ima_file_check

2010-02-07T08:06:22Z

ima_path_check actually deals with files! call it ima_file_check instead. Signed-off-by: Eric Paris Acked-by: Mimi Zohar Signed-off-by: Al Viro

fix ima breakage

2010-02-07T08:06:22Z

The "Untangling ima mess, part 2 with counters" patch messed up the counters. Based on conversations with Al Viro, this patch streamlines ima_path_check() by removing the counter maintaince. The counters are now updated independently, from measuring the file, in __dentry_open() and alloc_file() by calling ima_counts_get(). ima_path_check() is called from nfsd and do_filp_open(). It also did not measure all files that should have been measured. Reason: ima_path_check() got bogus value passed as mask. [AV: mea culpa] [AV: add missing nfsd bits] Signed-off-by: Mimi Zohar Signed-off-by: Al Viro

Untangling ima mess, part 3: kill dead code in ima

2009-12-16T17:16:47Z

Kill the 'update' argument of ima_path_check(), kill dead code in ima. Current rules: ima counters are bumped at the same time when the file switches from put_filp() fodder to fput() one. Which happens exactly in two places - alloc_file() and __dentry_open(). Nothing else needs to do that at all. Signed-off-by: Al Viro

integrity: add ima_counts_put (updated)

2009-06-28T22:59:10Z

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 Signed-off-by: Mimi Zohar Signed-off-by: James Morris

integrity: path_check update

2009-05-21T23:43:41Z

- 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 Signed-off-by: James Morris