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ima: check ima_policy_flag in the ima_file_free() hook

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This patch completes the switching to the 'ima_policy_flag' variable
in the checks at the beginning of IMA functions, starting with the
commit a756024e.

Checking 'iint_initialized' is completely unnecessary, because
S_IMA flag is unset if iint was not allocated. At the same time
the integrity cache is allocated with SLAB_PANIC and the kernel will
panic if the allocation fails during kernel initialization. So on
a running system iint_initialized is always true and can be removed.

Changes in v3:
* not limiting test to IMA_APPRAISE (spotted by Roberto Sassu)

Changes in v2:
* 'iint_initialized' removal patch merged to this patch (requested
   by Mimi)

Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Acked-by: Roberto Sassu <roberto.sassu@polito.it>
This commit is contained in:
Dmitry Kasatkin
2014-09-24 11:05:10 +03:00
committed by Mimi Zohar
parent 594081ee71
commit 0f34a0060a
3 changed files with 1 additions and 7 deletions
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2
security/integrity/ima/ima_main.c
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@@ -143,7 +143,7 @@ void ima_file_free(struct file *file)
struct inode *inode = file_inode(file);
struct integrity_iint_cache *iint;
if (!iint_initialized || !S_ISREG(inode->i_mode))
if (!ima_policy_flag || !S_ISREG(inode->i_mode))
return;
iint = integrity_iint_find(inode);