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ima: Reflect correct permissions for policy

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Kernel configured as CONFIG_IMA_READ_POLICY=y && CONFIG_IMA_WRITE_POLICY=n
keeps 0600 mode after loading policy. Remove write permission to state
that policy file no longer be written.

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
This commit is contained in:
Petr Vorel 2018-04-20 15:28:57 +02:00 committed by Mimi Zohar
parent 890e2abe10
commit ffb122de9a
1 changed files with 2 additions and 0 deletions
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2
security/integrity/ima/ima_fs.c
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@ -434,6 +434,8 @@ static int ima_release_policy(struct inode *inode, struct file *file)
ima_policy = NULL;
#elif defined(CONFIG_IMA_WRITE_POLICY)
clear_bit(IMA_FS_BUSY, &ima_fs_flags);
#elif defined(CONFIG_IMA_READ_POLICY)
inode->i_mode &= ~S_IWUSR;
#endif
return 0;
}