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authorMimi Zohar <zohar@linux.vnet.ibm.com>2018-07-13 21:06:02 +0300
committerJames Morris <james.morris@microsoft.com>2018-07-16 22:31:57 +0300
commitc77b8cdf745d91eca138e7bfa430dc6640b604a0 (patch)
treef1cc1edc3cecbff32a4450d252b551f5260ee9e1 /security/loadpin
parentef96837b0de4af47732e2a8ebf5c18e8a885ded6 (diff)
downloadlinux-c77b8cdf745d91eca138e7bfa430dc6640b604a0.tar.xz
module: replace the existing LSM hook in init_module
Both the init_module and finit_module syscalls call either directly or indirectly the security_kernel_read_file LSM hook. This patch replaces the direct call in init_module with a call to the new security_kernel_load_data hook and makes the corresponding changes in SELinux, LoadPin, and IMA. Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com> Cc: Jeff Vander Stoep <jeffv@google.com> Cc: Casey Schaufler <casey@schaufler-ca.com> Cc: Kees Cook <keescook@chromium.org> Acked-by: Jessica Yu <jeyu@kernel.org> Acked-by: Paul Moore <paul@paul-moore.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: James Morris <james.morris@microsoft.com>
Diffstat (limited to 'security/loadpin')
-rw-r--r--security/loadpin/loadpin.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/security/loadpin/loadpin.c b/security/loadpin/loadpin.c
index 5fa191252c8f..0716af28808a 100644
--- a/security/loadpin/loadpin.c
+++ b/security/loadpin/loadpin.c
@@ -173,9 +173,15 @@ static int loadpin_read_file(struct file *file, enum kernel_read_file_id id)
return 0;
}
+static int loadpin_load_data(enum kernel_load_data_id id)
+{
+ return loadpin_read_file(NULL, (enum kernel_read_file_id) id);
+}
+
static struct security_hook_list loadpin_hooks[] __lsm_ro_after_init = {
LSM_HOOK_INIT(sb_free_security, loadpin_sb_free_security),
LSM_HOOK_INIT(kernel_read_file, loadpin_read_file),
+ LSM_HOOK_INIT(kernel_load_data, loadpin_load_data),
};
void __init loadpin_add_hooks(void)