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| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2016-01-30 22:23:26 -0500 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2016-02-21 09:06:09 -0500 |
| commit | 39eeb4fb97f60dbdfc823c1a673a8844b9226b60 (patch) | |
| tree | 46e37e2211017237abd363a0dd1b3737da741ed0 /security/security.c | |
| parent | e40ba6d56b41754b37b995dbc8035b2b3a6afd8a (diff) | |
| download | lwn-39eeb4fb97f60dbdfc823c1a673a8844b9226b60.tar.gz lwn-39eeb4fb97f60dbdfc823c1a673a8844b9226b60.zip | |
security: define kernel_read_file hook
The kernel_read_file security hook is called prior to reading the file
into memory.
Changelog v4+:
- export security_kernel_read_file()
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Luis R. Rodriguez <mcgrof@kernel.org>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security/security.c')
| -rw-r--r-- | security/security.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/security/security.c b/security/security.c index cd85be61c416..8e699f98a600 100644 --- a/security/security.c +++ b/security/security.c @@ -899,6 +899,17 @@ int security_kernel_module_from_file(struct file *file) return ima_module_check(file); } +int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) +{ + int ret; + + ret = call_int_hook(kernel_read_file, 0, file, id); + if (ret) + return ret; + return ima_read_file(file, id); +} +EXPORT_SYMBOL_GPL(security_kernel_read_file); + int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, enum kernel_read_file_id id) { @@ -1696,6 +1707,8 @@ struct security_hook_heads security_hook_heads = { LIST_HEAD_INIT(security_hook_heads.kernel_module_request), .kernel_module_from_file = LIST_HEAD_INIT(security_hook_heads.kernel_module_from_file), + .kernel_read_file = + LIST_HEAD_INIT(security_hook_heads.kernel_read_file), .kernel_post_read_file = LIST_HEAD_INIT(security_hook_heads.kernel_post_read_file), .task_fix_setuid = |